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ffmpeg/libav/avformat.h

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#ifndef AVFORMAT_H
#define AVFORMAT_H
#define LIBAVFORMAT_VERSION_INT 0x000406
#define LIBAVFORMAT_VERSION "0.4.6"
#define LIBAVFORMAT_BUILD 4602
#include "avcodec.h"
#include "avio.h"
/* packet functions */
#define AV_NOPTS_VALUE 0
typedef struct AVPacket {
INT64 pts;
UINT8 *data;
int size;
int stream_index;
int flags;
int duration;
#define PKT_FLAG_KEY 0x0001
#define PKT_FLAG_DROPPED_FRAME 0x0002
} AVPacket;
int av_new_packet(AVPacket *pkt, int size);
void av_free_packet(AVPacket *pkt);
/*************************************************/
/* input/output formats */
struct AVFormatContext;
/* this structure contains the data a format has to probe a file */
typedef struct AVProbeData {
char *filename;
unsigned char *buf;
int buf_size;
} AVProbeData;
#define AVPROBE_SCORE_MAX 100
typedef struct AVFormatParameters {
int frame_rate;
int sample_rate;
int channels;
int width;
int height;
enum PixelFormat pix_fmt;
} AVFormatParameters;
#define AVFMT_NOFILE 0x0001 /* no file should be opened */
#define AVFMT_NEEDNUMBER 0x0002 /* needs '%d' in filename */
#define AVFMT_NOHEADER 0x0004 /* signal that no header is present
(streams are added dynamically) */
#define AVFMT_SHOW_IDS 0x0008 /* show format stream IDs numbers */
#define AVFMT_RGB24 0x0010 /* force RGB24 output for ppm (hack
- need better api) */
#define AVFMT_RAWPICTURE 0x0020 /* format wants AVPicture structure for
raw picture data */
typedef struct AVOutputFormat {
const char *name;
const char *long_name;
const char *mime_type;
const char *extensions; /* comma separated extensions */
/* size of private data so that it can be allocated in the wrapper */
int priv_data_size;
/* output support */
enum CodecID audio_codec; /* default audio codec */
enum CodecID video_codec; /* default video codec */
int (*write_header)(struct AVFormatContext *);
int (*write_packet)(struct AVFormatContext *,
int stream_index,
unsigned char *buf, int size, int force_pts);
int (*write_trailer)(struct AVFormatContext *);
/* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
int flags;
/* private fields */
struct AVOutputFormat *next;
} AVOutputFormat;
typedef struct AVInputFormat {
const char *name;
const char *long_name;
/* size of private data so that it can be allocated in the wrapper */
int priv_data_size;
/* tell if a given file has a chance of being parsing by this format */
int (*read_probe)(AVProbeData *);
/* read the format header and initialize the AVFormatContext
structure. Return 0 if OK. 'ap' if non NULL contains
additionnal paramters. Only used in raw format right
now. 'av_new_stream' should be called to create new streams. */
int (*read_header)(struct AVFormatContext *,
AVFormatParameters *ap);
/* read one packet and put it in 'pkt'. pts and flags are also
set. 'av_new_stream' can be called only if the flag
AVFMT_NOHEADER is used. */
int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
/* close the stream. The AVFormatContext and AVStreams are not
freed by this function */
int (*read_close)(struct AVFormatContext *);
/* seek at or before a given pts (given in microsecond). The pts
origin is defined by the stream */
int (*read_seek)(struct AVFormatContext *, INT64 pts);
/* can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_NOHEADER */
int flags;
/* if extensions are defined, then no probe is done. You should
usually not use extension format guessing because it is not
reliable enough */
const char *extensions;
/* general purpose read only value that the format can use */
int value;
/* private fields */
struct AVInputFormat *next;
} AVInputFormat;
typedef struct AVStream {
int index; /* stream index in AVFormatContext */
int id; /* format specific stream id */
AVCodecContext codec; /* codec context */
int r_frame_rate; /* real frame rate of the stream */
uint64_t time_length; /* real length of the stream in miliseconds */
void* extra_data; /* some extra data - i.e. longer WAVEFORMATEX */
int extra_data_size; /* size of extra data chunk */
void *priv_data;
/* internal data used in av_find_stream_info() */
int codec_info_state;
int codec_info_nb_repeat_frames;
int codec_info_nb_real_frames;
} AVStream;
#define MAX_STREAMS 20
/* format I/O context */
typedef struct AVFormatContext {
/* can only be iformat or oformat, not both at the same time */
struct AVInputFormat *iformat;
struct AVOutputFormat *oformat;
void *priv_data;
ByteIOContext pb;
int nb_streams;
AVStream *streams[MAX_STREAMS];
