Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>release/5.1
Andreas Rheinhardt
3 years ago
parent
20d74fb09d
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1187765f3b
11 changed files with 108 additions and 70 deletions
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/*
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* MPEG-4 decoder internal header. |
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* Copyright (c) 2000,2001 Fabrice Bellard |
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* Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 AVCODEC_MPEG4VIDEODEC_H |
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#define AVCODEC_MPEG4VIDEODEC_H |
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#include <stdint.h> |
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#include "get_bits.h" |
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#include "mpegvideo.h" |
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typedef struct Mpeg4DecContext { |
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MpegEncContext m; |
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/// number of bits to represent the fractional part of time
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int time_increment_bits; |
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int shape; |
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int vol_sprite_usage; |
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int sprite_brightness_change; |
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int num_sprite_warping_points; |
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/// sprite trajectory points
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uint16_t sprite_traj[4][2]; |
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/// sprite shift [isChroma]
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int sprite_shift[2]; |
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// reversible vlc
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int rvlc; |
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/// could this stream contain resync markers
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int resync_marker; |
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/// time distance of first I -> B, used for interlaced B-frames
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int t_frame; |
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int new_pred; |
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int enhancement_type; |
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int scalability; |
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/// QP above which the ac VLC should be used for intra dc
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int intra_dc_threshold; |
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/* bug workarounds */ |
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int divx_version; |
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int divx_build; |
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int xvid_build; |
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int lavc_build; |
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int vo_type; |
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/// flag for having shown the warning about invalid Divx B-frames
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int showed_packed_warning; |
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/** does the stream contain the low_delay flag,
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* used to work around buggy encoders. */ |
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int vol_control_parameters; |
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int cplx_estimation_trash_i; |
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int cplx_estimation_trash_p; |
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int cplx_estimation_trash_b; |
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int rgb; |
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int32_t block32[12][64]; |
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// 0 = DCT, 1 = DPCM top to bottom scan, -1 = DPCM bottom to top scan
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int dpcm_direction; |
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int16_t dpcm_macroblock[3][256]; |
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} Mpeg4DecContext; |
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int ff_mpeg4_decode_picture_header(Mpeg4DecContext *ctx, GetBitContext *gb, |
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int header, int parse_only); |
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void ff_mpeg4_decode_studio(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, |
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uint8_t *dest_cr, int block_size, int uvlinesize, |
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int dct_linesize, int dct_offset); |
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int ff_mpeg4_decode_partitions(Mpeg4DecContext *ctx); |
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int ff_mpeg4_decode_video_packet_header(Mpeg4DecContext *ctx); |
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int ff_mpeg4_decode_studio_slice_header(Mpeg4DecContext *ctx); |
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int ff_mpeg4_workaround_bugs(AVCodecContext *avctx); |
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void ff_mpeg4_pred_ac(MpegEncContext *s, int16_t *block, int n, |
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int dir); |
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int ff_mpeg4_frame_end(AVCodecContext *avctx, const uint8_t *buf, int buf_size); |
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#endif |
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