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e71f26086a
FFmpeg/libavcodec/h264_cabac.c
Michael Niedermayer 59eb12faff Merge remote branch 'qatar/master' 
* qatar/master: (30 commits)
  AVOptions: make default_val a union, as proposed in AVOption2.
  arm/h264pred: add missing argument type.
  h264dsp_mmx: place bracket outside #if/#endif block.
  lavf/utils: fix ff_interleave_compare_dts corner case.
  fate: add 10-bit H264 tests.
  h264: do not print "too many references" warning for intra-only.
  Enable decoding of high bit depth h264.
  Adds 8-, 9- and 10-bit versions of some of the functions used by the h264 decoder.
  Add support for higher QP values in h264.
  Add the notion of pixel size in h264 related functions.
  Make the h264 loop filter bit depth aware.
  Template dsputil_template.c with respect to pixel size, etc.
  Template h264idct_template.c with respect to pixel size, etc.
  Preparatory patch for high bit depth h264 decoding support.
  Move some functions in dsputil.c into a new file dsputil_template.c.
  Move the functions in h264idct into a new file h264idct_template.c.
  Move the functions in h264pred.c into a new file h264pred_template.c.
  Preparatory patch for high bit depth h264 decoding support.
  Add pixel formats for 9- and 10-bit yuv420p.
  Choose h264 chroma dc dequant function dynamically.
  ...

Conflicts:
	doc/APIchanges
	ffmpeg.c
	ffplay.c
	libavcodec/alpha/dsputil_alpha.c
	libavcodec/arm/dsputil_init_arm.c
	libavcodec/arm/dsputil_init_armv6.c
	libavcodec/arm/dsputil_init_neon.c
	libavcodec/arm/dsputil_iwmmxt.c
	libavcodec/arm/h264pred_init_arm.c
	libavcodec/bfin/dsputil_bfin.c
	libavcodec/dsputil.c
	libavcodec/h264.c
	libavcodec/h264.h
	libavcodec/h264_cabac.c
	libavcodec/h264_cavlc.c
	libavcodec/h264_loopfilter.c
	libavcodec/h264_ps.c
	libavcodec/h264_refs.c
	libavcodec/h264dsp.c
	libavcodec/h264idct.c
	libavcodec/h264pred.c
	libavcodec/mlib/dsputil_mlib.c
	libavcodec/options.c
	libavcodec/ppc/dsputil_altivec.c
	libavcodec/ppc/dsputil_ppc.c
	libavcodec/ppc/h264_altivec.c
	libavcodec/ps2/dsputil_mmi.c
	libavcodec/sh4/dsputil_align.c
	libavcodec/sh4/dsputil_sh4.c
	libavcodec/sparc/dsputil_vis.c
	libavcodec/utils.c
	libavcodec/version.h
	libavcodec/x86/dsputil_mmx.c
	libavformat/options.c
	libavformat/utils.c
	libavutil/pixfmt.h
	libswscale/swscale.c
	libswscale/swscale_internal.h
	libswscale/swscale_template.c
	tests/ref/seek/lavf_avi

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-05-11 05:47:02 +02:00

1745 lines
72 KiB
C
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/*
* H.26L/H.264/AVC/JVT/14496-10/... cabac decoding
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* H.264 / AVC / MPEG4 part10 cabac decoding.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
#define CABAC 1
#include "internal.h"
#include "dsputil.h"
#include "avcodec.h"
#include "h264.h"
#include "h264data.h"
#include "h264_mvpred.h"
#include "golomb.h"
#include "cabac.h"
#if ARCH_X86
#include "x86/h264_i386.h"
#endif
//#undef NDEBUG
#include <assert.h>
/* Cabac pre state table */
static const int8_t cabac_context_init_I[460][2] =
{
/* 0 - 10 */
{ 20, -15 }, { 2, 54 }, { 3, 74 }, { 20, -15 },
{ 2, 54 }, { 3, 74 }, { -28,127 }, { -23, 104 },
{ -6, 53 }, { -1, 54 }, { 7, 51 },
/* 11 - 23 unsused for I */
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 },
/* 24- 39 */
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
/* 40 - 53 */
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 },
/* 54 - 59 */
{ 0, 0 }, { 0, 0 }, { 0, 0 }, { 0, 0 },
{ 0, 0 }, { 0, 0 },
/* 60 - 69 */
{ 0, 41 }, { 0, 63 }, { 0, 63 }, { 0, 63 },
{ -9, 83 }, { 4, 86 }, { 0, 97 }, { -7, 72 },
{ 13, 41 }, { 3, 62 },
/* 70 -> 87 */
{ 0, 11 }, { 1, 55 }, { 0, 69 }, { -17, 127 },
{ -13, 102 },{ 0, 82 }, { -7, 74 }, { -21, 107 },
{ -27, 127 },{ -31, 127 },{ -24, 127 }, { -18, 95 },
{ -27, 127 },{ -21, 114 },{ -30, 127 }, { -17, 123 },
{ -12, 115 },{ -16, 122 },
/* 88 -> 104 */
{ -11, 115 },{ -12, 63 }, { -2, 68 }, { -15, 84 },
{ -13, 104 },{ -3, 70 }, { -8, 93 }, { -10, 90 },
{ -30, 127 },{ -1, 74 }, { -6, 97 }, { -7, 91 },
{ -20, 127 },{ -4, 56 }, { -5, 82 }, { -7, 76 },
{ -22, 125 },
/* 105 -> 135 */
{ -7, 93 }, { -11, 87 }, { -3, 77 }, { -5, 71 },
{ -4, 63 }, { -4, 68 }, { -12, 84 }, { -7, 62 },
{ -7, 65 }, { 8, 61 }, { 5, 56 }, { -2, 66 },
{ 1, 64 }, { 0, 61 }, { -2, 78 }, { 1, 50 },
{ 7, 52 }, { 10, 35 }, { 0, 44 }, { 11, 38 },
{ 1, 45 }, { 0, 46 }, { 5, 44 }, { 31, 17 },
{ 1, 51 }, { 7, 50 }, { 28, 19 }, { 16, 33 },
{ 14, 62 }, { -13, 108 },{ -15, 100 },
/* 136 -> 165 */
{ -13, 101 },{ -13, 91 }, { -12, 94 }, { -10, 88 },
{ -16, 84 }, { -10, 86 }, { -7, 83 }, { -13, 87 },
{ -19, 94 }, { 1, 70 }, { 0, 72 }, { -5, 74 },
{ 18, 59 }, { -8, 102 }, { -15, 100 }, { 0, 95 },
{ -4, 75 }, { 2, 72 }, { -11, 75 }, { -3, 71 },
{ 15, 46 }, { -13, 69 }, { 0, 62 }, { 0, 65 },
{ 21, 37 }, { -15, 72 }, { 9, 57 }, { 16, 54 },
{ 0, 62 }, { 12, 72 },
/* 166 -> 196 */
{ 24, 0 }, { 15, 9 }, { 8, 25 }, { 13, 18 },
{ 15, 9 }, { 13, 19 }, { 10, 37 }, { 12, 18 },
{ 6, 29 }, { 20, 33 }, { 15, 30 }, { 4, 45 },
{ 1, 58 }, { 0, 62 }, { 7, 61 }, { 12, 38 },
{ 11, 45 }, { 15, 39 }, { 11, 42 }, { 13, 44 },
{ 16, 45 }, { 12, 41 }, { 10, 49 }, { 30, 34 },
{ 18, 42 }, { 10, 55 }, { 17, 51 }, { 17, 46 },
{ 0, 89 }, { 26, -19 }, { 22, -17 },
/* 197 -> 226 */
{ 26, -17 }, { 30, -25 }, { 28, -20 }, { 33, -23 },
{ 37, -27 }, { 33, -23 }, { 40, -28 }, { 38, -17 },
{ 33, -11 }, { 40, -15 }, { 41, -6 }, { 38, 1 },
{ 41, 17 }, { 30, -6 }, { 27, 3 }, { 26, 22 },
{ 37, -16 }, { 35, -4 }, { 38, -8 }, { 38, -3 },
{ 37, 3 }, { 38, 5 }, { 42, 0 }, { 35, 16 },
{ 39, 22 }, { 14, 48 }, { 27, 37 }, { 21, 60 },
{ 12, 68 }, { 2, 97 },
