libs/ardour/capturing_processor.cc

   1 /*
   2     Copyright (C) 2011 Paul Davis
   3     Author: Sakari Bergen
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #include "ardour/capturing_processor.h"
  22 #include "ardour/session.h"
  23 #include "ardour/audioengine.h"
  24
  25 #include "i18n.h"
  26
  27 namespace ARDOUR {
  28
  29 CapturingProcessor::CapturingProcessor (Session & session)
  30         : Processor (session, X_("capture point"))
  31         , block_size (session.engine().frames_per_cycle())
  32 {
  33         realloc_buffers ();
  34 }
  35
  36 CapturingProcessor::~CapturingProcessor()
  37 {
  38 }
  39
  40 int
  41 CapturingProcessor::set_block_size (pframes_t nframes)
  42 {
  43         block_size = nframes;
  44         realloc_buffers();
  45         return 0;
  46 }
  47
  48 void
  49 CapturingProcessor::run (BufferSet& bufs, framepos_t, framepos_t, pframes_t nframes, bool)
  50 {
  51         if (active()) {
  52                 capture_buffers.read_from (bufs, nframes);
  53         }
  54 }
  55
  56 bool
  57 CapturingProcessor::configure_io (ChanCount in, ChanCount out)
  58 {
  59         Processor::configure_io (in, out);
  60         realloc_buffers();
  61         return true;
  62 }
  63
  64 bool
  65 CapturingProcessor::can_support_io_configuration (const ChanCount& in, ChanCount& out) const
  66 {
  67         out = in;
  68         return true;
  69 }
  70
  71 void
  72 CapturingProcessor::realloc_buffers()
  73 {
  74         capture_buffers.ensure_buffers (_configured_input, block_size);
  75 }
  76
  77 XMLNode &
  78 CapturingProcessor::state (bool full)
  79 {
  80         XMLNode& node = Processor::state (full);
  81
  82         node.add_property (X_("type"), X_("capture"));
  83         return node;
  84 }
  85
  86 } // namespace ARDOUR