110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
/*
|
|
* MPEG-4 decoder internal header.
|
|
* Copyright (c) 2000,2001 Fabrice Bellard
|
|
* Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_MPEG4VIDEODEC_H
|
|
#define AVCODEC_MPEG4VIDEODEC_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "get_bits.h"
|
|
#include "mpegvideo.h"
|
|
#include "mpeg4videodsp.h"
|
|
|
|
|
|
typedef struct Mpeg4DecContext {
|
|
MpegEncContext m;
|
|
|
|
/// number of bits to represent the fractional part of time
|
|
int time_increment_bits;
|
|
int shape;
|
|
int vol_sprite_usage;
|
|
int sprite_brightness_change;
|
|
int sprite_warping_accuracy;
|
|
int num_sprite_warping_points;
|
|
int real_sprite_warping_points;
|
|
int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
|
|
int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
|
|
/// sprite trajectory points
|
|
uint16_t sprite_traj[4][2];
|
|
/// sprite shift [isChroma]
|
|
int sprite_shift[2];
|
|
|
|
// reversible vlc
|
|
int rvlc;
|
|
/// could this stream contain resync markers
|
|
int resync_marker;
|
|
/// time distance of first I -> B, used for interlaced B-frames
|
|
int t_frame;
|
|
|
|
int new_pred;
|
|
int enhancement_type;
|
|
int scalability;
|
|
|
|
/// QP above which the ac VLC should be used for intra dc
|
|
int intra_dc_threshold;
|
|
|
|
/* bug workarounds */
|
|
int divx_version;
|
|
int divx_build;
|
|
int xvid_build;
|
|
int lavc_build;
|
|
|
|
int vo_type;
|
|
|
|
/// flag for having shown the warning about invalid Divx B-frames
|
|
int showed_packed_warning;
|
|
/** does the stream contain the low_delay flag,
|
|
* used to work around buggy encoders. */
|
|
int vol_control_parameters;
|
|
int cplx_estimation_trash_i;
|
|
int cplx_estimation_trash_p;
|
|
int cplx_estimation_trash_b;
|
|
|
|
int rgb;
|
|
|
|
Mpeg4VideoDSPContext mdsp;
|
|
|
|
int32_t block32[12][64];
|
|
// 0 = DCT, 1 = DPCM top to bottom scan, -1 = DPCM bottom to top scan
|
|
int dpcm_direction;
|
|
int16_t dpcm_macroblock[3][256];
|
|
} Mpeg4DecContext;
|
|
|
|
int ff_mpeg4_decode_picture_header(Mpeg4DecContext *ctx, GetBitContext *gb,
|
|
int header, int parse_only);
|
|
void ff_mpeg4_decode_studio(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb,
|
|
uint8_t *dest_cr, int block_size, int uvlinesize,
|
|
int dct_linesize, int dct_offset);
|
|
void ff_mpeg4_mcsel_motion(MpegEncContext *s,
|
|
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
|
|
uint8_t *const *ref_picture);
|
|
int ff_mpeg4_decode_partitions(Mpeg4DecContext *ctx);
|
|
int ff_mpeg4_decode_video_packet_header(Mpeg4DecContext *ctx);
|
|
int ff_mpeg4_decode_studio_slice_header(Mpeg4DecContext *ctx);
|
|
int ff_mpeg4_workaround_bugs(AVCodecContext *avctx);
|
|
void ff_mpeg4_pred_ac(MpegEncContext *s, int16_t *block, int n,
|
|
int dir);
|
|
int ff_mpeg4_frame_end(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
|
|
|
|
|
|
#endif
|