/* 227 -> 251 */
{ -3, 71 }, { -6, 42 }, { -5, 50 }, { -3, 54 },
{ -2, 62 }, { 0, 58 }, { 1, 63 }, { -2, 72 },
{ -1, 74 }, { -9, 91 }, { -5, 67 }, { -5, 27 },
{ -3, 39 }, { -2, 44 }, { 0, 46 }, { -16, 64 },
{ -8, 68 }, { -10, 78 }, { -6, 77 }, { -10, 86 },
{ -12, 92 }, { -15, 55 }, { -10, 60 }, { -6, 62 },
{ -4, 65 },
/* 252 -> 275 */
{ -12, 73 }, { -8, 76 }, { -7, 80 }, { -9, 88 },
{ -17, 110 },{ -11, 97 }, { -20, 84 }, { -11, 79 },
{ -6, 73 }, { -4, 74 }, { -13, 86 }, { -13, 96 },
{ -11, 97 }, { -19, 117 },{ -8, 78 }, { -5, 33 },
{ -4, 48 }, { -2, 53 }, { -3, 62 }, { -13, 71 },
{ -10, 79 }, { -12, 86 }, { -13, 90 }, { -14, 97 },
/* 276 a bit special (not used, bypass is used instead) */
{ 0, 0 },
/* 277 -> 307 */
{ -6, 93 }, { -6, 84 }, { -8, 79 }, { 0, 66 },
{ -1, 71 }, { 0, 62 }, { -2, 60 }, { -2, 59 },
{ -5, 75 }, { -3, 62 }, { -4, 58 }, { -9, 66 },
{ -1, 79 }, { 0, 71 }, { 3, 68 }, { 10, 44 },
{ -7, 62 }, { 15, 36 }, { 14, 40 }, { 16, 27 },
{ 12, 29 }, { 1, 44 }, { 20, 36 }, { 18, 32 },
{ 5, 42 }, { 1, 48 }, { 10, 62 }, { 17, 46 },
{ 9, 64 }, { -12, 104 },{ -11, 97 },
/* 308 -> 337 */
{ -16, 96 }, { -7, 88 }, { -8, 85 }, { -7, 85 },
{ -9, 85 }, { -13, 88 }, { 4, 66 }, { -3, 77 },
{ -3, 76 }, { -6, 76 }, { 10, 58 }, { -1, 76 },
{ -1, 83 }, { -7, 99 }, { -14, 95 }, { 2, 95 },
{ 0, 76 }, { -5, 74 }, { 0, 70 }, { -11, 75 },
{ 1, 68 }, { 0, 65 }, { -14, 73 }, { 3, 62 },
{ 4, 62 }, { -1, 68 }, { -13, 75 }, { 11, 55 },
{ 5, 64 }, { 12, 70 },
/* 338 -> 368 */
{ 15, 6 }, { 6, 19 }, { 7, 16 }, { 12, 14 },
{ 18, 13 }, { 13, 11 }, { 13, 15 }, { 15, 16 },
{ 12, 23 }, { 13, 23 }, { 15, 20 }, { 14, 26 },
{ 14, 44 }, { 17, 40 }, { 17, 47 }, { 24, 17 },
{ 21, 21 }, { 25, 22 }, { 31, 27 }, { 22, 29 },
{ 19, 35 }, { 14, 50 }, { 10, 57 }, { 7, 63 },
{ -2, 77 }, { -4, 82 }, { -3, 94 }, { 9, 69 },
{ -12, 109 },{ 36, -35 }, { 36, -34 },
/* 369 -> 398 */
{ 32, -26 }, { 37, -30 }, { 44, -32 }, { 34, -18 },
{ 34, -15 }, { 40, -15 }, { 33, -7 }, { 35, -5 },
{ 33, 0 }, { 38, 2 }, { 33, 13 }, { 23, 35 },
{ 13, 58 }, { 29, -3 }, { 26, 0 }, { 22, 30 },
{ 31, -7 }, { 35, -15 }, { 34, -3 }, { 34, 3 },
{ 36, -1 }, { 34, 5 }, { 32, 11 }, { 35, 5 },
{ 34, 12 }, { 39, 11 }, { 30, 29 }, { 34, 26 },
{ 29, 39 }, { 19, 66 },
/* 399 -> 435 */
{ 31, 21 }, { 31, 31 }, { 25, 50 },
{ -17, 120 }, { -20, 112 }, { -18, 114 }, { -11, 85 },
{ -15, 92 }, { -14, 89 }, { -26, 71 }, { -15, 81 },
{ -14, 80 }, { 0, 68 }, { -14, 70 }, { -24, 56 },
{ -23, 68 }, { -24, 50 }, { -11, 74 }, { 23, -13 },
{ 26, -13 }, { 40, -15 }, { 49, -14 }, { 44, 3 },
{ 45, 6 }, { 44, 34 }, { 33, 54 }, { 19, 82 },
{ -3, 75 }, { -1, 23 }, { 1, 34 }, { 1, 43 },
{ 0, 54 }, { -2, 55 }, { 0, 61 }, { 1, 64 },
{ 0, 68 }, { -9, 92 },
/* 436 -> 459 */
{ -14, 106 }, { -13, 97 }, { -15, 90 }, { -12, 90 },
{ -18, 88 }, { -10, 73 }, { -9, 79 }, { -14, 86 },
{ -10, 73 }, { -10, 70 }, { -10, 69 }, { -5, 66 },
{ -9, 64 }, { -5, 58 }, { 2, 59 }, { 21, -10 },
{ 24, -11 }, { 28, -8 }, { 28, -1 }, { 29, 3 },
{ 29, 9 }, { 35, 20 }, { 29, 36 }, { 14, 67 }
};
static const int8_t cabac_context_init_PB[3][460][2] =
{
/* i_cabac_init_idc == 0 */
{
/* 0 - 10 */
{ 20, -15 }, { 2, 54 }, { 3, 74 }, { 20, -15 },
{ 2, 54 }, { 3, 74 }, { -28, 127 }, { -23, 104 },
{ -6, 53 }, { -1, 54 }, { 7, 51 },
/* 11 - 23 */
{ 23, 33 }, { 23, 2 }, { 21, 0 }, { 1, 9 },
{ 0, 49 }, { -37, 118 }, { 5, 57 }, { -13, 78 },
{ -11, 65 }, { 1, 62 }, { 12, 49 }, { -4, 73 },
{ 17, 50 },
/* 24 - 39 */
{ 18, 64 }, { 9, 43 }, { 29, 0 }, { 26, 67 },
{ 16, 90 }, { 9, 104 }, { -46, 127 }, { -20, 104 },
{ 1, 67 }, { -13, 78 }, { -11, 65 }, { 1, 62 },
{ -6, 86 }, { -17, 95 }, { -6, 61 }, { 9, 45 },
/* 40 - 53 */
{ -3, 69 }, { -6, 81 }, { -11, 96 }, { 6, 55 },
{ 7, 67 }, { -5, 86 }, { 2, 88 }, { 0, 58 },
{ -3, 76 }, { -10, 94 }, { 5, 54 }, { 4, 69 },
{ -3, 81 }, { 0, 88 },
/* 54 - 59 */
{ -7, 67 }, { -5, 74 }, { -4, 74 }, { -5, 80 },
{ -7, 72 }, { 1, 58 },
/* 60 - 69 */
{ 0, 41 }, { 0, 63 }, { 0, 63 }, { 0, 63 },
{ -9, 83 }, { 4, 86 }, { 0, 97 }, { -7, 72 },
{ 13, 41 }, { 3, 62 },
/* 70 - 87 */
{ 0, 45 }, { -4, 78 }, { -3, 96 }, { -27, 126 },
{ -28, 98 }, { -25, 101 }, { -23, 67 }, { -28, 82 },
{ -20, 94 }, { -16, 83 }, { -22, 110 }, { -21, 91 },
{ -18, 102 }, { -13, 93 }, { -29, 127 }, { -7, 92 },
{ -5, 89 }, { -7, 96 }, { -13, 108 }, { -3, 46 },
{ -1, 65 }, { -1, 57 }, { -9, 93 }, { -3, 74 },
{ -9, 92 }, { -8, 87 }, { -23, 126 }, { 5, 54 },
{ 6, 60 }, { 6, 59 }, { 6, 69 }, { -1, 48 },
{ 0, 68 }, { -4, 69 }, { -8, 88 },
/* 105 -> 165 */
{ -2, 85 }, { -6, 78 }, { -1, 75 }, { -7, 77 },
{ 2, 54 }, { 5, 50 }, { -3, 68 }, { 1, 50 },
{ 6, 42 }, { -4, 81 }, { 1, 63 }, { -4, 70 },
{ 0, 67 }, { 2, 57 }, { -2, 76 }, { 11, 35 },
{ 4, 64 }, { 1, 61 }, { 11, 35 }, { 18, 25 },
{ 12, 24 }, { 13, 29 }, { 13, 36 }, { -10, 93 },
{ -7, 73 }, { -2, 73 }, { 13, 46 }, { 9, 49 },
{ -7, 100 }, { 9, 53 }, { 2, 53 }, { 5, 53 },
{ -2, 61 }, { 0, 56 }, { 0, 56 }, { -13, 63 },
{ -5, 60 }, { -1, 62 }, { 4, 57 }, { -6, 69 },
{ 4, 57 }, { 14, 39 }, { 4, 51 }, { 13, 68 },
{ 3, 64 }, { 1, 61 }, { 9, 63 }, { 7, 50 },
{ 16, 39 }, { 5, 44 }, { 4, 52 }, { 11, 48 },
{ -5, 60 }, { -1, 59 }, { 0, 59 }, { 22, 33 },
{ 5, 44 }, { 14, 43 }, { -1, 78 }, { 0, 60 },
{ 9, 69 },
/* 166 - 226 */
{ 11, 28 }, { 2, 40 }, { 3, 44 }, { 0, 49 },
{ 0, 46 }, { 2, 44 }, { 2, 51 }, { 0, 47 },
{ 4, 39 }, { 2, 62 }, { 6, 46 }, { 0, 54 },
{ 3, 54 }, { 2, 58 }, { 4, 63 }, { 6, 51 },
{ 6, 57 }, { 7, 53 }, { 6, 52 }, { 6, 55 },
{ 11, 45 }, { 14, 36 }, { 8, 53 }, { -1, 82 },
{ 7, 55 }, { -3, 78 }, { 15, 46 }, { 22, 31 },
{ -1, 84 }, { 25, 7 }, { 30, -7 }, { 28, 3 },
{ 28, 4 }, { 32, 0 }, { 34, -1 }, { 30, 6 },
{ 30, 6 }, { 32, 9 }, { 31, 19 }, { 26, 27 },
{ 26, 30 }, { 37, 20 }, { 28, 34 }, { 17, 70 },
