8 #define LIBAVFORMAT_VERSION_INT 0x000408
9 #define LIBAVFORMAT_VERSION "0.4.8"
10 #define LIBAVFORMAT_BUILD 4608
11 #define LIBAVFORMAT_BUILD_STR "4608"
13 #define LIBAVFORMAT_IDENT "FFmpeg" LIBAVFORMAT_VERSION "b" LIBAVFORMAT_BUILD_STR
21 /* packet functions */
24 #define MAXINT64 int64_t_C(0x7fffffffffffffff)
28 #define MININT64 int64_t_C(0x8000000000000000)
31 #define AV_NOPTS_VALUE MININT64
32 #define AV_TIME_BASE 1000000
34 typedef struct AVPacket {
35 int64_t pts; /* presentation time stamp in stream units (set av_set_pts_info) */
41 void (*destruct)(struct AVPacket *);
44 #define PKT_FLAG_KEY 0x0001
46 static inline void av_init_packet(AVPacket *pkt)
48 pkt->pts = AV_NOPTS_VALUE;
50 pkt->stream_index = 0;
53 int av_new_packet(AVPacket *pkt, int size);
58 * @param pkt packet to free
60 static inline void av_free_packet(AVPacket *pkt)
62 if (pkt && pkt->destruct) {
67 /*************************************************/
68 /* fractional numbers for exact pts handling */
70 /* the exact value of the fractional number is: 'val + num / den'. num
71 is assumed to be such as 0 <= num < den */
72 typedef struct AVFrac {
73 int64_t val, num, den;
76 void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
77 void av_frac_add(AVFrac *f, int64_t incr);
78 void av_frac_set(AVFrac *f, int64_t val);
80 /*************************************************/
81 /* input/output formats */
83 struct AVFormatContext;
85 /* this structure contains the data a format has to probe a file */
86 typedef struct AVProbeData {
92 #define AVPROBE_SCORE_MAX 100
94 typedef struct AVFormatParameters {
101 enum PixelFormat pix_fmt;
102 struct AVImageFormat *image_format;
103 int channel; /* used to select dv channel */
104 const char *device; /* video4linux, audio or DV device */
105 const char *standard; /* tv standard, NTSC, PAL, SECAM */
106 } AVFormatParameters;
108 #define AVFMT_NOFILE 0x0001 /* no file should be opened */
109 #define AVFMT_NEEDNUMBER 0x0002 /* needs '%d' in filename */
110 #define AVFMT_NOHEADER 0x0004 /* signal that no header is present
111 (streams are added dynamically) */
112 #define AVFMT_SHOW_IDS 0x0008 /* show format stream IDs numbers */
113 #define AVFMT_RAWPICTURE 0x0020 /* format wants AVPicture structure for
116 typedef struct AVOutputFormat {
118 const char *long_name;
119 const char *mime_type;
120 const char *extensions; /* comma separated extensions */
121 /* size of private data so that it can be allocated in the wrapper */
124 enum CodecID audio_codec; /* default audio codec */
125 enum CodecID video_codec; /* default video codec */
126 int (*write_header)(struct AVFormatContext *);
127 int (*write_packet)(struct AVFormatContext *,
129 const uint8_t *buf, int size, int64_t pts);
130 int (*write_trailer)(struct AVFormatContext *);
131 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
133 /* currently only used to set pixel format if not YUV420P */
134 int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
136 struct AVOutputFormat *next;
139 typedef struct AVInputFormat {
141 const char *long_name;
142 /* size of private data so that it can be allocated in the wrapper */
144 /* tell if a given file has a chance of being parsing by this format */
145 int (*read_probe)(AVProbeData *);
146 /* read the format header and initialize the AVFormatContext
147 structure. Return 0 if OK. 'ap' if non NULL contains
148 additionnal paramters. Only used in raw format right
149 now. 'av_new_stream' should be called to create new streams. */
150 int (*read_header)(struct AVFormatContext *,
151 AVFormatParameters *ap);
152 /* read one packet and put it in 'pkt'. pts and flags are also
153 set. 'av_new_stream' can be called only if the flag
154 AVFMT_NOHEADER is used. */
155 int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
156 /* close the stream. The AVFormatContext and AVStreams are not
157 freed by this function */
158 int (*read_close)(struct AVFormatContext *);
159 /* seek at or before a given pts (given in microsecond). The pts
160 origin is defined by the stream */
161 int (*read_seek)(struct AVFormatContext *, int64_t pts);
162 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_NOHEADER */
164 /* if extensions are defined, then no probe is done. You should
165 usually not use extension format guessing because it is not
167 const char *extensions;
168 /* general purpose read only value that the format can use */
