From a0a16d9cdb9d0522053c2e830b7440e9e96231a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20Gl=C3=B6ckner?= <cgloeckner@freenet.de>
Date: Wed, 20 Jan 2016 17:46:50 +0100
Subject: [incomplete] added MidifileInputEngine and WavfileOutputEngine
---
drumgizmo/output/wavfile.cc | 98 +++++++++++++++++++
drumgizmo/output/wavfile.h | 223 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 321 insertions(+)
create mode 100644 drumgizmo/output/wavfile.cc
create mode 100644 drumgizmo/output/wavfile.h
(limited to 'drumgizmo/output')
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 Gl�ckner
+ * 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;
+}
diff --git a/drumgizmo/output/wavfile.h b/drumgizmo/output/wavfile.h
new file mode 100644
index 0000000..0f93049
--- /dev/null
+++ b/drumgizmo/output/wavfile.h
@@ -0,0 +1,223 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * wavfile.h
+ *
+ * Mi 20. Jan 16:57:16 CET 2016
+ * Copyright 2016 Christian Gl�ckner
+ * 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.
+ */
+#pragma once
+#include <string>
+#include <vector>
+
+#include <sndfile.h>
+
+#include "audiooutputengine.h"
+
+class WavfileOutputEngine
+ : public AudioOutputEngine {
+ public:
+ WavfileOutputEngine();
+ ~WavfileOutputEngine();
+
+ // based on AudioOutputEngine
+ bool init(Channels channels) override;
+ void setParm(std::string parm, std::string value) override;
+ bool start() override;
+ void stop() override;
+ void pre(size_t nsamples) override;
+ void run(int ch, sample_t* samples, size_t nsamples) override;
+ void post(size_t nsamples) override;
+ size_t samplerate() override;
+
+ private:
+ SF_INFO info;
+ std::vector<SNDFILE*> channels;
+ size_t num_channels;
+
+ std::string file;
+};
+
+
+
+#include <stdlib.h>
+
+#include <audiotypes.h>
+#include <string>
+#include <memory.h>
+
+
+class WavFile {
+public:
+ WavFile();
+ ~WavFile();
+ bool init(int channels, char *cnames[]);
+ void setParm(std::string parm, std::string value);
+ bool start();
+ void stop();
+ void pre(size_t size);
+ void run(int channel, sample_t* data, size_t size);
+ void post(size_t size);
+ size_t samplerate();
+
+private:
+
+};
+
+WavFile::WavFile()
+{
+ fh = NULL;
+ filename = "output";
+
+ memset(&sf_info, 0, sizeof(sf_info));
+ sf_info.channels = 1;//channels;
+ sf_info.format = SF_FORMAT_WAV | SF_FORMAT_FLOAT;
+ sf_info.samplerate = 44100;
+}
+
+WavFile::~WavFile()
+{
+ if(fh == NULL) return;
+
+ for(size_t i override; i < channels; i++) {
+ if(fh[i]) sf_close(fh[i]);
+ }
+
+ if(fh) free(fh);
+}
+
+bool WavFile::init(int channels, char *cnames[])
+{
+ this->channels = channels;
+
+ fh = (SNDFILE **)malloc(sizeof(SNDFILE *)*channels);
+
+ for(size_t i override; i < this->channels; i++) fh[i] = NULL;
+
+ for(size_t i override; i < this->channels; i++) {
+ char fname[512];
+
+ sprintf(fname, "%s%s-%d.wav", filename.c_str(), cnames[i], (int)i);
+ // printf("[%s]\n", fname);
+
+ fh[i] = sf_open(fname, SFM_WRITE, &sf_info);
+ if(!fh[i]) {
+ printf("Write error...\n");
+ return false;
+ }
+ }
+
+ return true;
+}
+
+void WavFile::setParm(std::string parm, std::string value)
+{
+ if(parm == "file") filename = value;
+ if(parm == "srate") sf_info.samplerate = atoi(value.c_str());
+}
+
+bool WavFile::start()
+{
+ return true;
+}
+
+void WavFile::stop()
+{
+}
+
+void WavFile::pre(size_t size)
+{
+}
+
+void WavFile::run(int channel, sample_t* cdata, size_t csize)
+{
+ if(channel < (int)channels) sf_writef_float(fh[channel], cdata, csize);
+}
+
+void WavFile::post(size_t size)
+{
+}
+
+size_t WavFile::samplerate()
+{
+ return sf_info.samplerate;
+}
+
+extern "C" {
+ void *create()
+ {
+ return new WavFile();
+ }
+
+ void destroy(void *h)
+ {
+ WavFile *sndfile = (WavFile*)h;
+ delete sndfile;
+ }
+
+ bool init(void *h, int cs, char *cnames[])
+ {
+ WavFile *sndfile = (WavFile*)h;
+ return sndfile->init(cs, cnames);
+ }
+
+ void setparm(void *h, const char *parm, const char *value)
+ {
+ WavFile *sndfile = (WavFile*)h;
+ sndfile->setParm(parm, value);
+ }
+
+ bool start(void *h)
+ {
+ WavFile *sndfile = (WavFile*)h;
+ return sndfile->start();
+ }
+
+ void stop(void *h)
+ {
+ WavFile *sndfile = (WavFile*)h;
+ sndfile->stop();
+ }
+
+ void pre(void *h, size_t s)
+ {
+ WavFile *sndfile = (WavFile*)h;
+ sndfile->pre(s);
+ }
+
+ void run(void *h, int ch, sample_t *data, size_t size)
+ {
+ WavFile *sndfile = (WavFile*)h;
+ sndfile->run(ch, data, size);
+ }
+
+ void post(void *h, size_t s)
+ {
+ WavFile *sndfile = (WavFile*)h;
+ sndfile->post(s);
+ }
+
+ size_t samplerate(void *h)
+ {
+ WavFile *wavfile = (WavFile*)h;
+ return wavfile->samplerate();
+ }
+}
--
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