--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2011 Christian König.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/**
+ * This file is based uppon slice_xvmc.c and vlc.h from the xine project,
+ * which in turn is based on mpeg2dec. The following is the original copyright:
+ *
+ * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
+ * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ *
+ * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
+ * See http://libmpeg2.sourceforge.net/ for updates.
+ *
+ * mpeg2dec is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpeg2dec 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdint.h>
+
+#include <pipe/p_video_state.h>
+
+#include "vl_vlc.h"
+#include "vl_mpeg12_bitstream.h"
+
+/* take num bits from the high part of bit_buf and zero extend them */
+#define UBITS(buf,num) (((uint32_t)(buf)) >> (32 - (num)))
+
+/* take num bits from the high part of bit_buf and sign extend them */
+#define SBITS(buf,num) (((int32_t)(buf)) >> (32 - (num)))
+
+#define SATURATE(val) \
+do { \
+ if ((uint32_t)(val + 2048) > 4095) \
+ val = (val > 0) ? 2047 : -2048; \
+} while (0)
+
+/* macroblock modes */
+#define MACROBLOCK_INTRA 1
+#define MACROBLOCK_PATTERN 2
+#define MACROBLOCK_MOTION_BACKWARD 4
+#define MACROBLOCK_MOTION_FORWARD 8
+#define MACROBLOCK_QUANT 16
+#define DCT_TYPE_INTERLACED 32
+
+/* motion_type */
+#define MOTION_TYPE_MASK (3*64)
+#define MOTION_TYPE_BASE 64
+#define MC_FIELD (1*64)
+#define MC_FRAME (2*64)
+#define MC_16X8 (2*64)
+#define MC_DMV (3*64)
+
+/* picture structure */
+#define TOP_FIELD 1
+#define BOTTOM_FIELD 2
+#define FRAME_PICTURE 3
+
+/* picture coding type (mpeg2 header) */
+#define I_TYPE 1
+#define P_TYPE 2
+#define B_TYPE 3
+#define D_TYPE 4
+
+typedef struct {
+ uint8_t modes;
+ uint8_t len;
+} MBtab;
+
+typedef struct {
+ uint8_t delta;
+ uint8_t len;
+} MVtab;
+
+typedef struct {
+ int8_t dmv;
+ uint8_t len;
+} DMVtab;
+
+typedef struct {
+ uint8_t cbp;
+ uint8_t len;
+} CBPtab;
+
+typedef struct {
+ uint8_t size;
+ uint8_t len;
+} DCtab;
+
+typedef struct {
+ uint8_t run;
+ uint8_t level;
+ uint8_t len;
+} DCTtab;
+
+typedef struct {
+ uint8_t mba;
+ uint8_t len;
+} MBAtab;
+
+#define INTRA MACROBLOCK_INTRA
+#define QUANT MACROBLOCK_QUANT
+#define MC MACROBLOCK_MOTION_FORWARD
+#define CODED MACROBLOCK_PATTERN
+#define FWD MACROBLOCK_MOTION_FORWARD
+#define BWD MACROBLOCK_MOTION_BACKWARD
+#define INTER MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD
+
+static const MBtab MB_I [] = {
+ {INTRA|QUANT, 2}, {INTRA, 1}
+};
+
+static const MBtab MB_P [] = {
+ {INTRA|QUANT, 6}, {CODED|QUANT, 5}, {MC|CODED|QUANT, 5}, {INTRA, 5},
+ {MC, 3}, {MC, 3}, {MC, 3}, {MC, 3},
+ {CODED, 2}, {CODED, 2}, {CODED, 2}, {CODED, 2},
+ {CODED, 2}, {CODED, 2}, {CODED, 2}, {CODED, 2},
+ {MC|CODED, 1}, {MC|CODED, 1}, {MC|CODED, 1}, {MC|CODED, 1},
+ {MC|CODED, 1}, {MC|CODED, 1}, {MC|CODED, 1}, {MC|CODED, 1},
+ {MC|CODED, 1}, {MC|CODED, 1}, {MC|CODED, 1}, {MC|CODED, 1},
+ {MC|CODED, 1}, {MC|CODED, 1}, {MC|CODED, 1}, {MC|CODED, 1}
+};
+
+static const MBtab MB_B [] = {
+ {0, 0}, {INTRA|QUANT, 6},
+ {BWD|CODED|QUANT, 6}, {FWD|CODED|QUANT, 6},
+ {INTER|CODED|QUANT, 5}, {INTER|CODED|QUANT, 5},
+ {INTRA, 5}, {INTRA, 5},
+ {FWD, 4}, {FWD, 4}, {FWD, 4}, {FWD, 4},
+ {FWD|CODED, 4}, {FWD|CODED, 4}, {FWD|CODED, 4}, {FWD|CODED, 4},
+ {BWD, 3}, {BWD, 3}, {BWD, 3}, {BWD, 3},
+ {BWD, 3}, {BWD, 3}, {BWD, 3}, {BWD, 3},
+ {BWD|CODED, 3}, {BWD|CODED, 3}, {BWD|CODED, 3}, {BWD|CODED, 3},
+ {BWD|CODED, 3}, {BWD|CODED, 3}, {BWD|CODED, 3}, {BWD|CODED, 3},
+ {INTER, 2}, {INTER, 2}, {INTER, 2}, {INTER, 2},
+ {INTER, 2}, {INTER, 2}, {INTER, 2}, {INTER, 2},
+ {INTER, 2}, {INTER, 2}, {INTER, 2}, {INTER, 2},
+ {INTER, 2}, {INTER, 2}, {INTER, 2}, {INTER, 2},
+ {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2},
+ {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2},
+ {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2},
+ {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}, {INTER|CODED, 2}
+};
+
+#undef INTRA
+#undef QUANT
+#undef MC
+#undef CODED
+#undef FWD
+#undef BWD
+#undef INTER
+
+static const MVtab MV_4 [] = {
+ { 3, 6}, { 2, 4}, { 1, 3}, { 1, 3}, { 0, 2}, { 0, 2}, { 0, 2}, { 0, 2}
+};
+
+static const MVtab MV_10 [] = {
+ { 0,10}, { 0,10}, { 0,10}, { 0,10}, { 0,10}, { 0,10}, { 0,10}, { 0,10},
+ { 0,10}, { 0,10}, { 0,10}, { 0,10}, {15,10}, {14,10}, {13,10}, {12,10},
+ {11,10}, {10,10}, { 9, 9}, { 9, 9}, { 8, 9}, { 8, 9}, { 7, 9}, { 7, 9},
+ { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7}, { 6, 7},
+ { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7}, { 5, 7},
+ { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}, { 4, 7}
+};
+
+static const DMVtab DMV_2 [] = {
+ { 0, 1}, { 0, 1}, { 1, 2}, {-1, 2}
+};
+
+static const CBPtab CBP_7 [] = {
+ {0x22, 7}, {0x12, 7}, {0x0a, 7}, {0x06, 7},
+ {0x21, 7}, {0x11, 7}, {0x09, 7}, {0x05, 7},
+ {0x3f, 6}, {0x3f, 6}, {0x03, 6}, {0x03, 6},
+ {0x24, 6}, {0x24, 6}, {0x18, 6}, {0x18, 6},
+ {0x3e, 5}, {0x3e, 5}, {0x3e, 5}, {0x3e, 5},
+ {0x02, 5}, {0x02, 5}, {0x02, 5}, {0x02, 5},
+ {0x3d, 5}, {0x3d, 5}, {0x3d, 5}, {0x3d, 5},
+ {0x01, 5}, {0x01, 5}, {0x01, 5}, {0x01, 5},
+ {0x38, 5}, {0x38, 5}, {0x38, 5}, {0x38, 5},
+ {0x34, 5}, {0x34, 5}, {0x34, 5}, {0x34, 5},
+ {0x2c, 5}, {0x2c, 5}, {0x2c, 5}, {0x2c, 5},
+ {0x1c, 5}, {0x1c, 5}, {0x1c, 5}, {0x1c, 5},
+ {0x28, 5}, {0x28, 5}, {0x28, 5}, {0x28, 5},
+ {0x14, 5}, {0x14, 5}, {0x14, 5}, {0x14, 5},
+ {0x30, 5}, {0x30, 5}, {0x30, 5}, {0x30, 5},
+ {0x0c, 5}, {0x0c, 5}, {0x0c, 5}, {0x0c, 5},
+ {0x20, 4}, {0x20, 4}, {0x20, 4}, {0x20, 4},
+ {0x20, 4}, {0x20, 4}, {0x20, 4}, {0x20, 4},
+ {0x10, 4}, {0x10, 4}, {0x10, 4}, {0x10, 4},
+ {0x10, 4}, {0x10, 4}, {0x10, 4}, {0x10, 4},
+ {0x08, 4}, {0x08, 4}, {0x08, 4}, {0x08, 4},
+ {0x08, 4}, {0x08, 4}, {0x08, 4}, {0x08, 4},
+ {0x04, 4}, {0x04, 4}, {0x04, 4}, {0x04, 4},
+ {0x04, 4}, {0x04, 4}, {0x04, 4}, {0x04, 4},
+ {0x3c, 3}, {0x3c, 3}, {0x3c, 3}, {0x3c, 3},
+ {0x3c, 3}, {0x3c, 3}, {0x3c, 3}, {0x3c, 3},
+ {0x3c, 3}, {0x3c, 3}, {0x3c, 3}, {0x3c, 3},
+ {0x3c, 3}, {0x3c, 3}, {0x3c, 3}, {0x3c, 3}
+};
+
+static const CBPtab CBP_9 [] = {
+ {0, 0}, {0x00, 9}, {0x27, 9}, {0x1b, 9},
+ {0x3b, 9}, {0x37, 9}, {0x2f, 9}, {0x1f, 9},
+ {0x3a, 8}, {0x3a, 8}, {0x36, 8}, {0x36, 8},
+ {0x2e, 8}, {0x2e, 8}, {0x1e, 8}, {0x1e, 8},
+ {0x39, 8}, {0x39, 8}, {0x35, 8}, {0x35, 8},
+ {0x2d, 8}, {0x2d, 8}, {0x1d, 8}, {0x1d, 8},
+ {0x26, 8}, {0x26, 8}, {0x1a, 8}, {0x1a, 8},
