8 #define LIBAVFORMAT_VERSION_INT 0x000408
9 #define LIBAVFORMAT_VERSION "0.4.8"
10 #define LIBAVFORMAT_BUILD 4607
11 #define LIBAVFORMAT_BUILD_STR "4607"
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 /* XXX: change prototype for 64 bit pts */
128 int (*write_packet
)(struct AVFormatContext
*,
130 unsigned char *buf
, int size
, int force_pts
);
131 int (*write_trailer
)(struct AVFormatContext
*);
132 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
134 /* currently only used to set pixel format if not YUV420P */
135 int (*set_parameters
)(struct AVFormatContext
*, AVFormatParameters
*);
137 struct AVOutputFormat
*next
;
140 typedef struct AVInputFormat
{
142 const char *long_name
;
143 /* size of private data so that it can be allocated in the wrapper */
145 /* tell if a given file has a chance of being parsing by this format */
146 int (*read_probe
)(AVProbeData
*);
147 /* read the format header and initialize the AVFormatContext
148 structure. Return 0 if OK. 'ap' if non NULL contains
149 additionnal paramters. Only used in raw format right
150 now. 'av_new_stream' should be called to create new streams. */
151 int (*read_header
)(struct AVFormatContext
*,
152 AVFormatParameters
*ap
);
153 /* read one packet and put it in 'pkt'. pts and flags are also
154 set. 'av_new_stream' can be called only if the flag
155 AVFMT_NOHEADER is used. */
156 int (*read_packet
)(struct AVFormatContext
*, AVPacket
*pkt
);
157 /* close the stream. The AVFormatContext and AVStreams are not
158 freed by this function */
159 int (*read_close
)(struct AVFormatContext
*);
160 /* seek at or before a given pts (given in microsecond). The pts
161 origin is defined by the stream */
162 int (*read_seek
)(struct AVFormatContext
*, int64_t pts
);
163 /* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_NOHEADER */
165 /* if extensions are defined, then no probe is done. You should
166 usually not use extension format guessing because it is not
168 const char *extensions
;
169 /* general purpose read only value that the format can use */
172 struct AVInputFormat
*next
;
175 typedef struct AVStream
{
176 int index
; /* stream index in AVFormatContext */
177 int id
; /* format specific stream id */
178 AVCodecContext codec
; /* codec context */
179 int r_frame_rate
; /* real frame rate of the stream */
180 int r_frame_rate_base
;/* real frame rate base of the stream */
182 /* internal data used in av_find_stream_info() */
183 int codec_info_state
;
184 int codec_info_nb_repeat_frames
;
185 int codec_info_nb_real_frames
;
186 /* PTS generation when outputing stream */
188 /* ffmpeg.c private use */
189 int stream_copy
; /* if TRUE, just copy stream */
190 /* quality, as it has been removed from AVCodecContext and put in AVVideoFrame
191 * MN:dunno if thats the right place, for it */
193 /* decoding: position of the first frame of the component, in
194 AV_TIME_BASE fractional seconds. */
196 /* decoding: duration of the stream, in AV_TIME_BASE fractional
201 #define MAX_STREAMS 20
203 /* format I/O context */
204 typedef struct AVFormatContext
{
205 /* can only be iformat or oformat, not both at the same time */
206 struct AVInputFormat
*iformat
;
207 struct AVOutputFormat
*oformat
;
211 AVStream
*streams
[MAX_STREAMS
];
212 char filename
[1024]; /* input or output filename */
219 int year
; /* ID3 year, 0 if none */
220 int track
; /* track number, 0 if none */
221 char genre
[32]; /* ID3 genre */
223 int flags
; /* format specific flags */
224 /* private data for pts handling (do not modify directly) */
225 int pts_wrap_bits
; /* number of bits in pts (used for wrapping control) */
226 int pts_num
, pts_den
; /* value to convert to seconds */
227 /* This buffer is only needed when packets were already buffered but
