/* 2004.02.01 first released source code for IOMP */ /* * Copyright (C) 2002 the xine project * * This file is part of xine, a unix video player. * * xine 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. * * xine 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 * * $Id: svq1.c,v 1.2 2003/11/25 04:26:07 georgedon Exp $ */ #include #include #include #include #include "xine_internal.h" #include "video_out.h" #include "buffer.h" #include "bswap.h" #include "xineutils.h" #include "svq1_codebooks.h" #define VIDEOBUFSIZE 128 * 1024 #define MEDIAN(a,b,c) ((a < b != b >= c) ? b : ((a < c != c > b) ? c : a)) #define SVQ1_BLOCK_SKIP 0 #define SVQ1_BLOCK_INTER 1 #define SVQ1_BLOCK_INTER_4V 2 #define SVQ1_BLOCK_INTRA 3 #define SVQ1_FRAME_INTRA 0 #define SVQ1_FRAME_INTER 1 #define SVQ1_FRAME_DROPPABLE 2 /* memory bit stream */ typedef struct bit_buffer_s { uint8_t *buffer; unsigned int bitpos; unsigned int length; } bit_buffer_t; /* variable length (bit) code */ typedef struct vlc_code_s { int16_t value :10, length :6; } vlc_code_t; /* motion vector (prediction) */ typedef struct svq1_pmv_s { int x; int y; } svq1_pmv_t; typedef struct svq1_s { int frame_code; int frame_type; int frame_width; int frame_height; int luma_width; int luma_height; int chroma_width; int chroma_height; svq1_pmv_t *motion; uint8_t *current; uint8_t *previous; int offsets[3]; int reference_frame; uint8_t *base[3]; int width; int height; double ratio; } svq1_t; typedef struct { video_decoder_class_t decoder_class; } svq1_class_t; typedef struct svq1dec_decoder_s { video_decoder_t video_decoder; svq1_class_t *class; xine_stream_t *stream; int64_t video_step; int decoder_ok; unsigned char *buf; int bufsize; int size; svq1_t *svq1; } svq1dec_decoder_t; /* standard video sizes */ static struct { int width; int height; } frame_size_table[8] = { { 160, 120 }, { 128, 96 }, { 176, 144 }, { 352, 288 }, { 704, 576 }, { 240, 180 }, { 320, 240 }, { -1, -1 } }; /* block type, codes 000 .. 1xx */ static vlc_code_t block_type_table[8] = { { SVQ1_BLOCK_INTRA, 3 }, { SVQ1_BLOCK_INTER_4V, 3 }, { SVQ1_BLOCK_INTER, 2 }, { SVQ1_BLOCK_INTER, 2 }, { SVQ1_BLOCK_SKIP, 1 }, { SVQ1_BLOCK_SKIP, 1 }, { SVQ1_BLOCK_SKIP, 1 }, { SVQ1_BLOCK_SKIP, 1 } }; /* motion vector, codes 0000011 .. 011xxxx */ static vlc_code_t motion_table_0[61] = { { 7, 8 }, { 6, 8 }, { 5, 8 }, { 4, 7 }, { 4, 7 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 } }; /* motion vector, codes 000000000010 ... 0000010111xx */ static vlc_code_t motion_table_1[94] = { {32, 13}, {31, 13}, {30, 12}, {30, 12}, {29, 12}, {29, 12}, {28, 12}, {28, 12}, {27, 12}, {27, 12}, {26, 12}, {26, 12}, {25, 12}, {25, 12}, {24, 11}, {24, 11}, {24, 11}, {24, 11}, {23, 11}, {23, 11}, {23, 11}, {23, 11}, {22, 11}, {22, 11}, {22, 11}, {22, 11}, {21, 11}, {21, 11}, {21, 11}, {21, 11}, {20, 11}, {20, 11}, {20, 11}, {20, 11}, {19, 11}, {19, 11}, {19, 11}, {19, 11}, {18, 11}, {18, 11}, {18, 11}, {18, 11}, {17, 11}, {17, 11}, {17, 11}, {17, 11}, {16, 11}, {16, 11}, {16, 11}, {16, 11}, {15, 11}, {15, 11}, {15, 11}, {15, 11}, {14, 11}, {14, 11}, {14, 11}, {14, 11}, {13, 11}, {13, 11}, {13, 11}, {13, 11}, {12, 11}, {12, 11}, {12, 11}, {12, 11}, {11, 11}, {11, 11}, {11, 11}, {11, 11}, {10, 10}, {10, 10}, {10, 10}, {10, 10}, {10, 10}, {10, 10}, {10, 10}, {10, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 9, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, { 8, 10}, }; /* inter-coded vector codebook count tables, codes 000000 ... 111111 */ static vlc_code_t inter_vector_tables[6][64] = { /* 4x2 vector, codes 0000xxx ... 11xxxxx */ { { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 } }, /* 4x4 vector, codes 0000xxx ... 11xxxxx */ { { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 }, {-1, 2 } }, /* 8x4 vector, codes 00000xx ... 1xxxxxx */ { { 6, 5 }, { 6, 5 }, { 5, 5 }, { 5, 5 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 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 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 } }, /* 8x8 vector, codes 00000xx ... 1xxxxxx */ { { 6, 5 }, { 6, 5 }, { 5, 5 }, { 5, 5 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 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 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 } }, /* 16x8 vector, codes 00000xx ... 1xxxxxx */ { { 6, 5 }, { 6, 5 }, { 5, 5 }, { 5, 5 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 2, 4 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 3 }, { 0, 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 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 } }, /* 16x16 vector, codes 000000x ... 1xxxxxx */ { { 6, 6 }, { 5, 6 }, { 4, 5 }, { 4, 5 }, { 3, 5 }, { 3, 5 }, { 2, 5 }, { 2, 5 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, {-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 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 }, {-1, 1 } } }; /* vector codebook count tables, codes 0000000 ... 1111111 */ static vlc_code_t intra_vector_tables[6][128] = { /* 4x2 vector, codes 00000xx ... 1xxxxxx */ { { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 }, {-1, 5 }, {-1, 5 }, {-1, 5 }, {-1, 5 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 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 }, { 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 }, { 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 }, { 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 } }, /* 4x4 vector, codes 0000xxx ... 11xxxxx */ { { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, {-1, 4 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 3, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 }, { 0, 2 } }, /* 8x4 vector, codes 00000xx ... 1xxxxxx */ { { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, {-1, 5 }, {-1, 5 }, {-1, 5 }, {-1, 5 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 5, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 4, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 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 }, { 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 }, { 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 }, { 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 } }, /* 8x8 vector, codes 000000x ... 1xxxxxx */ { { 2, 6 }, { 2, 6 }, {-1, 6 }, {-1, 6 }, { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 6, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 4, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 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 }, { 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 }, { 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 }, { 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 } }, /* 16x8 vector, codes 000000x ... 1xxxxxx */ { { 4, 6 }, { 4, 6 }, {-1, 6 }, {-1, 6 }, { 5, 5 }, { 5, 5 }, { 5, 5 }, { 5, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 6, 3 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 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 }, { 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 }, { 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 }, { 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 } }, /* 16x16 vector, codes 0000000 ... 1xxxxxx */ { { 5, 7 }, {-1, 7 }, { 4, 6 }, { 4, 6 }, { 6, 5 }, { 6, 5 }, { 6, 5 }, { 6, 5 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 3, 4 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 2, 3 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 1, 2 }, { 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 }, { 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 }, { 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 }, { 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 } } }; /* intra mean value, codes 00100101 ... 1111xxxx */ static vlc_code_t intra_mean_table_0[219] = { {135, 8 }, {136, 8 }, {165, 8 }, {134, 8 }, {129, 8 }, {164, 8 }, {163, 8 }, {133, 8 }, {162, 8 }, {174, 8 }, {175, 8 }, {161, 8 }, {160, 8 }, {159, 8 }, {158, 8 }, {157, 8 }, {156, 8 }, {155, 8 }, {154, 8 }, {153, 8 }, {151, 8 }, {152, 8 }, {132, 8 }, {110, 8 }, {131, 8 }, {108, 8 }, {130, 8 }, {166, 8 }, {105, 8 }, {104, 8 }, {103, 8 }, {127, 8 }, {101, 8 }, {167, 8 }, {168, 8 }, { 98, 8 }, {128, 8 }, { 48, 8 }, { 95, 8 }, { 62, 8 }, { 93, 8 }, { 92, 8 }, { 91, 8 }, { 90, 8 }, { 89, 8 }, { 60, 8 }, { 87, 8 }, { 86, 8 }, { 57, 8 }, { 84, 8 }, { 83, 8 }, { 82, 8 }, { 81, 8 }, { 80, 8 }, { 79, 8 }, { 78, 8 }, { 77, 8 }, { 76, 8 }, { 75, 8 }, { 74, 8 }, { 73, 8 }, { 72, 8 }, { 71, 8 }, { 70, 8 }, { 69, 8 }, { 68, 8 }, { 67, 8 }, { 66, 8 }, { 65, 8 }, { 56, 8 }, { 63, 8 }, { 23, 8 }, { 61, 8 }, { 30, 8 }, { 59, 8 }, { 58, 8 }, { 52, 8 }, { 29, 8 }, { 55, 8 }, { 54, 8 }, { 53, 8 }, { 50, 8 }, { 51, 8 }, { 22, 8 }, { 49, 8 }, { 85, 7 }, { 85, 7 }, { 97, 7 }, { 97, 7 }, { 88, 7 }, { 88, 7 }, { 64, 7 }, { 64, 7 }, { 94, 7 }, { 94, 7 }, {106, 7 }, {106, 7 }, {107, 7 }, {107, 7 }, {109, 7 }, {109, 7 }, {111, 7 }, {111, 7 }, {112, 7 }, {112, 7 }, {113, 7 }, {113, 7 }, {114, 7 }, {114, 7 }, {115, 7 }, {115, 7 }, {116, 7 }, {116, 7 }, {117, 7 }, {117, 7 }, {118, 7 }, {118, 7 }, {119, 7 }, {119, 7 }, {120, 7 }, {120, 7 }, { 99, 7 }, { 99, 7 }, {102, 7 }, {102, 7 }, { 28, 7 }, { 28, 7 }, {100, 7 }, {100, 7 }, { 96, 7 }, { 96, 7 }, {139, 7 }, {139, 7 }, { 24, 7 }, { 24, 7 }, { 1, 7 }, { 1, 7 }, {138, 7 }, {138, 7 }, {121, 7 }, {121, 7 }, {122, 7 }, {122, 7 }, {123, 7 }, {123, 7 }, {124, 7 }, {124, 7 }, {125, 7 }, {125, 7 }, {126, 7 }, {126, 7 }, {137, 7 }, {137, 7 }, {140, 7 }, {140, 7 }, {150, 7 }, {150, 7 }, {144, 7 }, {144, 7 }, {141, 7 }, {141, 7 }, {142, 7 }, {142, 7 }, {143, 7 }, {143, 7 }, {145, 7 }, {145, 7 }, {147, 7 }, {147, 7 }, {146, 7 }, {146, 7 }, { 27, 6 }, { 27, 6 }, { 27, 6 }, { 27, 6 }, {148, 6 }, {148, 6 }, {148, 6 }, {148, 6 }, {149, 6 }, {149, 6 }, {149, 6 }, {149, 6 }, { 0, 6 }, { 0, 6 }, { 0, 6 }, { 0, 6 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 26, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 }, { 25, 4 } }; /* intra mean value, codes 0000001101 ... 001001001x */ static vlc_code_t intra_mean_table_1[135] = { {218, 10}, {219, 10}, {220, 10}, {221, 10}, {222, 10}, {217, 10}, {230, 10}, {215, 10}, {208, 10}, {207, 10}, {206, 10}, {214, 10}, {204, 10}, {223, 10}, {224, 10}, {225, 10}, {226, 10}, {227, 10}, {228, 10}, {229, 10}, {213, 10}, {212, 10}, {231, 10}, {232, 10}, {211, 10}, {210, 10}, {236, 10}, {209, 10}, {216, 10}, {205, 10}, { 18, 10}, {186, 9 }, {186, 9 }, {185, 9 }, {185, 9 }, {184, 9 }, {184, 9 }, {182, 9 }, {182, 9 }, {183, 9 }, {183, 9 }, {180, 9 }, {180, 9 }, {181, 9 }, {181, 9 }, {178, 9 }, {178, 9 }, {187, 9 }, {187, 9 }, {176, 9 }, {176, 9 }, {188, 9 }, {188, 9 }, {179, 9 }, {179, 9 }, {173, 9 }, {173, 9 }, {172, 9 }, {172, 9 }, {171, 9 }, {171, 9 }, {170, 9 }, {170, 9 }, {169, 9 }, {169, 9 }, {189, 9 }, {189, 9 }, {190, 9 }, {190, 9 }, {191, 9 }, {191, 9 }, {192, 9 }, {192, 9 }, {193, 9 }, {193, 9 }, {194, 9 }, {194, 9 }, {195, 9 }, {195, 9 }, {196, 9 }, {196, 9 }, {197, 9 }, {197, 9 }, {198, 9 }, {198, 9 }, {200, 9 }, {200, 9 }, {201, 9 }, {201, 9 }, {202, 9 }, {202, 9 }, {203, 9 }, {203, 9 }, {199, 9 }, {199, 9 }, {177, 9 }, {177, 9 }, { 40, 9 }, { 40, 9 }, { 39, 9 }, { 39, 9 }, { 38, 9 }, { 38, 9 }, { 37, 9 }, { 37, 9 }, { 36, 9 }, { 36, 9 }, { 35, 9 }, { 35, 9 }, { 34, 9 }, { 34, 9 }, { 33, 9 }, { 33, 9 }, { 32, 9 }, { 32, 9 }, { 31, 9 }, { 31, 9 }, { 21, 9 }, { 21, 9 }, { 11, 9 }, { 11, 9 }, { 41, 9 }, { 41, 9 }, { 45, 9 }, { 45, 9 }, { 44, 9 }, { 44, 9 }, { 42, 9 }, { 42, 9 }, { 43, 9 }, { 43, 9 }, { 47, 9 }, { 47, 9 }, { 46, 9 }, { 46, 9 } }; /* intra mean value, codes 00000000000001 ... 00000011001xxx */ static vlc_code_t intra_mean_table_2[207] = { {255, 14}, { 14, 14}, { 13, 14}, { 17, 12}, { 17, 12}, { 17, 12}, { 17, 12}, {243, 11}, {243, 11}, {243, 11}, {243, 11}, {243, 11}, {243, 11}, {243, 11}, {243, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11}, {242, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11}, {241, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11}, {240, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11}, {237, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11}, {239, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11}, {235, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11}, {234, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11}, {233, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11}, {244, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11}, {238, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, { 20, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11}, {248, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11}, {249, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11}, {250, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11}, {251, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11}, {252, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11}, {253, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11}, {254, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 12, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, { 10, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11}, {245, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11}, {247, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, { 19, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11}, {246, 11} }; /* intra mean value, codes 00000000000000000000 ... 000000000000001xxxxx */ static vlc_code_t intra_mean_table_3[64] = { { 6, 20}, { 3, 20}, { 4, 20}, { 5, 20}, { 7, 20}, { 8, 20}, { 9, 19}, { 9, 19}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 2, 17}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 16, 16}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15}, { 15, 15} }; /* inter mean value, codes 00001011 ... 1xxxxxxx */ static vlc_code_t inter_mean_table_0[245] = { { 10, 8 }, { 12, 8 }, { 11, 8 }, {-11, 8 }, {-12, 8 }, {-10, 8 }, { -9, 8 }, { -7, 7 }, { -7, 7 }, { -6, 7 }, { -6, 7 }, { 8, 7 }, { 8, 7 }, { -8, 7 }, { -8, 7 }, { 9, 7 }, { 9, 7 }, { 6, 7 }, { 6, 7 }, { 7, 7 }, { 7, 7 }, { -5, 6 }, { -5, 6 }, { -5, 6 }, { -5, 6 }, { -4, 6 }, { -4, 6 }, { -4, 6 }, { -4, 6 }, { 5, 6 }, { 5, 6 }, { 5, 6 }, { 5, 6 }, { 4, 6 }, { 4, 6 }, { 4, 6 }, { 4, 6 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 3, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { 2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -2, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -3, 5 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { -1, 4 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 3 }, { 1, 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 }, { 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 }, { 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 }, { 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 }, { 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 }, { 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 }, { 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 }, { 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 } }; /* inter mean value, codes 000000010010 ... 00001011xxxx */ static vlc_code_t inter_mean_table_1[158] = { {-30, 12}, {-31, 12}, {-32, 12}, {-33, 12}, { 31, 12}, {-34, 12}, {-35, 12}, { 29, 12}, { 30, 12}, { 33, 12}, { 34, 12}, { 32, 12}, {-29, 11}, {-29, 11}, {-28, 11}, {-28, 11}, { 28, 11}, { 28, 11}, {-27, 11}, {-27, 11}, {-26, 11}, {-26, 11}, { 27, 11}, { 27, 11}, { 26, 11}, { 26, 11}, { 25, 11}, { 25, 11}, { 24, 11}, { 24, 11}, { 23, 11}, { 23, 11}, { 22, 11}, { 22, 11}, {-24, 11}, {-24, 11}, {-25, 11}, {-25, 11}, {-23, 10}, {-23, 10}, {-23, 10}, {-23, 10}, {-21, 10}, {-21, 10}, {-21, 10}, {-21, 10}, {-20, 10}, {-20, 10}, {-20, 10}, {-20, 10}, {-19, 10}, {-19, 10}, {-19, 10}, {-19, 10}, {-18, 10}, {-18, 10}, {-18, 10}, {-18, 10}, {-22, 10}, {-22, 10}, {-22, 10}, {-22, 10}, { 19, 10}, { 19, 10}, { 19, 10}, { 19, 10}, { 21, 10}, { 21, 10}, { 21, 10}, { 21, 10}, { 20, 10}, { 20, 10}, { 20, 10}, { 20, 10}, { 18, 10}, { 18, 10}, { 18, 10}, { 18, 10}, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-14, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, {-17, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 16, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 13, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 14, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 15, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, { 17, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-13, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-16, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 }, {-15, 9 } }; /* inter mean value, codes 000000000010111 ... 0000000100011xx */ static vlc_code_t inter_mean_table_2[121] = { { 61, 15}, { 52, 15}, { 58, 15}, {-56, 15}, {-57, 15}, { 59, 15}, {-55, 15}, { 60, 15}, {-54, 15}, { 53, 15}, {-62, 15}, {-60, 15}, {-59, 15}, {-58, 15}, { 57, 15}, { 56, 15}, {-53, 15}, { 55, 15}, { 54, 15}, { 50, 14}, { 50, 14}, { 45, 14}, { 45, 14}, {-52, 14}, {-52, 14}, {-51, 14}, {-51, 14}, {-50, 14}, {-50, 14}, { 46, 14}, { 46, 14}, {-49, 14}, {-49, 14}, {-48, 14}, {-48, 14}, { 48, 14}, { 48, 14}, {-47, 14}, {-47, 14}, { 49, 14}, { 49, 14}, {-45, 14}, {-45, 14}, {-44, 14}, {-44, 14}, { 47, 14}, { 47, 14}, { 51, 14}, { 51, 14}, { 44, 14}, { 44, 14}, {-46, 14}, {-46, 14}, {-43, 13}, {-43, 13}, {-43, 13}, {-43, 13}, {-42, 13}, {-42, 13}, {-42, 13}, {-42, 13}, {-41, 13}, {-41, 13}, {-41, 13}, {-41, 13}, {-40, 13}, {-40, 13}, {-40, 13}, {-40, 13}, {-39, 13}, {-39, 13}, {-39, 13}, {-39, 13}, {-38, 13}, {-38, 13}, {-38, 13}, {-38, 13}, {-37, 13}, {-37, 13}, {-37, 13}, {-37, 13}, {-36, 13}, {-36, 13}, {-36, 13}, {-36, 13}, { 42, 13}, { 42, 13}, { 42, 13}, { 42, 13}, { 36, 13}, { 36, 13}, { 36, 13}, { 36, 13}, { 43, 13}, { 43, 13}, { 43, 13}, { 43, 13}, { 41, 13}, { 41, 13}, { 41, 13}, { 41, 13}, { 40, 13}, { 40, 13}, { 40, 13}, { 40, 13}, { 35, 13}, { 35, 13}, { 35, 13}, { 35, 13}, { 39, 13}, { 39, 13}, { 39, 13}, { 39, 13}, { 38, 13}, { 38, 13}, { 38, 13}, { 38, 13}, { 37, 13}, { 37, 13}, { 37, 13}, { 37, 13} }; /* inter mean value, codes 000000000000100101 ... 0000000000101101xx */ static vlc_code_t inter_mean_table_3[147] = { {111, 18}, {102, 18}, { 99, 18}, {-86, 18}, { 97, 18}, {-97, 18}, { 96, 18}, {-95, 18}, {-76, 18}, {-77, 18}, {-78, 18}, {-85, 18}, {-80, 18}, {-81, 18}, { 89, 18}, { 90, 18}, {-84, 18}, {-89, 18}, { 80, 18}, {-90, 18}, {-88, 18}, { 92, 18}, { 93, 18}, { 95, 18}, {-109,18}, {-79, 17}, {-79, 17}, {-83, 17}, {-83, 17}, {-75, 17}, {-75, 17}, {-74, 17}, {-74, 17}, {-73, 17}, {-73, 17}, {-72, 17}, {-72, 17}, { 87, 17}, { 87, 17}, { 86, 17}, { 86, 17}, { 75, 17}, { 75, 17}, { 85, 17}, { 85, 17}, { 84, 17}, { 84, 17}, { 81, 17}, { 81, 17}, { 79, 17}, { 79, 17}, { 74, 17}, { 74, 17}, { 72, 17}, { 72, 17}, { 82, 17}, { 82, 17}, { 78, 17}, { 78, 17}, { 83, 17}, { 83, 17}, { 76, 17}, { 76, 17}, { 73, 17}, { 73, 17}, { 77, 17}, { 77, 17}, { 70, 16}, { 70, 16}, { 70, 16}, { 70, 16}, { 69, 16}, { 69, 16}, { 69, 16}, { 69, 16}, { 64, 16}, { 64, 16}, { 64, 16}, { 64, 16}, {-68, 16}, {-68, 16}, {-68, 16}, {-68, 16}, {-66, 16}, {-66, 16}, {-66, 16}, {-66, 16}, { 68, 16}, { 68, 16}, { 68, 16}, { 68, 16}, {-69, 16}, {-69, 16}, {-69, 16}, {-69, 16}, { 65, 16}, { 65, 16}, { 65, 16}, { 65, 16}, { 71, 16}, { 71, 16}, { 71, 16}, { 71, 16}, {-70, 16}, {-70, 16}, {-70, 16}, {-70, 16}, {-65, 16}, {-65, 16}, {-65, 16}, {-65, 16}, {-67, 16}, {-67, 16}, {-67, 16}, {-67, 16}, {-63, 16}, {-63, 16}, {-63, 16}, {-63, 16}, {-71, 16}, {-71, 16}, {-71, 16}, {-71, 16}, { 67, 16}, { 67, 16}, { 67, 16}, { 67, 16}, {-61, 16}, {-61, 16}, {-61, 16}, {-61, 16}, {-64, 16}, {-64, 16}, {-64, 16}, {-64, 16}, { 63, 16}, { 63, 16}, { 63, 16}, { 63, 16}, { 62, 16}, { 62, 16}, { 62, 16}, { 62, 16}, { 66, 16}, { 66, 16}, { 66, 16}, { 66, 16} }; /* inter mean value, codes 00000000000001001001 ... 0000000000001001001x */ static vlc_code_t inter_mean_table_4[75] = { {142, 20}, {135, 20}, {125, 20}, {123, 20}, {122, 20}, {119, 20}, {117, 20}, {113, 20}, {104, 20}, {103, 20}, {-120,20}, {-114,20}, {-108,20}, {-104,20}, {-102,20}, {-101,20}, {-93, 20}, {-91, 19}, {-91, 19}, {-96, 19}, {-96, 19}, { 88, 19}, { 88, 19}, { 91, 19}, { 91, 19}, { 94, 19}, { 94, 19}, {121, 19}, {121, 19}, {120, 19}, {120, 19}, {-110,19}, {-110,19}, {118, 19}, {118, 19}, {115, 19}, {115, 19}, {114, 19}, {114, 19}, {112, 19}, {112, 19}, {107, 19}, {107, 19}, {110, 19}, {110, 19}, {109, 19}, {109, 19}, {108, 19}, {108, 19}, {-103,19}, {-103,19}, {106, 19}, {106, 19}, {105, 19}, {105, 19}, {-100,19}, {-100,19}, {101, 19}, {101, 19}, {100, 19}, {100, 19}, {-99, 19}, {-99, 19}, {-82, 19}, {-82, 19}, {-87, 19}, {-87, 19}, {-94, 19}, {-94, 19}, {-98, 19}, {-98, 19}, { 98, 19}, { 98, 19}, {-92, 19}, {-92, 19} }; /* inter mean value, codes 0000000000000000000000 ... 000000000000010010001x */ static vlc_code_t inter_mean_table_5[292] = { {255, 22}, {254, 22}, {253, 22}, {252, 22}, {251, 22}, {250, 22}, {249, 22}, {248, 22}, {247, 22}, {246, 22}, {245, 22}, {244, 22}, {243, 22}, {242, 22}, {241, 22}, {240, 22}, {239, 22}, {238, 22}, {237, 22}, {236, 22}, {235, 22}, {234, 22}, {233, 22}, {232, 22}, {231, 22}, {230, 22}, {229, 22}, {228, 22}, {227, 22}, {226, 22}, {225, 22}, {224, 22}, {223, 22}, {222, 22}, {221, 22}, {220, 22}, {219, 22}, {218, 22}, {217, 22}, {216, 22}, {215, 22}, {214, 22}, {213, 22}, {212, 22}, {211, 22}, {210, 22}, {209, 22}, {208, 22}, {207, 22}, {206, 22}, {205, 22}, {204, 22}, {203, 22}, {202, 22}, {201, 22}, {200, 22}, {199, 22}, {198, 22}, {197, 22}, {196, 22}, {195, 22}, {194, 22}, {193, 22}, {192, 22}, {191, 22}, {190, 22}, {189, 22}, {188, 22}, {187, 22}, {186, 22}, {185, 22}, {184, 22}, {183, 22}, {182, 22}, {181, 22}, {180, 22}, {179, 22}, {178, 22}, {177, 22}, {176, 22}, {175, 22}, {174, 22}, {173, 22}, {172, 22}, {171, 22}, {170, 22}, {169, 22}, {168, 22}, {167, 22}, {166, 22}, {-256,22}, {164, 22}, {-211,22}, {162, 22}, {161, 22}, {160, 22}, {-210,22}, {-168,22}, {157, 22}, {156, 22}, {155, 22}, {154, 22}, {153, 22}, {152, 22}, {151, 22}, {150, 22}, {149, 22}, {148, 22}, {147, 22}, {146, 22}, {145, 22}, {144, 22}, {143, 22}, {-208,22}, {141, 22}, {140, 22}, {139, 22}, {-200,22}, {137, 22}, {136, 22}, {-198,22}, {134, 22}, {133, 22}, {-196,22}, {-201,22}, {130, 22}, {129, 22}, {128, 22}, {127, 22}, {126, 22}, {-195,22}, {124, 22}, {-167,22}, {-166,22}, {-165,22}, {-164,22}, {-163,22}, {-162,22}, {-161,22}, {-180,22}, {-160,22}, {-159,22}, {-158,22}, {-157,22}, {-156,22}, {-155,22}, {-154,22}, {-153,22}, {-152,22}, {-151,22}, {-150,22}, {-149,22}, {-148,22}, {-147,22}, {-146,22}, {-145,22}, {-144,22}, {-143,22}, {-142,22}, {-141,22}, {-140,22}, {-139,22}, {-138,22}, {-137,22}, {-136,22}, {-135,22}, {-134,22}, {-133,22}, {-132,22}, {-131,22}, {-130,22}, {-129,22}, {-126,22}, {-125,22}, {-124,22}, {-123,22}, {-122,22}, {-121,22}, {-118,22}, {-116,22}, {-115,22}, {-113,22}, {-112,22}, {-107,22}, {-106,22}, {-169,22}, {-170,22}, {-171,22}, {-172,22}, {-173,22}, {-174,22}, {-175,22}, {-176,22}, {-177,22}, {-178,22}, {-187,22}, {-179,22}, {-181,22}, {-182,22}, {-183,22}, {-184,22}, {-185,22}, {-186,22}, {-235,22}, {-188,22}, {-189,22}, {-190,22}, {-191,22}, {-192,22}, {-193,22}, {-194,22}, {-197,22}, {-255,22}, {-254,22}, {-253,22}, {-252,22}, {-251,22}, {-250,22}, {-249,22}, {-248,22}, {-247,22}, {-246,22}, {-245,22}, {-244,22}, {-243,22}, {-242,22}, {-241,22}, {-240,22}, {-239,22}, {-238,22}, {-237,22}, {-232,22}, {-236,22}, {-234,22}, {-233,22}, {-217,22}, {-231,22}, {-230,22}, {-229,22}, {-228,22}, {-227,22}, {-226,22}, {-225,22}, {-224,22}, {-223,22}, {-222,22}, {-221,22}, {-220,22}, {-219,22}, {-216,22}, {-202,22}, {-205,22}, {-215,22}, {-214,22}, {-213,22}, {-204,22}, {-212,22}, {-209,22}, {-218,22}, {-199,22}, {-207,22}, {-206,22}, {165, 21}, {165, 21}, {131, 21}, {131, 21}, {163, 21}, {163, 21}, {-203,21}, {-203,21}, {116, 21}, {116, 21}, {159, 21}, {159, 21}, {138, 21}, {138, 21}, {158, 21}, {158, 21}, {-105,21}, {-105,21}, {-111,21}, {-111,21}, {132, 21}, {132, 21}, {128, 21}, {128, 21}, {-127,21}, {-127,21}, {-119,21}, {-119,21}, {-117,21}, {-117,21} }; static uint32_t get_bits (bit_buffer_t *bitbuf, int count) { uint32_t result; /* avoid buffer overflow */ if ((bitbuf->bitpos + 24) >= bitbuf->length) { int i; /* load upto 24 bits of data on sub-byte offset */ result = 0; for (i=(bitbuf->bitpos & ~0x7); i < bitbuf->length; i+=8) { result |= bitbuf->buffer[i >> 3] << (24 + (bitbuf->bitpos - i)); } } else { /* load 32 bits of data (byte-aligned) */ result = BE_32 (&bitbuf->buffer[bitbuf->bitpos >> 3]); /* compensate for sub-byte offset */ result <<= (bitbuf->bitpos & 0x7); } /* flush num bits */ bitbuf->bitpos += count; /* return num bits */ return result >> (32 - count); } /* * Return next 32 bits (left aligned). */ static uint32_t get_bit_cache(bit_buffer_t *bitbuf) { uint32_t result; /* avoid buffer overflow */ if ((bitbuf->bitpos + 24) >= bitbuf->length) { int i; /* load upto 24 bits of data on sub-byte offset */ result = 0; for (i=(bitbuf->bitpos & ~0x7); i < bitbuf->length; i+=8) { result |= bitbuf->buffer[i >> 3] << (24 + (bitbuf->bitpos - i)); } } else { /* load 32 bits of data (byte-aligned) */ result = BE_32 (&bitbuf->buffer[bitbuf->bitpos >> 3]); /* compensate for sub-byte offset */ result <<= (bitbuf->bitpos & 0x7); } return result; } static int decode_svq1_block (bit_buffer_t *bitbuf, uint8_t *pixels, int pitch, int intra) { uint32_t bit_cache; vlc_code_t *vlc; uint8_t *list[63]; uint32_t *dst; uint32_t *codebook; int entries[6]; int i, j, m, n; int mean, stages; int x, y, width, height, level; uint32_t n1, n2, n3, n4; /* initialize list for breadth first processing of vectors */ list[0] = pixels; /* recursively process vector */ for (i=0, m=1, n=1, level=5; i < n; i++) { for (; level > 0; i++) { /* process next depth */ if (i == m) { m = n; if (--level == 0) break; } /* divide block if next bit set */ if (get_bits (bitbuf, 1) == 0) break; /* add child nodes */ list[n++] = list[i]; list[n++] = list[i] + (((level & 1) ? pitch : 1) << ((level / 2) + 1)); } /* destination address and vector size */ dst = (uint32_t *) list[i]; width = 1 << ((4 + level) /2); height = 1 << ((3 + level) /2); /* get number of stages (-1 skips vector, 0 for mean only) */ bit_cache = get_bit_cache (bitbuf); if (intra) vlc = &intra_vector_tables[level][bit_cache >> (32 - 7)]; else vlc = &inter_vector_tables[level][bit_cache >> (32 - 6)]; /* flush bits */ stages = vlc->value; bitbuf->bitpos += vlc->length; if (stages == -1) { if (intra) { for (y=0; y < height; y++) { memset (&dst[y*(pitch / 4)], 0, width); } } continue; /* skip vector */ } if ((stages > 0) && (level >= 4)) { return -1; /* invalid vector */ } /* get mean value for vector */ bit_cache = get_bit_cache (bitbuf); if (intra) { if (bit_cache >= 0x25000000) vlc = &intra_mean_table_0[(bit_cache >> (32 - 8)) - 37]; else if (bit_cache >= 0x03400000) vlc = &intra_mean_table_1[(bit_cache >> (32 - 10)) - 13]; else if (bit_cache >= 0x00040000) vlc = &intra_mean_table_2[(bit_cache >> (32 - 14)) - 1]; else vlc = &intra_mean_table_3[bit_cache >> (32 - 20)]; } else { if (bit_cache >= 0x0B000000) vlc = &inter_mean_table_0[(bit_cache >> (32 - 8)) - 11]; else if (bit_cache >= 0x01200000) vlc = &inter_mean_table_1[(bit_cache >> (32 - 12)) - 18]; else if (bit_cache >= 0x002E0000) vlc = &inter_mean_table_2[(bit_cache >> (32 - 15)) - 23]; else if (bit_cache >= 0x00094000) vlc = &inter_mean_table_3[(bit_cache >> (32 - 18)) - 37]; else if (bit_cache >= 0x00049000) vlc = &inter_mean_table_4[(bit_cache >> (32 - 20)) - 73]; else vlc = &inter_mean_table_5[bit_cache >> (32 - 22)]; } /* flush bits */ mean = vlc->value; bitbuf->bitpos += vlc->length; if (intra && stages == 0) { for (y=0; y < height; y++) { memset (&dst[y*(pitch / 4)], mean, width); } } else { codebook = (uint32_t *) (intra ? intra_codebooks[level] : inter_codebooks[level]); bit_cache = get_bits (bitbuf, 4*stages); /* calculate codebook entries for this vector */ for (j=0; j < stages; j++) { entries[j] = (((bit_cache >> (4*(stages - j - 1))) & 0xF) + 16*j) << (level + 1); } mean -= (stages * 128); n4 = ((mean + (mean >> 31)) << 16) | (mean & 0xFFFF); for (y=0; y < height; y++) { for (x=0; x < (width / 4); x++, codebook++) { if (intra) { n1 = n4; n2 = n4; } else { n3 = dst[x]; /* add mean value to vector */ n1 = ((n3 & 0xFF00FF00) >> 8) + n4; n2 = (n3 & 0x00FF00FF) + n4; } /* add codebook entries to vector */ for (j=0; j < stages; j++) { n3 = codebook[entries[j]] ^ 0x80808080; n1 += ((n3 & 0xFF00FF00) >> 8); n2 += (n3 & 0x00FF00FF); } /* clip to [0..255] */ if (n1 & 0xFF00FF00) { n3 = ((( n1 >> 15) & 0x00010001) | 0x01000100) - 0x00010001; n1 += 0x7F007F00; n1 |= (((~n1 >> 15) & 0x00010001) | 0x01000100) - 0x00010001; n1 &= (n3 & 0x00FF00FF); } if (n2 & 0xFF00FF00) { n3 = ((( n2 >> 15) & 0x00010001) | 0x01000100) - 0x00010001; n2 += 0x7F007F00; n2 |= (((~n2 >> 15) & 0x00010001) | 0x01000100) - 0x00010001; n2 &= (n3 & 0x00FF00FF); } /* store result */ dst[x] = (n1 << 8) | n2; } dst += (pitch / 4); } } } return 0; } static int decode_motion_vector (bit_buffer_t *bitbuf, svq1_pmv_t *mv, svq1_pmv_t **pmv) { uint32_t bit_cache; vlc_code_t *vlc; int diff, sign; int i; for (i=0; i < 2; i++) { /* get motion code */ bit_cache = get_bit_cache (bitbuf); if (!(bit_cache & 0xFFE00000)) return -1; /* invalid vlc code */ if (bit_cache & 0x80000000) { diff = 0; /* flush bit */ bitbuf->bitpos++; } else { if (bit_cache >= 0x06000000) { vlc = &motion_table_0[(bit_cache >> (32 - 7)) - 3]; } else { vlc = &motion_table_1[(bit_cache >> (32 - 12)) - 2]; } /* decode motion vector differential */ sign = (int) (bit_cache << (vlc->length - 1)) >> 31; diff = (vlc->value ^ sign) - sign; /* flush bits */ bitbuf->bitpos += vlc->length; } /* add median of motion vector predictors and clip result */ if (i == 1) mv->y = ((diff + MEDIAN(pmv[0]->y, pmv[1]->y, pmv[2]->y)) << 26) >> 26; else mv->x = ((diff + MEDIAN(pmv[0]->x, pmv[1]->x, pmv[2]->x)) << 26) >> 26; } return 0; } static void clip_motion_vector (int x, int y, int width, int height, svq1_pmv_t *mv) { if (mv->x < -2*x) mv->x = -2*x; else if (mv->x > 2*(width - x)) mv->x = 2*(width - x); if (mv->y < -2*y) mv->y = -2*y; else if (mv->y > 2*(height - y)) mv->y = 2*(height - y); } static void skip_block (uint8_t *current, uint8_t *previous, int pitch, int x, int y) { uint8_t *src; uint8_t *dst; int i; src = &previous[x + y*pitch]; dst = current; for (i=0; i < 16; i++) { memcpy (dst, src, 16); src += pitch; dst += pitch; } } static int motion_inter_block (bit_buffer_t *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv_t *motion, unsigned int x, unsigned int y, unsigned int width, unsigned int height) { uint8_t *src; uint8_t *dst; svq1_pmv_t mv; svq1_pmv_t *pmv[3]; int sx, sy; int result; /* predict and decode motion vector */ pmv[0] = &motion[0]; pmv[1] = &motion[(x / 8) + 2]; pmv[2] = &motion[(x / 8) + 4]; if (y == 0) { pmv[1] = pmv[0]; pmv[2] = pmv[0]; } result = decode_motion_vector (bitbuf, &mv, pmv); if (result != 0) return result; motion[0].x = mv.x; motion[0].y = mv.y; motion[(x / 8) + 2].x = mv.x; motion[(x / 8) + 2].y = mv.y; motion[(x / 8) + 3].x = mv.x; motion[(x / 8) + 3].y = mv.y; /* clip motion vector to frame border */ clip_motion_vector (x, y, (width - 16), (height - 16), &mv); src = &previous[(x + (mv.x >> 1)) + (y + (mv.y >> 1))*pitch]; dst = current; /* form prediction */ if (mv.y & 0x1) { if (mv.x & 0x1) { for (sy=0; sy < 16; sy++) { for (sx=0; sx < 16; sx++) { dst[sx] = (src[sx] + src[sx + 1] + src[sx + pitch] + src[sx + pitch + 1] + 2) >> 2; } src += pitch; dst += pitch; } } else { for (sy=0; sy < 16; sy++) { for (sx=0; sx < 16; sx++) { dst[sx] = (src[sx] + src[sx + pitch] + 1) >> 1; } src += pitch; dst += pitch; } } } else { if (mv.x & 0x1) { for (sy=0; sy < 16; sy++) { for (sx=0; sx < 16; sx++) { dst[sx] = (src[sx] + src[sx + 1] + 1) >> 1; } src += pitch; dst += pitch; } } else { for (sy=0; sy < 16; sy++) { memcpy (dst, src, 16); src += pitch; dst += pitch; } } } return 0; } static int motion_inter_4v_block (bit_buffer_t *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv_t *motion, unsigned int x, unsigned int y, unsigned int width, unsigned int height) { uint8_t *src; uint8_t *dst; svq1_pmv_t mv; svq1_pmv_t *pmv[4]; int sx, sy; int i, result; /* predict and decode motion vector (0) */ pmv[0] = &motion[0]; pmv[1] = &motion[(x / 8) + 2]; pmv[2] = &motion[(x / 8) + 4]; if (y == 0) { pmv[1] = pmv[0]; pmv[2] = pmv[0]; } result = decode_motion_vector (bitbuf, &mv, pmv); if (result != 0) return result; /* predict and decode motion vector (1) */ pmv[0] = &mv; pmv[1] = &motion[(x / 8) + 3]; if (y == 0) { pmv[1] = pmv[0]; pmv[2] = pmv[0]; } result = decode_motion_vector (bitbuf, &motion[0], pmv); if (result != 0) return result; /* predict and decode motion vector (2) */ pmv[1] = &motion[0]; pmv[2] = &motion[(x / 8) + 1]; result = decode_motion_vector (bitbuf, &motion[(x / 8) + 2], pmv); if (result != 0) return result; /* predict and decode motion vector (3) */ pmv[2] = &motion[(x / 8) + 2]; pmv[3] = &motion[(x / 8) + 3]; result = decode_motion_vector (bitbuf, pmv[3], pmv); if (result != 0) return result; /* clip motion vectors to frame border */ clip_motion_vector (x, y, (width - 8), (height - 8), pmv[0]); clip_motion_vector ((x + 8), y, (width - 8), (height - 8), pmv[1]); clip_motion_vector (x, (y + 8), (width - 8), (height - 8), pmv[2]); clip_motion_vector ((x + 8), (y + 8), (width - 8), (height - 8), pmv[3]); /* form predictions */ for (i=0; i < 4; i++) { src = &previous[(x + (pmv[i]->x >> 1)) + (y + (pmv[i]->y >> 1))*pitch]; dst = current; if (pmv[i]->y & 0x1) { if (pmv[i]->x & 0x1) { for (sy=0; sy < 8; sy++) { for (sx=0; sx < 8; sx++) { dst[sx] = (src[sx] + src[sx + 1] + src[sx + pitch] + src[sx + pitch + 1] + 2) >> 2; } src += pitch; dst += pitch; } } else { for (sy=0; sy < 8; sy++) { for (sx=0; sx < 8; sx++) { dst[sx] = (src[sx] + src[sx + pitch] + 1) >> 1; } src += pitch; dst += pitch; } } } else { if (pmv[i]->x & 0x1) { for (sy=0; sy < 8; sy++) { for (sx=0; sx < 8; sx++) { dst[sx] = (src[sx] + src[sx + 1] + 1) >> 1; } src += pitch; dst += pitch; } } else { for (sy=0; sy < 8; sy++) { memcpy (dst, src, 8); src += pitch; dst += pitch; } } } /* select next block */ if (i & 1) { current += 8*(pitch - 1); previous += 8*(pitch - 1); } else { current += 8; previous += 8; } } return 0; } static int decode_delta_block (bit_buffer_t *bitbuf, uint8_t *current, uint8_t *previous, int pitch, svq1_pmv_t *motion, unsigned int x, unsigned int y, unsigned int width, unsigned int height) { uint32_t bit_cache; uint32_t block_type; int result = 0; /* get block type */ bit_cache = get_bit_cache (bitbuf); bit_cache >>= (32 - 3); block_type = block_type_table[bit_cache].value; bitbuf->bitpos += block_type_table[bit_cache].length; /* reset motion vectors */ if (block_type == SVQ1_BLOCK_SKIP || block_type == SVQ1_BLOCK_INTRA) { motion[0].x = 0; motion[0].y = 0; motion[(x / 8) + 2].x = 0; motion[(x / 8) + 2].y = 0; motion[(x / 8) + 3].x = 0; motion[(x / 8) + 3].y = 0; } switch (block_type) { case SVQ1_BLOCK_SKIP: skip_block (current, previous, pitch, x, y); break; case SVQ1_BLOCK_INTER: result = motion_inter_block (bitbuf, current, previous, pitch, motion, x, y, width, height); if (result != 0) break; result = decode_svq1_block (bitbuf, current, pitch, 0); break; case SVQ1_BLOCK_INTER_4V: result = motion_inter_4v_block (bitbuf, current, previous, pitch, motion, x, y, width, height); if (result != 0) break; result = decode_svq1_block (bitbuf, current, pitch, 0); break; case SVQ1_BLOCK_INTRA: result = decode_svq1_block (bitbuf, current, pitch, 1); break; } return result; } static int decode_frame_header (bit_buffer_t *bitbuf, svq1_t *svq1) { int frame_size_code; /* unknown field */ get_bits (bitbuf, 8); /* frame type */ svq1->frame_type = get_bits (bitbuf, 2); if (svq1->frame_type == 3) return -1; if (svq1->frame_type == SVQ1_FRAME_INTRA) { /* unknown fields */ if (svq1->frame_code == 0x50 || svq1->frame_code == 0x60) { get_bits (bitbuf, 16); } if ((svq1->frame_code ^ 0x10) >= 0x50) { bitbuf->bitpos += 8*get_bits (bitbuf, 8); } get_bits (bitbuf, 2); get_bits (bitbuf, 2); get_bits (bitbuf, 1); /* load frame size */ frame_size_code = get_bits (bitbuf, 3); if (frame_size_code == 7) { /* load width, height (12 bits each) */ svq1->frame_width = get_bits (bitbuf, 12); svq1->frame_height = get_bits (bitbuf, 12); if (!svq1->frame_width || !svq1->frame_height) return -1; } else { /* get width, height from table */ svq1->frame_width = frame_size_table[frame_size_code].width; svq1->frame_height = frame_size_table[frame_size_code].height; } } /* unknown fields */ if (get_bits (bitbuf, 1) == 1) { get_bits (bitbuf, 1); get_bits (bitbuf, 1); if (get_bits (bitbuf, 2) != 0) return -1; } if (get_bits (bitbuf, 1) == 1) { get_bits (bitbuf, 1); get_bits (bitbuf, 4); get_bits (bitbuf, 1); get_bits (bitbuf, 2); while (get_bits (bitbuf, 1) == 1) { get_bits (bitbuf, 8); } } return 0; } static int svq1_decode_frame (svq1_t *svq1, uint8_t *buffer, int length) { bit_buffer_t bitbuf; uint8_t *current, *previous; int result, i, x, y, width, height; int luma_size, chroma_size; /* initialize bit buffer */ bitbuf.buffer = buffer; bitbuf.bitpos = 0; bitbuf.length = 8*length; /* decode frame header */ svq1->frame_code = get_bits (&bitbuf, 22); if ((svq1->frame_code & ~0x70) || !(svq1->frame_code & 0x60)) return -1; /* swap some header bytes (why?) */ if (svq1->frame_code != 0x20) { uint32_t *src = (uint32_t *) (buffer + 4); for (i=0; i < 4; i++) { src[i] = ((src[i] << 16) | (src[i] >> 16)) ^ src[7 - i]; } } result = decode_frame_header (&bitbuf, svq1); if (result != 0 || bitbuf.bitpos > bitbuf.length) return result; /* check frame size (changed?) */ if (((svq1->frame_width + 3) & ~0x3) != svq1->width || ((svq1->frame_height + 3) & ~0x3) != svq1->height) { /* free current buffers */ free (svq1->current); free (svq1->previous); free (svq1->motion); svq1->width = (svq1->frame_width + 3) & ~0x3; svq1->height = (svq1->frame_height + 3) & ~0x3; svq1->ratio = (double)svq1->width/(double)svq1->height; svq1->luma_width = (svq1->width + 15) & ~0xF; svq1->luma_height = (svq1->height + 15) & ~0xF; svq1->chroma_width = ((svq1->width / 4) + 15) & ~0xF; svq1->chroma_height = ((svq1->height / 4) + 15) & ~0xF; /* allocate new pixel and motion buffers for updated frame size */ luma_size = svq1->luma_width * svq1->luma_height; chroma_size = svq1->chroma_width * svq1->chroma_height; svq1->motion = (svq1_pmv_t *) malloc (((svq1->luma_width / 8) + 3) * sizeof(svq1_pmv_t)); svq1->current = (uint8_t *) malloc (luma_size + 2*chroma_size); svq1->previous = (uint8_t *) malloc (luma_size + 2*chroma_size); svq1->offsets[0] = 0; svq1->offsets[1] = luma_size; svq1->offsets[2] = luma_size + chroma_size; for (i=0; i < 3; i++) { svq1->base[i] = svq1->current + svq1->offsets[i]; } svq1->reference_frame = 0; } /* delta frame requires reference frame */ if (svq1->frame_type != SVQ1_FRAME_INTRA && !svq1->reference_frame) return -1; /* decode y, u and v components */ for (i=0; i < 3; i++) { if (i == 0) { width = svq1->luma_width; height = svq1->luma_height; } else { width = svq1->chroma_width; height = svq1->chroma_height; } current = svq1->current + svq1->offsets[i]; previous = svq1->previous + svq1->offsets[i]; if (svq1->frame_type == SVQ1_FRAME_INTRA) { /* keyframe */ for (y=0; y < height; y+=16) { for (x=0; x < width; x+=16) { result = decode_svq1_block (&bitbuf, ¤t[x], width, 1); if (result != 0 || bitbuf.bitpos > bitbuf.length) return result; } current += 16*width; } } else { /* delta frame */ memset (svq1->motion, 0, ((width / 8) + 3) * sizeof(svq1_pmv_t)); for (y=0; y < height; y+=16) { for (x=0; x < width; x+=16) { result = decode_delta_block (&bitbuf, ¤t[x], previous, width, svq1->motion, x, y, width, height); if (result != 0 || bitbuf.bitpos > bitbuf.length) return result; } svq1->motion[0].x = 0; svq1->motion[0].y = 0; current += 16*width; } } } /* update pixel buffers for frame copy */ for (i=0; i < 3; i++) { svq1->base[i] = svq1->current + svq1->offsets[i]; } /* update backward reference frame */ if (svq1->frame_type != SVQ1_FRAME_DROPPABLE) { uint8_t *tmp = svq1->previous; svq1->previous = svq1->current; svq1->current = tmp; svq1->reference_frame = 1; } return 0; } static void svq1dec_decode_data (video_decoder_t *this_gen, buf_element_t *buf) { svq1dec_decoder_t *this = (svq1dec_decoder_t *) this_gen; if (buf->decoder_flags & BUF_FLAG_PREVIEW) return; if (buf->decoder_flags & BUF_FLAG_HEADER) { this->video_step = buf->decoder_info[1]; if (this->buf) free (this->buf); this->bufsize = VIDEOBUFSIZE; this->buf = malloc(this->bufsize); this->size = 0; this->stream->video_out->open (this->stream->video_out, this->stream); this->decoder_ok = 1; /* load the stream/meta info */ this->stream->meta_info[XINE_META_INFO_VIDEOCODEC] = strdup("Sorenson Video 1"); } else if (this->decoder_ok) { if (this->size + buf->size > this->bufsize) { this->bufsize = this->size + 2 * buf->size; this->buf = realloc (this->buf, this->bufsize); } xine_fast_memcpy (&this->buf[this->size], buf->content, buf->size); this->size += buf->size; if (buf->decoder_flags & BUF_FLAG_FRAMERATE) this->video_step = buf->decoder_info[0]; if (buf->decoder_flags & BUF_FLAG_FRAME_END) { vo_frame_t *img; int result; result = svq1_decode_frame (this->svq1, this->buf, this->size); if (this->svq1->width > 0 && this->svq1->height > 0) { img = this->stream->video_out->get_frame (this->stream->video_out, this->svq1->width, this->svq1->height, this->svq1->ratio, XINE_IMGFMT_YV12, VO_BOTH_FIELDS); img->duration = this->video_step; img->pts = buf->pts; img->bad_frame = (result != 0); if (result == 0) { yuv9_to_yv12 (this->svq1->base[0], this->svq1->luma_width, img->base[0], img->pitches[0], this->svq1->base[1], this->svq1->chroma_width, img->base[1], img->pitches[1], this->svq1->base[2], this->svq1->chroma_width, img->base[2], img->pitches[2], this->svq1->width, this->svq1->height); } img->draw(img, this->stream); img->free(img); } this->size = 0; } } } static void svq1dec_flush (video_decoder_t *this_gen) { } static void svq1dec_reset (video_decoder_t *this_gen) { svq1dec_decoder_t *this = (svq1dec_decoder_t *) this_gen; if (this->svq1) { this->svq1->reference_frame = 0; } this->size = 0; } static void svq1dec_discontinuity (video_decoder_t *this_gen) { } static void svq1dec_dispose (video_decoder_t *this_gen) { svq1dec_decoder_t *this = (svq1dec_decoder_t *) this_gen; if (this->svq1) { free (this->svq1->current); free (this->svq1->previous); free (this->svq1->motion); free (this->svq1); this->svq1 = NULL; } if (this->buf) { free (this->buf); this->buf = NULL; } if (this->decoder_ok) { this->decoder_ok = 0; this->stream->video_out->close(this->stream->video_out, this->stream); } free (this_gen); } static video_decoder_t *open_plugin (video_decoder_class_t *class_gen, xine_stream_t *stream) { svq1dec_decoder_t *this ; this = (svq1dec_decoder_t *) xine_xmalloc (sizeof (svq1dec_decoder_t)); this->video_decoder.decode_data = svq1dec_decode_data; this->video_decoder.flush = svq1dec_flush; this->video_decoder.reset = svq1dec_reset; this->video_decoder.discontinuity = svq1dec_discontinuity; this->video_decoder.dispose = svq1dec_dispose; this->size = 0; this->stream = stream; this->class = (svq1_class_t *) class_gen; this->svq1 = (svq1_t *) xine_xmalloc (sizeof(svq1_t)); this->decoder_ok = 0; this->buf = NULL; return &this->video_decoder; } static char *get_identifier (video_decoder_class_t *this) { return "SVQ1"; } static char *get_description (video_decoder_class_t *this) { return "Sorenson Video v1 decoder plugin"; } static void dispose_class (video_decoder_class_t *this) { free (this); } static void *init_plugin (xine_t *xine, void *data) { svq1_class_t *this; this = (svq1_class_t *) xine_xmalloc (sizeof (svq1_class_t)); this->decoder_class.open_plugin = open_plugin; this->decoder_class.get_identifier = get_identifier; this->decoder_class.get_description = get_description; this->decoder_class.dispose = dispose_class; return this; } /* * exported plugin catalog entry */ static uint32_t video_types[] = { BUF_VIDEO_SORENSON_V1, 0 }; static decoder_info_t dec_info_video = { video_types, /* supported types */ 6 /* priority */ }; plugin_info_t xine_plugin_info[] = { /* type, API, "name", version, special_info, init_function */ { PLUGIN_VIDEO_DECODER, 15, "svq1", XINE_VERSION_CODE, &dec_info_video, init_plugin }, { PLUGIN_NONE, 0, "", 0, NULL, NULL } };