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vpx/vp8/common/idct.h

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Initial WebM release
2010-05-18 17:58:33 +02:00
/*
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 14:16:39 +02:00
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
Initial WebM release
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*
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 18:39:21 +02:00
* Use of this source code is governed by a BSD-style license
LICENSE: update with latest text Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
2010-06-04 22:19:40 +02:00
* 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 18:39:21 +02:00
* in the file PATENTS. All contributing project authors may
LICENSE: update with latest text Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
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* be found in the AUTHORS file in the root of the source tree.
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*/
#ifndef __INC_IDCT_H
#define __INC_IDCT_H
#define prototype_second_order(sym) \
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 00:21:29 +02:00
void sym(short *input, short *output)
Initial WebM release
2010-05-18 17:58:33 +02:00
#define prototype_idct(sym) \
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 00:21:29 +02:00
void sym(short *input, short *output, int pitch)
Initial WebM release
2010-05-18 17:58:33 +02:00
Combine idct and reconstruction steps This moves the prediction step before the idct and combines the idct and reconstruction steps into a single step. Combining them seems to give an overall decoder performance improvement of about 1%. Change-Id: I90d8b167ec70d79c7ba2ee484106a78b3d16e318
2010-05-28 20:28:12 +02:00
#define prototype_idct_scalar_add(sym) \
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 00:21:29 +02:00
void sym(short input, \
unsigned char *pred, unsigned char *output, \
int pitch, int stride)
Initial WebM release
2010-05-18 17:58:33 +02:00
#if ARCH_X86 || ARCH_X86_64
#include "x86/idct_x86.h"
#endif
#if ARCH_ARM
#include "arm/idct_arm.h"
#endif
Add lossless compression mode. This commit adds lossless compression capability to the experimental branch. The lossless experiment can be enabled using --enable-lossless in configure. When the experiment is enabled, the encoder will use lossless compression mode by command line option --lossless, and the decoder automatically recognizes a losslessly encoded clip and decodes accordingly. To achieve the lossless coding, this commit has changed the following: 1. To encode at lossless mode, encoder forces the use of unit quantizer, i.e, Q 0, where effective quantization is 1. Encoder also disables the usage of 8x8 transform and allows only 4x4 transform; 2. At Q 0, the first order 4x4 DCT/IDCT have been switched over to a pair of forward and inverse Walsh-Hadamard Transform (http://goo.gl/EIsfy), with proper scaling applied to match the range of the original 4x4 DCT/IDCT pair; 3. At Q 0, the second order remains to use the previous walsh-hadamard transform pair. However, to maintain the reversibility in second order transform at Q 0, scaling down is applied to first order DC coefficients prior to forward transform, and scaling up is applied to the second order output prior to quantization. Symmetric upscaling and downscaling are added around inverse second order transform; 4. At lossless mode, encoder also disables a number of minor features to ensure no loss is introduced, these features includes: a. Trellis quantization optimization b. Loop filtering c. Aggressive zero-binning, rounding and zero-bin boosting d. Mode based zero-bin boosting Lossless coding test was performed on all clips within the derf set, to verify that the commit has achieved lossless compression for all clips. The average compression ratio is around 2.57 to 1. (http://goo.gl/dEShs) Change-Id: Ia3aba7dd09df40dd590f93b9aba134defbc64e34
