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vpx/vp8/encoder/variance.h
Yaowu Xu 6035da5448 WebM Experimental Codec Branch Snapshot 
This is a code snapshot of experimental work currently ongoing for a
next-generation codec.

The codebase has been cut down considerably from the libvpx baseline.
For example, we are currently only supporting VBR 2-pass rate control
and have removed most of the code relating to coding speed, threading,
error resilience, partitions and various other features.  This is in
part to make the codebase easier to work on and experiment with, but
also because we want to have an open discussion about how the bitstream
will be structured and partitioned and not have that conversation
constrained by past work.

Our basic working pattern has been to initially encapsulate experiments
using configure options linked to #IF CONFIG_XXX statements in the
code. Once experiments have matured and we are reasonably happy that
they give benefit and can be merged without breaking other experiments,
we remove the conditional compile statements and merge them in.

Current changes include:
* Temporal coding experiment for segments (though still only 4 max, it
  will likely be increased).
* Segment feature experiment - to allow various bits of information to
  be coded at the segment level. Features tested so far include mode
  and reference frame information, limiting end of block offset and
  transform size, alongside Q and loop filter parameters, but this set
  is very fluid.
* Support for 8x8 transform - 8x8 dct with 2nd order 2x2 haar is used
  in MBs using 16x16 prediction modes within inter frames.
* Compound prediction (combination of signals from existing predictors
  to create a new predictor).
* 8 tap interpolation filters and 1/8th pel motion vectors.
* Loop filter modifications.
* Various entropy modifications and changes to how entropy contexts and
  updates are handled.
* Extended quantizer range matched to transform precision improvements.

There are also ongoing further experiments that we hope to merge in the
near future: For example, coding of motion and other aspects of the
prediction signal to better support larger image formats, use of larger
block sizes (e.g. 32x32 and up) and lossless non-transform based coding
options (especially for key frames). It is our hope that we will be
able to make regular updates and we will warmly welcome community
contributions.

Please be warned that, at this stage, the codebase is currently slower
than VP8 stable branch as most new code has not been optimized, and
even the 'C' has been deliberately written to be simple and obvious,
not fast.

The following graphs have the initial test results, numbers in the
tables measure the compression improvement in terms of percentage. The
build has  the following optional experiments configured:
--enable-experimental --enable-enhanced_interp --enable-uvintra
--enable-high_precision_mv --enable-sixteenth_subpel_uv

CIF Size clips:
http://getwebm.org/tmp/cif/
HD size clips:
http://getwebm.org/tmp/hd/
(stable_20120309 represents encoding results of WebM master branch
build as of commit#7a15907)

They were encoded using the following encode parameters:
--good --cpu-used=0 -t 0 --lag-in-frames=25 --min-q=0 --max-q=63
--end-usage=0 --auto-alt-ref=1 -p 2 --pass=2 --kf-max-dist=9999
--kf-min-dist=0 --drop-frame=0 --static-thresh=0 --bias-pct=50
--minsection-pct=0 --maxsection-pct=800 --sharpness=0
--arnr-maxframes=7 --arnr-strength=3(for HD,6 for CIF)
--arnr-type=3

