ardour/livetrax
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Proper use of AudioBufferList.

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git-svn-id: svn://localhost/trunk/ardour2@375 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Taybin Rutkin 2006-03-10 22:15:20 +00:00
parent 1e05b4389d
commit b6f309bb85
1 changed files with 13 additions and 8 deletions
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21
libs/ardour/coreaudio_source.cc
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@ -17,6 +17,8 @@
*/
#include <pbd/error.h>
#include <ardour/coreaudio_source.h>
#include "i18n.h"
@ -65,11 +67,13 @@ CoreAudioSource::init (const string& idstr, bool build_peak)
FSRef ref;
err = FSPathMakeRef ((UInt8*)file.c_str(), &ref, 0);
if (err != noErr) {
error << err << endmsg;
throw failed_constructor();
}
err = ExtAudioFileOpen (&ref, &af);
if (err != noErr) {
error << err << endmsg;
ExtAudioFileDispose (af);
throw failed_constructor();
}
@ -80,6 +84,7 @@ CoreAudioSource::init (const string& idstr, bool build_peak)
err = ExtAudioFileGetProperty(af,
kExtAudioFileProperty_FileDataFormat, &absd_size, &absd);
if (err != noErr) {
error << err << endmsg;
ExtAudioFileDispose (af);
throw failed_constructor();
}
@ -87,6 +92,7 @@ CoreAudioSource::init (const string& idstr, bool build_peak)
if (channel >= n_channels) {
error << string_compose(_("CoreAudioSource: file only contains %1 channels; %2 is invalid as a channel number"), n_channels, channel) << endmsg;
error << err << endmsg;
ExtAudioFileDispose (af);
throw failed_constructor();
}
@ -96,6 +102,7 @@ CoreAudioSource::init (const string& idstr, bool build_peak)
err = ExtAudioFileGetProperty(af, kExtAudioFileProperty_FileLengthFrames, &prop_size, &ca_frames);
if (err != noErr) {
error << err << endmsg;
ExtAudioFileDispose (af);
throw failed_constructor();
}
@ -105,6 +112,7 @@ CoreAudioSource::init (const string& idstr, bool build_peak)
if (build_peak) {
if (initialize_peakfile (false, file)) {
error << "initialize peakfile failed" << endmsg;
ExtAudioFileDispose (af);
throw failed_constructor ();
}
@ -135,14 +143,11 @@ CoreAudioSource::read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, ch
return 0;
}
AudioBuffer ab;
ab.mNumberChannels = n_channels;
ab.mDataByteSize = cnt;
ab.mData = dst;
AudioBufferList abl;
abl.mNumberBuffers = 1;
abl.mBuffers[1] = ab;
abl.mBuffers[0].mNumberChannels = n_channels;
abl.mBuffers[0].mDataByteSize = cnt;
abl.mBuffers[0].mData = dst;
if (n_channels == 1) {
err = ExtAudioFileRead(af, (UInt32*) &cnt, &abl);
@ -164,8 +169,8 @@ CoreAudioSource::read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, ch
tmpbuf = new float[tmpbufsize];
}
ab.mDataByteSize = real_cnt;
ab.mData = tmpbuf;
abl.mBuffers[0].mDataByteSize = real_cnt;
abl.mBuffers[0].mData = tmpbuf;
err = ExtAudioFileRead(af, (UInt32*) &real_cnt, &abl);
float *ptr = tmpbuf + channel;