171 struct AVInputFormat *next;
174 typedef struct AVStream {
175 int index; /* stream index in AVFormatContext */
176 int id; /* format specific stream id */
177 AVCodecContext codec; /* codec context */
178 int r_frame_rate; /* real frame rate of the stream */
179 int r_frame_rate_base;/* real frame rate base of the stream */
181 /* internal data used in av_find_stream_info() */
182 int codec_info_state;
183 int codec_info_nb_repeat_frames;
184 int codec_info_nb_real_frames;
185 /* PTS generation when outputing stream */
187 /* ffmpeg.c private use */
188 int stream_copy; /* if TRUE, just copy stream */
189 /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
190 * MN:dunno if thats the right place, for it */
192 /* decoding: position of the first frame of the component, in
193 AV_TIME_BASE fractional seconds. */
195 /* decoding: duration of the stream, in AV_TIME_BASE fractional
200 #define MAX_STREAMS 20
202 /* format I/O context */
203 typedef struct AVFormatContext {
204 /* can only be iformat or oformat, not both at the same time */
205 struct AVInputFormat *iformat;
206 struct AVOutputFormat *oformat;
210 AVStream *streams[MAX_STREAMS];
211 char filename[1024]; /* input or output filename */
218 int year; /* ID3 year, 0 if none */
219 int track; /* track number, 0 if none */
220 char genre[32]; /* ID3 genre */
222 int flags; /* format specific flags */
223 /* private data for pts handling (do not modify directly) */
224 int pts_wrap_bits; /* number of bits in pts (used for wrapping control) */
225 int pts_num, pts_den; /* value to convert to seconds */
226 /* This buffer is only needed when packets were already buffered but
227 not decoded, for example to get the codec parameters in mpeg
229 struct AVPacketList *packet_buffer;
231 /* decoding: position of the first frame of the component, in
232 AV_TIME_BASE fractional seconds. NEVER set this value directly:
233 it is deduced from the AVStream values. */
235 /* decoding: duration of the stream, in AV_TIME_BASE fractional
236 seconds. NEVER set this value directly: it is deduced from the
239 /* decoding: total file size. 0 if unknown */
241 /* decoding: total stream bitrate in bit/s, 0 if not
242 available. Never set it directly if the file_size and the
243 duration are known as ffmpeg can compute it automatically. */
247 typedef struct AVPacketList {
249 struct AVPacketList *next;
252 extern AVInputFormat *first_iformat;
253 extern AVOutputFormat *first_oformat;
255 /* still image support */
256 struct AVInputImageContext;
257 typedef struct AVInputImageContext AVInputImageContext;
259 typedef struct AVImageInfo {
260 enum PixelFormat pix_fmt; /* requested pixel format */
261 int width; /* requested width */
262 int height; /* requested height */
263 int interleaved; /* image is interleaved (e.g. interleaved GIF) */
264 AVPicture pict; /* returned allocated image */
267 /* AVImageFormat.flags field constants */
268 #define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
270 typedef struct AVImageFormat {
272 const char *extensions;
273 /* tell if a given file has a chance of being parsing by this format */
274 int (*img_probe)(AVProbeData *);
275 /* read a whole image. 'alloc_cb' is called when the image size is
276 known so that the caller can allocate the image. If 'allo_cb'
277 returns non zero, then the parsing is aborted. Return '0' if
279 int (*img_read)(ByteIOContext *,
280 int (*alloc_cb)(void *, AVImageInfo *info), void *);
281 /* write the image */
282 int supported_pixel_formats; /* mask of supported formats for output */
283 int (*img_write)(ByteIOContext *, AVImageInfo *);
285 struct AVImageFormat *next;
288 void av_register_image_format(AVImageFormat *img_fmt);
289 AVImageFormat *av_probe_image_format(AVProbeData *pd);
290 AVImageFormat *guess_image_format(const char *filename);
291 int av_read_image(ByteIOContext *pb, const char *filename,
293 int (*alloc_cb)(void *, AVImageInfo *info), void *opaque);
294 int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img);
296 extern AVImageFormat *first_image_format;
298 extern AVImageFormat pnm_image_format;
299 extern AVImageFormat pbm_image_format;
300 extern AVImageFormat pgm_image_format;
301 extern AVImageFormat ppm_image_format;
302 extern AVImageFormat pam_image_format;
303 extern AVImageFormat pgmyuv_image_format;
304 extern AVImageFormat yuv_image_format;