+ {0x25, 8}, {0x25, 8}, {0x19, 8}, {0x19, 8},
+ {0x2b, 8}, {0x2b, 8}, {0x17, 8}, {0x17, 8},
+ {0x33, 8}, {0x33, 8}, {0x0f, 8}, {0x0f, 8},
+ {0x2a, 8}, {0x2a, 8}, {0x16, 8}, {0x16, 8},
+ {0x32, 8}, {0x32, 8}, {0x0e, 8}, {0x0e, 8},
+ {0x29, 8}, {0x29, 8}, {0x15, 8}, {0x15, 8},
+ {0x31, 8}, {0x31, 8}, {0x0d, 8}, {0x0d, 8},
+ {0x23, 8}, {0x23, 8}, {0x13, 8}, {0x13, 8},
+ {0x0b, 8}, {0x0b, 8}, {0x07, 8}, {0x07, 8}
+};
+
+static const DCtab DC_lum_5 [] = {
+ {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
+ {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
+ {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
+ {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}
+};
+
+static const DCtab DC_chrom_5 [] = {
+ {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
+ {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
+ {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}, {5, 5}
+};
+
+static const DCtab DC_long [] = {
+ {6, 5}, {6, 5}, {6, 5}, {6, 5}, {6, 5}, {6, 5}, { 6, 5}, { 6, 5},
+ {6, 5}, {6, 5}, {6, 5}, {6, 5}, {6, 5}, {6, 5}, { 6, 5}, { 6, 5},
+ {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, { 7, 6}, { 7, 6},
+ {8, 7}, {8, 7}, {8, 7}, {8, 7}, {9, 8}, {9, 8}, {10, 9}, {11, 9}
+};
+
+static const DCTtab DCT_16 [] = {
+ {129, 0, 0}, {129, 0, 0}, {129, 0, 0}, {129, 0, 0},
+ {129, 0, 0}, {129, 0, 0}, {129, 0, 0}, {129, 0, 0},
+ {129, 0, 0}, {129, 0, 0}, {129, 0, 0}, {129, 0, 0},
+ {129, 0, 0}, {129, 0, 0}, {129, 0, 0}, {129, 0, 0},
+ { 2,18, 0}, { 2,17, 0}, { 2,16, 0}, { 2,15, 0},
+ { 7, 3, 0}, { 17, 2, 0}, { 16, 2, 0}, { 15, 2, 0},
+ { 14, 2, 0}, { 13, 2, 0}, { 12, 2, 0}, { 32, 1, 0},
+ { 31, 1, 0}, { 30, 1, 0}, { 29, 1, 0}, { 28, 1, 0}
+};
+
+static const DCTtab DCT_15 [] = {
+ { 1,40,15}, { 1,39,15}, { 1,38,15}, { 1,37,15},
+ { 1,36,15}, { 1,35,15}, { 1,34,15}, { 1,33,15},
+ { 1,32,15}, { 2,14,15}, { 2,13,15}, { 2,12,15},
+ { 2,11,15}, { 2,10,15}, { 2, 9,15}, { 2, 8,15},
+ { 1,31,14}, { 1,31,14}, { 1,30,14}, { 1,30,14},
+ { 1,29,14}, { 1,29,14}, { 1,28,14}, { 1,28,14},
+ { 1,27,14}, { 1,27,14}, { 1,26,14}, { 1,26,14},
+ { 1,25,14}, { 1,25,14}, { 1,24,14}, { 1,24,14},
+ { 1,23,14}, { 1,23,14}, { 1,22,14}, { 1,22,14},
+ { 1,21,14}, { 1,21,14}, { 1,20,14}, { 1,20,14},
+ { 1,19,14}, { 1,19,14}, { 1,18,14}, { 1,18,14},
+ { 1,17,14}, { 1,17,14}, { 1,16,14}, { 1,16,14}
+};
+
+static const DCTtab DCT_13 [] = {
+ { 11, 2,13}, { 10, 2,13}, { 6, 3,13}, { 4, 4,13},
+ { 3, 5,13}, { 2, 7,13}, { 2, 6,13}, { 1,15,13},
+ { 1,14,13}, { 1,13,13}, { 1,12,13}, { 27, 1,13},
+ { 26, 1,13}, { 25, 1,13}, { 24, 1,13}, { 23, 1,13},
+ { 1,11,12}, { 1,11,12}, { 9, 2,12}, { 9, 2,12},
+ { 5, 3,12}, { 5, 3,12}, { 1,10,12}, { 1,10,12},
+ { 3, 4,12}, { 3, 4,12}, { 8, 2,12}, { 8, 2,12},
+ { 22, 1,12}, { 22, 1,12}, { 21, 1,12}, { 21, 1,12},
+ { 1, 9,12}, { 1, 9,12}, { 20, 1,12}, { 20, 1,12},
+ { 19, 1,12}, { 19, 1,12}, { 2, 5,12}, { 2, 5,12},
+ { 4, 3,12}, { 4, 3,12}, { 1, 8,12}, { 1, 8,12},
+ { 7, 2,12}, { 7, 2,12}, { 18, 1,12}, { 18, 1,12}
+};
+
+static const DCTtab DCT_B14_10 [] = {
+ { 17, 1,10}, { 6, 2,10}, { 1, 7,10}, { 3, 3,10},
+ { 2, 4,10}, { 16, 1,10}, { 15, 1,10}, { 5, 2,10}
+};
+
+static const DCTtab DCT_B14_8 [] = {
+ { 65, 0, 6}, { 65, 0, 6}, { 65, 0, 6}, { 65, 0, 6},
+ { 3, 2, 7}, { 3, 2, 7}, { 10, 1, 7}, { 10, 1, 7},
+ { 1, 4, 7}, { 1, 4, 7}, { 9, 1, 7}, { 9, 1, 7},
+ { 8, 1, 6}, { 8, 1, 6}, { 8, 1, 6}, { 8, 1, 6},
+ { 7, 1, 6}, { 7, 1, 6}, { 7, 1, 6}, { 7, 1, 6},
+ { 2, 2, 6}, { 2, 2, 6}, { 2, 2, 6}, { 2, 2, 6},
+ { 6, 1, 6}, { 6, 1, 6}, { 6, 1, 6}, { 6, 1, 6},
+ { 14, 1, 8}, { 1, 6, 8}, { 13, 1, 8}, { 12, 1, 8},
+ { 4, 2, 8}, { 2, 3, 8}, { 1, 5, 8}, { 11, 1, 8}
+};
+
+static const DCTtab DCT_B14AC_5 [] = {
+ { 1, 3, 5}, { 5, 1, 5}, { 4, 1, 5},
+ { 1, 2, 4}, { 1, 2, 4}, { 3, 1, 4}, { 3, 1, 4},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ {129, 0, 2}, {129, 0, 2}, {129, 0, 2}, {129, 0, 2},
+ {129, 0, 2}, {129, 0, 2}, {129, 0, 2}, {129, 0, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}
+};
+
+static const DCTtab DCT_B14DC_5 [] = {
+ { 1, 3, 5}, { 5, 1, 5}, { 4, 1, 5},
+ { 1, 2, 4}, { 1, 2, 4}, { 3, 1, 4}, { 3, 1, 4},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ { 1, 1, 1}, { 1, 1, 1}, { 1, 1, 1}, { 1, 1, 1},
+ { 1, 1, 1}, { 1, 1, 1}, { 1, 1, 1}, { 1, 1, 1},
+ { 1, 1, 1}, { 1, 1, 1}, { 1, 1, 1}, { 1, 1, 1},
+ { 1, 1, 1}, { 1, 1, 1}, { 1, 1, 1}, { 1, 1, 1}
+};
+
+static const DCTtab DCT_B15_10 [] = {
+ { 6, 2, 9}, { 6, 2, 9}, { 15, 1, 9}, { 15, 1, 9},
+ { 3, 4,10}, { 17, 1,10}, { 16, 1, 9}, { 16, 1, 9}
+};
+
+static const DCTtab DCT_B15_8 [] = {
+ { 65, 0, 6}, { 65, 0, 6}, { 65, 0, 6}, { 65, 0, 6},
+ { 8, 1, 7}, { 8, 1, 7}, { 9, 1, 7}, { 9, 1, 7},
+ { 7, 1, 7}, { 7, 1, 7}, { 3, 2, 7}, { 3, 2, 7},
+ { 1, 7, 6}, { 1, 7, 6}, { 1, 7, 6}, { 1, 7, 6},
+ { 1, 6, 6}, { 1, 6, 6}, { 1, 6, 6}, { 1, 6, 6},
+ { 5, 1, 6}, { 5, 1, 6}, { 5, 1, 6}, { 5, 1, 6},
+ { 6, 1, 6}, { 6, 1, 6}, { 6, 1, 6}, { 6, 1, 6},
+ { 2, 5, 8}, { 12, 1, 8}, { 1,11, 8}, { 1,10, 8},
+ { 14, 1, 8}, { 13, 1, 8}, { 4, 2, 8}, { 2, 4, 8},
+ { 3, 1, 5}, { 3, 1, 5}, { 3, 1, 5}, { 3, 1, 5},
+ { 3, 1, 5}, { 3, 1, 5}, { 3, 1, 5}, { 3, 1, 5},
+ { 2, 2, 5}, { 2, 2, 5}, { 2, 2, 5}, { 2, 2, 5},
+ { 2, 2, 5}, { 2, 2, 5}, { 2, 2, 5}, { 2, 2, 5},
+ { 4, 1, 5}, { 4, 1, 5}, { 4, 1, 5}, { 4, 1, 5},
+ { 4, 1, 5}, { 4, 1, 5}, { 4, 1, 5}, { 4, 1, 5},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3}, { 2, 1, 3},
+ {129, 0, 4}, {129, 0, 4}, {129, 0, 4}, {129, 0, 4},
+ {129, 0, 4}, {129, 0, 4}, {129, 0, 4}, {129, 0, 4},
+ {129, 0, 4}, {129, 0, 4}, {129, 0, 4}, {129, 0, 4},
+ {129, 0, 4}, {129, 0, 4}, {129, 0, 4}, {129, 0, 4},
+ { 1, 3, 4}, { 1, 3, 4}, { 1, 3, 4}, { 1, 3, 4},
+ { 1, 3, 4}, { 1, 3, 4}, { 1, 3, 4}, { 1, 3, 4},
+ { 1, 3, 4}, { 1, 3, 4}, { 1, 3, 4}, { 1, 3, 4},
+ { 1, 3, 4}, { 1, 3, 4}, { 1, 3, 4}, { 1, 3, 4},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2}, { 1, 1, 2},
+ { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3},
+ { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3},
+ { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3},
+ { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3},
+ { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3},
+ { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3},
+ { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3},
+ { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3}, { 1, 2, 3},
+ { 1, 4, 5}, { 1, 4, 5}, { 1, 4, 5}, { 1, 4, 5},
+ { 1, 4, 5}, { 1, 4, 5}, { 1, 4, 5}, { 1, 4, 5},
