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imagedec: support metadata reading for WebP image decoding

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Needs to link imagedec.a to demux/libwebpdemux.a

Change-Id: Id8f4068718b0e4a1e84607bccd5af5419120c231
This commit is contained in:
Pascal Massimino 2017-03-02 08:45:42 -08:00 committed by James Zern
parent c4cc114785
commit 641cedccd3
10 changed files with 88 additions and 23 deletions
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3
CMakeLists.txt
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@ -192,7 +192,8 @@ if(WEBP_BUILD_CWEBP OR WEBP_BUILD_DWEBP OR
parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEDEC_SRCS"
"imagedec_[^ ]*")
add_library(imagedec ${IMAGEDEC_SRCS})
target_link_libraries(imagedec imageioutil webp ${WEBP_DEP_IMG_LIBRARIES})
target_link_libraries(imagedec imageioutil webpdemux webp
${WEBP_DEP_IMG_LIBRARIES})
# Image-encoding utility library.
parse_Makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEENC_SRCS"

11
Makefile.vc
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@ -368,9 +368,11 @@ $(DIRBIN)\anim_dump.exe: $(EX_GIF_DEC_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\anim_dump.exe: $(IMAGEIO_ENC_OBJS)
$(DIRBIN)\cwebp.exe: $(DIROBJ)\examples\cwebp.obj $(IMAGEIO_DEC_OBJS)
$(DIRBIN)\cwebp.exe: $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\cwebp.exe: $(LIBWEBPDEMUX)
$(DIRBIN)\dwebp.exe: $(DIROBJ)\examples\dwebp.obj $(IMAGEIO_DEC_OBJS)
$(DIRBIN)\dwebp.exe: $(IMAGEIO_ENC_OBJS)
$(DIRBIN)\dwebp.exe: $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\dwebp.exe: $(LIBWEBPDEMUX)
$(DIRBIN)\gif2webp.exe: $(DIROBJ)\examples\gif2webp.obj $(EX_GIF_DEC_OBJS)
$(DIRBIN)\gif2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBPMUX)
$(DIRBIN)\gif2webp.exe: $(LIBWEBP)
@ -383,15 +385,18 @@ $(DIRBIN)\webpmux.exe: $(DIROBJ)\examples\webpmux.obj $(LIBWEBPMUX)
$(DIRBIN)\webpmux.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
$(DIRBIN)\img2webp.exe: $(DIROBJ)\examples\img2webp.obj $(LIBWEBPMUX)
$(DIRBIN)\img2webp.exe: $(IMAGEIO_DEC_OBJS)
$(DIRBIN)\img2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
$(DIRBIN)\img2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\img2webp.exe: $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\get_disto.exe: $(DIROBJ)\extras\get_disto.obj
$(DIRBIN)\get_disto.exe: $(IMAGEIO_DEC_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
$(DIRBIN)\get_disto.exe: $(IMAGEIO_DEC_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\get_disto.exe: $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\webp_quality.exe: $(DIROBJ)\extras\webp_quality.obj
$(DIRBIN)\webp_quality.exe: $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\webp_quality.exe: $(EXTRAS_OBJS) $(LIBWEBP)
$(DIRBIN)\webpinfo.exe: $(DIROBJ)\examples\webpinfo.obj
$(DIRBIN)\webpinfo.exe: $(IMAGEIO_DEC_OBJS)
$(DIRBIN)\webpinfo.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
$(DIRBIN)\webpinfo.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\webpinfo.exe: $(LIBWEBPDEMUX) $(LIBWEBP)
$(OUT_EXAMPLES): $(EX_UTIL_OBJS) $(LIBWEBP)
$(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS): $(OUTPUT_DIRS)

4
build.gradle
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@ -289,6 +289,7 @@ model {
imagedec(NativeLibrarySpec) {
binaries {
all {
lib library: "webpdemux", linkage: "static"
lib library: "webp", linkage: "static"
}
}
@ -331,6 +332,7 @@ model {
lib library: "example_util", linkage: "static"
lib library: "imagedec", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webpdemux", linkage: "static"
lib library: "webp", linkage: "static"
}
}
@ -351,6 +353,7 @@ model {
lib library: "imagedec", linkage: "static"
lib library: "imageenc", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webpdemux", linkage: "static"
lib library: "webp"
}
}
@ -390,6 +393,7 @@ model {
lib library: "imagedec", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webpmux", linkage: "static"
lib library: "webpdemux", linkage: "static"
lib library: "webp"
}
}

