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Add GetCanvasSize() method to mux

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Change-Id: If910f5024f4c301a92e6c2e8ee9c315a103c5df7
This commit is contained in:
Urvang Joshi
2013-05-02 13:54:25 -07:00
parent 6393fe4b7c
commit fffefd18c3
6 changed files with 69 additions and 4 deletions
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23
src/webp/mux.h
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@ -51,7 +51,7 @@
extern "C" {
#endif
#define WEBP_MUX_ABI_VERSION 0x0100 // MAJOR(8b) + MINOR(8b)
#define WEBP_MUX_ABI_VERSION 0x0101 // MAJOR(8b) + MINOR(8b)
// Note: forward declaring enumerations is not allowed in (strict) C and C++,
// the types are left here for reference.
@ -303,7 +303,25 @@ WEBP_EXTERN(WebPMuxError) WebPMuxGetAnimationParams(
//------------------------------------------------------------------------------
// Misc Utilities.
// Gets the canvas size from the mux object.
// Note: This method assumes that VP8X chunk, if present, is up-to-date. That
// is, the mux object hasn't been modified since the last call to
// WebPMuxAssemble() or WebMuxCreate().
// Parameters:
// mux - (in) object from which the canvas size is to be fetched
// width - (out) canvas width
// height - (out) canvas height
// Returns:
// WEBP_MUX_INVALID_ARGUMENT - if mux, width or height is NULL
// WEBP_MUX_BAD_DATA - if VP8X/VP8/VP8L chunk or canvas size is invalid.
// WEBP_MUX_OK - on success.
WEBP_EXTERN(WebPMuxError) WebPMuxGetCanvasSize(const WebPMux* mux,
int* width, int* height);
// Gets the feature flags from the mux object.
// Note: This method assumes that VP8X chunk, if present, is up-to-date. That
// is, the mux object hasn't been modified since the last call to
// WebPMuxAssemble() or WebMuxCreate().
// Parameters:
// mux - (in) object from which the features are to be fetched
// flags - (out) the flags specifying which features are present in the
@ -311,8 +329,7 @@ WEBP_EXTERN(WebPMuxError) WebPMuxGetAnimationParams(
// Enum 'WebPFeatureFlags' can be used to test individual flag values.
// Returns:
// WEBP_MUX_INVALID_ARGUMENT - if mux or flags is NULL
// WEBP_MUX_NOT_FOUND - if VP8X chunk is not present in mux object.
// WEBP_MUX_BAD_DATA - if VP8X chunk in mux is invalid.
// WEBP_MUX_BAD_DATA - if VP8X/VP8L chunk in mux is invalid.
// WEBP_MUX_OK - on success.
WEBP_EXTERN(WebPMuxError) WebPMuxGetFeatures(const WebPMux* mux,
uint32_t* flags);