2 Copyright (C) 2006 Paul Davis
3 Written by Taybin Rutkin
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #define __STDC_FORMAT_MACROS
25 #include "pbd/error.h"
26 #include "ardour/coreaudiosource.h"
27 #include "ardour/utils.h"
29 #include <appleutility/CAAudioFile.h>
30 #include <appleutility/CAStreamBasicDescription.h>
34 #include <AudioToolbox/AudioFormat.h>
37 using namespace ARDOUR;
40 CoreAudioSource::CoreAudioSource (Session& s, const XMLNode& node)
42 , AudioFileSource (s, node)
47 CoreAudioSource::CoreAudioSource (Session& s, const string& path, int chn, Flag flags)
48 /* files created this way are never writable or removable */
49 : Source (s, DataType::AUDIO, path, Source::Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy))),
50 AudioFileSource (s, path,
51 Source::Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
58 CoreAudioSource::init_cafile ()
60 /* note that we temporarily truncated _id at the colon */
62 af.Open(_path.c_str());
64 CAStreamBasicDescription file_format (af.GetFileDataFormat());
65 n_channels = file_format.NumberChannels();
67 if (_channel >= n_channels) {
68 error << string_compose("CoreAudioSource: file only contains %1 channels; %2 is invalid as a channel number (%3)", n_channels, _channel, name()) << endmsg;
69 throw failed_constructor();
72 _length = af.GetNumberFrames();
74 CAStreamBasicDescription client_format (file_format);
76 /* set canonial form (PCM, native float packed, 32 bit, with the correct number of channels
77 and interleaved (since we plan to deinterleave ourselves)
80 client_format.SetCanonical(client_format.NumberChannels(), true);
81 af.SetClientFormat (client_format);
83 } catch (CAXException& cax) {
85 error << string_compose(_("CoreAudioSource: cannot open file \"%1\" for %2"),
86 _path, (writable() ? "read+write" : "reading")) << endmsg;
87 throw failed_constructor ();
91 CoreAudioSource::~CoreAudioSource ()
96 CoreAudioSource::safe_read (Sample* dst, nframes_t start, nframes_t cnt, AudioBufferList& abl) const
100 while (nread < cnt) {
103 af.Seek (start+nread);
104 } catch (CAXException& cax) {
105 error << string_compose("CoreAudioSource: %1 to %2 (%3)", cax.mOperation, start+nread, _name.substr (1)) << endmsg;
109 UInt32 new_cnt = cnt - nread;
111 abl.mBuffers[0].mDataByteSize = new_cnt * n_channels * sizeof(Sample);
112 abl.mBuffers[0].mData = dst + nread;
115 af.Read (new_cnt, &abl);
116 } catch (CAXException& cax) {
117 error << string_compose("CoreAudioSource: %1 (%2)", cax.mOperation, _name);
123 if (start+cnt == _length) {
124 /* we really did hit the end */
142 CoreAudioSource::read_unlocked (Sample *dst, sframes_t start, nframes_t cnt) const
147 abl.mNumberBuffers = 1;
148 abl.mBuffers[0].mNumberChannels = n_channels;
150 if (start > _length) {
152 /* read starts beyond end of data, just memset to zero */
156 } else if (start + cnt > _length) {
158 /* read ends beyond end of data, read some, memset the rest */
160 file_cnt = _length - start;
164 /* read is entirely within data */
169 if (file_cnt != cnt) {
170 nframes_t delta = cnt - file_cnt;
171 memset (dst+file_cnt, 0, sizeof (Sample) * delta);
176 if (n_channels == 1) {
177 if (safe_read (dst, start, file_cnt, abl) == 0) {
178 _read_data_count = cnt * sizeof (Sample);
185 Sample* interleave_buf = get_interleave_buffer (file_cnt * n_channels);
187 if (safe_read (interleave_buf, start, file_cnt, abl) != 0) {
191 _read_data_count = cnt * sizeof(float);
