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authorMichael Niedermayer <michaelni@gmx.at>2010-01-13 02:35:36 +0000
committerMichael Niedermayer <michaelni@gmx.at>2010-01-13 02:35:36 +0000
commitcc51b28299a0e2e4c79d1c169c3edd0b80282bd8 (patch)
tree613bed2bd5cda4e0fa5a1f0e2f9912a5964893bf /libavcodec/h264_cabac.c
parent8e71d89a7bec63f26db95aabbe9ca5f8974e2ff1 (diff)
downloadffmpeg-cc51b28299a0e2e4c79d1c169c3edd0b80282bd8.tar.gz
Split cabac decoding code out of h264.c.
not slower according to benchmarks. Originally committed as revision 21181 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/h264_cabac.c')
-rw-r--r--libavcodec/h264_cabac.c1785
1 files changed, 1785 insertions, 0 deletions
diff --git a/libavcodec/h264_cabac.c b/libavcodec/h264_cabac.c
new file mode 100644
index 0000000000..33e90b4d8f
--- /dev/null
+++ b/libavcodec/h264_cabac.c
@@ -0,0 +1,1785 @@
+/*
+ * 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 libavcodec/h264_cabac.c
+ * H.264 / AVC / MPEG4 part10 cabac decoding.
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#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;
+
+ /* calculate pre-state */
+ for( i= 0; i < 460; i++ ) {
+ int pre;
+ if( h->slice_type_nos == FF_I_TYPE )
+ pre = av_clip( ((cabac_context_init_I[i][0] * s->qscale) >>4 ) + cabac_context_init_I[i][1], 1, 126 );
+ else
+ pre = av_clip( ((cabac_context_init_PB[h->cabac_init_idc][i][0] * s->qscale) >>4 ) + cabac_context_init_PB[h->cabac_init_idc][i][1], 1, 126 );
+
+ if( pre <= 63 )
+ h->cabac_state[i] = 2 * ( 63 - pre ) + 0;
+ else
+ h->cabac_state[i] = 2 * ( pre - 64 ) + 1;
+ }
+}
+
+static int decode_cabac_field_decoding_flag(H264Context *h) {
+ MpegEncContext * const s = &h->s;
+ const int mb_x = s->mb_x;
+ const int mb_y = s->mb_y & ~1;
+ const int mba_xy = mb_x - 1 + mb_y *s->mb_stride;
+ const int mbb_xy = mb_x + (mb_y-2)*s->mb_stride;
+
+ unsigned int ctx = 0;
+
+ if( h->slice_table[mba_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) ) {
+ ctx += 1;
+ }
+ if( h->slice_table[mbb_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) ) {
+ ctx += 1;
+ }
+
+ 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){
+ MpegEncContext * const s = &h->s;
+ const int mba_xy = h->left_mb_xy[0];
+ const int mbb_xy = h->top_mb_xy;
+ int ctx=0;
+ if( h->slice_table[mba_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mba_xy] ) )
+ ctx++;
+ if( h->slice_table[mbb_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mbb_xy] ) )
+ ctx++;
+ if( get_cabac_noinline( &h->cabac, &state[ctx] ) == 0 )
+ return 0; /* I4x4 */
+ state += 2;
+ }else{
+ if( get_cabac_noinline( &h->cabac, &state[0] ) == 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_type_b( H264Context *h ) {
+ MpegEncContext * const s = &h->s;
+
+ const int mba_xy = h->left_mb_xy[0];
+ const int mbb_xy = h->top_mb_xy;
+ int ctx = 0;
+ int bits;
+ assert(h->slice_type_nos == FF_B_TYPE);
+
+ if( h->slice_table[mba_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mba_xy] ) )
+ ctx++;
+ if( h->slice_table[mbb_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mbb_xy] ) )
+ ctx++;
+
+ if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+ctx] ) )
+ return 0; /* B_Direct_16x16 */
+
+ if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+3] ) ) {
+ return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); /* B_L[01]_16x16 */
+ }
+
+ 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 )
+ return bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */
+ else if( bits == 13 ) {
+ return decode_cabac_intra_mb_type(h, 32, 0) + 23;
+ } else if( bits == 14 )
+ return 11; /* B_L1_L0_8x16 */
+ else if( bits == 15 )
+ return 22; /* B_8x8 */
