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aom/vp9/common/vp9_entropymode.h

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3.4 KiB
C
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Initial WebM release
2010-05-18 19:58:33 +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 16:16:39 +04:00
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
Initial WebM release
2010-05-18 19:58:33 +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 20:39:21 +04:00
* Use of this source code is governed by a BSD-style license
LICENSE: update with latest text Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
2010-06-05 00:19:40 +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 20:39:21 +04:00
* in the file PATENTS. All contributing project authors may
LICENSE: update with latest text Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
2010-06-05 00:19:40 +04:00
* be found in the AUTHORS file in the root of the source tree.
Initial WebM release
2010-05-18 19:58:33 +04:00
*/
google style guide include guards Change-Id: I2c252f3ddcc99e96c1f5d3dab8bcb25a2a3637ea
2012-11-30 04:36:10 +04:00
#ifndef VP9_COMMON_VP9_ENTROPYMODE_H_
#define VP9_COMMON_VP9_ENTROPYMODE_H_
Initial WebM release
2010-05-18 19:58:33 +04:00
fixed includes to be fully specified Change-Id: Ia1cce221f8511561b9cbd8edb7726fbc286ff243
2012-11-28 22:41:40 +04:00
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_treecoder.h"
Initial WebM release
2010-05-18 19:58:33 +04:00
Adds support for switchable interpolation filters. Allows for swtiching/setting interpolation filters at the MB level. A frame level flag indicates whether to use a specifc filter for the entire frame or to signal the interpolation filter for each MB. When switchable filters are used, the encoder chooses between 8-tap and 8-tap sharp filters. The code currently has options to explore other variations as well, which will be cleaned up subsequently. One issue with the framework is that encoding is slow. I tried to do some tricks to speed things up but it is still slow. Decoding speed should not be affected since the number of filter taps remain unchanged. With the current version, we are up 0.5% on derf on average but some videos city/mobile improve by close to 4 and 2% respectively. If we did a full-search by turning the SEARCH_BEST_FILTER flag on, the results are somewhat better. The framework can be combined with filtered prediction, and I seek feedback regarding that. Rebased. Change-Id: I8f632cb2c111e76284140a2bd480945d6d42b77a
2012-07-19 00:43:01 +04:00
#define SUBMVREF_COUNT 5
Change common vp8_ public symbol prefixes to vp9_. Change-Id: Ic5a5f60e1ff9d9ccae4174160d36529466eeb509
2012-10-31 03:25:53 +04:00
extern int vp9_mv_cont(const int_mv *l, const int_mv *a);
Continued adaptive entropy coding Incorporates mv_ref, mbsplit and second_mv into the adaptive entropy framework. The mv_ref framework has been modified from before. Adds some clean-ups and fixes. Results with the adaptive entropy experiment are currently up by +1.93% on derf; +2.33% std-hd and +1.87% yt-hd. Fixed a nasty intermittent bug. Change-Id: I4b1ac9f9483b48432597595195bfec05f31d1e39
2012-06-20 16:07:24 +04:00
Replace default counts with default probs. Replace vp9_kf_default_bmode_counts structure with direct default probabilities. The probability structure is smaller and it removes the need to specify in the bitstream how to convert the counts to probabilities. Note that I have concerns still about the size and value of the large intra mode context. This may cause problems for HW but it also means we rely heavily on reverse update as forwards update of a structure this size is problematic. I intend to review this more generally in the next few days to see if we can come up with a competitive solution that does not rely on such a large context. Change-Id: I0a36071079d5d26a57ab0e9fbf91af4199aa7984
