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/>.
21 #include "aubio_priv.h"
23 #ifdef HAVE_SOURCE_APPLE_AUDIO
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 struct _aubio_source_apple_audio_t {
40 uint_t samplerate; //< requested samplerate
41 uint_t source_samplerate; //< actual source samplerate
46 ExtAudioFileRef audioFile;
47 AudioBufferList bufferList;
50 extern int createAudioBufferList(AudioBufferList *bufferList, int channels, int max_source_samples);
51 extern void freeAudioBufferList(AudioBufferList *bufferList);
52 extern CFURLRef createURLFromPath(const char * path);
53 char_t *getPrintableOSStatusError(char_t *str, OSStatus error);
55 uint_t aubio_source_apple_audio_open (aubio_source_apple_audio_t *s, const char_t * path);
57 aubio_source_apple_audio_t * new_aubio_source_apple_audio(const char_t * path, uint_t samplerate, uint_t block_size)
59 aubio_source_apple_audio_t * s = AUBIO_NEW(aubio_source_apple_audio_t);
61 if (path == NULL || strnlen(path, PATH_MAX) < 1) {
62 AUBIO_ERROR("source_apple_audio: Aborted opening null path\n");
66 if ( (sint_t)block_size <= 0 ) {
67 AUBIO_ERROR("source_apple_audio: Can not open %s with null or negative block_size %d\n",
72 if ( (sint_t)samplerate < 0 ) {
73 AUBIO_ERROR("source_apple_audio: Can not open %s with negative samplerate %d\n",
78 s->block_size = block_size;
79 s->samplerate = samplerate;
81 if ( aubio_source_apple_audio_open ( s, path ) ) {
87 del_aubio_source_apple_audio(s);
91 uint_t aubio_source_apple_audio_open (aubio_source_apple_audio_t *s, const char_t * path)
96 s->path = AUBIO_ARRAY(char_t, strnlen(path, PATH_MAX) + 1);
97 strncpy(s->path, path, strnlen(path, PATH_MAX) + 1);
99 // open the resource url
100 CFURLRef fileURL = createURLFromPath(s->path);
101 err = ExtAudioFileOpenURL(fileURL, &s->audioFile);
104 AUBIO_ERR("source_apple_audio: Failed opening %s, "
105 "file not found, or no read access\n", s->path);
109 AUBIO_ERR("source_apple_audio: Failed opening %s, "
110 "error in ExtAudioFileOpenURL (%s)\n", s->path,
111 getPrintableOSStatusError(errorstr, err));
115 // create an empty AudioStreamBasicDescription
116 AudioStreamBasicDescription fileFormat;
117 propSize = sizeof(fileFormat);
118 memset(&fileFormat, 0, sizeof(AudioStreamBasicDescription));
120 // fill it with the file description
121 err = ExtAudioFileGetProperty(s->audioFile,
122 kExtAudioFileProperty_FileDataFormat, &propSize, &fileFormat);
125 AUBIO_ERROR("source_apple_audio: Failed opening %s, "
126 "error in ExtAudioFileGetProperty (%s)\n", s->path,
127 getPrintableOSStatusError(errorstr, err));
131 if (s->samplerate == 0) {
132 s->samplerate = fileFormat.mSampleRate;
133 //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
136 s->source_samplerate = fileFormat.mSampleRate;
137 s->channels = fileFormat.mChannelsPerFrame;
139 AudioStreamBasicDescription clientFormat;
140 propSize = sizeof(AudioStreamBasicDescription);
141 memset(&clientFormat, 0, sizeof(AudioStreamBasicDescription));
142 clientFormat.mFormatID = kAudioFormatLinearPCM;
143 clientFormat.mSampleRate = (Float64)(s->samplerate);
144 clientFormat.mFormatFlags = kAudioFormatFlagIsFloat;
145 clientFormat.mChannelsPerFrame = s->channels;
146 clientFormat.mBitsPerChannel = sizeof(smpl_t) * 8;
147 clientFormat.mFramesPerPacket = 1;
148 clientFormat.mBytesPerFrame = clientFormat.mBitsPerChannel * clientFormat.mChannelsPerFrame / 8;
149 clientFormat.mBytesPerPacket = clientFormat.mFramesPerPacket * clientFormat.mBytesPerFrame;
