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prepare experimentation with yuv444 / 422

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+ add a simple rescaling function: WebPPictureRescale() for encoding
+ clean-up the memory managment around the alpha plane
+ fix some includes path by using "../webp/xxx.h" instead of "webp/xxx.h"

New flags for 'cwebp':
 -resize <width> <height>
 -444  (no effect)
 -422  (no effect)
 -400

Change-Id: I25a95f901493f939c2dd789e658493b83bd1abfa
This commit is contained in:
Pascal Massimino
2011-05-02 17:19:00 -07:00
parent 79cc49f5eb
commit 6d0e66c23e
25 changed files with 658 additions and 132 deletions
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9
src/dec/vp8i.h
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@ -244,13 +244,17 @@ struct VP8Decoder {
uint32_t non_zero_ac_;
// Filtering side-info
int filter_type_; // 0=off, 1=simple, 2=complex
int filter_type_; // 0=off, 1=simple, 2=complex
uint8_t filter_levels_[NUM_MB_SEGMENTS]; // precalculated per-segment
// extensions
const uint8_t* alpha_data_; // compressed alpha data (if present)
size_t alpha_data_size_;
uint8_t* alpha_plane_; // output
int layer_colorspace_;
const uint8_t* layer_data_; // compressed layer data (if present)
size_t layer_data_size_;
};
//-----------------------------------------------------------------------------
@ -283,6 +287,9 @@ int VP8DecodeMB(VP8Decoder* const dec, VP8BitReader* const token_br);
const uint8_t* VP8DecompressAlphaRows(VP8Decoder* const dec,
int row, int num_rows);
// in layer.c
int VP8DecodeLayer(VP8Decoder* const dec);
// in dsp.c
typedef void (*VP8Idct)(const int16_t* coeffs, uint8_t* dst);
extern VP8Idct VP8Transform;