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 #include "aubio_priv.h"
26 #include "io/source_apple_audio.h"
28 // ExtAudioFileRef, AudioStreamBasicDescription, AudioBufferList, ...
29 #include <AudioToolbox/AudioToolbox.h>
31 #define RT_BYTE1( a ) ( (a) & 0xff )
32 #define RT_BYTE2( a ) ( ((a) >> 8) & 0xff )
33 #define RT_BYTE3( a ) ( ((a) >> 16) & 0xff )
34 #define RT_BYTE4( a ) ( ((a) >> 24) & 0xff )
36 #define SHORT_TO_FLOAT(x) (smpl_t)(x * 3.0517578125e-05)
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 createAubioBufferList(AudioBufferList *bufferList, int channels, int max_source_samples);
51 extern void freeAudioBufferList(AudioBufferList *bufferList);
52 extern CFURLRef getURLFromPath(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, char_t * path);
57 aubio_source_apple_audio_t * new_aubio_source_apple_audio(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 s->block_size = block_size;
62 s->samplerate = samplerate;
64 if ( aubio_source_apple_audio_open ( s, path ) ) {
74 uint_t aubio_source_apple_audio_open (aubio_source_apple_audio_t *s, char_t * path)
80 // open the resource url
81 CFURLRef fileURL = getURLFromPath(path);
82 err = ExtAudioFileOpenURL(fileURL, &s->audioFile);
84 AUBIO_ERR("source_apple_audio: Failed opening %s, "
85 "file not found, or no read access\n", s->path);
89 AUBIO_ERR("source_apple_audio: Failed opening %s, "
90 "error in ExtAudioFileOpenURL (%s)\n", s->path,
91 getPrintableOSStatusError(errorstr, err));
95 // create an empty AudioStreamBasicDescription
96 AudioStreamBasicDescription fileFormat;
97 propSize = sizeof(fileFormat);
98 memset(&fileFormat, 0, sizeof(AudioStreamBasicDescription));
100 // fill it with the file description
101 err = ExtAudioFileGetProperty(s->audioFile,
102 kExtAudioFileProperty_FileDataFormat, &propSize, &fileFormat);
105 AUBIO_ERROR("source_apple_audio: Failed opening %s, "
106 "error in ExtAudioFileGetProperty (%s)\n", s->path,
107 getPrintableOSStatusError(errorstr, err));
111 if (s->samplerate == 0) {
112 s->samplerate = fileFormat.mSampleRate;
113 //AUBIO_DBG("sampling rate set to 0, automagically adjusting to %d\n", samplerate);
116 s->source_samplerate = fileFormat.mSampleRate;
117 s->channels = fileFormat.mChannelsPerFrame;
119 AudioStreamBasicDescription clientFormat;
120 propSize = sizeof(clientFormat);
121 memset(&clientFormat, 0, sizeof(AudioStreamBasicDescription));
122 clientFormat.mFormatID = kAudioFormatLinearPCM;
123 clientFormat.mSampleRate = (Float64)(s->samplerate);
124 clientFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
125 clientFormat.mChannelsPerFrame = s->channels;
126 clientFormat.mBitsPerChannel = sizeof(short) * 8;
127 clientFormat.mFramesPerPacket = 1;
128 clientFormat.mBytesPerFrame = clientFormat.mBitsPerChannel * clientFormat.mChannelsPerFrame / 8;
129 clientFormat.mBytesPerPacket = clientFormat.mFramesPerPacket * clientFormat.mBytesPerFrame;
130 clientFormat.mReserved = 0;
132 // set the client format description
133 err = ExtAudioFileSetProperty(s->audioFile, kExtAudioFileProperty_ClientDataFormat,
134 propSize, &clientFormat);
137 AUBIO_ERROR("source_apple_audio: Failed opening %s, "
138 "error in ExtAudioFileSetProperty (%s)\n", s->path,
139 getPrintableOSStatusError(errorstr, err));
141 // print client and format descriptions
142 AUBIO_DBG("Opened %s\n", s->path);
143 AUBIO_DBG("file/client Format.mFormatID: : %3c%c%c%c / %c%c%c%c\n",
144 (int)RT_BYTE4(fileFormat.mFormatID), (int)RT_BYTE3(fileFormat.mFormatID), (int)RT_BYTE2(fileFormat.mFormatID), (int)RT_BYTE1(fileFormat.mFormatID),
145 (int)RT_BYTE4(clientFormat.mFormatID), (int)RT_BYTE3(clientFormat.mFormatID), (int)RT_BYTE2(clientFormat.mFormatID), (int)RT_BYTE1(clientFormat.mFormatID)
148 AUBIO_DBG("file/client Format.mSampleRate : %6.0f / %.0f\n", fileFormat.mSampleRate , clientFormat.mSampleRate);
149 AUBIO_DBG("file/client Format.mFormatFlags : %6d / %d\n", (int)fileFormat.mFormatFlags , (int)clientFormat.mFormatFlags);
150 AUBIO_DBG("file/client Format.mChannelsPerFrame : %6d / %d\n", (int)fileFormat.mChannelsPerFrame, (int)clientFormat.mChannelsPerFrame);
151 AUBIO_DBG("file/client Format.mBitsPerChannel : %6d / %d\n", (int)fileFormat.mBitsPerChannel , (int)clientFormat.mBitsPerChannel);
