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  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. int ff_msmpeg4_decode_motion(MpegEncContext * s, int *mx_ptr, int *my_ptr);
  53. int ff_msmpeg4_decode_block(MpegEncContext * s, int16_t * block,
  54.                             int n, int coded, const uint8_t *scan_table);
  55. int ff_msmpeg4_pred_dc(MpegEncContext *s, int n,
  56.                        int16_t **dc_val_ptr, int *dir_ptr);
  57. int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
  58.  
  59. #define CONFIG_MSMPEG4_DECODER (CONFIG_MSMPEG4V1_DECODER || \
  60.                                 CONFIG_MSMPEG4V2_DECODER || \
  61.                                 CONFIG_MSMPEG4V3_DECODER || \
  62.                                 CONFIG_WMV2_DECODER      || \
  63.                                 CONFIG_VC1_DECODER)
  64. #define CONFIG_MSMPEG4_ENCODER (CONFIG_MSMPEG4V2_ENCODER || \
  65.                                 CONFIG_MSMPEG4V3_ENCODER || \
  66.                                 CONFIG_WMV2_ENCODER)
  67.  
  68. #endif /* AVCODEC_MSMPEG4_H */
  69.