{ 1, 67 }, { 5, 59 }, { 9, 67 }, { 16, 30 },
{ 18, 32 }, { 18, 35 }, { 22, 29 }, { 24, 31 },
{ 23, 38 }, { 18, 43 }, { 20, 41 }, { 11, 63 },
{ 9, 59 }, { 9, 64 }, { -1, 94 }, { -2, 89 },
{ -9, 108 },
/* 227 - 275 */
{ -6, 76 }, { -2, 44 }, { 0, 45 }, { 0, 52 },
{ -3, 64 }, { -2, 59 }, { -4, 70 }, { -4, 75 },
{ -8, 82 }, { -17, 102 }, { -9, 77 }, { 3, 24 },
{ 0, 42 }, { 0, 48 }, { 0, 55 }, { -6, 59 },
{ -7, 71 }, { -12, 83 }, { -11, 87 }, { -30, 119 },
{ 1, 58 }, { -3, 29 }, { -1, 36 }, { 1, 38 },
{ 2, 43 }, { -6, 55 }, { 0, 58 }, { 0, 64 },
{ -3, 74 }, { -10, 90 }, { 0, 70 }, { -4, 29 },
{ 5, 31 }, { 7, 42 }, { 1, 59 }, { -2, 58 },
{ -3, 72 }, { -3, 81 }, { -11, 97 }, { 0, 58 },
{ 8, 5 }, { 10, 14 }, { 14, 18 }, { 13, 27 },
{ 2, 40 }, { 0, 58 }, { -3, 70 }, { -6, 79 },
{ -8, 85 },
/* 276 a bit special (not used, bypass is used instead) */
{ 0, 0 },
/* 277 - 337 */
{ -13, 106 }, { -16, 106 }, { -10, 87 }, { -21, 114 },
{ -18, 110 }, { -14, 98 }, { -22, 110 }, { -21, 106 },
{ -18, 103 }, { -21, 107 }, { -23, 108 }, { -26, 112 },
{ -10, 96 }, { -12, 95 }, { -5, 91 }, { -9, 93 },
{ -22, 94 }, { -5, 86 }, { 9, 67 }, { -4, 80 },
{ -10, 85 }, { -1, 70 }, { 7, 60 }, { 9, 58 },
{ 5, 61 }, { 12, 50 }, { 15, 50 }, { 18, 49 },
{ 17, 54 }, { 10, 41 }, { 7, 46 }, { -1, 51 },
{ 7, 49 }, { 8, 52 }, { 9, 41 }, { 6, 47 },
{ 2, 55 }, { 13, 41 }, { 10, 44 }, { 6, 50 },
{ 5, 53 }, { 13, 49 }, { 4, 63 }, { 6, 64 },
{ -2, 69 }, { -2, 59 }, { 6, 70 }, { 10, 44 },
{ 9, 31 }, { 12, 43 }, { 3, 53 }, { 14, 34 },
{ 10, 38 }, { -3, 52 }, { 13, 40 }, { 17, 32 },
{ 7, 44 }, { 7, 38 }, { 13, 50 }, { 10, 57 },
{ 26, 43 },
/* 338 - 398 */
{ 14, 11 }, { 11, 14 }, { 9, 11 }, { 18, 11 },
{ 21, 9 }, { 23, -2 }, { 32, -15 }, { 32, -15 },
{ 34, -21 }, { 39, -23 }, { 42, -33 }, { 41, -31 },
{ 46, -28 }, { 38, -12 }, { 21, 29 }, { 45, -24 },
{ 53, -45 }, { 48, -26 }, { 65, -43 }, { 43, -19 },
{ 39, -10 }, { 30, 9 }, { 18, 26 }, { 20, 27 },
{ 0, 57 }, { -14, 82 }, { -5, 75 }, { -19, 97 },
{ -35, 125 }, { 27, 0 }, { 28, 0 }, { 31, -4 },
{ 27, 6 }, { 34, 8 }, { 30, 10 }, { 24, 22 },
{ 33, 19 }, { 22, 32 }, { 26, 31 }, { 21, 41 },
{ 26, 44 }, { 23, 47 }, { 16, 65 }, { 14, 71 },
{ 8, 60 }, { 6, 63 }, { 17, 65 }, { 21, 24 },
{ 23, 20 }, { 26, 23 }, { 27, 32 }, { 28, 23 },
{ 28, 24 }, { 23, 40 }, { 24, 32 }, { 28, 29 },
{ 23, 42 }, { 19, 57 }, { 22, 53 }, { 22, 61 },
{ 11, 86 },
/* 399 - 435 */
{ 12, 40 }, { 11, 51 }, { 14, 59 },
{ -4, 79 }, { -7, 71 }, { -5, 69 }, { -9, 70 },
{ -8, 66 }, { -10, 68 }, { -19, 73 }, { -12, 69 },
{ -16, 70 }, { -15, 67 }, { -20, 62 }, { -19, 70 },
{ -16, 66 }, { -22, 65 }, { -20, 63 }, { 9, -2 },
{ 26, -9 }, { 33, -9 }, { 39, -7 }, { 41, -2 },
{ 45, 3 }, { 49, 9 }, { 45, 27 }, { 36, 59 },
{ -6, 66 }, { -7, 35 }, { -7, 42 }, { -8, 45 },
{ -5, 48 }, { -12, 56 }, { -6, 60 }, { -5, 62 },
{ -8, 66 }, { -8, 76 },
/* 436 - 459 */
{ -5, 85 }, { -6, 81 }, { -10, 77 }, { -7, 81 },
{ -17, 80 }, { -18, 73 }, { -4, 74 }, { -10, 83 },
{ -9, 71 }, { -9, 67 }, { -1, 61 }, { -8, 66 },
{ -14, 66 }, { 0, 59 }, { 2, 59 }, { 21, -13 },
{ 33, -14 }, { 39, -7 }, { 46, -2 }, { 51, 2 },
{ 60, 6 }, { 61, 17 }, { 55, 34 }, { 42, 62 },
},
/* i_cabac_init_idc == 1 */
{
/* 0 - 10 */
{ 20, -15 }, { 2, 54 }, { 3, 74 }, { 20, -15 },
{ 2, 54 }, { 3, 74 }, { -28, 127 }, { -23, 104 },
{ -6, 53 }, { -1, 54 }, { 7, 51 },
/* 11 - 23 */
{ 22, 25 }, { 34, 0 }, { 16, 0 }, { -2, 9 },
{ 4, 41 }, { -29, 118 }, { 2, 65 }, { -6, 71 },
{ -13, 79 }, { 5, 52 }, { 9, 50 }, { -3, 70 },
{ 10, 54 },
/* 24 - 39 */
{ 26, 34 }, { 19, 22 }, { 40, 0 }, { 57, 2 },
{ 41, 36 }, { 26, 69 }, { -45, 127 }, { -15, 101 },
{ -4, 76 }, { -6, 71 }, { -13, 79 }, { 5, 52 },
{ 6, 69 }, { -13, 90 }, { 0, 52 }, { 8, 43 },
/* 40 - 53 */
{ -2, 69 },{ -5, 82 },{ -10, 96 },{ 2, 59 },
{ 2, 75 },{ -3, 87 },{ -3, 100 },{ 1, 56 },
{ -3, 74 },{ -6, 85 },{ 0, 59 },{ -3, 81 },
{ -7, 86 },{ -5, 95 },
/* 54 - 59 */
{ -1, 66 },{ -1, 77 },{ 1, 70 },{ -2, 86 },
{ -5, 72 },{ 0, 61 },
/* 60 - 69 */
{ 0, 41 }, { 0, 63 }, { 0, 63 }, { 0, 63 },
{ -9, 83 }, { 4, 86 }, { 0, 97 }, { -7, 72 },
{ 13, 41 }, { 3, 62 },
/* 70 - 104 */
{ 13, 15 }, { 7, 51 }, { 2, 80 }, { -39, 127 },
{ -18, 91 }, { -17, 96 }, { -26, 81 }, { -35, 98 },
{ -24, 102 }, { -23, 97 }, { -27, 119 }, { -24, 99 },
{ -21, 110 }, { -18, 102 }, { -36, 127 }, { 0, 80 },
{ -5, 89 }, { -7, 94 }, { -4, 92 }, { 0, 39 },
{ 0, 65 }, { -15, 84 }, { -35, 127 }, { -2, 73 },
{ -12, 104 }, { -9, 91 }, { -31, 127 }, { 3, 55 },
{ 7, 56 }, { 7, 55 }, { 8, 61 }, { -3, 53 },
{ 0, 68 }, { -7, 74 }, { -9, 88 },
/* 105 -> 165 */
{ -13, 103 }, { -13, 91 }, { -9, 89 }, { -14, 92 },
{ -8, 76 }, { -12, 87 }, { -23, 110 }, { -24, 105 },
{ -10, 78 }, { -20, 112 }, { -17, 99 }, { -78, 127 },
{ -70, 127 }, { -50, 127 }, { -46, 127 }, { -4, 66 },
{ -5, 78 }, { -4, 71 }, { -8, 72 }, { 2, 59 },
{ -1, 55 }, { -7, 70 }, { -6, 75 }, { -8, 89 },
{ -34, 119 }, { -3, 75 }, { 32, 20 }, { 30, 22 },
{ -44, 127 }, { 0, 54 }, { -5, 61 }, { 0, 58 },
{ -1, 60 }, { -3, 61 }, { -8, 67 }, { -25, 84 },
{ -14, 74 }, { -5, 65 }, { 5, 52 }, { 2, 57 },
{ 0, 61 }, { -9, 69 }, { -11, 70 }, { 18, 55 },
{ -4, 71 }, { 0, 58 }, { 7, 61 }, { 9, 41 },
{ 18, 25 }, { 9, 32 }, { 5, 43 }, { 9, 47 },
{ 0, 44 }, { 0, 51 }, { 2, 46 }, { 19, 38 },
{ -4, 66 }, { 15, 38 }, { 12, 42 }, { 9, 34 },
{ 0, 89 },
/* 166 - 226 */
{ 4, 45 }, { 10, 28 }, { 10, 31 }, { 33, -11 },
{ 52, -43 }, { 18, 15 }, { 28, 0 }, { 35, -22 },
{ 38, -25 }, { 34, 0 }, { 39, -18 }, { 32, -12 },
{ 102, -94 }, { 0, 0 }, { 56, -15 }, { 33, -4 },
{ 29, 10 }, { 37, -5 }, { 51, -29 }, { 39, -9 },
{ 52, -34 }, { 69, -58 }, { 67, -63 }, { 44, -5 },
{ 32, 7 }, { 55, -29 }, { 32, 1 }, { 0, 0 },
{ 27, 36 }, { 33, -25 }, { 34, -30 }, { 36, -28 },