+ { 1, 5, 5}, { 1, 5, 5}, { 1, 5, 5}, { 1, 5, 5},
+ { 1, 5, 5}, { 1, 5, 5}, { 1, 5, 5}, { 1, 5, 5},
+ { 10, 1, 7}, { 10, 1, 7}, { 2, 3, 7}, { 2, 3, 7},
+ { 11, 1, 7}, { 11, 1, 7}, { 1, 8, 7}, { 1, 8, 7},
+ { 1, 9, 7}, { 1, 9, 7}, { 1,12, 8}, { 1,13, 8},
+ { 3, 3, 8}, { 5, 2, 8}, { 1,14, 8}, { 1,15, 8}
+};
+
+static const MBAtab MBA_5 [] = {
+ {6, 5}, {5, 5}, {4, 4}, {4, 4}, {3, 4}, {3, 4},
+ {2, 3}, {2, 3}, {2, 3}, {2, 3}, {1, 3}, {1, 3}, {1, 3}, {1, 3},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}
+};
+
+static const MBAtab MBA_11 [] = {
+ {32, 11}, {31, 11}, {30, 11}, {29, 11},
+ {28, 11}, {27, 11}, {26, 11}, {25, 11},
+ {24, 11}, {23, 11}, {22, 11}, {21, 11},
+ {20, 10}, {20, 10}, {19, 10}, {19, 10},
+ {18, 10}, {18, 10}, {17, 10}, {17, 10},
+ {16, 10}, {16, 10}, {15, 10}, {15, 10},
+ {14, 8}, {14, 8}, {14, 8}, {14, 8},
+ {14, 8}, {14, 8}, {14, 8}, {14, 8},
+ {13, 8}, {13, 8}, {13, 8}, {13, 8},
+ {13, 8}, {13, 8}, {13, 8}, {13, 8},
+ {12, 8}, {12, 8}, {12, 8}, {12, 8},
+ {12, 8}, {12, 8}, {12, 8}, {12, 8},
+ {11, 8}, {11, 8}, {11, 8}, {11, 8},
+ {11, 8}, {11, 8}, {11, 8}, {11, 8},
+ {10, 8}, {10, 8}, {10, 8}, {10, 8},
+ {10, 8}, {10, 8}, {10, 8}, {10, 8},
+ { 9, 8}, { 9, 8}, { 9, 8}, { 9, 8},
+ { 9, 8}, { 9, 8}, { 9, 8}, { 9, 8},
+ { 8, 7}, { 8, 7}, { 8, 7}, { 8, 7},
+ { 8, 7}, { 8, 7}, { 8, 7}, { 8, 7},
+ { 8, 7}, { 8, 7}, { 8, 7}, { 8, 7},
+ { 8, 7}, { 8, 7}, { 8, 7}, { 8, 7},
+ { 7, 7}, { 7, 7}, { 7, 7}, { 7, 7},
+ { 7, 7}, { 7, 7}, { 7, 7}, { 7, 7},
+ { 7, 7}, { 7, 7}, { 7, 7}, { 7, 7},
+ { 7, 7}, { 7, 7}, { 7, 7}, { 7, 7}
+};
+
+/* original (non-patched) scan tables */
+static const uint8_t mpeg2_scan_norm_orig[64] =
+{
+ /* Zig-Zag scan pattern */
+ 0, 1, 8,16, 9, 2, 3,10,
+ 17,24,32,25,18,11, 4, 5,
+ 12,19,26,33,40,48,41,34,
+ 27,20,13, 6, 7,14,21,28,
+ 35,42,49,56,57,50,43,36,
+ 29,22,15,23,30,37,44,51,
+ 58,59,52,45,38,31,39,46,
+ 53,60,61,54,47,55,62,63
+};
+
+static const uint8_t mpeg2_scan_alt_orig[64] =
+{
+ /* Alternate scan pattern */
+ 0,8,16,24,1,9,2,10,17,25,32,40,48,56,57,49,
+ 41,33,26,18,3,11,4,12,19,27,34,42,50,58,35,43,
+ 51,59,20,28,5,13,6,14,21,29,36,44,52,60,37,45,
+ 53,61,22,30,7,15,23,31,38,46,54,62,39,47,55,63
+};
+
+static uint8_t mpeg2_scan_alt_ptable[64];
+static uint8_t mpeg2_scan_norm_ptable[64];
+static uint8_t mpeg2_scan_orig_ptable[64];
+
+static inline void
+setup_scan_ptable( void )
+{
+ int i;
+ for (i=0; i<64; ++i) {
+ mpeg2_scan_norm_ptable[mpeg2_scan_norm_orig[i]] = mpeg2_scan_norm_orig[i];
+ mpeg2_scan_alt_ptable[mpeg2_scan_alt_orig[i]] = mpeg2_scan_alt_orig[i];
+ mpeg2_scan_orig_ptable[i] = i;
+ }
+}
+
+static const int non_linear_quantizer_scale[] = {
+ 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 10, 12, 14, 16, 18, 20, 22,
+ 24, 28, 32, 36, 40, 44, 48, 52,
+ 56, 64, 72, 80, 88, 96, 104, 112
+};
+
+static inline int
+get_macroblock_modes(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture)
+{
+ int macroblock_modes;
+ const MBtab * tab;
+
+ switch (picture->picture_coding_type) {
+ case I_TYPE:
+
+ tab = MB_I + vl_vlc_ubits(&bs->vlc, 1);
+ vl_vlc_dumpbits(&bs->vlc, tab->len);
+ macroblock_modes = tab->modes;
+
+ if ((!(picture->frame_pred_frame_dct)) && (picture->picture_structure == FRAME_PICTURE)) {
+ macroblock_modes |= vl_vlc_ubits(&bs->vlc, 1) * DCT_TYPE_INTERLACED;
+ vl_vlc_dumpbits(&bs->vlc, 1);
+ }
+
+ return macroblock_modes;
+
+ case P_TYPE:
+
+ tab = MB_P + vl_vlc_ubits(&bs->vlc, 5);
+ vl_vlc_dumpbits(&bs->vlc, tab->len);
+ macroblock_modes = tab->modes;
+
+ if (picture->picture_structure != FRAME_PICTURE) {
+ if (macroblock_modes & MACROBLOCK_MOTION_FORWARD) {
+ macroblock_modes |= vl_vlc_ubits(&bs->vlc, 2) * MOTION_TYPE_BASE;
+ vl_vlc_dumpbits(&bs->vlc, 2);
+ }
+ return macroblock_modes;
+ } else if (picture->frame_pred_frame_dct) {
+ if (macroblock_modes & MACROBLOCK_MOTION_FORWARD)
+ macroblock_modes |= MC_FRAME;
+ return macroblock_modes;
+ } else {
+ if (macroblock_modes & MACROBLOCK_MOTION_FORWARD) {
+ macroblock_modes |= vl_vlc_ubits(&bs->vlc, 2) * MOTION_TYPE_BASE;
+ vl_vlc_dumpbits(&bs->vlc, 2);
+ }
+ if (macroblock_modes & (MACROBLOCK_INTRA | MACROBLOCK_PATTERN)) {
+ macroblock_modes |= vl_vlc_ubits(&bs->vlc, 1) * DCT_TYPE_INTERLACED;
+ vl_vlc_dumpbits(&bs->vlc, 1);
+ }
+ return macroblock_modes;
+ }
+
+ case B_TYPE:
+
+ tab = MB_B + vl_vlc_ubits(&bs->vlc, 6);
+ vl_vlc_dumpbits(&bs->vlc, tab->len);
+ macroblock_modes = tab->modes;
+
+ if (picture->picture_structure != FRAME_PICTURE) {
+ if (! (macroblock_modes & MACROBLOCK_INTRA)) {
+ macroblock_modes |= vl_vlc_ubits(&bs->vlc, 2) * MOTION_TYPE_BASE;
+ vl_vlc_dumpbits(&bs->vlc, 2);
+ }
+ return macroblock_modes;
+ } else if (picture->frame_pred_frame_dct) {
+ /* if (! (macroblock_modes & MACROBLOCK_INTRA)) */
+ macroblock_modes |= MC_FRAME;
+ return macroblock_modes;
+ } else {
+ if (macroblock_modes & MACROBLOCK_INTRA)
+ goto intra;
+ macroblock_modes |= vl_vlc_ubits(&bs->vlc, 2) * MOTION_TYPE_BASE;
+ vl_vlc_dumpbits(&bs->vlc, 2);
+ if (macroblock_modes & (MACROBLOCK_INTRA | MACROBLOCK_PATTERN)) {
+ intra:
+ macroblock_modes |= vl_vlc_ubits(&bs->vlc, 1) * DCT_TYPE_INTERLACED;
+ vl_vlc_dumpbits(&bs->vlc, 1);
+ }
+ return macroblock_modes;
+ }
+
+ case D_TYPE:
+
+ vl_vlc_dumpbits(&bs->vlc, 1);
+ return MACROBLOCK_INTRA;
+
+ default:
+ return 0;
+ }
+}
+
+static inline int
+get_quantizer_scale(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture)
+{
+ int quantizer_scale_code;
+
+ quantizer_scale_code = vl_vlc_ubits(&bs->vlc, 5);
+ vl_vlc_dumpbits(&bs->vlc, 5);
+
+ if (picture->q_scale_type)
+ return non_linear_quantizer_scale[quantizer_scale_code];
+ else
+ return quantizer_scale_code << 1;
+}
+
+static inline int
+get_motion_delta(struct vl_mpg12_bs *bs, unsigned f_code)
+{
+ int delta;
+ int sign;
+ const MVtab * tab;
+
+ if (bs->vlc.buf & 0x80000000) {
+ vl_vlc_dumpbits(&bs->vlc, 1);
+ return 0;
+ } else if (bs->vlc.buf >= 0x0c000000) {
+
+ tab = MV_4 + vl_vlc_ubits(&bs->vlc, 4);
+ delta = (tab->delta << f_code) + 1;
+ bs->vlc.bits += tab->len + f_code + 1;
+ bs->vlc.buf <<= tab->len;
+
+ sign = vl_vlc_sbits(&bs->vlc, 1);
+ bs->vlc.buf <<= 1;
+
+ if (f_code)
+ delta += vl_vlc_ubits(&bs->vlc, f_code);
+ bs->vlc.buf <<= f_code;
+
+ return (delta ^ sign) - sign;
+
+ } else {
+
+ tab = MV_10 + vl_vlc_ubits(&bs->vlc, 10);
+ delta = (tab->delta << f_code) + 1;
+ bs->vlc.bits += tab->len + 1;
+ bs->vlc.buf <<= tab->len;
+
+ sign = vl_vlc_sbits(&bs->vlc, 1);
+ bs->vlc.buf <<= 1;
+
