libavcodec/rv20enc.c
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 /*
  * RV20 encoder
  * Copyright (c) 2000,2001 Fabrice Bellard
  * Copyright (c) 2002-2004 Michael Niedermayer
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
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  * @file
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  * RV20 encoder
  */
 
 #include "mpegvideo.h"
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 #include "h263.h"
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 #include "put_bits.h"
 
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 void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number){
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     put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ?
     put_bits(&s->pb, 1, 0);     /* unknown bit */
     put_bits(&s->pb, 5, s->qscale);
 
     put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known
     s->mb_x= s->mb_y= 0;
     ff_h263_encode_mba(s);
 
     put_bits(&s->pb, 1, s->no_rounding);
 
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     av_assert0(s->f_code == 1);
     av_assert0(s->unrestricted_mv == 0);
     av_assert0(s->alt_inter_vlc == 0);
     av_assert0(s->umvplus == 0);
     av_assert0(s->modified_quant==1);
     av_assert0(s->loop_filter==1);
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     s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I;
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     if(s->h263_aic){
         s->y_dc_scale_table=
         s->c_dc_scale_table= ff_aic_dc_scale_table;
     }else{
         s->y_dc_scale_table=
         s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
     }
 }
 
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 FF_MPV_GENERIC_CLASS(rv20)
 
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 AVCodec ff_rv20_encoder = {
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     .name           = "rv20",
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     .long_name      = NULL_IF_CONFIG_SMALL("RealVideo 2.0"),
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     .type           = AVMEDIA_TYPE_VIDEO,
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     .id             = AV_CODEC_ID_RV20,
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     .priv_data_size = sizeof(MpegEncContext),
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     .init           = ff_mpv_encode_init,
     .encode2        = ff_mpv_encode_picture,
     .close          = ff_mpv_encode_end,
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     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
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     .priv_class     = &rv20_class,
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 };