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examples: logging updates

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- send errors to stderr
- send help to stdout
- add image size to webpmux -info output and send to stdout
- correct webpmux exit values

Change-Id: Ifd8e8493aab33a82765f7b7903cef345d96da9ae
This commit is contained in:
James Zern
2012-01-24 12:46:46 -08:00
parent 6c14aaddc4
commit 974aaff360
5 changed files with 117 additions and 123 deletions
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26
examples/dwebp.c
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@ -71,7 +71,7 @@ typedef enum {
{ \
hr = (fn); \
if (FAILED(hr) && verbose) \
printf(#fn " failed %08x\n", hr); \
fprintf(stderr, #fn " failed %08x\n", hr); \
} \
} while (0)
@ -86,7 +86,7 @@ static HRESULT CreateOutputStream(const char* out_file_name,
HRESULT hr = S_OK;
IFS(SHCreateStreamOnFileA(out_file_name, STGM_WRITE | STGM_CREATE, ppStream));
if (FAILED(hr))
printf("Error opening output file %s (%08x)\n", out_file_name, hr);
fprintf(stderr, "Error opening output file %s (%08x)\n", out_file_name, hr);
return hr;
}
@ -106,9 +106,10 @@ static HRESULT WriteUsingWIC(const char* out_file_name, REFGUID container_guid,
CLSCTX_INPROC_SERVER, MAKE_REFGUID(IID_IWICImagingFactory),
(LPVOID*)&pFactory));
if (hr == REGDB_E_CLASSNOTREG) {
printf("Couldn't access Windows Imaging Component (are you running \n");
printf("Windows XP SP3 or newer?). PNG support not available.\n");
printf("Use -ppm or -pgm for available PPM and PGM formats.\n");
fprintf(stderr,
"Couldn't access Windows Imaging Component (are you running "
"Windows XP SP3 or newer?). PNG support not available. "
"Use -ppm or -pgm for available PPM and PGM formats.\n");
}
IFS(CreateOutputStream(out_file_name, &pStream));
IFS(IWICImagingFactory_CreateEncoder(pFactory, container_guid, NULL,
@ -189,15 +190,12 @@ static int WritePNG(FILE* out_file, const WebPDecBuffer* const buffer) {
return 1;
}
#else // !HAVE_WINCODEC_H && !WEBP_HAVE_PNG
typedef uint32_t png_uint_32;
static int WritePNG(FILE* out_file, const WebPDecBuffer* const buffer) {
(void)out_file;
(void)buffer;
printf("PNG support not compiled. Please install the libpng development "
"package before building.\n");
printf("You can run with -ppm flag to decode in PPM format.\n");
fprintf(stderr, "PNG support not compiled. Please install the libpng "
"development package before building.\n");
fprintf(stderr, "You can run with -ppm flag to decode in PPM format.\n");
return 0;
}
#endif
@ -373,7 +371,7 @@ int main(int argc, const char *argv[]) {
} else if (!strcmp(argv[c], "-version")) {
const int version = WebPGetDecoderVersion();
printf("%d.%d.%d\n",
(version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
(version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
return 0;
} else if (!strcmp(argv[c], "-pgm")) {
format = PGM;
@ -396,7 +394,7 @@ int main(int argc, const char *argv[]) {
VP8GetCPUInfo = NULL;
#endif
} else if (argv[c][0] == '-') {
printf("Unknown option '%s'\n", argv[c]);
fprintf(stderr, "Unknown option '%s'\n", argv[c]);
Help();
return -1;
} else {
@ -405,7 +403,7 @@ int main(int argc, const char *argv[]) {
}
if (in_file == NULL) {
printf("missing input file!!\n");
fprintf(stderr, "missing input file!!\n");
Help();
return -1;
}