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authorChristian Glöckner <cgloeckner@freenet.de>2016-01-22 12:14:57 +0100
committerAndré Nusser <andre.nusser@googlemail.com>2016-02-09 09:03:16 +0100
commit452815bcb73185013e70d000dcbac84bc23c6160 (patch)
treeb99fb590f15d1325502289d512ed7f03de515c21 /drumgizmo/output/jackaudio.cc
parent614c3474de5798034196b39a8476ded591b1ac34 (diff)
added missing jackaudio.cc
Diffstat (limited to 'drumgizmo/output/jackaudio.cc')
-rw-r--r--drumgizmo/output/jackaudio.cc106
1 files changed, 106 insertions, 0 deletions
diff --git a/drumgizmo/output/jackaudio.cc b/drumgizmo/output/jackaudio.cc
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * jackaudio.cc
+ *
+ * Fr 22. Jan 09:43:30 CET 2016
+ * Copyright 2016 Christian Glöckner
+ * cgloeckner@freenet.de
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include <cassert>
+#include <iostream>
+
+#include "jackaudio.h"
+
+JackaudioOutputEngine::JackaudioOutputEngine(JackClient& client)
+ : client{client}
+ , channels{}
+ , sema{"jackaudio"} {
+ client.add(*this);
+}
+
+JackaudioOutputEngine::~JackaudioOutputEngine() {
+}
+
+bool JackaudioOutputEngine::init(Channels data) {
+ channels.clear();
+ channels.reserve(data.size());
+ auto i = 0u;
+ auto const buffer_size = getBufferSize();
+
+ for (auto const & elem: data) {
+ auto name = std::to_string(i) + "-" + elem.name;
+ // initialize new channel
+ channels.emplace_back(client, buffer_size, name);
+
+ if (channels.back().port == nullptr) {
+ std::cerr << "[JackaudioOutputEngine] Cannot create jack "
+ << "port for channel #" << i << "\n";
+ return false;
+ }
+ ++i;
+ }
+ return true;
+}
+
+void JackaudioOutputEngine::setParm(std::string parm, std::string value) {
+}
+
+bool JackaudioOutputEngine::start() {
+ client.activate();
+ return true;
+}
+
+void JackaudioOutputEngine::stop() {
+}
+
+void JackaudioOutputEngine::pre(size_t nsamples) {
+}
+
+void JackaudioOutputEngine::run(int ch, sample_t* samples, size_t nsamples) {
+ for (auto i = 0u; i < nsamples; ++i) {
+ channels[ch].samples[i] = samples[i];
+ }
+}
+
+void JackaudioOutputEngine::post(size_t nsamples) {
+ sema.wait();
+}
+
+void JackaudioOutputEngine::process(jack_nframes_t num_frames) {
+ assert(num_frames == getBufferSize());
+
+ for (auto& channel: channels) {
+ auto ptr = static_cast<jack_default_audio_sample_t*>(
+ jack_port_get_buffer(channel.port, num_frames));
+ for (auto i = 0u; i < num_frames; ++i) {
+ ptr[i] = channel.samples[i];
+ }
+ }
+ sema.post();
+}
+
+size_t JackaudioOutputEngine::getBufferSize() {
+ return client.getBufferSize();
+}
+
+size_t JackaudioOutputEngine::samplerate() {
+ return client.getSampleRate();
+}