VP5 and VP6 video decoder

Originally committed as revision 6213 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 65 insertions, 0 deletions

diff --git a/libavcodec/vp56data.c b/libavcodec/vp56data.c
new file mode 100644
index 0000000000..7e73cea262
--- /dev/null
+++ b/libavcodec/vp56data.c
@@ -0,0 +1,65 @@
+/**
+ * @file vp56data.c
+ * VP5 and VP6 compatible video decoder (common data)
+ *
+ * Copyright (C) 2006  Aurelien Jacobs <aurel@gnuage.org>
+ *
+ * This library 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.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <inttypes.h>
+#include "vp56data.h"
+
+const uint8_t vp56_b6to3[] = { 0, 0, 0, 0, 1, 2 };
+const uint8_t vp56_b6to4[] = { 0, 0, 1, 1, 2, 3 };
+
+const uint8_t vp56_coeff_parse_table[6][11] = {
+    { 159,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0 },
+    { 145, 165,   0,   0,   0,   0,   0,   0,   0,   0,   0 },
+    { 140, 148, 173,   0,   0,   0,   0,   0,   0,   0,   0 },
+    { 135, 140, 155, 176,   0,   0,   0,   0,   0,   0,   0 },
+    { 130, 134, 141, 157, 180,   0,   0,   0,   0,   0,   0 },
+    { 129, 130, 133, 140, 153, 177, 196, 230, 243, 254, 254 },
+};
+
+const uint8_t vp56_def_mb_types_stats[3][10][2] = {
+    { {  69, 42 }, {   1,  2 }, {  1,   7 }, {  44, 42 }, {  6, 22 },
+      {   1,  3 }, {   0,  2 }, {  1,   5 }, {   0,  1 }, {  0,  0 }, },
+    { { 229,  8 }, {   1,  1 }, {  0,   8 }, {   0,  0 }, {  0,  0 },
+      {   1,  2 }, {   0,  1 }, {  0,   0 }, {   1,  1 }, {  0,  0 }, },
+    { { 122, 35 }, {   1,  1 }, {  1,   6 }, {  46, 34 }, {  0,  0 },
+      {   1,  2 }, {   0,  1 }, {  0,   1 }, {   1,  1 }, {  0,  0 }, },
+};
+
+const vp56_tree_t vp56_pva_tree[] = {
+    { 8, 0},
+    { 4, 1},
+    { 2, 2}, {-0}, {-1},
+    { 2, 3}, {-2}, {-3},
+    { 4, 4},
+    { 2, 5}, {-4}, {-5},
+    { 2, 6}, {-6}, {-7},
+};
+
+const vp56_tree_t vp56_pc_tree[] = {
+    { 4, 6},
+    { 2, 7}, {-0}, {-1},
+    { 4, 8},
+    { 2, 9}, {-2}, {-3},
+    { 2,10}, {-4}, {-5},
+};
+
+const uint8_t vp56_coeff_bias[] = { 5, 7, 11, 19, 35, 67 };
+const uint8_t vp56_coeff_bit_length[] = { 0, 1, 2, 3, 4, 10 };