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 "libavutil/intreadwrite.h"
29 #include "libavcodec/bytestream.h"
37 ogm_header(AVFormatContext *s, int idx)
39 struct ogg *ogg = s->priv_data;
40 struct ogg_stream *os = ogg->streams + idx;
41 AVStream *st = s->streams[idx];
46 bytestream2_init(&p, os->buf + os->pstart, os->psize);
47 if (!(bytestream2_peek_byte(&p) & 1))
50 if (bytestream2_peek_byte(&p) == 1) {
51 bytestream2_skip(&p, 1);
53 if (bytestream2_peek_byte(&p) == 'v'){
55 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
56 bytestream2_skip(&p, 8);
57 tag = bytestream2_get_le32(&p);
58 st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag);
59 st->codecpar->codec_tag = tag;
60 } else if (bytestream2_peek_byte(&p) == 't') {
61 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
62 st->codecpar->codec_id = AV_CODEC_ID_TEXT;
63 bytestream2_skip(&p, 12);
65 uint8_t acid[5] = { 0 };
67 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
68 bytestream2_skip(&p, 8);
69 bytestream2_get_buffer(&p, acid, 4);
71 cid = strtol(acid, NULL, 16);
72 st->codecpar->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
73 st->need_parsing = AVSTREAM_PARSE_FULL;
76 bytestream2_skip(&p, 4); /* useless size field */
78 time_unit = bytestream2_get_le64(&p);
79 spu = bytestream2_get_le64(&p);
80 if (!time_unit || !spu) {
81 av_log(s, AV_LOG_ERROR, "Invalid timing values.\n");
82 return AVERROR_INVALIDDATA;
85 bytestream2_skip(&p, 4); /* default_len */
86 bytestream2_skip(&p, 8); /* buffersize + bits_per_sample */
88 if(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO){
89 st->codecpar->width = bytestream2_get_le32(&p);
90 st->codecpar->height = bytestream2_get_le32(&p);
91 avpriv_set_pts_info(st, 64, time_unit, spu * 10000000);
93 st->codecpar->channels = bytestream2_get_le16(&p);
94 bytestream2_skip(&p, 2); /* block_align */
95 st->codecpar->bit_rate = bytestream2_get_le32(&p) * 8;
96 st->codecpar->sample_rate = spu * 10000000 / time_unit;
97 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
99 } else if (bytestream2_peek_byte(&p) == 3) {
100 bytestream2_skip(&p, 7);
101 if (bytestream2_get_bytes_left(&p) > 1)
102 ff_vorbis_stream_comment(s, st, p.buffer, bytestream2_get_bytes_left(&p) - 1);
109 ogm_dshow_header(AVFormatContext *s, int idx)
111 struct ogg *ogg = s->priv_data;
112 struct ogg_stream *os = ogg->streams + idx;
113 AVStream *st = s->streams[idx];
114 uint8_t *p = os->buf + os->pstart;
125 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
126 st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
127 avpriv_set_pts_info(st, 64, AV_RL64(p + 164), 10000000);
128 st->codecpar->width = AV_RL32(p + 176);
129 st->codecpar->height = AV_RL32(p + 180);
130 } else if(t == 0x05589f81){
131 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
132 st->codecpar->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
133 st->codecpar->channels = AV_RL16(p + 126);
134 st->codecpar->sample_rate = AV_RL32(p + 128);
135 st->codecpar->bit_rate = AV_RL32(p + 132) * 8;
142 ogm_packet(AVFormatContext *s, int idx)
144 struct ogg *ogg = s->priv_data;
145 struct ogg_stream *os = ogg->streams + idx;
146 uint8_t *p = os->buf + os->pstart;
150 os->pflags |= AV_PKT_FLAG_KEY;
152 lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
153 os->pstart += lb + 1;
157 os->pduration += p[lb+1] << (lb*8);
162 const struct ogg_codec ff_ogm_video_codec = {
163 .magic = "\001video",
165 .header = ogm_header,
166 .packet = ogm_packet,
167 .granule_is_start = 1,
171 const struct ogg_codec ff_ogm_audio_codec = {
172 .magic = "\001audio",
174 .header = ogm_header,
175 .packet = ogm_packet,
176 .granule_is_start = 1,
180 const struct ogg_codec ff_ogm_text_codec = {
183 .header = ogm_header,
184 .packet = ogm_packet,
185 .granule_is_start = 1,
189 const struct ogg_codec ff_ogm_old_codec = {
190 .magic = "\001Direct Show Samples embedded in Ogg",
192 .header = ogm_dshow_header,
193 .packet = ogm_packet,
194 .granule_is_start = 1,