mirror of
https://github.com/webmproject/libwebp.git
synced 2024-11-20 04:18:26 +01:00
f66f94ef36
dumps frames to PNG, PAM or TIFF files. Change-Id: I86a4d7e235cb7040cf5bbcae28270cb5a84be087
105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
// Copyright 2017 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.
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// Decodes an animated WebP file and dumps the decoded frames as PNG or TIFF.
|
|
//
|
|
// Author: Skal (pascal.massimino@gmail.com)
|
|
|
|
#include <stdio.h>
|
|
#include <string.h> // for 'strcmp'.
|
|
|
|
#include "./anim_util.h"
|
|
#include "webp/decode.h"
|
|
#include "../imageio/image_enc.h"
|
|
|
|
#if defined(_MSC_VER) && _MSC_VER < 1900
|
|
#define snprintf _snprintf
|
|
#endif
|
|
|
|
static void Help(void) {
|
|
printf("Usage: anim_dump [options] files...\n");
|
|
printf("\nOptions:\n");
|
|
printf(" -folder <string> .... dump folder (default: '.')\n");
|
|
printf(" -prefix <string> .... prefix for dumped frames "
|
|
"(default: 'dump_')\n");
|
|
printf(" -tiff ............... save frames as TIFF\n");
|
|
printf(" -pam ................ save frames as PAM\n");
|
|
}
|
|
|
|
int main(int argc, const char* argv[]) {
|
|
int error = 0;
|
|
const char* dump_folder = ".";
|
|
const char* prefix = "dump_";
|
|
const char* suffix = "png";
|
|
WebPOutputFileFormat format = PNG;
|
|
int c;
|
|
|
|
if (argc < 2) {
|
|
Help();
|
|
return -1;
|
|
}
|
|
|
|
for (c = 1; !error && c < argc; ++c) {
|
|
if (!strcmp(argv[c], "-folder")) {
|
|
if (c + 1 == argc) {
|
|
fprintf(stderr, "missing argument after option '%s'\n", argv[c]);
|
|
error = 1;
|
|
break;
|
|
}
|
|
dump_folder = argv[++c];
|
|
} else if (!strcmp(argv[c], "-prefix")) {
|
|
if (c + 1 == argc) {
|
|
fprintf(stderr, "missing argument after option '%s'\n", argv[c]);
|
|
error = 1;
|
|
break;
|
|
}
|
|
prefix = argv[++c];
|
|
} else if (!strcmp(argv[c], "-tiff")) {
|
|
format = TIFF;
|
|
suffix = "tiff";
|
|
} else if (!strcmp(argv[c], "-pam")) {
|
|
format = PAM;
|
|
suffix = "pam";
|
|
} else {
|
|
uint32_t i;
|
|
AnimatedImage image;
|
|
const char* const file = argv[c];
|
|
memset(&image, 0, sizeof(image));
|
|
printf("Decoding file: %s as %s/%sxxxx.%s\n",
|
|
file, dump_folder, prefix, suffix);
|
|
if (!ReadAnimatedImage(file, &image, 0, NULL)) {
|
|
fprintf(stderr, "Error decoding file: %s\n Aborting.\n", file);
|
|
error = 1;
|
|
break;
|
|
}
|
|
for (i = 0; !error && i < image.num_frames; ++i) {
|
|
char out_file[1024];
|
|
WebPDecBuffer buffer;
|
|
WebPInitDecBuffer(&buffer);
|
|
buffer.colorspace = MODE_RGBA;
|
|
buffer.is_external_memory = 1;
|
|
buffer.width = image.canvas_width;
|
|
buffer.height = image.canvas_height;
|
|
buffer.u.RGBA.rgba = image.frames[i].rgba;
|
|
buffer.u.RGBA.stride = buffer.width * sizeof(uint32_t);
|
|
buffer.u.RGBA.size = buffer.u.RGBA.stride * buffer.height;
|
|
snprintf(out_file, sizeof(out_file), "%s/%s%.4d.%s",
|
|
dump_folder, prefix, i, suffix);
|
|
if (!WebPSaveImage(&buffer, format, out_file)) {
|
|
fprintf(stderr, "Error while saving image '%s'\n", out_file);
|
|
error = 1;
|
|
}
|
|
WebPFreeDecBuffer(&buffer);
|
|
}
|
|
ClearAnimatedImage(&image);
|
|
}
|
|
}
|
|
return error ? 1 : 0;
|
|
}
|