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Intertwined decoding of alpha and RGB

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This will reduce the time to first decoded pixel.

Change-Id: I07b900c0ed4af3aac806b2731e11cd18ec16d016
This commit is contained in:
Urvang Joshi
2013-06-11 16:04:54 -07:00
parent 3fa595a571
commit 068db59e26
11 changed files with 250 additions and 88 deletions
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6
src/dec/vp8i.h
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@ -279,12 +279,14 @@ struct VP8Decoder {
int filter_row_; // per-row flag
VP8FInfo fstrengths_[NUM_MB_SEGMENTS][2]; // precalculated per-segment/type
// extensions
const uint8_t* alpha_data_; // compressed alpha data (if present)
// Alpha
struct ALPHDecoder* alph_dec_; // alpha-plane decoder object
const uint8_t* alpha_data_; // compressed alpha data (if present)
size_t alpha_data_size_;
int is_alpha_decoded_; // true if alpha_data_ is decoded in alpha_plane_
uint8_t* alpha_plane_; // output. Persistent, contains the whole data.
// extensions
int layer_colorspace_;
const uint8_t* layer_data_; // compressed layer data (if present)
size_t layer_data_size_;