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.
26 #include "libavutil/intreadwrite.h"
27 #include "libavcodec/get_bits.h"
28 #include "libavcodec/bytestream.h"
34 ogm_header(AVFormatContext *s, int idx)
36 struct ogg *ogg = s->priv_data;
37 struct ogg_stream *os = ogg->streams + idx;
38 AVStream *st = s->streams[idx];
39 const uint8_t *p = os->buf + os->pstart;
52 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
54 tag = bytestream_get_le32(&p);
55 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag);
56 st->codec->codec_tag = tag;
57 } else if (*p == 't') {
58 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
59 st->codec->codec_id = CODEC_ID_TEXT;
64 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
66 bytestream_get_buffer(&p, acid, 4);
68 cid = strtol(acid, NULL, 16);
69 st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
70 st->need_parsing = AVSTREAM_PARSE_FULL;
73 p += 4; /* useless size field */
75 time_unit = bytestream_get_le64(&p);
76 spu = bytestream_get_le64(&p);
77 default_len = bytestream_get_le32(&p);
79 p += 8; /* buffersize + bits_per_sample */
81 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
82 st->codec->width = bytestream_get_le32(&p);
83 st->codec->height = bytestream_get_le32(&p);
84 st->codec->time_base.den = spu * 10000000;
85 st->codec->time_base.num = time_unit;
86 st->time_base = st->codec->time_base;
88 st->codec->channels = bytestream_get_le16(&p);
89 p += 2; /* block_align */
90 st->codec->bit_rate = bytestream_get_le32(&p) * 8;
91 st->codec->sample_rate = spu * 10000000 / time_unit;
92 st->time_base.num = 1;
93 st->time_base.den = st->codec->sample_rate;
97 ff_vorbis_comment(s, &st->metadata, p+7, os->psize-8);
104 ogm_dshow_header(AVFormatContext *s, int idx)
106 struct ogg *ogg = s->priv_data;
107 struct ogg_stream *os = ogg->streams + idx;
108 AVStream *st = s->streams[idx];
109 uint8_t *p = os->buf + os->pstart;
120 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
121 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
122 st->codec->time_base.den = 10000000;
123 st->codec->time_base.num = AV_RL64(p + 164);
124 st->codec->width = AV_RL32(p + 176);
125 st->codec->height = AV_RL32(p + 180);
126 } else if(t == 0x05589f81){
127 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
128 st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
129 st->codec->channels = AV_RL16(p + 126);
130 st->codec->sample_rate = AV_RL32(p + 128);
131 st->codec->bit_rate = AV_RL32(p + 132) * 8;
138 ogm_packet(AVFormatContext *s, int idx)
140 struct ogg *ogg = s->priv_data;
141 struct ogg_stream *os = ogg->streams + idx;
142 uint8_t *p = os->buf + os->pstart;
146 os->pflags |= AV_PKT_FLAG_KEY;
148 lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
149 os->pstart += lb + 1;
153 os->pduration += p[lb+1] << (lb*8);
158 const struct ogg_codec ff_ogm_video_codec = {
159 .magic = "\001video",
161 .header = ogm_header,
162 .packet = ogm_packet,
163 .granule_is_start = 1,
166 const struct ogg_codec ff_ogm_audio_codec = {
167 .magic = "\001audio",
169 .header = ogm_header,
170 .packet = ogm_packet,
171 .granule_is_start = 1,
174 const struct ogg_codec ff_ogm_text_codec = {
177 .header = ogm_header,
178 .packet = ogm_packet,
179 .granule_is_start = 1,
182 const struct ogg_codec ff_ogm_old_codec = {
183 .magic = "\001Direct Show Samples embedded in Ogg",
185 .header = ogm_dshow_header,
186 .packet = ogm_packet,
187 .granule_is_start = 1,