Rust switch
This commit is contained in:
Matteo Paonessa
parent
2c1256ebbf
commit
0277984dfa
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name: Rust
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on:
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push:
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branches: [ master ]
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pull_request:
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branches: [ master ]
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env:
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CARGO_TERM_COLOR: always
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jobs:
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build:
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runs-on: ${{ matrix.os }}
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strategy:
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matrix:
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os: [macos-latest, ubuntu-latest, windows-latest]
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steps:
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- uses: actions/checkout@v2
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- name: Build
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run: cargo build --verbose --release
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- name: Run tests
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run: cargo test --verbose --release
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@ -1,115 +1,14 @@
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# Object files
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# Generated by Cargo
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*.o
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# will have compiled files and executables
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*.ko
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debug/
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*.obj
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target/
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*.elf
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# Precompiled Headers
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# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
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*.gch
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# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
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*.pch
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Cargo.lock
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# Libraries
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# These are backup files generated by rustfmt
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*.lib
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**/*.rs.bk
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*.a
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*.la
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*.lo
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# Shared objects (inc. Windows DLLs)
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# MSVC Windows builds of rustc generate these, which store debugging information
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*.dll
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*.pdb
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*.so
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*.so.*
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*.dylib
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# Executables
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*.exe
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*.out
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*.app
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*.i*86
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*.x86_64
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*.hex
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# Debug files
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*.dSYM/
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*.su
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# CLion
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.idea/*
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# Build
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cmake-build-*
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build
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### JetBrains template
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# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
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# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
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# User-specific stuff:
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.idea/workspace.xml
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.idea/tasks.xml
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# Sensitive or high-churn files:
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.idea/dataSources/
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.idea/dataSources.ids
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.idea/dataSources.xml
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.idea/dataSources.local.xml
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.idea/sqlDataSources.xml
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.idea/dynamic.xml
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.idea/uiDesigner.xml
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# Gradle:
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.idea/gradle.xml
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.idea/libraries
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# Mongo Explorer plugin:
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.idea/mongoSettings.xml
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## File-based project format:
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*.iws
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## Plugin-specific files:
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# IntelliJ
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/out/
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# mpeltonen/sbt-idea plugin
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.idea_modules/
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# JIRA plugin
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atlassian-ide-plugin.xml
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# Crashlytics plugin (for Android Studio and IntelliJ)
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com_crashlytics_export_strings.xml
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crashlytics.properties
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crashlytics-build.properties
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fabric.properties
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# General
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.DS_Store
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.AppleDouble
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.LSOverride
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# Icon must end with two \r
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Icon
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# Thumbnails
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._*
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# Files that might appear in the root of a volume
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.DocumentRevisions-V100
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.fseventsd
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.Spotlight-V100
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.TemporaryItems
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.Trashes
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.VolumeIcon.icns
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.com.apple.timemachine.donotpresent
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# Directories potentially created on remote AFP share
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.AppleDB
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.AppleDesktop
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Network Trash Folder
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Temporary Items
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.apdisk
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mozjpeg
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zopfli
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@ -0,0 +1,6 @@
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# Default ignored files
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/shelf/
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/workspace.xml
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# Datasource local storage ignored files
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/dataSources/
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/dataSources.local.xml
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@ -0,0 +1,13 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<module type="CPP_MODULE" version="4">
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<component name="NewModuleRootManager">
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
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<excludeFolder url="file://$MODULE_DIR$/target" />
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<excludeFolder url="file://$MODULE_DIR$/dssim/target" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>
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@ -0,0 +1,8 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="ProjectModuleManager">
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<modules>
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<module fileurl="file://$PROJECT_DIR$/.idea/caesium.iml" filepath="$PROJECT_DIR$/.idea/caesium.iml" />
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</modules>
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</component>
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</project>
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@ -0,0 +1,6 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<project version="4">
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<component name="VcsDirectoryMappings">
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<mapping directory="$PROJECT_DIR$" vcs="Git" />
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</component>
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</project>
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30
.travis.yml
30
.travis.yml
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@ -1,30 +0,0 @@
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language: c
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os:
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- linux
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- osx
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dist: bionic
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osx_image: xcode11.2
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compiler:
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- gcc
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- clang
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before_install:
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- if [ "$TRAVIS_OS_NAME" = "osx" ]; then brew update; fi
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- if [ "$TRAVIS_OS_NAME" = "osx" ]; then brew install nasm; fi
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- if [ "$TRAVIS_OS_NAME" = "osx" ]; then alias nasm=/usr/local/bin/nasm; fi
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- if [ "$TRAVIS_OS_NAME" = "linux" ]; then sudo apt-get install libtool autoconf git nasm pkg-config cmake; fi
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- chmod +x install.sh
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- ./install.sh
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before_script:
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- mkdir build
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- cd build
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- cmake ..
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script: make
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after_success:
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- demo/caesiumd -v
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@ -1,59 +0,0 @@
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cmake_minimum_required(VERSION 2.8.12)
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project(libcaesium)
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set(CMAKE_MACOSX_RPATH 1)
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set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
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# The version number.
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set(VERSION_MAJOR 0)
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set(VERSION_MINOR 5)
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set(VERSION_PATCH 2)
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if (DEFINED VERBOSE)
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set(VERBOSE ${VERBOSE})
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else ()
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set(VERBOSE 0)
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endif ()
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configure_file(
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"caesium/config.h.in"
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"${PROJECT_BINARY_DIR}/config.h"
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)
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include_directories("${PROJECT_BINARY_DIR}")
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if (APPLE)
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set(MOZJPEG_DEFAULT_PATH /opt/mozjpeg)
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set(ZOPFLI_DEFAULT_PATH /usr/local)
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elseif (WIN32)
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set(MOZJPEG_DEFAULT_PATH C:\\mozjpeg)
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set(ZOPFLI_DEFAULT_PATH C:\\zopfli)
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else ()
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set(MOZJPEG_DEFAULT_PATH /opt/mozjpeg)
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set(ZOPFLI_DEFAULT_PATH /usr)
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endif ()
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if (NOT DEFINED MOZJPEG_PATH)
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set(MOZJPEG_PATH ${MOZJPEG_DEFAULT_PATH})
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endif()
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if (NOT DEFINED ZOPFLI_PATH)
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set(ZOPFLI_PATH ${ZOPFLI_DEFAULT_PATH})
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endif()
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include_directories(${MOZJPEG_PATH}/include)
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include_directories(${ZOPFLI_PATH}/include)
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if (EXISTS ${MOZJPEG_PATH}/lib64)
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link_directories(${MOZJPEG_PATH}/lib64)
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else ()
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link_directories(${MOZJPEG_PATH}/lib)
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endif ()
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link_directories(${ZOPFLI_PATH}/lib)
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add_subdirectory(caesium)
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add_subdirectory(demo)
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[package]
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name = "libcaesium"
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version = "0.6.0"
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authors = ["Matteo Paonessa <matteo.paonessa@gmail.com>"]
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edition = "2018"
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categories = ["multimedia::images"]
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keywords = [
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"compression",
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"library",
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"jpeg",
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"png",
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"gif",
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"webp"
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]
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description = "A lossy/lossless image compression library."
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readme = "README.md"
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exclude = [
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"tests/*",
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]
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homepage = "https://github.com/Lymphatus/libcaesium"
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repository = "https://github.com/Lymphatus/libcaesium"
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license = "Apache-2.0"
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[dependencies]
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mozjpeg = "0.9.1"
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mozjpeg-sys = "1.0.0"
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oxipng = "5.0"
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libc = "0.2.76"
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wasm-bindgen = "0.2"
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gifsicle = "1.92.5"
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webp = "0.2.0"
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infer = "0.5.0"
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[dev-dependencies]
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dssim = "2.11.2"
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load_image = { version = "2.12.1", features = ["static"] }
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imgref = "1.7.0"
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lodepng = "3.0.0"
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kamadak-exif = "0.5.0"
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[lib]
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name = "caesium"
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path = "src/lib.rs"
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crate-type = ["lib", "dylib"]
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test = true
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doctest = false
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bench = false
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doc = false
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211
README.md
211
README.md
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# libcaesium
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# libcaesium
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[](https://travis-ci.org/Lymphatus/libcaesium)
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Libcaesium is a simple library performing JPEG and PNG compression/optimization using [mozjpeg](https://github.com/mozilla/mozjpeg) and [zopfli](https://github.com/google/zopfli).
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Libcaesium is a simple library performing JPEG, PNG, WebP and GIF (experimental) compression/optimization written in Rust, with a C interface.\
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**IMPORTANT**: starting from v0.6.0 the library is written in Rust and no longer in C. There's a C interface, but it's not backward compatible with the <0.6.0.
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## Download
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## Usage in Rust
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Binaries not available yet. Please refer to the compilation section below.
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Libcaesium exposes one single function, auto-detecting the input file type:
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```Rust
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## Basic usage
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pub fn compress(
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input_path: String,
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Libcaesium exposes one single function to compress, auto-detecting the input file type:
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output_path: String,
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```C
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parameters: CSParameters
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bool cs_compress(const char *input,
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) -> Result<(), Box<dyn Error>>
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const char *output,
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cs_image_pars *options,
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int* err_n);
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```
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```
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#### Parameters
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#### Parameters
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**input** - input file path
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- `input_path` - input file path (full filename)
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**output** - output file path
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- `output_path` - output file path (full filename)
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**options** - pointer to the options struct, containing compression parameters (see below)
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- `parameters` - options struct, containing compression parameters (see below)
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**err_n** - pointer to an integer that will contain the error code if something went wrong during compression
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#### Return value
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**true** if the compression has successfully ended, or **false** if any error occurs. If any error occurred, the **err_n**
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variable will contain the error code. See `error.h` for further info.
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## Compression options
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Libcaesium supports a few compression parameters for each JPEG and PNG.
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You need to initialize the default values before compressing by calling `initialize_parameters()`.
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### Compression options
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||||||
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Libcaesium supports a few compression parameters for each file it supports.
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They are defined into a top level struct containing each supported file parameters, as follows:
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They are defined into a top level struct containing each supported file parameters, as follows:
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```C
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```Rust
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typedef struct cs_image_pars
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pub struct CSParameters {
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{
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pub jpeg: jpeg::Parameters,
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cs_jpeg_pars jpeg;
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pub png: png::Parameters,
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cs_png_pars png;
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pub gif: gif::Parameters,
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} cs_image_pars;
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pub webp: webp::Parameters,
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pub keep_metadata: bool,
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pub optimize: bool,
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}
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```
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```
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### JPEG
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Each file type has its own options, but the last two are generic:
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```C
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- `keep_metadata`: will keep metadata information for any supported type. JPEG and PNG supported. Default `false`.
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typedef struct cs_jpeg_pars
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- `optimize`: forces optimization, when available. With this option enabled the compression will be lossless. JPEG, PNG and WebP supported. Default `false`.
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{
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int quality;
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bool exif_copy;
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int dct_method;
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||||||
double scale_factor;
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} cs_jpeg_pars;
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```
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The first 4 parameters matters, in term of compression, while the others will be set by the compressor/decompressor
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||||||
during the compression progress and thus they will be overwritten.
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||||||
- **quality**: in a range from 0 to 100, the quality of the resulting image. **Note** that 0 means _optimization_ (see below). Default: 0.
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||||||
- **exif_copy**: set it to _true_ to copy EXIF tag info after compression. Default: false.
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||||||
- **dct_method**: one of the turbojpeg DCT flags. Default: TJFLAG_FASTDCT.
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||||||
- **scale_factor**: the image scaling factor, expressed as double precision number. Default: 1.0.
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|
||||||
|
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||||||
### PNG
|
#### jpeg
|
||||||
```C
|
```Rust
|
||||||
typedef struct cs_png_pars
|
pub struct Parameters {
|
||||||
{
|
pub quality: u32,
|
||||||
int iterations;
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}
|
||||||
int iterations_large;
|
|
||||||
int block_split_strategy;
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|
||||||
bool lossy_8;
|
|
||||||
bool transparent;
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|
||||||
int auto_filter_strategy;
|
|
||||||
double scale_factor;
|
|
||||||
} cs_png_pars;
|
|
||||||
```
|
```
|
||||||
Those are the zopflipng compression parameters, except for the last one.
|
- `quality`: in a range from 1 to 100, the quality of the resulting image. Default `80`.
|
||||||
- **iterations**: number of iterations (more means more compression). Default: 10.
|
|
||||||
- **iteration_large**: number of iterations for large files. Default: 5.
|
|
||||||
- **block_split_strategy**: filter strategy. Default: 4;
|
|
||||||
- **lossy_8**: convert 16-bit per channel image to 8-bit per channel. Default: true.
|
|
||||||
- **transparent**: remove colors behind alpha channel 0. Default: true.
|
|
||||||
- **auto_filter_strategy**: legacy.
|
|
||||||
- **scale_factor**: the image scaling factor, expressed as double precision number. Note that PNG cannot be upscaled. Default: 1.0.
|
|
||||||
|
|
||||||
|
#### png
|
||||||
|
```Rust
|
||||||
|
pub struct Parameters {
|
||||||
|
pub oxipng: oxipng::Options,
|
||||||
|
pub level: u32,
|
||||||
|
pub force_zopfli: bool
|
||||||
|
}
|
||||||
|
```
|
||||||
|
- `oxipng`: oxipng options. Should be left as default unless you want to do something advanced. Refer to [oxipng](https://github.com/shssoichiro/oxipng) for documentation.
|
||||||
|
- `level`: level of optimization, from 0 to 6. Increasing the level will result in a smaller file, at the cost of computation time. If the optimization flag is `true`, the level is set to `6`. Default: `3`.
|
||||||
|
- `force_zopfli`: if `optimization` is `true` and this option is also `true`, will use zopfli algorithm for compression, resulting in a smaller image but it may take minutes to finish the process. Default `false`.
|
||||||
|
|
||||||
|
#### gif
|
||||||
|
GIF support is experimental, has many know issues and does not support optimization. Expect bugs (especially on Windows).
|
||||||
|
```Rust
|
||||||
|
pub struct Parameters {
|
||||||
|
pub quality: u32,
|
||||||
|
}
|
||||||
|
```
|
||||||
|
- `quality`: in a range from 0 to 100, the quality of the resulting image. If the optimization flag is `true`, the level is set to `100`. Default: `80`.
|
||||||
|
|
||||||
|
#### webp
|
||||||
|
WebP compression is tricky. The format is already well optimized and using the `optimize` flag will probably result in a bigger image.
|
||||||
|
```Rust
|
||||||
|
pub struct Parameters {
|
||||||
|
pub quality: u32,
|
||||||
|
}
|
||||||
|
```
|
||||||
|
- `quality`: in a range from 0 to 100, the quality of the resulting image. If the optimization flag is `true`, this option will be ignored. Default: `60`.
|
||||||
|
|
||||||
|
## Usage in C
|
||||||
|
Libcaesium exposes one single C function, auto-detecting the input file type:
|
||||||
|
```Rust
|
||||||
|
pub extern fn c_compress(
|
||||||
|
input_path: *const c_char,
|
||||||
|
output_path: *const c_char,
|
||||||
|
params: C_CSParameters
|
||||||
|
) -> bool
|
||||||
|
```
|
||||||
|
#### Parameters
|
||||||
|
- `input_path` - input file path (full filename)
|
||||||
|
- `output_path` - output file path (full filename)
|
||||||
|
- `parameters` - options struct, containing compression parameters (see below)
|
||||||
|
-
|
||||||
|
#### Return
|
||||||
|
`true` if all goes well, `false` otherwise.
|
||||||
|
|
||||||
|
### Compression options
|
||||||
|
The C options struct is slightly different from the Rust one:
|
||||||
|
```Rust
|
||||||
|
#[repr(C)]
|
||||||
|
pub struct C_CSParameters {
|
||||||
|
pub keep_metadata: bool,
|
||||||
|
pub jpeg_quality: u32,
|
||||||
|
pub png_level: u32,
|
||||||
|
pub png_force_zopfli: bool,
|
||||||
|
pub gif_quality: u32,
|
||||||
|
pub webp_quality: u32,
|
||||||
|
pub optimize: bool,
|
||||||
|
}
|
||||||
|
```
|
||||||
|
The option description is the same as the Rust counterpart.
|
||||||
|
|
||||||
|
## Download
|
||||||
|
Binaries not available. Please refer to the compilation section below.
|
||||||
|
|
||||||
## Compilation and Installation
|
## Compilation and Installation
|
||||||
Libcaesium uses cmake to build and install the library. Before compiling, be sure to have all the requisites.
|
Compilation is available for all supported platforms: Windows, MacOS and Linux.
|
||||||
Libcaesium requires [mozjpeg](https://github.com/mozilla/mozjpeg) and [zopfli](https://github.com/google/zopfli) installed as shared/static libraries.
|
|
||||||
Please refer to their own documentation for detailed instructions.
|
|
||||||
You can also enable the verbose output, which will print on stderr if anything goes wrong, by using the `-DVERBOSE=1` flag during compilation.