+
+ bits= ( bits<<1 ) | get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
+ return bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */
+}
+
+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 == FF_B_TYPE )
+ 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] );
+
+ if( mode >= pred_mode )
+ return mode + 1;
+ else
+ return 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->slice_table[mba_xy] == h->slice_num && h->chroma_pred_mode_table[mba_xy] != 0 )
+ ctx++;
+
+ if( h->slice_table[mbb_xy] == h->slice_num && 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->slice_table[h->left_mb_xy[0]] == h->slice_num ? h->left_cbp : -1;
+ cbp_b = h->slice_table[h->top_mb_xy] == h->slice_num ? h->top_cbp : -1;
+
+ 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_mb_dqp( H264Context *h) {
+ int ctx= h->last_qscale_diff != 0;
+ int val = 0;
+
+ while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
+ ctx= 2+(ctx>>1);
+ val++;
+ if(val > 102) //prevent infinite loop
+ return INT_MIN;
+ }
+
+ if( val&0x01 )
+ return (val + 1)>>1 ;
+ else
+ return -((val + 1)>>1);
+}
+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 inline int decode_cabac_mb_transform_size( H264Context *h ) {
+ return get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] );
+}
+
+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 == FF_B_TYPE) {
+ if( refa > 0 && !h->direct_cache[scan8[n] - 1] )
+ ctx++;
+ if( refb > 0 && !h->direct_cache[scan8[n] - 8] )
+ 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 list, int n, int l ) {
+ int amvd = abs( h->mvd_cache[list][scan8[n] - 1][l] ) +
+ abs( h->mvd_cache[list][scan8[n] - 8][l] );
+ int ctxbase = (l == 0) ? 40 : 47;
+ int mvd;
+ int ctx = (amvd>2) + (amvd>32);
+
+ if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+ctx]))
+ return 0;
+
+ mvd= 1;
+ ctx= 3;
+ while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase+ctx] ) ) {
+ mvd++;
+ if( ctx < 6 )
+ ctx++;
+ }
+
+ 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-- ) {
+ if( get_cabac_bypass( &h->cabac ) )
+ mvd += 1 << k;
+ }
+ }
+ return get_cabac_bypass_sign( &h->cabac, -mvd );
+}
+
+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 {
+ 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
+
+
+ /* 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
+ */
+
+ /* read coded block flag */
+ if( is_dc || cat != 5 ) {
+ if( get_cabac( CC, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n, is_dc ) ] ) == 0 ) {
+ if( !is_dc )
+ h->non_zero_count_cache[scan8[n]] = 0;
+
+#ifdef CABAC_ON_STACK
+ h->cabac.range = cc.range ;
+ h->cabac.low = cc.low ;
+ h->cabac.bytestream= cc.bytestream;
+#endif
+ return;
+ }
+ }
+
+ 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;
+ } 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;
+ }
+ }
+
+ 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 ) {
+ block[j] = get_cabac_bypass_sign( CC, -1);
+ }else{
+ 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 ) {
+ block[j] = get_cabac_bypass_sign( CC, -coeff_abs );
+ }else{
+ block[j] = (get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32) >> 6;
+ }
+ }
+ } while( coeff_count );
+#ifdef CABAC_ON_STACK
+ h->cabac.range = cc.range ;
+ h->cabac.low = cc.low ;
+ h->cabac.bytestream= cc.bytestream;
+#endif
+
+}
+
+#if !CONFIG_SMALL
+static void decode_cabac_residual_dc( 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, 1);
+}
+
+static void decode_cabac_residual_nondc( 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);
+}
+#endif
+
+static void decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff ) {
+#if CONFIG_SMALL
+ decode_cabac_residual_internal(h, block, cat, n, scantable, qmul, max_coeff, cat == 0 || cat == 3);
