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WebPEncode: clear stats at the start of encode

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also relocate user_data from WebPAuxStats to the WebPPicture struct to
make clearing easier while placing it closer to the progress hook with
which it's used.
prior to this change some spurious lossless data could be reported in
the lossy (sans alpha) encoding case. additionally user_data could be
lost during lossless encoding.

Change-Id: I929fae3dfde4d445ff81bbaad51445ea586dd80b
This commit is contained in:
James Zern
2012-07-27 19:53:16 -07:00
parent a7cc729126
commit 475d87d767
3 changed files with 7 additions and 5 deletions
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2
src/enc/webpenc.c
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@ -344,6 +344,8 @@ int WebPEncode(const WebPConfig* config, WebPPicture* pic) {
if (pic->width > WEBP_MAX_DIMENSION || pic->height > WEBP_MAX_DIMENSION)
return WebPEncodingSetError(pic, VP8_ENC_ERROR_BAD_DIMENSION);
if (pic->stats != NULL) memset(pic->stats, 0, sizeof(*pic->stats));
if (!config->lossless) {
VP8Encoder* enc = NULL;
if (pic->y == NULL || pic->u == NULL || pic->v == NULL) {