Libav
oggdec.h
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1 
25 #ifndef AVFORMAT_OGGDEC_H
26 #define AVFORMAT_OGGDEC_H
27 
28 #include "avformat.h"
29 #include "metadata.h"
30 
31 struct ogg_codec {
32  const int8_t *magic;
34  const int8_t *name;
41  int (*header)(AVFormatContext *, int);
42  int (*packet)(AVFormatContext *, int);
48  uint64_t (*gptopts)(AVFormatContext *, int, uint64_t, int64_t *dts);
57  int nb_header;
58  void (*cleanup)(AVFormatContext *s, int idx);
59 };
60 
61 struct ogg_stream {
63  unsigned int bufsize;
64  unsigned int bufpos;
65  unsigned int pstart;
66  unsigned int psize;
67  unsigned int pflags;
68  unsigned int pduration;
69  uint32_t serial;
70  uint64_t granule;
71  uint64_t start_granule;
72  int64_t lastpts;
73  int64_t lastdts;
74  int64_t sync_pos;
75  int64_t page_pos;
76  int flags;
77  const struct ogg_codec *codec;
78  int header;
79  int nsegs, segp;
81  int incomplete;
82  int page_end;
84  int nb_header;
85  void *private;
86 };
87 
88 struct ogg_state {
89  uint64_t pos;
90  int curidx;
91  struct ogg_state *next;
92  int nstreams;
93  struct ogg_stream streams[1];
94 };
95 
96 struct ogg {
98  int nstreams;
99  int headers;
100  int curidx;
101  struct ogg_state *state;
102 };
103 
104 #define OGG_FLAG_CONT 1
105 #define OGG_FLAG_BOS 2
106 #define OGG_FLAG_EOS 4
107 
108 #define OGG_NOGRANULE_VALUE -1ull
109 
110 extern const struct ogg_codec ff_celt_codec;
111 extern const struct ogg_codec ff_dirac_codec;
112 extern const struct ogg_codec ff_flac_codec;
113 extern const struct ogg_codec ff_ogm_audio_codec;
114 extern const struct ogg_codec ff_ogm_old_codec;
115 extern const struct ogg_codec ff_ogm_text_codec;
116 extern const struct ogg_codec ff_ogm_video_codec;
117 extern const struct ogg_codec ff_old_dirac_codec;
118 extern const struct ogg_codec ff_old_flac_codec;
119 extern const struct ogg_codec ff_opus_codec;
120 extern const struct ogg_codec ff_skeleton_codec;
121 extern const struct ogg_codec ff_speex_codec;
122 extern const struct ogg_codec ff_theora_codec;
123 extern const struct ogg_codec ff_vorbis_codec;
124 
126  const uint8_t *buf, int size, int parse_picture);
127 
129  const uint8_t *buf, int size);
130 
131 static inline int
132 ogg_find_stream (struct ogg * ogg, int serial)
133 {
134  int i;
135 
136  for (i = 0; i < ogg->nstreams; i++)
137  if (ogg->streams[i].serial == serial)
138  return i;
139 
140  return -1;
141 }
142 
143 static inline uint64_t
144 ogg_gptopts (AVFormatContext * s, int i, uint64_t gp, int64_t *dts)
145 {
146  struct ogg *ogg = s->priv_data;
147  struct ogg_stream *os = ogg->streams + i;
148  uint64_t pts = AV_NOPTS_VALUE;
149 
150  if(os->codec && os->codec->gptopts){
151  pts = os->codec->gptopts(s, i, gp, dts);
152  } else {
153  pts = gp;
154  if (dts)
155  *dts = pts;
156  }
157 
158  return pts;
159 }
160 
161 #endif /* AVFORMAT_OGGDEC_H */
int headers
Definition: oggdec.h:99
int header
Definition: oggdec.h:78
int granule_is_start
1 if granule is the start time of the associated packet.
Definition: oggdec.h:53
int size
int nstreams
Definition: oggdec.h:98
Copyright (C) 2005 Michael Ahlberg, Måns Rullgård.