|
|
||||||
|
|
||||||
### OS X/Linux
|
|
||||||
##### Requirements
|
|
||||||
Be sure you have the build tools
|
|
||||||
###### Linux
|
|
||||||
`$ sudo apt-get install libtool autoconf git nasm pkg-config cmake libpng-dev`
|
|
||||||
|
|
||||||
###### OSX
|
|
||||||
`$ brew install nasm cmake`
|
|
||||||
|
|
||||||
Get the code with
|
|
||||||
`$ git clone https://github.com/Lymphatus/libcaesium.git`
|
|
||||||
|
|
||||||
If you don't have `mozjpeg` and `zopfli` you should run
|
|
||||||
```bash
|
|
||||||
$ cd libcaesium
|
|
||||||
$ ./install.sh
|
|
||||||
```
|
```
|
||||||
which will install the requirements.
|
cargo build --release
|
||||||
|
|
||||||
##### Compile
|
|
||||||
Provided you have all the requirements, building and installing from git is as simple as typing
|
|
||||||
```bash
|
|
||||||
$ mkdir build
|
|
||||||
$ cd build
|
|
||||||
$ cmake ..
|
|
||||||
$ make
|
|
||||||
$ sudo make install
|
|
||||||
```
|
```
|
||||||
This will compile the Caesium library, the required header and a small demo application named _caesiumd_.
|
Note: if you don't use the `--release` flag, the PNG optimizations can take a very long time to complete, especially using the zopfli algorithm.
|
||||||
|
|
||||||
### Windows
|
The result will be a dynamic library usable by external applications through its C interface.
|
||||||
Compiling on Windows is somehow tricky. You can achieve it with MinGW (tested) or Cygwin (not tested), but it's better to stick with the binaries provided.
|
|
||||||
|
|
||||||
## Compression vs Optimization
|
## Compression vs Optimization
|
||||||
JPEG is a lossy format: that means you will always lose some information after each compression. So, compressing a file with
|
JPEG is a lossy format: that means you will always lose some information after each compression. So, compressing a file with
|
||||||
100 quality for 10 times will result in a always different image, even though you can't really see the difference.
|
100 quality for 10 times will result in an always different image, even though you can't really see the difference.
|
||||||
Libcaesium also supports optimization, by setting the _quality_ to 0. This performs a lossless process, resulting in the same image,
|
Libcaesium also supports optimization, by setting the _quality_ to 0. This performs a lossless process, resulting in the same image,
|
||||||
but with a smaller size (10-15% usually).
|
but with a smaller size (10-12% usually).
|
||||||
PNG is lossless, so libcaesium will always perform optimization rather than compression.
|
PNG is lossless, so libcaesium will always perform optimization rather than compression.
|
||||||
|
GIF optimization is possible, but currently not supported.
|
||||||
|
WebP optimization is also possible, but it will probably result in a bigger output file as it's well suited to losslessly convert from PNG or JPEG.
|
||||||
|
|
||||||
## Resizing
|
## Resizing
|
||||||
Resizing is partially supported. It is handy but it's almost completely out of the scope of this library.
|
Resizing is no longer supported since 0.6.0.
|
||||||
If you really feel the need to do it within libcaesium you can do so, but I advise you should opt for a different toolset for the best results.
|
|
||||||
|
|
@ -1,21 +0,0 @@
|
||||||
if (NOT WIN32)
|
|
||||||
set(CMAKE_C_FLAGS "--std=gnu99 -fPIC -Wno-nullability-completeness ${CMAKE_C_FLAGS}")
|
|
||||||
else ()
|
|
||||||
set(CMAKE_C_FLAGS "--std=gnu99 ${CMAKE_C_FLAGS}")
|
|
||||||
endif ()
|
|
||||||
|
|
||||||
find_library(jpeg jpeg ${MOZJPEG_PATH}/lib)
|
|
||||||
find_library(turbojpeg turbojpeg ${MOZJPEG_PATH}/lib)
|
|
||||||
find_library(zopflipng zopflipng ${ZOPFLI_PATH}/lib)
|
|
||||||
|
|
||||||
add_library(caesium SHARED caesium.c error.c utils.c png.c vendor/lodepng.c jpeg.c)
|
|
||||||
|
|
||||||
target_link_libraries(caesium jpeg turbojpeg zopfli zopflipng)
|
|
||||||
|
|
||||||
# Make sure the compiler can find include files for our Caesium library
|
|
||||||
# when other libraries or executables link to Caesium
|
|
||||||
target_include_directories(caesium PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
|
|
||||||
|
|
||||||
install(FILES caesium.h DESTINATION ${CMAKE_INSTALL_PREFIX}/include)
|
|
||||||
install(TARGETS caesium
|
|
||||||
LIBRARY DESTINATION ${CMAKE_INSTALL_PREFIX}/lib)
|
|
||||||
|
|
@ -1,74 +0,0 @@
|
||||||
#include <stdio.h>
|
|
||||||
|
|
||||||
#include "error.h"
|
|
||||||
#include "utils.h"
|
|
||||||
#include "png.h"
|
|
||||||
#include "jpeg.h"
|
|
||||||
|
|
||||||
bool cs_compress(const char *input_path, const char *output_path, cs_image_pars *options, int* err_n)
|
|
||||||
{
|
|
||||||
FILE *pInputFile;
|
|
||||||
image_type type;
|
|
||||||
bool result = false;
|
|
||||||
int compression_step_result;
|
|
||||||
|
|
||||||
if ((pInputFile = fopen(input_path, "rb")) == NULL) {
|
|
||||||
libcaesium_display_error(ERROR, 104);
|
|
||||||
*err_n = error_code;
|
|
||||||
return result;
|
|
||||||
}
|
|
||||||
|
|
||||||
type = detect_image_type(pInputFile);
|
|
||||||
|
|
||||||
fclose(pInputFile);
|
|
||||||
|
|
||||||
if (type == UNKN) {
|
|
||||||
libcaesium_display_error(WARNING, 103);
|
|
||||||
} else if (type == CS_JPEG) {
|
|
||||||
if (options->jpeg.quality != 0) {
|
|
||||||
compression_step_result = cs_jpeg_compress(output_path, cs_jpeg_decompress(input_path, &options->jpeg), &options->jpeg);
|
|
||||||
result = (bool) compression_step_result;
|
|
||||||
//The output is now the new input for optimization
|
|
||||||
if (result) {
|
|
||||||
result = cs_jpeg_optimize(compression_step_result == 1 ? output_path : input_path, output_path, &options->jpeg, input_path);
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
result = cs_jpeg_optimize(input_path, output_path, &options->jpeg, input_path);
|
|
||||||
}
|
|
||||||
} else if (type == CS_PNG) {
|
|
||||||
result = cs_png_optimize(input_path, output_path, &options->png);
|
|
||||||
}
|
|
||||||
|
|
||||||
*err_n = error_code;
|
|
||||||
|
|
||||||
return result;
|
|
||||||
}
|
|
||||||
|
|
||||||
void initialize_jpeg_parameters(cs_image_pars *options)
|
|
||||||
{
|
|
||||||
options->jpeg.quality = 0;
|
|
||||||
options->jpeg.exif_copy = false;
|
|
||||||
options->jpeg.dct_method = 2048;
|
|
||||||
options->jpeg.scale_factor = 1.0;
|
|
||||||
}
|
|
||||||
|
|
||||||
void initialize_png_parameters(cs_image_pars *options)
|
|
||||||
{
|
|
||||||
options->png.iterations = 2;
|
|
||||||
options->png.iterations_large = 1;
|
|
||||||
options->png.block_split_strategy = 0;
|
|
||||||
options->png.lossy_8 = true;
|
|
||||||
options->png.transparent = true;
|
|
||||||
options->png.auto_filter_strategy = true;
|
|
||||||
options->png.scale_factor = 1.0;
|
|
||||||
}
|
|
||||||
|
|
||||||
cs_image_pars initialize_parameters()
|
|
||||||
{
|
|
||||||
cs_image_pars options;
|
|
||||||
|
|
||||||
initialize_jpeg_parameters(&options);
|
|
||||||
initialize_png_parameters(&options);
|
|
||||||
|
|
||||||
return options;
|
|
||||||
}
|
|
||||||
|
|
@ -1,64 +0,0 @@
|
||||||
#ifndef LIBCAESIUM_CAESIUM_H
|
|
||||||
#define LIBCAESIUM_CAESIUM_H
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
extern "C" {
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#include <stdbool.h>
|
|
||||||
#include <string.h>
|
|
||||||
|
|
||||||
typedef struct cs_jpeg_pars
|
|
||||||
{
|
|
||||||
int quality;
|
|
||||||
bool exif_copy;
|
|
||||||
int dct_method;
|
|
||||||
double scale_factor;
|
|
||||||
/*
|
|
||||||
* Parameters you have no reason to set as they will be
|
|
||||||
* overwritten during the process
|
|
||||||
*/
|
|
||||||
int color_space;
|
|
||||||
int subsample;
|
|
||||||
int width;
|
|
||||||
int height;
|
|
||||||
} cs_jpeg_pars;
|
|
||||||
|
|
||||||
typedef struct cs_png_pars
|
|
||||||
{
|
|
||||||
int iterations;
|
|
||||||
int iterations_large;
|
|
||||||
int block_split_strategy;
|
|
||||||
bool lossy_8;
|
|
||||||
bool transparent;
|
|
||||||
int auto_filter_strategy;
|
|
||||||
double scale_factor;
|
|
||||||
} cs_png_pars;
|
|
||||||
|
|
||||||
typedef struct cs_image_pars
|
|
||||||
{
|
|
||||||
cs_jpeg_pars jpeg;
|
|
||||||
cs_png_pars png;
|
|
||||||
} cs_image_pars;
|
|
||||||
|
|
||||||
typedef enum image_type
|
|
||||||
{
|
|
||||||
CS_JPEG,
|
|
||||||
CS_PNG,
|
|
||||||
UNKN,
|
|
||||||
} image_type;
|
|
||||||
|
|
||||||
typedef enum error_level
|
|
||||||
{
|
|
||||||
ERROR = 0,
|
|
||||||
WARNING = 1
|
|
||||||
} error_level;
|
|
||||||
|
|
||||||
bool cs_compress(const char *input_path, const char *output_path, cs_image_pars *options, int* err_n);
|
|
||||||
cs_image_pars initialize_parameters();
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#endif
|
|
||||||
|
|
@ -1,5 +0,0 @@
|
||||||
#define VERSION_MAJOR @VERSION_MAJOR@
|
|
||||||
#define VERSION_MINOR @VERSION_MINOR@
|
|
||||||
#define VERSION_PATCH @VERSION_PATCH@
|
|
||||||
|
|
||||||
#define VERBOSE @VERBOSE@
|
|
||||||
|
|
@ -1,67 +0,0 @@
|
||||||
#include <stdio.h>
|
|
||||||
|
|
||||||
#include "error.h"
|
|
||||||
#include "config.h"
|
|
||||||
|
|
||||||
int error_code = 0;
|
|
||||||
|
|
||||||
void libcaesium_display_error(error_level level, int code) {
|
|
||||||
error_code = code;
|
|
||||||
if (VERBOSE) {
|
|
||||||
char *error_level = ((level) ? "[WARNING]" : "[ERROR]");
|
|
||||||
|
|
||||||
fprintf(stderr, "%s %d: %s\n",
|
|
||||||
error_level,
|
|
||||||
code,
|
|
||||||
get_error_message(code));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
const char *get_error_message(int code) {
|
|
||||||
switch (code) {
|
|
||||||
//Generic errors
|
|
||||||
case 101:
|
|
||||||
return "NULL file pointer while checking type.";
|
|
||||||
case 103:
|
|
||||||
return "File type not supported.";
|
|
||||||
case 104:
|
|
||||||
return "Could not open input file.";
|
|
||||||
|
|
||||||
//JPEG related errors
|
|
||||||
case 200:
|
|
||||||
return "Failed to open JPEG file while trying to get markers";
|
|
||||||
case 201:
|
|
||||||
return "Failed to open input JPEG file while optimizing";
|
|
||||||
case 202:
|
|
||||||
return "Failed to open output JPEG file while optimizing";
|
|
||||||
case 203:
|
|
||||||
return "Failed to open JPEG file while compressing";
|
|
||||||
case 204:
|
|
||||||
return "Failed to open JPEG file while decompressing";
|
|
||||||
case 205:
|
|
||||||
return "Failed to retrieve input JPEG file size";
|
|
||||||
case 206:
|
|
||||||
return "Input JPEG file is too big";
|
|
||||||
case 207:
|
|
||||||
return "Compressor failed";
|
|
||||||
case 208:
|
|
||||||
return "Decompressor failed";
|
|
||||||
case 209:
|
|
||||||
return "CMYK images are not fully supported and can only be optimized.";
|
|
||||||
|
|
||||||
//PNG related errors
|
|
||||||
case 300:
|
|
||||||
return "Failed to load PNG file.";
|
|
||||||
case 301:
|
|
||||||
return "Error while optimizing PNG.";
|
|
||||||
case 303:
|
|
||||||
return "Error while writing output PNG file.";
|
|
||||||
case 304:
|
|
||||||
return "Error while resizing PNG file.";
|
|
||||||
case 305:
|
|
||||||
return "PNG scaling factor must be a number greater than 0 and equal or minor to 1.";
|
|
||||||
|
|
||||||
default:
|
|
||||||
return "Unrecognized error.";
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
@ -1,12 +0,0 @@
|
||||||
#ifndef LIBCAESIUM_ERROR_H
|
|
||||||
#define LIBCAESIUM_ERROR_H
|
|
||||||
|
|
||||||
#include "caesium.h"
|
|
||||||
|
|
||||||
extern int error_code;
|
|
||||||
|
|
||||||
void libcaesium_display_error(error_level level, int code);
|
|
||||||
|
|
||||||
const char *get_error_message(int code);
|
|
||||||
|
|
||||||
#endif
|
|
||||||
272
caesium/jpeg.c
272
caesium/jpeg.c
|
|
@ -1,272 +0,0 @@
|
||||||
#include <stdio.h>
|
|
||||||
#include <jpeglib.h>
|
|
||||||
#include <string.h>
|
|
||||||
#include <turbojpeg.h>
|
|
||||||
#include <limits.h>
|
|
||||||
#include <math.h>
|
|
||||||
|
|
||||||
#include "jpeg.h"
|
|
||||||
#include "error.h"
|
|
||||||
#include "config.h"
|
|
||||||
|
|
||||||
METHODDEF(void)
|
|
||||||
do_not_emit_message () {}
|
|
||||||
|
|
||||||
struct jpeg_decompress_struct cs_get_markers(const char *input)
|
|
||||||
{
|
|
||||||
FILE *fp;
|
|
||||||
struct jpeg_decompress_struct einfo;
|
|
||||||
struct jpeg_error_mgr eerr;
|
|
||||||
einfo.err = jpeg_std_error(&eerr);
|
|
||||||
|
|
||||||
jpeg_create_decompress(&einfo);
|
|
||||||
|
|
||||||
//Check for errors
|
|
||||||
if ((fp = fopen(input, "rb")) == NULL) {
|
|
||||||
libcaesium_display_error(ERROR, 200);
|
|
||||||
}
|
|
||||||
|
|
||||||
//Create the IO instance for the input file
|
|
||||||
jpeg_stdio_src(&einfo, fp);
|
|
||||||
|
|
||||||
//Save EXIF info
|
|
||||||
jpeg_save_markers(&einfo, JPEG_COM, 0xFFFF);
|
|
||||||
for (int m = 0; m < 16; m++) {
|
|
||||||
jpeg_save_markers(&einfo, JPEG_APP0 + m, 0xFFFF);
|
|
||||||
}
|
|
||||||
|
|
||||||
jpeg_read_header(&einfo, true);
|
|
||||||
|
|
||||||
fclose(fp);
|
|
||||||
|
|
||||||
return einfo;
|
|
||||||
}
|
|
||||||
|
|
||||||
bool cs_jpeg_optimize(const char *input_file, const char *output_file, cs_jpeg_pars *options, const char *exif_src)
|
|
||||||
{
|
|
||||||
//File pointer for both input and output
|
|
||||||
FILE *fp;
|
|
||||||
|
|
||||||
//Those will hold the input/output structs
|
|
||||||
struct jpeg_decompress_struct srcinfo;
|
|
||||||
struct jpeg_compress_struct dstinfo;
|
|
||||||
|
|
||||||
//Error handling
|
|
||||||
struct jpeg_error_mgr jsrcerr, jdsterr;
|
|
||||||
|
|
||||||
//Input/Output array coefficents
|
|
||||||
jvirt_barray_ptr *src_coef_arrays;
|
|
||||||
jvirt_barray_ptr *dst_coef_arrays;
|
|
||||||
|
|
||||||
//Set errors and create the compress/decompress istances
|
|
||||||
srcinfo.err = jpeg_std_error(&jsrcerr);
|
|
||||||
jpeg_create_decompress(&srcinfo);
|
|
||||||
dstinfo.err = jpeg_std_error(&jdsterr);