Change-Id: I5c62ed09cfff5815a2bb34e7820d6a810c23183c
2012-03-15 07:36:47 -07:00

426 lines
12 KiB
C
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/*
* 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 VARIANCE_H
#define VARIANCE_H
#define prototype_sad(sym)\
unsigned int (sym)\
(\
const unsigned char *src_ptr, \
int source_stride, \
const unsigned char *ref_ptr, \
int ref_stride, \
int max_sad\
)
#define prototype_sad_multi_same_address(sym)\
void (sym)\
(\
const unsigned char *src_ptr, \
int source_stride, \
const unsigned char *ref_ptr, \
int ref_stride, \
unsigned int *sad_array\
)
#define prototype_sad_multi_same_address_1(sym)\
void (sym)\
(\
const unsigned char *src_ptr, \
int source_stride, \
const unsigned char *ref_ptr, \
int ref_stride, \
unsigned short *sad_array\
)
#define prototype_sad_multi_dif_address(sym)\
void (sym)\
(\
const unsigned char *src_ptr, \
int source_stride, \
unsigned char *ref_ptr[4], \
int ref_stride, \
unsigned int *sad_array\
)
#define prototype_variance(sym) \
unsigned int (sym) \
(\
const unsigned char *src_ptr, \
int source_stride, \
const unsigned char *ref_ptr, \
int ref_stride, \
unsigned int *sse\
)
#define prototype_variance2(sym) \
unsigned int (sym) \
(\
const unsigned char *src_ptr, \
int source_stride, \
const unsigned char *ref_ptr, \
int ref_stride, \
unsigned int *sse,\
int *sum\
)
#define prototype_subpixvariance(sym) \
unsigned int (sym) \
( \
const unsigned char *src_ptr, \
int source_stride, \
int xoffset, \
int yoffset, \
const unsigned char *ref_ptr, \
int Refstride, \
unsigned int *sse \
);
#define prototype_ssimpf(sym) \
void (sym) \
( \
unsigned char *s, \
int sp, \
unsigned char *r, \
int rp, \
unsigned long *sum_s, \
unsigned long *sum_r, \
unsigned long *sum_sq_s, \
unsigned long *sum_sq_r, \
unsigned long *sum_sxr \
);
#define prototype_getmbss(sym) unsigned int (sym)(const short *)
#define prototype_get16x16prederror(sym)\
unsigned int (sym)\
(\
const unsigned char *src_ptr, \
int source_stride, \
const unsigned char *ref_ptr, \
int ref_stride \
)
#if ARCH_X86 || ARCH_X86_64
#include "x86/variance_x86.h"
#endif
#if ARCH_ARM
#include "arm/variance_arm.h"
#endif
#ifndef vp8_variance_sad4x4
#define vp8_variance_sad4x4 vp8_sad4x4_c
#endif
extern prototype_sad(vp8_variance_sad4x4);
#ifndef vp8_variance_sad8x8
#define vp8_variance_sad8x8 vp8_sad8x8_c
#endif
extern prototype_sad(vp8_variance_sad8x8);
#ifndef vp8_variance_sad8x16
#define vp8_variance_sad8x16 vp8_sad8x16_c
#endif
extern prototype_sad(vp8_variance_sad8x16);
#ifndef vp8_variance_sad16x8
#define vp8_variance_sad16x8 vp8_sad16x8_c
#endif
extern prototype_sad(vp8_variance_sad16x8);
#ifndef vp8_variance_sad16x16
#define vp8_variance_sad16x16 vp8_sad16x16_c
#endif
extern prototype_sad(vp8_variance_sad16x16);
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#ifndef vp8_variance_sad16x16x3
#define vp8_variance_sad16x16x3 vp8_sad16x16x3_c
#endif
extern prototype_sad_multi_same_address(vp8_variance_sad16x16x3);
#ifndef vp8_variance_sad16x8x3
#define vp8_variance_sad16x8x3 vp8_sad16x8x3_c
#endif
extern prototype_sad_multi_same_address(vp8_variance_sad16x8x3);
#ifndef vp8_variance_sad8x8x3
#define vp8_variance_sad8x8x3 vp8_sad8x8x3_c
#endif
extern prototype_sad_multi_same_address(vp8_variance_sad8x8x3);
#ifndef vp8_variance_sad8x16x3
#define vp8_variance_sad8x16x3 vp8_sad8x16x3_c
#endif
extern prototype_sad_multi_same_address(vp8_variance_sad8x16x3);
#ifndef vp8_variance_sad4x4x3
#define vp8_variance_sad4x4x3 vp8_sad4x4x3_c
#endif
extern prototype_sad_multi_same_address(vp8_variance_sad4x4x3);
#ifndef vp8_variance_sad16x16x8