151 // set the client format description
152 err = ExtAudioFileSetProperty(s->audioFile, kExtAudioFileProperty_ClientDataFormat,
153 propSize, &clientFormat);
156 AUBIO_ERROR("source_apple_audio: Failed opening %s, "
157 "error in ExtAudioFileSetProperty (%s)\n", s->path,
158 getPrintableOSStatusError(errorstr, err));
160 // print client and format descriptions
161 AUBIO_DBG("Opened %s\n", s->path);
162 AUBIO_DBG("file/client Format.mFormatID: : %3c%c%c%c / %c%c%c%c\n",
163 (int)RT_BYTE4(fileFormat.mFormatID), (int)RT_BYTE3(fileFormat.mFormatID), (int)RT_BYTE2(fileFormat.mFormatID), (int)RT_BYTE1(fileFormat.mFormatID),
164 (int)RT_BYTE4(clientFormat.mFormatID), (int)RT_BYTE3(clientFormat.mFormatID), (int)RT_BYTE2(clientFormat.mFormatID), (int)RT_BYTE1(clientFormat.mFormatID)
167 AUBIO_DBG("file/client Format.mSampleRate : %6.0f / %.0f\n", fileFormat.mSampleRate , clientFormat.mSampleRate);
168 AUBIO_DBG("file/client Format.mFormatFlags : %6d / %d\n", (int)fileFormat.mFormatFlags , (int)clientFormat.mFormatFlags);
169 AUBIO_DBG("file/client Format.mChannelsPerFrame : %6d / %d\n", (int)fileFormat.mChannelsPerFrame, (int)clientFormat.mChannelsPerFrame);
170 AUBIO_DBG("file/client Format.mBitsPerChannel : %6d / %d\n", (int)fileFormat.mBitsPerChannel , (int)clientFormat.mBitsPerChannel);
171 AUBIO_DBG("file/client Format.mFramesPerPacket : %6d / %d\n", (int)fileFormat.mFramesPerPacket , (int)clientFormat.mFramesPerPacket);
172 AUBIO_DBG("file/client Format.mBytesPerFrame : %6d / %d\n", (int)fileFormat.mBytesPerFrame , (int)clientFormat.mBytesPerFrame);
173 AUBIO_DBG("file/client Format.mBytesPerPacket : %6d / %d\n", (int)fileFormat.mBytesPerPacket , (int)clientFormat.mBytesPerPacket);
174 AUBIO_DBG("file/client Format.mReserved : %6d / %d\n", (int)fileFormat.mReserved , (int)clientFormat.mReserved);
179 smpl_t ratio = s->source_samplerate * 1. / s->samplerate;
181 AUBIO_WRN("source_apple_audio: up-sampling %s from %0dHz to %0dHz\n",
182 s->path, s->source_samplerate, s->samplerate);
185 // allocate the AudioBufferList
186 freeAudioBufferList(&s->bufferList);
187 if (createAudioBufferList(&s->bufferList, s->channels, s->block_size * s->channels)) {
188 AUBIO_ERR("source_apple_audio: failed creating bufferList\n");
196 static UInt32 aubio_source_apple_audio_read_frame(aubio_source_apple_audio_t *s)
198 UInt32 loadedPackets = s->block_size;
199 OSStatus err = ExtAudioFileRead(s->audioFile, &loadedPackets, &s->bufferList);
202 AUBIO_ERROR("source_apple_audio: error while reading %s "
203 "with ExtAudioFileRead (%s)\n", s->path,
204 getPrintableOSStatusError(errorstr, err));
206 return loadedPackets;
209 void aubio_source_apple_audio_do(aubio_source_apple_audio_t *s, fvec_t * read_to,
212 UInt32 loadedPackets = aubio_source_apple_audio_read_frame(s);
213 uint_t length = aubio_source_validate_input_length("source_apple_audio",
214 s->path, s->block_size, read_to->length);
215 smpl_t *data = (smpl_t*)s->bufferList.mBuffers[0].mData;
217 length = MIN(loadedPackets, length);
219 for (v = 0; v < length; v++) {
220 read_to->data[v] = 0.;
221 for (c = 0; c < s->channels; c++) {
222 read_to->data[v] += data[ v * s->channels + c];
224 read_to->data[v] /= (smpl_t)s->channels;
226 // short read, fill with zeros
227 aubio_source_pad_output(read_to, length);
229 *read = (uint_t)length;
232 void aubio_source_apple_audio_do_multi(aubio_source_apple_audio_t *s, fmat_t * read_to, uint_t * read) {
234 uint_t length = aubio_source_validate_input_length("source_apple_audio",
