| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * MSMPEG4 decoder header | ||
| 3 | * copyright (c) 2007 Aurelien Jacobs <aurel@gnuage.org> | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | #ifndef AVCODEC_MSMPEG4DEC_H | ||
| 23 | #define AVCODEC_MSMPEG4DEC_H | ||
| 24 | |||
| 25 | #include "avcodec.h" | ||
| 26 | #include "mpegvideo.h" | ||
| 27 | |||
| 28 | #define INTER_INTRA_VLC_BITS 3 | ||
| 29 | #define MB_NON_INTRA_VLC_BITS 9 | ||
| 30 | |||
| 31 | typedef struct MSMP4DecContext { | ||
| 32 | MpegEncContext m; | ||
| 33 | int bit_rate; | ||
| 34 | int mv_table_index; | ||
| 35 | int rl_table_index; | ||
| 36 | int rl_chroma_table_index; | ||
| 37 | int dc_table_index; | ||
| 38 | int use_skip_mb_code; | ||
| 39 | int per_mb_rl_table; | ||
| 40 | int esc3_level_length; | ||
| 41 | int esc3_run_length; | ||
| 42 | } MSMP4DecContext; | ||
| 43 | |||
| 44 | 206689 | static inline MSMP4DecContext *mpv_to_msmpeg4(MpegEncContext *s) | |
| 45 | { | ||
| 46 | // Only legal because no MSMPEG-4 decoder uses slice-threading. | ||
| 47 | 206689 | return (MSMP4DecContext*)s; | |
| 48 | } | ||
| 49 | |||
| 50 | extern const VLCElem *ff_mb_non_intra_vlc[4]; | ||
| 51 | extern VLCElem ff_inter_intra_vlc[8]; | ||
| 52 | |||
| 53 | int ff_msmpeg4_decode_init(AVCodecContext *avctx); | ||
| 54 | int ff_msmpeg4_decode_picture_header(MpegEncContext *s); | ||
| 55 | int ff_msmpeg4_decode_ext_header(MpegEncContext *s, int buf_size); | ||
| 56 | void ff_msmpeg4_decode_motion(MSMP4DecContext *ms, int *mx_ptr, int *my_ptr); | ||
| 57 | int ff_msmpeg4_decode_block(MSMP4DecContext *ms, int16_t * block, | ||
| 58 | int n, int coded, const uint8_t *scan_table); | ||
| 59 | |||
| 60 | #endif | ||
| 61 |