[EXP] add support for encoding in formats heif and avif

This change introduces support for encoding ultrahdr images in
avif/heif format. For this functionality, libheif project is used. For
avif encoding libaom is required, for heif encoding x265 is required.
Also this feature is by default disabled and can be enabled at
configure time with option -DUHDR_ENABLE_EXPERIMENTAL_FEATURES=1

Test: ultrahdr_app

CMakeLists.txt

@@ -123,6 +123,7 @@ option_if_not_defined(UHDR_ENABLE_INSTALL "Enable install and uninstall targets
 option_if_not_defined(UHDR_ENABLE_INTRINSICS "Build with SIMD acceleration " TRUE)
 option_if_not_defined(UHDR_ENABLE_GLES "Build with GPU acceleration " FALSE)
 option_if_not_defined(UHDR_ENABLE_WERROR "Build with -Werror" FALSE)
+option_if_not_defined(UHDR_ENABLE_EXPERIMENTAL_FEATURES "Enable experimental features " FALSE)
 
 # These options effect only encoding process.
 # Decoding continues to support both iso and xmp irrespective of this configuration.
@@ -168,6 +169,15 @@ if(UHDR_BUILD_DEPS AND UHDR_ENABLE_INSTALL)
   message(STATUS "Install and uninstall targets - Disabled")
 endif()
 
+if(UHDR_ENABLE_EXPERIMENTAL_FEATURES AND UHDR_ENABLE_INSTALL)
+  set(UHDR_ENABLE_INSTALL FALSE) # disable install and uninstall targets if experimental features are enabled
+  message(STATUS "Install and uninstall targets - Disabled")
+endif()
+
+if(UHDR_ENABLE_EXPERIMENTAL_FEATURES AND EMSCRIPTEN)
+  message(FATAL_ERROR "Building experimental features not supported for wasm targets")
+endif()
+
 ###########################################################
 # Compile flags
 ###########################################################
@@ -478,6 +488,62 @@ if(NOT JPEG_FOUND)
   endif()
 endif()
 