|
|
||||||
jpeg_create_compress(&dstinfo);
|
|
||||||
|
|
||||||
if (!VERBOSE) {
|
|
||||||
srcinfo.err->emit_message = do_not_emit_message;
|
|
||||||
dstinfo.err->emit_message = do_not_emit_message;
|
|
||||||
}
|
|
||||||
|
|
||||||
//Check for errors
|
|
||||||
if ((fp = fopen(input_file, "rb")) == NULL) {
|
|
||||||
libcaesium_display_error(ERROR, 201);
|
|
||||||
}
|
|
||||||
|
|
||||||
//Create the IO instance for the input file
|
|
||||||
jpeg_stdio_src(&srcinfo, fp);
|
|
||||||
|
|
||||||
//Save EXIF info
|
|
||||||
if (options->exif_copy) {
|
|
||||||
jpeg_save_markers(&srcinfo, JPEG_COM, 0xFFFF);
|
|
||||||
for (int m = 0; m < 16; m++) {
|
|
||||||
jpeg_save_markers(&srcinfo, JPEG_APP0 + m, 0xFFFF);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
//Read the input headers
|
|
||||||
(void) jpeg_read_header(&srcinfo, true);
|
|
||||||
|
|
||||||
|
|
||||||
//Read input coefficents
|
|
||||||
src_coef_arrays = jpeg_read_coefficients(&srcinfo);
|
|
||||||
|
|
||||||
//Copy parameters
|
|
||||||
jpeg_copy_critical_parameters(&srcinfo, &dstinfo);
|
|
||||||
|
|
||||||
//Set coefficents array to be the same
|
|
||||||
dst_coef_arrays = src_coef_arrays;
|
|
||||||
|
|
||||||
//We don't need the input file anymore
|
|
||||||
fclose(fp);
|
|
||||||
|
|
||||||
//Check for errors
|
|
||||||
if ((fp = fopen(output_file, "wb")) == NULL) {
|
|
||||||
libcaesium_display_error(ERROR, 202);
|
|
||||||
}
|
|
||||||
|
|
||||||
//CRITICAL - This is the optimization step
|
|
||||||
dstinfo.optimize_coding = true;
|
|
||||||
|
|
||||||
//Set the output file parameters
|
|
||||||
jpeg_stdio_dest(&dstinfo, fp);
|
|
||||||
|
|
||||||
//Actually write the coefficients
|
|
||||||
jpeg_write_coefficients(&dstinfo, dst_coef_arrays);
|
|
||||||
|
|
||||||
//Write EXIF
|
|
||||||
if (options->exif_copy) {
|
|
||||||
if (strcmp(input_file, exif_src) == 0) {
|
|
||||||
jcopy_markers_execute(&srcinfo, &dstinfo);
|
|
||||||
} else {
|
|
||||||
//For standard compression EXIF data
|
|
||||||
struct jpeg_decompress_struct einfo = cs_get_markers(exif_src);
|
|
||||||
jcopy_markers_execute(&einfo, &dstinfo);
|
|
||||||
jpeg_destroy_decompress(&einfo);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
//Finish and free
|
|
||||||
jpeg_finish_compress(&dstinfo);
|
|
||||||
jpeg_destroy_compress(&dstinfo);
|
|
||||||
(void) jpeg_finish_decompress(&srcinfo);
|
|
||||||
jpeg_destroy_decompress(&srcinfo);
|
|
||||||
|
|
||||||
//Close the output file
|
|
||||||
fclose(fp);
|
|
||||||
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
int cs_jpeg_compress(const char *output_file, unsigned char *image_buffer, cs_jpeg_pars *options)
|
|
||||||
{
|
|
||||||
if (image_buffer == 0) {
|
|
||||||
return 2;
|
|
||||||
}
|
|
||||||
FILE *fp;
|
|
||||||
tjhandle tjCompressHandle;
|
|
||||||
unsigned char *output_buffer;
|
|
||||||
unsigned long output_size = 0;
|
|
||||||
output_buffer = NULL;
|
|
||||||
int result = 0;
|
|
||||||
|
|
||||||
//Check for errors
|
|
||||||
if ((fp = fopen(output_file, "wb")) == NULL) {
|
|
||||||
libcaesium_display_error(ERROR, 203);
|
|
||||||
}
|
|
||||||
|
|
||||||
tjCompressHandle = tjInitCompress();
|
|
||||||
|
|
||||||
result = tjCompress2(tjCompressHandle,
|
|
||||||
image_buffer,
|
|
||||||
options->width,
|
|
||||||
0,
|
|
||||||
options->height,
|
|
||||||
options->color_space,
|
|
||||||
&output_buffer,
|
|
||||||
&output_size,
|
|
||||||
options->subsample,
|
|
||||||
options->quality,
|
|
||||||
options->dct_method);
|
|
||||||
if (result == -1) {
|
|
||||||
libcaesium_display_error(ERROR, 207);
|
|
||||||
} else {
|
|
||||||
fwrite(output_buffer, output_size, 1, fp);
|
|
||||||
}
|
|
||||||
|
|
||||||
fclose(fp);
|
|
||||||
tjDestroy(tjCompressHandle);
|
|
||||||
tjFree(output_buffer);
|
|
||||||
tjFree(image_buffer);
|
|
||||||
|
|
||||||
return 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
unsigned char *cs_jpeg_decompress(const char *fileName, cs_jpeg_pars *options)
|
|
||||||
{
|
|
||||||
FILE *fp;
|
|
||||||
long sourceJpegBufferSize = 0;
|
|
||||||
unsigned char *sourceJpegBuffer = NULL;
|
|
||||||
tjhandle tjDecompressHandle;
|
|
||||||
int fileWidth = 0, fileHeight = 0, jpegSubsamp = 0, colorSpace = 0, result = 0;
|
|
||||||
|
|
||||||
if ((fp = fopen(fileName, "rb")) == NULL) {
|
|
||||||
libcaesium_display_error(ERROR, 204);
|
|
||||||
}
|
|
||||||
fseek(fp, 0, SEEK_END);
|
|
||||||
sourceJpegBufferSize = ftell(fp);
|
|
||||||
if (sourceJpegBufferSize == -1) {
|
|
||||||
libcaesium_display_error(ERROR, 205);
|
|
||||||
}
|
|
||||||
if (sourceJpegBufferSize > INT_MAX) {
|
|
||||||
libcaesium_display_error(ERROR, 206);
|
|
||||||
}
|
|
||||||
sourceJpegBuffer = tjAlloc((int) sourceJpegBufferSize);
|
|
||||||
|
|
||||||
fseek(fp, 0, SEEK_SET);
|
|
||||||
fread(sourceJpegBuffer, (size_t) sourceJpegBufferSize, 1, fp);
|
|
||||||
tjDecompressHandle = tjInitDecompress();
|
|
||||||
tjDecompressHeader3(tjDecompressHandle, sourceJpegBuffer, (unsigned long) sourceJpegBufferSize, &fileWidth, &fileHeight,
|
|
||||||
&jpegSubsamp, &colorSpace);
|
|
||||||
|
|
||||||
if (colorSpace == 4) { //CMYK
|
|
||||||
libcaesium_display_error(WARNING, 209);
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
options->width = (int) round(fileWidth * options->scale_factor);
|
|
||||||
options->height = (int) round(fileHeight * options->scale_factor);
|
|
||||||
|
|
||||||
options->subsample = (enum TJSAMP) jpegSubsamp;
|
|
||||||
options->color_space = colorSpace;
|
|
||||||
|
|
||||||
unsigned char *temp = tjAlloc(options->width * options->height * tjPixelSize[colorSpace]);
|
|
||||||
|
|
||||||
result = tjDecompress2(tjDecompressHandle,
|
|
||||||
sourceJpegBuffer,
|
|
||||||
(unsigned long) sourceJpegBufferSize,
|
|
||||||
temp,
|
|
||||||
options->width,
|
|
||||||
0,
|
|
||||||
options->height,
|
|
||||||
colorSpace,
|
|
||||||
options->dct_method);
|
|
||||||
if (result == -1) {
|
|
||||||
libcaesium_display_error(ERROR, 208);
|
|
||||||
}
|
|
||||||
|
|
||||||
fclose(fp);
|
|
||||||
tjDestroy(tjDecompressHandle);
|
|
||||||
tjFree(sourceJpegBuffer);
|
|
||||||
|
|
||||||
return temp;
|
|
||||||
}
|
|
||||||
|
|
||||||
void jcopy_markers_execute(j_decompress_ptr srcinfo, j_compress_ptr dstinfo)
|
|
||||||
{
|
|
||||||
jpeg_saved_marker_ptr marker;
|
|
||||||
|
|
||||||
for (marker = srcinfo->marker_list; marker != NULL; marker = marker->next) {
|
|
||||||
if (dstinfo->write_JFIF_header &&
|
|
||||||
marker->marker == JPEG_APP0 &&
|
|
||||||
marker->data_length >= 5 &&
|
|
||||||
GETJOCTET(marker->data[0]) == 0x4A &&
|
|
||||||
GETJOCTET(marker->data[1]) == 0x46 &&
|
|
||||||
GETJOCTET(marker->data[2]) == 0x49 &&
|
|
||||||
GETJOCTET(marker->data[3]) == 0x46 &&
|
|
||||||
GETJOCTET(marker->data[4]) == 0)
|
|
||||||
continue; /* reject duplicate JFIF */
|
|
||||||
if (dstinfo->write_Adobe_marker &&
|
|
||||||
marker->marker == JPEG_APP0 + 14 &&
|
|
||||||
marker->data_length >= 5 &&
|
|
||||||
GETJOCTET(marker->data[0]) == 0x41 &&
|
|
||||||
GETJOCTET(marker->data[1]) == 0x64 &&
|
|
||||||
GETJOCTET(marker->data[2]) == 0x6F &&
|
|
||||||
GETJOCTET(marker->data[3]) == 0x62 &&
|
|
||||||
GETJOCTET(marker->data[4]) == 0x65)
|
|
||||||
continue; /* reject duplicate Adobe */
|
|
||||||
jpeg_write_marker(dstinfo, marker->marker,
|
|
||||||
marker->data, marker->data_length);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
@ -1,18 +0,0 @@
|
||||||
#ifndef LIBCAESIUM_JPEG_H
|
|
||||||
#define LIBCAESIUM_JPEG_H
|
|
||||||
|
|
||||||
#include <jpeglib.h>
|
|
||||||
|
|
||||||
#include "caesium.h"
|
|
||||||
|
|
||||||
bool cs_jpeg_optimize(const char *input_file, const char *output_file, cs_jpeg_pars *options, const char *exif_src);
|
|
||||||
|
|
||||||
struct jpeg_decompress_struct cs_get_markers(const char *input);
|
|
||||||
|
|
||||||
int cs_jpeg_compress(const char *output_file, unsigned char *image_buffer, cs_jpeg_pars *options);
|
|
||||||
|
|
||||||
unsigned char *cs_jpeg_decompress(const char *fileName, cs_jpeg_pars *options);
|
|
||||||
|
|
||||||
void jcopy_markers_execute(j_decompress_ptr srcinfo, j_compress_ptr dstinfo);
|
|
||||||
|
|
||||||
#endif //LIBCAESIUM_JPEG_H
|
|
||||||
112
caesium/png.c
112
caesium/png.c
|
|
@ -1,112 +0,0 @@
|
||||||
#define STB_IMAGE_RESIZE_IMPLEMENTATION
|
|
||||||
#define STB_IMAGE_IMPLEMENTATION
|
|
||||||
#define STB_IMAGE_WRITE_IMPLEMENTATION
|
|
||||||
|
|
||||||
#define STBIW_ASSERT(x)
|
|
||||||
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <zopflipng_lib.h>
|
|
||||||
|
|
||||||
#include "vendor/stb_image.h"
|
|
||||||
#include "vendor/stb_image_write.h"
|
|
||||||
#include "vendor/stb_image_resize.h"
|
|
||||||
#include "png.h"
|
|
||||||
#include "vendor/lodepng.h"
|
|
||||||
#include "error.h"
|
|
||||||
|
|
||||||
bool cs_png_optimize(const char *input, const char *output, cs_png_pars *options)
|
|
||||||
{
|
|
||||||
bool result = false;
|
|
||||||
CZopfliPNGOptions png_options;
|
|
||||||
int error_code = 0;
|
|
||||||
|
|
||||||
if (options->scale_factor > 0.0 && options->scale_factor < 1.0) {
|
|
||||||
result = cs_png_resize(input, output, options->scale_factor);
|
|
||||||
if (!result) {
|
|
||||||
libcaesium_display_error(ERROR, 304);
|
|
||||||
return result;
|
|
||||||
}
|
|
||||||
} else if (options->scale_factor != 1.0) {
|
|
||||||
libcaesium_display_error(ERROR, 305);
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
CZopfliPNGSetDefaults(&png_options);
|
|
||||||
|
|
||||||
unsigned char *orig_buffer;
|
|
||||||
size_t orig_buffer_size;
|
|
||||||
|
|
||||||
unsigned char *resultpng = NULL;
|
|
||||||
size_t resultpng_size;
|
|
||||||
|
|
||||||
png_options.num_iterations = options->iterations;
|
|
||||||
png_options.num_iterations_large = options->iterations_large;
|
|
||||||
png_options.block_split_strategy = options->block_split_strategy;
|
|
||||||
|
|
||||||
png_options.lossy_8bit = options->lossy_8;
|
|
||||||
png_options.lossy_transparent = options->transparent;
|
|
||||||
|
|
||||||
png_options.auto_filter_strategy = options->auto_filter_strategy;
|
|
||||||
|
|
||||||
if (lodepng_load_file(&orig_buffer, &orig_buffer_size, options->scale_factor == 1 ? input : output) != 0) {
|
|
||||||
error_code = 300;
|
|
||||||
goto cleanup;
|
|
||||||
}
|
|
||||||
|
|
||||||
int code = CZopfliPNGOptimize(orig_buffer,
|
|
||||||
orig_buffer_size,
|
|
||||||
&png_options,
|
|
||||||
0,
|
|
||||||
&resultpng,
|
|
||||||
&resultpng_size);
|
|
||||||
|
|
||||||
if (code != 0) {
|
|
||||||
error_code = 301;
|
|
||||||
goto cleanup;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (lodepng_save_file(resultpng, resultpng_size, output) != 0) {
|
|
||||||
error_code = 302;
|
|
||||||
goto cleanup;
|
|
||||||
}
|
|
||||||
|
|
||||||
result = true;
|
|
||||||
|
|
||||||
cleanup:
|
|
||||||
free(orig_buffer);
|
|
||||||
free(resultpng);
|
|
||||||
if (error_code != 0) {
|
|
||||||
libcaesium_display_error(ERROR, error_code);
|
|
||||||
}
|
|
||||||
return result;
|
|
||||||
}
|
|
||||||
|
|
||||||
bool cs_png_resize(const char *input, const char *output, double factor)
|
|
||||||
{
|
|
||||||
unsigned char *input_pixels;
|
|
||||||
unsigned char *output_pixels;
|
|
||||||
int w, h;
|
|
||||||
int n;
|
|
||||||
int out_w, out_h;
|
|
||||||
int result;
|
|
||||||
|
|
||||||
input_pixels = stbi_load(input, &w, &h, &n, 0);
|
|
||||||
if (input_pixels == 0) {
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
out_w = (int) round(w * factor);
|
|
||||||
out_h = (int) round(h * factor);
|
|
||||||
|
|
||||||
output_pixels = (unsigned char *) malloc(out_w * out_h * n);
|
|
||||||
result = stbir_resize_uint8(input_pixels, w, h, 0, output_pixels, out_w, out_h, 0, n);
|
|
||||||
if (!result) {
|
|
||||||
free(output_pixels);
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
result = stbi_write_png(output, out_w, out_h, n, output_pixels, 0);
|
|
||||||
if (!result) {
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
@ -1,10 +0,0 @@
|
||||||
#ifndef LIBCAESIUM_PNG_H
|
|
||||||
#define LIBCAESIUM_PNG_H
|
|
||||||
|
|
||||||
#include "caesium.h"
|
|
||||||
|
|
||||||
bool cs_png_optimize(const char *input, const char *output, cs_png_pars *options);
|
|
||||||
|
|
||||||
bool cs_png_resize(const char *input, const char *output, double factor);
|
|
||||||
|
|
||||||
#endif //LIBCAESIUM_PNG_H
|
|
||||||
|
|
@ -1,27 +0,0 @@
|
||||||
#include <stdlib.h>
|
|
||||||
#include <stdio.h>
|
|
||||||
|
|
||||||
#include "utils.h"
|
|
||||||
#include "error.h"
|
|
||||||
|
|
||||||
image_type detect_image_type(FILE *pFile)
|
|
||||||
{
|
|
||||||
unsigned char buffer[2];
|
|
||||||
|
|
||||||
if (pFile == NULL) {
|
|
||||||
libcaesium_display_error(WARNING, 101);
|
|
||||||
return UNKN;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (fread(buffer, 1, 2, pFile) < 2) {
|
|
||||||
return UNKN;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (buffer[0] == 0xFF && buffer[1] == 0xD8) {
|
|
||||||
return CS_JPEG;
|
|
||||||
} else if (buffer[0] == 0x89 && buffer[1] == 0x50) {
|
|
||||||
return CS_PNG;
|
|
||||||
}
|
|
||||||
|
|
||||||
return UNKN;
|
|
||||||
}
|
|
||||||
|
|
@ -1,10 +0,0 @@
|
||||||
#ifndef LIBCAESIUM_UTILS_H
|
|
||||||
#define LIBCAESIUM_UTILS_H
|
|
||||||
|
|
||||||
#include <stdio.h>
|
|
||||||
|
|
||||||
#include "caesium.h"
|
|
||||||
|
|
||||||
image_type detect_image_type(FILE *pFile);
|
|
||||||
|
|
||||||
#endif
|
|
||||||
File diff suppressed because it is too large
Load Diff
|
|
@ -1,939 +0,0 @@
|
||||||
/*
|
|
||||||
LodePNG version 20131222
|
|
||||||
|
|
||||||
Copyright (c) 2005-2013 Lode Vandevenne
|
|
||||||
|
|
||||||
This software is provided 'as-is', without any express or implied
|
|
||||||
warranty. In no event will the authors be held liable for any damages
|
|
||||||
arising from the use of this software.
