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oggparseogm.c
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1 /**
2  Copyright (C) 2005 Michael Ahlberg, Måns Rullgård
3 
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:
11 
12  The above copyright notice and this permission notice shall be
13  included in all copies or substantial portions of the Software.
14 
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.
23 **/
24 
25 #include <stdlib.h>
26 
27 #include "libavutil/intreadwrite.h"
28 
29 #include "libavcodec/bytestream.h"
30 
31 #include "avformat.h"
32 #include "internal.h"
33 #include "oggdec.h"
34 #include "riff.h"
35 
36 static int
38 {
39  struct ogg *ogg = s->priv_data;
40  struct ogg_stream *os = ogg->streams + idx;
41  AVStream *st = s->streams[idx];
43  uint64_t time_unit;
44  uint64_t spu;
45  uint32_t size;
46 
47  bytestream2_init(&p, os->buf + os->pstart, os->psize);
48  if (!(bytestream2_peek_byte(&p) & 1))
49  return 0;
50 
51  if (bytestream2_peek_byte(&p) == 1) {
52  bytestream2_skip(&p, 1);
53 
54  if (bytestream2_peek_byte(&p) == 'v'){
55  int tag;
57  bytestream2_skip(&p, 8);
58  tag = bytestream2_get_le32(&p);
60  st->codecpar->codec_tag = tag;
63  } else if (bytestream2_peek_byte(&p) == 't') {
66  bytestream2_skip(&p, 12);
67  } else {
68  uint8_t acid[5] = { 0 };
69  int cid;
71  bytestream2_skip(&p, 8);
72  bytestream2_get_buffer(&p, acid, 4);
73  acid[4] = 0;
74  cid = strtol(acid, NULL, 16);
76  // our parser completely breaks AAC in Ogg
77  if (st->codecpar->codec_id != AV_CODEC_ID_AAC)
79  }
80 
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;
88  }
89 
90  bytestream2_skip(&p, 4); /* default_len */
91  bytestream2_skip(&p, 8); /* buffersize + bits_per_sample */
92 
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);
97  } else {
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);
105  size -= 4;
106  }
107  if (size > 52) {
108  size -= 52;
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);
115  }
116  }
117  } else if (bytestream2_peek_byte(&p) == 3) {
118  bytestream2_skip(&p, 7);
119  if (bytestream2_get_bytes_left(&p) > 1)
121  }
122 
123  return 1;
124 }
125 
126 static int
128 {
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;
133  uint32_t t;
134 
135  if(!(*p & 1))
136  return 0;
137  if(*p != 1)
138  return 1;
139 
140  if (os->psize < 100)
141  return AVERROR_INVALIDDATA;
142  t = AV_RL32(p + 96);
143 
144  if(t == 0x05589f80){
145  if (os->psize < 184)
146  return AVERROR_INVALIDDATA;
147 
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){
154  if (os->psize < 136)
155  return AVERROR_INVALIDDATA;
156 
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;
162  }
163 
164  return 1;
165 }
166 
167 static int
169 {
170  struct ogg *ogg = s->priv_data;
171  struct ogg_stream *os = ogg->streams + idx;
172  uint8_t *p = os->buf + os->pstart;
173  int lb;
174 
175  if(*p & 8)
176  os->pflags |= AV_PKT_FLAG_KEY;
177 
178  lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
179  os->pstart += lb + 1;
180  os->psize -= lb + 1;
181 
182  while (lb--)
183  os->pduration += p[lb+1] << (lb*8);
184 
185  return 0;
186 }
187 
189  .magic = "\001video",
190  .magicsize = 6,
191  .header = ogm_header,
192  .packet = ogm_packet,
193  .granule_is_start = 1,
194  .nb_header = 2,
195 };
196 
198  .magic = "\001audio",
199  .magicsize = 6,
200  .header = ogm_header,
201  .packet = ogm_packet,
202  .granule_is_start = 1,
203  .nb_header = 2,
204 };
205 
206 const struct ogg_codec ff_ogm_text_codec = {
207  .magic = "\001text",
208  .magicsize = 5,
209  .header = ogm_header,
210  .packet = ogm_packet,
211  .granule_is_start = 1,
212  .nb_header = 2,
213 };
214 
215 const struct ogg_codec ff_ogm_old_codec = {
216  .magic = "\001Direct Show Samples embedded in Ogg",
217  .magicsize = 35,
218  .header = ogm_dshow_header,
219  .packet = ogm_packet,
220  .granule_is_start = 1,
221  .nb_header = 1,
222 };
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
const struct ogg_codec ff_ogm_old_codec
Definition: oggparseogm.c:215
Copyright (C) 2005 Michael Ahlberg, Måns Rullgård.
Definition: oggdec.h:31
unsigned int pflags
Definition: oggdec.h:67
enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
Definition: utils.c:3080
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4785
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3856
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
uint64_t_TMPL AV_RL64
Definition: bytestream.h:87
static int ogm_header(AVFormatContext *s, int idx)
Copyright (C) 2005 Michael Ahlberg, Måns Rullgård.
Definition: oggparseogm.c:37
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:87
static int ogm_dshow_header(AVFormatContext *s, int idx)
Definition: oggparseogm.c:127
Format I/O context.
Definition: avformat.h:1341
unsigned int psize
Definition: oggdec.h:66
uint8_t
int width
Video only.
Definition: avcodec.h:3922
const struct ogg_codec ff_ogm_text_codec
Definition: oggparseogm.c:206
enum AVStreamParseType need_parsing
Definition: avformat.h:1090
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1409
const uint8_t * buffer
Definition: bytestream.h:34
uint32_t tag
Definition: movenc.c:1449
ptrdiff_t size
Definition: opengl_enc.c:101
#define av_log(a,...)
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3885
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1447
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AVERROR(e)
Definition: error.h:43
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:164
int ff_vorbis_stream_comment(AVFormatContext *as, AVStream *st, const uint8_t *buf, int size)
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
Definition: bytestream.h:263
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3852
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:154
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:475
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3874
Only parse headers, do not repack.
Definition: avformat.h:794
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:3243
#define FFMIN(a, b)
Definition: common.h:96
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
unsigned int pstart
Definition: oggdec.h:65
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
struct ogg_stream * streams
Definition: oggdec.h:102
const struct ogg_codec ff_ogm_video_codec
Definition: oggparseogm.c:188
Stream structure.
Definition: avformat.h:872
unsigned int pduration
Definition: oggdec.h:68
static int ogm_packet(AVFormatContext *s, int idx)
Definition: oggparseogm.c:168
const int8_t * magic
Definition: oggdec.h:32
int sample_rate
Audio only.
Definition: avcodec.h:3966
uint8_t * buf
Definition: oggdec.h:62
full parsing and repack
Definition: avformat.h:793
Main libavformat public API header.
raw UTF-8 text
Definition: avcodec.h:643
Definition: oggdec.h:101
void * priv_data
Format private data.
Definition: avformat.h:1369
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3870
int channels
Audio only.
Definition: avcodec.h:3962
#define av_freep(p)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1019
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3860
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
const struct ogg_codec ff_ogm_audio_codec
Definition: oggparseogm.c:197