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authorChristian Glöckner <cgloeckner@freenet.de>2016-01-20 17:46:50 +0100
committerAndré Nusser <andre.nusser@googlemail.com>2016-02-09 09:02:18 +0100
commita0a16d9cdb9d0522053c2e830b7440e9e96231a9 (patch)
tree87649e77b49cf0f3c22d115f666f49f88f6ed541 /drumgizmo/output/wavfile.cc
parent9646045b130b39b24e1f8f526bbcb6e1fe04459b (diff)
[incomplete] added MidifileInputEngine and WavfileOutputEngine
Diffstat (limited to 'drumgizmo/output/wavfile.cc')
-rw-r--r--drumgizmo/output/wavfile.cc98
1 files changed, 98 insertions, 0 deletions
diff --git a/drumgizmo/output/wavfile.cc b/drumgizmo/output/wavfile.cc
new file mode 100644
index 0000000..e0c18cb
--- /dev/null
+++ b/drumgizmo/output/wavfile.cc
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * wavfile.cc
+ *
+ * Mi 20. Jan 16:57:16 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 "wavfile.h"
+
+WavfileOutputEngine::WavfileOutputEngine()
+ : info{}
+ , channels{}
+ , file{"output"} {
+ info.frames = 0;
+ info.samplerrate = 44100;
+ info.channels = 1;
+ info.format = SF_FORMAT_WAV | SF_FORMAT_FLOAT;
+ info.sections = 0;
+ info.seekable = 0;
+}
+
+WavfileOutputEngine::~WavfileOutputEngine() {
+ for (auto& ptr: channels) {
+ if (ptr != nullptr) {
+ sf_close(ptr);
+ }
+ }
+}
+
+bool WavfileOutputEngine::init(Channels channels) {
+ channels.clear(),
+ channels.resize(channels.size(), nullptr);
+ for (auto i = 0u; i < channels.size(); ++i) {
+ // write channel to file
+ auto fname = file + channels[i]->name + "-" + std::to_string(i);
+ channels[i] = sf_open(fname, SFM_WRITE, &info);
+ if (channels[i] == nullptr) {
+ printf("Write error...\n");
+ return false;
+ }
+ }
+ return true;
+}
+
+void WavfileOutputEngine::setParm(std::string parm, std::string value) {
+ if (parm == "file") {
+ file = value;
+ } else if (parm == "srate") {[
+ info.samplerate = std::stoi(value);
+ } else {
+ printf("Unsupported wavfile parameter '%s'\n", parm);
+ }
+}
+
+bool WavfileOutputEngine::start() {
+ return true;
+}
+
+void WavfileOutputEngine::stop() {
+}
+
+void WavfileOutputEngine::pre(size_t nsamples) {
+}
+
+void WavfileOutputEngine::run(int ch, sample_t* samples, size_t nsamples) {
+ if (ch >= channels.size()) {
+ printf("Invalid channel %d (%d channels available)", ch, channels.size());
+ return;
+ }
+
+ sf_writef_float(channels[ch], samples, nsampels);
+}
+
+void WavfileOutputEngine::post(size_t nsamples) {
+}
+
+size_t WavfileOutputEngine::samplerate() {
+ return info.samplerate;
+}