|
|
||||||
|
|
||||||
Permission is granted to anyone to use this software for any purpose,
|
|
||||||
including commercial applications, and to alter it and redistribute it
|
|
||||||
freely, subject to the following restrictions:
|
|
||||||
|
|
||||||
1. The origin of this software must not be misrepresented; you must not
|
|
||||||
claim that you wrote the original software. If you use this software
|
|
||||||
in a product, an acknowledgment in the product documentation would be
|
|
||||||
appreciated but is not required.
|
|
||||||
|
|
||||||
2. Altered source versions must be plainly marked as such, and must not be
|
|
||||||
misrepresented as being the original software.
|
|
||||||
|
|
||||||
3. This notice may not be removed or altered from any source
|
|
||||||
distribution.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef LODEPNG_H
|
|
||||||
#define LODEPNG_H
|
|
||||||
|
|
||||||
#include <string.h> /*for size_t*/
|
|
||||||
|
|
||||||
#ifdef __cplusplus
|
|
||||||
#include <vector>
|
|
||||||
#include <string>
|
|
||||||
#endif /*__cplusplus*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
The following #defines are used to create code sections. They can be disabled
|
|
||||||
to disable code sections, which can give faster compile time and smaller binary.
|
|
||||||
The "NO_COMPILE" defines are designed to be used to pass as defines to the
|
|
||||||
compiler command to disable them without modifying this header, e.g.
|
|
||||||
-DLODEPNG_NO_COMPILE_ZLIB for gcc.
|
|
||||||
*/
|
|
||||||
/*deflate & zlib. If disabled, you must specify alternative zlib functions in
|
|
||||||
the custom_zlib field of the compress and decompress settings*/
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_ZLIB
|
|
||||||
#define LODEPNG_COMPILE_ZLIB
|
|
||||||
#endif
|
|
||||||
/*png encoder and png decoder*/
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_PNG
|
|
||||||
#define LODEPNG_COMPILE_PNG
|
|
||||||
#endif
|
|
||||||
/*deflate&zlib decoder and png decoder*/
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_DECODER
|
|
||||||
#define LODEPNG_COMPILE_DECODER
|
|
||||||
#endif
|
|
||||||
/*deflate&zlib encoder and png encoder*/
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_ENCODER
|
|
||||||
#define LODEPNG_COMPILE_ENCODER
|
|
||||||
#endif
|
|
||||||
/*the optional built in harddisk file loading and saving functions*/
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_DISK
|
|
||||||
#define LODEPNG_COMPILE_DISK
|
|
||||||
#endif
|
|
||||||
/*support for chunks other than IHDR, IDAT, PLTE, tRNS, IEND: ancillary and unknown chunks*/
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_ANCILLARY_CHUNKS
|
|
||||||
#define LODEPNG_COMPILE_ANCILLARY_CHUNKS
|
|
||||||
#endif
|
|
||||||
/*ability to convert error numerical codes to English text string*/
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_ERROR_TEXT
|
|
||||||
#define LODEPNG_COMPILE_ERROR_TEXT
|
|
||||||
#endif
|
|
||||||
/*Compile the default allocators (C's free, malloc and realloc). If you disable this,
|
|
||||||
you can define the functions lodepng_free, lodepng_malloc and lodepng_realloc in your
|
|
||||||
source files with custom allocators.*/
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_ALLOCATORS
|
|
||||||
#define LODEPNG_COMPILE_ALLOCATORS
|
|
||||||
#endif
|
|
||||||
/*compile the C++ version (you can disable the C++ wrapper here even when compiling for C++)*/
|
|
||||||
#ifdef __cplusplus
|
|
||||||
#ifndef LODEPNG_NO_COMPILE_CPP
|
|
||||||
#define LODEPNG_COMPILE_CPP
|
|
||||||
#endif
|
|
||||||
#endif
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_PNG
|
|
||||||
/*The PNG color types (also used for raw).*/
|
|
||||||
typedef enum LodePNGColorType
|
|
||||||
{
|
|
||||||
LCT_GREY = 0, /*greyscale: 1,2,4,8,16 bit*/
|
|
||||||
LCT_RGB = 2, /*RGB: 8,16 bit*/
|
|
||||||
LCT_PALETTE = 3, /*palette: 1,2,4,8 bit*/
|
|
||||||
LCT_GREY_ALPHA = 4, /*greyscale with alpha: 8,16 bit*/
|
|
||||||
LCT_RGBA = 6 /*RGB with alpha: 8,16 bit*/
|
|
||||||
} LodePNGColorType;
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
|
|
||||||
/*
|
|
||||||
Converts PNG data in memory to raw pixel data.
|
|
||||||
out: Output parameter. Pointer to buffer that will contain the raw pixel data.
|
|
||||||
After decoding, its size is w * h * (bytes per pixel) bytes larger than
|
|
||||||
initially. Bytes per pixel depends on colortype and bitdepth.
|
|
||||||
Must be freed after usage with free(*out).
|
|
||||||
Note: for 16-bit per channel colors, uses big endian format like PNG does.
|
|
||||||
w: Output parameter. Pointer to width of pixel data.
|
|
||||||
h: Output parameter. Pointer to height of pixel data.
|
|
||||||
in: Memory buffer with the PNG file.
|
|
||||||
insize: size of the in buffer.
|
|
||||||
colortype: the desired color type for the raw output image. See explanation on PNG color types.
|
|
||||||
bitdepth: the desired bit depth for the raw output image. See explanation on PNG color types.
|
|
||||||
Return value: LodePNG error code (0 means no error).
|
|
||||||
*/
|
|
||||||
unsigned lodepng_decode_memory(unsigned char **out, unsigned *w, unsigned *h,
|
|
||||||
const unsigned char *in, size_t insize,
|
|
||||||
LodePNGColorType colortype, unsigned bitdepth);
|
|
||||||
|
|
||||||
/*Same as lodepng_decode_memory, but always decodes to 32-bit RGBA raw image*/
|
|
||||||
unsigned lodepng_decode32(unsigned char **out, unsigned *w, unsigned *h,
|
|
||||||
const unsigned char *in, size_t insize);
|
|
||||||
|
|
||||||
/*Same as lodepng_decode_memory, but always decodes to 24-bit RGB raw image*/
|
|
||||||
unsigned lodepng_decode24(unsigned char **out, unsigned *w, unsigned *h,
|
|
||||||
const unsigned char *in, size_t insize);
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DISK
|
|
||||||
|
|
||||||
/*
|
|
||||||
Load PNG from disk, from file with given name.
|
|
||||||
Same as the other decode functions, but instead takes a filename as input.
|
|
||||||
*/
|
|
||||||
unsigned lodepng_decode_file(unsigned char **out, unsigned *w, unsigned *h,
|
|
||||||
const char *filename,
|
|
||||||
LodePNGColorType colortype, unsigned bitdepth);
|
|
||||||
|
|
||||||
/*Same as lodepng_decode_file, but always decodes to 32-bit RGBA raw image.*/
|
|
||||||
unsigned lodepng_decode32_file(unsigned char **out, unsigned *w, unsigned *h,
|
|
||||||
const char *filename);
|
|
||||||
|
|
||||||
/*Same as lodepng_decode_file, but always decodes to 24-bit RGB raw image.*/
|
|
||||||
unsigned lodepng_decode24_file(unsigned char **out, unsigned *w, unsigned *h,
|
|
||||||
const char *filename);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_DISK*/
|
|
||||||
#endif /*LODEPNG_COMPILE_DECODER*/
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
|
|
||||||
/*
|
|
||||||
Converts raw pixel data into a PNG image in memory. The colortype and bitdepth
|
|
||||||
of the output PNG image cannot be chosen, they are automatically determined
|
|
||||||
by the colortype, bitdepth and content of the input pixel data.
|
|
||||||
Note: for 16-bit per channel colors, needs big endian format like PNG does.
|
|
||||||
out: Output parameter. Pointer to buffer that will contain the PNG image data.
|
|
||||||
Must be freed after usage with free(*out).
|
|
||||||
outsize: Output parameter. Pointer to the size in bytes of the out buffer.
|
|
||||||
image: The raw pixel data to encode. The size of this buffer should be
|
|
||||||
w * h * (bytes per pixel), bytes per pixel depends on colortype and bitdepth.
|
|
||||||
w: width of the raw pixel data in pixels.
|
|
||||||
h: height of the raw pixel data in pixels.
|
|
||||||
colortype: the color type of the raw input image. See explanation on PNG color types.
|
|
||||||
bitdepth: the bit depth of the raw input image. See explanation on PNG color types.
|
|
||||||
Return value: LodePNG error code (0 means no error).
|
|
||||||
*/
|
|
||||||
unsigned lodepng_encode_memory(unsigned char **out, size_t *outsize,
|
|
||||||
const unsigned char *image, unsigned w, unsigned h,
|
|
||||||
LodePNGColorType colortype, unsigned bitdepth);
|
|
||||||
|
|
||||||
/*Same as lodepng_encode_memory, but always encodes from 32-bit RGBA raw image.*/
|
|
||||||
unsigned lodepng_encode32(unsigned char **out, size_t *outsize,
|
|
||||||
const unsigned char *image, unsigned w, unsigned h);
|
|
||||||
|
|
||||||
/*Same as lodepng_encode_memory, but always encodes from 24-bit RGB raw image.*/
|
|
||||||
unsigned lodepng_encode24(unsigned char **out, size_t *outsize,
|
|
||||||
const unsigned char *image, unsigned w, unsigned h);
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DISK
|
|
||||||
|
|
||||||
/*
|
|
||||||
Converts raw pixel data into a PNG file on disk.
|
|
||||||
Same as the other encode functions, but instead takes a filename as output.
|
|
||||||
NOTE: This overwrites existing files without warning!
|
|
||||||
*/
|
|
||||||
unsigned lodepng_encode_file(const char *filename,
|
|
||||||
const unsigned char *image, unsigned w, unsigned h,
|
|
||||||
LodePNGColorType colortype, unsigned bitdepth);
|
|
||||||
|
|
||||||
/*Same as lodepng_encode_file, but always encodes from 32-bit RGBA raw image.*/
|
|
||||||
unsigned lodepng_encode32_file(const char *filename,
|
|
||||||
const unsigned char *image, unsigned w, unsigned h);
|
|
||||||
|
|
||||||
/*Same as lodepng_encode_file, but always encodes from 24-bit RGB raw image.*/
|
|
||||||
unsigned lodepng_encode24_file(const char *filename,
|
|
||||||
const unsigned char *image, unsigned w, unsigned h);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_DISK*/
|
|
||||||
#endif /*LODEPNG_COMPILE_ENCODER*/
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_CPP
|
|
||||||
namespace lodepng
|
|
||||||
{
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
/*Same as lodepng_decode_memory, but decodes to an std::vector.*/
|
|
||||||
unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
|
|
||||||
const unsigned char* in, size_t insize,
|
|
||||||
LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
|
|
||||||
unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
|
|
||||||
const std::vector<unsigned char>& in,
|
|
||||||
LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
|
|
||||||
#ifdef LODEPNG_COMPILE_DISK
|
|
||||||
/*
|
|
||||||
Converts PNG file from disk to raw pixel data in memory.
|
|
||||||
Same as the other decode functions, but instead takes a filename as input.
|
|
||||||
*/
|
|
||||||
unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
|
|
||||||
const std::string& filename,
|
|
||||||
LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
|
|
||||||
#endif //LODEPNG_COMPILE_DISK
|
|
||||||
#endif //LODEPNG_COMPILE_DECODER
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
/*Same as lodepng_encode_memory, but encodes to an std::vector.*/
|
|
||||||
unsigned encode(std::vector<unsigned char>& out,
|
|
||||||
const unsigned char* in, unsigned w, unsigned h,
|
|
||||||
LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
|
|
||||||
unsigned encode(std::vector<unsigned char>& out,
|
|
||||||
const std::vector<unsigned char>& in, unsigned w, unsigned h,
|
|
||||||
LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
|
|
||||||
#ifdef LODEPNG_COMPILE_DISK
|
|
||||||
/*
|
|
||||||
Converts 32-bit RGBA raw pixel data into a PNG file on disk.
|
|
||||||
Same as the other encode functions, but instead takes a filename as output.
|
|
||||||
NOTE: This overwrites existing files without warning!
|
|
||||||
*/
|
|
||||||
unsigned encode(const std::string& filename,
|
|
||||||
const unsigned char* in, unsigned w, unsigned h,
|
|
||||||
LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
|
|
||||||
unsigned encode(const std::string& filename,
|
|
||||||
const std::vector<unsigned char>& in, unsigned w, unsigned h,
|
|
||||||
LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
|
|
||||||
#endif //LODEPNG_COMPILE_DISK
|
|
||||||
#endif //LODEPNG_COMPILE_ENCODER
|
|
||||||
} //namespace lodepng
|
|
||||||
#endif /*LODEPNG_COMPILE_CPP*/
|
|
||||||
#endif /*LODEPNG_COMPILE_PNG*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ERROR_TEXT
|
|
||||||
|
|
||||||
/*Returns an English description of the numerical error code.*/
|
|
||||||
const char *lodepng_error_text(unsigned code);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_ERROR_TEXT*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
/*Settings for zlib decompression*/
|
|
||||||
typedef struct LodePNGDecompressSettings LodePNGDecompressSettings;
|
|
||||||
|
|
||||||
struct LodePNGDecompressSettings
|
|
||||||
{
|
|
||||||
unsigned ignore_adler32; /*if 1, continue and don't give an error message if the Adler32 checksum is corrupted*/
|
|
||||||
|
|
||||||
/*use custom zlib decoder instead of built in one (default: null)*/
|
|
||||||
unsigned (*custom_zlib)(unsigned char **, size_t *,
|
|
||||||
const unsigned char *, size_t,
|
|
||||||
const LodePNGDecompressSettings *);
|
|
||||||
|
|
||||||
/*use custom deflate decoder instead of built in one (default: null)
|
|
||||||
if custom_zlib is used, custom_deflate is ignored since only the built in
|
|
||||||
zlib function will call custom_deflate*/
|
|
||||||
unsigned (*custom_inflate)(unsigned char **, size_t *,
|
|
||||||
const unsigned char *, size_t,
|
|
||||||
const LodePNGDecompressSettings *);
|
|
||||||
|
|
||||||
const void *custom_context; /*optional custom settings for custom functions*/
|
|
||||||
};
|
|
||||||
|
|
||||||
extern const LodePNGDecompressSettings lodepng_default_decompress_settings;
|
|
||||||
|
|
||||||
void lodepng_decompress_settings_init(LodePNGDecompressSettings *settings);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_DECODER*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
/*
|
|
||||||
Settings for zlib compression. Tweaking these settings tweaks the balance
|
|
||||||
between speed and compression ratio.
