source: src/io/source_apple_audio.c @ 1223979

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchpitchshiftsamplertimestretchyinfft+
Last change on this file since 1223979 was 1223979, checked in by Paul Brossier <piem@piem.org>, 8 years ago

src/io/sink_apple_audio.c: added apple_audio sink, merge apple stuff

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File size: 7.1 KB
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1/*
2  Copyright (C) 2012 Paul Brossier <piem@aubio.org>
3
4  This file is part of aubio.
5
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.
10
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.
15
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/>.
18
19*/
20
21#ifdef __APPLE__
22#include "config.h"
23#include "aubio_priv.h"
24#include "fvec.h"
25#include "io/source_apple_audio.h"
26
27// ExtAudioFileRef, AudioStreamBasicDescription, AudioBufferList, ...
28#include <AudioToolbox/AudioToolbox.h>
29
30#define RT_BYTE1( a )      ( (a) & 0xff )
31#define RT_BYTE2( a )      ( ((a) >> 8) & 0xff )
32#define RT_BYTE3( a )      ( ((a) >> 16) & 0xff )
33#define RT_BYTE4( a )      ( ((a) >> 24) & 0xff )
34
35#define SHORT_TO_FLOAT(x) (smpl_t)(x * 3.0517578125e-05)
36
37struct _aubio_source_apple_audio_t {
38  uint_t channels;
39  uint_t samplerate;
40  uint_t block_size;
41
42  char_t *path;
43
44  ExtAudioFileRef audioFile;
45  AudioBufferList bufferList;
46};
47
48extern int createAubioBufferList(AudioBufferList *bufferList, int channels, int segmentSize);
49extern void freeAudioBufferList(AudioBufferList *bufferList);
50extern CFURLRef getURLFromPath(const char * path);
51
52aubio_source_apple_audio_t * new_aubio_source_apple_audio(char_t * path, uint_t samplerate, uint_t block_size)
53{
54  aubio_source_apple_audio_t * s = AUBIO_NEW(aubio_source_apple_audio_t);
55
56  s->path = path;
57  s->samplerate = samplerate;
58  s->block_size = block_size;
59  s->channels = 1;
60
61  OSStatus err = noErr;
62  UInt32 propSize;
63
64  AudioStreamBasicDescription clientFormat;
65  propSize = sizeof(clientFormat);
66  memset(&clientFormat, 0, sizeof(AudioStreamBasicDescription));
67  clientFormat.mFormatID         = kAudioFormatLinearPCM;
68  clientFormat.mSampleRate       = (Float64)(s->samplerate);
69  clientFormat.mFormatFlags      = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
70  clientFormat.mChannelsPerFrame = s->channels;
71  clientFormat.mBitsPerChannel   = sizeof(short) * 8;
72  clientFormat.mFramesPerPacket  = 1;
73  clientFormat.mBytesPerFrame    = clientFormat.mBitsPerChannel * clientFormat.mChannelsPerFrame / 8;
74  clientFormat.mBytesPerPacket   = clientFormat.mFramesPerPacket * clientFormat.mBytesPerFrame;
75  clientFormat.mReserved         = 0;
76
77  // open the resource url
78  CFURLRef fileURL = getURLFromPath(path);
79  err = ExtAudioFileOpenURL(fileURL, &s->audioFile);
80  if (err) { AUBIO_ERR("error when trying to access %s, in ExtAudioFileOpenURL, %d\n", s->path, (int)err); goto beach;}
81
82  // create an empty AudioStreamBasicDescription
83  AudioStreamBasicDescription fileFormat;
84  propSize = sizeof(fileFormat);
85  memset(&fileFormat, 0, sizeof(AudioStreamBasicDescription));
86
87  // fill it with the file description
88  err = ExtAudioFileGetProperty(s->audioFile,
89      kExtAudioFileProperty_FileDataFormat, &propSize, &fileFormat);
90  if (err) { AUBIO_ERROR("error in ExtAudioFileGetProperty, %d\n", (int)err); goto beach;}
91
92  // set the client format description
93  err = ExtAudioFileSetProperty(s->audioFile, kExtAudioFileProperty_ClientDataFormat,
94      propSize, &clientFormat);
95  if (err) { AUBIO_ERROR("error in ExtAudioFileSetProperty, %d\n", (int)err); goto beach;}
96
97#if 0
98  // print client and format descriptions
99  AUBIO_DBG("Opened %s\n", s->path);