+#else
+ if( cat == 0 || cat == 3 ) decode_cabac_residual_dc(h, block, cat, n, scantable, qmul, max_coeff);
+ else decode_cabac_residual_nondc(h, block, cat, n, scantable, qmul, max_coeff);
+#endif
+}
+
+static inline void compute_mb_neighbors(H264Context *h)
+{
+ MpegEncContext * const s = &h->s;
+ const int mb_xy = h->mb_xy;
+ h->top_mb_xy = mb_xy - s->mb_stride;
+ h->left_mb_xy[0] = mb_xy - 1;
+ if(FRAME_MBAFF){
+ const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride;
+ const int top_pair_xy = pair_xy - s->mb_stride;
+ const int top_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
+ const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
+ const int curr_mb_field_flag = MB_FIELD;
+ const int bottom = (s->mb_y & 1);
+
+ if (curr_mb_field_flag && (bottom || top_mb_field_flag)){
+ h->top_mb_xy -= s->mb_stride;
+ }
+ if (!left_mb_field_flag == curr_mb_field_flag) {
+ h->left_mb_xy[0] = pair_xy - 1;
+ }
+ } else if (FIELD_PICTURE) {
+ h->top_mb_xy -= s->mb_stride;
+ }
+ return;
+}
+
+/**
+ * decodes a macroblock
+ * @returns 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;
+
+ 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 != FF_I_TYPE ) {
+ int skip;
+ /* a skipped mb needs the aff flag from the following mb */
+ if( FRAME_MBAFF && s->mb_x==0 && (s->mb_y&1)==0 )
+ predict_field_decoding_flag(h);
+ 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;
+
+ compute_mb_neighbors(h);
+
+ if( h->slice_type_nos == FF_B_TYPE ) {
+ mb_type = decode_cabac_mb_type_b( h );
+ if( mb_type < 23 ){
+ partition_count= b_mb_type_info[mb_type].partition_count;
+ mb_type= b_mb_type_info[mb_type].type;
+ }else{
+ mb_type -= 23;
+ goto decode_intra_mb;
+ }
+ } else if( h->slice_type_nos == FF_P_TYPE ) {
+ 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 == FF_SI_TYPE && mb_type)
+ mb_type--;
+ assert(h->slice_type_nos == FF_I_TYPE);
+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 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, 256); ptr+=256;
+ if(CHROMA){
+ memcpy(h->mb+128, ptr, 128); ptr+=128;
+ }
+
+ 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, 16);
+ 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_caches(h, mb_type, 0);
+
+ if( IS_INTRA( mb_type ) ) {
+ int i, pred_mode;
+ if( IS_INTRA4x4( mb_type ) ) {
+ if( dct8x8_allowed && decode_cabac_mb_transform_size( h ) ) {
+ 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 if( partition_count == 4 ) {
+ int i, j, sub_partition_count[4], list, ref[2][4];
+
+ if( h->slice_type_nos == FF_B_TYPE ) {
+ 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;
+ if( h->ref_count[0] > 1 || h->ref_count[1] > 1 ) {
+ for( i = 0; i < 4; i++ )
+ if( IS_DIRECT(h->sub_mb_type[i]) )
+ fill_rectangle( &h->direct_cache[scan8[4*i]], 2, 2, 8, 1, 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, 4);
+ 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] ];
+ int16_t (* mvd_cache)[2]= &h->mvd_cache[list][ scan8[index] ];
+ pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mpx, &mpy);
+
+ mx = mpx + decode_cabac_mb_mvd( h, list, index, 0 );
+ my = mpy + decode_cabac_mb_mvd( h, list, index, 1 );
+ 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]= mx - mpx;
+ mvd_cache[ 1 ][1]=
+ mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= my - mpy;
+ }else if(IS_SUB_8X4(sub_mb_type)){
+ mv_cache[ 1 ][0]= mx;
+ mv_cache[ 1 ][1]= my;
+
+ mvd_cache[ 1 ][0]= mx - mpx;
+ mvd_cache[ 1 ][1]= my - mpy;
+ }else if(IS_SUB_4X8(sub_mb_type)){
+ mv_cache[ 8 ][0]= mx;
+ mv_cache[ 8 ][1]= my;
+
+ mvd_cache[ 8 ][0]= mx - mpx;
+ mvd_cache[ 8 ][1]= my - mpy;
+ }
+ mv_cache[ 0 ][0]= mx;
+ mv_cache[ 0 ][1]= my;
