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/avassert.h"
28 #include "libavutil/intreadwrite.h"
30 #include "libavcodec/bytestream.h"
38 ogm_header(AVFormatContext *s, int idx)
40 struct ogg *ogg = s->priv_data;
41 struct ogg_stream *os = ogg->streams + idx;
42 AVStream *st = s->streams[idx];
48 bytestream2_init(&p, os->buf + os->pstart, os->psize);
49 if (!(bytestream2_peek_byte(&p) & 1))
52 if (bytestream2_peek_byte(&p) == 1) {
53 bytestream2_skip(&p, 1);
55 if (bytestream2_peek_byte(&p) == 'v'){
57 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
58 bytestream2_skip(&p, 8);
59 tag = bytestream2_get_le32(&p);
60 st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag);
61 st->codecpar->codec_tag = tag;
62 if (st->codecpar->codec_id == AV_CODEC_ID_MPEG4)
63 st->need_parsing = AVSTREAM_PARSE_HEADERS;
64 } else if (bytestream2_peek_byte(&p) == 't') {
65 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
66 st->codecpar->codec_id = AV_CODEC_ID_TEXT;
67 bytestream2_skip(&p, 12);
69 uint8_t acid[5] = { 0 };
71 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
72 bytestream2_skip(&p, 8);
73 bytestream2_get_buffer(&p, acid, 4);
75 cid = strtol(acid, NULL, 16);
76 st->codecpar->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
77 // our parser completely breaks AAC in Ogg
78 if (st->codecpar->codec_id != AV_CODEC_ID_AAC)
79 st->need_parsing = AVSTREAM_PARSE_FULL;
82 size = bytestream2_get_le32(&p);
83 size = FFMIN(size, os->psize);
84 time_unit = bytestream2_get_le64(&p);
85 spu = bytestream2_get_le64(&p);
86 if (!time_unit || !spu) {
87 av_log(s, AV_LOG_ERROR, "Invalid timing values.\n");
88 return AVERROR_INVALIDDATA;
91 bytestream2_skip(&p, 4); /* default_len */
92 bytestream2_skip(&p, 8); /* buffersize + bits_per_sample */
94 if(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO){
95 st->codecpar->width = bytestream2_get_le32(&p);
96 st->codecpar->height = bytestream2_get_le32(&p);
97 avpriv_set_pts_info(st, 64, time_unit, spu * 10000000);
99 st->codecpar->channels = bytestream2_get_le16(&p);
100 bytestream2_skip(&p, 2); /* block_align */
101 st->codecpar->bit_rate = bytestream2_get_le32(&p) * 8;
102 st->codecpar->sample_rate = spu * 10000000 / time_unit;
103 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
104 if (size >= 56 && st->codecpar->codec_id == AV_CODEC_ID_AAC) {
105 bytestream2_skip(&p, 4);
109 av_assert0(AV_INPUT_BUFFER_PADDING_SIZE <= 52);
111 ff_alloc_extradata(st->codecpar, size);
112 bytestream2_get_buffer(&p, st->codecpar->extradata, st->codecpar->extradata_size);
115 } else if (bytestream2_peek_byte(&p) == 3) {
116 bytestream2_skip(&p, 7);
117 if (bytestream2_get_bytes_left(&p) > 1)
118 ff_vorbis_stream_comment(s, st, p.buffer, bytestream2_get_bytes_left(&p) - 1);
125 ogm_dshow_header(AVFormatContext *s, int idx)
127 struct ogg *ogg = s->priv_data;
128 struct ogg_stream *os = ogg->streams + idx;
129 AVStream *st = s->streams[idx];
130 uint8_t *p = os->buf + os->pstart;
139 return AVERROR_INVALIDDATA;
144 return AVERROR_INVALIDDATA;
146 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
147 st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
148 avpriv_set_pts_info(st, 64, AV_RL64(p + 164), 10000000);
149 st->codecpar->width = AV_RL32(p + 176);
150 st->codecpar->height = AV_RL32(p + 180);
151 } else if(t == 0x05589f81){
153 return AVERROR_INVALIDDATA;
155 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
156 st->codecpar->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
157 st->codecpar->channels = AV_RL16(p + 126);
158 st->codecpar->sample_rate = AV_RL32(p + 128);
159 st->codecpar->bit_rate = AV_RL32(p + 132) * 8;
166 ogm_packet(AVFormatContext *s, int idx)
168 struct ogg *ogg = s->priv_data;
169 struct ogg_stream *os = ogg->streams + idx;
170 uint8_t *p = os->buf + os->pstart;
174 os->pflags |= AV_PKT_FLAG_KEY;
176 lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
177 os->pstart += lb + 1;
181 os->pduration += p[lb+1] << (lb*8);
186 const struct ogg_codec ff_ogm_video_codec = {
187 .magic = "\001video",
189 .header = ogm_header,
190 .packet = ogm_packet,
191 .granule_is_start = 1,
195 const struct ogg_codec ff_ogm_audio_codec = {
196 .magic = "\001audio",
198 .header = ogm_header,
199 .packet = ogm_packet,
200 .granule_is_start = 1,
204 const struct ogg_codec ff_ogm_text_codec = {
207 .header = ogm_header,
208 .packet = ogm_packet,
209 .granule_is_start = 1,
213 const struct ogg_codec ff_ogm_old_codec = {
214 .magic = "\001Direct Show Samples embedded in Ogg",
216 .header = ogm_dshow_header,
217 .packet = ogm_packet,
218 .granule_is_start = 1,