+ if (f_code) {
+ vl_vlc_needbits(&bs->vlc);
+ delta += vl_vlc_ubits(&bs->vlc, f_code);
+ vl_vlc_dumpbits(&bs->vlc, f_code);
+ }
+
+ return (delta ^ sign) - sign;
+ }
+}
+
+static inline int
+bound_motion_vector(int vec, unsigned f_code)
+{
+#if 1
+ unsigned int limit;
+ int sign;
+
+ limit = 16 << f_code;
+
+ if ((unsigned int)(vec + limit) < 2 * limit)
+ return vec;
+ else {
+ sign = ((int32_t)vec) >> 31;
+ return vec - ((2 * limit) ^ sign) + sign;
+ }
+#else
+ return ((int32_t)vec << (28 - f_code)) >> (28 - f_code);
+#endif
+}
+
+static inline int
+get_dmv(struct vl_mpg12_bs *bs)
+{
+ const DMVtab * tab;
+
+ tab = DMV_2 + vl_vlc_ubits(&bs->vlc, 2);
+ vl_vlc_dumpbits(&bs->vlc, tab->len);
+ return tab->dmv;
+}
+
+static inline int
+get_coded_block_pattern(struct vl_mpg12_bs *bs)
+{
+ const CBPtab * tab;
+
+ vl_vlc_needbits(&bs->vlc);
+
+ if (bs->vlc.buf >= 0x20000000) {
+
+ tab = CBP_7 + (vl_vlc_ubits(&bs->vlc, 7) - 16);
+ vl_vlc_dumpbits(&bs->vlc, tab->len);
+ return tab->cbp;
+
+ } else {
+
+ tab = CBP_9 + vl_vlc_ubits(&bs->vlc, 9);
+ vl_vlc_dumpbits(&bs->vlc, tab->len);
+ return tab->cbp;
+ }
+}
+
+static inline int
+get_luma_dc_dct_diff(struct vl_mpg12_bs *bs)
+{
+ const DCtab * tab;
+ int size;
+ int dc_diff;
+
+ if (bs->vlc.buf < 0xf8000000) {
+ tab = DC_lum_5 + vl_vlc_ubits(&bs->vlc, 5);
+ size = tab->size;
+ if (size) {
+ bs->vlc.bits += tab->len + size;
+ bs->vlc.buf <<= tab->len;
+ dc_diff = vl_vlc_ubits(&bs->vlc, size) - UBITS (SBITS (~bs->vlc.buf, 1), size);
+ bs->vlc.buf <<= size;
+ return dc_diff;
+ } else {
+ vl_vlc_dumpbits(&bs->vlc, 3);
+ return 0;
+ }
+ } else {
+ tab = DC_long + (vl_vlc_ubits(&bs->vlc, 9) - 0x1e0);
+ size = tab->size;
+ vl_vlc_dumpbits(&bs->vlc, tab->len);
+ vl_vlc_needbits(&bs->vlc);
+ dc_diff = vl_vlc_ubits(&bs->vlc, size) - UBITS (SBITS (~bs->vlc.buf, 1), size);
+ vl_vlc_dumpbits(&bs->vlc, size);
+ return dc_diff;
+ }
+}
+
+static inline int
+get_chroma_dc_dct_diff(struct vl_mpg12_bs *bs)
+{
+ const DCtab * tab;
+ int size;
+ int dc_diff;
+
+ if (bs->vlc.buf < 0xf8000000) {
+ tab = DC_chrom_5 + vl_vlc_ubits(&bs->vlc, 5);
+ size = tab->size;
+ if (size) {
+ bs->vlc.bits += tab->len + size;
+ bs->vlc.buf <<= tab->len;
+ dc_diff = vl_vlc_ubits(&bs->vlc, size) - UBITS (SBITS (~bs->vlc.buf, 1), size);
+ bs->vlc.buf <<= size;
+ return dc_diff;
+ } else {
+ vl_vlc_dumpbits(&bs->vlc, 2);
+ return 0;
+ }
+ } else {
+ tab = DC_long + (vl_vlc_ubits(&bs->vlc, 10) - 0x3e0);
+ size = tab->size;
+ vl_vlc_dumpbits(&bs->vlc, tab->len + 1);
+ vl_vlc_needbits(&bs->vlc);
+ dc_diff = vl_vlc_ubits(&bs->vlc, size) - UBITS (SBITS (~bs->vlc.buf, 1), size);
+ vl_vlc_dumpbits(&bs->vlc, size);
+ return dc_diff;
+ }
+}
+
+static inline void
+get_intra_block_B14(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture, short *dest)
+{
+ int i, j, l, val;
+ const uint8_t *scan;
+ uint8_t *scan_ptable;
+ uint8_t *quant_matrix = picture->intra_quantizer_matrix;
+ int quantizer_scale = picture->quantizer_scale;
+ int mismatch;
+ const DCTtab *tab;
+
+ if (!picture->alternate_scan) {
+ scan = mpeg2_scan_norm_orig;
+ scan_ptable = mpeg2_scan_norm_ptable;
+ } else {
+ scan = mpeg2_scan_alt_orig;
+ scan_ptable = mpeg2_scan_alt_ptable;
+ }
+
+ i = 0;
+ mismatch = ~dest[0];
+
+ vl_vlc_needbits(&bs->vlc);
+
+ while (1) {
+ if (bs->vlc.buf >= 0x28000000) {
+
+ tab = DCT_B14AC_5 + (vl_vlc_ubits(&bs->vlc, 5) - 5);
+
+ i += tab->run;
+ if (i >= 64)
+ break; /* end of block */
+
+ normal_code:
+ l = scan_ptable[j = scan[i]];
+
+ bs->vlc.buf <<= tab->len;
+ bs->vlc.bits += tab->len + 1;
+ val = (tab->level * quantizer_scale * quant_matrix[l]) >> 4;
+
+ /* if (bitstream_get (1)) val = -val; */
+ val = (val ^ vl_vlc_sbits(&bs->vlc, 1)) - vl_vlc_sbits(&bs->vlc, 1);
+
+ SATURATE (val);
+ dest[j] = val;
+ mismatch ^= val;
+
+ bs->vlc.buf <<= 1;
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ } else if (bs->vlc.buf >= 0x04000000) {
+
+ tab = DCT_B14_8 + (vl_vlc_ubits(&bs->vlc, 8) - 4);
+
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+
+ /* escape code */
+
+ i += UBITS(bs->vlc.buf << 6, 6) - 64;
+ if (i >= 64)
+ break; /* illegal, check needed to avoid buffer overflow */
+
+ l = scan_ptable[j = scan[i]];
+
+ vl_vlc_dumpbits(&bs->vlc, 12);
+ vl_vlc_needbits(&bs->vlc);
+ val = (vl_vlc_sbits(&bs->vlc, 12) * quantizer_scale * quant_matrix[l]) / 16;
+
+ SATURATE (val);
+ dest[j] = val;
+ mismatch ^= val;
+
+ vl_vlc_dumpbits(&bs->vlc, 12);
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ } else if (bs->vlc.buf >= 0x02000000) {
+ tab = DCT_B14_10 + (vl_vlc_ubits(&bs->vlc, 10) - 8);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00800000) {
+ tab = DCT_13 + (vl_vlc_ubits(&bs->vlc, 13) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00200000) {
+ tab = DCT_15 + (vl_vlc_ubits(&bs->vlc, 15) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else {
+ tab = DCT_16 + vl_vlc_ubits(&bs->vlc, 16);
+ bs->vlc.buf <<= 16;
+ vl_vlc_getword(&bs->vlc, bs->vlc.bits + 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ }
+ break; /* illegal, check needed to avoid buffer overflow */
+ }
+
+ dest[63] ^= mismatch & 1;
+ vl_vlc_dumpbits(&bs->vlc, 2); /* dump end of block code */
+}
+
+static inline void
+get_intra_block_B15(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture, short *dest)
+{
+ int i, j, l, val;
+ const uint8_t *scan;
+ uint8_t *scan_ptable;
+ uint8_t *quant_matrix = picture->intra_quantizer_matrix;
+ int quantizer_scale = picture->quantizer_scale;
+ int mismatch;
+ const DCTtab * tab;
+
+ if (!picture->alternate_scan) {
+ scan = mpeg2_scan_norm_orig;
+ scan_ptable = mpeg2_scan_norm_ptable;
+ } else {
+ scan = mpeg2_scan_alt_orig;
+ scan_ptable = mpeg2_scan_alt_ptable;
+ }
+
+ i = 0;
+ mismatch = ~dest[0];
+
+ vl_vlc_needbits(&bs->vlc);
+
+ while (1) {
+ if (bs->vlc.buf >= 0x04000000) {
+
+ tab = DCT_B15_8 + (vl_vlc_ubits(&bs->vlc, 8) - 4);
+
+ i += tab->run;
+ if (i < 64) {
+
+ normal_code:
+ l = scan_ptable[j = scan[i]];
+ bs->vlc.buf <<= tab->len;
+ bs->vlc.bits += tab->len + 1;
+ val = (tab->level * quantizer_scale * quant_matrix[l]) >> 4;
+
+ /* if (bitstream_get (1)) val = -val; */
+ val = (val ^ vl_vlc_sbits(&bs->vlc, 1)) - vl_vlc_sbits(&bs->vlc, 1);
+
+ SATURATE (val);
+ dest[j] = val;
+ mismatch ^= val;
+
+ bs->vlc.buf <<= 1;
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ } else {
+
+ /* end of block. I commented out this code because if we */
+ /* dont exit here we will still exit at the later test :) */
