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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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21
examples/cwebp.c
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@ -104,7 +104,7 @@ static int ReadYUV(FILE* in_file, WebPPicture* const pic) {
{ \
hr = (fn); \
if (FAILED(hr) && verbose) \
printf(#fn " failed %08x\n", hr); \
fprintf(stderr, #fn " failed %08x\n", hr); \
} \
} while (0)
@ -118,7 +118,7 @@ static HRESULT OpenInputStream(const char* filename, IStream** ppStream) {
HRESULT hr = S_OK;
IFS(SHCreateStreamOnFileA(filename, STGM_READ, ppStream));
if (FAILED(hr))
printf("Error opening input file %s (%08x)\n", filename, hr);
fprintf(stderr, "Error opening input file %s (%08x)\n", filename, hr);
return hr;
}
@ -148,9 +148,10 @@ static HRESULT ReadPictureWithWIC(const char* filename,
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?). Most formats not available.\n");
printf("Use -s for the available YUV input.\n");
fprintf(stderr,
"Couldn't access Windows Imaging Component (are you running "
"Windows XP SP3 or newer?). Most formats not available. "
"Use -s for the available YUV input.\n");
}
// Prepare for image decoding.
IFS(OpenInputStream(filename, &pStream));
@ -158,7 +159,7 @@ static HRESULT ReadPictureWithWIC(const char* filename,
WICDecodeMetadataCacheOnDemand, &pDecoder));
IFS(IWICBitmapDecoder_GetFrameCount(pDecoder, &frameCount));
if (SUCCEEDED(hr) && frameCount == 0) {
printf("No frame found in input file.\n");
fprintf(stderr, "No frame found in input file.\n");
hr = E_FAIL;
}
IFS(IWICBitmapDecoder_GetFrame(pDecoder, 0, &pFrame));
@ -333,8 +334,8 @@ static int ReadJPEG(FILE* in_file, WebPPicture* const pic) {
static int ReadJPEG(FILE* in_file, WebPPicture* const pic) {
(void)in_file;
(void)pic;
printf("JPEG support not compiled. Please install the libjpeg development "
"package before building.\n");
fprintf(stderr, "JPEG support not compiled. Please install the libjpeg "
"development package before building.\n");
return 0;
}
#endif
@ -433,8 +434,8 @@ static int ReadPNG(FILE* in_file, WebPPicture* const pic, int keep_alpha) {
(void)in_file;
(void)pic;
(void)keep_alpha;
printf("PNG support not compiled. Please install the libpng development "
"package before building.\n");
fprintf(stderr, "PNG support not compiled. Please install the libpng "
"development package before building.\n");
return 0;
}
#endif