|
|
||||||
*/
|
|
||||||
typedef struct LodePNGCompressSettings LodePNGCompressSettings;
|
|
||||||
|
|
||||||
struct LodePNGCompressSettings /*deflate = compress*/
|
|
||||||
{
|
|
||||||
/*LZ77 related settings*/
|
|
||||||
unsigned btype; /*the block type for LZ (0, 1, 2 or 3, see zlib standard). Should be 2 for proper compression.*/
|
|
||||||
unsigned use_lz77; /*whether or not to use LZ77. Should be 1 for proper compression.*/
|
|
||||||
unsigned windowsize; /*must be a power of two <= 32768. higher compresses more but is slower. Typical value: 2048.*/
|
|
||||||
unsigned minmatch; /*mininum lz77 length. 3 is normally best, 6 can be better for some PNGs. Default: 0*/
|
|
||||||
unsigned nicematch; /*stop searching if >= this length found. Set to 258 for best compression. Default: 128*/
|
|
||||||
unsigned lazymatching; /*use lazy matching: better compression but a bit slower. Default: true*/
|
|
||||||
|
|
||||||
/*use custom zlib encoder instead of built in one (default: null)*/
|
|
||||||
unsigned (*custom_zlib)(unsigned char **, size_t *,
|
|
||||||
const unsigned char *, size_t,
|
|
||||||
const LodePNGCompressSettings *);
|
|
||||||
|
|
||||||
/*use custom deflate encoder instead of built in one (default: null)
|
|
||||||
if custom_zlib is used, custom_deflate is ignored since only the built in
|
|
||||||
zlib function will call custom_deflate*/
|
|
||||||
unsigned (*custom_deflate)(unsigned char **, size_t *,
|
|
||||||
const unsigned char *, size_t,
|
|
||||||
const LodePNGCompressSettings *);
|
|
||||||
|
|
||||||
const void *custom_context; /*optional custom settings for custom functions*/
|
|
||||||
};
|
|
||||||
|
|
||||||
extern const LodePNGCompressSettings lodepng_default_compress_settings;
|
|
||||||
|
|
||||||
void lodepng_compress_settings_init(LodePNGCompressSettings *settings);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_ENCODER*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_PNG
|
|
||||||
/*
|
|
||||||
Color mode of an image. Contains all information required to decode the pixel
|
|
||||||
bits to RGBA colors. This information is the same as used in the PNG file
|
|
||||||
format, and is used both for PNG and raw image data in LodePNG.
|
|
||||||
*/
|
|
||||||
typedef struct LodePNGColorMode
|
|
||||||
{
|
|
||||||
/*header (IHDR)*/
|
|
||||||
LodePNGColorType colortype; /*color type, see PNG standard or documentation further in this header file*/
|
|
||||||
unsigned bitdepth; /*bits per sample, see PNG standard or documentation further in this header file*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
palette (PLTE and tRNS)
|
|
||||||
|
|
||||||
Dynamically allocated with the colors of the palette, including alpha.
|
|
||||||
When encoding a PNG, to store your colors in the palette of the LodePNGColorMode, first use
|
|
||||||
lodepng_palette_clear, then for each color use lodepng_palette_add.
|
|
||||||
If you encode an image without alpha with palette, don't forget to put value 255 in each A byte of the palette.
|
|
||||||
|
|
||||||
When decoding, by default you can ignore this palette, since LodePNG already
|
|
||||||
fills the palette colors in the pixels of the raw RGBA output.
|
|
||||||
|
|
||||||
The palette is only supported for color type 3.
|
|
||||||
*/
|
|
||||||
unsigned char *palette; /*palette in RGBARGBA... order. When allocated, must be either 0, or have size 1024*/
|
|
||||||
size_t palettesize; /*palette size in number of colors (amount of bytes is 4 * palettesize)*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
transparent color key (tRNS)
|
|
||||||
|
|
||||||
This color uses the same bit depth as the bitdepth value in this struct, which can be 1-bit to 16-bit.
|
|
||||||
For greyscale PNGs, r, g and b will all 3 be set to the same.
|
|
||||||
|
|
||||||
When decoding, by default you can ignore this information, since LodePNG sets
|
|
||||||
pixels with this key to transparent already in the raw RGBA output.
|
|
||||||
|
|
||||||
The color key is only supported for color types 0 and 2.
|
|
||||||
*/
|
|
||||||
unsigned key_defined; /*is a transparent color key given? 0 = false, 1 = true*/
|
|
||||||
unsigned key_r; /*red/greyscale component of color key*/
|
|
||||||
unsigned key_g; /*green component of color key*/
|
|
||||||
unsigned key_b; /*blue component of color key*/
|
|
||||||
} LodePNGColorMode;
|
|
||||||
|
|
||||||
/*init, cleanup and copy functions to use with this struct*/
|
|
||||||
void lodepng_color_mode_init(LodePNGColorMode *info);
|
|
||||||
|
|
||||||
void lodepng_color_mode_cleanup(LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*return value is error code (0 means no error)*/
|
|
||||||
unsigned lodepng_color_mode_copy(LodePNGColorMode *dest, const LodePNGColorMode *source);
|
|
||||||
|
|
||||||
void lodepng_palette_clear(LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*add 1 color to the palette*/
|
|
||||||
unsigned lodepng_palette_add(LodePNGColorMode *info,
|
|
||||||
unsigned char r, unsigned char g, unsigned char b, unsigned char a);
|
|
||||||
|
|
||||||
/*get the total amount of bits per pixel, based on colortype and bitdepth in the struct*/
|
|
||||||
unsigned lodepng_get_bpp(const LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*get the amount of color channels used, based on colortype in the struct.
|
|
||||||
If a palette is used, it counts as 1 channel.*/
|
|
||||||
unsigned lodepng_get_channels(const LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*is it a greyscale type? (only colortype 0 or 4)*/
|
|
||||||
unsigned lodepng_is_greyscale_type(const LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*has it got an alpha channel? (only colortype 2 or 6)*/
|
|
||||||
unsigned lodepng_is_alpha_type(const LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*has it got a palette? (only colortype 3)*/
|
|
||||||
unsigned lodepng_is_palette_type(const LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*only returns true if there is a palette and there is a value in the palette with alpha < 255.
|
|
||||||
Loops through the palette to check this.*/
|
|
||||||
unsigned lodepng_has_palette_alpha(const LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Check if the given color info indicates the possibility of having non-opaque pixels in the PNG image.
|
|
||||||
Returns true if the image can have translucent or invisible pixels (it still be opaque if it doesn't use such pixels).
|
|
||||||
Returns false if the image can only have opaque pixels.
|
|
||||||
In detail, it returns true only if it's a color type with alpha, or has a palette with non-opaque values,
|
|
||||||
or if "key_defined" is true.
|
|
||||||
*/
|
|
||||||
unsigned lodepng_can_have_alpha(const LodePNGColorMode *info);
|
|
||||||
|
|
||||||
/*Returns the byte size of a raw image buffer with given width, height and color mode*/
|
|
||||||
size_t lodepng_get_raw_size(unsigned w, unsigned h, const LodePNGColorMode *color);
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
|
|
||||||
/*The information of a Time chunk in PNG.*/
|
|
||||||
typedef struct LodePNGTime
|
|
||||||
{
|
|
||||||
unsigned year; /*2 bytes used (0-65535)*/
|
|
||||||
unsigned month; /*1-12*/
|
|
||||||
unsigned day; /*1-31*/
|
|
||||||
unsigned hour; /*0-23*/
|
|
||||||
unsigned minute; /*0-59*/
|
|
||||||
unsigned second; /*0-60 (to allow for leap seconds)*/
|
|
||||||
} LodePNGTime;
|
|
||||||
#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
|
|
||||||
|
|
||||||
/*Information about the PNG image, except pixels, width and height.*/
|
|
||||||
typedef struct LodePNGInfo
|
|
||||||
{
|
|
||||||
/*header (IHDR), palette (PLTE) and transparency (tRNS) chunks*/
|
|
||||||
unsigned compression_method;/*compression method of the original file. Always 0.*/
|
|
||||||
unsigned filter_method; /*filter method of the original file*/
|
|
||||||
unsigned interlace_method; /*interlace method of the original file*/
|
|
||||||
LodePNGColorMode color; /*color type and bits, palette and transparency of the PNG file*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
|
|
||||||
/*
|
|
||||||
suggested background color chunk (bKGD)
|
|
||||||
This color uses the same color mode as the PNG (except alpha channel), which can be 1-bit to 16-bit.
|
|
||||||
|
|
||||||
For greyscale PNGs, r, g and b will all 3 be set to the same. When encoding
|
|
||||||
the encoder writes the red one. For palette PNGs: When decoding, the RGB value
|
|
||||||
will be stored, not a palette index. But when encoding, specify the index of
|
|
||||||
the palette in background_r, the other two are then ignored.
|
|
||||||
|
|
||||||
The decoder does not use this background color to edit the color of pixels.
|
|
||||||
*/
|
|
||||||
unsigned background_defined; /*is a suggested background color given?*/
|
|
||||||
unsigned background_r; /*red component of suggested background color*/
|
|
||||||
unsigned background_g; /*green component of suggested background color*/
|
|
||||||
unsigned background_b; /*blue component of suggested background color*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
non-international text chunks (tEXt and zTXt)
|
|
||||||
|
|
||||||
The char** arrays each contain num strings. The actual messages are in
|
|
||||||
text_strings, while text_keys are keywords that give a short description what
|
|
||||||
the actual text represents, e.g. Title, Author, Description, or anything else.
|
|
||||||
|
|
||||||
A keyword is minimum 1 character and maximum 79 characters long. It's
|
|
||||||
discouraged to use a single line length longer than 79 characters for texts.
|
|
||||||
|
|
||||||
Don't allocate these text buffers yourself. Use the init/cleanup functions
|
|
||||||
correctly and use lodepng_add_text and lodepng_clear_text.
|
|
||||||
*/
|
|
||||||
size_t text_num; /*the amount of texts in these char** buffers (there may be more texts in itext)*/
|
|
||||||
char **text_keys; /*the keyword of a text chunk (e.g. "Comment")*/
|
|
||||||
char **text_strings; /*the actual text*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
international text chunks (iTXt)
|
|
||||||
Similar to the non-international text chunks, but with additional strings
|
|
||||||
"langtags" and "transkeys".
|
|
||||||
*/
|
|
||||||
size_t itext_num; /*the amount of international texts in this PNG*/
|
|
||||||
char **itext_keys; /*the English keyword of the text chunk (e.g. "Comment")*/
|
|
||||||
char **itext_langtags; /*language tag for this text's language, ISO/IEC 646 string, e.g. ISO 639 language tag*/
|
|
||||||
char **itext_transkeys; /*keyword translated to the international language - UTF-8 string*/
|
|
||||||
char **itext_strings; /*the actual international text - UTF-8 string*/
|
|
||||||
|
|
||||||
/*time chunk (tIME)*/
|
|
||||||
unsigned time_defined; /*set to 1 to make the encoder generate a tIME chunk*/
|
|
||||||
LodePNGTime time;
|
|
||||||
|
|
||||||
/*phys chunk (pHYs)*/
|
|
||||||
unsigned phys_defined; /*if 0, there is no pHYs chunk and the values below are undefined, if 1 else there is one*/
|
|
||||||
unsigned phys_x; /*pixels per unit in x direction*/
|
|
||||||
unsigned phys_y; /*pixels per unit in y direction*/
|
|
||||||
unsigned phys_unit; /*may be 0 (unknown unit) or 1 (metre)*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
unknown chunks
|
|
||||||
There are 3 buffers, one for each position in the PNG where unknown chunks can appear
|
|
||||||
each buffer contains all unknown chunks for that position consecutively
|
|
||||||
The 3 buffers are the unknown chunks between certain critical chunks:
|
|
||||||
0: IHDR-PLTE, 1: PLTE-IDAT, 2: IDAT-IEND
|
|
||||||
Do not allocate or traverse this data yourself. Use the chunk traversing functions declared
|
|
||||||
later, such as lodepng_chunk_next and lodepng_chunk_append, to read/write this struct.
|
|
||||||
*/
|
|
||||||
unsigned char *unknown_chunks_data[3];
|
|
||||||
size_t unknown_chunks_size[3]; /*size in bytes of the unknown chunks, given for protection*/
|
|
||||||
#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
|
|
||||||
} LodePNGInfo;
|
|
||||||
|
|
||||||
/*init, cleanup and copy functions to use with this struct*/
|
|
||||||
void lodepng_info_init(LodePNGInfo *info);
|
|
||||||
|
|
||||||
void lodepng_info_cleanup(LodePNGInfo *info);
|
|
||||||
|
|
||||||
/*return value is error code (0 means no error)*/
|
|
||||||
unsigned lodepng_info_copy(LodePNGInfo *dest, const LodePNGInfo *source);
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
|
|
||||||
|
|
||||||
void lodepng_clear_text(LodePNGInfo *info); /*use this to clear the texts again after you filled them in*/
|
|
||||||
unsigned lodepng_add_text(LodePNGInfo *info, const char *key, const char *str); /*push back both texts at once*/
|
|
||||||
|
|
||||||
void lodepng_clear_itext(LodePNGInfo *info); /*use this to clear the itexts again after you filled them in*/
|
|
||||||
unsigned lodepng_add_itext(LodePNGInfo *info, const char *key, const char *langtag,
|
|
||||||
const char *transkey, const char *str); /*push back the 4 texts of 1 chunk at once*/
|
|
||||||
#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
Converts raw buffer from one color type to another color type, based on
|
|
||||||
LodePNGColorMode structs to describe the input and output color type.
|
|
||||||
See the reference manual at the end of this header file to see which color conversions are supported.
|
|
||||||
return value = LodePNG error code (0 if all went ok, an error if the conversion isn't supported)
|
|
||||||
The out buffer must have size (w * h * bpp + 7) / 8, where bpp is the bits per pixel
|
|
||||||
of the output color type (lodepng_get_bpp)
|
|
||||||
The fix_png value works as described in struct LodePNGDecoderSettings.
|
|
||||||
Note: for 16-bit per channel colors, uses big endian format like PNG does.
|
|
||||||
*/
|
|
||||||
unsigned lodepng_convert(unsigned char *out, const unsigned char *in,
|
|
||||||
LodePNGColorMode *mode_out, const LodePNGColorMode *mode_in,
|
|
||||||
unsigned w, unsigned h, unsigned fix_png);
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
/*
|
|
||||||
Settings for the decoder. This contains settings for the PNG and the Zlib
|
|
||||||
decoder, but not the Info settings from the Info structs.
|
|
||||||
*/
|
|
||||||
typedef struct LodePNGDecoderSettings
|
|
||||||
{
|
|
||||||
LodePNGDecompressSettings zlibsettings; /*in here is the setting to ignore Adler32 checksums*/
|
|
||||||
|
|
||||||
unsigned ignore_crc; /*ignore CRC checksums*/
|
|
||||||
/*
|
|
||||||
The fix_png setting, if 1, makes the decoder tolerant towards some PNG images
|
|
||||||
that do not correctly follow the PNG specification. This only supports errors
|
|
||||||
that are fixable, were found in images that are actually used on the web, and
|
|
||||||
are silently tolerated by other decoders as well. Currently only one such fix
|
|
||||||
is implemented: if a palette index is out of bounds given the palette size,
|
|
||||||
interpret it as opaque black.
|
|
||||||
By default this value is 0, which makes it stop with an error on such images.
|
|
||||||
*/
|
|
||||||
unsigned fix_png;
|
|
||||||
unsigned color_convert; /*whether to convert the PNG to the color type you want. Default: yes*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
|
|
||||||
unsigned read_text_chunks; /*if false but remember_unknown_chunks is true, they're stored in the unknown chunks*/
|
|
||||||
/*store all bytes from unknown chunks in the LodePNGInfo (off by default, useful for a png editor)*/
|
|
||||||
unsigned remember_unknown_chunks;
|
|
||||||
#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
|
|
||||||
} LodePNGDecoderSettings;
|
|
||||||
|
|
||||||
void lodepng_decoder_settings_init(LodePNGDecoderSettings *settings);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_DECODER*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
/*automatically use color type with less bits per pixel if losslessly possible. Default: AUTO*/
|
|
||||||
typedef enum LodePNGFilterStrategy
|
|
||||||
{
|
|
||||||
/*every filter at zero*/
|
|
||||||
LFS_ZERO,
|
|
||||||
/*Use filter that gives minumum sum, as described in the official PNG filter heuristic.*/
|
|
||||||
LFS_MINSUM,
|
|
||||||
/*Use the filter type that gives smallest Shannon entropy for this scanline. Depending
|
|
||||||
on the image, this is better or worse than minsum.*/
|
|
||||||
LFS_ENTROPY,
|
|
||||||
/*
|
|
||||||
Brute-force-search PNG filters by compressing each filter for each scanline.
|
|
||||||
Experimental, very slow, and only rarely gives better compression than MINSUM.
|
|
||||||
*/
|
|
||||||
LFS_BRUTE_FORCE,
|
|
||||||
/*use predefined_filters buffer: you specify the filter type for each scanline*/
|
|
||||||
LFS_PREDEFINED
|
|
||||||
} LodePNGFilterStrategy;
|
|
||||||
|
|
||||||
/*automatically use color type with less bits per pixel if losslessly possible. Default: LAC_AUTO*/
|
|
||||||
typedef enum LodePNGAutoConvert
|
|
||||||
{
|
|
||||||
LAC_NO, /*use color type user requested*/
|
|
||||||
LAC_ALPHA, /*use color type user requested, but if only opaque pixels and RGBA or grey+alpha, use RGB or grey*/
|
|
||||||
LAC_AUTO, /*use PNG color type that can losslessly represent the uncompressed image the smallest possible*/
|
|
||||||
/*
|
|
||||||
like AUTO, but do not choose 1, 2 or 4 bit per pixel types.
|
|
||||||
sometimes a PNG image compresses worse if less than 8 bits per pixels.