2012-06-14 04:03:31 +02:00
#if CONFIG_LOSSLESS
#define WHT_UPSCALE_FACTOR 3
#define Y2_WHT_UPSCALE_FACTOR 2
#endif
Merge t8x8 experiments Change-Id: I8e9b6b154e1a0d0cb42d596366380d69c00ac15f
2012-02-29 02:11:12 +01:00
Add 8x8 transform to experimental branch Please refer to previous commit messages for detailed info: https://on2-git.corp.google.com/g/#change,5940 https://on2-git.corp.google.com/g/#change,6045 Change-Id: I8b16992f2f69c5a808ad40a3e32ef589cce7c59d
2011-02-14 23:18:18 +01:00
#ifndef vp8_idct_idct8
#define vp8_idct_idct8 vp8_short_idct8x8_c
#endif
extern prototype_idct(vp8_idct_idct8);
#ifndef vp8_idct_idct8_1
#define vp8_idct_idct8_1 vp8_short_idct8x8_1_c
#endif
extern prototype_idct(vp8_idct_idct8_1);
#ifndef vp8_idct_ihaar2
#define vp8_idct_ihaar2 vp8_short_ihaar2x2_c
#endif
extern prototype_idct(vp8_idct_ihaar2);
#ifndef vp8_idct_ihaar2_1
#define vp8_idct_ihaar2_1 vp8_short_ihaar2x2_1_c
#endif
extern prototype_idct(vp8_idct_ihaar2_1);
#ifndef vp8_idct_idct1_scalar_add_8x8
#define vp8_idct_idct1_scalar_add_8x8 vp8_dc_only_idct_add_8x8_c
#endif
extern prototype_idct_scalar_add(vp8_idct_idct1_scalar_add_8x8);
Merge t8x8 experiments Change-Id: I8e9b6b154e1a0d0cb42d596366380d69c00ac15f
2012-02-29 02:11:12 +01:00
Add 8x8 transform to experimental branch Please refer to previous commit messages for detailed info: https://on2-git.corp.google.com/g/#change,5940 https://on2-git.corp.google.com/g/#change,6045 Change-Id: I8b16992f2f69c5a808ad40a3e32ef589cce7c59d
2011-02-14 23:18:18 +01:00
Initial WebM release
2010-05-18 17:58:33 +02:00
#ifndef vp8_idct_idct1
#define vp8_idct_idct1 vp8_short_idct4x4llm_1_c
#endif
extern prototype_idct(vp8_idct_idct1);
#ifndef vp8_idct_idct16
#define vp8_idct_idct16 vp8_short_idct4x4llm_c
#endif
extern prototype_idct(vp8_idct_idct16);
Combine idct and reconstruction steps This moves the prediction step before the idct and combines the idct and reconstruction steps into a single step. Combining them seems to give an overall decoder performance improvement of about 1%. Change-Id: I90d8b167ec70d79c7ba2ee484106a78b3d16e318
2010-05-28 20:28:12 +02:00
#ifndef vp8_idct_idct1_scalar_add
#define vp8_idct_idct1_scalar_add vp8_dc_only_idct_add_c
Initial WebM release
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#endif
Combine idct and reconstruction steps This moves the prediction step before the idct and combines the idct and reconstruction steps into a single step. Combining them seems to give an overall decoder performance improvement of about 1%. Change-Id: I90d8b167ec70d79c7ba2ee484106a78b3d16e318
2010-05-28 20:28:12 +02:00
extern prototype_idct_scalar_add(vp8_idct_idct1_scalar_add);
Initial WebM release
2010-05-18 17:58:33 +02:00
fix more merge issues With this fix, the experimental branch now builds and encodes correctly with the following two configure options respectively: --enable-experimental --enable-t8x8 --enable-experimental Change-Id: I3147c33c503fe713a85fd371e4f1a974805778bf
2011-07-20 23:21:24 +02:00
Initial WebM release
2010-05-18 17:58:33 +02:00
#ifndef vp8_idct_iwalsh1
#define vp8_idct_iwalsh1 vp8_short_inv_walsh4x4_1_c
#endif
extern prototype_second_order(vp8_idct_iwalsh1);
#ifndef vp8_idct_iwalsh16
#define vp8_idct_iwalsh16 vp8_short_inv_walsh4x4_c
#endif
extern prototype_second_order(vp8_idct_iwalsh16);
Add lossless compression mode. This commit adds lossless compression capability to the experimental branch. The lossless experiment can be enabled using --enable-lossless in configure. When the experiment is enabled, the encoder will use lossless compression mode by command line option --lossless, and the decoder automatically recognizes a losslessly encoded clip and decodes accordingly. To achieve the lossless coding, this commit has changed the following: 1. To encode at lossless mode, encoder forces the use of unit quantizer, i.e, Q 0, where effective quantization is 1. Encoder also disables the usage of 8x8 transform and allows only 4x4 