vpx/vp9/decoder/vp9_detokenize.h

/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */


#ifndef VP9_DECODER_VP9_DETOKENIZE_H_
#define VP9_DECODER_VP9_DETOKENIZE_H_

#include "vp9/decoder/vp9_decoder.h"
#include "vp9/decoder/vp9_reader.h"

#ifdef __cplusplus
extern "C" {
#endif

int vp9_decode_block_tokens(VP9_COMMON *cm, MACROBLOCKD *xd,
                            int plane, int block, BLOCK_SIZE plane_bsize,
                            int x, int y, TX_SIZE tx_size, vp9_reader *r);

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // VP9_DECODER_VP9_DETOKENIZE_H_
Initial WebM release 2010-05-18 11:58:33 -04:00			`/*`
Use WebM in copyright notice for consistency Changes 'The VP8 project' to 'The WebM project', for consistency with other webmproject.org repositories. Fixes issue #97. Change-Id: I37c13ed5fbdb9d334ceef71c6350e9febed9bbba 2010-09-09 08:16:39 -04:00			`* Copyright (c) 2010 The WebM project authors. All Rights Reserved.`
Initial WebM release 2010-05-18 11:58:33 -04:00			`*`
cosmetics: trim trailing whitespace When the license headers were updated, they accidentally contained trailing whitespace, so unfortunately we have to touch all the files again. Change-Id: I236c05fade06589e417179c0444cb39b09e4200d 2010-06-18 12:39:21 -04:00			`* Use of this source code is governed by a BSD-style license`
LICENSE: update with latest text Change-Id: Ieebea089095d9073b3a94932791099f614ce120c 2010-06-04 16:19:40 -04:00			`* that can be found in the LICENSE file in the root of the source`
			`* tree. An additional intellectual property rights grant can be found`
cosmetics: trim trailing whitespace When the license headers were updated, they accidentally contained trailing whitespace, so unfortunately we have to touch all the files again. Change-Id: I236c05fade06589e417179c0444cb39b09e4200d 2010-06-18 12:39:21 -04:00			`* in the file PATENTS. All contributing project authors may`
LICENSE: update with latest text Change-Id: Ieebea089095d9073b3a94932791099f614ce120c 2010-06-04 16:19:40 -04:00			`* be found in the AUTHORS file in the root of the source tree.`
Initial WebM release 2010-05-18 11:58:33 -04:00			`*/`


google style guide include guards Change-Id: I2c252f3ddcc99e96c1f5d3dab8bcb25a2a3637ea 2012-11-29 16:36:10 -08:00			`#ifndef VP9_DECODER_VP9_DETOKENIZE_H_`
			`#define VP9_DECODER_VP9_DETOKENIZE_H_`
Initial WebM release 2010-05-18 11:58:33 -04:00
Renaming vp9_onyxd.h and vp9_onyxd_if.c to vp9_decoder.{h, c}. Change-Id: Ibd0892be1ddadd93b8a22fa2c2e2053001f2948f 2014-03-06 12:08:20 -08:00			`#include "vp9/decoder/vp9_decoder.h"`
Renaming vp9_dboolhuff.{h, c} to vp9_reader.{h, c}. Change-Id: I50c009ff8108bda1c57427f23d63a79c04f7e776 2013-12-20 11:22:25 -08:00			`#include "vp9/decoder/vp9_reader.h"`
Initial WebM release 2010-05-18 11:58:33 -04:00
vp9/decoder: add extern "C" to headers Change-Id: I0e6aa00f220280e22d30d098545265835d0c1079 2014-01-18 12:16:11 -08:00			`#ifdef __cplusplus`
			`extern "C" {`
			`#endif`

Reducing the number of foreach_transformed_block() calls. The change doesn't affect the bitstream. It changes the order or function calls and affects how we reconstruct intra- and inter-blocks. Speed up is about 1...1.5%. For intra-blocks: Before: for each transform block read tokens for each transform block do prediction for each transform block do inverse transform Now: for each transform block read tokens do prediction do inverse transform For inter-blocks: Before: for each transform block read tokens for each transform block do inverse transform Now: for each transform block read tokens do inverse transform Change-Id: I12a79bf1aa5a18c351b8010369bd3ff1deae1570 2013-10-31 13:52:08 -07:00			`int vp9_decode_block_tokens(VP9_COMMON cm, MACROBLOCKD xd,`
			`int plane, int block, BLOCK_SIZE plane_bsize,`
Using local variable for token_cache. The difference with the old code is that originally the whole token_cache was initialized with zeros at the beginning of decode_coefs() function. Now we set several zero values explicitly with "token_cache[scan[c]] = 0". Change-Id: I88cc5031f01d13012d1a4491739c36cb44f9401e 2013-12-02 15:44:26 -08:00			`int x, int y, TX_SIZE tx_size, vp9_reader *r);`
Make superblocks independent of macroblock code and data. Split macroblock and superblock tokenization and detokenization functions and coefficient-related data structs so that the bitstream layout and related code of superblock coefficients looks less like it's a hack to fit macroblocks in superblocks. In addition, unify chroma transform size selection from luma transform size (i.e. always use the same size, as long as it fits the predictor); in practice, this means 32x32 and 64x64 superblocks using the 16x16 luma transform will now use the 16x16 (instead of the 8x8) chroma transform, and 64x64 superblocks using the 32x32 luma transform will now use the 32x32 (instead of the 16x16) chroma transform. Lastly, add a trellis optimize function for 32x32 transform blocks. HD gains about 0.3%, STDHD about 0.15% and derf about 0.1%. There's a few negative points here and there that I might want to analyze a little closer. Change-Id: Ibad7c3ddfe1acfc52771dfc27c03e9783e054430 2013-03-04 14:12:17 -08:00
vp9/decoder: add extern "C" to headers Change-Id: I0e6aa00f220280e22d30d098545265835d0c1079 2014-01-18 12:16:11 -08:00			`#ifdef __cplusplus`
			`} // extern "C"`
			`#endif`

Use standard integer types for pixel values and coefficients. For coefficients, use int16_t (instead of short); for pixel values in 16-bit intermediates, use uint16_t (instead of unsigned short); for all others, use uint8_t (instead of unsigned char). Change-Id: I3619cd9abf106c3742eccc2e2f5e89a62774f7da 2012-12-18 15:31:19 -08:00			`#endif // VP9_DECODER_VP9_DETOKENIZE_H_`