|
|
||||||
*/
|
|
||||||
LAC_AUTO_NO_NIBBLES,
|
|
||||||
/*
|
|
||||||
like AUTO, but never choose palette color type. For small images, encoding
|
|
||||||
the palette may take more bytes than what is gained. Note that AUTO also
|
|
||||||
already prevents encoding the palette for extremely small images, but that may
|
|
||||||
not be sufficient because due to the compression it cannot predict when to
|
|
||||||
switch.
|
|
||||||
*/
|
|
||||||
LAC_AUTO_NO_PALETTE,
|
|
||||||
LAC_AUTO_NO_NIBBLES_NO_PALETTE
|
|
||||||
} LodePNGAutoConvert;
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
Automatically chooses color type that gives smallest amount of bits in the
|
|
||||||
output image, e.g. grey if there are only greyscale pixels, palette if there
|
|
||||||
are less than 256 colors, ...
|
|
||||||
The auto_convert parameter allows limiting it to not use palette, ...
|
|
||||||
*/
|
|
||||||
unsigned lodepng_auto_choose_color(LodePNGColorMode *mode_out,
|
|
||||||
const unsigned char *image, unsigned w, unsigned h,
|
|
||||||
const LodePNGColorMode *mode_in,
|
|
||||||
LodePNGAutoConvert auto_convert);
|
|
||||||
|
|
||||||
/*Settings for the encoder.*/
|
|
||||||
typedef struct LodePNGEncoderSettings
|
|
||||||
{
|
|
||||||
LodePNGCompressSettings zlibsettings; /*settings for the zlib encoder, such as window size, ...*/
|
|
||||||
|
|
||||||
LodePNGAutoConvert auto_convert; /*how to automatically choose output PNG color type, if at all*/
|
|
||||||
|
|
||||||
/*If true, follows the official PNG heuristic: if the PNG uses a palette or lower than
|
|
||||||
8 bit depth, set all filters to zero. Otherwise use the filter_strategy. Note that to
|
|
||||||
completely follow the official PNG heuristic, filter_palette_zero must be true and
|
|
||||||
filter_strategy must be LFS_MINSUM*/
|
|
||||||
unsigned filter_palette_zero;
|
|
||||||
/*Which filter strategy to use when not using zeroes due to filter_palette_zero.
|
|
||||||
Set filter_palette_zero to 0 to ensure always using your chosen strategy. Default: LFS_MINSUM*/
|
|
||||||
LodePNGFilterStrategy filter_strategy;
|
|
||||||
/*used if filter_strategy is LFS_PREDEFINED. In that case, this must point to a buffer with
|
|
||||||
the same length as the amount of scanlines in the image, and each value must <= 5. You
|
|
||||||
have to cleanup this buffer, LodePNG will never free it. Don't forget that filter_palette_zero
|
|
||||||
must be set to 0 to ensure this is also used on palette or low bitdepth images.*/
|
|
||||||
const unsigned char *predefined_filters;
|
|
||||||
|
|
||||||
/*force creating a PLTE chunk if colortype is 2 or 6 (= a suggested palette).
|
|
||||||
If colortype is 3, PLTE is _always_ created.*/
|
|
||||||
unsigned force_palette;
|
|
||||||
#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
|
|
||||||
/*add LodePNG identifier and version as a text chunk, for debugging*/
|
|
||||||
unsigned add_id;
|
|
||||||
/*encode text chunks as zTXt chunks instead of tEXt chunks, and use compression in iTXt chunks*/
|
|
||||||
unsigned text_compression;
|
|
||||||
#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
|
|
||||||
} LodePNGEncoderSettings;
|
|
||||||
|
|
||||||
void lodepng_encoder_settings_init(LodePNGEncoderSettings *settings);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_ENCODER*/
|
|
||||||
|
|
||||||
|
|
||||||
#if defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER)
|
|
||||||
/*The settings, state and information for extended encoding and decoding.*/
|
|
||||||
typedef struct LodePNGState
|
|
||||||
{
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
LodePNGDecoderSettings decoder; /*the decoding settings*/
|
|
||||||
#endif /*LODEPNG_COMPILE_DECODER*/
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
LodePNGEncoderSettings encoder; /*the encoding settings*/
|
|
||||||
#endif /*LODEPNG_COMPILE_ENCODER*/
|
|
||||||
LodePNGColorMode info_raw; /*specifies the format in which you would like to get the raw pixel buffer*/
|
|
||||||
LodePNGInfo info_png; /*info of the PNG image obtained after decoding*/
|
|
||||||
unsigned error;
|
|
||||||
#ifdef LODEPNG_COMPILE_CPP
|
|
||||||
//For the lodepng::State subclass.
|
|
||||||
virtual ~LodePNGState(){}
|
|
||||||
#endif
|
|
||||||
} LodePNGState;
|
|
||||||
|
|
||||||
/*init, cleanup and copy functions to use with this struct*/
|
|
||||||
void lodepng_state_init(LodePNGState *state);
|
|
||||||
|
|
||||||
void lodepng_state_cleanup(LodePNGState *state);
|
|
||||||
|
|
||||||
void lodepng_state_copy(LodePNGState *dest, const LodePNGState *source);
|
|
||||||
|
|
||||||
#endif /* defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) */
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
|
|
||||||
/*
|
|
||||||
Same as lodepng_decode_memory, but uses a LodePNGState to allow custom settings and
|
|
||||||
getting much more information about the PNG image and color mode.
|
|
||||||
*/
|
|
||||||
unsigned lodepng_decode(unsigned char **out, unsigned *w, unsigned *h,
|
|
||||||
LodePNGState *state,
|
|
||||||
const unsigned char *in, size_t insize);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Read the PNG header, but not the actual data. This returns only the information
|
|
||||||
that is in the header chunk of the PNG, such as width, height and color type. The
|
|
||||||
information is placed in the info_png field of the LodePNGState.
|
|
||||||
*/
|
|
||||||
unsigned lodepng_inspect(unsigned *w, unsigned *h,
|
|
||||||
LodePNGState *state,
|
|
||||||
const unsigned char *in, size_t insize);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_DECODER*/
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
|
|
||||||
/*This function allocates the out buffer with standard malloc and stores the size in *outsize.*/
|
|
||||||
unsigned lodepng_encode(unsigned char **out, size_t *outsize,
|
|
||||||
const unsigned char *image, unsigned w, unsigned h,
|
|
||||||
LodePNGState *state);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_ENCODER*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
The lodepng_chunk functions are normally not needed, except to traverse the
|
|
||||||
unknown chunks stored in the LodePNGInfo struct, or add new ones to it.
|
|
||||||
It also allows traversing the chunks of an encoded PNG file yourself.
|
|
||||||
|
|
||||||
PNG standard chunk naming conventions:
|
|
||||||
First byte: uppercase = critical, lowercase = ancillary
|
|
||||||
Second byte: uppercase = public, lowercase = private
|
|
||||||
Third byte: must be uppercase
|
|
||||||
Fourth byte: uppercase = unsafe to copy, lowercase = safe to copy
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*get the length of the data of the chunk. Total chunk length has 12 bytes more.*/
|
|
||||||
unsigned lodepng_chunk_length(const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*puts the 4-byte type in null terminated string*/
|
|
||||||
void lodepng_chunk_type(char type[5], const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*check if the type is the given type*/
|
|
||||||
unsigned char lodepng_chunk_type_equals(const unsigned char *chunk, const char *type);
|
|
||||||
|
|
||||||
/*0: it's one of the critical chunk types, 1: it's an ancillary chunk (see PNG standard)*/
|
|
||||||
unsigned char lodepng_chunk_ancillary(const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*0: public, 1: private (see PNG standard)*/
|
|
||||||
unsigned char lodepng_chunk_private(const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*0: the chunk is unsafe to copy, 1: the chunk is safe to copy (see PNG standard)*/
|
|
||||||
unsigned char lodepng_chunk_safetocopy(const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*get pointer to the data of the chunk, where the input points to the header of the chunk*/
|
|
||||||
unsigned char *lodepng_chunk_data(unsigned char *chunk);
|
|
||||||
|
|
||||||
const unsigned char *lodepng_chunk_data_const(const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*returns 0 if the crc is correct, 1 if it's incorrect (0 for OK as usual!)*/
|
|
||||||
unsigned lodepng_chunk_check_crc(const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*generates the correct CRC from the data and puts it in the last 4 bytes of the chunk*/
|
|
||||||
void lodepng_chunk_generate_crc(unsigned char *chunk);
|
|
||||||
|
|
||||||
/*iterate to next chunks. don't use on IEND chunk, as there is no next chunk then*/
|
|
||||||
unsigned char *lodepng_chunk_next(unsigned char *chunk);
|
|
||||||
|
|
||||||
const unsigned char *lodepng_chunk_next_const(const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Appends chunk to the data in out. The given chunk should already have its chunk header.
|
|
||||||
The out variable and outlength are updated to reflect the new reallocated buffer.
|
|
||||||
Returns error code (0 if it went ok)
|
|
||||||
*/
|
|
||||||
unsigned lodepng_chunk_append(unsigned char **out, size_t *outlength, const unsigned char *chunk);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Appends new chunk to out. The chunk to append is given by giving its length, type
|
|
||||||
and data separately. The type is a 4-letter string.
|
|
||||||
The out variable and outlength are updated to reflect the new reallocated buffer.
|
|
||||||
Returne error code (0 if it went ok)
|
|
||||||
*/
|
|
||||||
unsigned lodepng_chunk_create(unsigned char **out, size_t *outlength, unsigned length,
|
|
||||||
const char *type, const unsigned char *data);
|
|
||||||
|
|
||||||
|
|
||||||
/*Calculate CRC32 of buffer*/
|
|
||||||
unsigned lodepng_crc32(const unsigned char *buf, size_t len);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_PNG*/
|
|
||||||
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ZLIB
|
|
||||||
/*
|
|
||||||
This zlib part can be used independently to zlib compress and decompress a
|
|
||||||
buffer. It cannot be used to create gzip files however, and it only supports the
|
|
||||||
part of zlib that is required for PNG, it does not support dictionaries.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
|
|
||||||
/*Inflate a buffer. Inflate is the decompression step of deflate. Out buffer must be freed after use.*/
|
|
||||||
unsigned lodepng_inflate(unsigned char **out, size_t *outsize,
|
|
||||||
const unsigned char *in, size_t insize,
|
|
||||||
const LodePNGDecompressSettings *settings);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Decompresses Zlib data. Reallocates the out buffer and appends the data. The
|
|
||||||
data must be according to the zlib specification.
|
|
||||||
Either, *out must be NULL and *outsize must be 0, or, *out must be a valid
|
|
||||||
buffer and *outsize its size in bytes. out must be freed by user after usage.
|
|
||||||
*/
|
|
||||||
unsigned lodepng_zlib_decompress(unsigned char **out, size_t *outsize,
|
|
||||||
const unsigned char *in, size_t insize,
|
|
||||||
const LodePNGDecompressSettings *settings);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_DECODER*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
|
|
||||||
/*
|
|
||||||
Compresses data with Zlib. Reallocates the out buffer and appends the data.
|
|
||||||
Zlib adds a small header and trailer around the deflate data.
|
|
||||||
The data is output in the format of the zlib specification.
|
|
||||||
Either, *out must be NULL and *outsize must be 0, or, *out must be a valid
|
|
||||||
buffer and *outsize its size in bytes. out must be freed by user after usage.
|
|
||||||
*/
|
|
||||||
unsigned lodepng_zlib_compress(unsigned char **out, size_t *outsize,
|
|
||||||
const unsigned char *in, size_t insize,
|
|
||||||
const LodePNGCompressSettings *settings);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Find length-limited Huffman code for given frequencies. This function is in the
|
|
||||||
public interface only for tests, it's used internally by lodepng_deflate.
|
|
||||||
*/
|
|
||||||
unsigned lodepng_huffman_code_lengths(unsigned *lengths, const unsigned *frequencies,
|
|
||||||
size_t numcodes, unsigned maxbitlen);
|
|
||||||
|
|
||||||
/*Compress a buffer with deflate. See RFC 1951. Out buffer must be freed after use.*/
|
|
||||||
unsigned lodepng_deflate(unsigned char **out, size_t *outsize,
|
|
||||||
const unsigned char *in, size_t insize,
|
|
||||||
const LodePNGCompressSettings *settings);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_ENCODER*/
|
|
||||||
#endif /*LODEPNG_COMPILE_ZLIB*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DISK
|
|
||||||
|
|
||||||
/*
|
|
||||||
Load a file from disk into buffer. The function allocates the out buffer, and
|
|
||||||
after usage you should free it.
|
|
||||||
out: output parameter, contains pointer to loaded buffer.
|
|
||||||
outsize: output parameter, size of the allocated out buffer
|
|
||||||
filename: the path to the file to load
|
|
||||||
return value: error code (0 means ok)
|
|
||||||
*/
|
|
||||||
unsigned lodepng_load_file(unsigned char **out, size_t *outsize, const char *filename);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Save a file from buffer to disk. Warning, if it exists, this function overwrites
|
|
||||||
the file without warning!
|
|
||||||
buffer: the buffer to write
|
|
||||||
buffersize: size of the buffer to write
|
|
||||||
filename: the path to the file to save to
|
|
||||||
return value: error code (0 means ok)
|
|
||||||
*/
|
|
||||||
unsigned lodepng_save_file(const unsigned char *buffer, size_t buffersize, const char *filename);
|
|
||||||
|
|
||||||
#endif /*LODEPNG_COMPILE_DISK*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_CPP
|
|
||||||
//The LodePNG C++ wrapper uses std::vectors instead of manually allocated memory buffers.
|
|
||||||
namespace lodepng
|
|
||||||
{
|
|
||||||
#ifdef LODEPNG_COMPILE_PNG
|
|
||||||
class State : public LodePNGState
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
State();
|
|
||||||
State(const State& other);
|
|
||||||
virtual ~State();
|
|
||||||
State& operator=(const State& other);
|
|
||||||
};
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
//Same as other lodepng::decode, but using a State for more settings and information.
|
|
||||||
unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
|
|
||||||
State& state,
|
|
||||||
const unsigned char* in, size_t insize);
|
|
||||||
unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
|
|
||||||
State& state,
|
|
||||||
const std::vector<unsigned char>& in);
|
|
||||||
#endif /*LODEPNG_COMPILE_DECODER*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
//Same as other lodepng::encode, but using a State for more settings and information.
|
|
||||||
unsigned encode(std::vector<unsigned char>& out,
|
|
||||||
const unsigned char* in, unsigned w, unsigned h,
|
|
||||||
State& state);
|
|
||||||
unsigned encode(std::vector<unsigned char>& out,
|
|
||||||
const std::vector<unsigned char>& in, unsigned w, unsigned h,
|
|
||||||
State& state);
|
|
||||||
#endif /*LODEPNG_COMPILE_ENCODER*/
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_DISK
|
|
||||||
/*
|
|
||||||
Load a file from disk into an std::vector. If the vector is empty, then either
|
|
||||||
the file doesn't exist or is an empty file.
|
|
||||||
*/
|
|
||||||
void load_file(std::vector<unsigned char>& buffer, const std::string& filename);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Save the binary data in an std::vector to a file on disk. The file is overwritten
|
|
||||||
without warning.
