libs/ardour/process_thread.cc

   1 /*
   2     Copyright (C) 2010 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <iostream>
  21
  22 #include "ardour/buffer.h"
  23 #include "ardour/buffer_manager.h"
  24 #include "ardour/buffer_set.h"
  25 #include "ardour/process_thread.h"
  26 #include "ardour/thread_buffers.h"
  27
  28 using namespace ARDOUR;
  29 using namespace Glib;
  30 using namespace std;
  31
  32 static void
  33 release_thread_buffer (void* arg)
  34 {
  35         BufferManager::put_thread_buffers ((ThreadBuffers*) arg);
  36 }
  37
  38 Glib::Threads::Private<ThreadBuffers> ProcessThread::_private_thread_buffers (release_thread_buffer);
  39
  40 void
  41 ProcessThread::init ()
  42 {
  43 }
  44
  45 ProcessThread::ProcessThread ()
  46 {
  47 }
  48
  49 ProcessThread::~ProcessThread ()
  50 {
  51 }
  52
  53 void
  54 ProcessThread::get_buffers ()
  55 {
  56         ThreadBuffers* tb = BufferManager::get_thread_buffers ();
  57
  58         assert (tb);
  59         _private_thread_buffers.set (tb);
  60 }
  61
  62 void
  63 ProcessThread::drop_buffers ()
  64 {
  65         ThreadBuffers* tb = _private_thread_buffers.get();
  66         assert (tb);
  67         BufferManager::put_thread_buffers (tb);
  68         _private_thread_buffers.set (0);
  69 }
  70
  71 BufferSet&
  72 ProcessThread::get_silent_buffers (ChanCount count)
  73 {
  74         ThreadBuffers* tb = _private_thread_buffers.get();
  75         assert (tb);
  76
  77         BufferSet* sb = tb->silent_buffers;
  78         assert (sb);
  79
  80         assert(sb->available() >= count);
  81         sb->set_count(count);
  82
  83         for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
  84                 for (size_t i= 0; i < count.get(*t); ++i) {
  85                         sb->get(*t, i).clear();
  86                 }
  87         }
  88
  89         return *sb;
  90 }
  91
  92 BufferSet&
  93 ProcessThread::get_scratch_buffers (ChanCount count)
  94 {
  95         ThreadBuffers* tb = _private_thread_buffers.get();
  96         assert (tb);
  97
  98         BufferSet* sb = tb->scratch_buffers;
  99         assert (sb);
 100
 101         if (count != ChanCount::ZERO) {
 102                 assert(sb->available() >= count);
 103                 sb->set_count (count);
 104         } else {
 105                 sb->set_count (sb->available());
 106         }
 107
 108         return *sb;
 109 }
 110
 111 BufferSet&
 112 ProcessThread::get_route_buffers (ChanCount count, bool silence)
 113 {
 114         ThreadBuffers* tb = _private_thread_buffers.get();
 115         assert (tb);
 116
 117         BufferSet* sb = tb->route_buffers;
 118         assert (sb);
 119
 120         if (count != ChanCount::ZERO) {
 121                 assert(sb->available() >= count);
 122                 sb->set_count (count);
 123         } else {
 124                 sb->set_count (sb->available());
 125         }
 126
 127         if (silence) {
 128                 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
 129                         for (uint32_t i = 0; i < sb->count().get(*t); ++i) {
 130                                 sb->get(*t, i).clear();
 131                         }
 132                 }
 133         }
 134
 135         return *sb;
 136 }
 137
 138 BufferSet&
 139 ProcessThread::get_mix_buffers (ChanCount count)
 140 {
 141         ThreadBuffers* tb = _private_thread_buffers.get();
 142         assert (tb);
 143
 144         BufferSet* mb = tb->mix_buffers;
 145
 146         assert (mb);
 147         assert (mb->available() >= count);
 148         mb->set_count(count);
 149         return *mb;
 150 }
 151
 152 gain_t*
 153 ProcessThread::gain_automation_buffer()
 154 {
 155         ThreadBuffers* tb = _private_thread_buffers.get();
 156         assert (tb);
 157
 158         gain_t *g =  tb->gain_automation_buffer;
 159         assert (g);
 160         return g;
 161 }
 162
 163 gain_t*
 164 ProcessThread::send_gain_automation_buffer()
 165 {
 166         ThreadBuffers* tb = _private_thread_buffers.get();
 167         assert (tb);
 168
 169         gain_t* g = tb->send_gain_automation_buffer;
 170         assert (g);
 171         return g;
 172 }
 173
 174 pan_t**
 175 ProcessThread::pan_automation_buffer()
 176 {
 177         ThreadBuffers* tb = _private_thread_buffers.get();
 178         assert (tb);
 179
 180         pan_t** p = tb->pan_automation_buffer;
 181         assert (p);
 182         return p;
 183 }