100  AUBIO_DBG("file/client Format.mFormatID:        : %3c%c%c%c / %c%c%c%c\n",
101      (int)RT_BYTE4(fileFormat.mFormatID),   (int)RT_BYTE3(fileFormat.mFormatID),   (int)RT_BYTE2(fileFormat.mFormatID),   (int)RT_BYTE1(fileFormat.mFormatID),
102      (int)RT_BYTE4(clientFormat.mFormatID), (int)RT_BYTE3(clientFormat.mFormatID), (int)RT_BYTE2(clientFormat.mFormatID), (int)RT_BYTE1(clientFormat.mFormatID)
103      );
104
105  AUBIO_DBG("file/client Format.mSampleRate       : %6.0f / %.0f\n",     fileFormat.mSampleRate      ,      clientFormat.mSampleRate);
106  AUBIO_DBG("file/client Format.mFormatFlags      : %6d / %d\n",    (int)fileFormat.mFormatFlags     , (int)clientFormat.mFormatFlags);
107  AUBIO_DBG("file/client Format.mChannelsPerFrame : %6d / %d\n",    (int)fileFormat.mChannelsPerFrame, (int)clientFormat.mChannelsPerFrame);
108  AUBIO_DBG("file/client Format.mBitsPerChannel   : %6d / %d\n",    (int)fileFormat.mBitsPerChannel  , (int)clientFormat.mBitsPerChannel);
109  AUBIO_DBG("file/client Format.mFramesPerPacket  : %6d / %d\n",    (int)fileFormat.mFramesPerPacket , (int)clientFormat.mFramesPerPacket);
110  AUBIO_DBG("file/client Format.mBytesPerFrame    : %6d / %d\n",    (int)fileFormat.mBytesPerFrame   , (int)clientFormat.mBytesPerFrame);
111  AUBIO_DBG("file/client Format.mBytesPerPacket   : %6d / %d\n",    (int)fileFormat.mBytesPerPacket  , (int)clientFormat.mBytesPerPacket);
112  AUBIO_DBG("file/client Format.mReserved         : %6d / %d\n",    (int)fileFormat.mReserved        , (int)clientFormat.mReserved);
113#endif
114
115  // compute the size of the segments needed to read the input file
116  UInt32 samples = s->block_size * clientFormat.mChannelsPerFrame;
117  Float64 rateRatio = clientFormat.mSampleRate / fileFormat.mSampleRate;
118  uint_t segmentSize= (uint_t)(samples * rateRatio + .5);
119  if (rateRatio < 1.) {
120    segmentSize = (uint_t)(samples / rateRatio + .5);
121  } else if (rateRatio > 1.) {
122    AUBIO_WRN("up-sampling %s from %0.2fHz to %0.2fHz\n", s->path, fileFormat.mSampleRate, clientFormat.mSampleRate);
123  } else {
124    assert (segmentSize == samples );
125    //AUBIO_DBG("not resampling, segmentSize %d, block_size %d\n", segmentSize, s->block_size);
126  }
127
128  // allocate the AudioBufferList
129  if (createAubioBufferList(&s->bufferList, s->channels, segmentSize)) err = -1;
130
131  return s;
132 
133beach:
134  AUBIO_FREE(s);
135  return NULL;
136}
137
138void aubio_source_apple_audio_do(aubio_source_apple_audio_t *s, fvec_t * read_to, uint_t * read) {
139  UInt32 c, v, loadedPackets = s->block_size;
140  OSStatus err = ExtAudioFileRead(s->audioFile, &loadedPackets, &s->bufferList);
141  if (err) { AUBIO_ERROR("error in ExtAudioFileRead, %d\n", (int)err); goto beach;}
142
143  smpl_t *buf = read_to->data;
144
145  short *data = (short*)s->bufferList.mBuffers[0].mData;
146
147  if (buf) {
148      for (c = 0; c < s->channels; c++) {
149          for (v = 0; v < s->block_size; v++) {
150              if (v < loadedPackets) {
151                  buf[v * s->channels + c] =
152                      SHORT_TO_FLOAT(data[ v * s->channels + c]);
153              } else {
154                  buf[v * s->channels + c] = 0.f;
155              }
156          }
157      }
158  }
159  //if (loadedPackets < s->block_size) return EOF;
160  *read = (uint_t)loadedPackets;
161  return;
162beach:
163  *read = 0;
164  return;
165}
166
167void del_aubio_source_apple_audio(aubio_source_apple_audio_t * s){
168  OSStatus err = noErr;
169  if (!s || !s->audioFile) { return; }
170  err = ExtAudioFileDispose(s->audioFile);
171  if (err) AUBIO_ERROR("error in ExtAudioFileDispose, %d\n", (int)err);
172  s->audioFile = NULL;
173  freeAudioBufferList(&s->bufferList);
174  AUBIO_FREE(s);
175  return;
176}
177
178#endif /* __APPLE__ */
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