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  1. /*
  2.  * RV10 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
  25.  * RV10 encoder
  26.  */
  27.  
  28. #include "mpegvideo.h"
  29. #include "put_bits.h"
  30.  
  31. void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number)
  32. {
  33.     int full_frame= 0;
  34.  
  35.     avpriv_align_put_bits(&s->pb);
  36.  
  37.     put_bits(&s->pb, 1, 1);     /* marker */
  38.  
  39.     put_bits(&s->pb, 1, (s->pict_type == AV_PICTURE_TYPE_P));
  40.  
  41.     put_bits(&s->pb, 1, 0);     /* not PB frame */
  42.  
  43.     put_bits(&s->pb, 5, s->qscale);
  44.  
  45.     if (s->pict_type == AV_PICTURE_TYPE_I) {
  46.         /* specific MPEG like DC coding not used */
  47.     }
  48.     /* if multiple packets per frame are sent, the position at which
  49.        to display the macroblocks is coded here */
  50.     if(!full_frame){
  51.         put_bits(&s->pb, 6, 0); /* mb_x */
  52.         put_bits(&s->pb, 6, 0); /* mb_y */
  53.         put_bits(&s->pb, 12, s->mb_width * s->mb_height);
  54.     }
  55.  
  56.     put_bits(&s->pb, 3, 0);     /* ignored */
  57. }
  58.  
  59. FF_MPV_GENERIC_CLASS(rv10)
  60.  
  61. AVCodec ff_rv10_encoder = {
  62.     .name           = "rv10",
  63.     .long_name      = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
  64.     .type           = AVMEDIA_TYPE_VIDEO,
  65.     .id             = AV_CODEC_ID_RV10,
  66.     .priv_data_size = sizeof(MpegEncContext),
  67.     .init           = ff_MPV_encode_init,
  68.     .encode2        = ff_MPV_encode_picture,
  69.     .close          = ff_MPV_encode_end,
  70.     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
  71.     .priv_class     = &rv10_class,
  72. };
  73.