152 AUBIO_DBG("file/client Format.mFramesPerPacket : %6d / %d\n", (int)fileFormat.mFramesPerPacket , (int)clientFormat.mFramesPerPacket);
153 AUBIO_DBG("file/client Format.mBytesPerFrame : %6d / %d\n", (int)fileFormat.mBytesPerFrame , (int)clientFormat.mBytesPerFrame);
154 AUBIO_DBG("file/client Format.mBytesPerPacket : %6d / %d\n", (int)fileFormat.mBytesPerPacket , (int)clientFormat.mBytesPerPacket);
155 AUBIO_DBG("file/client Format.mReserved : %6d / %d\n", (int)fileFormat.mReserved , (int)clientFormat.mReserved);
160 smpl_t ratio = s->source_samplerate * 1. / s->samplerate;
162 AUBIO_WRN("source_apple_audio: up-sampling %s from %0dHz to %0dHz\n",
163 s->path, s->source_samplerate, s->samplerate);
166 // allocate the AudioBufferList
167 freeAudioBufferList(&s->bufferList);
168 if (createAubioBufferList(&s->bufferList, s->channels, s->block_size * s->channels)) {
169 AUBIO_ERR("source_apple_audio: failed creating bufferList\n");
177 void aubio_source_apple_audio_do(aubio_source_apple_audio_t *s, fvec_t * read_to, uint_t * read) {
178 UInt32 c, v, loadedPackets = s->block_size;
179 OSStatus err = ExtAudioFileRead(s->audioFile, &loadedPackets, &s->bufferList);
182 AUBIO_ERROR("source_apple_audio: error while reading %s "
183 "with ExtAudioFileRead (%s)\n", s->path,
184 getPrintableOSStatusError(errorstr, err));
188 short *data = (short*)s->bufferList.mBuffers[0].mData;
190 smpl_t *buf = read_to->data;
192 for (v = 0; v < loadedPackets; v++) {
194 for (c = 0; c < s->channels; c++) {
195 buf[v] += SHORT_TO_FLOAT(data[ v * s->channels + c]);
197 buf[v] /= (smpl_t)s->channels;
199 // short read, fill with zeros
200 if (loadedPackets < s->block_size) {
201 for (v = loadedPackets; v < s->block_size; v++) {
206 *read = (uint_t)loadedPackets;
213 void aubio_source_apple_audio_do_multi(aubio_source_apple_audio_t *s, fmat_t * read_to, uint_t * read) {
214 UInt32 c, v, loadedPackets = s->block_size;
215 OSStatus err = ExtAudioFileRead(s->audioFile, &loadedPackets, &s->bufferList);
218 AUBIO_ERROR("source_apple_audio: error while reading %s "
219 "with ExtAudioFileRead (%s)\n", s->path,
220 getPrintableOSStatusError(errorstr, err));
224 short *data = (short*)s->bufferList.mBuffers[0].mData;
226 smpl_t **buf = read_to->data;
228 for (v = 0; v < loadedPackets; v++) {
229 for (c = 0; c < read_to->height; c++) {
230 buf[c][v] = SHORT_TO_FLOAT(data[ v * s->channels + c]);
233 // if read_data has more channels than the file
234 if (read_to->height > s->channels) {
235 // copy last channel to all additional channels
236 for (v = 0; v < loadedPackets; v++) {
237 for (c = s->channels; c < read_to->height; c++) {
238 buf[c][v] = SHORT_TO_FLOAT(data[ v * s->channels + (s->channels - 1)]);
242 // short read, fill with zeros
243 if (loadedPackets < s->block_size) {
244 for (v = loadedPackets; v < s->block_size; v++) {
245 for (c = 0; c < read_to->height; c++) {
250 *read = (uint_t)loadedPackets;
257 uint_t aubio_source_apple_audio_close (aubio_source_apple_audio_t *s)
259 OSStatus err = noErr;
260 if (!s->audioFile) { return AUBIO_FAIL; }
261 err = ExtAudioFileDispose(s->audioFile);
265 AUBIO_ERROR("source_apple_audio: error while closing %s "
266 "in ExtAudioFileDispose (%s)\n", s->path,
267 getPrintableOSStatusError(errorstr, err));
273 void del_aubio_source_apple_audio(aubio_source_apple_audio_t * s){
274 aubio_source_apple_audio_close (s);
275 freeAudioBufferList(&s->bufferList);
280 uint_t aubio_source_apple_audio_seek (aubio_source_apple_audio_t * s, uint_t pos) {
281 // after a short read, the bufferList size needs to resetted to prepare for a full read
282 AudioBufferList *bufferList = &s->bufferList;
283 bufferList->mBuffers[0].mDataByteSize = s->block_size * s->channels * sizeof (short);
284 // compute position in the source file, before resampling
285 smpl_t ratio = s->source_samplerate * 1. / s->samplerate;
286 SInt64 resampled_pos = (SInt64)ROUND( pos * ratio );
287 OSStatus err = ExtAudioFileSeek(s->audioFile, resampled_pos);
290 AUBIO_ERROR("source_apple_audio: error while seeking %s at %d "
291 "in ExtAudioFileSeek (%s)\n", s->path, pos,
292 getPrintableOSStatusError(errorstr, err));
297 uint_t aubio_source_apple_audio_get_samplerate(aubio_source_apple_audio_t * s) {
298 return s->samplerate;
301 uint_t aubio_source_apple_audio_get_channels(aubio_source_apple_audio_t * s) {
305 #endif /* __APPLE__ */