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rv10enc.c
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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 
32 {
33  int full_frame= 0;
34 
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  if (s->mb_width * s->mb_height >= (1U << 12)) {
52  avpriv_report_missing_feature(s->avctx, "Encoding frames with %d (>= 4096) macroblocks",
53  s->mb_width * s->mb_height);
54  return AVERROR(ENOSYS);
55  }
56  put_bits(&s->pb, 6, 0); /* mb_x */
57  put_bits(&s->pb, 6, 0); /* mb_y */
58  put_bits(&s->pb, 12, s->mb_width * s->mb_height);
59  }
60 
61  put_bits(&s->pb, 3, 0); /* ignored */
62  return 0;
63 }
64 
66 
68  .name = "rv10",
69  .long_name = NULL_IF_CONFIG_SMALL("RealVideo 1.0"),
70  .type = AVMEDIA_TYPE_VIDEO,
71  .id = AV_CODEC_ID_RV10,
72  .priv_data_size = sizeof(MpegEncContext),
74  .encode2 = ff_mpv_encode_picture,
75  .close = ff_mpv_encode_end,
76  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
77  .priv_class = &rv10_class,
78 };