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split example_util.h

Browse Source 
move ExUtil*File to imageio_util.h
ExUtil*WebP* to webpdec.h

string parsing routines remain

Change-Id: I0560c4a74e86710d83bc4b5b234f1b5ef9a86f9d
This commit is contained in:
James Zern 2016-07-20 18:25:00 -07:00
parent 15ed462b2d
commit bdda5bd4bf
24 changed files with 447 additions and 344 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
CMakeLists.txt
View File

@ -82,9 +82,13 @@ if(WEBP_BUILD_CWEBP OR WEBP_BUILD_DWEBP)
${CMAKE_CURRENT_SOURCE_DIR}/imageio/example_util.h)
add_library(exampleutil ${exampleutil_SRCS})
target_link_libraries(exampleutil webp ${WEBP_DEP_LIBRARIES})
endif()
if(WEBP_BUILD_CWEBP)
set(imageioutil_SRCS
${CMAKE_CURRENT_SOURCE_DIR}/imageio/imageio_util.c
${CMAKE_CURRENT_SOURCE_DIR}/imageio/imageio_util.h)
add_library(imageioutil ${imageioutil_SRCS})
target_link_libraries(imageioutil ${WEBP_DEP_LIBRARIES})
# Image-decoding utility library.
set(imagedec_SRCS
${CMAKE_CURRENT_SOURCE_DIR}/imageio/image_dec.c
@ -113,8 +117,8 @@ if(WEBP_BUILD_DWEBP)
${CMAKE_CURRENT_SOURCE_DIR}/examples/dwebp.c
${CMAKE_CURRENT_SOURCE_DIR}/examples/stopwatch.h
)
target_link_libraries(dwebp webp exampleutil ${WEBP_DEP_LIBRARIES}
${WEBP_DEP_IMG_LIBRARIES}
target_link_libraries(dwebp imagedec webp exampleutil imageioutil
${WEBP_DEP_LIBRARIES} ${WEBP_DEP_IMG_LIBRARIES}
)
endif()
@ -124,7 +128,7 @@ if(WEBP_BUILD_CWEBP)
add_executable(cwebp
${CMAKE_CURRENT_SOURCE_DIR}/examples/cwebp.c
${CMAKE_CURRENT_SOURCE_DIR}/examples/stopwatch.h)
target_link_libraries(cwebp imagedec webp exampleutil
target_link_libraries(cwebp imagedec webp exampleutil imageioutil
${WEBP_DEP_LIBRARIES} ${WEBP_DEP_IMG_LIBRARIES}
)
endif()

20
Makefile.vc
View File

@ -289,6 +289,9 @@ ENC_OBJS = \
$(DIROBJ)\enc\vp8l.obj \
$(DIROBJ)\enc\webpenc.obj \
IMAGEIO_UTIL_OBJS = \
$(DIROBJ)\imageio\imageio_util.obj \
MUX_OBJS = \
$(DIROBJ)\mux\anim_encode.obj \
$(DIROBJ)\mux\muxedit.obj \
@ -333,18 +336,21 @@ gif2webp: $(DIRBIN)\gif2webp.exe
anim_diff: $(DIRBIN)\anim_diff.exe
$(DIRBIN)\anim_diff.exe: $(DIROBJ)\examples\anim_diff.obj $(EX_ANIM_UTIL_OBJS)
$(DIRBIN)\anim_diff.exe: $(EX_UTIL_OBJS)
$(DIRBIN)\anim_diff.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\anim_diff.exe: $(EX_GIF_DEC_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\cwebp.exe: $(DIROBJ)\examples\cwebp.obj $(EX_FORMAT_DEC_OBJS)
$(DIRBIN)\dwebp.exe: $(DIROBJ)\examples\dwebp.obj
$(DIRBIN)\cwebp.exe: $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\dwebp.exe: $(DIROBJ)\examples\dwebp.obj $(EX_FORMAT_DEC_OBJS)
$(DIRBIN)\dwebp.exe: $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\gif2webp.exe: $(DIROBJ)\examples\gif2webp.obj $(EX_GIF_DEC_OBJS)
$(DIRBIN)\gif2webp.exe: $(EX_UTIL_OBJS) $(LIBWEBPMUX) $(LIBWEBP)
$(DIRBIN)\vwebp.exe: $(DIROBJ)\examples\vwebp.obj
$(DIRBIN)\vwebp.exe: $(EX_UTIL_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\gif2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBPMUX)
$(DIRBIN)\gif2webp.exe: $(LIBWEBP)
$(DIRBIN)\vwebp.exe: $(DIROBJ)\examples\vwebp.obj $(EX_UTIL_OBJS)
$(DIRBIN)\vwebp.exe: $(IMAGEIO_UTIL_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\webpmux.exe: $(DIROBJ)\examples\webpmux.obj $(LIBWEBPMUX)
$(DIRBIN)\webpmux.exe: $(EX_UTIL_OBJS) $(LIBWEBP)
$(DIRBIN)\webpmux.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
$(OUT_EXAMPLES): $(EX_UTIL_OBJS) $(LIBWEBP)
$(EX_UTIL_OBJS) $(EX_FORMAT_DEC_OBJS): $(OUTPUT_DIRS)
$(EX_UTIL_OBJS) $(EX_FORMAT_DEC_OBJS) $(IMAGEIO_UTIL_OBJS): $(OUTPUT_DIRS)
!ENDIF # ARCH == ARM
experimental:

20
build.gradle
View File

@ -255,6 +255,22 @@ model {
}
}
imageio_util(NativeLibrarySpec) {
binaries {
all {
lib library: "webp", linkage: "static"
}
}
sources {
c {
source {
srcDir "./imageio"
include "imageio_util.c"
}
}
}
}
imagedec(NativeLibrarySpec) {
binaries {
all {
@ -280,6 +296,7 @@ model {
all {
lib library: "example_util", linkage: "static"
lib library: "imagedec", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webp", linkage: "static"
}
}
@ -297,6 +314,8 @@ model {
binaries {
all {
lib library: "example_util", linkage: "static"
lib library: "imagedec", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webp"
}
}
@ -314,6 +333,7 @@ model {
binaries {
all {
lib library: "example_util", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webpmux", linkage: "static"
lib library: "webp"
}

6
examples/Android.mk
View File

@ -12,7 +12,7 @@ LOCAL_SRC_FILES := \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_STATIC_LIBRARIES := example_util imagedec webp
LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webp
LOCAL_MODULE := cwebp
@ -28,7 +28,7 @@ LOCAL_SRC_FILES := \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_STATIC_LIBRARIES := example_util webp
LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webp
LOCAL_MODULE := dwebp
@ -44,7 +44,7 @@ LOCAL_SRC_FILES := \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_STATIC_LIBRARIES := example_util webpmux webp
LOCAL_STATIC_LIBRARIES := example_util imageio_util webpmux webp
LOCAL_MODULE := webpmux_example

25
examples/Makefile.am
View File

@ -19,40 +19,41 @@ endif
anim_diff_SOURCES = anim_diff.c anim_util.c anim_util.h
anim_diff_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE) $(GIF_INCLUDES)
anim_diff_LDADD = ../src/demux/libwebpdemux.la
anim_diff_LDADD += ../imageio/libexample_util.la
anim_diff_LDADD += ../imageio/libexample_util.la ../imageio/libimageio_util.la
anim_diff_LDADD += $(GIF_LIBS) -lm
dwebp_SOURCES = dwebp.c stopwatch.h
dwebp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
dwebp_CPPFLAGS += $(JPEG_INCLUDES) $(PNG_INCLUDES)
dwebp_LDADD = ../imageio/libexample_util.la $(PNG_LIBS) $(JPEG_LIBS)
dwebp_LDADD = ../imageio/libexample_util.la ../imageio/libimageio_util.la
dwebp_LDADD += ../imageio/libimagedec.la ../src/libwebp.la
dwebp_LDADD +=$(PNG_LIBS) $(JPEG_LIBS)
cwebp_SOURCES = cwebp.c stopwatch.h
cwebp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
cwebp_LDADD = ../imageio/libexample_util.la ../imageio/libimagedec.la
cwebp_LDADD += ../src/libwebp.la $(JPEG_LIBS) $(PNG_LIBS) $(TIFF_LIBS)
cwebp_LDADD = ../imageio/libexample_util.la ../imageio/libimageio_util.la
cwebp_LDADD += ../imageio/libimagedec.la ../src/libwebp.la
cwebp_LDADD += $(JPEG_LIBS) $(PNG_LIBS) $(TIFF_LIBS)
gif2webp_SOURCES = gif2webp.c gifdec.c gifdec.h
gif2webp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE) $(GIF_INCLUDES)
gif2webp_LDADD = ../imageio/libexample_util.la ../src/mux/libwebpmux.la
gif2webp_LDADD += ../src/libwebp.la $(GIF_LIBS)
gif2webp_LDADD = ../imageio/libexample_util.la ../imageio/libimageio_util.la
gif2webp_LDADD += ../src/mux/libwebpmux.la ../src/libwebp.la $(GIF_LIBS)
webpmux_SOURCES = webpmux.c
webpmux_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
webpmux_LDADD = ../imageio/libexample_util.la ../src/mux/libwebpmux.la
webpmux_LDADD += ../src/libwebp.la
webpmux_LDADD = ../imageio/libexample_util.la ../imageio/libimageio_util.la
webpmux_LDADD += ../src/mux/libwebpmux.la ../src/libwebp.la
vwebp_SOURCES = vwebp.c
vwebp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE) $(GL_INCLUDES)
vwebp_LDADD = ../imageio/libexample_util.la ../src/demux/libwebpdemux.la
vwebp_LDADD += $(GL_LIBS)
vwebp_LDADD = ../imageio/libexample_util.la ../imageio/libimageio_util.la
vwebp_LDADD += ../src/demux/libwebpdemux.la $(GL_LIBS)
if BUILD_LIBWEBPDECODER
anim_diff_LDADD += ../src/libwebpdecoder.la
dwebp_LDADD += ../src/libwebpdecoder.la
vwebp_LDADD += ../src/libwebpdecoder.la
else
anim_diff_LDADD += ../src/libwebp.la
dwebp_LDADD += ../src/libwebp.la
vwebp_LDADD += ../src/libwebp.la
endif