+# libheif
+if(UHDR_ENABLE_EXPERIMENTAL_FEATURES)
+  find_package(AOM QUIET)
+  if(NOT AOM_FOUND)
+    message(FATAL_ERROR "Could NOT find AOM (missing: AOM_LIBRARIES AOM_INCLUDE_DIRS),\
+            retry after installing aom codec at sysroot")
+  else()
+    message(STATUS "Found AOM: ${AOM_LIBRARIES}")
+  endif()
+  find_package(X265 QUIET)
+  if(NOT X265_FOUND)
+    message(STATUS "Could NOT find X265 (missing: X265_LIBRARIES X265_INCLUDE_DIRS)")
+  else()
+    message(STATUS "Found X265: ${X265_LIBRARIES}")
+  endif()
+  find_package(LIBDE265 QUIET)
+  if(NOT LIBDE265_FOUND)
+    message(STATUS "Could NOT find LIBDE265 (missing: LIBDE265_LIBRARIES LIBDE265_INCLUDE_DIRS)")
+  else()
+    message(STATUS "Found LIBDE265: ${LIBDE265_LIBRARIES}")
+  endif()
+  add_compile_options(-DUHDR_ENABLE_HEIF)
+  add_compile_options(-DWITH_EXPERIMENTAL_GAIN_MAP=1)
+  set(HEIF_TARGET_NAME libheif)
+  set(HEIF_PREFIX_DIR ${CMAKE_CURRENT_BINARY_DIR}/${HEIF_TARGET_NAME})
+  set(HEIF_SOURCE_DIR ${THIRD_PARTY_DIR}/${HEIF_TARGET_NAME})
+  set(HEIF_BINARY_DIR ${HEIF_PREFIX_DIR}/src/${HEIF_TARGET_NAME}-build/libheif)
+  set(HEIF_INCLUDE_DIRS ${HEIF_SOURCE_DIR}/libheif/api/ ${HEIF_BINARY_DIR})
+  set(HEIF_LIB ${CMAKE_STATIC_LIBRARY_PREFIX}heif${CMAKE_STATIC_LIBRARY_SUFFIX})
+  if(MSVC)
+    set(HEIF_LIB ${CMAKE_STATIC_LIBRARY_PREFIX}heif${CMAKE_STATIC_LIBRARY_SUFFIX})
+  else()
+    set(HEIF_LIB ${CMAKE_STATIC_LIBRARY_PREFIX}heif${CMAKE_STATIC_LIBRARY_SUFFIX})
+  endif()
+  if(IS_MULTI)
+    set(HEIF_LIB_PREFIX ${HEIF_BINARY_DIR}/libheif/$<CONFIG>/)
+  else()
+    set(HEIF_LIB_PREFIX ${HEIF_BINARY_DIR}/libheif/)
+  endif()
+  set(HEIF_LIBRARIES ${HEIF_LIB_PREFIX}${HEIF_LIB})
+  ExternalProject_Add(${HEIF_TARGET_NAME}
+      GIT_REPOSITORY https://github.com/strukturag/libheif.git
+      GIT_TAG v1.19.5
+      PATCH_COMMAND git am ${CMAKE_CURRENT_SOURCE_DIR}/cmake/0001-EXP-add-support-for-gainmap-encoding.patch
+      PREFIX ${HEIF_PREFIX_DIR}
+      SOURCE_DIR ${HEIF_SOURCE_DIR}
+      BINARY_DIR ${HEIF_BINARY_DIR}
+      CMAKE_ARGS ${UHDR_CMAKE_ARGS}
+                 -DBUILD_SHARED_LIBS=0
+                 -DWITH_EXPERIMENTAL_GAIN_MAP=1
+                 -DWITH_DAV1D=0 -DWITH_OpenH264_ENCODER=0 -DWITH_OpenH264_DECODER=0
+      BUILD_BYPRODUCTS ${HEIF_LIBRARIES}
+      INSTALL_COMMAND ""
+  )
+endif()
+
 if(UHDR_BUILD_JAVA)
   # build jni and java util classes
   find_package(Java REQUIRED)
@@ -585,6 +651,19 @@ if(UHDR_ENABLE_GLES)
   list(APPEND PRIVATE_INCLUDE_DIR ${EGL_INCLUDE_DIRS} ${OPENGLES3_INCLUDE_DIRS})
   list(APPEND PRIVATE_LINK_LIBS ${EGL_LIBRARIES} ${OPENGLES3_LIBRARIES})
 endif()
+if(UHDR_ENABLE_EXPERIMENTAL_FEATURES)
+  list(APPEND PRIVATE_INCLUDE_DIR ${HEIF_INCLUDE_DIRS})
+  list(APPEND PRIVATE_LINK_LIBS ${HEIF_LIBRARIES})
+  if(AOM_FOUND)
+    list(APPEND PRIVATE_LINK_LIBS ${AOM_LIBRARIES})
+  endif()
+  if(X265_FOUND)
+    list(APPEND PRIVATE_LINK_LIBS ${X265_LIBRARIES})
+  endif()
+  if(LIBDE265_FOUND)
+    list(APPEND PRIVATE_LINK_LIBS ${LIBDE265_LIBRARIES})
+  endif()
+endif()
 
 ###########################################################
 # Targets
@@ -602,6 +681,9 @@ target_compile_options(${UHDR_CORE_LIB_NAME} PRIVATE ${UHDR_WERROR_FLAGS})
 if(NOT JPEG_FOUND)
   add_dependencies(${UHDR_CORE_LIB_NAME} ${JPEGTURBO_TARGET_NAME})
 endif()
+if(UHDR_ENABLE_EXPERIMENTAL_FEATURES)
+  add_dependencies(${UHDR_CORE_LIB_NAME} ${HEIF_TARGET_NAME})
+endif()
 if(NOT MSVC)
   target_compile_options(${UHDR_CORE_LIB_NAME} PRIVATE -Wall -Wextra -Wshadow)
 endif()