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// 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.
// -----------------------------------------------------------------------------
//
// Simple SDL-based WebP file viewer.
// Does not support animation, just static images.
//
// Press 'q' to exit.
//
// Author: James Zern (jzern@google.com)
#include <stdio.h>
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#if defined(WEBP_HAVE_SDL)
#include "webp_to_sdl.h"
#include "webp/decode.h"
#include "imageio/imageio_util.h"
#if defined(WEBP_HAVE_JUST_SDL_H)
#include <SDL.h>
#else
#include <SDL/SDL.h>
#endif
static void ProcessEvents(void) {
int done = 0;
SDL_Event event;
while (!done && SDL_WaitEvent(&event)) {
switch (event.type) {
case SDL_KEYUP:
switch (event.key.keysym.sym) {
case SDLK_q: done = 1; break;
default: break;
}
break;
default: break;
}
}
}
int main(int argc, char* argv[]) {
int c;
int ok = 0;
for (c = 1; c < argc; ++c) {
const char* file = NULL;
const uint8_t* webp = NULL;
size_t webp_size = 0;
if (!strcmp(argv[c], "-h")) {
printf("Usage: %s [-h] image.webp [more_files.webp...]\n", argv[0]);
return 0;
} else {
file = argv[c];
}
if (file == NULL) continue;
if (!ImgIoUtilReadFile(file, &webp, &webp_size)) {
fprintf(stderr, "Error opening file: %s\n", file);
goto Error;
}
if (webp_size != (size_t)(int)webp_size) {
fprintf(stderr, "File too large.\n");
goto Error;
}
ok = WebpToSDL((const char*)webp, (int)webp_size);
free((void*)webp);
if (!ok) {
fprintf(stderr, "Error decoding file %s\n", file);
goto Error;
}
ProcessEvents();
}
ok = 1;
Error:
SDL_Quit();
return ok ? 0 : 1;
}
#else // !WEBP_HAVE_SDL
int main(int argc, const char *argv[]) {
fprintf(stderr, "SDL support not enabled in %s.\n", argv[0]);
(void)argc;
return 0;
}
#endif