2
examples/anim_util.c
View File

@ -22,7 +22,7 @@
#include "webp/format_constants.h"
#include "webp/decode.h"
#include "webp/demux.h"
#include "../imageio/example_util.h"
#include "../imageio/imageio_util.h"
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf

1
examples/cwebp.c
View File

@ -22,6 +22,7 @@
#include "../imageio/example_util.h"
#include "../imageio/image_dec.h"
#include "../imageio/imageio_util.h"
#include "./stopwatch.h"
#include "webp/encode.h"

2
examples/dwebp.c
View File

@ -41,6 +41,8 @@
#include "webp/decode.h"
#include "../imageio/example_util.h"
#include "../imageio/imageio_util.h"
#include "../imageio/webpdec.h"
#include "./stopwatch.h"
static int verbose = 0;

1
examples/gif2webp.c
View File

@ -27,6 +27,7 @@
#include "webp/encode.h"
#include "webp/mux.h"
#include "../imageio/example_util.h"
#include "../imageio/imageio_util.h"
#include "./gifdec.h"
//------------------------------------------------------------------------------

1
examples/vwebp.c
View File

@ -37,6 +37,7 @@
#include "webp/demux.h"
#include "../imageio/example_util.h"
#include "../imageio/imageio_util.h"
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf

1
examples/webpmux.c
View File

@ -56,6 +56,7 @@
#include "webp/decode.h"
#include "webp/mux.h"
#include "../imageio/example_util.h"
#include "../imageio/imageio_util.h"
//------------------------------------------------------------------------------
// Config object to parse command-line arguments.

4
extras/Makefile.am
View File

@ -14,12 +14,12 @@ noinst_PROGRAMS = get_disto webp_quality
get_disto_SOURCES = get_disto.c
get_disto_CPPFLAGS = $(AM_CPPFLAGS)
get_disto_LDADD = ../imageio/libexample_util.la ../imageio/libimagedec.la
get_disto_LDADD = ../imageio/libimageio_util.la ../imageio/libimagedec.la
get_disto_LDADD += ../src/libwebp.la
get_disto_LDADD += $(PNG_LIBS) $(JPEG_LIBS) $(TIFF_LIBS)
webp_quality_SOURCES = webp_quality.c
webp_quality_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
webp_quality_LDADD = ../imageio/libexample_util.la ../imageio/libimagedec.la
webp_quality_LDADD = ../imageio/libimageio_util.la ../imageio/libimagedec.la
webp_quality_LDADD += ./libwebpextras.la
webp_quality_LDADD += ../src/libwebp.la $(JPEG_LIBS) $(PNG_LIBS) $(TIFF_LIBS)

2
extras/get_disto.c
View File

@ -23,8 +23,8 @@
#include <string.h>
#include "webp/encode.h"
#include "../imageio/example_util.h"
#include "../imageio/image_dec.h"
#include "../imageio/imageio_util.h"
static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
int keep_alpha) {

2
extras/webp_quality.c
View File

@ -13,7 +13,7 @@
#include <string.h>
#include "./extras.h"
#include "../imageio/example_util.h"
#include "../imageio/imageio_util.h"
int main(int argc, const char *argv[]) {
int c;

15
imageio/Android.mk
View File

@ -15,6 +15,21 @@ LOCAL_MODULE := example_util
include $(BUILD_STATIC_LIBRARY)
################################################################################
# libimageio_util
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
imageio_util.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_MODULE := imageio_util
include $(BUILD_STATIC_LIBRARY)
################################################################################
# libimagedec

4
imageio/Makefile.am
View File

@ -1,5 +1,5 @@
AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
noinst_LTLIBRARIES = libexample_util.la libimagedec.la
noinst_LTLIBRARIES = libexample_util.la libimageio_util.la libimagedec.la
noinst_HEADERS =
noinst_HEADERS += ../src/webp/decode.h
@ -8,6 +8,8 @@ noinst_HEADERS += ../examples/stopwatch.h
libexample_util_la_SOURCES = example_util.c example_util.h
libimageio_util_la_SOURCES = imageio_util.c imageio_util.h
libimagedec_la_SOURCES = image_dec.c image_dec.h
libimagedec_la_SOURCES += jpegdec.c jpegdec.h
libimagedec_la_SOURCES += metadata.c metadata.h