228 not decoded, for example to get the codec parameters in mpeg
230 struct AVPacketList
*packet_buffer
;
232 /* decoding: position of the first frame of the component, in
233 AV_TIME_BASE fractional seconds. NEVER set this value directly:
234 it is deduced from the AVStream values. */
236 /* decoding: duration of the stream, in AV_TIME_BASE fractional
237 seconds. NEVER set this value directly: it is deduced from the
240 /* decoding: total file size. 0 if unknown */
242 /* decoding: total stream bitrate in bit/s, 0 if not
243 available. Never set it directly if the file_size and the
244 duration are known as ffmpeg can compute it automatically. */
248 typedef struct AVPacketList
{
250 struct AVPacketList
*next
;
253 extern AVInputFormat
*first_iformat
;
254 extern AVOutputFormat
*first_oformat
;
256 /* still image support */
257 struct AVInputImageContext
;
258 typedef struct AVInputImageContext AVInputImageContext
;
260 typedef struct AVImageInfo
{
261 enum PixelFormat pix_fmt
; /* requested pixel format */
262 int width
; /* requested width */
263 int height
; /* requested height */
264 int interleaved
; /* image is interleaved (e.g. interleaved GIF) */
265 AVPicture pict
; /* returned allocated image */
268 /* AVImageFormat.flags field constants */
269 #define AVIMAGE_INTERLEAVED 0x0001 /* image format support interleaved output */
271 typedef struct AVImageFormat
{
273 const char *extensions
;
274 /* tell if a given file has a chance of being parsing by this format */
275 int (*img_probe
)(AVProbeData
*);
276 /* read a whole image. 'alloc_cb' is called when the image size is
277 known so that the caller can allocate the image. If 'allo_cb'
278 returns non zero, then the parsing is aborted. Return '0' if
280 int (*img_read
)(ByteIOContext
*,
281 int (*alloc_cb
)(void *, AVImageInfo
*info
), void *);
282 /* write the image */
283 int supported_pixel_formats
; /* mask of supported formats for output */
284 int (*img_write
)(ByteIOContext
*, AVImageInfo
*);
286 struct AVImageFormat
*next
;
289 void av_register_image_format(AVImageFormat
*img_fmt
);
290 AVImageFormat
*av_probe_image_format(AVProbeData
*pd
);
291 AVImageFormat
*guess_image_format(const char *filename
);
292 int av_read_image(ByteIOContext
*pb
, const char *filename
,
294 int (*alloc_cb
)(void *, AVImageInfo
*info
), void *opaque
);
295 int av_write_image(ByteIOContext
*pb
, AVImageFormat
*fmt
, AVImageInfo
*img
);
297 extern AVImageFormat
*first_image_format
;
299 extern AVImageFormat pnm_image_format
;
300 extern AVImageFormat pbm_image_format
;
301 extern AVImageFormat pgm_image_format
;
302 extern AVImageFormat ppm_image_format
;
303 extern AVImageFormat pam_image_format
;
304 extern AVImageFormat pgmyuv_image_format
;
305 extern AVImageFormat yuv_image_format
;
307 extern AVImageFormat png_image_format
;
309 extern AVImageFormat jpeg_image_format
;
310 extern AVImageFormat gif_image_format
;
312 /* XXX: use automatic init with either ELF sections or C file parser */
316 extern AVInputFormat mpegps_demux
;
317 int mpegps_init(void);
320 extern AVInputFormat mpegts_demux
;
321 int mpegts_init(void);
336 int avienc_init(void);
339 int avidec_init(void);
348 int movenc_init(void);
351 int flvenc_init(void);
354 int flvdec_init(void);
378 int yuv4mpeg_init(void);
390 extern AVInputFormat redir_demux
;
391 int redir_open(AVFormatContext
**ic_ptr
, ByteIOContext
*f
);
394 int fourxm_init(void);
403 int ipmovie_init(void);
416 extern AVOutputFormat yuv4mpegpipe_oformat
;
419 void av_register_input_format(AVInputFormat
*format
);
420 void av_register_output_format(AVOutputFormat
*format
);
421 AVOutputFormat
*guess_stream_format(const char *short_name
,
422 const char *filename
