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/avassert.h"
27 #include "libavutil/intreadwrite.h"
28 #include "libavcodec/get_bits.h"
29 #include "libavcodec/bytestream.h"
36 ogm_header(AVFormatContext *s, int idx)
38 struct ogg *ogg = s->priv_data;
39 struct ogg_stream *os = ogg->streams + idx;
40 AVStream *st = s->streams[idx];
41 const uint8_t *p = os->buf + os->pstart;
54 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
56 tag = bytestream_get_le32(&p);
57 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag);
58 st->codec->codec_tag = tag;
59 } else if (*p == 't') {
60 st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
61 st->codec->codec_id = CODEC_ID_TEXT;
66 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
68 bytestream_get_buffer(&p, acid, 4);
70 cid = strtol(acid, NULL, 16);
71 st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
72 // our parser completely breaks AAC in Ogg
73 if (st->codec->codec_id != CODEC_ID_AAC)
74 st->need_parsing = AVSTREAM_PARSE_FULL;
77 size = bytestream_get_le32(&p);
78 size = FFMIN(size, os->psize);
79 time_unit = bytestream_get_le64(&p);
80 spu = bytestream_get_le64(&p);
81 p += 4; /* default_len */
82 p += 8; /* buffersize + bits_per_sample */
84 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
85 st->codec->width = bytestream_get_le32(&p);
86 st->codec->height = bytestream_get_le32(&p);
87 st->codec->time_base.den = spu * 10000000;
88 st->codec->time_base.num = time_unit;
89 avpriv_set_pts_info(st, 64, st->codec->time_base.num, st->codec->time_base.den);
91 st->codec->channels = bytestream_get_le16(&p);
92 p += 2; /* block_align */
93 st->codec->bit_rate = bytestream_get_le32(&p) * 8;
94 st->codec->sample_rate = spu * 10000000 / time_unit;
95 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
96 if (size >= 56 && st->codec->codec_id == CODEC_ID_AAC) {
101 av_assert0(FF_INPUT_BUFFER_PADDING_SIZE <= 52);
103 st->codec->extradata_size = size;
104 st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
105 bytestream_get_buffer(&p, st->codec->extradata, size);
108 } else if (*p == 3) {
110 ff_vorbis_comment(s, &st->metadata, p+7, os->psize-8);
117 ogm_dshow_header(AVFormatContext *s, int idx)
119 struct ogg *ogg = s->priv_data;
120 struct ogg_stream *os = ogg->streams + idx;
121 AVStream *st = s->streams[idx];
122 uint8_t *p = os->buf + os->pstart;
133 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
134 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
135 st->codec->time_base.den = 10000000;
136 st->codec->time_base.num = AV_RL64(p + 164);
137 st->codec->width = AV_RL32(p + 176);
138 st->codec->height = AV_RL32(p + 180);
139 } else if(t == 0x05589f81){
140 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
141 st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
142 st->codec->channels = AV_RL16(p + 126);
143 st->codec->sample_rate = AV_RL32(p + 128);
144 st->codec->bit_rate = AV_RL32(p + 132) * 8;
151 ogm_packet(AVFormatContext *s, int idx)
153 struct ogg *ogg = s->priv_data;
154 struct ogg_stream *os = ogg->streams + idx;
155 uint8_t *p = os->buf + os->pstart;
159 os->pflags |= AV_PKT_FLAG_KEY;
161 lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
162 os->pstart += lb + 1;
166 os->pduration += p[lb+1] << (lb*8);
171 const struct ogg_codec ff_ogm_video_codec = {
172 .magic = "\001video",
174 .header = ogm_header,
175 .packet = ogm_packet,
176 .granule_is_start = 1,
179 const struct ogg_codec ff_ogm_audio_codec = {
180 .magic = "\001audio",
182 .header = ogm_header,
183 .packet = ogm_packet,
184 .granule_is_start = 1,
187 const struct ogg_codec ff_ogm_text_codec = {
190 .header = ogm_header,
191 .packet = ogm_packet,
192 .granule_is_start = 1,
195 const struct ogg_codec ff_ogm_old_codec = {
196 .magic = "\001Direct Show Samples embedded in Ogg",
198 .header = ogm_dshow_header,
199 .packet = ogm_packet,
200 .granule_is_start = 1,