decode custom quant matrices.

based on a patch by anonymous, with optimizations by me.

Originally committed as revision 4660 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 39 insertions, 55 deletions

diff --git a/libavcodec/h264data.h b/libavcodec/h264data.h
index 3e326bf30f..05f80385f7 100644
--- a/libavcodec/h264data.h
+++ b/libavcodec/h264data.h
@@ -457,61 +457,45 @@ static const uint8_t div6[52]={
 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
 };
 
-static const uint16_t dequant_coeff[52][16]={
-{  10,  13,  10,  13,   13,  16,  13,  16,   10,  13,  10,  13,   13,  16,  13,  16, },
-{  11,  14,  11,  14,   14,  18,  14,  18,   11,  14,  11,  14,   14,  18,  14,  18, },
-{  13,  16,  13,  16,   16,  20,  16,  20,   13,  16,  13,  16,   16,  20,  16,  20, },
-{  14,  18,  14,  18,   18,  23,  18,  23,   14,  18,  14,  18,   18,  23,  18,  23, },
-{  16,  20,  16,  20,   20,  25,  20,  25,   16,  20,  16,  20,   20,  25,  20,  25, },
-{  18,  23,  18,  23,   23,  29,  23,  29,   18,  23,  18,  23,   23,  29,  23,  29, },
-{  20,  26,  20,  26,   26,  32,  26,  32,   20,  26,  20,  26,   26,  32,  26,  32, },
-{  22,  28,  22,  28,   28,  36,  28,  36,   22,  28,  22,  28,   28,  36,  28,  36, },
-{  26,  32,  26,  32,   32,  40,  32,  40,   26,  32,  26,  32,   32,  40,  32,  40, },
-{  28,  36,  28,  36,   36,  46,  36,  46,   28,  36,  28,  36,   36,  46,  36,  46, },
-{  32,  40,  32,  40,   40,  50,  40,  50,   32,  40,  32,  40,   40,  50,  40,  50, },
-{  36,  46,  36,  46,   46,  58,  46,  58,   36,  46,  36,  46,   46,  58,  46,  58, },
-{  40,  52,  40,  52,   52,  64,  52,  64,   40,  52,  40,  52,   52,  64,  52,  64, },
-{  44,  56,  44,  56,   56,  72,  56,  72,   44,  56,  44,  56,   56,  72,  56,  72, },
-{  52,  64,  52,  64,   64,  80,  64,  80,   52,  64,  52,  64,   64,  80,  64,  80, },
-{  56,  72,  56,  72,   72,  92,  72,  92,   56,  72,  56,  72,   72,  92,  72,  92, },
-{  64,  80,  64,  80,   80, 100,  80, 100,   64,  80,  64,  80,   80, 100,  80, 100, },
-{  72,  92,  72,  92,   92, 116,  92, 116,   72,  92,  72,  92,   92, 116,  92, 116, },
-{  80, 104,  80, 104,  104, 128, 104, 128,   80, 104,  80, 104,  104, 128, 104, 128, },
-{  88, 112,  88, 112,  112, 144, 112, 144,   88, 112,  88, 112,  112, 144, 112, 144, },
-{ 104, 128, 104, 128,  128, 160, 128, 160,  104, 128, 104, 128,  128, 160, 128, 160, },
-{ 112, 144, 112, 144,  144, 184, 144, 184,  112, 144, 112, 144,  144, 184, 144, 184, },
-{ 128, 160, 128, 160,  160, 200, 160, 200,  128, 160, 128, 160,  160, 200, 160, 200, },
-{ 144, 184, 144, 184,  184, 232, 184, 232,  144, 184, 144, 184,  184, 232, 184, 232, },
-{ 160, 208, 160, 208,  208, 256, 208, 256,  160, 208, 160, 208,  208, 256, 208, 256, },
-{ 176, 224, 176, 224,  224, 288, 224, 288,  176, 224, 176, 224,  224, 288, 224, 288, },
-{ 208, 256, 208, 256,  256, 320, 256, 320,  208, 256, 208, 256,  256, 320, 256, 320, },
-{ 224, 288, 224, 288,  288, 368, 288, 368,  224, 288, 224, 288,  288, 368, 288, 368, },
-{ 256, 320, 256, 320,  320, 400, 320, 400,  256, 320, 256, 320,  320, 400, 320, 400, },