2013-05-16 19:29:33 +04:00
extern const vp9_prob vp9_kf_default_bmode_probs[VP9_KF_BINTRAMODES]
[VP9_KF_BINTRAMODES]
[VP9_KF_BINTRAMODES -1 ];
Initial WebM release
2010-05-18 19:58:33 +04:00
Remove vp8 in local symbols. For non-static functions, change the prefix to vp9_. For static functions, remove the prefix. Also fix some comments, remove unused code or unused function prototypes. Change-Id: I1f8be05362f66060fe421c3d4c9a906fdf835de5
2012-11-01 01:40:53 +04:00
extern const vp9_tree_index vp9_bmode_tree[];
New b-intra mode where direction is contextual Preliminary patch on a new 4x4 intra mode B_CONTEXT_PRED where the dominant direction from the context is used to encode. Various decoder changes are needed to support decoding of B_CONTEXT_PRED in conjunction with hybrid transforms since the scan order and tokenization depends on the actual direction of prediction obtained from the context. Currently the traditional directional modes are used in conjunction with the B_CONTEXT_PRED, which also seems to provide the best results. The gains are small - in the 0.1% range. Change-Id: I5a7ea80b5218f42a9c0dfb42d3f79a68c7f0cdc2
2012-10-10 00:19:15 +04:00
extern const vp9_tree_index vp9_kf_bmode_tree[];
Initial WebM release
2010-05-18 19:58:33 +04:00
Remove vp8 in local symbols. For non-static functions, change the prefix to vp9_. For static functions, remove the prefix. Also fix some comments, remove unused code or unused function prototypes. Change-Id: I1f8be05362f66060fe421c3d4c9a906fdf835de5
2012-11-01 01:40:53 +04:00
extern const vp9_tree_index vp9_ymode_tree[];
extern const vp9_tree_index vp9_kf_ymode_tree[];
extern const vp9_tree_index vp9_uv_mode_tree[];
#define vp9_sb_ymode_tree vp9_uv_mode_tree
Support 32x32 intra modes in non-keyframe superblocks. Change-Id: Icf8ad313c543462e523bff89690e5daa8d49bcc0
2012-11-16 03:50:07 +04:00
#define vp9_sb_kf_ymode_tree vp9_uv_mode_tree
Remove vp8 in local symbols. For non-static functions, change the prefix to vp9_. For static functions, remove the prefix. Also fix some comments, remove unused code or unused function prototypes. Change-Id: I1f8be05362f66060fe421c3d4c9a906fdf835de5
2012-11-01 01:40:53 +04:00
extern const vp9_tree_index vp9_mv_ref_tree[];
extern const vp9_tree_index vp9_sb_mv_ref_tree[];
extern const vp9_tree_index vp9_sub_mv_ref_tree[];
Initial WebM release
2010-05-18 19:58:33 +04:00
Renaming vp9_token_struct to vp9_token and removing previous typedef. Change-Id: If69c3d795f87af5cc7bfdfe70ef733c41b4d55c8
2013-04-12 00:01:52 +04:00
extern struct vp9_token vp9_bmode_encodings[VP9_NKF_BINTRAMODES];
extern struct vp9_token vp9_kf_bmode_encodings[VP9_KF_BINTRAMODES];
extern struct vp9_token vp9_ymode_encodings[VP9_YMODES];
extern struct vp9_token vp9_sb_ymode_encodings[VP9_I32X32_MODES];
extern struct vp9_token vp9_sb_kf_ymode_encodings[VP9_I32X32_MODES];
extern struct vp9_token vp9_kf_ymode_encodings[VP9_YMODES];
extern struct vp9_token vp9_uv_mode_encodings[VP9_UV_MODES];
Initial WebM release
2010-05-18 19:58:33 +04:00
/* Inter mode values do not start at zero */
Renaming vp9_token_struct to vp9_token and removing previous typedef. Change-Id: If69c3d795f87af5cc7bfdfe70ef733c41b4d55c8
2013-04-12 00:01:52 +04:00
extern struct vp9_token vp9_mv_ref_encoding_array[VP9_MVREFS];
extern struct vp9_token vp9_sb_mv_ref_encoding_array[VP9_MVREFS];
Initial WebM release
2010-05-18 19:58:33 +04:00
Recursive partition syntax coding Enable recursive partition information coding from SB64X64 down to MB16X16. The bit-stream syntax is now supporting rectangular block sizes. It starts from SB64X64 and recursively describes the partition type of the current block. If the partition type is PARTITION_NONE, the block is coded as a single unit; if it is PARTITION_HORZ or PARTITION_VERT, the block is segmented into two independently coded rectangular units, with no further partition needed; otherwise, the block is segmented into 4 square blocks. i.e., PARTITION_SPLIT case, each can be potentially further partitioned. Forward adaptive probability modeling is used for the partition information coding, conditioned on the current block size. Change-Id: I499365fb547839d555498e3bcc0387d8a3587d87
