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];
47 bytestream2_init(&p, os->buf + os->pstart, os->psize);
48 if (!(bytestream2_peek_byte(&p) & 1))
51 if (bytestream2_peek_byte(&p) == 1) {
52 bytestream2_skip(&p, 1);
54 if (bytestream2_peek_byte(&p) == 'v'){
56 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
57 bytestream2_skip(&p, 8);
58 tag = bytestream2_get_le32(&p);
59 st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag);
60 st->codecpar->codec_tag = tag;
61 if (st->codecpar->codec_id == AV_CODEC_ID_MPEG4)
62 st->need_parsing = AVSTREAM_PARSE_HEADERS;
63 } else if (bytestream2_peek_byte(&p) == 't') {
64 st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
65 st->codecpar->codec_id = AV_CODEC_ID_TEXT;
66 bytestream2_skip(&p, 12);
68 uint8_t acid[5] = { 0 };
70 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
71 bytestream2_skip(&p, 8);
72 bytestream2_get_buffer(&p, acid, 4);
74 cid = strtol(acid, NULL, 16);
75 st->codecpar->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
76 // our parser completely breaks AAC in Ogg
77 if (st->codecpar->codec_id != AV_CODEC_ID_AAC)
78 st->need_parsing = AVSTREAM_PARSE_FULL;
81 size = bytestream2_get_le32(&p);
82 size = FFMIN(size, os->psize);
83 time_unit = bytestream2_get_le64(&p);
84 spu = bytestream2_get_le64(&p);
85 if (!time_unit || !spu) {
86 av_log(s, AV_LOG_ERROR, "Invalid timing values.\n");
87 return AVERROR_INVALIDDATA;
90 bytestream2_skip(&p, 4); /* default_len */
91 bytestream2_skip(&p, 8); /* buffersize + bits_per_sample */
93 if(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO){
94 st->codecpar->width = bytestream2_get_le32(&p);
95 st->codecpar->height = bytestream2_get_le32(&p);
96 avpriv_set_pts_info(st, 64, time_unit, spu * 10000000);
98 st->codecpar->channels = bytestream2_get_le16(&p);
99 bytestream2_skip(&p, 2); /* block_align */
100 st->codecpar->bit_rate = bytestream2_get_le32(&p) * 8;
101 st->codecpar->sample_rate = spu * 10000000 / time_unit;
102 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
103 if (size >= 56 && st->codecpar->codec_id == AV_CODEC_ID_AAC) {
104 bytestream2_skip(&p, 4);
109 if (bytestream2_get_bytes_left(&p) < size)
110 return AVERROR_INVALIDDATA;
111 av_freep(&st->codecpar->extradata);
112 if (ff_alloc_extradata(st->codecpar, size) < 0)
113 return AVERROR(ENOMEM);
114 bytestream2_get_buffer(&p, st->codecpar->extradata, st->codecpar->extradata_size);
117 } else if (bytestream2_peek_byte(&p) == 3) {
118 bytestream2_skip(&p, 7);
119 if (bytestream2_get_bytes_left(&p) > 1)
120 ff_vorbis_stream_comment(s, st, p.buffer, bytestream2_get_bytes_left(&p) - 1);
127 ogm_dshow_header(AVFormatContext *s, int idx)
129 struct ogg *ogg = s->priv_data;
130 struct ogg_stream *os = ogg->streams + idx;
131 AVStream *st = s->streams[idx];
132 uint8_t *p = os->buf + os->pstart;
141 return AVERROR_INVALIDDATA;
146 return AVERROR_INVALIDDATA;
148 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
149 st->codecpar->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
150 avpriv_set_pts_info(st, 64, AV_RL64(p + 164), 10000000);
151 st->codecpar->width = AV_RL32(p + 176);
152 st->codecpar->height = AV_RL32(p + 180);
153 } else if(t == 0x05589f81){
155 return AVERROR_INVALIDDATA;
157 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
158 st->codecpar->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
159 st->codecpar->channels = AV_RL16(p + 126);
160 st->codecpar->sample_rate = AV_RL32(p + 128);
161 st->codecpar->bit_rate = AV_RL32(p + 132) * 8;
168 ogm_packet(AVFormatContext *s, int idx)
170 struct ogg *ogg = s->priv_data;
171 struct ogg_stream *os = ogg->streams + idx;
172 uint8_t *p = os->buf + os->pstart;
176 os->pflags |= AV_PKT_FLAG_KEY;
178 lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
179 if (os->psize < lb + 1)
180 return AVERROR_INVALIDDATA;
182 os->pstart += lb + 1;
186 os->pduration += (uint64_t)p[lb+1] << (lb*8);
191 const struct ogg_codec ff_ogm_video_codec = {
192 .magic = "\001video",
194 .header = ogm_header,
195 .packet = ogm_packet,
196 .granule_is_start = 1,
200 const struct ogg_codec ff_ogm_audio_codec = {
201 .magic = "\001audio",
203 .header = ogm_header,
204 .packet = ogm_packet,
205 .granule_is_start = 1,
209 const struct ogg_codec ff_ogm_text_codec = {
212 .header = ogm_header,
213 .packet = ogm_packet,
214 .granule_is_start = 1,
218 const struct ogg_codec ff_ogm_old_codec = {
219 .magic = "\001Direct Show Samples embedded in Ogg",
221 .header = ogm_dshow_header,
222 .packet = ogm_packet,
223 .granule_is_start = 1,