libav/avformat.h

   1
   2 #define LIBAV_VERSION_INT 0x000406
   3 #define LIBAV_VERSION     "0.4.6"
   4 #define LIBAV_BUILD       4600
   5
   6 #include "avcodec.h"
   7
   8 #include "avio.h"
   9
  10 /* packet functions */
  11
  12 typedef struct AVPacket {
  13     INT64 pts;
  14     UINT8 *data;
  15     int size;
  16     int stream_index;
  17     int flags;
  18 #define PKT_FLAG_KEY   0x0001
  19 #define PKT_FLAG_DROPPED_FRAME   0x0002
  20 } AVPacket;
  21
  22 int av_new_packet(AVPacket *pkt, int size);
  23 void av_free_packet(AVPacket *pkt);
  24
  25 /*************************************************/
  26 /* output formats */
  27
  28 struct AVFormatContext;
  29 struct AVFormatInputContext;
  30
  31 typedef struct AVFormatParameters {
  32     int frame_rate;
  33     int sample_rate;
  34     int channels;
  35     int width;
  36     int height;
  37     enum PixelFormat pix_fmt;
  38 } AVFormatParameters;
  39
  40 typedef struct AVFormat {
  41     const char *name;
  42     const char *long_name;
  43     const char *mime_type;
  44     const char *extensions; /* comma separated extensions */
  45
  46     /* output support */
  47     enum CodecID audio_codec; /* default audio codec */
  48     enum CodecID video_codec; /* default video codec */
  49     int (*write_header)(struct AVFormatContext *);
  50     int (*write_packet)(struct AVFormatContext *,
  51                         int stream_index,
  52                         unsigned char *buf, int size, int force_pts);
  53     int (*write_trailer)(struct AVFormatContext *);
  54
  55     /* optional input support */
  56     /* read the format header and initialize the AVFormatInputContext
  57        structure. Return 0 if OK. 'ap' if non NULL contains
  58        additionnal paramters. Only used in raw format right now */
  59     int (*read_header)(struct AVFormatContext *,
  60                        AVFormatParameters *ap);
  61     /* read one packet and put it in 'pkt'. pts and flags are also set */
  62     int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
  63     /* close the stream. The AVFormatContext and AVStreams are not
  64        freed by this function */
  65     int (*read_close)(struct AVFormatContext *);
  66     /* seek at or before a given pts (given in microsecond). The pts
  67        origin is defined by the stream */
  68     int (*read_seek)(struct AVFormatContext *, INT64 pts);
  69     int flags;
  70 #define AVFMT_NOFILE        0x0001 /* no file should be opened */
  71 #define AVFMT_NEEDNUMBER    0x0002 /* needs '%d' in filename */
  72     struct AVFormat *next;
  73 } AVFormat;
  74
  75 typedef struct AVStream {
  76     int id;       /* internal stream id */
  77     AVCodecContext codec; /* codec context */
  78     void *priv_data;
  79 } AVStream;
  80
  81 #define MAX_STREAMS 20
  82
  83 /* format I/O context */
  84 typedef struct AVFormatContext {
  85     struct AVFormat *format;
  86     void *priv_data;
  87     ByteIOContext pb;
  88     int nb_streams;
  89     AVStream *streams[MAX_STREAMS];
  90     char filename[1024]; /* input or output filename */
  91     /* stream info */
  92     char title[512];
  93     char author[512];
  94     char copyright[512];
  95     char comment[512];
  96     /* This buffer is only needed when packets were already buffered but
  97        not decoded, for example to get the codec parameters in mpeg
  98        streams */
  99    struct AVPacketList *packet_buffer;
 100 } AVFormatContext;
 101
 102 typedef struct AVPacketList {
 103     AVPacket pkt;
 104     struct AVPacketList *next;
 105 } AVPacketList;
 106
 107 extern AVFormat *first_format;
 108
 109 /* rv10enc.c */
 110 extern AVFormat rm_format;
 111
 112 /* mpegmux.c */
 113 extern AVFormat mpeg_mux_format;