+
+ mvd_cache[ 0 ][0]= mx - mpx;
+ mvd_cache[ 0 ][1]= my - mpy;
+ }
+ }else{
+ uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
+ uint32_t *pd= (uint32_t *)&h->mvd_cache[list][ scan8[4*i] ][0];
+ p[0] = p[1] = p[8] = p[9] = 0;
+ pd[0]= pd[1]= pd[8]= pd[9]= 0;
+ }
+ }
+ }
+ } 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, 4);
+ fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 4);
+ dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
+ } else {
+ int list, mx, my, i, mpx, mpy;
+ 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);
+ }else
+ fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, (uint8_t)LIST_NOT_USED, 1); //FIXME factorize and the other fill_rect below too
+ }
+ for(list=0; list<h->list_count; list++){
+ if(IS_DIR(mb_type, 0, list)){
+ pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mpx, &mpy);
+
+ mx = mpx + decode_cabac_mb_mvd( h, list, 0, 0 );
+ my = mpy + decode_cabac_mb_mvd( h, list, 0, 1 );
+ tprintf(s->avctx, "final mv:%d %d\n", mx, my);
+
+ fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx-mpx,my-mpy), 4);
+ fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
+ }else
+ fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, 0, 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)){
+ pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mpx, &mpy);
+ mx = mpx + decode_cabac_mb_mvd( h, list, 8*i, 0 );
+ my = mpy + decode_cabac_mb_mvd( h, list, 8*i, 1 );
+ tprintf(s->avctx, "final mv:%d %d\n", mx, my);
+
+ fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx-mpx,my-mpy), 4);
+ 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, 4);
+ 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)){
+ pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mpx, &mpy);
+ mx = mpx + decode_cabac_mb_mvd( h, list, 4*i, 0 );
+ my = mpy + decode_cabac_mb_mvd( h, list, 4*i, 1 );
+
+ tprintf(s->avctx, "final mv:%d %d\n", mx, my);
+ fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx-mpx,my-mpy), 4);
+ 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, 4);
+ 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 ) ) {
+ if( decode_cabac_mb_transform_size( h ) )
+ mb_type |= MB_TYPE_8x8DCT;
+ }
+ s->current_picture.mb_type[mb_xy]= mb_type;
+
+ if( cbp || IS_INTRA16x16( mb_type ) ) {
+ const uint8_t *scan, *scan8x8, *dc_scan;
+ const uint32_t *qmul;
+ int dqp;
+
+ 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;
+ dc_scan= luma_dc_field_scan;
+ }else{
+ scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;
+ scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
+ dc_scan= luma_dc_zigzag_scan;
+ }
+
+ h->last_qscale_diff = dqp = decode_cabac_mb_dqp( h );
+ if( dqp == INT_MIN ){
+ 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;
+ }
+ s->qscale += dqp;
+ if(((unsigned)s->qscale) > 51){
+ if(s->qscale<0) s->qscale+= 52;
+ else s->qscale-= 52;
+ }
+ h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
+ h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
+
+ if( IS_INTRA16x16( mb_type ) ) {
+ int i;
+ //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" );
+ decode_cabac_residual( h, h->mb, 0, 0, dc_scan, NULL, 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(h, h->mb + 16*i, 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(h, h->mb + 64*i8x8, 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(h, h->mb + 16*index, 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(h, h->mb + 256 + 16*4*c, 3, c, chroma_dc_scan, NULL, 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(h, h->mb + 16*index, 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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 06:42:08 +0000