Data tables for future RV30/40 decoder

Originally committed as revision 11089 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 116 insertions, 0 deletions

diff --git a/libavcodec/rv40data.h b/libavcodec/rv40data.h
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+++ b/libavcodec/rv40data.h
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+/*
+ * RealVideo 4 decoder
+ * copyright (c) 2007 Konstantin Shishkov
+ *
+ * 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 rv40data.h
+ * Miscellaneous RV40 tables.
+ */
+
+#ifndef FFMPEG_RV40DATA_H
+#define FFMPEG_RV40DATA_H
+
+#include <stdint.h>
+
+/**
+ * Standard widths and heights coded in RV40
+ */
+//@{
+static const int rv40_standard_widths[]   = { 160, 172, 240, 320, 352, 640, 704, 0};
+static const int rv40_standard_heights[]  = { 120, 132, 144, 240, 288, 480, 0, 0};
+static const int rv40_standard_heights2[] = { 180, 360, 576, 0};
+//@}
+
+#define MODE2_PATTERNS_NUM 20
+/**
+ * Intra types table
+ *
+ * These values are actually coded 3-tuples
+ * used for detecting standard block configurations
+ */
+static const uint16_t rv40_aic_table_index[MODE2_PATTERNS_NUM] = {
+ 0x000, 0x100, 0x200,
+ 0x011, 0x111, 0x211, 0x511, 0x611,
+ 0x022, 0x122, 0x222, 0x722,
+ 0x272, 0x227,
+ 0x822, 0x282, 0x228,
+ 0x112, 0x116, 0x221
+};
+
+/**
+ * Luma quantizer values
+ * Second table is used for inter blocks
+ */
+static const uint8_t rv40_luma_dc_quant[2][32] = {
+ {  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+   16, 17, 17, 18, 18, 18, 19, 19, 19, 20, 20, 20, 22, 22, 22, 22 },
+ {  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
+   16, 17, 18, 19, 20, 20, 21, 21, 22, 23, 23, 23, 24, 24, 24, 24 }
+};
+
+/**
+ * @begingroup loopfilter coefficients used by RV40 loop filter
+ * @{
+ */
+/**
+ * Dither values for deblocking filter - left/top values
+ */
+static const uint8_t rv40_dither_l[16] = {
+    0x40, 0x50, 0x20, 0x60, 0x30, 0x50, 0x40, 0x30,
+    0x50, 0x40, 0x50, 0x30, 0x60, 0x20, 0x50, 0x40
+};
+/**
+ * Dither values for deblocking filter - right/bottom values
+ */
+static const uint8_t rv40_dither_r[16] = {
+    0x40, 0x30, 0x60, 0x20, 0x50, 0x30, 0x30, 0x40,
+    0x40, 0x40, 0x50, 0x30, 0x20, 0x60, 0x30, 0x40
+};
+
+/** alpha parameter for RV40 loop filter - almost the same as in JVT-A003r1 */
+static const uint8_t rv40_alpha_tab[32] = {
+    128, 128, 128, 128, 128, 128, 128, 128,
+    128, 128, 122,  96,  75,  59,  47,  37,
+     29,  23,  18,  15,  13,  11,  10,   9,
+      8,   7,   6,   5,   4,   3,   2,   1
+};
+/** beta parameter for RV40 loop filter - almost the same as in JVT-A003r1 */
+static const uint8_t rv40_beta_tab[32] = {
+     0,  0,  0,  0,  0,  0,  0,  0,  3,  3,  3,  4,  4,  4,  6,  6,
+     6,  7,  8,  8,  9,  9, 10, 10, 11, 11, 12, 13, 14, 15, 16, 17
+};
+/** clip table for RV40 loop filter - the same as in JVT-A003r1 */
+static const uint8_t rv40_filter_clip_tbl[3][32] = {
+    {
+        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
+    },
+    {
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 5, 5
+    },
+    {
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1,
+        1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 5, 5, 7, 8, 9
+    }
+};
+/** @} */ // end loopfilter group
+
+#endif /* FFMPEG_RV40DATA_H */