2 Copyright (C) 2005 Michael Ahlberg, Måns Rullgård
4 Permission is hereby granted, free of charge, to any person
5 obtaining a copy of this software and associated documentation
6 files (the "Software"), to deal in the Software without
7 restriction, including without limitation the rights to use, copy,
8 modify, merge, publish, distribute, sublicense, and/or sell copies
9 of the Software, and to permit persons to whom the Software is
10 furnished to do so, subject to the following conditions:
12 The above copyright notice and this permission notice shall be
13 included in all copies or substantial portions of the Software.
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 DEALINGS IN THE SOFTWARE.
27 #include "bitstream.h"
28 #include "bytestream.h"
29 #include "intreadwrite.h"
34 ogm_header(AVFormatContext *s, int idx)
36 ogg_t *ogg = s->priv_data;
37 ogg_stream_t *os = ogg->streams + idx;
38 AVStream *st = s->streams[idx];
39 uint8_t *p = os->buf + os->pstart;
53 st->codec->codec_type = CODEC_TYPE_VIDEO;
55 tag = bytestream_get_le32(&p);
56 st->codec->codec_id = codec_get_id(codec_bmp_tags, tag);
57 st->codec->codec_tag = tag;
61 st->codec->codec_type = CODEC_TYPE_AUDIO;
63 bytestream_get_buffer(&p, acid, 4);
65 cid = strtol(acid, NULL, 16);
66 st->codec->codec_id = codec_get_id(codec_wav_tags, cid);
69 p += 4; /* useless size field */
71 time_unit = bytestream_get_le64(&p);
72 spu = bytestream_get_le64(&p);
73 default_len = bytestream_get_le32(&p);
75 p += 8; /* buffersize + bits_per_sample */
77 if(st->codec->codec_type == CODEC_TYPE_VIDEO){
78 st->codec->width = bytestream_get_le32(&p);
79 st->codec->height = bytestream_get_le32(&p);
80 st->codec->time_base.den = spu * 10000000;
81 st->codec->time_base.num = time_unit;
82 st->time_base = st->codec->time_base;
84 st->codec->channels = bytestream_get_le16(&p);
85 p += 2; /* block_align */
86 st->codec->bit_rate = bytestream_get_le32(&p) * 8;
87 st->codec->sample_rate = spu * 10000000 / time_unit;
88 st->time_base.num = 1;
89 st->time_base.den = st->codec->sample_rate;
96 ogm_dshow_header(AVFormatContext *s, int idx)
98 ogg_t *ogg = s->priv_data;
99 ogg_stream_t *os = ogg->streams + idx;
100 AVStream *st = s->streams[idx];
101 uint8_t *p = os->buf + os->pstart;
112 st->codec->codec_type = CODEC_TYPE_VIDEO;
113 st->codec->codec_id = codec_get_id(codec_bmp_tags, AV_RL32(p + 68));
114 st->codec->time_base.den = 10000000;
115 st->codec->time_base.num = AV_RL64(p + 164);
116 st->codec->width = AV_RL32(p + 176);
117 st->codec->height = AV_RL32(p + 180);
118 } else if(t == 0x05589f81){
119 st->codec->codec_type = CODEC_TYPE_AUDIO;
120 st->codec->codec_id = codec_get_id(codec_wav_tags, AV_RL16(p + 124));
121 st->codec->channels = AV_RL16(p + 126);
122 st->codec->sample_rate = AV_RL32(p + 128);
123 st->codec->bit_rate = AV_RL32(p + 132) * 8;
130 ogm_packet(AVFormatContext *s, int idx)
132 ogg_t *ogg = s->priv_data;
133 ogg_stream_t *os = ogg->streams + idx;
134 uint8_t *p = os->buf + os->pstart;
137 lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
138 os->pstart += lb + 1;
144 ogg_codec_t ogm_video_codec = {
145 .magic = "\001video",
147 .header = ogm_header,
151 ogg_codec_t ogm_audio_codec = {
152 .magic = "\001audio",
154 .header = ogm_header,
158 ogg_codec_t ogm_old_codec = {
159 .magic = "\001Direct Show Samples embedded in Ogg",
161 .header = ogm_dshow_header,