+
+ /* if (i >= 128) break; */ /* end of block */
+
+ /* escape code */
+
+ i += UBITS(bs->vlc.buf << 6, 6) - 64;
+ if (i >= 64)
+ break; /* illegal, check against buffer overflow */
+
+ l = scan_ptable[j = scan[i]];
+
+ vl_vlc_dumpbits(&bs->vlc, 12);
+ vl_vlc_needbits(&bs->vlc);
+ val = (vl_vlc_sbits(&bs->vlc, 12) * quantizer_scale * quant_matrix[l]) / 16;
+
+ SATURATE (val);
+ dest[j] = val;
+ mismatch ^= val;
+
+ vl_vlc_dumpbits(&bs->vlc, 12);
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ }
+ } else if (bs->vlc.buf >= 0x02000000) {
+ tab = DCT_B15_10 + (vl_vlc_ubits(&bs->vlc, 10) - 8);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00800000) {
+ tab = DCT_13 + (vl_vlc_ubits(&bs->vlc, 13) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00200000) {
+ tab = DCT_15 + (vl_vlc_ubits(&bs->vlc, 15) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else {
+ tab = DCT_16 + vl_vlc_ubits(&bs->vlc, 16);
+ bs->vlc.buf <<= 16;
+ vl_vlc_getword(&bs->vlc, bs->vlc.bits + 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ }
+ break; /* illegal, check needed to avoid buffer overflow */
+ }
+
+ dest[63] ^= mismatch & 1;
+ vl_vlc_dumpbits(&bs->vlc, 4); /* dump end of block code */
+}
+
+static inline void
+get_non_intra_block(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture, short *dest)
+{
+ int i, j, l, val;
+ const uint8_t *scan;
+ uint8_t *scan_ptable;
+ uint8_t *quant_matrix = picture->non_intra_quantizer_matrix;
+ int quantizer_scale = picture->quantizer_scale;
+ int mismatch;
+ const DCTtab *tab;
+
+ i = -1;
+ mismatch = 1;
+
+ if (!picture->alternate_scan) {
+ scan = mpeg2_scan_norm_orig;
+ scan_ptable = mpeg2_scan_norm_ptable;
+ } else {
+ scan = mpeg2_scan_alt_orig;
+ scan_ptable = mpeg2_scan_alt_ptable;
+ }
+
+ vl_vlc_needbits(&bs->vlc);
+ if (bs->vlc.buf >= 0x28000000) {
+ tab = DCT_B14DC_5 + (vl_vlc_ubits(&bs->vlc, 5) - 5);
+ goto entry_1;
+ } else
+ goto entry_2;
+
+ while (1) {
+ if (bs->vlc.buf >= 0x28000000) {
+
+ tab = DCT_B14AC_5 + (vl_vlc_ubits(&bs->vlc, 5) - 5);
+
+ entry_1:
+ i += tab->run;
+ if (i >= 64)
+ break; /* end of block */
+
+ normal_code:
+ l = scan_ptable[j = scan[i]];
+ bs->vlc.buf <<= tab->len;
+ bs->vlc.bits += tab->len + 1;
+ val = ((2*tab->level+1) * quantizer_scale * quant_matrix[l]) >> 5;
+
+ /* if (bitstream_get (1)) val = -val; */
+ val = (val ^ vl_vlc_sbits(&bs->vlc, 1)) - vl_vlc_sbits(&bs->vlc, 1);
+
+ SATURATE (val);
+ dest[j] = val;
+ mismatch ^= val;
+
+ bs->vlc.buf <<= 1;
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ }
+
+ entry_2:
+ if (bs->vlc.buf >= 0x04000000) {
+
+ tab = DCT_B14_8 + (vl_vlc_ubits(&bs->vlc, 8) - 4);
+
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+
+ /* escape code */
+
+ i += UBITS(bs->vlc.buf << 6, 6) - 64;
+ if (i >= 64)
+ break; /* illegal, check needed to avoid buffer overflow */
+
+ l = scan_ptable[j = scan[i]];
+
+ vl_vlc_dumpbits(&bs->vlc, 12);
+ vl_vlc_needbits(&bs->vlc);
+ val = 2 * (vl_vlc_sbits(&bs->vlc, 12) + vl_vlc_sbits(&bs->vlc, 1)) + 1;
+ val = (val * quantizer_scale * quant_matrix[l]) / 32;
+
+ SATURATE (val);
+ dest[j] = val;
+ mismatch ^= val;
+
+ vl_vlc_dumpbits(&bs->vlc, 12);
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ } else if (bs->vlc.buf >= 0x02000000) {
+ tab = DCT_B14_10 + (vl_vlc_ubits(&bs->vlc, 10) - 8);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00800000) {
+ tab = DCT_13 + (vl_vlc_ubits(&bs->vlc, 13) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00200000) {
+ tab = DCT_15 + (vl_vlc_ubits(&bs->vlc, 15) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else {
+ tab = DCT_16 + vl_vlc_ubits(&bs->vlc, 16);
+ bs->vlc.buf <<= 16;
+ vl_vlc_getword(&bs->vlc, bs->vlc.bits + 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ }
+ break; /* illegal, check needed to avoid buffer overflow */
+ }
+ dest[63] ^= mismatch & 1;
+ vl_vlc_dumpbits(&bs->vlc, 2); /* dump end of block code */
+}
+
+static inline void
+get_mpeg1_intra_block(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture, short *dest)
+{
+ int i, j, l, val;
+ const uint8_t *scan;
+ uint8_t *scan_ptable;
+ uint8_t *quant_matrix = picture->intra_quantizer_matrix;
+ int quantizer_scale = picture->quantizer_scale;
+ const DCTtab * tab;
+
+ i = 0;
+
+ if (!picture->alternate_scan) {
+ scan = mpeg2_scan_norm_orig;
+ scan_ptable = mpeg2_scan_norm_ptable;
+ } else {
+ scan = mpeg2_scan_alt_orig;
+ scan_ptable = mpeg2_scan_alt_ptable;
+ }
+
+ vl_vlc_needbits(&bs->vlc);
+
+ while (1) {
+ if (bs->vlc.buf >= 0x28000000) {
+
+ tab = DCT_B14AC_5 + (vl_vlc_ubits(&bs->vlc, 5) - 5);
+
+ i += tab->run;
+ if (i >= 64)
+ break; /* end of block */
+
+ normal_code:
+ l = scan_ptable[j = scan[i]];
+ bs->vlc.buf <<= tab->len;
+ bs->vlc.bits += tab->len + 1;
+ val = (tab->level * quantizer_scale * quant_matrix[l]) >> 4;
+
+ /* oddification */
+ val = (val - 1) | 1;
+
+ /* if (bitstream_get (1)) val = -val; */
+ val = (val ^ vl_vlc_sbits(&bs->vlc, 1)) - vl_vlc_sbits(&bs->vlc, 1);
+
+ SATURATE (val);
+ dest[j] = val;
+
+ bs->vlc.buf <<= 1;
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ } else if (bs->vlc.buf >= 0x04000000) {
+
+ tab = DCT_B14_8 + (vl_vlc_ubits(&bs->vlc, 8) - 4);
+
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+
+ /* escape code */
+
+ i += UBITS(bs->vlc.buf << 6, 6) - 64;
+ if (i >= 64)
+ break; /* illegal, check needed to avoid buffer overflow */
+
+ l = scan_ptable[j = scan[i]];
+
+ vl_vlc_dumpbits(&bs->vlc, 12);
+ vl_vlc_needbits(&bs->vlc);
+ val = vl_vlc_sbits(&bs->vlc, 8);
+ if (! (val & 0x7f)) {
+ vl_vlc_dumpbits(&bs->vlc, 8);
+ val = vl_vlc_ubits(&bs->vlc, 8) + 2 * val;
+ }
+ val = (val * quantizer_scale * quant_matrix[l]) / 16;
+
+ /* oddification */
+ val = (val + ~SBITS (val, 1)) | 1;
+
+ SATURATE (val);
+ dest[j] = val;
+
+ vl_vlc_dumpbits(&bs->vlc, 8);
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ } else if (bs->vlc.buf >= 0x02000000) {
+ tab = DCT_B14_10 + (vl_vlc_ubits(&bs->vlc, 10) - 8);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00800000) {
+ tab = DCT_13 + (vl_vlc_ubits(&bs->vlc, 13) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00200000) {
+ tab = DCT_15 + (vl_vlc_ubits(&bs->vlc, 15) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else {
+ tab = DCT_16 + vl_vlc_ubits(&bs->vlc, 16);
+ bs->vlc.buf <<= 16;
+ vl_vlc_getword(&bs->vlc, bs->vlc.bits + 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ }
+ break; /* illegal, check needed to avoid buffer overflow */
+ }
