/src/ffmpeg/libavcodec/rv10enc.c
Line | Count | Source |
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 "codec_internal.h" |
29 | | #include "mpegvideo.h" |
30 | | #include "mpegvideoenc.h" |
31 | | #include "put_bits.h" |
32 | | #include "rv10enc.h" |
33 | | |
34 | | int ff_rv10_encode_picture_header(MPVMainEncContext *const m) |
35 | 367 | { |
36 | 367 | MPVEncContext *const s = &m->s; |
37 | 367 | int full_frame= 0; |
38 | | |
39 | 367 | put_bits_assume_flushed(&s->pb); |
40 | | |
41 | 367 | put_bits(&s->pb, 1, 1); /* marker */ |
42 | | |
43 | 367 | put_bits(&s->pb, 1, (s->c.pict_type == AV_PICTURE_TYPE_P)); |
44 | | |
45 | 367 | put_bits(&s->pb, 1, 0); /* not PB-mframe */ |
46 | | |
47 | 367 | put_bits(&s->pb, 5, s->c.qscale); |
48 | | |
49 | 367 | if (s->c.pict_type == AV_PICTURE_TYPE_I) { |
50 | | /* specific MPEG like DC coding not used */ |
51 | 367 | } |
52 | | /* if multiple packets per frame are sent, the position at which |
53 | | to display the macroblocks is coded here */ |
54 | 367 | if(!full_frame){ |
55 | 367 | if (s->c.mb_width * s->c.mb_height >= (1U << 12)) { |
56 | 0 | avpriv_report_missing_feature(s->c.avctx, "Encoding frames with %d (>= 4096) macroblocks", |
57 | 0 | s->c.mb_width * s->c.mb_height); |
58 | 0 | return AVERROR(ENOSYS); |
59 | 0 | } |
60 | 367 | put_bits(&s->pb, 6, 0); /* mb_x */ |
61 | 367 | put_bits(&s->pb, 6, 0); /* mb_y */ |
62 | 367 | put_bits(&s->pb, 12, s->c.mb_width * s->c.mb_height); |
63 | 367 | } |
64 | | |
65 | 367 | put_bits(&s->pb, 3, 0); /* ignored */ |
66 | 367 | return 0; |
67 | 367 | } |
68 | | |
69 | | const FFCodec ff_rv10_encoder = { |
70 | | .p.name = "rv10", |
71 | | CODEC_LONG_NAME("RealVideo 1.0"), |
72 | | .p.type = AVMEDIA_TYPE_VIDEO, |
73 | | .p.id = AV_CODEC_ID_RV10, |
74 | | .p.priv_class = &ff_mpv_enc_class, |
75 | | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, |
76 | | .priv_data_size = sizeof(MPVMainEncContext), |
77 | | .init = ff_mpv_encode_init, |
78 | | FF_CODEC_ENCODE_CB(ff_mpv_encode_picture), |
79 | | .close = ff_mpv_encode_end, |
80 | | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, |
81 | | CODEC_PIXFMTS(AV_PIX_FMT_YUV420P), |
82 | | .color_ranges = AVCOL_RANGE_MPEG, |
83 | | }; |