Definition: oggdec.h:31
unsigned int bufsize
Definition: oggdec.h:63
unsigned int pflags
Definition: oggdec.h:67
const struct ogg_codec ff_celt_codec
Definition: oggparsecelt.c:90
int nb_header
set to the number of parsed headers
Definition: oggdec.h:84
int(* packet)(AVFormatContext *, int)
Definition: oggdec.h:42
const struct ogg_codec * codec
Definition: oggdec.h:77
int flags
Definition: oggdec.h:76
int64_t lastpts
Definition: oggdec.h:72
const struct ogg_codec ff_ogm_old_codec
Definition: oggparseogm.c:187
Format I/O context.
Definition: avformat.h:922
unsigned int psize
Definition: oggdec.h:66
int64_t sync_pos
file offset of the first page needed to reconstruct the current packet
Definition: oggdec.h:74
uint64_t pos
Definition: oggdec.h:89
internal metadata API header see avformat.h or the public API!
uint8_t
const struct ogg_codec ff_ogm_video_codec
Definition: oggparseogm.c:160
int(* header)(AVFormatContext *, int)
Attempt to process a packet as a header.
Definition: oggdec.h:41
int64_t page_pos
file offset of the current page
Definition: oggdec.h:75
struct ogg_state * state
Definition: oggdec.h:101
int ff_vorbis_comment(AVFormatContext *ms, AVDictionary **m, const uint8_t *buf, int size, int parse_picture)
int nstreams
Definition: oggdec.h:92
const struct ogg_codec ff_skeleton_codec
int ff_vorbis_stream_comment(AVFormatContext *as, AVStream *st, const uint8_t *buf, int size)
const struct ogg_codec ff_opus_codec
Definition: oggparseopus.c:134
uint8_t segments[255]
Definition: oggdec.h:80
int incomplete
whether we're expecting a continuation in the next page
Definition: oggdec.h:81
uint32_t serial
Definition: oggdec.h:69
uint64_t granule
Definition: oggdec.h:70
unsigned int pstart
Definition: oggdec.h:65
uint64_t start_granule
Definition: oggdec.h:71
struct ogg_stream * streams
Definition: oggdec.h:97
int segp
Definition: oggdec.h:79
const struct ogg_codec ff_vorbis_codec
int page_end
current packet is the last one completed in the page
Definition: oggdec.h:82
const struct ogg_codec ff_ogm_audio_codec
Definition: oggparseogm.c:169
Stream structure.
Definition: avformat.h:699
const struct ogg_codec ff_theora_codec
static int ogg_find_stream(struct ogg *ogg, int serial)
Definition: oggdec.h:132
unsigned int pduration
Definition: oggdec.h:68
int nsegs
Definition: oggdec.h:79
const int8_t * name
Definition: oggdec.h:34
const struct ogg_codec ff_flac_codec
Definition: oggparseflac.c:88
const struct ogg_codec ff_old_dirac_codec
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
struct ogg_state * next
Definition: oggdec.h:91
int nb_header
Number of expected headers.
Definition: oggdec.h:57
int64_t lastdts
Definition: oggdec.h:73
const struct ogg_codec ff_old_flac_codec
Definition: oggparseflac.c:95
void(* cleanup)(AVFormatContext *s, int idx)
Definition: oggdec.h:58
int curidx
Definition: oggdec.h:90
const int8_t * magic
Definition: oggdec.h:32
const struct ogg_codec ff_dirac_codec
uint8_t * buf
Definition: oggdec.h:62
const struct ogg_codec ff_speex_codec
Main libavformat public API header.
const struct ogg_codec ff_ogm_text_codec
Definition: oggparseogm.c:178
int keyframe_seek
Definition: oggdec.h:83
Definition: oggdec.h:96
void * priv_data
Format private data.
Definition: avformat.h:950
uint8_t magicsize
Definition: oggdec.h:33
int curidx
Definition: oggdec.h:100
struct ogg_stream streams[1]
Definition: oggdec.h:93
unsigned int bufpos
Definition: oggdec.h:64
static uint64_t ogg_gptopts(AVFormatContext *s, int i, uint64_t gp, int64_t *dts)
Definition: oggdec.h:144
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:228
uint64_t(* gptopts)(AVFormatContext *, int, uint64_t, int64_t *dts)
Translate a granule into a timestamp.
Definition: oggdec.h:48