char filename[1024]; /* input or output filename */
/* stream info */
char title[512];
char author[512];
char copyright[512];
char comment[512];
int flags; /* format specific flags */
/* This buffer is only needed when packets were already buffered but
not decoded, for example to get the codec parameters in mpeg
streams */
struct AVPacketList *packet_buffer;
} AVFormatContext;
typedef struct AVPacketList {
AVPacket pkt;
struct AVPacketList *next;
} AVPacketList;
extern AVInputFormat *first_iformat;
extern AVOutputFormat *first_oformat;
/* XXX: use automatic init with either ELF sections or C file parser */
/* modules */
/* mpeg.c */
#define AVF_FLAG_VCD 0x00000001 /* VCD compatible MPEG-PS */
int mpegps_init(void);
/* mpegts.c */
extern AVInputFormat mpegts_demux;
int mpegts_init(void);
/* rm.c */
int rm_init(void);
/* crc.c */
int crc_init(void);
/* img.c */
int img_init(void);
/* asf.c */
int asf_init(void);
/* avienc.c */
int avienc_init(void);
/* avidec.c */
int avidec_init(void);
/* swf.c */
int swf_init(void);
/* mov.c */
int mov_init(void);
/* jpeg.c */
int jpeg_init(void);
/* gif.c */
int gif_init(void);
/* au.c */
int au_init(void);
/* wav.c */
int wav_init(void);
/* raw.c */
int raw_init(void);
/* ogg.c */
int ogg_init(void);
/* ffm.c */
int ffm_init(void);
/* rtsp.c */
extern AVInputFormat redir_demux;
int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f);
#include "rtp.h"
#include "rtsp.h"
/* utils.c */
#define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
#define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
void av_register_input_format(AVInputFormat *format);
void av_register_output_format(AVOutputFormat *format);
AVOutputFormat *guess_stream_format(const char *short_name,
const char *filename, const char *mime_type);
AVOutputFormat *guess_format(const char *short_name,
const char *filename, const char *mime_type);
void av_hex_dump(UINT8 *buf, int size);
void av_register_all(void);
typedef struct FifoBuffer {
UINT8 *buffer;
UINT8 *rptr, *wptr, *end;
} FifoBuffer;
int fifo_init(FifoBuffer *f, int size);
void fifo_free(FifoBuffer *f);
int fifo_size(FifoBuffer *f, UINT8 *rptr);
int fifo_read(FifoBuffer *f, UINT8 *buf, int buf_size, UINT8 **rptr_ptr);
void fifo_write(FifoBuffer *f, UINT8 *buf, int size, UINT8 **wptr_ptr);
/* media file input */
AVInputFormat *av_find_input_format(const char *short_name);
AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
AVInputFormat *fmt,
int buf_size,
AVFormatParameters *ap);
#define AVERROR_UNKNOWN (-1) /* unknown error */
#define AVERROR_IO (-2) /* i/o error */
#define AVERROR_NUMEXPECTED (-3) /* number syntax expected in filename */
#define AVERROR_INVALIDDATA (-4) /* invalid data found */
#define AVERROR_NOMEM (-5) /* not enough memory */
#define AVERROR_NOFMT (-6) /* unknown format */
int av_find_stream_info(AVFormatContext *ic);
int av_read_packet(AVFormatContext *s, AVPacket *pkt);
void av_close_input_file(AVFormatContext *s);
AVStream *av_new_stream(AVFormatContext *s, int id);
/* media file output */
int av_write_header(AVFormatContext *s);
int av_write_packet(AVFormatContext *s, AVPacket *pkt, int force_pts);
int av_write_trailer(AVFormatContext *s);
void dump_format(AVFormatContext *ic,
int index,
const char *url,
int is_output);
int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
INT64 parse_date(const char *datestr, int duration);
INT64 av_gettime(void);
/* ffm specific for ffserver */
#define FFM_PACKET_SIZE 4096
offset_t ffm_read_write_index(int fd);
void ffm_write_write_index(int fd, offset_t pos);
void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
int get_frame_filename(char *buf, int buf_size,
const char *path, int number);
int filename_number_test(const char *filename);
/* grab specific */
int video_grab_init(void);
int audio_init(void);
extern const char *v4l_device;
extern const char *audio_device;
#ifdef HAVE_AV_CONFIG_H
int strstart(const char *str, const char *val, const char **ptr);
int stristart(const char *str, const char *val, const char **ptr);
void pstrcpy(char *buf, int buf_size, const char *str);
char *pstrcat(char *buf, int buf_size, const char *s);
int match_ext(const char *filename, const char *extensions);
struct in_addr;
int resolve_host(struct in_addr *sin_addr, const char *hostname);
void url_split(char *proto, int proto_size,
char *hostname, int hostname_size,
int *port_ptr,
char *path, int path_size,
const char *url);
#endif /* HAVE_AV_CONFIG_H */
#endif /* AVFORMAT_H */
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