-{ 288, 368, 288, 368,  368, 464, 368, 464,  288, 368, 288, 368,  368, 464, 368, 464, },
-{ 320, 416, 320, 416,  416, 512, 416, 512,  320, 416, 320, 416,  416, 512, 416, 512, },
-{ 352, 448, 352, 448,  448, 576, 448, 576,  352, 448, 352, 448,  448, 576, 448, 576, },
-{ 416, 512, 416, 512,  512, 640, 512, 640,  416, 512, 416, 512,  512, 640, 512, 640, },
-{ 448, 576, 448, 576,  576, 736, 576, 736,  448, 576, 448, 576,  576, 736, 576, 736, },
-{ 512, 640, 512, 640,  640, 800, 640, 800,  512, 640, 512, 640,  640, 800, 640, 800, },
-{ 576, 736, 576, 736,  736, 928, 736, 928,  576, 736, 576, 736,  736, 928, 736, 928, },
-{ 640, 832, 640, 832,  832,1024, 832,1024,  640, 832, 640, 832,  832,1024, 832,1024, },
-{ 704, 896, 704, 896,  896,1152, 896,1152,  704, 896, 704, 896,  896,1152, 896,1152, },
-{ 832,1024, 832,1024, 1024,1280,1024,1280,  832,1024, 832,1024, 1024,1280,1024,1280, },
-{ 896,1152, 896,1152, 1152,1472,1152,1472,  896,1152, 896,1152, 1152,1472,1152,1472, },
-{1024,1280,1024,1280, 1280,1600,1280,1600, 1024,1280,1024,1280, 1280,1600,1280,1600, },
-{1152,1472,1152,1472, 1472,1856,1472,1856, 1152,1472,1152,1472, 1472,1856,1472,1856, },
-{1280,1664,1280,1664, 1664,2048,1664,2048, 1280,1664,1280,1664, 1664,2048,1664,2048, },
-{1408,1792,1408,1792, 1792,2304,1792,2304, 1408,1792,1408,1792, 1792,2304,1792,2304, },
-{1664,2048,1664,2048, 2048,2560,2048,2560, 1664,2048,1664,2048, 2048,2560,2048,2560, },
-{1792,2304,1792,2304, 2304,2944,2304,2944, 1792,2304,1792,2304, 2304,2944,2304,2944, },
-{2048,2560,2048,2560, 2560,3200,2560,3200, 2048,2560,2048,2560, 2560,3200,2560,3200, },
-{2304,2944,2304,2944, 2944,3712,2944,3712, 2304,2944,2304,2944, 2944,3712,2944,3712, },
-{2560,3328,2560,3328, 3328,4096,3328,4096, 2560,3328,2560,3328, 3328,4096,3328,4096, },
-{2816,3584,2816,3584, 3584,4608,3584,4608, 2816,3584,2816,3584, 3584,4608,3584,4608, },
-{3328,4096,3328,4096, 4096,5120,4096,5120, 3328,4096,3328,4096, 4096,5120,4096,5120, },
-{3584,4608,3584,4608, 4608,5888,4608,5888, 3584,4608,3584,4608, 4608,5888,4608,5888, },
-//{4096,5120,4096,5120, 5120,6400,5120,6400, 4096,5120,4096,5120, 5120,6400,5120,6400, },
-//{4608,5888,4608,5888, 5888,7424,5888,7424, 4608,5888,4608,5888, 5888,7424,5888,7424, },
+static const uint8_t default_scaling4[2][16]={
+{   6,13,20,28,
+   13,20,28,32,
+   20,28,32,37,
+   28,32,37,42
+},{
+   10,14,20,24,
+   14,20,24,27,
+   20,24,27,30,
+   24,27,30,34
+}};
+
+static const uint8_t default_scaling8[2][64]={
+{   6,10,13,16,18,23,25,27,
+   10,11,16,18,23,25,27,29,
+   13,16,18,23,25,27,29,31,
+   16,18,23,25,27,29,31,33,
+   18,23,25,27,29,31,33,36,
+   23,25,27,29,31,33,36,38,
+   25,27,29,31,33,36,38,40,
+   27,29,31,33,36,38,40,42
+},{
+    9,13,15,17,19,21,22,24,
+   13,13,17,19,21,22,24,25,
+   15,17,19,21,22,24,25,27,
+   17,19,21,22,24,25,27,28,
+   19,21,22,24,25,27,28,30,
+   21,22,24,25,27,28,30,32,
+   22,24,25,27,28,30,32,33,
+   24,25,27,28,30,32,33,35
+}};
+
+static const int dequant4_coeff_init[6][3]={
+  {10,13,16},
+  {11,14,18},
+  {13,16,20},
+  {14,18,23},
+  {16,20,25},
+  {18,23,29},
 };
 
 static const int dequant8_coeff_init_scan[16] = {