added RTP/RTSP stuff
[libav.git] / libav / avformat.h
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1#ifndef AVFORMAT_H
2#define AVFORMAT_H
de6d9b64 3
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4#define LIBAV_VERSION_INT 0x000406
5#define LIBAV_VERSION "0.4.6"
92b3e125 6#define LIBAV_BUILD 4601
4b1f4f23 7
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8#include "avcodec.h"
9
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10#include "avio.h"
11
12/* packet functions */
13
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14#define AV_NOPTS_VALUE 0
15
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16typedef struct AVPacket {
17 INT64 pts;
18 UINT8 *data;
19 int size;
20 int stream_index;
21 int flags;
6d9872f4 22 int duration;
de6d9b64 23#define PKT_FLAG_KEY 0x0001
4606ac8d 24#define PKT_FLAG_DROPPED_FRAME 0x0002
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25} AVPacket;
26
27int av_new_packet(AVPacket *pkt, int size);
28void av_free_packet(AVPacket *pkt);
29
30/*************************************************/
b9a281db 31/* input/output formats */
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32
33struct AVFormatContext;
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34
35/* this structure contains the data a format has to probe a file */
36typedef struct AVProbeData {
37 char *filename;
38 unsigned char *buf;
39 int buf_size;
40} AVProbeData;
41
42#define AVPROBE_SCORE_MAX 100
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43
44typedef struct AVFormatParameters {
45 int frame_rate;
46 int sample_rate;
47 int channels;
48 int width;
49 int height;
4606ac8d 50 enum PixelFormat pix_fmt;
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51} AVFormatParameters;
52
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53#define AVFMT_NOFILE 0x0001 /* no file should be opened */
54#define AVFMT_NEEDNUMBER 0x0002 /* needs '%d' in filename */
55#define AVFMT_NOHEADER 0x0004 /* signal that no header is present
56 (streams are added dynamically) */
57#define AVFMT_SHOW_IDS 0x0008 /* show format stream IDs numbers */
58#define AVFMT_RGB24 0x0010 /* force RGB24 output for ppm (hack
59 - need better api) */
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60#define AVFMT_RAWPICTURE 0x0020 /* format wants AVPicture structure for
61 raw picture data */
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62
63typedef struct AVOutputFormat {
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64 const char *name;
65 const char *long_name;
66 const char *mime_type;
67 const char *extensions; /* comma separated extensions */
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68 /* size of private data so that it can be allocated in the wrapper */
69 int priv_data_size;
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70 /* output support */
71 enum CodecID audio_codec; /* default audio codec */
72 enum CodecID video_codec; /* default video codec */
73 int (*write_header)(struct AVFormatContext *);
74 int (*write_packet)(struct AVFormatContext *,
75 int stream_index,
10bb7023 76 unsigned char *buf, int size, int force_pts);
de6d9b64 77 int (*write_trailer)(struct AVFormatContext *);
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78 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
79 int flags;
80 /* private fields */
81 struct AVOutputFormat *next;
82} AVOutputFormat;
de6d9b64 83
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84typedef struct AVInputFormat {
85 const char *name;
86 const char *long_name;
87 /* size of private data so that it can be allocated in the wrapper */
88 int priv_data_size;
89 /* tell if a given file has a chance of being parsing by this format */
90 int (*read_probe)(AVProbeData *);
91 /* read the format header and initialize the AVFormatContext
de6d9b64 92 structure. Return 0 if OK. 'ap' if non NULL contains
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93 additionnal paramters. Only used in raw format right
94 now. 'av_new_stream' should be called to create new streams. */
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95 int (*read_header)(struct AVFormatContext *,
96 AVFormatParameters *ap);
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97 /* read one packet and put it in 'pkt'. pts and flags are also
98 set. 'av_new_stream' can be called only if the flag
99 AVFMT_NOHEADER is used. */
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100 int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
101 /* close the stream. The AVFormatContext and AVStreams are not
102 freed by this function */
103 int (*read_close)(struct AVFormatContext *);
104 /* seek at or before a given pts (given in microsecond). The pts
105 origin is defined by the stream */
106 int (*read_seek)(struct AVFormatContext *, INT64 pts);
b9a281db 107 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_NOHEADER */
de6d9b64 108 int flags;
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109 /* if extensions are defined, then no probe is done. You should
110 usually not use extension format guessing because it is not
111 reliable enough */
112 const char *extensions;
113 /* general purpose read only value that the format can use */
114 int value;
115 /* private fields */
116 struct AVInputFormat *next;
117} AVInputFormat;
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118
119typedef struct AVStream {
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120 int index; /* stream index in AVFormatContext */
121 int id; /* format specific stream id */
de6d9b64 122 AVCodecContext codec; /* codec context */
76c0441b 123 int r_frame_rate; /* real frame rate of the stream */
de6d9b64 124 void *priv_data;
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125 /* internal data used in av_find_stream_info() */
126 int codec_info_state;
127 int codec_info_nb_repeat_frames;
128 int codec_info_nb_real_frames;
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129} AVStream;
130
131#define MAX_STREAMS 20
132
133/* format I/O context */
134typedef struct AVFormatContext {
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135 /* can only be iformat or oformat, not both at the same time */
136 struct AVInputFormat *iformat;
137 struct AVOutputFormat *oformat;
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138 void *priv_data;
139 ByteIOContext pb;
140 int nb_streams;
141 AVStream *streams[MAX_STREAMS];
142 char filename[1024]; /* input or output filename */
