1 /* 2 * MSMPEG4 backend for encoder and decoder 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_MSMPEG4_H 23 #define AVCODEC_MSMPEG4_H 24 25 #include <stdint.h> 26 27 #include "config.h" 28 #include "avcodec.h" 29 #include "mpegvideo.h" 30 #include "msmpeg4data.h" 31 #include "put_bits.h" 32 33 #define INTER_INTRA_VLC_BITS 3 34 #define MB_NON_INTRA_VLC_BITS 9 35 #define MB_INTRA_VLC_BITS 9 36 37 #define II_BITRATE 128*1024 38 #define MBAC_BITRATE 50*1024 39 40 #define DC_MAX 119 41 42 extern VLC ff_mb_non_intra_vlc[4]; 43 extern VLC ff_inter_intra_vlc; 44 45 void ff_msmpeg4_code012(PutBitContext *pb, int n); 46 void ff_msmpeg4_common_init(MpegEncContext *s); 47 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n); 48 void ff_msmpeg4_handle_slices(MpegEncContext *s); 49 void ff_msmpeg4_encode_motion(MpegEncContext * s, int mx, int my); 50 int ff_msmpeg4_coded_block_pred(MpegEncContext * s, int n, 51 uint8_t **coded_block_ptr); 52 53 void ff_msmpeg4_encode_init(MpegEncContext *s); 54 void ff_msmpeg4_encode_picture_header(MpegEncContext *s, int picture_number); 55 void ff_msmpeg4_encode_ext_header(MpegEncContext *s); 56 void ff_msmpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], 57 int motion_x, int motion_y); 58 59 int ff_msmpeg4_decode_init(AVCodecContext *avctx); 60 int ff_msmpeg4_decode_picture_header(MpegEncContext *s); 61 int ff_msmpeg4_decode_ext_header(MpegEncContext *s, int buf_size); 62 void ff_msmpeg4_decode_motion(MpegEncContext * s, int *mx_ptr, int *my_ptr); 63 int ff_msmpeg4_decode_block(MpegEncContext * s, int16_t * block, 64 int n, int coded, const uint8_t *scan_table); 65 int ff_msmpeg4_pred_dc(MpegEncContext *s, int n, 66 int16_t **dc_val_ptr, int *dir_ptr); 67 68 69 #define CONFIG_MSMPEG4_DECODER (CONFIG_MSMPEG4V1_DECODER || \ 70 CONFIG_MSMPEG4V2_DECODER || \ 71 CONFIG_MSMPEG4V3_DECODER || \ 72 CONFIG_WMV1_DECODER || \ 73 CONFIG_WMV2_DECODER || \ 74 CONFIG_VC1_DECODER) 75 #define CONFIG_MSMPEG4_ENCODER (CONFIG_MSMPEG4V2_ENCODER || \ 76 CONFIG_MSMPEG4V3_ENCODER || \ 77 CONFIG_WMV1_ENCODER || \ 78 CONFIG_WMV2_ENCODER) 79 80 #endif /* AVCODEC_MSMPEG4_H */ 81