blob: 81fb4fc1bad7635f2ae97425e1e4e37304e3a101
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 |
25 | * RV20 encoder |
26 | */ |
27 | |
28 | #include "mpegvideo.h" |
29 | #include "mpegvideodata.h" |
30 | #include "h263.h" |
31 | #include "h263data.h" |
32 | #include "put_bits.h" |
33 | #include "rv10.h" |
34 | |
35 | void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number){ |
36 | put_bits(&s->pb, 2, s->pict_type); //I 0 vs. 1 ? |
37 | put_bits(&s->pb, 1, 0); /* unknown bit */ |
38 | put_bits(&s->pb, 5, s->qscale); |
39 | |
40 | put_sbits(&s->pb, 8, picture_number); //FIXME wrong, but correct is not known |
41 | s->mb_x= s->mb_y= 0; |
42 | ff_h263_encode_mba(s); |
43 | |
44 | put_bits(&s->pb, 1, s->no_rounding); |
45 | |
46 | av_assert0(s->f_code == 1); |
47 | av_assert0(s->unrestricted_mv == 0); |
48 | av_assert0(s->alt_inter_vlc == 0); |
49 | av_assert0(s->umvplus == 0); |
50 | av_assert0(s->modified_quant==1); |
51 | av_assert0(s->loop_filter==1); |
52 | |
53 | s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I; |
54 | if(s->h263_aic){ |
55 | s->y_dc_scale_table= |
56 | s->c_dc_scale_table= ff_aic_dc_scale_table; |
57 | }else{ |
58 | s->y_dc_scale_table= |
59 | s->c_dc_scale_table= ff_mpeg1_dc_scale_table; |
60 | } |
61 | } |
62 | |
63 | static const AVClass rv20_class = { |
64 | .class_name = "rv20 encoder", |
65 | .item_name = av_default_item_name, |
66 | .option = ff_mpv_generic_options, |
67 | .version = LIBAVUTIL_VERSION_INT, |
68 | }; |
69 | |
70 | AVCodec ff_rv20_encoder = { |
71 | .name = "rv20", |
72 | .long_name = NULL_IF_CONFIG_SMALL("RealVideo 2.0"), |
73 | .type = AVMEDIA_TYPE_VIDEO, |
74 | .id = AV_CODEC_ID_RV20, |
75 | .priv_data_size = sizeof(MpegEncContext), |
76 | .init = ff_mpv_encode_init, |
77 | .encode2 = ff_mpv_encode_picture, |
78 | .close = ff_mpv_encode_end, |
79 | .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, |
80 | .priv_class = &rv20_class, |
81 | }; |
82 |