X-Git-Url: http://git.cinelerra-gg.org/git/?a=blobdiff_plain;f=cinelerra-5.1%2Flibzmpeg3%2Fvtrack.C;fp=cinelerra-5.1%2Flibzmpeg3%2Fvtrack.C;h=67369bfe39351a9a973f551b7ca9b59ceefae2f1;hb=30bdb85eb33a8ee7ba675038a86c6be59c43d7bd;hp=0000000000000000000000000000000000000000;hpb=52fcc46226f9df46f9ce9d0566dc568455a7db0b;p=goodguy%2Fhistory.git

diff --git a/cinelerra-5.1/libzmpeg3/vtrack.C b/cinelerra-5.1/libzmpeg3/vtrack.C
new file mode 100644
index 00000000..67369bfe
--- /dev/null
+++ b/cinelerra-5.1/libzmpeg3/vtrack.C
@@ -0,0 +1,179 @@
+#include "libzmpeg3.h"
+
+zvtrack_t::
+vtrack_t(zmpeg3_t *zsrc, int custom_id, demuxer_t *demux, int no)
+{
+  demuxer = new demuxer_t(zsrc, 0, this, custom_id);
+  frame_cache = new cache_t();
+  if( zsrc->seekable ) {
+    demux->copy_titles(demuxer);
+  }
+
+  current_position = 0;
+  number = no;
+  pid = custom_id;
+  pts_origin = -1.;
+  reset_pts();
+
+// Copy pointers
+  if( zsrc->frame_offsets ) {
+    frame_offsets = zsrc->frame_offsets[number];
+    total_frame_offsets = zsrc->total_frame_offsets[number];
+    keyframe_numbers = zsrc->keyframe_numbers[number];
+    total_keyframe_numbers = zsrc->total_keyframe_numbers[number];
+    demuxer->stream_end = zsrc->video_eof[number];
+  }
+}
+
+zvtrack_t *zmpeg3_t::
+new_vtrack_t(int custom_id, demuxer_t *demux, int number)
+{
+  vtrack_t *new_vtrack = new vtrack_t(this,custom_id,demux,number);
+
+/* Get information about the track here. */
+  new_vtrack->video = new_video_t(new_vtrack);
+
+  if( !new_vtrack->video ) { /* Failed */
+    delete new_vtrack;
+    new_vtrack = 0;
+  }
+
+  return new_vtrack;
+}
+
+zvtrack_t::
+~vtrack_t()
+{
+  if( video ) delete video;
+  if( demuxer ) delete demuxer;
+  if( private_offsets ) {
+    if( frame_offsets_allocated ) delete [] frame_offsets;
+    if( keyframe_numbers_allocated ) delete [] keyframe_numbers;
+  }
+  delete frame_cache;
+}
+
+void zvtrack_t::
+extend_frame_offsets()
+{
+  if( frame_offsets_allocated <= total_frame_offsets ) {
+    long new_allocation = ZMAX(2*total_frame_offsets, 1024);
+    int64_t *new_offsets = new int64_t[new_allocation];
+    for( int i=0; i<total_frame_offsets; ++i )
+      new_offsets[i] = frame_offsets[i];
+    delete [] frame_offsets;
+    frame_offsets = new_offsets;
+    frame_offsets_allocated = new_allocation;
+  }
+}
+
+void zvtrack_t::
+extend_keyframe_numbers()
+{
+  if( keyframe_numbers_allocated <= total_keyframe_numbers ) {
+    long new_allocation = ZMAX(2*total_keyframe_numbers, 1024);
+    int *new_numbers = new int[new_allocation];
+    for( int i=0; i<total_keyframe_numbers; ++i )
+      new_numbers[i] = keyframe_numbers[i];
+    delete [] keyframe_numbers;
+    keyframe_numbers = new_numbers;
+    keyframe_numbers_allocated = new_allocation;
+  }
+}
+
+void zvtrack_t::
+append_frame(int64_t offset, int is_keyframe)
+{
+  extend_frame_offsets();
+  frame_offsets[total_frame_offsets] = offset;
+
+  if( is_keyframe || total_frame_offsets == 0 ) {
+    extend_keyframe_numbers();
+    keyframe_numbers[total_keyframe_numbers++] = total_frame_offsets;
+  }
+
+  ++total_frame_offsets;
+  private_offsets = 1;
+}
+
+int zvtrack_t::
+find_keyframe_index(int64_t frame)
+{
+  /* l,r boundarys are exclusive (not included) */
+  int l = -1;
+  int r = total_keyframe_numbers;
+  while( (r-l) > 1 ) {
+    int m = (r+l) >> 1;
+    int mframe = keyframe_numbers[m];
+    if( frame == mframe ) return m;
+    if( frame > mframe ) l = m;
+    else r = m;
+  }
+  return l;
+}
+
+void zvtrack_t::update_video_time()
+{
+  double pts = frame_pts;
+  if( video->is_refframe() ) {
+    pts = refframe_pts;
+    refframe_pts = frame_pts;
+  }
+  frame_pts = -1.;
+  if( pts < 0 ) return;
+  if( pts_starttime < 0 && frame_rate > 0 ) {
+    pts_starttime = pts;
+    pts_offset = (double)video->framenum / frame_rate;
+    if( pts_origin < 0. ) pts_origin = pts_starttime - pts_offset;
+  }
+  else if( pts < pts_starttime ) { // check for pts rollover
+    if( pts_starttime-pts > 0x100000000ll / 90000 )
+      pts += 0x200000000ll / 90000;
+  }
+  /* update track time */
+  double vtime = pts_video_time(pts);
+  if( vtime > video_time ) {
+    video_time = vtime;
+    pts_position = video->framenum;
+//zmsgs("track %02x video_time=%f\n",track->pid, vtime);
+  }
+}
+
+double zvtrack_t::get_video_time()
+{
+  double vtime = video_time; 
+  if( vtime >= 0 && frame_rate > 0 ) {
+    vtime += (video->framenum - pts_position) / frame_rate;
+  }
+  return vtime;
+}
+
+void zvtrack_t::
+reset_pts()
+{
+  vskip = 0;
+  demuxer->pes_video_time = -1.;
+  pts_starttime = demuxer->src->pts_padding >= 0 ? -1. : 0.;
+  video_time = -1.;
+  refframe_pts = -1.;
+  frame_pts = -1.;
+  pts_position = 0;
+  pts_offset = 0;
+}
+
+int zvtrack_t::apparent_position()
+{
+  if( !frame_offsets ) return 0;
+  int64_t pos = demuxer->absolute_position();
+  int l = -1;
+  int r = total_frame_offsets;
+  while( (r-l) > 1 ) {
+    int m = (r+l) >> 1;
+    int64_t mpos = frame_offsets[m];
+    if( pos == mpos ) return m;
+    if( pos > mpos ) l = m;
+    else r = m;
+  }   
+  return l;
+}
+