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];
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 if (st->codecpar->codec_id == AV_CODEC_ID_MPEG4)
61 st->need_parsing = AVSTREAM_PARSE_HEADERS;
62 } else if (bytestream2_peek_byte(&p) == 't') {
63 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
64 st->codecpar->codec_id = AV_CODEC_ID_TEXT;
65 bytestream2_skip(&p, 12);
67 uint8_t acid[5] = { 0 };
69 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
70 bytestream2_skip(&p, 8);
71 bytestream2_get_buffer(&p, acid, 4);
73 cid = strtol(acid, NULL, 16);
74 st->codecpar->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
75 // our parser completely breaks AAC in Ogg
76 if (st->codecpar->codec_id != AV_CODEC_ID_AAC)
77 st->need_parsing = AVSTREAM_PARSE_FULL;
80 size = bytestream2_get_le32(&p);
81 size = FFMIN(size, os->psize);
82 time_unit = bytestream2_get_le64(&p);
83 spu = bytestream2_get_le64(&p);
84 if (!time_unit || !spu) {
85 av_log(s, AV_LOG_ERROR, "Invalid timing values.\n");
86 return AVERROR_INVALIDDATA;
89 bytestream2_skip(&p, 4); /* default_len */
90 bytestream2_skip(&p, 8); /* buffersize + bits_per_sample */
92 if(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO){
93 st->codecpar->width = bytestream2_get_le32(&p);
94 st->codecpar->height = bytestream2_get_le32(&p);
95 avpriv_set_pts_info(st, 64, time_unit, spu * 10000000);
97 st->codecpar->channels = bytestream2_get_le16(&p);
98 bytestream2_skip(&p, 2); /* block_align */
99 st->codecpar->bit_rate = bytestream2_get_le32(&p) * 8;
100 st->codecpar->sample_rate = spu * 10000000 / time_unit;
101 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
102 if (size >= 56 && st->codecpar->codec_id == AV_CODEC_ID_AAC) {
103 bytestream2_skip(&p, 4);
107 av_assert0(AV_INPUT_BUFFER_PADDING_SIZE <= 52);
109 ff_alloc_extradata(st->codecpar, size);
110 bytestream2_get_buffer(&p, st->codecpar->extradata, st->codecpar->extradata_size);
113 } else if (bytestream2_peek_byte(&p) == 3) {
114 bytestream2_skip(&p, 7);
115 if (bytestream2_get_bytes_left(&p) > 1)
116 ff_vorbis_stream_comment(s, st, p.buffer, bytestream2_get_bytes_left(&p) - 1);
123 ogm_dshow_header(AVFormatContext *s, int idx)
125 struct ogg *ogg = s->priv_data;
126 struct ogg_stream *os = ogg->streams + idx;
127 AVStream *st = s->streams[idx];
128 uint8_t *p = os->buf + os->pstart;
137 return AVERROR_INVALIDDATA;
142 return AVERROR_INVALIDDATA;
144 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
145 st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
146 avpriv_set_pts_info(st, 64, AV_RL64(p + 164), 10000000);
147 st->codecpar->width = AV_RL32(p + 176);
148 st->codecpar->height = AV_RL32(p + 180);
149 } else if(t == 0x05589f81){
151 return AVERROR_INVALIDDATA;
153 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
154 st->codecpar->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
155 st->codecpar->channels = AV_RL16(p + 126);
156 st->codecpar->sample_rate = AV_RL32(p + 128);
157 st->codecpar->bit_rate = AV_RL32(p + 132) * 8;
164 ogm_packet(AVFormatContext *s, int idx)
166 struct ogg *ogg = s->priv_data;
167 struct ogg_stream *os = ogg->streams + idx;
168 uint8_t *p = os->buf + os->pstart;
172 os->pflags |= AV_PKT_FLAG_KEY;
174 lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
175 os->pstart += lb + 1;
179 os->pduration += p[lb+1] << (lb*8);
184 const struct ogg_codec ff_ogm_video_codec = {
185 .magic = "\001video",
187 .header = ogm_header,
188 .packet = ogm_packet,
189 .granule_is_start = 1,
193 const struct ogg_codec ff_ogm_audio_codec = {
194 .magic = "\001audio",
196 .header = ogm_header,
197 .packet = ogm_packet,
198 .granule_is_start = 1,
202 const struct ogg_codec ff_ogm_text_codec = {
205 .header = ogm_header,
206 .packet = ogm_packet,
207 .granule_is_start = 1,
211 const struct ogg_codec ff_ogm_old_codec = {
212 .magic = "\001Direct Show Samples embedded in Ogg",
214 .header = ogm_dshow_header,
215 .packet = ogm_packet,
216 .granule_is_start = 1,