2013-04-16 11:18:02 +04:00
// probability models for partition information
extern const vp9_tree_index vp9_partition_tree[];
extern struct vp9_token vp9_partition_encodings[PARTITION_TYPES];
Change common vp8_ public symbol prefixes to vp9_. Change-Id: Ic5a5f60e1ff9d9ccae4174160d36529466eeb509
2012-10-31 03:25:53 +04:00
void vp9_entropy_mode_init(void);
Initial WebM release
2010-05-18 19:58:33 +04:00
Change name of common top-level structures from VP8 to VP9. This change encompasses VP8_PTR, VP8_COMP, VP8D_COMP, VP8_COMMON, VP8Decompressor and VP8Common. Change-Id: I514ef4ad4e682370f36d656af1c09ee20da216ad
2012-10-31 04:53:32 +04:00
struct VP9Common;
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
Adds an error-resilient mode with test Adds an error-resilient mode where frames can be continued to be decoded even when there are errors (due to network losses) on a prior frame. Specifically, backward updates are turned off and probabilities of various symbols are reset to defaults at the beginning of each frame. Further, the last frame's mvs are not used for the mv reference list, and the sorting of the initial list based on search on previous frames is turned off as well. Also adds a test where an arbitrary set of frames are skipped from decoding to simulate errors. The test verifies (1) that if the error frames are droppable - i.e. frame buffer updates have been turned off - there are no mismatch errors for the remaining frames after the error frames; and (2) if the error-frames are non droppable, there are not only no decoding errors but the mismatch PSNR between the decoder's version of the post-error frames and the encoder's version is at least 20 dB. Change-Id: Ie6e2bcd436b1e8643270356d3a930e8989ff52a5
2013-01-15 18:43:35 +04:00
/* sets up common features to forget past dependence */
void vp9_setup_past_independence(struct VP9Common *cm, MACROBLOCKD *xd);
Change name of common top-level structures from VP8 to VP9. This change encompasses VP8_PTR, VP8_COMP, VP8D_COMP, VP8_COMMON, VP8Decompressor and VP8Common. Change-Id: I514ef4ad4e682370f36d656af1c09ee20da216ad
2012-10-31 04:53:32 +04:00
void vp9_init_mbmode_probs(struct VP9Common *x);
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
Change name of common top-level structures from VP8 to VP9. This change encompasses VP8_PTR, VP8_COMP, VP8D_COMP, VP8_COMMON, VP8Decompressor and VP8Common. Change-Id: I514ef4ad4e682370f36d656af1c09ee20da216ad
2012-10-31 04:53:32 +04:00
extern void vp9_init_mode_contexts(struct VP9Common *pc);
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
Adds an error-resilient mode with test Adds an error-resilient mode where frames can be continued to be decoded even when there are errors (due to network losses) on a prior frame. Specifically, backward updates are turned off and probabilities of various symbols are reset to defaults at the beginning of each frame. Further, the last frame's mvs are not used for the mv reference list, and the sorting of the initial list based on search on previous frames is turned off as well. Also adds a test where an arbitrary set of frames are skipped from decoding to simulate errors. The test verifies (1) that if the error frames are droppable - i.e. frame buffer updates have been turned off - there are no mismatch errors for the remaining frames after the error frames; and (2) if the error-frames are non droppable, there are not only no decoding errors but the mismatch PSNR between the decoder's version of the post-error frames and the encoder's version is at least 20 dB. Change-Id: Ie6e2bcd436b1e8643270356d3a930e8989ff52a5