306 extern AVImageFormat png_image_format;
308 extern AVImageFormat jpeg_image_format;
309 extern AVImageFormat gif_image_format;
311 /* XXX: use automatic init with either ELF sections or C file parser */
315 extern AVInputFormat mpegps_demux;
316 int mpegps_init(void);
319 extern AVInputFormat mpegts_demux;
320 int mpegts_init(void);
335 int avienc_init(void);
338 int avidec_init(void);
347 int movenc_init(void);
350 int flvenc_init(void);
353 int flvdec_init(void);
377 int yuv4mpeg_init(void);
389 extern AVInputFormat redir_demux;
390 int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
393 int fourxm_init(void);
402 int ipmovie_init(void);
415 extern AVOutputFormat yuv4mpegpipe_oformat;
418 void av_register_input_format(AVInputFormat *format);
419 void av_register_output_format(AVOutputFormat *format);
420 AVOutputFormat *guess_stream_format(const char *short_name,
421 const char *filename, const char *mime_type);
422 AVOutputFormat *guess_format(const char *short_name,
423 const char *filename, const char *mime_type);
425 void av_hex_dump(uint8_t *buf, int size);
427 void av_register_all(void);
429 typedef struct FifoBuffer {
431 uint8_t *rptr, *wptr, *end;
434 int fifo_init(FifoBuffer *f, int size);
435 void fifo_free(FifoBuffer *f);
436 int fifo_size(FifoBuffer *f, uint8_t *rptr);
437 int fifo_read(FifoBuffer *f, uint8_t *buf, int buf_size, uint8_t **rptr_ptr);
438 void fifo_write(FifoBuffer *f, uint8_t *buf, int size, uint8_t **wptr_ptr);
440 /* media file input */
441 AVInputFormat *av_find_input_format(const char *short_name);
442 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
443 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
446 AVFormatParameters *ap);
448 #define AVERROR_UNKNOWN (-1) /* unknown error */
449 #define AVERROR_IO (-2) /* i/o error */
450 #define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
451 #define AVERROR_INVALIDDATA (-4) /* invalid data found */
452 #define AVERROR_NOMEM (-5) /* not enough memory */
453 #define AVERROR_NOFMT (-6) /* unknown format */
455 int av_find_stream_info(AVFormatContext *ic);
456 int av_read_packet(AVFormatContext *s, AVPacket *pkt);
457 void av_close_input_file(AVFormatContext *s);
458 AVStream *av_new_stream(AVFormatContext *s, int id);
459 void av_set_pts_info(AVFormatContext *s, int pts_wrap_bits,
460 int pts_num, int pts_den);
462 /* media file output */
463 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
464 int av_write_header(AVFormatContext *s);
465 int av_write_frame(AVFormatContext *s, int stream_index, const uint8_t *buf,
467 int av_write_trailer(AVFormatContext *s);
469 void dump_format(AVFormatContext *ic,
473 int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
474 int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
475 int64_t parse_date(const char *datestr, int duration);
477 int64_t av_gettime(void);
479 /* ffm specific for ffserver */
480 #define FFM_PACKET_SIZE 4096
481 offset_t ffm_read_write_index(int fd);
482 void ffm_write_write_index(int fd, offset_t pos);
483 void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
485 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
487 int get_frame_filename(char *buf, int buf_size,
488 const char *path, int number);
489 int filename_number_test(const char *filename);
492 int video_grab_init(void);
493 int audio_init(void);
496 int dv1394_init(void);
498 #ifdef HAVE_AV_CONFIG_H
500 #include "os_support.h"
502 int strstart(const char *str, const char *val, const char **ptr);
503 int stristart(const char *str, const char *val, const char **ptr);
504 void pstrcpy(char *buf, int buf_size, const char *str);
505 char *pstrcat(char *buf, int buf_size, const char *s);
507 void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
509 #define dynarray_add(tab, nb_ptr, elem)\
511 typeof(tab) _tab = (tab);\
512 typeof(elem) _elem = (elem);\
513 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
514 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
517 time_t mktimegm(struct tm *tm);
518 const char *small_strptime(const char *p, const char *fmt,
522 int resolve_host(struct in_addr *sin_addr, const char *hostname);
524 void url_split(char *proto, int proto_size,
525 char *hostname, int hostname_size,
527 char *path, int path_size,
530 int match_ext(const char *filename, const char *extensions);
532 #endif /* HAVE_AV_CONFIG_H */
538 #endif /* AVFORMAT_H */