Merge pull request #3 from sot-tech/gif_alpha

Implement GIF transparency

.gitignore

@@ -1,6 +1,5 @@
+/.idea
 /build
 /dist
-/nbproject/private
-/AnimatedSticker.tgs
-/AnimatedSticker.json
-/out*
+/cmake-build*
+/test/out

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "3p/giflib"]
+	path = lib/giflib
+	url = git://git.code.sf.net/p/giflib/code
+[submodule "3p/rlottie"]
+	path = lib/rlottie
+	url = https://github.com/Samsung/rlottie.git
+[submodule "3p/libpng"]
+	path = lib/libpng
+	url = git://git.code.sf.net/p/libpng/code

CMakeLists.txt

@@ -0,0 +1,143 @@
+cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
+project(lottieconverter)
+include(ExternalProject)
+include(FindPackageMessage)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_C_STANDARD 99)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+set(CMAKE_C_STANDARD_REQUIRED True)
+set(ZLIB_MINIMUM 1.2.3)
+set(PNG_MINIMUM 1.6.0)
+
+set(COMPILE_PARAMS -Wall)
+set(SOURCE_FILES lottie_export.cpp)
+set(LIBS z)
+set(INCLUDES)
+add_executable(${PROJECT_NAME})
+
+if (CMAKE_BUILD_TYPE EQUAL "RELEASE")
+    set(COMPILE_PARAMS ${COMPILE_PARAMS} -O2)
+else(CMAKE_BUILD_TYPE)
+    set(COMPILE_PARAMS ${COMPILE_PARAMS} -O0 -g3)
+endif()
+
+option(SYSTEM_PNG "Use system dynamic libpng" 1)
+option(SYSTEM_RL "Use system dynamic rlottie" 0)
+option(SYSTEM_GL "Use system shared giflib" 0)
+
+enable_testing()
+
+
+find_package(ZLIB ${ZLIB_MINIMUM} REQUIRED)
+
+if(SYSTEM_PNG)
+    find_package(PNG ${PNG_MINIMUM} REQUIRED)
+    set(LIBS ${LIBS} png)
+else()
+    message(NOTICE "-- Building static libpng")
+    ExternalProject_Add(
+            png
+            URL "${CMAKE_SOURCE_DIR}/lib/libpng"
+            ${ARGN}
+            PREFIX "${CMAKE_BINARY_DIR}/lib/libpng"
+            CMAKE_ARGS
+            -Wno-dev
+            "-DCMAKE_TOOLCHAIN_FILE:PATH=${CMAKE_TOOLCHAIN_FILE}"
+            "-DCMAKE_USER_MAKE_RULES_OVERRIDE=${CMAKE_USER_MAKE_RULES_OVERRIDE}"
+            "-DCMAKE_C_FLAGS:STRING=${CMAKE_C_FLAGS}"
+            "-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}"
+            "-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>"
+            "-DBUILD_SHARED_LIBS=OFF"
+            "-DPNG_SHARED=OFF"
+            "-DPNG_TESTS=OFF"
+            "-DCMAKE_INSTALL_LIBDIR=${CMAKE_BINARY_DIR}/lib/libpng"
+            BUILD_BYPRODUCTS "${CMAKE_BINARY_DIR}/lib/libpng/libpng.a"
+    )
+    set(INCLUDES ${INCLUDES} "${CMAKE_BINARY_DIR}/lib/libpng/include")
+    set(LIBS ${LIBS} pthread "${CMAKE_BINARY_DIR}/lib/libpng/libpng.a")
+    add_dependencies(${PROJECT_NAME} png)
+endif()
+
+if (SYSTEM_RL)
+    find_path(RL_INCLUDEDIR NAMES rlottie.h HINTS ${_RL_INCLUDEDIR} REQUIRED)
+    find_library(RL_LIBDIR NAMES rlottie HINTS ${_RL_LIBDIR} REQUIRED)
+    find_package_message(rlottie "Found RLOTTIE: ${RL_LIBDIR}" "Include path: ${RL_INCLUDEDIR}")
+    set(LIBS ${LIBS} "${RL_LIBDIR}")
+    set(INCLUDES ${INCLUDES} "${RL_INCLUDEDIR}")
+else ()
+    message(NOTICE "-- Building static rlottie")
+    ExternalProject_Add(
+            rlottie
+            URL "${CMAKE_SOURCE_DIR}/lib/rlottie"
+            ${ARGN}
+            PREFIX "${CMAKE_BINARY_DIR}/lib/rlottie"
+            CMAKE_ARGS
+            -Wno-dev
+            "-DCMAKE_TOOLCHAIN_FILE:PATH=${CMAKE_TOOLCHAIN_FILE}"
