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 avpriv_set_pts_info(st, 64, time_unit, spu * 10000000);
89 st->codec->channels = bytestream_get_le16(&p);
90 p += 2; /* block_align */
91 st->codec->bit_rate = bytestream_get_le32(&p) * 8;
92 st->codec->sample_rate = time_unit ? spu * 10000000 / time_unit : 0;
93 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
94 if (size >= 56 && st->codec->codec_id == CODEC_ID_AAC) {
99 av_assert0(FF_INPUT_BUFFER_PADDING_SIZE <= 52);
101 st->codec->extradata_size = size;
102 st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
103 bytestream_get_buffer(&p, st->codec->extradata, size);
106 } else if (*p == 3) {
108 ff_vorbis_comment(s, &st->metadata, p+7, os->psize-8);
115 ogm_dshow_header(AVFormatContext *s, int idx)
117 struct ogg *ogg = s->priv_data;
118 struct ogg_stream *os = ogg->streams + idx;
119 AVStream *st = s->streams[idx];
120 uint8_t *p = os->buf + os->pstart;
131 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
132 st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
133 avpriv_set_pts_info(st, 64, AV_RL64(p + 164), 10000000);
134 st->codec->width = AV_RL32(p + 176);
135 st->codec->height = AV_RL32(p + 180);
136 } else if(t == 0x05589f81){
137 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
138 st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
139 st->codec->channels = AV_RL16(p + 126);
140 st->codec->sample_rate = AV_RL32(p + 128);
141 st->codec->bit_rate = AV_RL32(p + 132) * 8;
148 ogm_packet(AVFormatContext *s, int idx)
150 struct ogg *ogg = s->priv_data;
151 struct ogg_stream *os = ogg->streams + idx;
152 uint8_t *p = os->buf + os->pstart;
156 os->pflags |= AV_PKT_FLAG_KEY;
158 lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
159 os->pstart += lb + 1;
163 os->pduration += p[lb+1] << (lb*8);
168 const struct ogg_codec ff_ogm_video_codec = {
169 .magic = "\001video",
171 .header = ogm_header,
172 .packet = ogm_packet,
173 .granule_is_start = 1,
176 const struct ogg_codec ff_ogm_audio_codec = {
177 .magic = "\001audio",
179 .header = ogm_header,
180 .packet = ogm_packet,
181 .granule_is_start = 1,
184 const struct ogg_codec ff_ogm_text_codec = {
187 .header = ogm_header,
188 .packet = ogm_packet,
189 .granule_is_start = 1,
192 const struct ogg_codec ff_ogm_old_codec = {
193 .magic = "\001Direct Show Samples embedded in Ogg",
195 .header = ogm_dshow_header,
196 .packet = ogm_packet,
197 .granule_is_start = 1,