static void SaveOutput(const WebPDecBuffer* const buffer,
OutputFileFormat format, const char* const out_file) {
FILE* fout = NULL;
int needs_open_file = 1;
int ok = 1;
Stopwatch stop_watch;
if (verbose)
StopwatchReadAndReset(&stop_watch);
#ifdef HAVE_WINCODEC_H
needs_open_file = (format != PNG);
#endif
if (needs_open_file) {
fout = fopen(out_file, "wb");
if (!fout) {
fprintf(stderr, "Error opening output file %s\n", out_file);
return;
}
}
if (format == PNG) {
#ifdef HAVE_WINCODEC_H
ok &= WritePNG(out_file, buffer);
#else
ok &= WritePNG(fout, buffer);
#endif
} else if (format == PAM) {
ok &= WritePPM(fout, buffer, 1);
} else if (format == PPM) {
ok &= WritePPM(fout, buffer, 0);
} else if (format == PGM || format == YUV) {
ok &= WritePGMOrYUV(fout, buffer, format);
} else if (format == ALPHA_PLANE_ONLY) {
ok &= WriteAlphaPlane(fout, buffer);
}
if (fout) {
fclose(fout);
}
if (ok) {
printf("Saved file %s\n", out_file);
if (verbose) {
const double write_time = StopwatchReadAndReset(&stop_watch);
printf("Time to write output: %.3fs\n", write_time);
}
} else {
fprintf(stderr, "Error writing file %s !!\n", out_file);
}
}
VP8StatusCode DecodeWebP(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 DecodeWebPIncremental(
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;
}