236
imageio/example_util.c
View File

@ -12,16 +12,8 @@
#include "./example_util.h"
#if defined(_WIN32)
#include <fcntl.h> // for _O_BINARY
#include <io.h> // for _setmode()
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "webp/decode.h"
#include "../examples/stopwatch.h"
//------------------------------------------------------------------------------
// String parsing
@ -51,231 +43,3 @@ float ExUtilGetFloat(const char* const v, int* const error) {
}
return f;
}
// -----------------------------------------------------------------------------
// File I/O
FILE* ExUtilSetBinaryMode(FILE* file) {
#if defined(_WIN32)
if (_setmode(_fileno(file), _O_BINARY) == -1) {
fprintf(stderr, "Failed to reopen file in O_BINARY mode.\n");
return NULL;
}
#endif
return file;
}
int ExUtilReadFromStdin(const uint8_t** data, size_t* data_size) {
static const size_t kBlockSize = 16384; // default initial size
size_t max_size = 0;
size_t size = 0;
uint8_t* input = NULL;
if (data == NULL || data_size == NULL) return 0;
*data = NULL;
*data_size = 0;
if (!ExUtilSetBinaryMode(stdin)) return 0;
while (!feof(stdin)) {
// We double the buffer size each time and read as much as possible.
const size_t extra_size = (max_size == 0) ? kBlockSize : max_size;
void* const new_data = realloc(input, max_size + extra_size);
if (new_data == NULL) goto Error;
input = (uint8_t*)new_data;
max_size += extra_size;
size += fread(input + size, 1, extra_size, stdin);
if (size < max_size) break;
}
if (ferror(stdin)) goto Error;
*data = input;
*data_size = size;
return 1;
Error:
free(input);
fprintf(stderr, "Could not read from stdin\n");
return 0;
}
int ExUtilReadFile(const char* const file_name,
const uint8_t** data, size_t* data_size) {
int ok;
void* file_data;
size_t file_size;
FILE* in;
const int from_stdin = (file_name == NULL) || !strcmp(file_name, "-");
if (from_stdin) return ExUtilReadFromStdin(data, data_size);
if (data == NULL || data_size == NULL) return 0;
*data = NULL;
*data_size = 0;
in = fopen(file_name, "rb");
if (in == NULL) {
fprintf(stderr, "cannot open input file '%s'\n", file_name);
return 0;
}
fseek(in, 0, SEEK_END);
file_size = ftell(in);
fseek(in, 0, SEEK_SET);
file_data = malloc(file_size);
if (file_data == NULL) return 0;
ok = (fread(file_data, file_size, 1, in) == 1);
fclose(in);
if (!ok) {
fprintf(stderr, "Could not read %d bytes of data from file %s\n",
(int)file_size, file_name);
free(file_data);
return 0;
}
*data = (uint8_t*)file_data;
*data_size = file_size;
return 1;
}
int ExUtilWriteFile(const char* const file_name,
const uint8_t* data, size_t data_size) {
int ok;
FILE* out;
const int to_stdout = (file_name == NULL) || !strcmp(file_name, "-");
if (data == NULL) {
return 0;
}
out = to_stdout ? stdout : fopen(file_name, "wb");
if (out == NULL) {
fprintf(stderr, "Error! Cannot open output file '%s'\n", file_name);
return 0;
}
ok = (fwrite(data, data_size, 1, out) == 1);
if (out != stdout) fclose(out);
return ok;
}
//------------------------------------------------------------------------------
// WebP decoding
static const char* const kStatusMessages[VP8_STATUS_NOT_ENOUGH_DATA + 1] = {
"OK", "OUT_OF_MEMORY", "INVALID_PARAM", "BITSTREAM_ERROR",
"UNSUPPORTED_FEATURE", "SUSPENDED", "USER_ABORT", "NOT_ENOUGH_DATA"
};
static void PrintAnimationWarning(const WebPDecoderConfig* const config) {
if (config->input.has_animation) {
fprintf(stderr,
"Error! Decoding of an animated WebP file is not supported.\n"
" Use webpmux to extract the individual frames or\n"
" vwebp to view this image.\n");
}
}
void ExUtilPrintWebPError(const char* const in_file, int status) {
fprintf(stderr, "Decoding of %s failed.\n", in_file);
fprintf(stderr, "Status: %d", status);
if (status >= VP8_STATUS_OK && status <= VP8_STATUS_NOT_ENOUGH_DATA) {
fprintf(stderr, "(%s)", kStatusMessages[status]);
}
fprintf(stderr, "\n");
}
int ExUtilLoadWebP(const char* const in_file,
const uint8_t** data, size_t* data_size,
WebPBitstreamFeatures* bitstream) {
VP8StatusCode status;
WebPBitstreamFeatures local_features;
if (!ExUtilReadFile(in_file, data, data_size)) return 0;
if (bitstream == NULL) {
bitstream = &local_features;
}
status = WebPGetFeatures(*data, *data_size, bitstream);
if (status != VP8_STATUS_OK) {
free((void*)*data);
*data = NULL;
*data_size = 0;
ExUtilPrintWebPError(in_file, status);
return 0;
}
return 1;
}
//------------------------------------------------------------------------------
VP8StatusCode ExUtilDecodeWebP(const uint8_t* const data, size_t data_size,
int verbose, WebPDecoderConfig* const config) {
Stopwatch stop_watch;
VP8StatusCode status = VP8_STATUS_OK;
if (config == NULL) return VP8_STATUS_INVALID_PARAM;
PrintAnimationWarning(config);
StopwatchReset(&stop_watch);
// Decoding call.
status = WebPDecode(data, data_size, config);
if (verbose) {
const double decode_time = StopwatchReadAndReset(&stop_watch);
fprintf(stderr, "Time to decode picture: %.3fs\n", decode_time);
}
return status;
}
VP8StatusCode ExUtilDecodeWebPIncremental(
const uint8_t* const data, size_t data_size,
int verbose, WebPDecoderConfig* const config) {
Stopwatch stop_watch;
VP8StatusCode status = VP8_STATUS_OK;
if (config == NULL) return VP8_STATUS_INVALID_PARAM;
PrintAnimationWarning(config);
StopwatchReset(&stop_watch);
// Decoding call.
{
WebPIDecoder* const idec = WebPIDecode(data, data_size, config);
if (idec == NULL) {
fprintf(stderr, "Failed during WebPINewDecoder().\n");
return VP8_STATUS_OUT_OF_MEMORY;
} else {
#ifdef WEBP_EXPERIMENTAL_FEATURES
size_t size = 0;
const size_t incr = 2 + (data_size / 20);
while (size < data_size) {
size_t next_size = size + (rand() % incr);
if (next_size > data_size) next_size = data_size;
status = WebPIUpdate(idec, data, next_size);
if (status != VP8_STATUS_OK && status != VP8_STATUS_SUSPENDED) break;
size = next_size;
}
#else
status = WebPIUpdate(idec, data, data_size);
#endif
WebPIDelete(idec);
}
}
if (verbose) {
const double decode_time = StopwatchReadAndReset(&stop_watch);
fprintf(stderr, "Time to decode picture: %.3fs\n", decode_time);
}
return status;
}
// -----------------------------------------------------------------------------
void ExUtilCopyPlane(const uint8_t* src, int src_stride,
uint8_t* dst, int dst_stride, int width, int height) {
while (height-- > 0) {
memcpy(dst, src, width * sizeof(*dst));
src += src_stride;
dst += dst_stride;
}
}
// -----------------------------------------------------------------------------