2013-01-15 18:43:35 +04:00
extern void vp9_adapt_mode_context(struct VP9Common *pc);
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
Change name of common top-level structures from VP8 to VP9. This change encompasses VP8_PTR, VP8_COMP, VP8D_COMP, VP8_COMMON, VP8Decompressor and VP8Common. Change-Id: I514ef4ad4e682370f36d656af1c09ee20da216ad
2012-10-31 04:53:32 +04:00
extern void vp9_accum_mv_refs(struct VP9Common *pc,
Restyle code Approximate the Google style guide[1] so that that there's a written document to follow and tools to check compliance[2]. [1]: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml [2]: http://google-styleguide.googlecode.com/svn/trunk/cpplint/cpplint.py Change-Id: Idf40e3d8dddcc72150f6af127b13e5dab838685f
2012-07-14 02:21:29 +04:00
MB_PREDICTION_MODE m,
New inter mode context This change is a fix / extension of the newbestrefmv experiment. As such it is presented without IFDEF. The change creates a new context for coding inter modes in vp9_find_mv_refs(). This replaces the context that was previously calculated in vp9_find_near_mvs(). The new context is unoptimized and not necessarily any better at this stage (results pending), but eliminates the need for a legacy call to vp9_find_near_mvs(). Based on numbers from Scott, this could help decode speed by several %. In a later patch I will add support for forward update of context (assuming this helps) and refine the context as necessary. Change-Id: I1cd991b82c8df86cc02237a34185e6d67510698a
2012-11-12 19:09:25 +04:00
const int context);
Revised coding using adaptive mode context to depend on frame type A previous commit 76feb965 made the vp8_mode_context adaptive on a frame frame basis, this commit further made the coding context adaptive to two frame types separately. Tests on derf set showed a further small gain on all metrics: avg psnr 0.10%, glb psnr: 0.11%, ssim: 0.08% http://www.corp.google.com/~yaowu/no_crawl/newNearMode_1209.html Change-Id: I7b3e32ec8729de1903d14a3f1213f1624b78cdee
2011-12-08 23:43:09 +04:00
New b-intra mode where direction is contextual Preliminary patch on a new 4x4 intra mode B_CONTEXT_PRED where the dominant direction from the context is used to encode. Various decoder changes are needed to support decoding of B_CONTEXT_PRED in conjunction with hybrid transforms since the scan order and tokenization depends on the actual direction of prediction obtained from the context. Currently the traditional directional modes are used in conjunction with the B_CONTEXT_PRED, which also seems to provide the best results. The gains are small - in the 0.1% range. Change-Id: I5a7ea80b5218f42a9c0dfb42d3f79a68c7f0cdc2
2012-10-10 00:19:15 +04:00
void vp9_default_bmode_probs(vp9_prob dest[VP9_NKF_BINTRAMODES - 1]);
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
Change name of common top-level structures from VP8 to VP9. This change encompasses VP8_PTR, VP8_COMP, VP8D_COMP, VP8_COMMON, VP8Decompressor and VP8Common. Change-Id: I514ef4ad4e682370f36d656af1c09ee20da216ad
2012-10-31 04:53:32 +04:00
void vp9_adapt_mode_probs(struct VP9Common *);
Adds support for switchable interpolation filters. Allows for swtiching/setting interpolation filters at the MB level. A frame level flag indicates whether to use a specifc filter for the entire frame or to signal the interpolation filter for each MB. When switchable filters are used, the encoder chooses between 8-tap and 8-tap sharp filters. The code currently has options to explore other variations as well, which will be cleaned up subsequently. One issue with the framework is that encoding is slow. I tried to do some tricks to speed things up but it is still slow. Decoding speed should not be affected since the number of filter taps remain unchanged. With the current version, we are up 0.5% on derf on average but some videos city/mobile improve by close to 4 and 2% respectively. If we did a full-search by turning the SEARCH_BEST_FILTER flag on, the results are somewhat better. The framework can be combined with filtered prediction, and I seek feedback regarding that. Rebased. Change-Id: I8f632cb2c111e76284140a2bd480945d6d42b77a
