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probe input file and quick-check for WebP format.

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Error message is clearer that 'can't create demux object'.

Change-Id: Iec008601892f7cd8399e1948751747ac23305eef
(cherry picked from commit 830f72b7e9)
This commit is contained in:
Pascal Massimino 2013-06-10 05:46:22 -07:00 committed by James Zern
parent a2aed1d08c
commit f32097e0df
1 changed files with 5 additions and 0 deletions
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5
examples/vwebp.c
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@ -436,6 +436,11 @@ int main(int argc, char *argv[]) {
goto Error;
}
if (!WebPGetInfo(kParams.data.bytes, kParams.data.size, NULL, NULL)) {
fprintf(stderr, "Input file doesn't appear to be WebP format.\n");
goto Error;
}
kParams.dmux = WebPDemux(&kParams.data);
if (kParams.dmux == NULL) {
fprintf(stderr, "Could not create demuxing object!\n");