CoreAudioSource moved to coreaudiosource.cc.

Compiles with new libsndfile class hierarchy.


git-svn-id: svn://localhost/ardour2/trunk@647 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 218 insertions, 0 deletions

diff --git a/libs/ardour/coreaudiosource.cc b/libs/ardour/coreaudiosource.cc
new file mode 100644
index 0000000000..55409a8524
--- /dev/null
+++ b/libs/ardour/coreaudiosource.cc
@@ -0,0 +1,218 @@
+/*
+    Copyright (C) 2006 Paul Davis 
+
+    This program 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.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <pbd/error.h>
+#include <ardour/coreaudiosource.h>
+
+#include "i18n.h"
+
+#include <AudioToolbox/AudioFormat.h>
+
+using namespace ARDOUR;
+using namespace PBD;
+
+CoreAudioSource::CoreAudioSource (const XMLNode& node)
+	: AudioFileSource (node)
+{
+	init (_name);
+	
+	AudioSourceCreated (this); /* EMIT SIGNAL */
+}
+
+CoreAudioSource::CoreAudioSource (const string& idstr, Flag flags)
+	: AudioFileSource(idstr, flags)
+{
+	init (idstr);
+
+	AudioSourceCreated (this); /* EMIT SIGNAL */
+}
+
+void 
+CoreAudioSource::init (const string& idstr)
+{
+	string::size_type pos;
+	string file;
+
+	tmpbuf = 0;
+	tmpbufsize = 0;
+	af = 0;
+	OSStatus err = noErr;
+
+	_name = idstr;
+
+	if ((pos = idstr.find_last_of (':')) == string::npos) {
+		channel = 0;
+		file = idstr;
+	} else {
+		channel = atoi (idstr.substr (pos+1).c_str());
+		file = idstr.substr (0, pos);
+	}
+
+	/* note that we temporarily truncated _id at the colon */
+	FSRef fsr;
+	err = FSPathMakeRef ((UInt8*)file.c_str(), &fsr, 0);
+	if (err != noErr) {
+		cerr << "FSPathMakeRef " << err << endl;
+		throw failed_constructor();
+	}
+
+	err = ExtAudioFileOpen (&fsr, &af);
+	if (err != noErr) {
+		cerr << "ExtAudioFileOpen " << err << endl;
+		ExtAudioFileDispose (af);
+		throw failed_constructor();
+	}
+
+	AudioStreamBasicDescription file_asbd;
+	memset(&file_asbd, 0, sizeof(AudioStreamBasicDescription));
+	size_t asbd_size = sizeof(AudioStreamBasicDescription);
+	err = ExtAudioFileGetProperty(af,
+			kExtAudioFileProperty_FileDataFormat, &asbd_size, &file_asbd);
+	if (err != noErr) {
+		cerr << "ExtAudioFileGetProperty1 " << err << endl;
+		ExtAudioFileDispose (af);
+		throw failed_constructor();
+	}
+	n_channels = file_asbd.mChannelsPerFrame;
+
+	cerr << "number of channels: " << n_channels << endl;
+	
+	if (channel >= n_channels) {
+		error << string_compose(_("CoreAudioSource: file only contains %1 channels; %2 is invalid as a channel number"), n_channels, channel) << endmsg;
+		ExtAudioFileDispose (af);
+		throw failed_constructor();
+	}
+
+	int64_t ca_frames;
+	size_t prop_size = sizeof(int64_t);
+
+	err = ExtAudioFileGetProperty(af, kExtAudioFileProperty_FileLengthFrames, &prop_size, &ca_frames);
+	if (err != noErr) {
+		cerr << "ExtAudioFileGetProperty2 " << err << endl;
+		ExtAudioFileDispose (af);
+		throw failed_constructor();
+	}
+
+	_length = ca_frames;
+	_path = file;
+
+	AudioStreamBasicDescription client_asbd;
+	memset(&client_asbd, 0, sizeof(AudioStreamBasicDescription));
+	client_asbd.mSampleRate = file_asbd.mSampleRate;
+	client_asbd.mFormatID = kAudioFormatLinearPCM;
+	client_asbd.mFormatFlags = kLinearPCMFormatFlagIsFloat;
+	client_asbd.mBytesPerPacket = file_asbd.mChannelsPerFrame * 4;
+	client_asbd.mFramesPerPacket = 1;
+	client_asbd.mBytesPerFrame = client_asbd.mBytesPerPacket;
+	client_asbd.mChannelsPerFrame = file_asbd.mChannelsPerFrame;
+	client_asbd.mBitsPerChannel = 32;
+
+	err = ExtAudioFileSetProperty (af, kExtAudioFileProperty_ClientDataFormat, asbd_size, &client_asbd);
+	if (err != noErr) {
+		cerr << "ExtAudioFileSetProperty3 " << err << endl;
+		ExtAudioFileDispose (af);
+		throw failed_constructor ();
+	}
+	
+	if (_build_peakfiles) {
+		if (initialize_peakfile (false, file)) {
+			error << "initialize peakfile failed" << endmsg;
+			ExtAudioFileDispose (af);
+			throw failed_constructor ();
+		}
+	}
+}
+
+CoreAudioSource::~CoreAudioSource ()
+{
+	GoingAway (this); /* EMIT SIGNAL */
+
+	if (af) {
+		ExtAudioFileDispose (af);
+	}
+
+	if (tmpbuf) {
+		delete [] tmpbuf;
+	}
+}
+
+jack_nframes_t
+CoreAudioSource::read_unlocked (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const
+{
+	OSStatus err = noErr;
+
+	err = ExtAudioFileSeek(af, start);
+	if (err != noErr) {
+		error << string_compose(_("CoreAudioSource: could not seek to frame %1 within %2 (%3)"), start, _name.substr (1), err) << endmsg;
+		return 0;
+	}
+
+	AudioBufferList abl;
+	abl.mNumberBuffers = 1;
+	abl.mBuffers[0].mNumberChannels = n_channels;
+	abl.mBuffers[0].mDataByteSize = cnt * sizeof(Sample);
+	abl.mBuffers[0].mData = dst;
+
+	if (n_channels == 1) {
+		err = ExtAudioFileRead(af, (UInt32*) &cnt, &abl);
+		_read_data_count = cnt * sizeof(float);
+		return cnt;
+	}
+
+	uint32_t real_cnt = cnt * n_channels;
+
+	{
+		Glib::Mutex::Lock lm (_tmpbuf_lock);
+		
+		if (tmpbufsize < real_cnt) {
+			
+			if (tmpbuf) {
+				delete [] tmpbuf;
+			}
+			tmpbufsize = real_cnt;
+			tmpbuf = new float[tmpbufsize];
+		}
+
+		abl.mBuffers[0].mDataByteSize = real_cnt * sizeof(Sample);
+		abl.mBuffers[0].mData = tmpbuf;
+		
+		err = ExtAudioFileRead(af, (UInt32*) &real_cnt, &abl);
+		float *ptr = tmpbuf + channel;
+		real_cnt /= n_channels;
+		
+		/* stride through the interleaved data */
+		
+		for (uint32_t n = 0; n < real_cnt; ++n) {
+			dst[n] = *ptr;
+			ptr += n_channels;
+		}
+	}
+
+	_read_data_count = cnt * sizeof(float);
+		
+	return real_cnt;
+}
+
+float
+CoreAudioSource::sample_rate() const
+{
+	/* XXX taybin fill me in please */
+
+	return 44100.0f;
+}