+            "-DCMAKE_USER_MAKE_RULES_OVERRIDE=${CMAKE_USER_MAKE_RULES_OVERRIDE}"
+            "-DCMAKE_C_FLAGS:STRING=${CMAKE_C_FLAGS}"
+            "-DCMAKE_CXX_FLAGS:STRING=${CMAKE_CXX_FLAGS}"
+            "-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}"
+            "-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>"
+            "-DLOTTIE_MODULE=OFF"
+            "-DBUILD_SHARED_LIBS=OFF"
+            "-DLIB_INSTALL_DIR=${CMAKE_BINARY_DIR}/lib/rlottie"
+            BUILD_BYPRODUCTS "${CMAKE_BINARY_DIR}/lib/rlottie/librlottie.a"
+    )
+    set(INCLUDES ${INCLUDES} "${CMAKE_BINARY_DIR}/lib/rlottie/include")
+    set(LIBS ${LIBS} pthread "${CMAKE_BINARY_DIR}/lib/rlottie/librlottie.a")
+    add_dependencies(${PROJECT_NAME} rlottie)
+endif ()
+
+if(SYSTEM_GL)
+    find_path(GL_INCLUDEDIR NAMES gif_lib.h HINTS ${_GL_INCLUDEDIR} REQUIRED)
+    find_library(GL_LIBDIR NAMES gif HINTS ${_GL_LIBDIR} REQUIRED)
+    find_package_message(gif "Found GIF: ${GL_LIBDIR}" "Include path: ${GL_INCLUDEDIR}")
+    set(INCLUDES ${INCLUDES} "${GL_INCLUDEDIR}")
+    set(LIBS ${LIBS} "${GL_LIBDIR}")
+    set(SOURCE_FILES ${SOURCE_FILES} gif_quantize.c)
+else()
+    message(NOTICE "-- Building static giflib")
+    file(COPY ${CMAKE_SOURCE_DIR}/lib/giflib DESTINATION ${CMAKE_BINARY_DIR}/lib)
+
+    add_custom_target(
+            giflibProject
+            COMMAND make libgif.a libutil.a
+            WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/lib/giflib"
+            BYPRODUCTS "${CMAKE_BINARY_DIR}/lib/giflib/libgif.a" "${CMAKE_BINARY_DIR}/lib/giflib/libutil.a"
+    )
+
+    add_library(giflibUtil STATIC IMPORTED)
+    add_dependencies(giflibUtil giflibProject)
+    set_target_properties(giflibUtil
+            PROPERTIES IMPORTED_LOCATION "${CMAKE_BINARY_DIR}/lib/giflib/libutil.a"
+            )
+
+    add_library(giflibMain STATIC IMPORTED)
+    add_dependencies(giflibMain giflibProject)
+    set_target_properties(giflibMain
+            PROPERTIES IMPORTED_LOCATION "${CMAKE_BINARY_DIR}/lib/giflib/libgif.a"
+    )
+
+    add_library(giflib INTERFACE IMPORTED)
+    set_property(TARGET giflib PROPERTY
+            INTERFACE_LINK_LIBRARIES giflibUtil giflibMain)
+    #add_dependencies(giflib giflibMain giflibUtil)
+
+    set(LIBS ${LIBS} giflib)
+    add_dependencies(${PROJECT_NAME} giflib)
+    set(INCLUDES ${INCLUDES} "${CMAKE_BINARY_DIR}/lib/giflib")
+endif()
+
+if(INCLUDES)
+    include_directories(${INCLUDES})
+endif()
+target_sources(${PROJECT_NAME} PRIVATE ${SOURCE_FILES})
+target_compile_options(${PROJECT_NAME} PUBLIC PRIVATE ${COMPILE_PARAMS})
+target_link_libraries(${PROJECT_NAME} PUBLIC ${LIBS})
+
+add_test(NAME convert
+        COMMAND run.sh $<TARGET_FILE:lottieconverter>
+        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/test"
+        )

LICENSE.txt

@@ -0,0 +1,24 @@
+BSD-3-Clause
+Copyright 2021 sot
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+1. Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+this list of conditions and the following disclaimer in the documentation and/or
+other materials provided with the distribution.
+3. Neither the name of the copyright holder nor the names of its contributors
+may be used to endorse or promote products derived from this software without
+specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+OF SUCH DAMAGE.