|
|
||||||
*/
|
|
||||||
void save_file(const std::vector<unsigned char>& buffer, const std::string& filename);
|
|
||||||
#endif //LODEPNG_COMPILE_DISK
|
|
||||||
#endif //LODEPNG_COMPILE_PNG
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ZLIB
|
|
||||||
#ifdef LODEPNG_COMPILE_DECODER
|
|
||||||
//Zlib-decompress an unsigned char buffer
|
|
||||||
unsigned decompress(std::vector<unsigned char>& out, const unsigned char* in, size_t insize,
|
|
||||||
const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings);
|
|
||||||
|
|
||||||
//Zlib-decompress an std::vector
|
|
||||||
unsigned decompress(std::vector<unsigned char>& out, const std::vector<unsigned char>& in,
|
|
||||||
const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings);
|
|
||||||
#endif //LODEPNG_COMPILE_DECODER
|
|
||||||
|
|
||||||
#ifdef LODEPNG_COMPILE_ENCODER
|
|
||||||
//Zlib-compress an unsigned char buffer
|
|
||||||
unsigned compress(std::vector<unsigned char>& out, const unsigned char* in, size_t insize,
|
|
||||||
const LodePNGCompressSettings& settings = lodepng_default_compress_settings);
|
|
||||||
|
|
||||||
//Zlib-compress an std::vector
|
|
||||||
unsigned compress(std::vector<unsigned char>& out, const std::vector<unsigned char>& in,
|
|
||||||
const LodePNGCompressSettings& settings = lodepng_default_compress_settings);
|
|
||||||
#endif //LODEPNG_COMPILE_ENCODER
|
|
||||||
#endif //LODEPNG_COMPILE_ZLIB
|
|
||||||
} //namespace lodepng
|
|
||||||
#endif /*LODEPNG_COMPILE_CPP*/
|
|
||||||
|
|
||||||
#endif /*LODEPNG_H inclusion guard*/
|
|
||||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
|
|
@ -1,9 +0,0 @@
|
||||||
if (NOT WIN32)
|
|
||||||
set(CMAKE_C_FLAGS "--std=gnu99 -fPIC -Wno-nullability-completeness ${CMAKE_C_FLAGS}")
|
|
||||||
else ()
|
|
||||||
set(CMAKE_C_FLAGS "--std=gnu99 ${CMAKE_C_FLAGS}")
|
|
||||||
endif ()
|
|
||||||
|
|
||||||
add_executable(caesiumd main.c)
|
|
||||||
|
|
||||||
target_link_libraries(caesiumd LINK_PUBLIC caesium)
|
|
||||||
24
demo/main.c
24
demo/main.c
|
|
@ -1,24 +0,0 @@
|
||||||
#include <stdio.h>
|
|
||||||
#include <stdlib.h>
|
|
||||||
#include <string.h>
|
|
||||||
#include "../caesium/caesium.h"
|
|
||||||
#include "config.h"
|
|
||||||
|
|
||||||
int main(int argc, char *argv[])
|
|
||||||
{
|
|
||||||
if (argc == 2 && strcmp(argv[1], "-v") == 0) {
|
|
||||||
fprintf(stdout, "%d.%d.%d\n", VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH);
|
|
||||||
exit(EXIT_SUCCESS);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (argc != 3) {
|
|
||||||
fprintf(stderr, "Wrong arguments.\nExiting.\n");
|
|
||||||
exit(EXIT_FAILURE);
|
|
||||||
}
|
|
||||||
|
|
||||||
cs_image_pars options = initialize_parameters();
|
|
||||||
int error_code = 0;
|
|
||||||
cs_compress(argv[1], argv[2], &options, &error_code);
|
|
||||||
|
|
||||||
exit(error_code);
|
|
||||||
}
|
|
||||||
29
install.sh
29
install.sh
|
|
@ -1,29 +0,0 @@
|
||||||
#!/bin/bash
|
|
||||||
|
|
||||||
SOURCE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
|
|
||||||
|
|
||||||
rm -rf ./mozjpeg
|
|
||||||
rm -rf ./zopfli
|
|
||||||
|
|
||||||
#mozjpeg
|
|
||||||
git clone https://github.com/mozilla/mozjpeg.git
|
|
||||||
cd mozjpeg/ || exit
|
|
||||||
git checkout 426de82d0c081c996c23b75fed05833b6627b590
|
|
||||||
mkdir build && cd build || exit
|
|
||||||
cmake -G"Unix Makefiles" ..
|
|
||||||
make && sudo make install
|
|
||||||
|
|
||||||
cd "${SOURCE}" || exit
|
|
||||||
|
|
||||||
#zopflipng
|
|
||||||
git clone --branch 'zopfli-1.0.3' --depth 1 https://github.com/google/zopfli.git
|
|
||||||
cd zopfli || exit
|
|
||||||
mkdir build && cd build || exit
|
|
||||||
if [[ "$OSTYPE" == "linux-gnu" ]]; then
|
|
||||||
cmake -D"ZOPFLI_BUILD_SHARED=ON" -D"CMAKE_INSTALL_BINDIR=/usr/bin" -D"CMAKE_INSTALL_LIBDIR=/usr/lib" -D"CMAKE_INSTALL_INCLUDEDIR=/usr/include" ..
|
|
||||||
else
|
|
||||||
cmake -D"ZOPFLI_BUILD_SHARED=ON" ..
|
|
||||||
fi
|
|
||||||
make libzopflipng && sudo make install
|
|
||||||
|
|
||||||
cd "${SOURCE}" || exit
|
|
||||||
|
|
@ -0,0 +1,37 @@
|
||||||
|
use std::ffi::CString;
|
||||||
|
use std::io;
|
||||||
|
use std::os::raw::{c_int, c_void};
|
||||||
|
use crate::CSParameters;
|
||||||
|
|
||||||
|
pub struct Parameters {
|
||||||
|
pub quality: u32,
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn compress(input_path: String, output_path: String, parameters: CSParameters) -> Result<(), io::Error>
|
||||||
|
{
|
||||||
|
unsafe {
|
||||||
|
let input_file = libc::fopen(CString::new(input_path)?.as_ptr(), CString::new("r")?.as_ptr());
|
||||||
|
let output_file = libc::fopen(CString::new(output_path)?.as_ptr(), CString::new("w+")?.as_ptr());
|
||||||
|
let input_stream = gifsicle::Gif_ReadFile(input_file);
|
||||||
|
libc::fclose(input_file);
|
||||||
|
|
||||||
|
let padding: [*mut c_void; 7] = [std::ptr::null_mut(); 7];
|
||||||
|
let mut loss = 0;
|
||||||
|
if !parameters.optimize {
|
||||||
|
loss = (100 - parameters.gif.quality) as c_int
|
||||||
|
}
|
||||||
|
|
||||||
|
let gc_info = gifsicle::Gif_CompressInfo {
|
||||||
|
flags: 0,
|
||||||
|
loss,
|
||||||
|
padding,
|
||||||
|
};
|
||||||
|
let write_result = gifsicle::Gif_FullWriteFile(input_stream, &gc_info, output_file);
|
||||||
|
libc::fclose(output_file);
|
||||||
|
|
||||||
|
match write_result {
|
||||||
|
1 => Ok(()),
|
||||||
|
_ => Err(io::Error::new(io::ErrorKind::Other, "GIF compression failed!"))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,133 @@
|
||||||
|
use mozjpeg::{Decompress, Compress, ALL_MARKERS, NO_MARKERS};
|
||||||
|
use std::fs::File;
|
||||||
|
use std::io::Write;
|
||||||
|
use std::{io, mem};
|
||||||
|
use mozjpeg_sys as mjs;
|
||||||
|
use crate::CSParameters;
|
||||||
|
use std::fs;
|
||||||
|
|
||||||
|
pub struct Parameters {
|
||||||
|
pub quality: u32,
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn compress(input_path: String, output_path: String, parameters: CSParameters) -> Result<(), io::Error>
|
||||||
|
{
|
||||||
|
return if parameters.optimize {
|
||||||
|
unsafe {
|
||||||
|
lossless(input_path, output_path, parameters)
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
lossy(input_path, output_path, parameters)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
unsafe fn lossless(input_path: String, output_path: String, parameters: CSParameters) -> Result<(), io::Error>
|
||||||
|
{
|
||||||
|
let mut src_info: mjs::jpeg_decompress_struct = mem::zeroed();
|
||||||
|
let mut src_err = mem::zeroed();
|
||||||
|
let mut dst_info: mjs::jpeg_compress_struct = mem::zeroed();
|
||||||
|
let mut dst_err = mem::zeroed();
|
||||||
|
|
||||||
|
src_info.common.err = mjs::jpeg_std_error(&mut src_err);
|
||||||
|
dst_info.common.err = mjs::jpeg_std_error(&mut dst_err);
|
||||||
|
|
||||||
|
mjs::jpeg_create_decompress(&mut src_info);
|
||||||
|
mjs::jpeg_create_compress(&mut dst_info);
|
||||||
|
|
||||||
|
let in_file = fs::read(input_path)?;
|
||||||
|
mjs::jpeg_mem_src(&mut src_info, in_file.as_ptr(), in_file.len() as _);
|
||||||
|
|
||||||
|
if parameters.keep_metadata {
|
||||||
|
mjs::jpeg_save_markers(&mut src_info, 0xFE, 0xFFFF);
|
||||||
|
for m in 0..16 {
|
||||||
|
mjs::jpeg_save_markers(&mut src_info, 0xE0 + m, 0xFFFF);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
mjs::jpeg_read_header(&mut src_info, i32::from(true));
|
||||||
|
let src_coef_arrays = mjs::jpeg_read_coefficients(&mut src_info);
|
||||||
|
mjs::jpeg_copy_critical_parameters(&src_info, &mut dst_info);
|
||||||
|
let dst_coef_arrays = src_coef_arrays;
|
||||||
|
|
||||||
|
dst_info.optimize_coding = i32::from(true);
|
||||||
|
let mut buf = std::ptr::null_mut();
|
||||||
|
let mut buf_size = 0;
|
||||||
|
mjs::jpeg_mem_dest(&mut dst_info, &mut buf, &mut buf_size);
|
||||||
|
mjs::jpeg_write_coefficients(&mut dst_info, dst_coef_arrays);
|
||||||
|
|
||||||
|
if parameters.keep_metadata {
|
||||||
|
let mut marker = src_info.marker_list;
|
||||||
|
|
||||||
|
while !marker.is_null() {
|
||||||
|
mjs::jpeg_write_marker(&mut dst_info, (*marker).marker as i32, (*marker).data, (*marker).data_length);
|
||||||
|
marker = (*marker).next;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
mjs::jpeg_finish_compress(&mut dst_info);
|
||||||
|
mjs::jpeg_destroy_compress(&mut dst_info);
|
||||||
|
mjs::jpeg_finish_decompress(&mut src_info);
|
||||||
|
mjs::jpeg_destroy_decompress(&mut src_info);
|
||||||
|
|
||||||
|
let mut output_file_buffer = File::create(output_path)?;
|
||||||
|
output_file_buffer.write_all(std::slice::from_raw_parts(buf, buf_size as usize))?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
fn lossy(input_path: String, output_path: String, parameters: CSParameters) -> Result<(), io::Error> {
|
||||||
|
let markers_option = if parameters.keep_metadata { ALL_MARKERS } else { NO_MARKERS };
|
||||||
|
let data = std::fs::read(input_path).unwrap();
|
||||||
|
let mem_data = &data[..data.len()];
|
||||||
|
let decompress = Decompress::with_markers(markers_option).from_mem(mem_data)?;
|
||||||
|
let samp_factors = decompress.components()
|
||||||
|
.iter()
|
||||||
|
.map(|c| c.v_samp_factor)
|
||||||
|
.collect::<Vec<_>>();
|
||||||
|
|
||||||
|
let markers = decompress.markers();
|
||||||
|
|
||||||
|
let color_space = decompress.color_space();
|
||||||
|
let width = decompress.width();
|
||||||
|
let height = decompress.height();
|
||||||
|
|
||||||
|
let mut c_info = Compress::new(color_space);
|
||||||
|
c_info.set_size(width, height);
|
||||||
|
|
||||||
|
c_info.set_raw_data_in(true);
|
||||||
|
c_info.set_quality(parameters.jpeg.quality as f32);
|
||||||
|
c_info.set_progressive_mode();
|
||||||
|
c_info.set_optimize_coding(true);
|
||||||
|
c_info.set_optimize_scans(true);
|
||||||
|
c_info.set_mem_dest();
|
||||||
|
|
||||||
|
for (c, samp) in c_info.components_mut().iter_mut().zip(samp_factors) {
|
||||||
|
c.v_samp_factor = samp;
|
||||||
|
c.h_samp_factor = samp;
|
||||||
|
}
|
||||||
|
|
||||||
|
c_info.start_compress();
|
||||||
|
|
||||||
|
if parameters.keep_metadata {
|
||||||
|
markers.for_each(|marker| {
|
||||||
|
c_info.write_marker(marker.marker, marker.data);
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
let mut bitmaps = [&mut Vec::new(), &mut Vec::new(), &mut Vec::new()];
|
||||||
|
let mut d_info = decompress.raw()?;
|
||||||
|
d_info.read_raw_data(&mut bitmaps);
|
||||||
|
d_info.finish_decompress();
|
||||||
|
|
||||||
|
c_info.write_raw_data(&bitmaps.iter().map(|c| &c[..]).collect::<Vec<_>>());
|
||||||
|
|
||||||
|
|
||||||
|
c_info.finish_compress();
|
||||||
|
|
||||||
|
//data_to_vec does not return an error
|
||||||
|
let data = c_info.data_to_vec().unwrap();
|
||||||
|
|
||||||
|
let mut file = File::create(output_path)?;
|
||||||
|
file.write_all(&data)?;
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,119 @@
|
||||||
|
mod utils;
|
||||||
|
mod jpeg;
|
||||||
|
mod png;
|
||||||
|
mod gif;
|
||||||
|
mod webp;
|
||||||
|
|
||||||
|
use std::error::Error;
|
||||||
|
use crate::utils::get_filetype;
|
||||||
|
use std::ffi::CStr;
|
||||||
|
use std::os::raw::c_char;
|
||||||
|
|
||||||
|
#[repr(C)]
|
||||||
|
pub struct C_CSParameters {
|
||||||
|
pub keep_metadata: bool,
|
||||||
|
pub jpeg_quality: u32,
|
||||||
|
pub png_level: u32,
|
||||||
|
pub png_force_zopfli: bool,
|
||||||
|
pub gif_quality: u32,
|
||||||
|
pub webp_quality: u32,
|
||||||
|
pub optimize: bool,
|
||||||
|
}
|
||||||
|
|
||||||
|
pub struct CSParameters {
|
||||||
|
pub jpeg: jpeg::Parameters,
|
||||||
|
pub png: png::Parameters,
|
||||||
|
pub gif: gif::Parameters,
|
||||||
|
pub webp: webp::Parameters,
|
||||||
|
pub keep_metadata: bool,
|
||||||
|
pub optimize: bool,
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn initialize_parameters() -> CSParameters
|
||||||
|
{
|
||||||
|
let jpeg = jpeg::Parameters {
|
||||||
|
quality: 80
|
||||||
|
};
|
||||||
|
|
||||||
|
let png = png::Parameters {
|
||||||
|
oxipng: oxipng::Options::default(),
|
||||||
|
level: 3,
|
||||||
|
force_zopfli: false,
|
||||||
|
};
|
||||||
|
|
||||||
|
let gif = gif::Parameters {
|
||||||
|
quality: 80
|
||||||
|
};
|
||||||
|
|
||||||
|
let webp = webp::Parameters {
|
||||||
|
quality: 80
|
||||||
|
};
|
||||||
|
|
||||||
|
CSParameters {
|
||||||
|
jpeg,
|
||||||
|
png,
|
||||||
|
gif,
|
||||||
|
webp,
|
||||||
|
keep_metadata: false,
|
||||||
|
optimize: false,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[no_mangle]
|
||||||
|
pub extern fn c_compress(input_path: *const c_char, output_path: *const c_char, params: C_CSParameters) -> bool {
|
||||||
|
unsafe {
|
||||||
|
let mut parameters = initialize_parameters();
|
||||||
|
parameters.jpeg.quality = params.jpeg_quality;
|
||||||
|
parameters.png.level = params.png_level - 1;
|
||||||
|
parameters.optimize = params.optimize;
|
||||||
|
parameters.keep_metadata = params.keep_metadata;
|
||||||
|
parameters.png.force_zopfli = params.png_force_zopfli;
|
||||||
|
parameters.gif.quality = params.gif_quality;
|
||||||
|
parameters.webp.quality = params.webp_quality;
|
||||||
|
|
||||||
|
compress(CStr::from_ptr(input_path).to_str().unwrap().to_string(),
|
||||||
|
CStr::from_ptr(output_path).to_str().unwrap().to_string(),
|
||||||
|
parameters)
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
true
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn compress(input_path: String, output_path: String, parameters: CSParameters) -> Result<(), Box<dyn Error>> {
|
||||||
|
let file_type = get_filetype(&input_path);
|
||||||
|
if parameters.jpeg.quality == 0 || parameters.jpeg.quality > 100 {
|
||||||
|
return Err("Invalid JPEG quality value".into());
|
||||||
|
}
|
||||||
|
|
||||||
|
if parameters.png.level > 6 {
|
||||||
|
return Err("Invalid PNG quality value".into());
|
||||||
|
}
|
||||||
|
|
||||||
|
if parameters.gif.quality > 100 {
|
||||||
|
return Err("Invalid GIF quality value".into());
|
||||||
|
}
|
||||||
|
|
||||||
|
if parameters.webp.quality > 100 {
|
||||||
|
return Err("Invalid WebP quality value".into());
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
match file_type {
|
||||||
|
utils::SupportedFileTypes::Jpeg => {
|
||||||
|
jpeg::compress(input_path, output_path, parameters)?;
|
||||||
|
}
|
||||||
|
utils::SupportedFileTypes::Png => {
|
||||||
|
png::compress(input_path, output_path, parameters)?;
|
||||||
|
}
|
||||||
|
utils::SupportedFileTypes::Gif => {
|
||||||
|
gif::compress(input_path, output_path, parameters)?;
|
||||||
|
}
|
||||||
|
utils::SupportedFileTypes::WebP => {
|
||||||
|
webp::compress(input_path, output_path, parameters)?;
|
||||||
|
}
|
||||||
|
_ => return Err("Unknown file type".into())
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,30 @@
|
||||||
|
use std::path::PathBuf;
|
||||||
|
use oxipng::{PngError};
|
||||||
|
use crate::CSParameters;
|
||||||
|
|
||||||
|
pub struct Parameters {
|
||||||
|
pub oxipng: oxipng::Options,
|
||||||
|
pub level: u32,
|
||||||
|
pub force_zopfli: bool
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn compress(input_path: String, output_path: String, parameters: CSParameters) -> Result<(), PngError> {
|
||||||
|
let in_file = oxipng::InFile::Path(PathBuf::from(input_path));
|
||||||
|
let out_file = oxipng::OutFile::Path(Some(PathBuf::from(output_path)));
|
||||||
|
let mut oxipng_options = parameters.png.oxipng;
|
||||||
|
|
||||||
|
if !parameters.keep_metadata {
|
||||||
|
oxipng_options.strip = oxipng::Headers::Safe;
|
||||||
|
}
|
||||||
|
|
||||||
|
if parameters.optimize && parameters.png.force_zopfli {
|
||||||
|
oxipng_options.deflate = oxipng::Deflaters::Zopfli;
|
||||||
|
} else {
|
||||||
|
let mut preset = parameters.png.level - 1;
|
||||||
|
if parameters.optimize {
|
||||||
|
preset = 6;
|
||||||
|
}
|
||||||
|
oxipng_options = oxipng::Options::from_preset(preset as u8);
|
||||||
|
}
|
||||||
|
oxipng::optimize(&in_file, &out_file, &oxipng_options)
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,20 @@
|
||||||
|
pub enum SupportedFileTypes {
|
||||||
|
Jpeg,
|
||||||
|
Png,
|
||||||
|
Gif,
|
||||||
|
WebP,
|
||||||
|
Unkn,
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn get_filetype(file_path: &str) -> SupportedFileTypes {
|
||||||
|
match infer::get_from_path(file_path) {
|
||||||
|
Ok(v) => match v.unwrap().mime_type() {
|
||||||
|
"image/jpeg" => SupportedFileTypes::Jpeg,
|
||||||
|
"image/png" => SupportedFileTypes::Png,
|
||||||
|
"image/gif" => SupportedFileTypes::Gif,
|
||||||
|
"image/webp" => SupportedFileTypes::WebP,
|
||||||
|
_ => SupportedFileTypes::Unkn
|
||||||
|
},
|
||||||
|
Err(e) => panic!("{}", e)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,37 @@
|
||||||
|
use std::fs::File;
|
||||||
|
use std::io;
|
||||||
|
use std::io::{Read, Write};
|
||||||
|
use std::ops::Deref;
|
||||||
|
use webp;
|
||||||
|
use crate::CSParameters;
|
||||||
|
|
||||||
|
pub struct Parameters {
|
||||||
|
pub quality: u32,
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn compress(input_path: String, output_path: String, parameters: CSParameters) -> Result<(), io::Error>
|
||||||
|
{
|
||||||
|
let mut input_file = File::open(input_path)?;
|
||||||
|
|
||||||
|
let mut input_data = Vec::new();
|
||||||
|
input_file.read_to_end(&mut input_data)?;
|
||||||
|
let decoder = webp::Decoder::new(&input_data);
|
||||||
|
let input_webp = match decoder.decode() {
|
||||||
|
Some(img) => img,
|
||||||
|
None => return Err(io::Error::new(io::ErrorKind::Other, "WebP decode failed!"))
