2 Copyright (C) 2012 Paul Brossier <piem@aubio.org>
4 This file is part of aubio.
6 aubio is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 aubio is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with aubio. If not, see <http://www.gnu.org/licenses/>.
23 #ifdef HAVE_SOURCE_APPLE_AUDIO
25 #include "aubio_priv.h"
28 #include "io/source_apple_audio.h"
30 // ExtAudioFileRef, AudioStreamBasicDescription, AudioBufferList, ...
31 #include <AudioToolbox/AudioToolbox.h>
33 #define RT_BYTE1( a ) ( (a) & 0xff )
34 #define RT_BYTE2( a ) ( ((a) >> 8) & 0xff )
35 #define RT_BYTE3( a ) ( ((a) >> 16) & 0xff )
36 #define RT_BYTE4( a ) ( ((a) >> 24) & 0xff )
38 #define SHORT_TO_FLOAT(x) (smpl_t)(x * 3.0517578125e-05)
40 struct _aubio_source_apple_audio_t {
42 uint_t samplerate; //< requested samplerate
43 uint_t source_samplerate; //< actual source samplerate
48 ExtAudioFileRef audioFile;
49 AudioBufferList bufferList;
52 extern int createAubioBufferList(AudioBufferList *bufferList, int channels, int max_source_samples);
53 extern void freeAudioBufferList(AudioBufferList *bufferList);
54 extern CFURLRef createURLFromPath(const char * path);
55 char_t *getPrintableOSStatusError(char_t *str, OSStatus error);
57 uint_t aubio_source_apple_audio_open (aubio_source_apple_audio_t *s, char_t * path);
59 aubio_source_apple_audio_t * new_aubio_source_apple_audio(char_t * path, uint_t samplerate, uint_t block_size)
61 aubio_source_apple_audio_t * s = AUBIO_NEW(aubio_source_apple_audio_t);
64 AUBIO_ERROR("source_apple_audio: Aborted opening null path\n");
68 if ( (sint_t)block_size <= 0 ) {
69 AUBIO_ERROR("source_apple_audio: Can not open %s with null or negative block_size %d\n",
74 if ( (sint_t)samplerate < 0 ) {
75 AUBIO_ERROR("source_apple_audio: Can not open %s with negative samplerate %d\n",
80 s->block_size = block_size;
81 s->samplerate = samplerate;
84 if ( aubio_source_apple_audio_open ( s, path ) ) {
94 uint_t aubio_source_apple_audio_open (aubio_source_apple_audio_t *s, char_t * path)
100 // open the resource url
101 CFURLRef fileURL = createURLFromPath(path);
102 err = ExtAudioFileOpenURL(fileURL, &s->audioFile);
105 AUBIO_ERR("source_apple_audio: Failed opening %s, "
106 "file not found, or no read access\n", s->path);
110 AUBIO_ERR("source_apple_audio: Failed opening %s, "
111 "error in ExtAudioFileOpenURL (%s)\n", s->path,
112 getPrintableOSStatusError(errorstr, err));
116 // create an empty AudioStreamBasicDescription
117 AudioStreamBasicDescription fileFormat;
118 propSize = sizeof(fileFormat);
119 memset(&fileFormat, 0, sizeof(AudioStreamBasicDescription));
121 // fill it with the file description
122 err = ExtAudioFileGetProperty(s->audioFile,
123 kExtAudioFileProperty_FileDataFormat, &propSize, &fileFormat);
126 AUBIO_ERROR("source_apple_audio: Failed opening %s, "
127 "error in ExtAudioFileGetProperty (%s)\n", s->path,
128 getPrintableOSStatusError(errorstr, err));
132 if (s->samplerate == 0) {
133 s->samplerate = fileFormat.mSampleRate;
134 //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
137 s->source_samplerate = fileFormat.mSampleRate;
138 s->channels = fileFormat.mChannelsPerFrame;
140 AudioStreamBasicDescription clientFormat;
141 propSize = sizeof(clientFormat);
142 memset(&clientFormat, 0, sizeof(AudioStreamBasicDescription));
143 clientFormat.mFormatID = kAudioFormatLinearPCM;
144 clientFormat.mSampleRate = (Float64)(s->samplerate);
145 clientFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
146 clientFormat.mChannelsPerFrame = s->channels;