61
imageio/example_util.h
View File

@ -13,8 +13,7 @@
#ifndef WEBP_IMAGEIO_EXAMPLE_UTIL_H_
#define WEBP_IMAGEIO_EXAMPLE_UTIL_H_
#include <stdio.h>
#include "webp/decode.h"
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
@ -30,64 +29,6 @@ uint32_t ExUtilGetUInt(const char* const v, int base, int* const error);
int ExUtilGetInt(const char* const v, int base, int* const error);
float ExUtilGetFloat(const char* const v, int* const error);
//------------------------------------------------------------------------------
// File I/O
// Reopen file in binary (O_BINARY) mode.
// Returns 'file' on success, NULL otherwise.
FILE* ExUtilSetBinaryMode(FILE* file);
// Allocates storage for entire file 'file_name' and returns contents and size
// in 'data' and 'data_size'. Returns 1 on success, 0 otherwise. '*data' should
// be deleted using free().
// If 'file_name' is NULL or equal to "-", input is read from stdin by calling
// the function ExUtilReadFromStdin().
int ExUtilReadFile(const char* const file_name,
const uint8_t** data, size_t* data_size);
// Same as ExUtilReadFile(), but reads until EOF from stdin instead.
int ExUtilReadFromStdin(const uint8_t** data, size_t* data_size);
// Write a data segment into a file named 'file_name'. Returns true if ok.
// If 'file_name' is NULL or equal to "-", output is written to stdout.
int ExUtilWriteFile(const char* const file_name,
const uint8_t* data, size_t data_size);
//------------------------------------------------------------------------------
// Copy width x height pixels from 'src' to 'dst' honoring the strides.
void ExUtilCopyPlane(const uint8_t* src, int src_stride,
uint8_t* dst, int dst_stride, int width, int height);
//------------------------------------------------------------------------------
// WebP decoding
// Prints an informative error message regarding decode failure of 'in_file'.
// 'status' is treated as a VP8StatusCode and if valid will be printed as a
// text string.
void ExUtilPrintWebPError(const char* const in_file, int status);
// Reads a WebP from 'in_file', returning the contents and size in 'data' and
// 'data_size'. If not NULL, 'bitstream' is populated using WebPGetFeatures().
// Returns true on success.
int ExUtilLoadWebP(const char* const in_file,
const uint8_t** data, size_t* data_size,
WebPBitstreamFeatures* bitstream);
// Decodes the WebP contained in 'data'.
// 'config' is a structure previously initialized by WebPInitDecoderConfig().
// 'config->output' should have the desired colorspace selected. 'verbose' will
// cause decode timing to be reported.
// Returns the decoder status. On success 'config->output' will contain the
// decoded picture.
VP8StatusCode ExUtilDecodeWebP(const uint8_t* const data, size_t data_size,
int verbose, WebPDecoderConfig* const config);
// Same as ExUtilDecodeWebP(), but using the incremental decoder.
VP8StatusCode ExUtilDecodeWebPIncremental(
const uint8_t* const data, size_t data_size,
int verbose, WebPDecoderConfig* const config);
#ifdef __cplusplus
} // extern "C"
#endif