+ vl_vlc_dumpbits(&bs->vlc, 2); /* dump end of block code */
+}
+
+static inline void
+get_mpeg1_non_intra_block(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture, short *dest)
+{
+ int i, j, l, val;
+ const uint8_t * scan;
+ uint8_t *scan_ptable;
+ uint8_t *quant_matrix = picture->non_intra_quantizer_matrix;
+ int quantizer_scale = picture->quantizer_scale;
+ const DCTtab * tab;
+
+ i = -1;
+
+ if (!picture->alternate_scan) {
+ scan = mpeg2_scan_norm_orig;
+ scan_ptable = mpeg2_scan_norm_ptable;
+ } else {
+ scan = mpeg2_scan_alt_orig;
+ scan_ptable = mpeg2_scan_alt_ptable;
+ }
+
+ vl_vlc_needbits(&bs->vlc);
+ if (bs->vlc.buf >= 0x28000000) {
+ tab = DCT_B14DC_5 + (vl_vlc_ubits(&bs->vlc, 5) - 5);
+ goto entry_1;
+ } else
+ goto entry_2;
+
+ while (1) {
+ if (bs->vlc.buf >= 0x28000000) {
+
+ tab = DCT_B14AC_5 + (vl_vlc_ubits(&bs->vlc, 5) - 5);
+
+ entry_1:
+ i += tab->run;
+ if (i >= 64)
+ break; /* end of block */
+
+ normal_code:
+ l = scan_ptable[j = scan[i]];
+ bs->vlc.buf <<= tab->len;
+ bs->vlc.bits += tab->len + 1;
+ val = ((2*tab->level+1) * quantizer_scale * quant_matrix[l]) >> 5;
+
+ /* oddification */
+ val = (val - 1) | 1;
+
+ /* if (bitstream_get (1)) val = -val; */
+ val = (val ^ vl_vlc_sbits(&bs->vlc, 1)) - vl_vlc_sbits(&bs->vlc, 1);
+
+ SATURATE (val);
+ dest[j] = val;
+
+ bs->vlc.buf <<= 1;
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ }
+
+ entry_2:
+ if (bs->vlc.buf >= 0x04000000) {
+
+ tab = DCT_B14_8 + (vl_vlc_ubits(&bs->vlc, 8) - 4);
+
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+
+ /* escape code */
+
+ i += UBITS(bs->vlc.buf << 6, 6) - 64;
+ if (i >= 64)
+ break; /* illegal, check needed to avoid buffer overflow */
+
+ l = scan_ptable[j = scan[i]];
+
+ vl_vlc_dumpbits(&bs->vlc, 12);
+ vl_vlc_needbits(&bs->vlc);
+ val = vl_vlc_sbits(&bs->vlc, 8);
+ if (! (val & 0x7f)) {
+ vl_vlc_dumpbits(&bs->vlc, 8);
+ val = vl_vlc_ubits(&bs->vlc, 8) + 2 * val;
+ }
+ val = 2 * (val + SBITS (val, 1)) + 1;
+ val = (val * quantizer_scale * quant_matrix[l]) / 32;
+
+ /* oddification */
+ val = (val + ~SBITS (val, 1)) | 1;
+
+ SATURATE (val);
+ dest[j] = val;
+
+ vl_vlc_dumpbits(&bs->vlc, 8);
+ vl_vlc_needbits(&bs->vlc);
+
+ continue;
+
+ } else if (bs->vlc.buf >= 0x02000000) {
+ tab = DCT_B14_10 + (vl_vlc_ubits(&bs->vlc, 10) - 8);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00800000) {
+ tab = DCT_13 + (vl_vlc_ubits(&bs->vlc, 13) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else if (bs->vlc.buf >= 0x00200000) {
+ tab = DCT_15 + (vl_vlc_ubits(&bs->vlc, 15) - 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ } else {
+ tab = DCT_16 + vl_vlc_ubits(&bs->vlc, 16);
+ bs->vlc.buf <<= 16;
+ vl_vlc_getword(&bs->vlc, bs->vlc.bits + 16);
+ i += tab->run;
+ if (i < 64)
+ goto normal_code;
+ }
+ break; /* illegal, check needed to avoid buffer overflow */
+ }
+ vl_vlc_dumpbits(&bs->vlc, 2); /* dump end of block code */
+}
+
+static inline void
+slice_intra_DCT(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture, int cc,
+ unsigned x, unsigned y, enum pipe_mpeg12_dct_type coding)
+{
+ short *dest = bs->ycbcr_buffer[cc];
+
+ bs->ycbcr_stream[cc]->x = x;
+ bs->ycbcr_stream[cc]->y = y;
+ bs->ycbcr_stream[cc]->intra = PIPE_MPEG12_DCT_INTRA;
+ bs->ycbcr_stream[cc]->coding = coding;
+
+ vl_vlc_needbits(&bs->vlc);
+
+ /* Get the intra DC coefficient and inverse quantize it */
+ if (cc == 0)
+ picture->dc_dct_pred[0] += get_luma_dc_dct_diff(bs);
+ else
+ picture->dc_dct_pred[cc] += get_chroma_dc_dct_diff(bs);
+
+ memset(dest, 0, sizeof(int16_t) * 64);
+ dest[0] = picture->dc_dct_pred[cc] << (3 - picture->intra_dc_precision);
+ if (picture->mpeg1) {
+ if (picture->picture_coding_type != D_TYPE)
+ get_mpeg1_intra_block(bs, picture, dest);
+ } else if (picture->intra_vlc_format)
+ get_intra_block_B15(bs, picture, dest);
+ else
+ get_intra_block_B14(bs, picture, dest);
+
+ bs->num_ycbcr_blocks[cc]++;
+ bs->ycbcr_stream[cc]++;
+ bs->ycbcr_buffer[cc] += 64;
+}
+
+static inline void
+slice_non_intra_DCT(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture, int cc,
+ unsigned x, unsigned y, enum pipe_mpeg12_dct_type coding)
+{
+ short *dest = bs->ycbcr_buffer[cc];
+
+ bs->ycbcr_stream[cc]->x = x;
+ bs->ycbcr_stream[cc]->y = y;
+ bs->ycbcr_stream[cc]->intra = PIPE_MPEG12_DCT_DELTA;
+ bs->ycbcr_stream[cc]->coding = coding;
+
+ memset(dest, 0, sizeof(int16_t) * 64);
+ if (picture->mpeg1)
+ get_mpeg1_non_intra_block(bs, picture, dest);
+ else
+ get_non_intra_block(bs, picture, dest);
+
+ bs->num_ycbcr_blocks[cc]++;
+ bs->ycbcr_stream[cc]++;
+ bs->ycbcr_buffer[cc] += 64;
+}
+
+static inline void
+motion_mp1(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int motion_x, motion_y;
+
+ mv->top.field_select = mv->bottom.field_select = PIPE_VIDEO_FRAME;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_x = (mv->top.x + (get_motion_delta(bs, f_code[0]) << f_code[1]));
+ motion_x = bound_motion_vector (motion_x, f_code[0] + f_code[1]);
+ mv->top.x = mv->bottom.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = (mv->top.y + (get_motion_delta(bs, f_code[0]) << f_code[1]));
+ motion_y = bound_motion_vector (motion_y, f_code[0] + f_code[1]);
+ mv->top.y = mv->bottom.y = motion_y;
+}
+
+static inline void
+motion_fr_frame(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int motion_x, motion_y;
+
+ mv->top.field_select = mv->bottom.field_select = PIPE_VIDEO_FRAME;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_x = mv->top.x + get_motion_delta(bs, f_code[0]);
+ motion_x = bound_motion_vector(motion_x, f_code[0]);
+ mv->top.x = mv->bottom.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = mv->top.y + get_motion_delta(bs, f_code[1]);
+ motion_y = bound_motion_vector(motion_y, f_code[1]);
+ mv->top.y = mv->bottom.y = motion_y;
+}
+
+static inline void
+motion_fr_field(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int motion_x, motion_y;
+
+ vl_vlc_needbits(&bs->vlc);
+ mv->top.field_select = vl_vlc_ubits(&bs->vlc, 1) ?
+ PIPE_VIDEO_BOTTOM_FIELD : PIPE_VIDEO_TOP_FIELD;
+ vl_vlc_dumpbits(&bs->vlc, 1);
+
+ motion_x = mv->top.x + get_motion_delta(bs, f_code[0]);
+ motion_x = bound_motion_vector (motion_x, f_code[0]);
+ mv->top.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = (mv->top.y >> 1) + get_motion_delta(bs, f_code[1]);
+ /* motion_y = bound_motion_vector (motion_y, f_code[1]); */
+ mv->top.y = motion_y << 1;
+
+ vl_vlc_needbits(&bs->vlc);
+ mv->bottom.field_select = vl_vlc_ubits(&bs->vlc, 1) ?
+ PIPE_VIDEO_BOTTOM_FIELD : PIPE_VIDEO_TOP_FIELD;
+ vl_vlc_dumpbits(&bs->vlc, 1);
+
+ motion_x = mv->bottom.x + get_motion_delta(bs, f_code[0]);
+ motion_x = bound_motion_vector (motion_x, f_code[0]);
+ mv->bottom.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = (mv->bottom.y >> 1) + get_motion_delta(bs, f_code[1]);
+ /* motion_y = bound_motion_vector (motion_y, f_code[1]); */
+ mv->bottom.y = motion_y << 1;
+}
+
+static inline void
+motion_fr_dmv(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int motion_x, motion_y;
+
+ // TODO Implement dmv
+ mv->top.field_select = mv->bottom.field_select = PIPE_VIDEO_FRAME;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_x = mv->top.x + get_motion_delta(bs, f_code[0]);
+ motion_x = bound_motion_vector(motion_x, f_code[0]);
+ mv->top.x = mv->bottom.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = (mv->top.y >> 1) + get_motion_delta(bs, f_code[1]);
+ /* motion_y = bound_motion_vector (motion_y, f_code[1]); */
+ mv->top.y = mv->bottom.y = motion_y << 1;
+}
+
+/* like motion_frame, but parsing without actual motion compensation */
+static inline void
+motion_fr_conceal(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int tmp;
+
+ mv->top.field_select = mv->bottom.field_select = PIPE_VIDEO_FRAME;
+
+ vl_vlc_needbits(&bs->vlc);
+ tmp = (mv->top.x + get_motion_delta(bs, f_code[0]));
+ tmp = bound_motion_vector (tmp, f_code[0]);
+ mv->top.x = mv->bottom.x = tmp;
+
+ vl_vlc_needbits(&bs->vlc);
+ tmp = (mv->top.y + get_motion_delta(bs, f_code[1]));
+ tmp = bound_motion_vector (tmp, f_code[1]);
+ mv->top.y = mv->bottom.y = tmp;
+
+ vl_vlc_dumpbits(&bs->vlc, 1); /* remove marker_bit */
+}
+
+static inline void
+motion_fi_field(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int motion_x, motion_y;
+
+ vl_vlc_needbits(&bs->vlc);
+
+ // ref_field
+ //vl_vlc_ubits(&bs->vlc, 1);
+
+ // TODO field select may need to do something here for bob (weave ok)
+ mv->top.field_select = mv->bottom.field_select = PIPE_VIDEO_FRAME;
+ vl_vlc_dumpbits(&bs->vlc, 1);
+
+ motion_x = mv->top.x + get_motion_delta(bs, f_code[0]);
+ motion_x = bound_motion_vector (motion_x, f_code[0]);
+ mv->top.x = mv->bottom.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = mv->top.y + get_motion_delta(bs, f_code[1]);
+ motion_y = bound_motion_vector (motion_y, f_code[1]);
+ mv->top.y = mv->bottom.y = motion_y;
+}
+
+static inline void
+motion_fi_16x8(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int motion_x, motion_y;
+
+ vl_vlc_needbits(&bs->vlc);
+
+ // ref_field
+ //vl_vlc_ubits(&bs->vlc, 1);
+
+ // TODO field select may need to do something here bob (weave ok)
+ mv->top.field_select = PIPE_VIDEO_FRAME;
+ vl_vlc_dumpbits(&bs->vlc, 1);
+
+ motion_x = mv->top.x + get_motion_delta(bs, f_code[0]);
+ motion_x = bound_motion_vector (motion_x, f_code[0]);
+ mv->top.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = mv->top.y + get_motion_delta(bs, f_code[1]);
+ motion_y = bound_motion_vector (motion_y, f_code[1]);
+ mv->top.y = motion_y;
+
+ vl_vlc_needbits(&bs->vlc);
+ // ref_field
+ //vl_vlc_ubits(&bs->vlc, 1);
+
+ // TODO field select may need to do something here for bob (weave ok)
+ mv->bottom.field_select = PIPE_VIDEO_FRAME;
+ vl_vlc_dumpbits(&bs->vlc, 1);
+
+ motion_x = mv->bottom.x + get_motion_delta(bs, f_code[0]);
+ motion_x = bound_motion_vector (motion_x, f_code[0]);
+ mv->bottom.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = mv->bottom.y + get_motion_delta(bs, f_code[1]);
+ motion_y = bound_motion_vector (motion_y, f_code[1]);
+ mv->bottom.y = motion_y;
+}
+
+static inline void
+motion_fi_dmv(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int motion_x, motion_y;
+
+ // TODO field select may need to do something here for bob (weave ok)
+ mv->top.field_select = mv->bottom.field_select = PIPE_VIDEO_FRAME;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_x = mv->top.x + get_motion_delta(bs, f_code[0]);
+ motion_x = bound_motion_vector (motion_x, f_code[0]);
+ mv->top.x = mv->bottom.x = motion_x;
+
+ vl_vlc_needbits(&bs->vlc);
+ motion_y = mv->top.y + get_motion_delta(bs, f_code[1]);
+ motion_y = bound_motion_vector (motion_y, f_code[1]);
+ mv->top.y = mv->bottom.y = motion_y;
+}
+
+
+static inline void
+motion_fi_conceal(struct vl_mpg12_bs *bs, unsigned f_code[2], struct pipe_motionvector *mv)
+{
+ int tmp;
+
+ vl_vlc_needbits(&bs->vlc);
+ vl_vlc_dumpbits(&bs->vlc, 1); /* remove field_select */
+
+ tmp = (mv->top.x + get_motion_delta(bs, f_code[0]));
+ tmp = bound_motion_vector(tmp, f_code[0]);
+ mv->top.x = mv->bottom.x = tmp;
+
+ vl_vlc_needbits(&bs->vlc);
+ tmp = (mv->top.y + get_motion_delta(bs, f_code[1]));
+ tmp = bound_motion_vector(tmp, f_code[1]);
+ mv->top.y = mv->bottom.y = tmp;
+
+ vl_vlc_dumpbits(&bs->vlc, 1); /* remove marker_bit */
+}
+
+#define MOTION_CALL(routine, macroblock_modes) \
+do { \
+ if ((macroblock_modes) & MACROBLOCK_MOTION_FORWARD) \
+ routine(bs, picture->f_code[0], &mv_fwd); \
+ if ((macroblock_modes) & MACROBLOCK_MOTION_BACKWARD) \
+ routine(bs, picture->f_code[1], &mv_bwd); \
+} while (0)
+
+#define NEXT_MACROBLOCK \
+do { \
+ bs->mv_stream[0][x+y*bs->width/16] = mv_fwd; \
+ bs->mv_stream[1][x+y*bs->width/16] = mv_bwd; \
+ ++x; \
+ if (x == bs->width/16) { \
+ ++y; \
+ if (y >= bs->height/16) \
+ return false; \
+ x = 0; \
+ } \
+} while (0)
+
+static inline bool
+slice_init(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc * picture, int *x, int *y)
+{
+ const MBAtab * mba;
+
+ vl_vlc_need32bits(&bs->vlc);
+ while(bs->vlc.buf < 0x101 || bs->vlc.buf > 0x1AF) {
+ if(!vl_vlc_getbyte(&bs->vlc))
+ return false;
+ }
+ *y = ((bs->vlc.buf & 0xFF) - 1) * 16;
+ vl_vlc_restart(&bs->vlc);
+
+ //TODO conversion to signed format signed format
+ picture->dc_dct_pred[0] = picture->dc_dct_pred[1] = picture->dc_dct_pred[2] = 0;
+
+ picture->quantizer_scale = get_quantizer_scale(bs, picture);
+
+ /* ignore intra_slice and all the extra data */
+ while (bs->vlc.buf & 0x80000000) {
+ vl_vlc_dumpbits(&bs->vlc, 9);
+ vl_vlc_needbits(&bs->vlc);
+ }
+
+ /* decode initial macroblock address increment */
+ *x = 0;
+ while (1) {
+ if (bs->vlc.buf >= 0x08000000) {
+ mba = MBA_5 + (vl_vlc_ubits(&bs->vlc, 6) - 2);
+ break;
+ } else if (bs->vlc.buf >= 0x01800000) {
+ mba = MBA_11 + (vl_vlc_ubits(&bs->vlc, 12) - 24);
+ break;
+ } else switch (vl_vlc_ubits(&bs->vlc, 12)) {
+ case 8: /* macroblock_escape */
+ *x += 33;
+ vl_vlc_dumpbits(&bs->vlc, 11);
+ vl_vlc_needbits(&bs->vlc);
+ continue;
+ case 15: /* macroblock_stuffing (MPEG1 only) */
+ bs->vlc.buf &= 0xfffff;
+ vl_vlc_dumpbits(&bs->vlc, 11);
+ vl_vlc_needbits(&bs->vlc);
+ continue;
+ default: /* error */
+ return false;
+ }
+ }
+ vl_vlc_dumpbits(&bs->vlc, mba->len + 1);
+ *x = (*x + mba->mba) << 4;
+
+ while (*x >= bs->width) {
+ *x -= bs->width;
+ *y += 16;
+ }
+ if (*y > bs->height)
+ return false;
+
+ return true;
+}
+
+static inline bool
+decode_slice(struct vl_mpg12_bs *bs, struct pipe_mpeg12_picture_desc *picture)
+{
+ struct pipe_motionvector mv_fwd, mv_bwd;
+ enum pipe_mpeg12_dct_type dct_type;
+ int x, y;
+
+ if (!slice_init(bs, picture, &x, &y))
+ return false;
+
+ mv_fwd.top.x = mv_fwd.top.y = mv_fwd.bottom.x = mv_fwd.bottom.y = 0;
+ mv_fwd.top.field_select = mv_fwd.bottom.field_select = PIPE_VIDEO_FRAME;
+
+ mv_bwd.top.x = mv_bwd.top.y = mv_bwd.bottom.x = mv_bwd.bottom.y = 0;
+ mv_bwd.top.field_select = mv_bwd.bottom.field_select = PIPE_VIDEO_FRAME;
+
+ x /= 16;
+ y /= 16;
+
+ while (1) {
+ int macroblock_modes;
+ int mba_inc;
+ const MBAtab * mba;
+
+ vl_vlc_needbits(&bs->vlc);
+
+ macroblock_modes = get_macroblock_modes(bs, picture); //macroblock_modes()
+ dct_type = macroblock_modes & DCT_TYPE_INTERLACED ?
