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img2webp: convert a sequence of images to an animated webp

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Usage:

  img2webp [file-level options] [image files...] [per-frame options...]

File-level options (only used at the start of compression):
 -min_size ............ minimize size
 -loop <int> .......... loop count (default: 0, = infinite loop)
 -kmax <int> .......... maximum number of frame between key-frames
                        (0=only keyframes)
 -kmin <int> .......... minimum number of frame between key-frames
                        (0=disable key-frames altogether)
 -mixed ............... use mixed lossy/lossless automatic mode
 -v ................... verbose mode
 -h ................... this help

Per-frame options (only used for subsequent images input):
 -d <int> ............. frame duration in ms (default: 100)
 -lossless  ........... use lossless mode (default)
 -lossy ... ........... use lossy mode
 -q <float> ........... quality
 -m <int> ............. method to use

example: img2webp -loop 2 in0.png -lossy in1.jpg
                  -d 80 in2.tiff -o out.webp

Change-Id: I23771b90eaf0660f420d7ffd304e704155386286
This commit is contained in:
Pascal Massimino
2016-12-02 11:44:17 +01:00
parent ea72cd60cb
commit 03f40955a3
10 changed files with 493 additions and 4 deletions
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15
CMakeLists.txt
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@@ -6,6 +6,7 @@ project(libwebp C)
option(WEBP_BUILD_CWEBP "Build the cwebp command line tool." OFF)
option(WEBP_BUILD_DWEBP "Build the dwebp command line tool." OFF)
option(WEBP_BUILD_GIF2WEBP "Build the gif2webp conversion tool." OFF)
option(WEBP_BUILD_IMG2WEBP "Build the img2webp animation tool." OFF)
option(WEBP_EXPERIMENTAL_FEATURES "Build with experimental features." OFF)
option(WEBP_ENABLE_SWAP_16BIT_CSP "Enable byte swap for 16 bit colorspaces." OFF)
@@ -95,7 +96,8 @@ foreach(I_FILE RANGE ${WEBP_SIMD_FILES_TO_INCLUDE_RANGE})
endforeach()
# Build the executables if asked for.
if(WEBP_BUILD_CWEBP OR WEBP_BUILD_DWEBP OR WEBP_BUILD_GIF2WEBP)
if(WEBP_BUILD_CWEBP OR WEBP_BUILD_DWEBP OR
WEBP_BUILD_GIF2WEBP OR WEBP_BUILD_IMG2WEBP)
# Example utility library.
set(exampleutil_SRCS
${CMAKE_CURRENT_SOURCE_DIR}/examples/stopwatch.h
@@ -174,3 +176,14 @@ if(WEBP_BUILD_GIF2WEBP)
${WEBP_DEP_LIBRARIES} ${WEBP_DEP_IMG_LIBRARIES}
)
endif()
if(WEBP_BUILD_IMG2WEBP)
# img2webp
include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
set(IMG2WEBP_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/examples/img2webp.c)
parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/src/mux "IMG2WEBP_SRCS")
add_executable(img2webp ${IMG2WEBP_SRCS})
target_link_libraries(img2webp imagedec webp exampleutil imageioutil
${WEBP_DEP_LIBRARIES} ${WEBP_DEP_IMG_LIBRARIES}
)
endif()