136
imageio/imageio_util.c Normal file
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@ -0,0 +1,136 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Utility functions used by the image decoders.
//
#include "./imageio_util.h"
#if defined(_WIN32)
#include <fcntl.h> // for _O_BINARY
#include <io.h> // for _setmode()
#endif
#include <stdlib.h>
#include <string.h>
// -----------------------------------------------------------------------------
// File I/O
FILE* ExUtilSetBinaryMode(FILE* file) {
#if defined(_WIN32)
if (_setmode(_fileno(file), _O_BINARY) == -1) {
fprintf(stderr, "Failed to reopen file in O_BINARY mode.\n");
return NULL;
}
#endif
return file;
}
int ExUtilReadFromStdin(const uint8_t** data, size_t* data_size) {
static const size_t kBlockSize = 16384; // default initial size
size_t max_size = 0;
size_t size = 0;
uint8_t* input = NULL;
if (data == NULL || data_size == NULL) return 0;
*data = NULL;
*data_size = 0;
if (!ExUtilSetBinaryMode(stdin)) return 0;
while (!feof(stdin)) {
// We double the buffer size each time and read as much as possible.
const size_t extra_size = (max_size == 0) ? kBlockSize : max_size;
void* const new_data = realloc(input, max_size + extra_size);
if (new_data == NULL) goto Error;
input = (uint8_t*)new_data;
max_size += extra_size;
size += fread(input + size, 1, extra_size, stdin);
if (size < max_size) break;
}
if (ferror(stdin)) goto Error;
*data = input;
*data_size = size;
return 1;
Error:
free(input);
fprintf(stderr, "Could not read from stdin\n");
return 0;
}
int ExUtilReadFile(const char* const file_name,
const uint8_t** data, size_t* data_size) {
int ok;
void* file_data;
size_t file_size;
FILE* in;
const int from_stdin = (file_name == NULL) || !strcmp(file_name, "-");
if (from_stdin) return ExUtilReadFromStdin(data, data_size);
if (data == NULL || data_size == NULL) return 0;
*data = NULL;
*data_size = 0;
in = fopen(file_name, "rb");
if (in == NULL) {
fprintf(stderr, "cannot open input file '%s'\n", file_name);
return 0;
}
fseek(in, 0, SEEK_END);
file_size = ftell(in);
fseek(in, 0, SEEK_SET);
file_data = malloc(file_size);
if (file_data == NULL) return 0;
ok = (fread(file_data, file_size, 1, in) == 1);
fclose(in);
if (!ok) {
fprintf(stderr, "Could not read %d bytes of data from file %s\n",
(int)file_size, file_name);
free(file_data);
return 0;
}
*data = (uint8_t*)file_data;
*data_size = file_size;
return 1;
}
int ExUtilWriteFile(const char* const file_name,
const uint8_t* data, size_t data_size) {
int ok;
FILE* out;
const int to_stdout = (file_name == NULL) || !strcmp(file_name, "-");
if (data == NULL) {
return 0;
}
out = to_stdout ? stdout : fopen(file_name, "wb");
if (out == NULL) {
fprintf(stderr, "Error! Cannot open output file '%s'\n", file_name);
return 0;
}
ok = (fwrite(data, data_size, 1, out) == 1);
if (out != stdout) fclose(out);
return ok;
}
// -----------------------------------------------------------------------------
void ExUtilCopyPlane(const uint8_t* src, int src_stride,
uint8_t* dst, int dst_stride, int width, int height) {
while (height-- > 0) {
memcpy(dst, src, width * sizeof(*dst));
src += src_stride;
dst += dst_stride;
}
}
// -----------------------------------------------------------------------------

56
imageio/imageio_util.h Normal file
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@ -0,0 +1,56 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Utility functions used by the image decoders.
//
#ifndef WEBP_IMAGEIO_IMAGEIO_UTIL_H_
#define WEBP_IMAGEIO_IMAGEIO_UTIL_H_
#include <stdio.h>
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
//------------------------------------------------------------------------------
// File I/O
// Reopen file in binary (O_BINARY) mode.
// Returns 'file' on success, NULL otherwise.
FILE* ExUtilSetBinaryMode(FILE* file);
// Allocates storage for entire file 'file_name' and returns contents and size
// in 'data' and 'data_size'. Returns 1 on success, 0 otherwise. '*data' should
// be deleted using free().
// If 'file_name' is NULL or equal to "-", input is read from stdin by calling
// the function ExUtilReadFromStdin().
int ExUtilReadFile(const char* const file_name,
const uint8_t** data, size_t* data_size);
// Same as ExUtilReadFile(), but reads until EOF from stdin instead.
int ExUtilReadFromStdin(const uint8_t** data, size_t* data_size);
// Write a data segment into a file named 'file_name'. Returns true if ok.
// If 'file_name' is NULL or equal to "-", output is written to stdout.
int ExUtilWriteFile(const char* const file_name,
const uint8_t* data, size_t data_size);
//------------------------------------------------------------------------------
// Copy width x height pixels from 'src' to 'dst' honoring the strides.
void ExUtilCopyPlane(const uint8_t* src, int src_stride,
uint8_t* dst, int dst_stride, int width, int height);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_IMAGEIO_UTIL_H_