+ PIPE_MPEG12_DCT_TYPE_FIELD : PIPE_MPEG12_DCT_TYPE_FRAME;
+
+ switch(macroblock_modes & (MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD)) {
+ case (MACROBLOCK_MOTION_FORWARD|MACROBLOCK_MOTION_BACKWARD):
+ mv_fwd.top.weight = mv_fwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_HALF;
+ mv_bwd.top.weight = mv_bwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_HALF;
+ break;
+
+ default:
+ case MACROBLOCK_MOTION_FORWARD:
+ mv_fwd.top.weight = mv_fwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_MAX;
+ mv_bwd.top.weight = mv_bwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_MIN;
+ break;
+
+ case MACROBLOCK_MOTION_BACKWARD:
+ mv_fwd.top.weight = mv_fwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_MIN;
+ mv_bwd.top.weight = mv_bwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_MAX;
+ break;
+ }
+
+ /* maybe integrate MACROBLOCK_QUANT test into get_macroblock_modes ? */
+ if (macroblock_modes & MACROBLOCK_QUANT)
+ picture->quantizer_scale = get_quantizer_scale(bs, picture);
+
+ if (macroblock_modes & MACROBLOCK_INTRA) {
+
+ if (picture->concealment_motion_vectors) {
+ if (picture->picture_structure == FRAME_PICTURE)
+ motion_fr_conceal(bs, picture->f_code[0], &mv_fwd);
+ else
+ motion_fi_conceal(bs, picture->f_code[0], &mv_fwd);
+
+ } else {
+ mv_fwd.top.x = mv_fwd.top.y = mv_fwd.bottom.x = mv_fwd.bottom.y = 0;
+ mv_bwd.top.x = mv_bwd.top.y = mv_bwd.bottom.x = mv_bwd.bottom.y = 0;
+ }
+ mv_fwd.top.weight = mv_fwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_MIN;
+ mv_bwd.top.weight = mv_bwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_MIN;
+
+ // unravaled loop of 6 block(i) calls in macroblock()
+ slice_intra_DCT(bs, picture, 0, x*2+0, y*2+0, dct_type);
+ slice_intra_DCT(bs, picture, 0, x*2+1, y*2+0, dct_type);
+ slice_intra_DCT(bs, picture, 0, x*2+0, y*2+1, dct_type);
+ slice_intra_DCT(bs, picture, 0, x*2+1, y*2+1, dct_type);
+ slice_intra_DCT(bs, picture, 1, x, y, dct_type);
+ slice_intra_DCT(bs, picture, 2, x, y, dct_type);
+
+ if (picture->picture_coding_type == D_TYPE) {
+ vl_vlc_needbits(&bs->vlc);
+ vl_vlc_dumpbits(&bs->vlc, 1);
+ }
+
+ } else {
+ if (picture->picture_structure == FRAME_PICTURE)
+ switch (macroblock_modes & MOTION_TYPE_MASK) {
+ case MC_FRAME:
+ if (picture->mpeg1) {
+ MOTION_CALL(motion_mp1, macroblock_modes);
+ } else {
+ MOTION_CALL(motion_fr_frame, macroblock_modes);
+ }
+ break;
+
+ case MC_FIELD:
+ MOTION_CALL (motion_fr_field, macroblock_modes);
+ break;
+
+ case MC_DMV:
+ MOTION_CALL (motion_fr_dmv, MACROBLOCK_MOTION_FORWARD);
+ break;
+
+ case 0:
+ /* non-intra mb without forward mv in a P picture */
+ mv_fwd.top.x = mv_fwd.top.y = mv_fwd.bottom.x = mv_fwd.bottom.y = 0;
+ mv_bwd.top.x = mv_bwd.top.y = mv_bwd.bottom.x = mv_bwd.bottom.y = 0;
+ break;
+ }
+ else
+ switch (macroblock_modes & MOTION_TYPE_MASK) {
+ case MC_FIELD:
+ MOTION_CALL (motion_fi_field, macroblock_modes);
+ break;
+
+ case MC_16X8:
+ MOTION_CALL (motion_fi_16x8, macroblock_modes);
+ break;
+
+ case MC_DMV:
+ MOTION_CALL (motion_fi_dmv, MACROBLOCK_MOTION_FORWARD);
+ break;
+
+ case 0:
+ /* non-intra mb without forward mv in a P picture */
+ mv_fwd.top.x = mv_fwd.top.y = mv_fwd.bottom.x = mv_fwd.bottom.y = 0;
+ mv_bwd.top.x = mv_bwd.top.y = mv_bwd.bottom.x = mv_bwd.bottom.y = 0;
+ break;
+ }
+
+ if (macroblock_modes & MACROBLOCK_PATTERN) {
+ int coded_block_pattern = get_coded_block_pattern(bs);
+
+ // TODO optimize not fully used for idct accel only mc.
+ if (coded_block_pattern & 0x20)
+ slice_non_intra_DCT(bs, picture, 0, x*2+0, y*2+0, dct_type); // cc0 luma 0
+ if (coded_block_pattern & 0x10)
+ slice_non_intra_DCT(bs, picture, 0, x*2+1, y*2+0, dct_type); // cc0 luma 1
+ if (coded_block_pattern & 0x08)
+ slice_non_intra_DCT(bs, picture, 0, x*2+0, y*2+1, dct_type); // cc0 luma 2
+ if (coded_block_pattern & 0x04)
+ slice_non_intra_DCT(bs, picture, 0, x*2+1, y*2+1, dct_type); // cc0 luma 3
+ if (coded_block_pattern & 0x2)
+ slice_non_intra_DCT(bs, picture, 1, x, y, dct_type); // cc1 croma
+ if (coded_block_pattern & 0x1)
+ slice_non_intra_DCT(bs, picture, 2, x, y, dct_type); // cc2 croma
+ }
+
+ picture->dc_dct_pred[0] = picture->dc_dct_pred[1] = picture->dc_dct_pred[2] = 0;
+ }
+
+ NEXT_MACROBLOCK;
+
+ vl_vlc_needbits(&bs->vlc);
+ mba_inc = 0;
+ while (1) {
+ if (bs->vlc.buf >= 0x10000000) {
+ mba = MBA_5 + (vl_vlc_ubits(&bs->vlc, 5) - 2);
+ break;
+ } else if (bs->vlc.buf >= 0x03000000) {
+ mba = MBA_11 + (vl_vlc_ubits(&bs->vlc, 11) - 24);
+ break;
+ } else switch (vl_vlc_ubits(&bs->vlc, 11)) {
+ case 8: /* macroblock_escape */
+ mba_inc += 33;
+ /* pass through */
+ case 15: /* macroblock_stuffing (MPEG1 only) */
+ vl_vlc_dumpbits(&bs->vlc, 11);
+ vl_vlc_needbits(&bs->vlc);
+ continue;
+ default: /* end of slice, or error */
+ return true;
+ }
+ }
+ vl_vlc_dumpbits(&bs->vlc, mba->len);
+ mba_inc += mba->mba;
+ if (mba_inc) {
+ //TODO conversion to signed format signed format
+ picture->dc_dct_pred[0] = picture->dc_dct_pred[1] = picture->dc_dct_pred[2] = 0;
+
+ switch(picture->picture_structure) {
+ case FRAME_PICTURE:
+ mv_fwd.top.field_select = mv_fwd.bottom.field_select = PIPE_VIDEO_FRAME;
+ mv_bwd.top.field_select = mv_bwd.bottom.field_select = PIPE_VIDEO_FRAME;
+ break;
+
+ case TOP_FIELD:
+ mv_fwd.top.field_select = mv_fwd.bottom.field_select = PIPE_VIDEO_TOP_FIELD;
+ mv_bwd.top.field_select = mv_bwd.bottom.field_select = PIPE_VIDEO_TOP_FIELD;
+ break;
+
+ case BOTTOM_FIELD:
+ mv_fwd.top.field_select = mv_fwd.bottom.field_select = PIPE_VIDEO_BOTTOM_FIELD;
+ mv_bwd.top.field_select = mv_bwd.bottom.field_select = PIPE_VIDEO_BOTTOM_FIELD;
+ break;
+ }
+
+ if (picture->picture_coding_type == P_TYPE) {
+ mv_fwd.top.x = mv_fwd.top.y = mv_fwd.bottom.x = mv_fwd.bottom.y = 0;
+ mv_fwd.top.weight = mv_fwd.bottom.weight = PIPE_VIDEO_MV_WEIGHT_MAX;
+ }
+ do {
+ NEXT_MACROBLOCK;
+ } while (--mba_inc);
+ }
+ }
+}
+
+void
+vl_mpg12_bs_init(struct vl_mpg12_bs *bs, unsigned width, unsigned height)
+{
+ assert(bs);
+
+ memset(bs, 0, sizeof(struct vl_mpg12_bs));
+
+ bs->width = width;
+ bs->height = height;
+
+ setup_scan_ptable();
+}
+
+void
+vl_mpg12_bs_set_buffers(struct vl_mpg12_bs *bs, struct pipe_ycbcr_block *ycbcr_stream[VL_MAX_PLANES],
+ short *ycbcr_buffer[VL_MAX_PLANES], struct pipe_motionvector *mv_stream[VL_MAX_REF_FRAMES])
+{
+ unsigned i;
+
+ assert(bs);
+ assert(ycbcr_stream && ycbcr_buffer);
+ assert(mv_stream);
+
+ for (i = 0; i < VL_MAX_PLANES; ++i) {
+ bs->ycbcr_stream[i] = ycbcr_stream[i];
+ bs->ycbcr_buffer[i] = ycbcr_buffer[i];
+ }
+ for (i = 0; i < VL_MAX_REF_FRAMES; ++i)
+ bs->mv_stream[i] = mv_stream[i];
+
+ // TODO
+ for (i = 0; i < bs->width/16*bs->height/16; ++i) {
+ bs->mv_stream[0][i].top.x = bs->mv_stream[0][i].top.y = 0;
+ bs->mv_stream[0][i].top.field_select = PIPE_VIDEO_FRAME;
+ bs->mv_stream[0][i].top.weight = PIPE_VIDEO_MV_WEIGHT_MAX;
+ bs->mv_stream[0][i].bottom.x = bs->mv_stream[0][i].bottom.y = 0;
+ bs->mv_stream[0][i].bottom.field_select = PIPE_VIDEO_FRAME;
+ bs->mv_stream[0][i].bottom.weight = PIPE_VIDEO_MV_WEIGHT_MAX;
+
+ bs->mv_stream[1][i].top.x = bs->mv_stream[1][i].top.y = 0;
+ bs->mv_stream[1][i].top.field_select = PIPE_VIDEO_FRAME;
+ bs->mv_stream[1][i].top.weight = PIPE_VIDEO_MV_WEIGHT_MIN;
+ bs->mv_stream[1][i].bottom.x = bs->mv_stream[1][i].bottom.y = 0;
+ bs->mv_stream[1][i].bottom.field_select = PIPE_VIDEO_FRAME;
+ bs->mv_stream[1][i].bottom.weight = PIPE_VIDEO_MV_WEIGHT_MIN;
+ }
+}
+
+void
+vl_mpg12_bs_decode(struct vl_mpg12_bs *bs, unsigned num_bytes, const void *buffer,
+ struct pipe_mpeg12_picture_desc *picture, unsigned num_ycbcr_blocks[3])
+{
+ assert(bs);
+ assert(num_ycbcr_blocks);
+ assert(buffer && num_bytes);
+
+ bs->num_ycbcr_blocks = num_ycbcr_blocks;
+
+ vl_vlc_init(&bs->vlc, buffer, num_bytes);
+
+ while(decode_slice(bs, picture));
+}
projects / mesa.git / commitdiff