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add missing YUVA->ARGB automatic conversion in WebPEncode()

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user can now call WebPEncode() with any YUVA or ARGB format, for
lossy or lossless compression

also: simplified error reporting, which is done in WebPPictureARGBToYUVA()
and WebPPictureYUVAToARGB()

Change-Id: Ifb68909217175bcf5a050e5c68d06de9849468f7
(cherry picked from commit 07d87bda1b)
This commit is contained in:
Pascal Massimino 2013-03-29 04:28:49 -07:00 committed by James Zern
parent 403bfe820c
commit 68111ab02f
1 changed files with 6 additions and 7 deletions
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13
src/enc/webpenc.c
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@ -374,11 +374,8 @@ int WebPEncode(const WebPConfig* config, WebPPicture* pic) {
if (!config->lossless) {
VP8Encoder* enc = NULL;
if (pic->y == NULL || pic->u == NULL || pic->v == NULL) {
if (pic->argb != NULL) {
if (!WebPPictureARGBToYUVA(pic, WEBP_YUV420)) return 0;
} else {
return WebPEncodingSetError(pic, VP8_ENC_ERROR_NULL_PARAMETER);
}
// Make sure we have YUVA samples.
if (!WebPPictureARGBToYUVA(pic, WEBP_YUV420)) return 0;
}
enc = InitVP8Encoder(config, pic);
@ -405,8 +402,10 @@ int WebPEncode(const WebPConfig* config, WebPPicture* pic) {
}
ok &= DeleteVP8Encoder(enc); // must always be called, even if !ok
} else {
if (pic->argb == NULL)
return WebPEncodingSetError(pic, VP8_ENC_ERROR_NULL_PARAMETER);
// Make sure we have ARGB samples.
if (pic->argb == NULL && !WebPPictureYUVAToARGB(pic)) {
return 0;
}
ok = VP8LEncodeImage(config, pic); // Sets pic->error in case of problem.
}