|
||||||
|
};
|
||||||
|
let input_image = input_webp.to_image();
|
||||||
|
|
||||||
|
let encoder = match webp::Encoder::from_image(&input_image) {
|
||||||
|
Ok(encoder) => encoder,
|
||||||
|
Err(e) => return Err(io::Error::new(io::ErrorKind::Other, e))
|
||||||
|
};
|
||||||
|
|
||||||
|
let mut output_file = File::create(output_path)?;
|
||||||
|
if parameters.optimize {
|
||||||
|
output_file.write_all(encoder.encode_lossless().deref())?;
|
||||||
|
} else {
|
||||||
|
output_file.write_all(encoder.encode(parameters.webp.quality as f32).deref())?;
|
||||||
|
}
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,88 @@
|
||||||
|
use std::sync::Once;
|
||||||
|
use std::fs;
|
||||||
|
|
||||||
|
static INIT: Once = Once::new();
|
||||||
|
|
||||||
|
pub fn initialize(file: &str) {
|
||||||
|
INIT.call_once(|| {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn cleanup(file: &str) {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// #[test]
|
||||||
|
// fn compress_20() {
|
||||||
|
// let output = "tests/samples/output/compressed_20.gif";
|
||||||
|
// initialize(output);
|
||||||
|
// let mut params = caesium::initialize_parameters();
|
||||||
|
// params.gif.level = 20;
|
||||||
|
// caesium::compress(String::from("tests/samples/uncompressed_은하.gif"),
|
||||||
|
// String::from(output),
|
||||||
|
// params)
|
||||||
|
// .unwrap();
|
||||||
|
// assert!(std::path::Path::new(output).exists());
|
||||||
|
// cleanup(output)
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// #[test]
|
||||||
|
// fn compress_50() {
|
||||||
|
// let output = "tests/samples/output/compressed_50.gif";
|
||||||
|
// initialize(output);
|
||||||
|
// let mut params = caesium::initialize_parameters();
|
||||||
|
// params.gif.level = 50;
|
||||||
|
// caesium::compress(String::from("tests/samples/uncompressed_은하.gif"),
|
||||||
|
// String::from(output),
|
||||||
|
// params)
|
||||||
|
// .unwrap();
|
||||||
|
// assert!(std::path::Path::new(output).exists());
|
||||||
|
// cleanup(output)
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// #[test]
|
||||||
|
// fn compress_80() {
|
||||||
|
// let output = "tests/samples/output/compressed_80.gif";
|
||||||
|
// initialize(output);
|
||||||
|
// let mut params = caesium::initialize_parameters();
|
||||||
|
// params.gif.level = 80;
|
||||||
|
// caesium::compress(String::from("tests/samples/uncompressed_은하.gif"),
|
||||||
|
// String::from(output),
|
||||||
|
// params)
|
||||||
|
// .unwrap();
|
||||||
|
// assert!(std::path::Path::new(output).exists());
|
||||||
|
// cleanup(output)
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// #[test]
|
||||||
|
// fn compress_100() {
|
||||||
|
// let output = "tests/samples/output/compressed_100.gif";
|
||||||
|
// initialize(output);
|
||||||
|
// let mut params = caesium::initialize_parameters();
|
||||||
|
// params.gif.level = 100;
|
||||||
|
// caesium::compress(String::from("tests/samples/uncompressed_은하.gif"),
|
||||||
|
// String::from(output),
|
||||||
|
// params)
|
||||||
|
// .unwrap();
|
||||||
|
// assert!(std::path::Path::new(output).exists());
|
||||||
|
// cleanup(output)
|
||||||
|
// }
|
||||||
|
//
|
||||||
|
// #[test]
|
||||||
|
// fn optimize_gif() {
|
||||||
|
// let output = "tests/samples/output/optimized.gif";
|
||||||
|
// initialize(output);
|
||||||
|
// let mut params = caesium::initialize_parameters();
|
||||||
|
// params.optimize = true;
|
||||||
|
// caesium::compress(String::from("tests/samples/uncompressed_은하.gif"),
|
||||||
|
// String::from(output),
|
||||||
|
// params)
|
||||||
|
// .unwrap();
|
||||||
|
// assert!(std::path::Path::new(output).exists());
|
||||||
|
// cleanup(output)
|
||||||
|
// }
|
||||||
|
|
@ -0,0 +1,103 @@
|
||||||
|
use caesium;
|
||||||
|
use imgref::{Img, ImgVec};
|
||||||
|
use std::path::Path;
|
||||||
|
use dssim::{RGBAPLU, ToRGBAPLU, Val};
|
||||||
|
use load_image::ImageData;
|
||||||
|
use std::sync::Once;
|
||||||
|
use std::fs;
|
||||||
|
|
||||||
|
static INIT: Once = Once::new();
|
||||||
|
|
||||||
|
pub fn initialize(file: &str) {
|
||||||
|
INIT.call_once(|| {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn cleanup(file: &str) {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn load<P: AsRef<Path>>(path: P) -> Result<ImgVec<RGBAPLU>, lodepng::Error> {
|
||||||
|
let img = load_image::load_image(path.as_ref(), false)?;
|
||||||
|
match img.bitmap {
|
||||||
|
ImageData::RGB8(ref bitmap) => Ok(Img::new(bitmap.to_rgbaplu(), img.width, img.height)),
|
||||||
|
ImageData::RGB16(ref bitmap) => Ok(Img::new(bitmap.to_rgbaplu(), img.width, img.height)),
|
||||||
|
ImageData::RGBA8(ref bitmap) => Ok(Img::new(bitmap.to_rgbaplu(), img.width, img.height)),
|
||||||
|
ImageData::RGBA16(ref bitmap) => Ok(Img::new(bitmap.to_rgbaplu(), img.width, img.height)),
|
||||||
|
ImageData::GRAY8(ref bitmap) => Ok(Img::new(bitmap.to_rgbaplu(), img.width, img.height)),
|
||||||
|
ImageData::GRAY16(ref bitmap) => Ok(Img::new(bitmap.to_rgbaplu(), img.width, img.height)),
|
||||||
|
ImageData::GRAYA8(ref bitmap) => Ok(Img::new(bitmap.to_rgbaplu(), img.width, img.height)),
|
||||||
|
ImageData::GRAYA16(ref bitmap) => Ok(Img::new(bitmap.to_rgbaplu(), img.width, img.height)),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn diff(compressed: &str) -> Val {
|
||||||
|
let attr = dssim::Dssim::new();
|
||||||
|
let orig = attr.create_image(&load("tests/samples/uncompressed_드림캐쳐.jpg").unwrap()).unwrap();
|
||||||
|
let comp = attr.create_image(&load(compressed).unwrap()).unwrap();
|
||||||
|
let (diff, _) = attr.compare(&orig, comp);
|
||||||
|
diff
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_100() {
|
||||||
|
let output = "tests/samples/output/compressed_100.jpg";
|
||||||
|
initialize(output);
|
||||||
|
let mut pars = caesium::initialize_parameters();
|
||||||
|
pars.jpeg.quality = 100;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.jpg"), String::from(output), pars).unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_80() {
|
||||||
|
let output = "tests/samples/output/compressed_80.jpg";
|
||||||
|
initialize(output);
|
||||||
|
let mut pars = caesium::initialize_parameters();
|
||||||
|
pars.jpeg.quality = 80;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.jpg"), String::from(output), pars).unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_50() {
|
||||||
|
let output = "tests/samples/output/compressed_50.jpg";
|
||||||
|
initialize(output);
|
||||||
|
let mut pars = caesium::initialize_parameters();
|
||||||
|
pars.jpeg.quality = 50;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.jpg"), String::from(output), pars).unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_10() {
|
||||||
|
let output = "tests/samples/output/compressed_10_드림캐쳐.jpg";
|
||||||
|
initialize(output);
|
||||||
|
let mut pars = caesium::initialize_parameters();
|
||||||
|
pars.jpeg.quality = 10;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.jpg"), String::from(output), pars).unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn optimize_jpeg() {
|
||||||
|
let output = "tests/samples/output/compressed_optimized_드림캐쳐.jpg";
|
||||||
|
initialize(output);
|
||||||
|
let mut pars = caesium::initialize_parameters();
|
||||||
|
pars.optimize = true;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.jpg"), String::from(output), pars).unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
|
||||||
|
//Floats error
|
||||||
|
assert!(diff(output) < 0.001);
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,59 @@
|
||||||
|
use std::sync::Once;
|
||||||
|
use std::fs;
|
||||||
|
use std::path::Path;
|
||||||
|
use std::fs::File;
|
||||||
|
use std::io::BufReader;
|
||||||
|
use exif::{Tag, In, Field};
|
||||||
|
|
||||||
|
static INIT: Once = Once::new();
|
||||||
|
|
||||||
|
pub fn initialize(file: &str) {
|
||||||
|
INIT.call_once(|| {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn cleanup(file: &str) {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_80_with_metadata() {
|
||||||
|
let output = "tests/samples/output/compressed_80_metadata.jpg";
|
||||||
|
initialize(output);
|
||||||
|
let mut pars = caesium::initialize_parameters();
|
||||||
|
pars.jpeg.quality = 80;
|
||||||
|
pars.keep_metadata = true;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.jpg"), String::from(output), pars).unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
let model = get_model_metadata(Path::new(output));
|
||||||
|
assert_eq!(model.display_value().to_string(), "\"Canon EOS 2000D\"");
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn optimize_with_metadata() {
|
||||||
|
let output = "tests/samples/output/optimized_metadata.jpg";
|
||||||
|
initialize(output);
|
||||||
|
let mut pars = caesium::initialize_parameters();
|
||||||
|
pars.optimize = true;
|
||||||
|
pars.keep_metadata = true;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.jpg"), String::from(output), pars).unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
let model = get_model_metadata(Path::new(output));
|
||||||
|
assert_eq!(model.display_value().to_string(), "\"Canon EOS 2000D\"");
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn get_model_metadata(path: &Path) -> Field {
|
||||||
|
let file = File::open(path).unwrap();
|
||||||
|
let exif = exif::Reader::new().read_from_container(&mut BufReader::new(&file)).unwrap();
|
||||||
|
|
||||||
|
let f = exif.get_field(Tag::Model, In::PRIMARY).unwrap();
|
||||||
|
|
||||||
|
f.clone()
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,61 @@
|
||||||
|
use caesium;
|
||||||
|
use std::sync::Once;
|
||||||
|
use std::fs;
|
||||||
|
|
||||||
|
static INIT: Once = Once::new();
|
||||||
|
|
||||||
|
pub fn initialize(file: &str) {
|
||||||
|
INIT.call_once(|| {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn cleanup(file: &str) {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn standard_compress_png() {
|
||||||
|
let output = "tests/samples/output/compressed.png";
|
||||||
|
initialize(output);
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.png"),
|
||||||
|
String::from(output),
|
||||||
|
caesium::initialize_parameters())
|
||||||
|
.unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn standard_compress_png_with_optimize_flag() {
|
||||||
|
let output = "tests/samples/output/compressed_max.png";
|
||||||
|
initialize(output);
|
||||||
|
let mut params = caesium::initialize_parameters();
|
||||||
|
params.optimize = true;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.png"),
|
||||||
|
String::from(output),
|
||||||
|
params)
|
||||||
|
.unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn zopfli_compress_png() {
|
||||||
|
let output = "tests/samples/output/optimized.png";
|
||||||
|
initialize(output);
|
||||||
|
let mut params = caesium::initialize_parameters();
|
||||||
|
params.png.level = 3;
|
||||||
|
params.optimize = true;
|
||||||
|
params.png.force_zopfli = true;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_드림캐쳐.png"),
|
||||||
|
String::from(output),
|
||||||
|
params)
|
||||||
|
.unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
Binary file not shown.
|
After Width: | Height: | Size: 630 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 2.5 MiB |
Binary file not shown.
|
After Width: | Height: | Size: 26 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 1.8 MiB |
|
|
@ -0,0 +1,89 @@
|
||||||
|
use caesium;
|
||||||
|
use std::sync::Once;
|
||||||
|
use std::fs;
|
||||||
|
|
||||||
|
static INIT: Once = Once::new();
|
||||||
|
|
||||||
|
pub fn initialize(file: &str) {
|
||||||
|
INIT.call_once(|| {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn cleanup(file: &str) {
|
||||||
|
if fs::metadata(file).is_ok() {
|
||||||
|
fs::remove_file(file).unwrap();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_20() {
|
||||||
|
let output = "tests/samples/output/compressed_20.webp";
|
||||||
|
initialize(output);
|
||||||
|
let mut params = caesium::initialize_parameters();
|
||||||
|
params.webp.quality = 20;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_家.webp"),
|
||||||
|
String::from(output),
|
||||||
|
params)
|
||||||
|
.unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_50() {
|
||||||
|
let output = "tests/samples/output/compressed_50.webp";
|
||||||
|
initialize(output);
|
||||||
|
let mut params = caesium::initialize_parameters();
|
||||||
|
params.webp.quality = 50;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_家.webp"),
|
||||||
|
String::from(output),
|
||||||
|
params)
|
||||||
|
.unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_80() {
|
||||||
|
let output = "tests/samples/output/compressed_80.webp";
|
||||||
|
initialize(output);
|
||||||
|
let mut params = caesium::initialize_parameters();
|
||||||
|
params.webp.quality = 80;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_家.webp"),
|
||||||
|
String::from(output),
|
||||||
|
params)
|
||||||
|
.unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn compress_100() {
|
||||||
|
let output = "tests/samples/output/compressed_100.webp";
|
||||||
|
initialize(output);
|
||||||
|
let mut params = caesium::initialize_parameters();
|
||||||
|
params.webp.quality = 100;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_家.webp"),
|
||||||
|
String::from(output),
|
||||||
|
params)
|
||||||
|
.unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn optimize() {
|
||||||
|
let output = "tests/samples/output/optimized.webp";
|
||||||
|
initialize(output);
|
||||||
|
let mut params = caesium::initialize_parameters();
|
||||||
|
params.optimize = true;
|
||||||
|
caesium::compress(String::from("tests/samples/uncompressed_家.webp"),
|
||||||
|
String::from(output),
|
||||||
|
params)
|
||||||
|
.unwrap();
|
||||||
|
assert!(std::path::Path::new(output).exists());
|
||||||
|
cleanup(output)
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue