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140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
/*
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* MPEG4 structs and tables
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*
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* Copyright (c) 2006 vixy project
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*
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* This file contains the code that based on FFmpeg (http://ffmpeg.mplayerhq.hu/)
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* See original copyright notice in /FFMPEG_CREDITS and /FFMPEG_IMPORTS
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*
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* This file is part of VIXY FLV Converter.
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*
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* 'VIXY FLV Converter' is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* 'VIXY FLV Converter' is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef M4V_H
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#define M4V_H
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#include <stdio.h>
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#include <stdlib.h>
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#include <memory.h>
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#include "bitreader.h"
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#include "dcprediction.h"
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#define VOS_STARTCODE 0x1B0
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#define USERDATA_STARTCODE 0x1B2
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#define GOP_STARTCODE 0x1B3
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#define VISUAL_OBJECT_STARTCODE 0x1B5
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#define VOP_STARTCODE 0x1B6
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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typedef struct _M4V_BLOCK
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{
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int block[64];
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int index;
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int last_index;
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} M4V_BLOCK;
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typedef struct _M4V_MICROBLOCK
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{
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M4V_BLOCK block[6];
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int qscale;
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int dquant; // for encoding
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int ac_pred;
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int intra;
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int skip;
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#define MV_TYPE_16X16 0
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#define MV_TYPE_8X8 1
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int mv_type;
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VLCDEC mv_x[4];
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VLCDEC mv_y[4];
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} M4V_MICROBLOCK;
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typedef struct _M4V_VOL
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{
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int width;
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int height;
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int time_bits;
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M4V_DCPRED dcpred;
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} M4V_VOL;
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typedef struct _M4V_VOP
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{
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#define M4V_I_TYPE 0
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#define M4V_P_TYPE 1
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#define M4V_B_TYPE 2
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int picture_type;
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int time;
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int icount;
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int intra_dc_threshold;
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int rounding_type;
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int qscale;
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int f_code;
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int b_code;
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} M4V_VOP;
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// same as FLV
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static const uint8 zig_zag_scan[64] =
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{
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0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5,
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12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28,
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35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51,
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58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63
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};
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// M4V ADDED
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static const uint8 alternate_horizontal_scan[64] =
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{
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0, 1, 2, 3, 8, 9, 16, 17,
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10, 11, 4, 5, 6, 7, 15, 14,
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13, 12, 19, 18, 24, 25, 32, 33,
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26, 27, 20, 21, 22, 23, 28, 29,
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30, 31, 34, 35, 40, 41, 48, 49,
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42, 43, 36, 37, 38, 39, 44, 45,
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46, 47, 50, 51, 56, 57, 58, 59,
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52, 53, 54, 55, 60, 61, 62, 63,
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};
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// M4V ADDED
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static const uint8 alternate_vertical_scan[64] =
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{
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0, 8, 16, 24, 1, 9, 2, 10,
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17, 25, 32, 40, 48, 56, 57, 49,
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41, 33, 26, 18, 3, 11, 4, 12,
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19, 27, 34, 42, 50, 58, 35, 43,
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51, 59, 20, 28, 5, 13, 6, 14,
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21, 29, 36, 44, 52, 60, 37, 45,
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53, 61, 22, 30, 7, 15, 23, 31,
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38, 46, 54, 62, 39, 47, 55, 63,
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};
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#endif // M4V_H
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