117
imageio/webpdec.c
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@ -16,9 +16,124 @@
#include "webp/decode.h"
#include "webp/encode.h"
#include "./example_util.h"
#include "../examples/stopwatch.h"
#include "./imageio_util.h"
#include "./metadata.h"
//------------------------------------------------------------------------------
// WebP decoding
static const char* const kStatusMessages[VP8_STATUS_NOT_ENOUGH_DATA + 1] = {
"OK", "OUT_OF_MEMORY", "INVALID_PARAM", "BITSTREAM_ERROR",
"UNSUPPORTED_FEATURE", "SUSPENDED", "USER_ABORT", "NOT_ENOUGH_DATA"
};
static void PrintAnimationWarning(const WebPDecoderConfig* const config) {
if (config->input.has_animation) {
fprintf(stderr,
"Error! Decoding of an animated WebP file is not supported.\n"
" Use webpmux to extract the individual frames or\n"
" vwebp to view this image.\n");
}
}
void ExUtilPrintWebPError(const char* const in_file, int status) {
fprintf(stderr, "Decoding of %s failed.\n", in_file);
fprintf(stderr, "Status: %d", status);
if (status >= VP8_STATUS_OK && status <= VP8_STATUS_NOT_ENOUGH_DATA) {
fprintf(stderr, "(%s)", kStatusMessages[status]);
}
fprintf(stderr, "\n");
}
int ExUtilLoadWebP(const char* const in_file,
const uint8_t** data, size_t* data_size,
WebPBitstreamFeatures* bitstream) {
VP8StatusCode status;
WebPBitstreamFeatures local_features;
if (!ExUtilReadFile(in_file, data, data_size)) return 0;
if (bitstream == NULL) {
bitstream = &local_features;
}
status = WebPGetFeatures(*data, *data_size, bitstream);
if (status != VP8_STATUS_OK) {
free((void*)*data);
*data = NULL;
*data_size = 0;
ExUtilPrintWebPError(in_file, status);
return 0;
}
return 1;
}
//------------------------------------------------------------------------------
VP8StatusCode ExUtilDecodeWebP(const uint8_t* const data, size_t data_size,
int verbose, WebPDecoderConfig* const config) {
Stopwatch stop_watch;
VP8StatusCode status = VP8_STATUS_OK;
if (config == NULL) return VP8_STATUS_INVALID_PARAM;
PrintAnimationWarning(config);
StopwatchReset(&stop_watch);
// Decoding call.
status = WebPDecode(data, data_size, config);
if (verbose) {
const double decode_time = StopwatchReadAndReset(&stop_watch);
fprintf(stderr, "Time to decode picture: %.3fs\n", decode_time);
}
return status;
}
VP8StatusCode ExUtilDecodeWebPIncremental(
const uint8_t* const data, size_t data_size,
int verbose, WebPDecoderConfig* const config) {
Stopwatch stop_watch;
VP8StatusCode status = VP8_STATUS_OK;
if (config == NULL) return VP8_STATUS_INVALID_PARAM;
PrintAnimationWarning(config);
StopwatchReset(&stop_watch);
// Decoding call.
{
WebPIDecoder* const idec = WebPIDecode(data, data_size, config);
if (idec == NULL) {
fprintf(stderr, "Failed during WebPINewDecoder().\n");
return VP8_STATUS_OUT_OF_MEMORY;
} else {
#ifdef WEBP_EXPERIMENTAL_FEATURES
size_t size = 0;
const size_t incr = 2 + (data_size / 20);
while (size < data_size) {
size_t next_size = size + (rand() % incr);
if (next_size > data_size) next_size = data_size;
status = WebPIUpdate(idec, data, next_size);
if (status != VP8_STATUS_OK && status != VP8_STATUS_SUSPENDED) break;
size = next_size;
}
#else
status = WebPIUpdate(idec, data, data_size);
#endif
WebPIDelete(idec);
}
}
if (verbose) {
const double decode_time = StopwatchReadAndReset(&stop_watch);
fprintf(stderr, "Time to decode picture: %.3fs\n", decode_time);
}
return status;
}
// -----------------------------------------------------------------------------
int ReadWebP(const uint8_t* const data, size_t data_size,
WebPPicture* const pic,
int keep_alpha, Metadata* const metadata) {

33
imageio/webpdec.h
View File

@ -12,7 +12,7 @@
#ifndef WEBP_IMAGEIO_WEBPDEC_H_
#define WEBP_IMAGEIO_WEBPDEC_H_
#include "webp/types.h"
#include "webp/decode.h"
#ifdef __cplusplus
extern "C" {
@ -21,6 +21,37 @@ extern "C" {
struct Metadata;
struct WebPPicture;
//------------------------------------------------------------------------------
// WebP decoding
// Prints an informative error message regarding decode failure of 'in_file'.
// 'status' is treated as a VP8StatusCode and if valid will be printed as a
// text string.
void ExUtilPrintWebPError(const char* const in_file, int status);
// Reads a WebP from 'in_file', returning the contents and size in 'data' and
// 'data_size'. If not NULL, 'bitstream' is populated using WebPGetFeatures().
// Returns true on success.
int ExUtilLoadWebP(const char* const in_file,
const uint8_t** data, size_t* data_size,
WebPBitstreamFeatures* bitstream);
// Decodes the WebP contained in 'data'.
// 'config' is a structure previously initialized by WebPInitDecoderConfig().
// 'config->output' should have the desired colorspace selected. 'verbose' will
// cause decode timing to be reported.
// Returns the decoder status. On success 'config->output' will contain the
// decoded picture.
VP8StatusCode ExUtilDecodeWebP(const uint8_t* const data, size_t data_size,
int verbose, WebPDecoderConfig* const config);
// Same as ExUtilDecodeWebP(), but using the incremental decoder.
VP8StatusCode ExUtilDecodeWebPIncremental(
const uint8_t* const data, size_t data_size,
int verbose, WebPDecoderConfig* const config);
//------------------------------------------------------------------------------
// Reads a WebP from 'in_file', returning the decoded output in 'pic'.
// Output is RGBA or YUVA, depending on pic->use_argb value.
// If 'keep_alpha' is true and the WebP has an alpha channel, the output is RGBA