{ 38, -28 }, { 38, -27 }, { 34, -18 }, { 35, -16 },
{ 34, -14 }, { 32, -8 }, { 37, -6 }, { 35, 0 },
{ 30, 10 }, { 28, 18 }, { 26, 25 }, { 29, 41 },
{ 0, 75 }, { 2, 72 }, { 8, 77 }, { 14, 35 },
{ 18, 31 }, { 17, 35 }, { 21, 30 }, { 17, 45 },
{ 20, 42 }, { 18, 45 }, { 27, 26 }, { 16, 54 },
{ 7, 66 }, { 16, 56 }, { 11, 73 }, { 10, 67 },
{ -10, 116 },
/* 227 - 275 */
{ -23, 112 }, { -15, 71 }, { -7, 61 }, { 0, 53 },
{ -5, 66 }, { -11, 77 }, { -9, 80 }, { -9, 84 },
{ -10, 87 }, { -34, 127 }, { -21, 101 }, { -3, 39 },
{ -5, 53 }, { -7, 61 }, { -11, 75 }, { -15, 77 },
{ -17, 91 }, { -25, 107 }, { -25, 111 }, { -28, 122 },
{ -11, 76 }, { -10, 44 }, { -10, 52 }, { -10, 57 },
{ -9, 58 }, { -16, 72 }, { -7, 69 }, { -4, 69 },
{ -5, 74 }, { -9, 86 }, { 2, 66 }, { -9, 34 },
{ 1, 32 }, { 11, 31 }, { 5, 52 }, { -2, 55 },
{ -2, 67 }, { 0, 73 }, { -8, 89 }, { 3, 52 },
{ 7, 4 }, { 10, 8 }, { 17, 8 }, { 16, 19 },
{ 3, 37 }, { -1, 61 }, { -5, 73 }, { -1, 70 },
{ -4, 78 },
/* 276 a bit special (not used, bypass is used instead) */
{ 0, 0 },
/* 277 - 337 */
{ -21, 126 }, { -23, 124 }, { -20, 110 }, { -26, 126 },
{ -25, 124 }, { -17, 105 }, { -27, 121 }, { -27, 117 },
{ -17, 102 }, { -26, 117 }, { -27, 116 }, { -33, 122 },
{ -10, 95 }, { -14, 100 }, { -8, 95 }, { -17, 111 },
{ -28, 114 }, { -6, 89 }, { -2, 80 }, { -4, 82 },
{ -9, 85 }, { -8, 81 }, { -1, 72 }, { 5, 64 },
{ 1, 67 }, { 9, 56 }, { 0, 69 }, { 1, 69 },
{ 7, 69 }, { -7, 69 }, { -6, 67 }, { -16, 77 },
{ -2, 64 }, { 2, 61 }, { -6, 67 }, { -3, 64 },
{ 2, 57 }, { -3, 65 }, { -3, 66 }, { 0, 62 },
{ 9, 51 }, { -1, 66 }, { -2, 71 }, { -2, 75 },
{ -1, 70 }, { -9, 72 }, { 14, 60 }, { 16, 37 },
{ 0, 47 }, { 18, 35 }, { 11, 37 }, { 12, 41 },
{ 10, 41 }, { 2, 48 }, { 12, 41 }, { 13, 41 },
{ 0, 59 }, { 3, 50 }, { 19, 40 }, { 3, 66 },
{ 18, 50 },
/* 338 - 398 */
{ 19, -6 }, { 18, -6 }, { 14, 0 }, { 26, -12 },
{ 31, -16 }, { 33, -25 }, { 33, -22 }, { 37, -28 },
{ 39, -30 }, { 42, -30 }, { 47, -42 }, { 45, -36 },
{ 49, -34 }, { 41, -17 }, { 32, 9 }, { 69, -71 },
{ 63, -63 }, { 66, -64 }, { 77, -74 }, { 54, -39 },
{ 52, -35 }, { 41, -10 }, { 36, 0 }, { 40, -1 },
{ 30, 14 }, { 28, 26 }, { 23, 37 }, { 12, 55 },
{ 11, 65 }, { 37, -33 }, { 39, -36 }, { 40, -37 },
{ 38, -30 }, { 46, -33 }, { 42, -30 }, { 40, -24 },
{ 49, -29 }, { 38, -12 }, { 40, -10 }, { 38, -3 },
{ 46, -5 }, { 31, 20 }, { 29, 30 }, { 25, 44 },
{ 12, 48 }, { 11, 49 }, { 26, 45 }, { 22, 22 },
{ 23, 22 }, { 27, 21 }, { 33, 20 }, { 26, 28 },
{ 30, 24 }, { 27, 34 }, { 18, 42 }, { 25, 39 },
{ 18, 50 }, { 12, 70 }, { 21, 54 }, { 14, 71 },
{ 11, 83 },
/* 399 - 435 */
{ 25, 32 }, { 21, 49 }, { 21, 54 },
{ -5, 85 }, { -6, 81 }, { -10, 77 }, { -7, 81 },
{ -17, 80 }, { -18, 73 }, { -4, 74 }, { -10, 83 },
{ -9, 71 }, { -9, 67 }, { -1, 61 }, { -8, 66 },
{ -14, 66 }, { 0, 59 }, { 2, 59 }, { 17, -10 },
{ 32, -13 }, { 42, -9 }, { 49, -5 }, { 53, 0 },
{ 64, 3 }, { 68, 10 }, { 66, 27 }, { 47, 57 },
{ -5, 71 }, { 0, 24 }, { -1, 36 }, { -2, 42 },
{ -2, 52 }, { -9, 57 }, { -6, 63 }, { -4, 65 },
{ -4, 67 }, { -7, 82 },
/* 436 - 459 */
{ -3, 81 }, { -3, 76 }, { -7, 72 }, { -6, 78 },
{ -12, 72 }, { -14, 68 }, { -3, 70 }, { -6, 76 },
{ -5, 66 }, { -5, 62 }, { 0, 57 }, { -4, 61 },
{ -9, 60 }, { 1, 54 }, { 2, 58 }, { 17, -10 },
{ 32, -13 }, { 42, -9 }, { 49, -5 }, { 53, 0 },
{ 64, 3 }, { 68, 10 }, { 66, 27 }, { 47, 57 },
},
/* i_cabac_init_idc == 2 */
{
/* 0 - 10 */
{ 20, -15 }, { 2, 54 }, { 3, 74 }, { 20, -15 },
{ 2, 54 }, { 3, 74 }, { -28, 127 }, { -23, 104 },
{ -6, 53 }, { -1, 54 }, { 7, 51 },
/* 11 - 23 */
{ 29, 16 }, { 25, 0 }, { 14, 0 }, { -10, 51 },
{ -3, 62 }, { -27, 99 }, { 26, 16 }, { -4, 85 },
{ -24, 102 }, { 5, 57 }, { 6, 57 }, { -17, 73 },
{ 14, 57 },
/* 24 - 39 */
{ 20, 40 }, { 20, 10 }, { 29, 0 }, { 54, 0 },
{ 37, 42 }, { 12, 97 }, { -32, 127 }, { -22, 117 },
{ -2, 74 }, { -4, 85 }, { -24, 102 }, { 5, 57 },
{ -6, 93 }, { -14, 88 }, { -6, 44 }, { 4, 55 },
/* 40 - 53 */
{ -11, 89 },{ -15, 103 },{ -21, 116 },{ 19, 57 },
{ 20, 58 },{ 4, 84 },{ 6, 96 },{ 1, 63 },
{ -5, 85 },{ -13, 106 },{ 5, 63 },{ 6, 75 },
{ -3, 90 },{ -1, 101 },
/* 54 - 59 */
{ 3, 55 },{ -4, 79 },{ -2, 75 },{ -12, 97 },
{ -7, 50 },{ 1, 60 },
/* 60 - 69 */
{ 0, 41 }, { 0, 63 }, { 0, 63 }, { 0, 63 },
{ -9, 83 }, { 4, 86 }, { 0, 97 }, { -7, 72 },
{ 13, 41 }, { 3, 62 },
/* 70 - 104 */
{ 7, 34 }, { -9, 88 }, { -20, 127 }, { -36, 127 },
{ -17, 91 }, { -14, 95 }, { -25, 84 }, { -25, 86 },
{ -12, 89 }, { -17, 91 }, { -31, 127 }, { -14, 76 },
{ -18, 103 }, { -13, 90 }, { -37, 127 }, { 11, 80 },
{ 5, 76 }, { 2, 84 }, { 5, 78 }, { -6, 55 },
{ 4, 61 }, { -14, 83 }, { -37, 127 }, { -5, 79 },
{ -11, 104 }, { -11, 91 }, { -30, 127 }, { 0, 65 },
{ -2, 79 }, { 0, 72 }, { -4, 92 }, { -6, 56 },
{ 3, 68 }, { -8, 71 }, { -13, 98 },
/* 105 -> 165 */
{ -4, 86 }, { -12, 88 }, { -5, 82 }, { -3, 72 },
{ -4, 67 }, { -8, 72 }, { -16, 89 }, { -9, 69 },
{ -1, 59 }, { 5, 66 }, { 4, 57 }, { -4, 71 },
{ -2, 71 }, { 2, 58 }, { -1, 74 }, { -4, 44 },
{ -1, 69 }, { 0, 62 }, { -7, 51 }, { -4, 47 },
{ -6, 42 }, { -3, 41 }, { -6, 53 }, { 8, 76 },
{ -9, 78 }, { -11, 83 }, { 9, 52 }, { 0, 67 },
{ -5, 90 }, { 1, 67 }, { -15, 72 }, { -5, 75 },
{ -8, 80 }, { -21, 83 }, { -21, 64 }, { -13, 31 },
{ -25, 64 }, { -29, 94 }, { 9, 75 }, { 17, 63 },
{ -8, 74 }, { -5, 35 }, { -2, 27 }, { 13, 91 },
{ 3, 65 }, { -7, 69 }, { 8, 77 }, { -10, 66 },
{ 3, 62 }, { -3, 68 }, { -20, 81 }, { 0, 30 },
{ 1, 7 }, { -3, 23 }, { -21, 74 }, { 16, 66 },
{ -23, 124 }, { 17, 37 }, { 44, -18 }, { 50, -34 },
{ -22, 127 },
/* 166 - 226 */
{ 4, 39 }, { 0, 42 }, { 7, 34 }, { 11, 29 },
{ 8, 31 }, { 6, 37 }, { 7, 42 }, { 3, 40 },
{ 8, 33 }, { 13, 43 }, { 13, 36 }, { 4, 47 },
{ 3, 55 }, { 2, 58 }, { 6, 60 }, { 8, 44 },
{ 11, 44 }, { 14, 42 }, { 7, 48 }, { 4, 56 },
