From 881e5d0783d66de0d3efe4b633aa413a277c5b18 Mon Sep 17 00:00:00 2001 From: arpi Date: Sat, 20 Oct 2001 18:49:08 +0000 Subject: libdemuxer... git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2311 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libmpdemux/demuxer.h | 155 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 155 insertions(+) create mode 100644 libmpdemux/demuxer.h (limited to 'libmpdemux/demuxer.h') diff --git a/libmpdemux/demuxer.h b/libmpdemux/demuxer.h new file mode 100644 index 0000000000..0cb3eea22e --- /dev/null +++ b/libmpdemux/demuxer.h @@ -0,0 +1,155 @@ + +#include "config.h" + +#define MAX_PACKS 4096 +#define MAX_PACK_BYTES 0x800000 + +#define DEMUXER_TYPE_UNKNOWN 0 +#define DEMUXER_TYPE_MPEG_ES 1 +#define DEMUXER_TYPE_MPEG_PS 2 +#define DEMUXER_TYPE_AVI 3 +#define DEMUXER_TYPE_AVI_NI 4 +#define DEMUXER_TYPE_AVI_NINI 5 +#define DEMUXER_TYPE_ASF 6 +#define DEMUXER_TYPE_MOV 7 + +#define DEMUXER_TIME_NONE 0 +#define DEMUXER_TIME_PTS 1 +#define DEMUXER_TIME_FILE 2 +#define DEMUXER_TIME_BPS 3 + + +// Holds one packet/frame/whatever +typedef struct demux_packet_st { + int len; + float pts; + off_t pos; // position in index (AVI) or file (MPG) + unsigned char* buffer; + int flags; // keyframe, etc + struct demux_packet_st* next; +} demux_packet_t; + +typedef struct { + int buffer_pos; // current buffer position + int buffer_size; // current buffer size + unsigned char* buffer; // current buffer + float pts; // current buffer's pts + int pts_bytes; // number of bytes read after last pts stamp + int eof; // end of demuxed stream? (true if all buffer empty) + off_t pos; // position in the input stream (file) + off_t dpos; // position in the demuxed stream + int pack_no; // serial number of packet + int flags; // flags of current packet (keyframe etc) +//--------------- + int packs; // number of packets in buffer + int bytes; // total bytes of packets in buffer + demux_packet_t *first; // read to current buffer from here + demux_packet_t *last; // append new packets from input stream to here + int id; // stream ID (for multiple audio/video streams) + struct demuxer_st *demuxer; // parent demuxer structure (stream handler) +// ---- asf ----- + demux_packet_t *asf_packet; // read asf fragments here + int asf_seq; +// ---- stream header ---- + void* sh; +} demux_stream_t; + +typedef struct demuxer_st { + stream_t *stream; + int synced; // stream synced (used by mpeg) + off_t filepos; // input stream current pos. + int type; // demuxer type: mpeg PS, mpeg ES, avi, avi-ni, avi-nini, asf + int file_format; // file format: mpeg/avi/asf + off_t movi_start; + off_t movi_end; + int seekable; // flag + // + demux_stream_t *audio; // audio buffer/demuxer + demux_stream_t *video; // video buffer/demuxer + demux_stream_t *sub; // dvd subtitle buffer/demuxer + + // stream headers: + void* a_streams[256]; // audio streams (sh_audio_t) + void* v_streams[256]; // video sterams (sh_video_t) + char s_streams[32]; // dvd subtitles (flag) + + void* priv; // fileformat-dependent data +} demuxer_t; + +inline static demux_packet_t* new_demux_packet(int len){ + demux_packet_t* dp=malloc(sizeof(demux_packet_t)); + dp->len=len; + dp->buffer=malloc(len); + dp->next=NULL; + dp->pts=0; + dp->pos=0; + dp->flags=0; + return dp; +} + +inline static void free_demux_packet(demux_packet_t* dp){ + free(dp->buffer); + free(dp); +} + +demux_stream_t* new_demuxer_stream(struct demuxer_st *demuxer,int id); +demuxer_t* new_demuxer(stream_t *stream,int type,int a_id,int v_id,int s_id); +void free_demuxer_stream(demux_stream_t *ds); +void free_demuxer(demuxer_t *demuxer); + +void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp); +void ds_read_packet(demux_stream_t *ds,stream_t *stream,int len,float pts,off_t pos,int flags); + +int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds); +int ds_fill_buffer(demux_stream_t *ds); + +inline static off_t ds_tell(demux_stream_t *ds){ + return (ds->dpos-ds->buffer_size)+ds->buffer_pos; +} + +inline static int ds_tell_pts(demux_stream_t *ds){ + return (ds->pts_bytes-ds->buffer_size)+ds->buffer_pos; +} + +int demux_read_data(demux_stream_t *ds,unsigned char* mem,int len); +int demux_read_data_pack(demux_stream_t *ds,unsigned char* mem,int len); + +#if 1 +#define demux_getc(ds) (\ + (ds->buffer_posbuffer_size) ? ds->buffer[ds->buffer_pos++] \ + :((!ds_fill_buffer(ds))? (-1) : ds->buffer[ds->buffer_pos++] ) ) +#else +inline static int demux_getc(demux_stream_t *ds){ + if(ds->buffer_pos>=ds->buffer_size){ + if(!ds_fill_buffer(ds)){ +// printf("DEMUX_GETC: EOF reached!\n"); + return -1; // EOF + } + } +// printf("[%02X]",ds->buffer[ds->buffer_pos]); + return ds->buffer[ds->buffer_pos++]; +} +#endif + +void ds_free_packs(demux_stream_t *ds); +int ds_get_packet(demux_stream_t *ds,unsigned char **start); +int ds_get_packet_sub(demux_stream_t *ds,unsigned char **start); + + +static inline int avi_stream_id(unsigned int id){ + unsigned char *p=(unsigned char *)&id; + unsigned char a,b; +#if WORDS_BIGENDIAN + a=p[3]-'0'; b=p[2]-'0'; +#else + a=p[0]-'0'; b=p[1]-'0'; +#endif + if(a>9 || b>9) return 100; // invalid ID + return a*10+b; +} + +demuxer_t* demux_open(stream_t *stream,int file_format,int aid,int vid,int sid); +int demux_seek(demuxer_t *demuxer,float rel_seek_secs,int flags); + + + -- cgit v1.2.3