mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
290 lines
8.7 KiB
C
290 lines
8.7 KiB
C
|
|
#define LIBAV_VERSION_INT 0x000406
|
|
#define LIBAV_VERSION "0.4.6"
|
|
#define LIBAV_BUILD 4601
|
|
|
|
#include "avcodec.h"
|
|
|
|
#include "avio.h"
|
|
|
|
/* packet functions */
|
|
|
|
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) */
|
|
|
|
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 */
|
|
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);
|
|
|
|
/* ffm.c */
|
|
int ffm_init(void);
|
|
|
|
/* 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_format(const char *short_name,
|
|
const char *filename, const char *mime_type);
|
|
|
|
int strstart(const char *str, const char *val, const char **ptr);
|
|
void pstrcpy(char *buf, int buf_size, const char *str);
|
|
|
|
int match_ext(const char *filename, const char *extensions);
|
|
void av_hex_dump(UINT8 *buf, int size);
|
|
|
|
void register_all(void);
|
|
|
|
INT64 gettime(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);
|
|
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 gettime(void);
|
|
INT64 parse_date(const char *datestr, int duration);
|
|
|
|
/* 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;
|