libdemuxer...

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2311 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 155 insertions, 0 deletions

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_pos<ds->buffer_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);
+
+
+