{ 4, 52 }, { 13, 37 }, { 9, 49 }, { 19, 58 },
{ 10, 48 }, { 12, 45 }, { 0, 69 }, { 20, 33 },
{ 8, 63 }, { 35, -18 }, { 33, -25 }, { 28, -3 },
{ 24, 10 }, { 27, 0 }, { 34, -14 }, { 52, -44 },
{ 39, -24 }, { 19, 17 }, { 31, 25 }, { 36, 29 },
{ 24, 33 }, { 34, 15 }, { 30, 20 }, { 22, 73 },
{ 20, 34 }, { 19, 31 }, { 27, 44 }, { 19, 16 },
{ 15, 36 }, { 15, 36 }, { 21, 28 }, { 25, 21 },
{ 30, 20 }, { 31, 12 }, { 27, 16 }, { 24, 42 },
{ 0, 93 }, { 14, 56 }, { 15, 57 }, { 26, 38 },
{ -24, 127 },
/* 227 - 275 */
{ -24, 115 }, { -22, 82 }, { -9, 62 }, { 0, 53 },
{ 0, 59 }, { -14, 85 }, { -13, 89 }, { -13, 94 },
{ -11, 92 }, { -29, 127 }, { -21, 100 }, { -14, 57 },
{ -12, 67 }, { -11, 71 }, { -10, 77 }, { -21, 85 },
{ -16, 88 }, { -23, 104 }, { -15, 98 }, { -37, 127 },
{ -10, 82 }, { -8, 48 }, { -8, 61 }, { -8, 66 },
{ -7, 70 }, { -14, 75 }, { -10, 79 }, { -9, 83 },
{ -12, 92 }, { -18, 108 }, { -4, 79 }, { -22, 69 },
{ -16, 75 }, { -2, 58 }, { 1, 58 }, { -13, 78 },
{ -9, 83 }, { -4, 81 }, { -13, 99 }, { -13, 81 },
{ -6, 38 }, { -13, 62 }, { -6, 58 }, { -2, 59 },
{ -16, 73 }, { -10, 76 }, { -13, 86 }, { -9, 83 },
{ -10, 87 },
/* 276 a bit special (not used, bypass is used instead) */
{ 0, 0 },
/* 277 - 337 */
{ -22, 127 }, { -25, 127 }, { -25, 120 }, { -27, 127 },
{ -19, 114 }, { -23, 117 }, { -25, 118 }, { -26, 117 },
{ -24, 113 }, { -28, 118 }, { -31, 120 }, { -37, 124 },
{ -10, 94 }, { -15, 102 }, { -10, 99 }, { -13, 106 },
{ -50, 127 }, { -5, 92 }, { 17, 57 }, { -5, 86 },
{ -13, 94 }, { -12, 91 }, { -2, 77 }, { 0, 71 },
{ -1, 73 }, { 4, 64 }, { -7, 81 }, { 5, 64 },
{ 15, 57 }, { 1, 67 }, { 0, 68 }, { -10, 67 },
{ 1, 68 }, { 0, 77 }, { 2, 64 }, { 0, 68 },
{ -5, 78 }, { 7, 55 }, { 5, 59 }, { 2, 65 },
{ 14, 54 }, { 15, 44 }, { 5, 60 }, { 2, 70 },
{ -2, 76 }, { -18, 86 }, { 12, 70 }, { 5, 64 },
{ -12, 70 }, { 11, 55 }, { 5, 56 }, { 0, 69 },
{ 2, 65 }, { -6, 74 }, { 5, 54 }, { 7, 54 },
{ -6, 76 }, { -11, 82 }, { -2, 77 }, { -2, 77 },
{ 25, 42 },
/* 338 - 398 */
{ 17, -13 }, { 16, -9 }, { 17, -12 }, { 27, -21 },
{ 37, -30 }, { 41, -40 }, { 42, -41 }, { 48, -47 },
{ 39, -32 }, { 46, -40 }, { 52, -51 }, { 46, -41 },
{ 52, -39 }, { 43, -19 }, { 32, 11 }, { 61, -55 },
{ 56, -46 }, { 62, -50 }, { 81, -67 }, { 45, -20 },
{ 35, -2 }, { 28, 15 }, { 34, 1 }, { 39, 1 },
{ 30, 17 }, { 20, 38 }, { 18, 45 }, { 15, 54 },
{ 0, 79 }, { 36, -16 }, { 37, -14 }, { 37, -17 },
{ 32, 1 }, { 34, 15 }, { 29, 15 }, { 24, 25 },
{ 34, 22 }, { 31, 16 }, { 35, 18 }, { 31, 28 },
{ 33, 41 }, { 36, 28 }, { 27, 47 }, { 21, 62 },
{ 18, 31 }, { 19, 26 }, { 36, 24 }, { 24, 23 },
{ 27, 16 }, { 24, 30 }, { 31, 29 }, { 22, 41 },
{ 22, 42 }, { 16, 60 }, { 15, 52 }, { 14, 60 },
{ 3, 78 }, { -16, 123 }, { 21, 53 }, { 22, 56 },
{ 25, 61 },
/* 399 - 435 */
{ 21, 33 }, { 19, 50 }, { 17, 61 },
{ -3, 78 }, { -8, 74 }, { -9, 72 }, { -10, 72 },
{ -18, 75 }, { -12, 71 }, { -11, 63 }, { -5, 70 },
{ -17, 75 }, { -14, 72 }, { -16, 67 }, { -8, 53 },
{ -14, 59 }, { -9, 52 }, { -11, 68 }, { 9, -2 },
{ 30, -10 }, { 31, -4 }, { 33, -1 }, { 33, 7 },
{ 31, 12 }, { 37, 23 }, { 31, 38 }, { 20, 64 },
{ -9, 71 }, { -7, 37 }, { -8, 44 }, { -11, 49 },
{ -10, 56 }, { -12, 59 }, { -8, 63 }, { -9, 67 },
{ -6, 68 }, { -10, 79 },
/* 436 - 459 */
{ -3, 78 }, { -8, 74 }, { -9, 72 }, { -10, 72 },
{ -18, 75 }, { -12, 71 }, { -11, 63 }, { -5, 70 },
{ -17, 75 }, { -14, 72 }, { -16, 67 }, { -8, 53 },
{ -14, 59 }, { -9, 52 }, { -11, 68 }, { 9, -2 },
{ 30, -10 }, { 31, -4 }, { 33, -1 }, { 33, 7 },
{ 31, 12 }, { 37, 23 }, { 31, 38 }, { 20, 64 },
}
};
void ff_h264_init_cabac_states(H264Context *h) {
MpegEncContext * const s = &h->s;
int i;
const int8_t (*tab)[2];
const int slice_qp = av_clip(s->qscale - 6*(h->sps.bit_depth_luma-8), 0, 51);
if( h->slice_type_nos == AV_PICTURE_TYPE_I ) tab = cabac_context_init_I;
else tab = cabac_context_init_PB[h->cabac_init_idc];
/* calculate pre-state */
for( i= 0; i < 460; i++ ) {
int pre = 2*(((tab[i][0] * slice_qp) >>4 ) + tab[i][1]) - 127;
pre^= pre>>31;
if(pre > 124)
pre= 124 + (pre&1);
h->cabac_state[i] = pre;
}
}
static int decode_cabac_field_decoding_flag(H264Context *h) {
MpegEncContext * const s = &h->s;
const long mbb_xy = h->mb_xy - 2L*s->mb_stride;
unsigned long ctx = 0;
ctx += h->mb_field_decoding_flag & !!s->mb_x; //for FMO:(s->current_picture.mb_type[mba_xy]>>7)&(h->slice_table[mba_xy] == h->slice_num);
ctx += (s->current_picture.mb_type[mbb_xy]>>7)&(h->slice_table[mbb_xy] == h->slice_num);
return get_cabac_noinline( &h->cabac, &(h->cabac_state+70)[ctx] );
}
static int decode_cabac_intra_mb_type(H264Context *h, int ctx_base, int intra_slice) {
uint8_t *state= &h->cabac_state[ctx_base];
int mb_type;
if(intra_slice){
int ctx=0;
if( h->left_type[0] & (MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM))
ctx++;
if( h->top_type & (MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM))
ctx++;
if( get_cabac_noinline( &h->cabac, &state[ctx] ) == 0 )
return 0; /* I4x4 */
state += 2;
}else{
if( get_cabac_noinline( &h->cabac, state ) == 0 )
return 0; /* I4x4 */
}
if( get_cabac_terminate( &h->cabac ) )
return 25; /* PCM */
mb_type = 1; /* I16x16 */
mb_type += 12 * get_cabac_noinline( &h->cabac, &state[1] ); /* cbp_luma != 0 */
if( get_cabac_noinline( &h->cabac, &state[2] ) ) /* cbp_chroma */
mb_type += 4 + 4 * get_cabac_noinline( &h->cabac, &state[2+intra_slice] );
mb_type += 2 * get_cabac_noinline( &h->cabac, &state[3+intra_slice] );
mb_type += 1 * get_cabac_noinline( &h->cabac, &state[3+2*intra_slice] );
return mb_type;
}
static int decode_cabac_mb_skip( H264Context *h, int mb_x, int mb_y ) {
MpegEncContext * const s = &h->s;
int mba_xy, mbb_xy;
int ctx = 0;
if(FRAME_MBAFF){ //FIXME merge with the stuff in fill_caches?