, const char *mime_type
);
423 AVOutputFormat
*guess_format(const char *short_name
,
424 const char *filename
, const char *mime_type
);
426 void av_hex_dump(uint8_t *buf
, int size
);
428 void av_register_all(void);
430 typedef struct FifoBuffer
{
432 uint8_t *rptr
, *wptr
, *end
;
435 int fifo_init(FifoBuffer
*f
, int size
);
436 void fifo_free(FifoBuffer
*f
);
437 int fifo_size(FifoBuffer
*f
, uint8_t *rptr
);
438 int fifo_read(FifoBuffer
*f
, uint8_t *buf
, int buf_size
, uint8_t **rptr_ptr
);
439 void fifo_write(FifoBuffer
*f
, uint8_t *buf
, int size
, uint8_t **wptr_ptr
);
441 /* media file input */
442 AVInputFormat
*av_find_input_format(const char *short_name
);
443 AVInputFormat
*av_probe_input_format(AVProbeData
*pd
, int is_opened
);
444 int av_open_input_file(AVFormatContext
**ic_ptr
, const char *filename
,
447 AVFormatParameters
*ap
);
449 #define AVERROR_UNKNOWN (-1) /* unknown error */
450 #define AVERROR_IO (-2) /* i/o error */
451 #define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
452 #define AVERROR_INVALIDDATA (-4) /* invalid data found */
453 #define AVERROR_NOMEM (-5) /* not enough memory */
454 #define AVERROR_NOFMT (-6) /* unknown format */
456 int av_find_stream_info(AVFormatContext
*ic
);
457 int av_read_packet(AVFormatContext
*s
, AVPacket
*pkt
);
458 void av_close_input_file(AVFormatContext
*s
);
459 AVStream
*av_new_stream(AVFormatContext
*s
, int id
);
460 void av_set_pts_info(AVFormatContext
*s
, int pts_wrap_bits
,
461 int pts_num
, int pts_den
);
463 /* media file output */
464 int av_set_parameters(AVFormatContext
*s
, AVFormatParameters
*ap
);
465 int av_write_header(AVFormatContext
*s
);
466 int av_write_frame(AVFormatContext
*s
, int stream_index
, const uint8_t *buf
,
468 int av_write_trailer(AVFormatContext
*s
);
470 void dump_format(AVFormatContext
*ic
,
474 int parse_image_size(int *width_ptr
, int *height_ptr
, const char *str
);
475 int parse_frame_rate(int *frame_rate
, int *frame_rate_base
, const char *arg
);
476 int64_t parse_date(const char *datestr
, int duration
);
478 int64_t av_gettime(void);
480 /* ffm specific for ffserver */
481 #define FFM_PACKET_SIZE 4096
482 offset_t
ffm_read_write_index(int fd
);
483 void ffm_write_write_index(int fd
, offset_t pos
);
484 void ffm_set_write_index(AVFormatContext
*s
, offset_t pos
, offset_t file_size
);
486 int find_info_tag(char *arg
, int arg_size
, const char *tag1
, const char *info
);
488 int get_frame_filename(char *buf
, int buf_size
,
489 const char *path
, int number
);
490 int filename_number_test(const char *filename
);
493 int video_grab_init(void);
494 int audio_init(void);
497 int dv1394_init(void);
499 #ifdef HAVE_AV_CONFIG_H
501 #include "os_support.h"
503 int strstart(const char *str
, const char *val
, const char **ptr
);
504 int stristart(const char *str
, const char *val
, const char **ptr
);
505 void pstrcpy(char *buf
, int buf_size
, const char *str
);
506 char *pstrcat(char *buf
, int buf_size
, const char *s
);
508 void __dynarray_add(unsigned long **tab_ptr
, int *nb_ptr
, unsigned long elem
);
510 #define dynarray_add(tab, nb_ptr, elem)\
512 typeof(tab) _tab = (tab);\
513 typeof(elem) _elem = (elem);\
514 (void)sizeof(**_tab == _elem); /* check that types are compatible */\
515 __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
518 time_t mktimegm(struct tm
*tm
);
519 const char *small_strptime(const char *p
, const char *fmt
,
523 int resolve_host(struct in_addr
*sin_addr
, const char *hostname
);
525 void url_split(char *proto
, int proto_size
,
526 char *hostname
, int hostname_size
,
528 char *path
, int path_size
,
531 int match_ext(const char *filename
, const char *extensions
);
533 #endif /* HAVE_AV_CONFIG_H */
539 #endif /* AVFORMAT_H */