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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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24
src/enc/vp8enci.h
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@ -13,7 +13,7 @@
#define WEBP_ENC_VP8ENCI_H_
#include "string.h" // for memcpy()
#include "webp/encode.h"
#include "../webp/encode.h"
#include "bit_writer.h"
#if defined(__cplusplus) || defined(c_plusplus)
@ -330,9 +330,16 @@ struct VP8Encoder {
VP8BitWriter parts_[MAX_NUM_PARTITIONS]; // token partitions
// transparency blob
uint8_t* alpha_data_;
int has_alpha_;
uint8_t* alpha_data_; // non-NULL if transparency is present
size_t alpha_data_size_;
// enhancement layer
int use_layer_;
VP8BitWriter layer_bw_;
uint8_t* layer_data_;
size_t layer_data_size_;
// quantization info (one set of DC/AC dequant factor per segment)
VP8SegmentInfo dqm_[NUM_MB_SEGMENTS];
int base_quant_; // nominal quantizer value. Only used
@ -427,9 +434,16 @@ void VP8SetSegmentParams(VP8Encoder* const enc, float quality);
int VP8Decimate(VP8EncIterator* const it, VP8ModeScore* const rd, int rd_opt);
// in alpha.c
// Compress transparency information into enc->alpha_data_. Return true if ok.
int VP8EncProcessAlpha(VP8Encoder* enc);
void VP8EncDeleteAlpha(VP8Encoder* enc); // delete compressed data
void VP8EncInitAlpha(VP8Encoder* enc); // initialize alpha compression
void VP8EncCodeAlphaBlock(VP8EncIterator* it); // analyze or code a macroblock
int VP8EncFinishAlpha(VP8Encoder* enc); // finalize compressed data
void VP8EncDeleteAlpha(VP8Encoder* enc); // delete compressed data
// in layer.c
void VP8EncInitLayer(VP8Encoder* const enc); // init everything
void VP8EncCodeLayerBlock(VP8EncIterator* it); // code one more macroblock
int VP8EncFinishLayer(VP8Encoder* const enc); // finalize coding
void VP8EncDeleteLayer(VP8Encoder* enc); // reclaim memory
// in dsp.c
// Transforms