int mb_xy = mb_x + (mb_y&~1)*s->mb_stride;
mba_xy = mb_xy - 1;
if( (mb_y&1)
&& h->slice_table[mba_xy] == h->slice_num
&& MB_FIELD == !!IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) )
mba_xy += s->mb_stride;
if( MB_FIELD ){
mbb_xy = mb_xy - s->mb_stride;
if( !(mb_y&1)
&& h->slice_table[mbb_xy] == h->slice_num
&& IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) )
mbb_xy -= s->mb_stride;
}else
mbb_xy = mb_x + (mb_y-1)*s->mb_stride;
}else{
int mb_xy = h->mb_xy;
mba_xy = mb_xy - 1;
mbb_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
}
if( h->slice_table[mba_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mba_xy] ))
ctx++;
if( h->slice_table[mbb_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mbb_xy] ))
ctx++;
if( h->slice_type_nos == AV_PICTURE_TYPE_B )
ctx += 13;
return get_cabac_noinline( &h->cabac, &h->cabac_state[11+ctx] );
}
static int decode_cabac_mb_intra4x4_pred_mode( H264Context *h, int pred_mode ) {
int mode = 0;
if( get_cabac( &h->cabac, &h->cabac_state[68] ) )
return pred_mode;
mode += 1 * get_cabac( &h->cabac, &h->cabac_state[69] );
mode += 2 * get_cabac( &h->cabac, &h->cabac_state[69] );
mode += 4 * get_cabac( &h->cabac, &h->cabac_state[69] );
return mode + ( mode >= pred_mode );
}
static int decode_cabac_mb_chroma_pre_mode( H264Context *h) {
const int mba_xy = h->left_mb_xy[0];
const int mbb_xy = h->top_mb_xy;
int ctx = 0;
/* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */
if( h->left_type[0] && h->chroma_pred_mode_table[mba_xy] != 0 )
ctx++;
if( h->top_type && h->chroma_pred_mode_table[mbb_xy] != 0 )
ctx++;
if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+ctx] ) == 0 )
return 0;
if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
return 1;
if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
return 2;
else
return 3;
}
static int decode_cabac_mb_cbp_luma( H264Context *h) {
int cbp_b, cbp_a, ctx, cbp = 0;
cbp_a = h->left_cbp;
cbp_b = h->top_cbp;
ctx = !(cbp_a & 0x02) + 2 * !(cbp_b & 0x04);
cbp += get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]);
ctx = !(cbp & 0x01) + 2 * !(cbp_b & 0x08);
cbp += get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 1;
ctx = !(cbp_a & 0x08) + 2 * !(cbp & 0x01);
cbp += get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 2;
ctx = !(cbp & 0x04) + 2 * !(cbp & 0x02);
cbp += get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 3;
return cbp;
}
static int decode_cabac_mb_cbp_chroma( H264Context *h) {
int ctx;
int cbp_a, cbp_b;
cbp_a = (h->left_cbp>>4)&0x03;
cbp_b = (h-> top_cbp>>4)&0x03;
ctx = 0;
if( cbp_a > 0 ) ctx++;
if( cbp_b > 0 ) ctx += 2;
if( get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] ) == 0 )
return 0;
ctx = 4;
if( cbp_a == 2 ) ctx++;
if( cbp_b == 2 ) ctx += 2;
return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] );
}
static int decode_cabac_p_mb_sub_type( H264Context *h ) {
if( get_cabac( &h->cabac, &h->cabac_state[21] ) )
return 0; /* 8x8 */
if( !get_cabac( &h->cabac, &h->cabac_state[22] ) )
return 1; /* 8x4 */
if( get_cabac( &h->cabac, &h->cabac_state[23] ) )
return 2; /* 4x8 */
return 3; /* 4x4 */
}
static int decode_cabac_b_mb_sub_type( H264Context *h ) {
int type;
if( !get_cabac( &h->cabac, &h->cabac_state[36] ) )
return 0; /* B_Direct_8x8 */
if( !get_cabac( &h->cabac, &h->cabac_state[37] ) )
return 1 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L0_8x8, B_L1_8x8 */
type = 3;
if( get_cabac( &h->cabac, &h->cabac_state[38] ) ) {
if( get_cabac( &h->cabac, &h->cabac_state[39] ) )
return 11 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L1_4x4, B_Bi_4x4 */
type += 4;
}
type += 2*get_cabac( &h->cabac, &h->cabac_state[39] );
type += get_cabac( &h->cabac, &h->cabac_state[39] );
return type;
}
static int decode_cabac_mb_ref( H264Context *h, int list, int n ) {
int refa = h->ref_cache[list][scan8[n] - 1];
int refb = h->ref_cache[list][scan8[n] - 8];
int ref = 0;
int ctx = 0;
if( h->slice_type_nos == AV_PICTURE_TYPE_B) {
if( refa > 0 && !(h->direct_cache[scan8[n] - 1]&(MB_TYPE_DIRECT2>>1)) )
ctx++;
if( refb > 0 && !(h->direct_cache[scan8[n] - 8]&(MB_TYPE_DIRECT2>>1)) )
ctx += 2;
} else {
if( refa > 0 )
ctx++;
if( refb > 0 )
ctx += 2;
}
while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) {
ref++;
ctx = (ctx>>2)+4;
if(ref >= 32 /*h->ref_list[list]*/){
return -1;
}
}
return ref;
}
static int decode_cabac_mb_mvd( H264Context *h, int ctxbase, int amvd, int *mvda) {
int mvd;
if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+((amvd-3)>>(INT_BIT-1))+((amvd-33)>>(INT_BIT-1))+2])){
// if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+(amvd>2)+(amvd>32)])){
*mvda= 0;
return 0;
}
mvd= 1;
ctxbase+= 3;
while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase] ) ) {
if( mvd < 4 )
ctxbase++;
mvd++;
}
if( mvd >= 9 ) {
int k = 3;
while( get_cabac_bypass( &h->cabac ) ) {
mvd += 1 << k;
k++;
if(k>24){
av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n");
return INT_MIN;
}
}
while( k-- ) {
mvd += get_cabac_bypass( &h->cabac )<<k;
}
*mvda=mvd < 70 ? mvd : 70;
}else
*mvda=mvd;
return get_cabac_bypass_sign( &h->cabac, -mvd );
}
#define DECODE_CABAC_MB_MVD( h, list, n )\
{\
int amvd0 = h->mvd_cache[list][scan8[n] - 1][0] +\
h->mvd_cache[list][scan8[n] - 8][0];\
int amvd1 = h->mvd_cache[list][scan8[n] - 1][1] +\
h->mvd_cache[list][scan8[n] - 8][1];\
\
mx += decode_cabac_mb_mvd( h, 40, amvd0, &mpx );\
my += decode_cabac_mb_mvd( h, 47, amvd1, &mpy );\
}
static av_always_inline int get_cabac_cbf_ctx( H264Context *h, int cat, int idx, int is_dc ) {
int nza, nzb;
int ctx = 0;
if( is_dc ) {
if( cat == 0 ) {
nza = h->left_cbp&0x100;
nzb = h-> top_cbp&0x100;
} else {
idx -= CHROMA_DC_BLOCK_INDEX;
nza = (h->left_cbp>>(6+idx))&0x01;
nzb = (h-> top_cbp>>(6+idx))&0x01;
}
} else {
assert(cat == 1 || cat == 2 || cat == 4);
nza = h->non_zero_count_cache[scan8[idx] - 1];
nzb = h->non_zero_count_cache[scan8[idx] - 8];
}
if( nza > 0 )
ctx++;
if( nzb > 0 )
ctx += 2;
return ctx + 4 * cat;
}
DECLARE_ASM_CONST(1, uint8_t, last_coeff_flag_offset_8x8)[63] = {
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8
};
static av_always_inline void decode_cabac_residual_internal( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff, int is_dc ) {
static const int significant_coeff_flag_offset[2][6] = {
{ 105+0, 105+15, 105+29, 105+44, 105+47, 402 },
{ 277+0, 277+15, 277+29, 277+44, 277+47, 436 }
};
static const int last_coeff_flag_offset[2][6] = {
{ 166+0, 166+15, 166+29, 166+44, 166+47, 417 },
{ 338+0, 338+15, 338+29, 338+44, 338+47, 451 }
};
static const int coeff_abs_level_m1_offset[6] = {
227+0, 227+10, 227+20, 227+30, 227+39, 426
};
static const uint8_t significant_coeff_flag_offset_8x8[2][63] = {
{ 0, 1, 2, 3, 4, 5, 5, 4, 4, 3, 3, 4, 4, 4, 5, 5,
4, 4, 4, 4, 3, 3, 6, 7, 7, 7, 8, 9,10, 9, 8, 7,
7, 6,11,12,13,11, 6, 7, 8, 9,14,10, 9, 8, 6,11,
12,13,11, 6, 9,14,10, 9,11,12,13,11,14,10,12 },
{ 0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 7, 7, 8, 4, 5,
6, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,11,12,11,
9, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,13,13, 9,
9,10,10, 8,13,13, 9, 9,10,10,14,14,14,14,14 }
};
/* node ctx: 0..3: abslevel1 (with abslevelgt1 == 0).
* 4..7: abslevelgt1 + 3 (and abslevel1 doesn't matter).
* map node ctx => cabac ctx for level=1 */
static const uint8_t coeff_abs_level1_ctx[8] = { 1, 2, 3, 4, 0, 0, 0, 0 };
/* map node ctx => cabac ctx for level>1 */
static const uint8_t coeff_abs_levelgt1_ctx[8] = { 5, 5, 5, 5, 6, 7, 8, 9 };
static const uint8_t coeff_abs_level_transition[2][8] = {
/* update node ctx after decoding a level=1 */
{ 1, 2, 3, 3, 4, 5, 6, 7 },
/* update node ctx after decoding a level>1 */
{ 4, 4, 4, 4, 5, 6, 7, 7 }
};
int index[64];
int av_unused last;
int coeff_count = 0;
int node_ctx = 0;
uint8_t *significant_coeff_ctx_base;
uint8_t *last_coeff_ctx_base;
uint8_t *abs_level_m1_ctx_base;
#if !ARCH_X86
#define CABAC_ON_STACK
#endif
#ifdef CABAC_ON_STACK
#define CC &cc
CABACContext cc;
cc.range = h->cabac.range;
cc.low = h->cabac.low;
cc.bytestream= h->cabac.bytestream;
#else
#define CC &h->cabac
#endif
significant_coeff_ctx_base = h->cabac_state
+ significant_coeff_flag_offset[MB_FIELD][cat];
last_coeff_ctx_base = h->cabac_state
+ last_coeff_flag_offset[MB_FIELD][cat];
abs_level_m1_ctx_base = h->cabac_state
+ coeff_abs_level_m1_offset[cat];
if( !is_dc && cat == 5 ) {
#define DECODE_SIGNIFICANCE( coefs, sig_off, last_off ) \
for(last= 0; last < coefs; last++) { \
uint8_t *sig_ctx = significant_coeff_ctx_base + sig_off; \
if( get_cabac( CC, sig_ctx )) { \
uint8_t *last_ctx = last_coeff_ctx_base + last_off; \
index[coeff_count++] = last; \
if( get_cabac( CC, last_ctx ) ) { \
last= max_coeff; \
break; \
} \
} \
}\
if( last == max_coeff -1 ) {\
index[coeff_count++] = last;\
}
const uint8_t *sig_off = significant_coeff_flag_offset_8x8[MB_FIELD];
#if ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE && !defined(BROKEN_RELOCATIONS)
coeff_count= decode_significance_8x8_x86(CC, significant_coeff_ctx_base, index, sig_off);
} else {
coeff_count= decode_significance_x86(CC, max_coeff, significant_coeff_ctx_base, index);
#else
DECODE_SIGNIFICANCE( 63, sig_off[last], last_coeff_flag_offset_8x8[last] );
} else {
DECODE_SIGNIFICANCE( max_coeff - 1, last, last );
#endif
}
assert(coeff_count > 0);
if( is_dc ) {
if( cat == 0 )
h->cbp_table[h->mb_xy] |= 0x100;
else
h->cbp_table[h->mb_xy] |= 0x40 << (n - CHROMA_DC_BLOCK_INDEX);
h->non_zero_count_cache[scan8[n]] = coeff_count;
} else {
if( cat == 5 )
fill_rectangle(&h->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1);
else {
assert( cat == 1 || cat == 2 || cat == 4 );
h->non_zero_count_cache[scan8[n]] = coeff_count;
}
}
#define STORE_BLOCK(type) \
do { \
uint8_t *ctx = coeff_abs_level1_ctx[node_ctx] + abs_level_m1_ctx_base; \
\
int j= scantable[index[--coeff_count]]; \
\
if( get_cabac( CC, ctx ) == 0 ) { \
node_ctx = coeff_abs_level_transition[0][node_ctx]; \
if( is_dc ) { \
((type*)block)[j] = get_cabac_bypass_sign( CC, -1); \
}else{ \
((type*)block)[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6; \
} \
} else { \
int coeff_abs = 2; \
ctx = coeff_abs_levelgt1_ctx[node_ctx] + abs_level_m1_ctx_base; \
node_ctx = coeff_abs_level_transition[1][node_ctx]; \
\
while( coeff_abs < 15 && get_cabac( CC, ctx ) ) { \
coeff_abs++; \
} \
\
if( coeff_abs >= 15 ) { \
int j = 0; \
while( get_cabac_bypass( CC ) ) { \
j++; \
} \
\
coeff_abs=1; \
while( j-- ) { \
coeff_abs += coeff_abs + get_cabac_bypass( CC ); \
} \
coeff_abs+= 14; \
} \
\
if( is_dc ) { \
((type*)block)[j] = get_cabac_bypass_sign( CC, -coeff_abs ); \
}else{ \
((type*)block)[j] = ((int)(get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32)) >> 6; \
} \
} \
} while ( coeff_count );
if (h->pixel_shift) {
STORE_BLOCK(int32_t)
} else {
STORE_BLOCK(int16_t)
}
#ifdef CABAC_ON_STACK
h->cabac.range = cc.range ;
h->cabac.low = cc.low ;
h->cabac.bytestream= cc.bytestream;
#endif
}
static void decode_cabac_residual_dc_internal( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, int max_coeff ) {
decode_cabac_residual_internal(h, block, cat, n, scantable, NULL, max_coeff, 1);
}
static void decode_cabac_residual_nondc_internal( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, 0);
}
/* cat: 0-> DC 16x16 n = 0
* 1-> AC 16x16 n = luma4x4idx
* 2-> Luma4x4 n = luma4x4idx
* 3-> DC Chroma n = iCbCr
* 4-> AC Chroma n = 16 + 4 * iCbCr + chroma4x4idx
* 5-> Luma8x8 n = 4 * luma8x8idx */
/* Partially inline the CABAC residual decode: inline the coded block flag.