11
configure.ac
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@ -601,7 +601,7 @@ AS_IF([test "x$enable_gif" != "xno"], [
AM_CONDITIONAL([BUILD_ANIMDIFF], [test "${build_anim_diff}" = "yes"])
AM_CONDITIONAL([BUILD_GIF2WEBP], [test "${build_gif2webp}" = "yes"])
if test "$enable_libwebpmux" = "yes"; then
if test "$enable_libwebpdemux" = "yes" -a "$enable_libwebpmux" = "yes"; then
build_img2webp=yes
fi
AM_CONDITIONAL([BUILD_IMG2WEBP], [test "${build_img2webp}" = "yes"])
@ -702,8 +702,9 @@ AM_CONDITIONAL([WANT_MUX], [test "$enable_libwebpmux" = "yes"])
dnl === Check whether libwebpdemux should be built
AC_MSG_CHECKING(whether libwebpdemux is to be built)
AC_ARG_ENABLE([libwebpdemux],
AS_HELP_STRING([--enable-libwebpdemux],
[Build libwebpdemux @<:@default=no@:>@]))
AS_HELP_STRING([--disable-libwebpdemux],
[Disable libwebpdemux @<:@default=no@:>@]),
[], [enable_libwebpdemux=yes])
AC_MSG_RESULT(${enable_libwebpdemux-no})
AM_CONDITIONAL([WANT_DEMUX], [test "$enable_libwebpdemux" = "yes"])
@ -752,14 +753,14 @@ libwebpmux: ${enable_libwebpmux-no}
libwebpextras: ${enable_libwebpextras-no}
Tools:
cwebp : yes
cwebp : ${enable_libwebpdemux-no}
Input format support
====================
JPEG : ${jpeg_support-no}
PNG : ${png_support-no}
TIFF : ${tiff_support-no}
WIC : ${wic_support-no}
dwebp : yes
dwebp : ${enable_libwebpdemux-no}
Output format support
=====================
PNG : ${png_support-no}

8
examples/Android.mk
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@ -27,7 +27,7 @@ LOCAL_SRC_FILES := \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webp
LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webpdemux webp
LOCAL_MODULE := cwebp
@ -43,8 +43,7 @@ LOCAL_SRC_FILES := \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_STATIC_LIBRARIES := example_util imagedec imageenc webp
LOCAL_STATIC_LIBRARIES := example_util imagedec imageenc webpdemux webp
LOCAL_MODULE := dwebp
include $(BUILD_EXECUTABLE)
@ -75,7 +74,8 @@ LOCAL_SRC_FILES := \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webpmux webp
LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webpmux webpdemux \
webp
LOCAL_MODULE := img2webp_example

5
examples/Makefile.am
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@ -1,6 +1,9 @@
AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
bin_PROGRAMS = dwebp cwebp
bin_PROGRAMS =
if WANT_DEMUX
bin_PROGRAMS += dwebp cwebp
endif
if BUILD_ANIMDIFF
noinst_PROGRAMS = anim_diff anim_dump
endif

5
extras/Makefile.am
View File

@ -13,7 +13,10 @@ libwebpextras_la_LDFLAGS = -lm
libwebpextras_la_LIBADD = ../src/libwebp.la
noinst_PROGRAMS =
noinst_PROGRAMS += get_disto webp_quality
noinst_PROGRAMS += webp_quality
if WANT_DEMUX
noinst_PROGRAMS += get_disto
endif
if BUILD_VWEBP_SDL
noinst_PROGRAMS += vwebp_sdl
endif

3
imageio/Makefile.am
View File

@ -1,7 +1,9 @@
AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
noinst_LTLIBRARIES =
noinst_LTLIBRARIES += libimageio_util.la
if WANT_DEMUX
noinst_LTLIBRARIES += libimagedec.la
endif
noinst_LTLIBRARIES += libimageenc.la
noinst_HEADERS =
@ -22,6 +24,7 @@ libimagedec_la_SOURCES += webpdec.c webpdec.h
libimagedec_la_SOURCES += wicdec.c wicdec.h
libimagedec_la_CPPFLAGS = $(JPEG_INCLUDES) $(PNG_INCLUDES) $(TIFF_INCLUDES)
libimagedec_la_CPPFLAGS += $(AM_CPPFLAGS)
libimagedec_la_LIBADD = ../src/demux/libwebpdemux.la
libimageenc_la_SOURCES =
libimageenc_la_SOURCES += image_enc.c image_enc.h

