on session-load: skip output-change-handler until IOs are restored

[ardour.git] / libs / ardour / audio_diskstream.cc

diff --git a/libs/ardour/audio_diskstream.cc b/libs/ardour/audio_diskstream.cc
index 8378fa210ce009697ff9416603da4880adc588f6..c302e06681ca05f394b14c7451eafafb6e27501b 100644 (file)
--- a/libs/ardour/audio_diskstream.cc
+++ b/libs/ardour/audio_diskstream.cc
@@ -408,7 +408,7 @@ AudioDiskstream::prepare_record_status(framepos_t capture_start_frame)
  *      that someone can read playback_distance worth of data from.
  */
 int
-AudioDiskstream::process (framepos_t transport_frame, pframes_t nframes, framecnt_t& playback_distance)
+AudioDiskstream::process (BufferSet& bufs, framepos_t transport_frame, pframes_t nframes, framecnt_t& playback_distance, bool need_disk_signal)
 {
        uint32_t n;
        boost::shared_ptr<ChannelList> c = channels.reader();
@@ -494,9 +494,9 @@ AudioDiskstream::process (framepos_t transport_frame, pframes_t nframes, framecn
                                assert(ap);
                                assert(rec_nframes <= (framecnt_t) ap->get_audio_buffer(nframes).capacity());
 
-                               Sample *buf = ap->get_audio_buffer (nframes).data (rec_offset);
+                               Sample *buf = bufs.get_audio (n).data(rec_offset);
                                memcpy (chaninfo->current_capture_buffer, buf, sizeof (Sample) * rec_nframes);
-
+                               
                        } else {
 
                                framecnt_t total = chaninfo->capture_vector.len[0] + chaninfo->capture_vector.len[1];
@@ -509,7 +509,7 @@ AudioDiskstream::process (framepos_t transport_frame, pframes_t nframes, framecn
                                boost::shared_ptr<AudioPort> const ap = _io->audio (n);
                                assert(ap);
 
-                               Sample* buf = ap->get_audio_buffer(nframes).data (rec_offset);
+                               Sample *buf = bufs.get_audio (n).data(rec_offset);
                                framecnt_t first = chaninfo->capture_vector.len[0];
 
                                memcpy (chaninfo->capture_wrap_buffer, buf, sizeof (Sample) * first);
@@ -618,6 +618,8 @@ AudioDiskstream::process (framepos_t transport_frame, pframes_t nframes, framecn
                                           as our current_playback_buffer.
                                        */
 
+                                       assert(wrap_buffer_size >= necessary_samples);
+
                                        /* Copy buf[0] from playback_buf */
                                        memcpy ((char *) chaninfo->playback_wrap_buffer,
                                                        chaninfo->playback_vector.buf[0],
@@ -655,6 +657,46 @@ AudioDiskstream::process (framepos_t transport_frame, pframes_t nframes, framecn
                _speed = _target_speed;
        }
 
+       if (need_disk_signal) {
+
+               /* copy data over to buffer set */
+               
+               size_t n_buffers = bufs.count().n_audio();
+               size_t n_chans = c->size();
+               gain_t scaling = 1.0f;
+               
+               if (n_chans > n_buffers) {
+                       scaling = ((float) n_buffers)/n_chans;
+               }
+
+               for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
+                       
+                       AudioBuffer& buf (bufs.get_audio (n%n_buffers));
+                       ChannelInfo* chaninfo (*chan);
+                       
+                       if (n < n_chans) {
+                               if (scaling != 1.0f) {
+                                       buf.read_from_with_gain (chaninfo->current_playback_buffer, nframes, scaling);
+                               } else {
+                                       buf.read_from (chaninfo->current_playback_buffer, nframes);
+                               }
+                       } else {
+                               if (scaling != 1.0f) {
+                                       buf.accumulate_with_gain_from (chaninfo->current_playback_buffer, nframes, scaling);
+                               } else {
+                                       buf.accumulate_from (chaninfo->current_playback_buffer, nframes);
+                               }
+                       }
+               }
+
+               /* leave the MIDI count alone */
+               ChanCount cnt (DataType::AUDIO, n_chans);
+               cnt.set (DataType::MIDI, bufs.count().n_midi());
+               bufs.set_count (cnt);
+       
+               /* extra buffers will already be silent, so leave them alone */
+       }
+
        return 0;
 }
 
@@ -1661,6 +1703,8 @@ AudioDiskstream::set_record_enabled (bool yn)
                } else {
                        disengage_record_enable ();
                }
+
+               RecordEnableChanged (); /* EMIT SIGNAL */
        }
 }
 
@@ -1697,8 +1741,6 @@ AudioDiskstream::prep_record_enable ()
                }
        }
 
-       RecordEnableChanged (); /* EMIT SIGNAL */
-
        return true;
 }
 
@@ -1712,7 +1754,6 @@ AudioDiskstream::prep_record_disable ()
                }
        }
        capturing_sources.clear ();
-       RecordEnableChanged (); /* EMIT SIGNAL */
 
        return true;
 }
@@ -1953,7 +1994,7 @@ AudioDiskstream::allocate_temporary_buffers ()
        */
 
        double const sp = max (fabsf (_actual_speed), 1.2f);
-       framecnt_t required_wrap_size = (framecnt_t) floor (_session.get_block_size() * sp) + 1;
+       framecnt_t required_wrap_size = (framecnt_t) ceil (_session.get_block_size() * sp) + 2;
 
        if (required_wrap_size > wrap_buffer_size) {
 
@@ -2127,7 +2168,7 @@ AudioDiskstream::use_pending_capture_data (XMLNode& node)
                                fs = boost::dynamic_pointer_cast<AudioFileSource> (
                                        SourceFactory::createWritable (
                                                DataType::AUDIO, _session,
-                                               prop->value(), string(), false, _session.frame_rate()));
+                                               prop->value(), false, _session.frame_rate()));
                        }
 
                        catch (failed_constructor& err) {