* This has very little impact on binary size and improves performance
* because it allows improved constant propagation into get_cabac_cbf_ctx,
* as well as because most blocks have zero CBFs. */
static av_always_inline void decode_cabac_residual_dc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, int max_coeff ) {
/* read coded block flag */
if( get_cabac( &h->cabac, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n, 1 ) ] ) == 0 ) {
h->non_zero_count_cache[scan8[n]] = 0;
return;
}
decode_cabac_residual_dc_internal( h, block, cat, n, scantable, max_coeff );
}
static av_always_inline void decode_cabac_residual_nondc( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
/* read coded block flag */
if( cat != 5 && get_cabac( &h->cabac, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n, 0 ) ] ) == 0 ) {
h->non_zero_count_cache[scan8[n]] = 0;
return;
}
decode_cabac_residual_nondc_internal( h, block, cat, n, scantable, qmul, max_coeff );
}
/**
* decodes a macroblock
* @return 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
*/
int ff_h264_decode_mb_cabac(H264Context *h) {
MpegEncContext * const s = &h->s;
int mb_xy;
int mb_type, partition_count, cbp = 0;
int dct8x8_allowed= h->pps.transform_8x8_mode;
const int pixel_shift = h->pixel_shift;
mb_xy = h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
if( h->slice_type_nos != AV_PICTURE_TYPE_I ) {
int skip;
/* a skipped mb needs the aff flag from the following mb */
if( FRAME_MBAFF && (s->mb_y&1)==1 && h->prev_mb_skipped )
skip = h->next_mb_skipped;
else
skip = decode_cabac_mb_skip( h, s->mb_x, s->mb_y );
/* read skip flags */
if( skip ) {
if( FRAME_MBAFF && (s->mb_y&1)==0 ){
s->current_picture.mb_type[mb_xy] = MB_TYPE_SKIP;
h->next_mb_skipped = decode_cabac_mb_skip( h, s->mb_x, s->mb_y+1 );
if(!h->next_mb_skipped)
h->mb_mbaff = h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
}
decode_mb_skip(h);
h->cbp_table[mb_xy] = 0;
h->chroma_pred_mode_table[mb_xy] = 0;
h->last_qscale_diff = 0;
return 0;
}
}
if(FRAME_MBAFF){
if( (s->mb_y&1) == 0 )
h->mb_mbaff =
h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
}
h->prev_mb_skipped = 0;
fill_decode_neighbors(h, -(MB_FIELD));
if( h->slice_type_nos == AV_PICTURE_TYPE_B ) {
int ctx = 0;
assert(h->slice_type_nos == AV_PICTURE_TYPE_B);
if( !IS_DIRECT( h->left_type[0]-1 ) )
ctx++;
if( !IS_DIRECT( h->top_type-1 ) )
ctx++;
if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+ctx] ) ){
mb_type= 0; /* B_Direct_16x16 */
}else if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+3] ) ) {
mb_type= 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); /* B_L[01]_16x16 */
}else{
int bits;
bits = get_cabac_noinline( &h->cabac, &h->cabac_state[27+4] ) << 3;
bits+= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 2;
bits+= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 1;
bits+= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
if( bits < 8 ){
mb_type= bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */
}else if( bits == 13 ){
mb_type= decode_cabac_intra_mb_type(h, 32, 0);
goto decode_intra_mb;
}else if( bits == 14 ){
mb_type= 11; /* B_L1_L0_8x16 */
}else if( bits == 15 ){
mb_type= 22; /* B_8x8 */
}else{
bits= ( bits<<1 ) + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
mb_type= bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */
}
}
partition_count= b_mb_type_info[mb_type].partition_count;
mb_type= b_mb_type_info[mb_type].type;
} else if( h->slice_type_nos == AV_PICTURE_TYPE_P ) {
if( get_cabac_noinline( &h->cabac, &h->cabac_state[14] ) == 0 ) {
/* P-type */
if( get_cabac_noinline( &h->cabac, &h->cabac_state[15] ) == 0 ) {
/* P_L0_D16x16, P_8x8 */
mb_type= 3 * get_cabac_noinline( &h->cabac, &h->cabac_state[16] );
} else {
/* P_L0_D8x16, P_L0_D16x8 */
mb_type= 2 - get_cabac_noinline( &h->cabac, &h->cabac_state[17] );
}
partition_count= p_mb_type_info[mb_type].partition_count;
mb_type= p_mb_type_info[mb_type].type;
} else {
mb_type= decode_cabac_intra_mb_type(h, 17, 0);
goto decode_intra_mb;
}
} else {
mb_type= decode_cabac_intra_mb_type(h, 3, 1);
if(h->slice_type == AV_PICTURE_TYPE_SI && mb_type)
mb_type--;
assert(h->slice_type_nos == AV_PICTURE_TYPE_I);
decode_intra_mb:
partition_count = 0;
cbp= i_mb_type_info[mb_type].cbp;
h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
mb_type= i_mb_type_info[mb_type].type;
}
if(MB_FIELD)
mb_type |= MB_TYPE_INTERLACED;
h->slice_table[ mb_xy ]= h->slice_num;
if(IS_INTRA_PCM(mb_type)) {
const int mb_size = (384*h->sps.bit_depth_luma) >> 3;
const uint8_t *ptr;
// We assume these blocks are very rare so we do not optimize it.
// FIXME The two following lines get the bitstream position in the cabac
// decode, I think it should be done by a function in cabac.h (or cabac.c).
ptr= h->cabac.bytestream;
if(h->cabac.low&0x1) ptr--;
if(CABAC_BITS==16){
if(h->cabac.low&0x1FF) ptr--;
}
// The pixels are stored in the same order as levels in h->mb array.
