dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2024-12-27 06:08:21 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add -incremental option to dwebp

Browse Source 
useful for testing. Not listed in the man or README, since
it's only useful for testing the incremental decoding
(e.g. measuring the timing difference compared to non-incremental)

Change-Id: I8df8046e031d21006242babb5bcac09f8ff9f710
This commit is contained in:
skal 2013-09-19 13:20:45 +02:00
parent 54b8e3f6e2
commit 5cd43e4316
1 changed files with 21 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
examples/dwebp.c
View File

@ -559,6 +559,7 @@ static void Help(void) {
" -crop <x> <y> <w> <h> ... crop output with the given rectangle\n"
" -scale <w> <h> .......... scale the output (*after* any cropping)\n"
" -alpha ....... only save the alpha plane.\n"
" -incremental . use incremental decoding (useful for tests)\n"
" -h ....... this help message.\n"
" -v ....... verbose (e.g. print encoding/decoding times)\n"
#ifndef WEBP_DLL
@ -581,6 +582,7 @@ int main(int argc, const char *argv[]) {
WebPDecBuffer* const output_buffer = &config.output;
WebPBitstreamFeatures* const bitstream = &config.input;
OutputFileFormat format = PNG;
int incremental = 0;
int c;
if (!WebPInitDecoderConfig(&config)) {
@ -635,6 +637,8 @@ int main(int argc, const char *argv[]) {
} else if (!strcmp(argv[c], "-noasm")) {
VP8GetCPUInfo = NULL;
#endif
} else if (!strcmp(argv[c], "-incremental")) {
incremental = 1;
} else if (argv[c][0] == '-') {
fprintf(stderr, "Unknown option '%s'\n", argv[c]);
Help();
@ -706,7 +710,21 @@ int main(int argc, const char *argv[]) {
free((void*)data);
return -1;
}
status = WebPDecode(data, data_size, &config);
// Decoding call.
if (!incremental) {
status = WebPDecode(data, data_size, &config);
} else {
WebPIDecoder* const idec = WebPINewDecoder(output_buffer);
if (idec == NULL) {
fprintf(stderr, "Failed during WebPINewDecoder().\n");
status = VP8_STATUS_OUT_OF_MEMORY;
ok = 0;
} else {
status = WebPIUpdate(idec, data, data_size);
WebPIDelete(idec);
}
}
if (verbose) {
const double decode_time = StopwatchReadAndReset(&stop_watch);
@ -718,7 +736,7 @@ int main(int argc, const char *argv[]) {
if (!ok) {
fprintf(stderr, "Decoding of %s failed.\n", in_file);
fprintf(stderr, "Status: %d (%s)\n", status, kStatusMessages[status]);
return -1;
goto Exit;
}
}
@ -734,8 +752,8 @@ int main(int argc, const char *argv[]) {
fprintf(stderr, "Nothing written; "
"use -o flag to save the result as e.g. PNG.\n");
}
Exit:
WebPFreeDecBuffer(output_buffer);
return ok ? 0 : -1;
}