143 /* stream info */
144 char title[512];
145 char author[512];
146 char copyright[512];
147 char comment[512];
92b3e125 148 int flags; /* format specific flags */
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149 /* This buffer is only needed when packets were already buffered but
150 not decoded, for example to get the codec parameters in mpeg
151 streams */
152 struct AVPacketList *packet_buffer;
153} AVFormatContext;
154
155typedef struct AVPacketList {
156 AVPacket pkt;
157 struct AVPacketList *next;
158} AVPacketList;
159
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160extern AVInputFormat *first_iformat;
161extern AVOutputFormat *first_oformat;
de6d9b64 162
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163/* XXX: use automatic init with either ELF sections or C file parser */
164/* modules */
de6d9b64 165
b9a281db 166/* mpeg.c */
92b3e125 167#define AVF_FLAG_VCD 0x00000001 /* VCD compatible MPEG-PS */
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168int mpegps_init(void);
169
170/* mpegts.c */
171extern AVInputFormat mpegts_demux;
172int mpegts_init(void);
de6d9b64 173
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174/* rm.c */
175int rm_init(void);
176
177/* crc.c */
178int crc_init(void);
179
180/* img.c */
181int img_init(void);
182
183/* asf.c */
184int asf_init(void);
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185
186/* avienc.c */
b9a281db 187int avienc_init(void);
de6d9b64 188
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189/* avidec.c */
190int avidec_init(void);
6cea494e 191
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192/* swf.c */
193int swf_init(void);
194
195/* mov.c */
196int mov_init(void);
de6d9b64 197
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198/* jpeg.c */
199int jpeg_init(void);
de6d9b64 200
6cea494e 201/* gif.c */
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202int gif_init(void);
203
6cea494e 204/* au.c */
b9a281db 205int au_init(void);
6cea494e 206
de6d9b64 207/* wav.c */
b9a281db 208int wav_init(void);
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209
210/* raw.c */
b9a281db 211int raw_init(void);
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212
213/* ffm.c */
b9a281db 214int ffm_init(void);
de6d9b64 215
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216/* rtsp.c */
217extern AVInputFormat redir_demux;
218int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
219
220#include "rtp.h"
221
222#include "rtsp.h"
223
b9a281db 224/* utils.c */
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225#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
226#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
227
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228void av_register_input_format(AVInputFormat *format);
229void av_register_output_format(AVOutputFormat *format);
230AVOutputFormat *guess_format(const char *short_name,
231 const char *filename, const char *mime_type);
de6d9b64 232
b9a281db 233void av_hex_dump(UINT8 *buf, int size);
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234
235void register_all(void);
236
237INT64 gettime(void);
238
239typedef struct FifoBuffer {
240 UINT8 *buffer;
241 UINT8 *rptr, *wptr, *end;
242} FifoBuffer;
243
244int fifo_init(FifoBuffer *f, int size);
245void fifo_free(FifoBuffer *f);
246int fifo_size(FifoBuffer *f, UINT8 *rptr);
247int fifo_read(FifoBuffer *f, UINT8 *buf, int buf_size, UINT8 **rptr_ptr);
248void fifo_write(FifoBuffer *f, UINT8 *buf, int size, UINT8 **wptr_ptr);
249
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250/* media file input */
251AVInputFormat *av_find_input_format(const char *short_name);
252int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
253 AVInputFormat *fmt,
254 int buf_size,
255 AVFormatParameters *ap);
256
257#define AVERROR_UNKNOWN (-1) /* unknown error */
258#define AVERROR_IO (-2) /* i/o error */
259#define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
260#define AVERROR_INVALIDDATA (-4) /* invalid data found */
261#define AVERROR_NOMEM (-5) /* not enough memory */
262#define AVERROR_NOFMT (-6) /* unknown format */
263
264int av_find_stream_info(AVFormatContext *ic);
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265int av_read_packet(AVFormatContext *s, AVPacket *pkt);
266void av_close_input_file(AVFormatContext *s);
b9a281db 267AVStream *av_new_stream(AVFormatContext *s, int id);
de6d9b64 268
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269/* media file output */
270int av_write_header(AVFormatContext *s);
10bb7023 271int av_write_packet(AVFormatContext *s, AVPacket *pkt, int force_pts);
b9a281db 272int av_write_trailer(AVFormatContext *s);
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273
274void dump_format(AVFormatContext *ic,
275 int index,
276 const char *url,
277 int is_output);
278int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
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279INT64 parse_date(const char *datestr, int duration);
280
281/* ffm specific for ffserver */
282#define FFM_PACKET_SIZE 4096
283offset_t ffm_read_write_index(int fd);
284void ffm_write_write_index(int fd, offset_t pos);
285void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
286
287int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
288
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289int get_frame_filename(char *buf, int buf_size,
290 const char *path, int number);
b9a281db 291int filename_number_test(const char *filename);
96baaa6a 292
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293/* grab specific */
294int video_grab_init(void);
295int audio_init(void);
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296
297extern const char *v4l_device;
298extern const char *audio_device;
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299
300#ifdef HAVE_AV_CONFIG_H
301int strstart(const char *str, const char *val, const char **ptr);
302int stristart(const char *str, const char *val, const char **ptr);
303void pstrcpy(char *buf, int buf_size, const char *str);
304char *pstrcat(char *buf, int buf_size, const char *s);
305int match_ext(const char *filename, const char *extensions);
306
307struct in_addr;
308int resolve_host(struct in_addr *sin_addr, const char *hostname);
309
310void url_split(char *proto, int proto_size,
311 char *hostname, int hostname_size,
312 int *port_ptr,
313 char *path, int path_size,
314 const char *url);
315
316#endif /* HAVE_AV_CONFIG_H */
317
318#endif /* AVFORMAT_H */