memcpy(h->mb, ptr, 2*mb_size/3); ptr+=2*mb_size/3;
if(CHROMA){
memcpy(h->mb+mb_size/3, ptr, mb_size/3); ptr+=mb_size/3;
}
ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr);
// All blocks are present
h->cbp_table[mb_xy] = 0x1ef;
h->chroma_pred_mode_table[mb_xy] = 0;
// In deblocking, the quantizer is 0
s->current_picture.qscale_table[mb_xy]= 0;
// All coeffs are present
memset(h->non_zero_count[mb_xy], 16, 32);
s->current_picture.mb_type[mb_xy]= mb_type;
h->last_qscale_diff = 0;
return 0;
}
if(MB_MBAFF){
h->ref_count[0] <<= 1;
h->ref_count[1] <<= 1;
}
fill_decode_caches(h, mb_type);
if( IS_INTRA( mb_type ) ) {
int i, pred_mode;
if( IS_INTRA4x4( mb_type ) ) {
if( dct8x8_allowed && get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] ) ) {
mb_type |= MB_TYPE_8x8DCT;
for( i = 0; i < 16; i+=4 ) {
int pred = pred_intra_mode( h, i );
int mode = decode_cabac_mb_intra4x4_pred_mode( h, pred );
fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
}
} else {
for( i = 0; i < 16; i++ ) {
int pred = pred_intra_mode( h, i );
h->intra4x4_pred_mode_cache[ scan8[i] ] = decode_cabac_mb_intra4x4_pred_mode( h, pred );
//av_log( s->avctx, AV_LOG_ERROR, "i4x4 pred=%d mode=%d\n", pred, h->intra4x4_pred_mode_cache[ scan8[i] ] );
}
}
ff_h264_write_back_intra_pred_mode(h);
if( ff_h264_check_intra4x4_pred_mode(h) < 0 ) return -1;
} else {
h->intra16x16_pred_mode= ff_h264_check_intra_pred_mode( h, h->intra16x16_pred_mode );
if( h->intra16x16_pred_mode < 0 ) return -1;
}
if(CHROMA){
h->chroma_pred_mode_table[mb_xy] =
pred_mode = decode_cabac_mb_chroma_pre_mode( h );
pred_mode= ff_h264_check_intra_pred_mode( h, pred_mode );
if( pred_mode < 0 ) return -1;
h->chroma_pred_mode= pred_mode;
} else {
h->chroma_pred_mode= DC_128_PRED8x8;
}
} else if( partition_count == 4 ) {
int i, j, sub_partition_count[4], list, ref[2][4];
if( h->slice_type_nos == AV_PICTURE_TYPE_B ) {
for( i = 0; i < 4; i++ ) {
h->sub_mb_type[i] = decode_cabac_b_mb_sub_type( h );
sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
}
if( IS_DIRECT(h->sub_mb_type[0] | h->sub_mb_type[1] |
h->sub_mb_type[2] | h->sub_mb_type[3]) ) {
ff_h264_pred_direct_motion(h, &mb_type);
h->ref_cache[0][scan8[4]] =
h->ref_cache[1][scan8[4]] =
h->ref_cache[0][scan8[12]] =
h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
for( i = 0; i < 4; i++ )
fill_rectangle( &h->direct_cache[scan8[4*i]], 2, 2, 8, (h->sub_mb_type[i]>>1)&0xFF, 1 );
}
} else {
for( i = 0; i < 4; i++ ) {
h->sub_mb_type[i] = decode_cabac_p_mb_sub_type( h );
sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
}
}
for( list = 0; list < h->list_count; list++ ) {
for( i = 0; i < 4; i++ ) {
if(IS_DIRECT(h->sub_mb_type[i])) continue;
if(IS_DIR(h->sub_mb_type[i], 0, list)){
if( h->ref_count[list] > 1 ){
ref[list][i] = decode_cabac_mb_ref( h, list, 4*i );
if(ref[list][i] >= (unsigned)h->ref_count[list]){
av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref[list][i], h->ref_count[list]);
return -1;
}
}else
ref[list][i] = 0;
} else {
ref[list][i] = -1;
}
h->ref_cache[list][ scan8[4*i]+1 ]=
h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
}
}
if(dct8x8_allowed)
dct8x8_allowed = get_dct8x8_allowed(h);
for(list=0; list<h->list_count; list++){
for(i=0; i<4; i++){
h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ];
if(IS_DIRECT(h->sub_mb_type[i])){
fill_rectangle(h->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 2);
continue;
}
if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
const int sub_mb_type= h->sub_mb_type[i];
const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
for(j=0; j<sub_partition_count[i]; j++){
int mpx, mpy;
int mx, my;
const int index= 4*i + block_width*j;
int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
uint8_t (* mvd_cache)[2]= &h->mvd_cache[list][ scan8[index] ];
pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my);
DECODE_CABAC_MB_MVD( h, list, index)
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
if(IS_SUB_8X8(sub_mb_type)){
mv_cache[ 1 ][0]=
mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
mv_cache[ 1 ][1]=
mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
mvd_cache[ 1 ][0]=
mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mpx;
mvd_cache[ 1 ][1]=
mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= mpy;
}else if(IS_SUB_8X4(sub_mb_type)){
mv_cache[ 1 ][0]= mx;
mv_cache[ 1 ][1]= my;
mvd_cache[ 1 ][0]= mpx;
mvd_cache[ 1 ][1]= mpy;
}else if(IS_SUB_4X8(sub_mb_type)){
mv_cache[ 8 ][0]= mx;
mv_cache[ 8 ][1]= my;
mvd_cache[ 8 ][0]= mpx;
mvd_cache[ 8 ][1]= mpy;
}
mv_cache[ 0 ][0]= mx;
mv_cache[ 0 ][1]= my;
mvd_cache[ 0 ][0]= mpx;
mvd_cache[ 0 ][1]= mpy;
}
}else{
fill_rectangle(h->mv_cache [list][ scan8[4*i] ], 2, 2, 8, 0, 4);
fill_rectangle(h->mvd_cache[list][ scan8[4*i] ], 2, 2, 8, 0, 2);
}
}
}
} else if( IS_DIRECT(mb_type) ) {
ff_h264_pred_direct_motion(h, &mb_type);
fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 2);
fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 2);
dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
} else {
int list, i;
if(IS_16X16(mb_type)){
for(list=0; list<h->list_count; list++){
if(IS_DIR(mb_type, 0, list)){
int ref;
if(h->ref_count[list] > 1){
ref= decode_cabac_mb_ref(h, list, 0);
if(ref >= (unsigned)h->ref_count[list]){
av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
return -1;
}
}else
ref=0;
fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);
}
}
for(list=0; list<h->list_count; list++){
if(IS_DIR(mb_type, 0, list)){
int mx,my,mpx,mpy;
pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my);
DECODE_CABAC_MB_MVD( h, list, 0)
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack8to16(mpx,mpy), 2);
fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
}
}
}
else if(IS_16X8(mb_type)){
for(list=0; list<h->list_count; list++){
for(i=0; i<2; i++){
if(IS_DIR(mb_type, i, list)){
int ref;
if(h->ref_count[list] > 1){
ref= decode_cabac_mb_ref( h, list, 8*i );
if(ref >= (unsigned)h->ref_count[list]){
av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
return -1;
}
}else
ref=0;
fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);
}else
fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);
}
}
for(list=0; list<h->list_count; list++){
for(i=0; i<2; i++){
if(IS_DIR(mb_type, i, list)){
int mx,my,mpx,mpy;
pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my);
DECODE_CABAC_MB_MVD( h, list, 8*i)
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack8to16(mpx,mpy), 2);
fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4);
}else{
fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 2);
fill_rectangle(h-> mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);
}
}
}
}else{
assert(IS_8X16(mb_type));
for(list=0; list<h->list_count; list++){
for(i=0; i<2; i++){
if(IS_DIR(mb_type, i, list)){ //FIXME optimize
int ref;
if(h->ref_count[list] > 1){
ref= decode_cabac_mb_ref( h, list, 4*i );
if(ref >= (unsigned)h->ref_count[list]){
av_log(s->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, h->ref_count[list]);
return -1;
}
}else
ref=0;
fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);
}else
fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);
}
}
for(list=0; list<h->list_count; list++){
for(i=0; i<2; i++){
if(IS_DIR(mb_type, i, list)){
int mx,my,mpx,mpy;
pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
DECODE_CABAC_MB_MVD( h, list, 4*i)
tprintf(s->avctx, "final mv:%d %d\n", mx, my);
fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack8to16(mpx,mpy), 2);
fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4);
}else{
fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 2);
fill_rectangle(h-> mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);
}
}
}
}
}
if( IS_INTER( mb_type ) ) {
h->chroma_pred_mode_table[mb_xy] = 0;
write_back_motion( h, mb_type );
}
if( !IS_INTRA16x16( mb_type ) ) {
cbp = decode_cabac_mb_cbp_luma( h );
if(CHROMA)
cbp |= decode_cabac_mb_cbp_chroma( h ) << 4;
}
h->cbp_table[mb_xy] = h->cbp = cbp;
if( dct8x8_allowed && (cbp&15) && !IS_INTRA( mb_type ) ) {
mb_type |= MB_TYPE_8x8DCT * get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] );
}
s->current_picture.mb_type[mb_xy]= mb_type;
if( cbp || IS_INTRA16x16( mb_type ) ) {
const uint8_t *scan, *scan8x8;
const uint32_t *qmul;
if(IS_INTERLACED(mb_type)){
scan8x8= s->qscale ? h->field_scan8x8 : h->field_scan8x8_q0;
scan= s->qscale ? h->field_scan : h->field_scan_q0;
}else{
scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;
scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
}
// decode_cabac_mb_dqp
if(get_cabac_noinline( &h->cabac, &h->cabac_state[60 + (h->last_qscale_diff != 0)])){
int val = 1;
int ctx= 2;
const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8);
while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
ctx= 3;
val++;
if(val > 2*max_qp){ //prevent infinite loop
av_log(h->s.avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\n", s->mb_x, s->mb_y);
return -1;
}
}
if( val&0x01 )
val= (val + 1)>>1 ;
else
val= -((val + 1)>>1);
h->last_qscale_diff = val;
s->qscale += val;
if(((unsigned)s->qscale) > max_qp){
if(s->qscale<0) s->qscale+= max_qp+1;
else s->qscale-= max_qp+1;
}
h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
}else
h->last_qscale_diff=0;
if( IS_INTRA16x16( mb_type ) ) {
int i;
//av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" );
AV_ZERO128(h->mb_luma_dc+0);
AV_ZERO128(h->mb_luma_dc+8);
AV_ZERO128(h->mb_luma_dc+16);
AV_ZERO128(h->mb_luma_dc+24);
decode_cabac_residual_dc( h, h->mb_luma_dc, 0, LUMA_DC_BLOCK_INDEX, scan, 16);
if( cbp&15 ) {
qmul = h->dequant4_coeff[0][s->qscale];
for( i = 0; i < 16; i++ ) {
//av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i );
decode_cabac_residual_nondc(h, h->mb + (16*i << pixel_shift), 1, i, scan + 1, qmul, 15);
}
} else {
fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
}
} else {
int i8x8, i4x4;
for( i8x8 = 0; i8x8 < 4; i8x8++ ) {
if( cbp & (1<<i8x8) ) {
if( IS_8x8DCT(mb_type) ) {
decode_cabac_residual_nondc(h, h->mb + (64*i8x8 << pixel_shift), 5, 4*i8x8,
scan8x8, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 64);
} else {
qmul = h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale];
for( i4x4 = 0; i4x4 < 4; i4x4++ ) {
const int index = 4*i8x8 + i4x4;
//av_log( s->avctx, AV_LOG_ERROR, "Luma4x4: %d\n", index );
//START_TIMER
decode_cabac_residual_nondc(h, h->mb + (16*index << pixel_shift), 2, index, scan, qmul, 16);
//STOP_TIMER("decode_residual")
}
}
} else {
uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
}
}
}
if( cbp&0x30 ){
int c;
for( c = 0; c < 2; c++ ) {
//av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-DC\n",c );
decode_cabac_residual_dc(h, h->mb + ((256 + 16*4*c) << pixel_shift), 3, CHROMA_DC_BLOCK_INDEX+c, chroma_dc_scan, 4);
}
}
if( cbp&0x20 ) {
int c, i;
for( c = 0; c < 2; c++ ) {
qmul = h->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[c]];
for( i = 0; i < 4; i++ ) {
const int index = 16 + 4 * c + i;
//av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-AC %d\n",c, index - 16 );
decode_cabac_residual_nondc(h, h->mb + (16*index << pixel_shift), 4, index, scan + 1, qmul, 15);
}
}
} else {
uint8_t * const nnz= &h->non_zero_count_cache[0];
nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
}
} else {
uint8_t * const nnz= &h->non_zero_count_cache[0];
fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
h->last_qscale_diff = 0;
}
s->current_picture.qscale_table[mb_xy]= s->qscale;
write_back_non_zero_count(h);
if(MB_MBAFF){
h->ref_count[0] >>= 1;
h->ref_count[1] >>= 1;
}
return 0;
}
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