2
imageio/wicdec.c
View File

@ -33,7 +33,7 @@
#include <wincodec.h>
#include "webp/encode.h"
#include "./example_util.h"
#include "./imageio_util.h"
#include "./metadata.h"
#define IFS(fn) \

30
makefile.unix
View File

@ -228,6 +228,9 @@ EX_UTIL_OBJS = \
GIFDEC_OBJS = \
examples/gifdec.o \
IMAGE_UTIL_OBJS = \
imageio/imageio_util.o \
MUX_OBJS = \
src/mux/anim_encode.o \
src/mux/muxedit.o \
@ -307,7 +310,8 @@ HDRS = \
src/webp/format_constants.h \
$(HDRS_INSTALLED) \
OUT_LIBS = imageio/libexample_util.a imageio/libimagedec.a src/libwebpdecoder.a
OUT_LIBS = imageio/libexample_util.a imageio/libimageio_util.a
OUT_LIBS += imageio/libimagedec.a src/libwebpdecoder.a
OUT_LIBS += src/libwebp.a
EXTRA_LIB = extras/libwebpextras.a
OUT_EXAMPLES = examples/cwebp examples/dwebp
@ -344,6 +348,7 @@ examples/libgifdec.a: $(GIFDEC_OBJS)
extras/libwebpextras.a: $(LIBWEBPEXTRA_OBJS)
imageio/libexample_util.a: $(EX_UTIL_OBJS)
imageio/libimagedec.a: $(EX_FORMAT_DEC_OBJS)
imageio/libimageio_util.a: $(IMAGE_UTIL_OBJS)
src/libwebpdecoder.a: $(LIBWEBPDECODER_OBJS)
src/libwebp.a: $(LIBWEBP_OBJS)
src/mux/libwebpmux.a: $(LIBWEBPMUX_OBJS)
@ -361,34 +366,35 @@ examples/webpmux: examples/webpmux.o
examples/anim_diff: examples/libanim_util.a examples/libgifdec.a
examples/anim_diff: src/demux/libwebpdemux.a imageio/libexample_util.a
examples/anim_diff: src/libwebp.a
examples/anim_diff: imageio/libimageio_util.a src/libwebp.a
examples/anim_diff: EXTRA_LIBS += $(GIF_LIBS)
examples/anim_diff: EXTRA_FLAGS += -DWEBP_HAVE_GIF
examples/cwebp: imageio/libexample_util.a imageio/libimagedec.a
examples/cwebp: src/libwebp.a
examples/cwebp: imageio/libexample_util.a imageio/libimageio_util.a
examples/cwebp: imageio/libimagedec.a src/libwebp.a
examples/cwebp: EXTRA_LIBS += $(CWEBP_LIBS)
examples/dwebp: imageio/libexample_util.a src/libwebpdecoder.a
examples/dwebp: imageio/libexample_util.a imageio/libimageio_util.a
examples/dwebp: imageio/libimagedec.a src/libwebp.a
examples/dwebp: EXTRA_LIBS += $(DWEBP_LIBS)
examples/gif2webp: imageio/libexample_util.a examples/libgifdec.a
examples/gif2webp: src/mux/libwebpmux.a src/libwebp.a
examples/gif2webp: imageio/libexample_util.a imageio/libimageio_util.a
examples/gif2webp: examples/libgifdec.a src/mux/libwebpmux.a src/libwebp.a
examples/gif2webp: EXTRA_LIBS += $(GIF_LIBS)
examples/gif2webp: EXTRA_FLAGS += -DWEBP_HAVE_GIF
examples/vwebp: imageio/libexample_util.a src/demux/libwebpdemux.a
examples/vwebp: src/libwebp.a
examples/vwebp: imageio/libimageio_util.a src/libwebp.a
examples/vwebp: EXTRA_LIBS += $(GL_LIBS)
examples/vwebp: EXTRA_FLAGS += -DWEBP_HAVE_GL
examples/webpmux: imageio/libexample_util.a src/mux/libwebpmux.a
examples/webpmux: src/libwebpdecoder.a
examples/webpmux: imageio/libexample_util.a imageio/libimageio_util.a
examples/webpmux: src/mux/libwebpmux.a src/libwebpdecoder.a
extras/get_disto: extras/get_disto.o
extras/get_disto: imageio/libimagedec.a
extras/get_disto: imageio/libexample_util.a
extras/get_disto: imageio/libimageio_util.a
extras/get_disto: src/libwebp.a $(EXTRA_LIB)
extras/get_disto: EXTRA_LIBS += $(CWEBP_LIBS)
extras/webp_quality: extras/webp_quality.o
extras/webp_quality: imageio/libimagedec.a
extras/webp_quality: imageio/libexample_util.a
extras/webp_quality: imageio/libimageio_util.a
extras/webp_quality: src/libwebp.a $(EXTRA_LIB)
extras/get_disto: EXTRA_LIBS += $(CWEBP_LIBS)