#define vp8_variance_sad16x16x8 vp8_sad16x16x8_c
#endif
extern prototype_sad_multi_same_address_1(vp8_variance_sad16x16x8);
#ifndef vp8_variance_sad16x8x8
#define vp8_variance_sad16x8x8 vp8_sad16x8x8_c
#endif
extern prototype_sad_multi_same_address_1(vp8_variance_sad16x8x8);
#ifndef vp8_variance_sad8x8x8
#define vp8_variance_sad8x8x8 vp8_sad8x8x8_c
#endif
extern prototype_sad_multi_same_address_1(vp8_variance_sad8x8x8);
#ifndef vp8_variance_sad8x16x8
#define vp8_variance_sad8x16x8 vp8_sad8x16x8_c
#endif
extern prototype_sad_multi_same_address_1(vp8_variance_sad8x16x8);
#ifndef vp8_variance_sad4x4x8
#define vp8_variance_sad4x4x8 vp8_sad4x4x8_c
#endif
extern prototype_sad_multi_same_address_1(vp8_variance_sad4x4x8);
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#ifndef vp8_variance_sad16x16x4d
#define vp8_variance_sad16x16x4d vp8_sad16x16x4d_c
#endif
extern prototype_sad_multi_dif_address(vp8_variance_sad16x16x4d);
#ifndef vp8_variance_sad16x8x4d
#define vp8_variance_sad16x8x4d vp8_sad16x8x4d_c
#endif
extern prototype_sad_multi_dif_address(vp8_variance_sad16x8x4d);
#ifndef vp8_variance_sad8x8x4d
#define vp8_variance_sad8x8x4d vp8_sad8x8x4d_c
#endif
extern prototype_sad_multi_dif_address(vp8_variance_sad8x8x4d);
#ifndef vp8_variance_sad8x16x4d
#define vp8_variance_sad8x16x4d vp8_sad8x16x4d_c
#endif
extern prototype_sad_multi_dif_address(vp8_variance_sad8x16x4d);
#ifndef vp8_variance_sad4x4x4d
#define vp8_variance_sad4x4x4d vp8_sad4x4x4d_c
#endif
extern prototype_sad_multi_dif_address(vp8_variance_sad4x4x4d);
#if ARCH_X86 || ARCH_X86_64
#ifndef vp8_variance_copy32xn
#define vp8_variance_copy32xn vp8_copy32xn_c
#endif
extern prototype_sad(vp8_variance_copy32xn);
#endif
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#ifndef vp8_variance_var4x4
#define vp8_variance_var4x4 vp8_variance4x4_c
#endif
extern prototype_variance(vp8_variance_var4x4);
#ifndef vp8_variance_var8x8
#define vp8_variance_var8x8 vp8_variance8x8_c
#endif
extern prototype_variance(vp8_variance_var8x8);
#ifndef vp8_variance_var8x16
#define vp8_variance_var8x16 vp8_variance8x16_c
#endif
extern prototype_variance(vp8_variance_var8x16);
#ifndef vp8_variance_var16x8
#define vp8_variance_var16x8 vp8_variance16x8_c
#endif
extern prototype_variance(vp8_variance_var16x8);
#ifndef vp8_variance_var16x16
#define vp8_variance_var16x16 vp8_variance16x16_c
#endif
extern prototype_variance(vp8_variance_var16x16);
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#ifndef vp8_variance_subpixvar4x4
#define vp8_variance_subpixvar4x4 vp8_sub_pixel_variance4x4_c
#endif
extern prototype_subpixvariance(vp8_variance_subpixvar4x4);
#ifndef vp8_variance_subpixvar8x8
#define vp8_variance_subpixvar8x8 vp8_sub_pixel_variance8x8_c
#endif
extern prototype_subpixvariance(vp8_variance_subpixvar8x8);
#ifndef vp8_variance_subpixvar8x16
#define vp8_variance_subpixvar8x16 vp8_sub_pixel_variance8x16_c
#endif
extern prototype_subpixvariance(vp8_variance_subpixvar8x16);
#ifndef vp8_variance_subpixvar16x8
#define vp8_variance_subpixvar16x8 vp8_sub_pixel_variance16x8_c
#endif
extern prototype_subpixvariance(vp8_variance_subpixvar16x8);
#ifndef vp8_variance_subpixvar16x16
#define vp8_variance_subpixvar16x16 vp8_sub_pixel_variance16x16_c
#endif
extern prototype_subpixvariance(vp8_variance_subpixvar16x16);
#ifndef vp8_variance_halfpixvar16x16_h
#define vp8_variance_halfpixvar16x16_h vp8_variance_halfpixvar16x16_h_c
#endif
extern prototype_variance(vp8_variance_halfpixvar16x16_h);
#ifndef vp8_variance_halfpixvar16x16_v
#define vp8_variance_halfpixvar16x16_v vp8_variance_halfpixvar16x16_v_c
#endif
