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Demux: Add option to get frame count using GetI()

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Also tweak the code for single image and fragmented image cases, so that
dmux->num_frames_ is always correct.

Change-Id: I31e6904222e4d96a54a0d8c8aa73d43b7a9094e7
This commit is contained in:
Urvang Joshi
2013-03-06 13:14:05 -08:00
parent 988b8f56b3
commit 068eba8d58
2 changed files with 14 additions and 7 deletions
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8
src/webp/demux.h
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@ -107,7 +107,11 @@ enum WebPFormatFeature {
WEBP_FF_CANVAS_WIDTH,
WEBP_FF_CANVAS_HEIGHT,
WEBP_FF_LOOP_COUNT,
WEBP_FF_BACKGROUND_COLOR
WEBP_FF_BACKGROUND_COLOR,
WEBP_FF_FRAME_COUNT // Number of frames present in the demux object.
// In case of a partial demux, this is the number of
// frames seen so far, with the last frame possibly
// being partial.
};
// Get the 'feature' value from the 'dmux'.
@ -121,7 +125,7 @@ WEBP_EXTERN(uint32_t) WebPDemuxGetI(
struct WebPIterator {
int frame_num;
int num_frames;
int num_frames; // equivalent to WEBP_FF_FRAME_COUNT.
int fragment_num;
int num_fragments;
int x_offset, y_offset; // offset relative to the canvas.