193 Sample *ptr = interleave_buf + _channel;
195 /* stride through the interleaved data */
197 for (uint32_t n = 0; n < file_cnt; ++n) {
206 CoreAudioSource::sample_rate() const
208 CAStreamBasicDescription client_asbd;
211 client_asbd = af.GetClientDataFormat ();
212 } catch (CAXException& cax) {
213 error << string_compose("CoreAudioSource: %1 (%2)", cax.mOperation, _name);
217 return client_asbd.mSampleRate;
221 CoreAudioSource::update_header (sframes_t when, struct tm&, time_t)
227 CoreAudioSource::get_soundfile_info (string path, SoundFileInfo& _info, string& error_msg)
230 ExtAudioFileRef af = 0;
235 if (FSPathMakeRef ((UInt8*)path.c_str(), &ref, 0) != noErr) {
239 if (ExtAudioFileOpen(&ref, &af) != noErr) {
243 AudioStreamBasicDescription absd;
244 memset(&absd, 0, sizeof(absd));
245 size = sizeof(AudioStreamBasicDescription);
246 if (ExtAudioFileGetProperty (af, kExtAudioFileProperty_FileDataFormat, &size, &absd) != noErr) {
250 _info.samplerate = absd.mSampleRate;
251 _info.channels = absd.mChannelsPerFrame;
253 size = sizeof(_info.length);
254 if (ExtAudioFileGetProperty(af, kExtAudioFileProperty_FileLengthFrames, &size, &_info.length) != noErr) {
258 size = sizeof(CFStringRef);
259 if (AudioFormatGetProperty(kAudioFormatProperty_FormatName, sizeof(absd), &absd, &size, &name) != noErr) {
263 _info.format_name = "";
265 if (absd.mFormatID == kAudioFormatLinearPCM) {
266 if (absd.mFormatFlags & kAudioFormatFlagIsBigEndian) {
267 _info.format_name += "big-endian";
269 _info.format_name += "little-endian";
273 snprintf (buf, sizeof (buf), " %" PRIu32 " bit", absd.mBitsPerChannel);
274 _info.format_name += buf;
275 _info.format_name += '\n';
277 if (absd.mFormatFlags & kAudioFormatFlagIsFloat) {
278 _info.format_name += "float";
280 if (absd.mFormatFlags & kAudioFormatFlagIsSignedInteger) {
281 _info.format_name += "signed";
283 _info.format_name += "unsigned";
285 /* integer is typical, do not show it */
288 if (_info.channels > 1) {
289 if (absd.mFormatFlags & kAudioFormatFlagIsNonInterleaved) {
290 _info.format_name += " noninterleaved";
292 /* interleaved is the normal case, do not show it */
295 _info.format_name += ' ';
298 switch (absd.mFormatID) {
299 case kAudioFormatLinearPCM:
300 _info.format_name += "PCM";
303 case kAudioFormatAC3:
304 _info.format_name += "AC3";
307 case kAudioFormat60958AC3:
308 _info.format_name += "60958 AC3";
311 case kAudioFormatMPEGLayer1:
312 _info.format_name += "MPEG-1";
315 case kAudioFormatMPEGLayer2:
316 _info.format_name += "MPEG-2";
319 case kAudioFormatMPEGLayer3:
320 _info.format_name += "MPEG-3";
323 case kAudioFormatAppleIMA4:
324 _info.format_name += "IMA-4";
327 case kAudioFormatMPEG4AAC:
328 _info.format_name += "AAC";
331 case kAudioFormatMPEG4CELP:
332 _info.format_name += "CELP";
335 case kAudioFormatMPEG4HVXC:
336 _info.format_name += "HVXC";
339 case kAudioFormatMPEG4TwinVQ:
340 _info.format_name += "TwinVQ";
343 /* these really shouldn't show up, but we should do something
344 somewhere else to make sure that doesn't happen. until
345 that is guaranteed, print something anyway.
348 case kAudioFormatTimeCode:
349 _info.format_name += "timecode";
352 case kAudioFormatMIDIStream:
353 _info.format_name += "MIDI";
356 case kAudioFormatParameterValueStream:
357 _info.format_name += "parameter values";
361 // XXX it would be nice to find a way to get this information if it exists
367 ExtAudioFileDispose (af);