147 clientFormat.mBitsPerChannel = sizeof(short) * 8;
148 clientFormat.mFramesPerPacket = 1;
149 clientFormat.mBytesPerFrame = clientFormat.mBitsPerChannel * clientFormat.mChannelsPerFrame / 8;
150 clientFormat.mBytesPerPacket = clientFormat.mFramesPerPacket * clientFormat.mBytesPerFrame;
151 clientFormat.mReserved = 0;
153 // set the client format description
154 err = ExtAudioFileSetProperty(s->audioFile, kExtAudioFileProperty_ClientDataFormat,
155 propSize, &clientFormat);
158 AUBIO_ERROR("source_apple_audio: Failed opening %s, "
159 "error in ExtAudioFileSetProperty (%s)\n", s->path,
160 getPrintableOSStatusError(errorstr, err));
162 // print client and format descriptions
163 AUBIO_DBG("Opened %s\n", s->path);
164 AUBIO_DBG("file/client Format.mFormatID: : %3c%c%c%c / %c%c%c%c\n",
165 (int)RT_BYTE4(fileFormat.mFormatID), (int)RT_BYTE3(fileFormat.mFormatID), (int)RT_BYTE2(fileFormat.mFormatID), (int)RT_BYTE1(fileFormat.mFormatID),
166 (int)RT_BYTE4(clientFormat.mFormatID), (int)RT_BYTE3(clientFormat.mFormatID), (int)RT_BYTE2(clientFormat.mFormatID), (int)RT_BYTE1(clientFormat.mFormatID)
169 AUBIO_DBG("file/client Format.mSampleRate : %6.0f / %.0f\n", fileFormat.mSampleRate , clientFormat.mSampleRate);
170 AUBIO_DBG("file/client Format.mFormatFlags : %6d / %d\n", (int)fileFormat.mFormatFlags , (int)clientFormat.mFormatFlags);
171 AUBIO_DBG("file/client Format.mChannelsPerFrame : %6d / %d\n", (int)fileFormat.mChannelsPerFrame, (int)clientFormat.mChannelsPerFrame);
172 AUBIO_DBG("file/client Format.mBitsPerChannel : %6d / %d\n", (int)fileFormat.mBitsPerChannel , (int)clientFormat.mBitsPerChannel);
173 AUBIO_DBG("file/client Format.mFramesPerPacket : %6d / %d\n", (int)fileFormat.mFramesPerPacket , (int)clientFormat.mFramesPerPacket);
174 AUBIO_DBG("file/client Format.mBytesPerFrame : %6d / %d\n", (int)fileFormat.mBytesPerFrame , (int)clientFormat.mBytesPerFrame);
175 AUBIO_DBG("file/client Format.mBytesPerPacket : %6d / %d\n", (int)fileFormat.mBytesPerPacket , (int)clientFormat.mBytesPerPacket);
176 AUBIO_DBG("file/client Format.mReserved : %6d / %d\n", (int)fileFormat.mReserved , (int)clientFormat.mReserved);
181 smpl_t ratio = s->source_samplerate * 1. / s->samplerate;
183 AUBIO_WRN("source_apple_audio: up-sampling %s from %0dHz to %0dHz\n",
184 s->path, s->source_samplerate, s->samplerate);
187 // allocate the AudioBufferList
188 freeAudioBufferList(&s->bufferList);
189 if (createAubioBufferList(&s->bufferList, s->channels, s->block_size * s->channels)) {
190 AUBIO_ERR("source_apple_audio: failed creating bufferList\n");
198 void aubio_source_apple_audio_do(aubio_source_apple_audio_t *s, fvec_t * read_to, uint_t * read) {
199 UInt32 c, v, loadedPackets = s->block_size;
200 OSStatus err = ExtAudioFileRead(s->audioFile, &loadedPackets, &s->bufferList);
203 AUBIO_ERROR("source_apple_audio: error while reading %s "
204 "with ExtAudioFileRead (%s)\n", s->path,
205 getPrintableOSStatusError(errorstr, err));
209 short *data = (short*)s->bufferList.mBuffers[0].mData;
211 smpl_t *buf = read_to->data;
213 for (v = 0; v < loadedPackets; v++) {
215 for (c = 0; c < s->channels; c++) {
216 buf[v] += SHORT_TO_FLOAT(data[ v * s->channels + c]);
218 buf[v] /= (smpl_t)s->channels;
220 // short read, fill with zeros
221 if (loadedPackets < s->block_size) {
222 for (v = loadedPackets; v < s->block_size; v++) {
227 *read = (uint_t)loadedPackets;
234 void aubio_source_apple_audio_do_multi(aubio_source_apple_audio_t *s, fmat_t * read_to, uint_t * read) {
235 UInt32 c, v, loadedPackets = s->block_size;