transform; 2. At Q 0, the first order 4x4 DCT/IDCT have been switched over to a pair of forward and inverse Walsh-Hadamard Transform (http://goo.gl/EIsfy), with proper scaling applied to match the range of the original 4x4 DCT/IDCT pair; 3. At Q 0, the second order remains to use the previous walsh-hadamard transform pair. However, to maintain the reversibility in second order transform at Q 0, scaling down is applied to first order DC coefficients prior to forward transform, and scaling up is applied to the second order output prior to quantization. Symmetric upscaling and downscaling are added around inverse second order transform; 4. At lossless mode, encoder also disables a number of minor features to ensure no loss is introduced, these features includes: a. Trellis quantization optimization b. Loop filtering c. Aggressive zero-binning, rounding and zero-bin boosting d. Mode based zero-bin boosting Lossless coding test was performed on all clips within the derf set, to verify that the commit has achieved lossless compression for all clips. The average compression ratio is around 2.57 to 1. (http://goo.gl/dEShs) Change-Id: Ia3aba7dd09df40dd590f93b9aba134defbc64e34
2012-06-14 04:03:31 +02:00
#if CONFIG_LOSSLESS
extern prototype_idct(vp8_short_inv_walsh4x4_x8_c);
extern prototype_idct(vp8_short_inv_walsh4x4_1_x8_c);
extern prototype_idct_scalar_add(vp8_dc_only_inv_walsh_add_c);
extern prototype_second_order(vp8_short_inv_walsh4x4_lossless_c);
extern prototype_second_order(vp8_short_inv_walsh4x4_1_lossless_c);
#endif
Adds hybrid transform Adds ADST/DCT hybrid transform coding for Intra4x4 mode. The ADST is applied to directions in which the boundary pixels are used for prediction, while DCT applied to directions without corresponding boundary prediction. Adds enum TX_TYPE in b_mode_infor to indicate the transform type used. Make coding style consistent with google style. Fixed the commented issues. Experimental results in terms of bit-rate reduction: derf: 0.731% yt: 0.982% std-hd: 0.459% hd: 0.725% Will be looking at 8x8 transforms next. Change-Id: I46dbd7b80dbb3e8856e9c34fbc58cb3764a12fcf
2012-06-25 21:26:09 +02:00
#if CONFIG_HYBRIDTRANSFORM
#include "vp8/common/blockd.h"
void vp8_iht4x4llm_c(short *input, short *output, int pitch, TX_TYPE tx_type);
#endif
Initial WebM release
2010-05-18 17:58:33 +02:00
typedef prototype_idct((*vp8_idct_fn_t));
Combine idct and reconstruction steps This moves the prediction step before the idct and combines the idct and reconstruction steps into a single step. Combining them seems to give an overall decoder performance improvement of about 1%. Change-Id: I90d8b167ec70d79c7ba2ee484106a78b3d16e318
2010-05-28 20:28:12 +02:00
typedef prototype_idct_scalar_add((*vp8_idct_scalar_add_fn_t));
Initial WebM release
2010-05-18 17:58:33 +02:00
typedef prototype_second_order((*vp8_second_order_fn_t));
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 00:21:29 +02:00
typedef struct {
vp8_idct_fn_t idct1;
vp8_idct_fn_t idct16;
vp8_idct_scalar_add_fn_t idct1_scalar_add;
Initial WebM release
2010-05-18 17:58:33 +02:00
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 00:21:29 +02:00
vp8_second_order_fn_t iwalsh1;
vp8_second_order_fn_t iwalsh16;
Add 8x8 transform to experimental branch Please refer to previous commit messages for detailed info: https://on2-git.corp.google.com/g/#change,5940 https://on2-git.corp.google.com/g/#change,6045 Change-Id: I8b16992f2f69c5a808ad40a3e32ef589cce7c59d
2011-02-14 23:18:18 +01:00
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 00:21:29 +02:00
vp8_idct_fn_t idct8;
vp8_idct_fn_t idct8_1;
vp8_idct_scalar_add_fn_t idct1_scalar_add_8x8;
vp8_idct_fn_t ihaar2;
vp8_idct_fn_t ihaar2_1;
Initial WebM release
2010-05-18 17:58:33 +02:00
} vp8_idct_rtcd_vtable_t;
#if CONFIG_RUNTIME_CPU_DETECT
#define IDCT_INVOKE(ctx,fn) (ctx)->fn
#else
#define IDCT_INVOKE(ctx,fn) vp8_idct_##fn
#endif
#endif
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