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WebPMuxGetImage: allow image param to be NULL

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but not both alpha & image

Change-Id: I6822a740de7577eedcbe7529382aa2c020d1e8e4
This commit is contained in:
James Zern
2012-02-16 17:41:29 -08:00
parent 4be52f4a65
commit 135e8b1942
2 changed files with 10 additions and 7 deletions
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4
src/webp/mux.h
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@ -148,8 +148,8 @@ WEBP_EXTERN(WebPMuxError) WebPMuxSetImage(WebPMux* const mux,
// image - (out) the image data
// alpha - (out) the alpha data of the image (if present)
// Returns:
// WEBP_MUX_INVALID_ARGUMENT - if either mux or image is NULL
// OR if mux contains animation/tiling.
// WEBP_MUX_INVALID_ARGUMENT - if either mux or both image & alpha are NULL
// OR mux contains animation/tiling.
// WEBP_MUX_NOT_FOUND - if image is not present in mux object.
// WEBP_MUX_OK - on success.
WEBP_EXTERN(WebPMuxError) WebPMuxGetImage(const WebPMux* const mux,