236 OSStatus err = ExtAudioFileRead(s->audioFile, &loadedPackets, &s->bufferList);
239 AUBIO_ERROR("source_apple_audio: error while reading %s "
240 "with ExtAudioFileRead (%s)\n", s->path,
241 getPrintableOSStatusError(errorstr, err));
245 short *data = (short*)s->bufferList.mBuffers[0].mData;
247 smpl_t **buf = read_to->data;
249 for (v = 0; v < loadedPackets; v++) {
250 for (c = 0; c < read_to->height; c++) {
251 buf[c][v] = SHORT_TO_FLOAT(data[ v * s->channels + c]);
254 // if read_data has more channels than the file
255 if (read_to->height > s->channels) {
256 // copy last channel to all additional channels
257 for (v = 0; v < loadedPackets; v++) {
258 for (c = s->channels; c < read_to->height; c++) {
259 buf[c][v] = SHORT_TO_FLOAT(data[ v * s->channels + (s->channels - 1)]);
263 // short read, fill with zeros
264 if (loadedPackets < s->block_size) {
265 for (v = loadedPackets; v < s->block_size; v++) {
266 for (c = 0; c < read_to->height; c++) {
271 *read = (uint_t)loadedPackets;
278 uint_t aubio_source_apple_audio_close (aubio_source_apple_audio_t *s)
280 OSStatus err = noErr;
281 if (!s->audioFile) { return AUBIO_FAIL; }
282 err = ExtAudioFileDispose(s->audioFile);
286 AUBIO_ERROR("source_apple_audio: error while closing %s "
287 "in ExtAudioFileDispose (%s)\n", s->path,
288 getPrintableOSStatusError(errorstr, err));
294 void del_aubio_source_apple_audio(aubio_source_apple_audio_t * s){
295 aubio_source_apple_audio_close (s);
296 freeAudioBufferList(&s->bufferList);
301 uint_t aubio_source_apple_audio_seek (aubio_source_apple_audio_t * s, uint_t pos) {
302 OSStatus err = noErr;
303 if ((sint_t)pos < 0) {
304 AUBIO_ERROR("source_apple_audio: error while seeking in %s "
305 "(can not seek at negative position %d)\n",
310 // check if we are not seeking out of the file
311 SInt64 fileLengthFrames = 0;
312 UInt32 propSize = sizeof(fileLengthFrames);
313 ExtAudioFileGetProperty(s->audioFile,
314 kExtAudioFileProperty_FileLengthFrames, &propSize, &fileLengthFrames);
315 // compute position in the source file, before resampling
316 smpl_t ratio = s->source_samplerate * 1. / s->samplerate;
317 SInt64 resampled_pos = (SInt64)ROUND( pos * ratio );
318 if (resampled_pos > fileLengthFrames) {
319 AUBIO_ERR("source_apple_audio: trying to seek in %s at pos %d, "
320 "but file has only %d frames\n",
321 s->path, pos, (uint_t)(fileLengthFrames / ratio));
325 // after a short read, the bufferList size needs to resetted to prepare for a full read
326 AudioBufferList *bufferList = &s->bufferList;
327 bufferList->mBuffers[0].mDataByteSize = s->block_size * s->channels * sizeof (short);
328 // do the actual seek
329 err = ExtAudioFileSeek(s->audioFile, resampled_pos);
332 AUBIO_ERROR("source_apple_audio: error while seeking %s at %d "
333 "in ExtAudioFileSeek (%s)\n", s->path, pos,
334 getPrintableOSStatusError(errorstr, err));
337 // check position after seek
339 SInt64 outFrameOffset = 0;
340 err = ExtAudioFileTell(s->audioFile, &outFrameOffset);
343 AUBIO_ERROR("source_apple_audio: error while seeking %s at %d "
344 "in ExtAudioFileTell (%s)\n", s->path, pos,
345 getPrintableOSStatusError(errorstr, err));
347 AUBIO_DBG("source_apple_audio: asked seek at %d, tell got %d\n",
348 pos, (uint_t)(outFrameOffset / ratio + .5));
355 uint_t aubio_source_apple_audio_get_samplerate(aubio_source_apple_audio_t * s) {
356 return s->samplerate;
359 uint_t aubio_source_apple_audio_get_channels(aubio_source_apple_audio_t * s) {
363 #endif /* HAVE_SOURCE_APPLE_AUDIO */