extern prototype_variance(vp8_variance_halfpixvar16x16_v);
#ifndef vp8_variance_halfpixvar16x16_hv
#define vp8_variance_halfpixvar16x16_hv vp8_variance_halfpixvar16x16_hv_c
#endif
extern prototype_variance(vp8_variance_halfpixvar16x16_hv);
#ifndef vp8_variance_subpixmse16x16
#define vp8_variance_subpixmse16x16 vp8_sub_pixel_mse16x16_c
#endif
extern prototype_subpixvariance(vp8_variance_subpixmse16x16);
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#ifndef vp8_variance_getmbss
#define vp8_variance_getmbss vp8_get_mb_ss_c
#endif
extern prototype_getmbss(vp8_variance_getmbss);
#ifndef vp8_variance_mse16x16
#define vp8_variance_mse16x16 vp8_mse16x16_c
#endif
extern prototype_variance(vp8_variance_mse16x16);
#ifndef vp8_ssimpf_8x8
#define vp8_ssimpf_8x8 vp8_ssim_parms_8x8_c
#endif
extern prototype_ssimpf(vp8_ssimpf_8x8)
#ifndef vp8_ssimpf_16x16
#define vp8_ssimpf_16x16 vp8_ssim_parms_16x16_c
#endif
extern prototype_ssimpf(vp8_ssimpf_16x16)
#ifndef vp8_variance_satd16x16
#define vp8_variance_satd16x16 vp8_satd16x16_c
#endif
extern prototype_variance(vp8_variance_satd16x16);
typedef prototype_sad(*vp8_sad_fn_t);
typedef prototype_sad_multi_same_address(*vp8_sad_multi_fn_t);
typedef prototype_sad_multi_same_address_1(*vp8_sad_multi1_fn_t);
typedef prototype_sad_multi_dif_address(*vp8_sad_multi_d_fn_t);
typedef prototype_variance(*vp8_variance_fn_t);
typedef prototype_variance2(*vp8_variance2_fn_t);
typedef prototype_subpixvariance(*vp8_subpixvariance_fn_t);
typedef prototype_getmbss(*vp8_getmbss_fn_t);
typedef prototype_ssimpf(*vp8_ssimpf_fn_t);
typedef prototype_get16x16prederror(*vp8_get16x16prederror_fn_t);
typedef struct
{
vp8_sad_fn_t sad4x4;
vp8_sad_fn_t sad8x8;
vp8_sad_fn_t sad8x16;
vp8_sad_fn_t sad16x8;
vp8_sad_fn_t sad16x16;
vp8_variance_fn_t var4x4;
vp8_variance_fn_t var8x8;
vp8_variance_fn_t var8x16;
vp8_variance_fn_t var16x8;
vp8_variance_fn_t var16x16;
vp8_subpixvariance_fn_t subpixvar4x4;
vp8_subpixvariance_fn_t subpixvar8x8;
vp8_subpixvariance_fn_t subpixvar8x16;
vp8_subpixvariance_fn_t subpixvar16x8;
vp8_subpixvariance_fn_t subpixvar16x16;
vp8_variance_fn_t halfpixvar16x16_h;
vp8_variance_fn_t halfpixvar16x16_v;
vp8_variance_fn_t halfpixvar16x16_hv;
vp8_subpixvariance_fn_t subpixmse16x16;
vp8_getmbss_fn_t getmbss;
vp8_variance_fn_t mse16x16;
vp8_sad_multi_fn_t sad16x16x3;
vp8_sad_multi_fn_t sad16x8x3;
vp8_sad_multi_fn_t sad8x16x3;
vp8_sad_multi_fn_t sad8x8x3;
vp8_sad_multi_fn_t sad4x4x3;
vp8_sad_multi1_fn_t sad16x16x8;
vp8_sad_multi1_fn_t sad16x8x8;
vp8_sad_multi1_fn_t sad8x16x8;
vp8_sad_multi1_fn_t sad8x8x8;
vp8_sad_multi1_fn_t sad4x4x8;
vp8_sad_multi_d_fn_t sad16x16x4d;
vp8_sad_multi_d_fn_t sad16x8x4d;
vp8_sad_multi_d_fn_t sad8x16x4d;
vp8_sad_multi_d_fn_t sad8x8x4d;
vp8_sad_multi_d_fn_t sad4x4x4d;
#if ARCH_X86 || ARCH_X86_64
vp8_sad_fn_t copy32xn;
#endif
#if CONFIG_INTERNAL_STATS
vp8_ssimpf_fn_t ssimpf_8x8;
vp8_ssimpf_fn_t ssimpf_16x16;
#endif
vp8_variance_fn_t satd16x16;
} vp8_variance_rtcd_vtable_t;
typedef struct
{
vp8_sad_fn_t sdf;
vp8_variance_fn_t vf;
vp8_subpixvariance_fn_t svf;
vp8_variance_fn_t svf_halfpix_h;
vp8_variance_fn_t svf_halfpix_v;
vp8_variance_fn_t svf_halfpix_hv;
vp8_sad_multi_fn_t sdx3f;
vp8_sad_multi1_fn_t sdx8f;
vp8_sad_multi_d_fn_t sdx4df;
#if ARCH_X86 || ARCH_X86_64
vp8_sad_fn_t copymem;
#endif
} vp8_variance_fn_ptr_t;
#if CONFIG_RUNTIME_CPU_DETECT
#define VARIANCE_INVOKE(ctx,fn) (ctx)->fn
#define SSIMPF_INVOKE(ctx,fn) (ctx)->ssimpf_##fn
#else
#define VARIANCE_INVOKE(ctx,fn) vp8_variance_##fn
#define SSIMPF_INVOKE(ctx,fn) vp8_ssimpf_##fn
#endif
#endif
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