libavcodec/rv20enc.c

   1 /*
   2  * RV20 encoder
   3  * Copyright (c) 2000,2001 Fabrice Bellard
   4  * Copyright (c) 2002-2004 Michael Niedermayer
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /**
  24  * @file libavcodec/rv20enc.c
  25  * RV20 encoder
  26  */
  27
  28 #include "mpegvideo.h"
  29 #include "put_bits.h"
  30
  31 void rv20_encode_picture_header(MpegEncContext *s, int picture_number){
  32     put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ?
  33     put_bits(&s->pb, 1, 0);     /* unknown bit */
  34     put_bits(&s->pb, 5, s->qscale);
  35
  36     put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known
  37     s->mb_x= s->mb_y= 0;
  38     ff_h263_encode_mba(s);
  39
  40     put_bits(&s->pb, 1, s->no_rounding);
  41
  42     assert(s->f_code == 1);
  43     assert(s->unrestricted_mv == 1);
  44     assert(s->alt_inter_vlc == 0);
  45     assert(s->umvplus == 0);
  46     assert(s->modified_quant==1);
  47     assert(s->loop_filter==1);
  48
  49     s->h263_aic= s->pict_type == FF_I_TYPE;
  50     if(s->h263_aic){
  51         s->y_dc_scale_table=
  52         s->c_dc_scale_table= ff_aic_dc_scale_table;
  53     }else{
  54         s->y_dc_scale_table=
  55         s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
  56     }
  57 }
  58
  59 AVCodec rv20_encoder = {
  60     "rv20",
  61     CODEC_TYPE_VIDEO,
  62     CODEC_ID_RV20,
  63     sizeof(MpegEncContext),
  64     MPV_encode_init,
  65     MPV_encode_picture,
  66     MPV_encode_end,
  67     .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
  68     .long_name= NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
  69 };