2012-07-19 00:43:01 +04:00
New prediction filter This patch removes the old pred-filter experiment and replaces it with one that is implemented using the switchable filter framework. If the pred-filter experiment is enabled, three interopolation filters are tested during mode selection; the standard 8-tap interpolation filter, a sharp 8-tap filter and a (new) 8-tap smoothing filter. The 6-tap filter code has been preserved for now and if the enable-6tap experiment is enabled (in addition to the pred-filter experiment) the original 6-tap filter replaces the new 8-tap smooth filter in the switchable mode. The new experiment applies the prediction filter in cases of a fractional-pel motion vector. Future patches will apply the filter where the mv is pel-aligned and also to intra predicted blocks. Change-Id: I08e8cba978f2bbf3019f8413f376b8e2cd85eba4
2013-01-09 02:14:01 +04:00
#define VP9_SWITCHABLE_FILTERS 3 /* number of switchable filters */
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
Change non-function symbol vp8_ prefixes to vp9_. For local symbols, make them static instead. Change-Id: I13d60947a46f711bc8991e16100cea2a13e3a22e
2012-10-31 04:12:12 +04:00
extern const INTERPOLATIONFILTERTYPE vp9_switchable_interp
Remove vp8 in local symbols. For non-static functions, change the prefix to vp9_. For static functions, remove the prefix. Also fix some comments, remove unused code or unused function prototypes. Change-Id: I1f8be05362f66060fe421c3d4c9a906fdf835de5
2012-11-01 01:40:53 +04:00
[VP9_SWITCHABLE_FILTERS];
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
Change non-function symbol vp8_ prefixes to vp9_. For local symbols, make them static instead. Change-Id: I13d60947a46f711bc8991e16100cea2a13e3a22e
2012-10-31 04:12:12 +04:00
extern const int vp9_switchable_interp_map[SWITCHABLE + 1];
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
Refactoring of switchable filter search for speed Refactors the switchable filter search in the rd loop to improve encode speed. Uses a piecewise approximation to a closed form expression to estimate rd cost for a Laplacian source with a given variance and quantization step-size. About 40% encode time reduction is achieved. Results (on a feb 12 baseline) show a slight drop: derf: -0.019% yt: +0.010% std-hd: -0.162% hd: -0.050% Change-Id: Ie861badf5bba1e3b1052e29a0ef1b7e256edbcd0
2013-02-12 05:08:52 +04:00
extern const int vp9_is_interpolating_filter[SWITCHABLE + 1];
Remove vp8 in local symbols. For non-static functions, change the prefix to vp9_. For static functions, remove the prefix. Also fix some comments, remove unused code or unused function prototypes. Change-Id: I1f8be05362f66060fe421c3d4c9a906fdf835de5
2012-11-01 01:40:53 +04:00
extern const vp9_tree_index vp9_switchable_interp_tree
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
[2 * (VP9_SWITCHABLE_FILTERS - 1)];
Renaming vp9_token_struct to vp9_token and removing previous typedef. Change-Id: If69c3d795f87af5cc7bfdfe70ef733c41b4d55c8
2013-04-12 00:01:52 +04:00
extern struct vp9_token vp9_switchable_interp_encodings[VP9_SWITCHABLE_FILTERS];
Adjust style to match Google Coding Style a little more closely. Most of these were picked up by jenkins in the commit that changed the vp8 namespace to vp9 in common/. Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878
2012-11-01 03:09:17 +04:00
extern const vp9_prob vp9_switchable_interp_prob[VP9_SWITCHABLE_FILTERS + 1]
[VP9_SWITCHABLE_FILTERS - 1];
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
2012-12-19 03:31:19 +04:00
#endif // VP9_COMMON_VP9_ENTROPYMODE_H_