 114
 115 /* asfenc.c */
 116 extern AVFormat asf_format;
 117
 118 /* avienc.c */
 119 extern AVFormat avi_format;
 120
 121 /* mov.c */
 122 extern AVFormat mov_format;
 123 extern AVFormat mp4_format;
 124
 125 /* jpegenc.c */
 126 extern AVFormat mpjpeg_format;
 127 extern AVFormat jpeg_format;
 128 extern AVFormat single_jpeg_format;
 129
 130 /* swfenc.c */
 131 extern AVFormat swf_format;
 132
 133 /* gif.c */
 134 extern AVFormat gif_format;
 135 /* au.c */
 136 extern AVFormat au_format;
 137
 138 /* wav.c */
 139 extern AVFormat wav_format;
 140
 141 /* img.c */
 142 extern AVFormat pgm_format;
 143 extern AVFormat ppm_format;
 144 extern AVFormat pgmyuv_format;
 145 extern AVFormat imgyuv_format;
 146
 147 extern AVFormat pgmpipe_format;
 148 extern AVFormat pgmyuvpipe_format;
 149 extern AVFormat ppmpipe_format;
 150
 151 /* raw.c */
 152 extern AVFormat mp2_format;
 153 extern AVFormat ac3_format;
 154 extern AVFormat h263_format;
 155 extern AVFormat mpeg1video_format;
 156 extern AVFormat mjpeg_format;
 157 extern AVFormat pcm_s16le_format;
 158 extern AVFormat pcm_s16be_format;
 159 extern AVFormat pcm_u16le_format;
 160 extern AVFormat pcm_u16be_format;
 161 extern AVFormat pcm_s8_format;
 162 extern AVFormat pcm_u8_format;
 163 extern AVFormat pcm_mulaw_format;
 164 extern AVFormat pcm_alaw_format;
 165 extern AVFormat rawvideo_format;
 166
 167 /* ffm.c */
 168 extern AVFormat ffm_format;
 169
 170 /* formats.c */
 171
 172 #define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24))
 173 #define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24))
 174
 175 void register_avformat(AVFormat *format);
 176 AVFormat *guess_format(const char *short_name, const char *filename, const char *mime_type);
 177
 178 int strstart(const char *str, const char *val, const char **ptr);
 179 void nstrcpy(char *buf, int buf_size, const char *str);
 180 int match_ext(const char *filename, const char *extensions);
 181
 182 void register_all(void);
 183
 184 INT64 gettime(void);
 185
 186 typedef struct FifoBuffer {
 187     UINT8 *buffer;
 188     UINT8 *rptr, *wptr, *end;
 189 } FifoBuffer;
 190
 191 int fifo_init(FifoBuffer *f, int size);
 192 void fifo_free(FifoBuffer *f);
 193 int fifo_size(FifoBuffer *f, UINT8 *rptr);
 194 int fifo_read(FifoBuffer *f, UINT8 *buf, int buf_size, UINT8 **rptr_ptr);
 195 void fifo_write(FifoBuffer *f, UINT8 *buf, int size, UINT8 **wptr_ptr);
 196
 197 AVFormatContext *av_open_input_file(const char *filename,
 198                                     const char *format_name,
 199                                     int buf_size,
 200                                     AVFormatParameters *ap);
 201 int av_read_packet(AVFormatContext *s, AVPacket *pkt);
 202 void av_close_input_file(AVFormatContext *s);
 203
 204 int av_write_packet(AVFormatContext *s, AVPacket *pkt, int force_pts);
 205
 206 void dump_format(AVFormatContext *ic,
 207                  int index,
 208                  const char *url,
 209                  int is_output);
 210 int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
 211 INT64 gettime(void);
 212 INT64 parse_date(const char *datestr, int duration);
 213
 214 /* ffm specific for ffserver */
 215 #define FFM_PACKET_SIZE 4096
 216 offset_t ffm_read_write_index(int fd);
 217 void ffm_write_write_index(int fd, offset_t pos);
 218 void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
 219
 220 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
 221
 222 int get_frame_filename(char *buf, int buf_size,
 223                        const char *path, int number);
 224
 225 /* grab/output specific */
 226 extern AVFormat video_grab_device_format;
 227 extern AVFormat audio_device_format;
 228
 229 extern const char *v4l_device;
 230 extern const char *audio_device;