From c253da523347e51d39eddfde891f5597867bfe99 Mon Sep 17 00:00:00 2001 From: Paul Davis Date: Thu, 15 Nov 2007 19:23:21 +0000 Subject: first pass (and hopefully correct) attempt at reading only necessary regions in Playlist::read() git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@2680 d708f5d6-7413-0410-9779-e7cbd77b26cf --- libs/ardour/audio_playlist.cc | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'libs/ardour/audio_playlist.cc') diff --git a/libs/ardour/audio_playlist.cc b/libs/ardour/audio_playlist.cc index 0a27266866..c883856cf8 100644 --- a/libs/ardour/audio_playlist.cc +++ b/libs/ardour/audio_playlist.cc @@ -152,11 +152,18 @@ AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nf skip_frames = 0; _read_data_count = 0; + RegionList* rlist = regions_to_read (start, start+cnt); + + if (rlist->empty()) { + delete rlist; + return cnt; + } + map > > relevant_regions; map > > relevant_xfades; vector relevant_layers; - for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) { + for (RegionList::iterator i = rlist->begin(); i != rlist->end(); ++i) { if ((*i)->coverage (start, end) != OverlapNone) { relevant_regions[(*i)->layer()].push_back (*i); relevant_layers.push_back ((*i)->layer()); @@ -201,6 +208,7 @@ AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nf } } + delete rlist; return ret; } -- cgit v1.2.3