51
imageio/webpdec.c
View File

@ -15,10 +15,12 @@
#include "./webpdec.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "webp/decode.h"
#include "webp/demux.h"
#include "webp/encode.h"
#include "./imageio_util.h"
#include "./metadata.h"
@ -102,6 +104,40 @@ VP8StatusCode DecodeWebPIncremental(
return status;
}
// -----------------------------------------------------------------------------
// Metadata
static int ExtractMetadata(const uint8_t* const data, size_t data_size,
Metadata* const metadata) {
WebPData webp_data = { data, data_size };
WebPDemuxer* const demux = WebPDemux(&webp_data);
WebPChunkIterator chunk_iter;
uint32_t flags;
if (demux == NULL) return 0;
assert(metadata != NULL);
flags = WebPDemuxGetI(demux, WEBP_FF_FORMAT_FLAGS);
if ((flags & ICCP_FLAG) && WebPDemuxGetChunk(demux, "ICCP", 1, &chunk_iter)) {
MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
&metadata->iccp);
WebPDemuxReleaseChunkIterator(&chunk_iter);
}
if ((flags & EXIF_FLAG) && WebPDemuxGetChunk(demux, "EXIF", 1, &chunk_iter)) {
MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
&metadata->exif);
WebPDemuxReleaseChunkIterator(&chunk_iter);
}
if ((flags & XMP_FLAG) && WebPDemuxGetChunk(demux, "XMP ", 1, &chunk_iter)) {
MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
&metadata->xmp);
WebPDemuxReleaseChunkIterator(&chunk_iter);
}
WebPDemuxDelete(demux);
return 1;
}
// -----------------------------------------------------------------------------
int ReadWebP(const uint8_t* const data, size_t data_size,
@ -115,11 +151,6 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
if (data == NULL || data_size == 0 || pic == NULL) return 0;
// TODO(jzern): add Exif/XMP/ICC extraction.
if (metadata != NULL) {
fprintf(stderr, "Warning: metadata extraction from WebP is unsupported.\n");
}
if (!WebPInitDecoderConfig(&config)) {
fprintf(stderr, "Library version mismatch!\n");
return 0;
@ -181,7 +212,6 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
status = DecodeWebP(data, data_size, &config);
ok = (status == VP8_STATUS_OK);
if (!ok) WebPPictureFree(pic);
if (ok && !keep_alpha && pic->use_argb) {
// Need to wipe out the alpha value, as requested.
int x, y;
@ -195,9 +225,18 @@ int ReadWebP(const uint8_t* const data, size_t data_size,
if (status != VP8_STATUS_OK) {
PrintWebPError("input data", status);
ok = 0;
}
WebPFreeDecBuffer(output_buffer);
if (ok && metadata != NULL) {
ok = ExtractMetadata(data, data_size, metadata);
if (!ok) {
PrintWebPError("metadata", VP8_STATUS_BITSTREAM_ERROR);
}
}
if (!ok) WebPPictureFree(pic);
return ok;
}

8
makefile.unix
View File

@ -409,11 +409,13 @@ examples/anim_dump: src/libwebp.a
examples/anim_dump: EXTRA_LIBS += $(GIF_LIBS) $(DWEBP_LIBS)
examples/cwebp: examples/libexample_util.a
examples/cwebp: imageio/libimagedec.a
examples/cwebp: src/demux/libwebpdemux.a
examples/cwebp: imageio/libimageio_util.a
examples/cwebp: src/libwebp.a
examples/cwebp: EXTRA_LIBS += $(CWEBP_LIBS)
examples/dwebp: examples/libexample_util.a
examples/dwebp: imageio/libimagedec.a
examples/dwebp: src/demux/libwebpdemux.a
examples/dwebp: imageio/libimageenc.a
examples/dwebp: imageio/libimageio_util.a
examples/dwebp: src/libwebp.a
@ -430,13 +432,17 @@ examples/webpmux: examples/libexample_util.a imageio/libimageio_util.a
examples/webpmux: src/mux/libwebpmux.a src/libwebpdecoder.a
examples/img2webp: examples/libexample_util.a imageio/libimageio_util.a
examples/img2webp: imageio/libimagedec.a
examples/img2webp: src/demux/libwebpdemux.a
examples/img2webp: src/mux/libwebpmux.a src/libwebp.a
examples/img2webp: EXTRA_LIBS += $(CWEBP_LIBS)
examples/webpinfo: examples/libexample_util.a imageio/libimageio_util.a
examples/webpinfo: src/libwebpdecoder.a
extras/get_disto: extras/get_disto.o
extras/get_disto: imageio/libimagedec.a imageio/libimageio_util.a src/libwebp.a
extras/get_disto: imageio/libimagedec.a
extras/get_disto: src/demux/libwebpdemux.a
extras/get_disto: imageio/libimageio_util.a
extras/get_disto: src/libwebp.a
extras/get_disto: EXTRA_LIBS += $(CWEBP_LIBS)
extras/webp_quality: extras/webp_quality.o