235 s->path, s->block_size, read_to->length);
236 uint_t channels = aubio_source_validate_input_channels("source_apple_audio",
237 s->path, s->channels, read_to->height);
238 UInt32 loadedPackets = aubio_source_apple_audio_read_frame(s);
239 smpl_t *data = (smpl_t*)s->bufferList.mBuffers[0].mData;
241 length = MIN(loadedPackets, length);
243 for (v = 0; v < length; v++) {
244 for (c = 0; c < channels; c++) {
245 read_to->data[c][v] = data[ v * s->channels + c];
249 aubio_source_pad_multi_output(read_to, s->channels, (uint_t)length);
251 *read = (uint_t)length;
254 uint_t aubio_source_apple_audio_close (aubio_source_apple_audio_t *s)
256 OSStatus err = noErr;
257 if (!s->audioFile) { return AUBIO_OK; }
258 err = ExtAudioFileDispose(s->audioFile);
262 AUBIO_ERROR("source_apple_audio: error while closing %s "
263 "in ExtAudioFileDispose (%s)\n", s->path,
264 getPrintableOSStatusError(errorstr, err));
270 void del_aubio_source_apple_audio(aubio_source_apple_audio_t * s){
272 aubio_source_apple_audio_close (s);
273 if (s->path) AUBIO_FREE(s->path);
274 freeAudioBufferList(&s->bufferList);
278 uint_t aubio_source_apple_audio_seek (aubio_source_apple_audio_t * s, uint_t pos) {
279 OSStatus err = noErr;
280 if ((sint_t)pos < 0) {
281 AUBIO_ERROR("source_apple_audio: error while seeking in %s "
282 "(can not seek at negative position %d)\n",
287 // check if we are not seeking out of the file
288 uint_t fileLengthFrames = aubio_source_apple_audio_get_duration(s);
289 // compute position in the source file, before resampling
290 smpl_t ratio = s->source_samplerate * 1. / s->samplerate;
291 SInt64 resampled_pos = (SInt64)ROUND( pos * ratio );
292 if (resampled_pos > fileLengthFrames) {
293 AUBIO_ERR("source_apple_audio: trying to seek in %s at pos %d, "
294 "but file has only %d frames\n",
295 s->path, pos, (uint_t)(fileLengthFrames / ratio));
299 // after a short read, the bufferList size needs to resetted to prepare for a full read
300 AudioBufferList *bufferList = &s->bufferList;
301 bufferList->mBuffers[0].mDataByteSize = s->block_size * s->channels * sizeof (smpl_t);
302 // do the actual seek
303 err = ExtAudioFileSeek(s->audioFile, resampled_pos);
306 AUBIO_ERROR("source_apple_audio: error while seeking %s at %d "
307 "in ExtAudioFileSeek (%s)\n", s->path, pos,
308 getPrintableOSStatusError(errorstr, err));
311 // check position after seek
313 SInt64 outFrameOffset = 0;
314 err = ExtAudioFileTell(s->audioFile, &outFrameOffset);
317 AUBIO_ERROR("source_apple_audio: error while seeking %s at %d "
318 "in ExtAudioFileTell (%s)\n", s->path, pos,
319 getPrintableOSStatusError(errorstr, err));
321 AUBIO_DBG("source_apple_audio: asked seek at %d, tell got %d\n",
322 pos, (uint_t)(outFrameOffset / ratio + .5));
329 uint_t aubio_source_apple_audio_get_samplerate(const aubio_source_apple_audio_t * s) {
330 return s->samplerate;
333 uint_t aubio_source_apple_audio_get_channels(const aubio_source_apple_audio_t * s) {
337 uint_t aubio_source_apple_audio_get_duration(const aubio_source_apple_audio_t * s) {
338 SInt64 fileLengthFrames = 0;
339 UInt32 propSize = sizeof(fileLengthFrames);
340 OSStatus err = ExtAudioFileGetProperty(s->audioFile,
341 kExtAudioFileProperty_FileLengthFrames, &propSize, &fileLengthFrames);
344 AUBIO_ERROR("source_apple_audio: Failed getting %s duration, "
345 "error in ExtAudioFileGetProperty (%s)\n", s->path,
346 getPrintableOSStatusError(errorstr, err));
349 return (uint_t)fileLengthFrames;
352 #endif /* HAVE_SOURCE_APPLE_AUDIO */