src/io/utils_apple_audio.c

   1 #ifdef __APPLE__
   2
   3 // CFURLRef, CFURLCreateWithFileSystemPath, ...
   4 #include <CoreFoundation/CoreFoundation.h>
   5 // ExtAudioFileRef, AudioStreamBasicDescription, AudioBufferList, ...
   6 #include <AudioToolbox/AudioToolbox.h>
   7 #include "aubio_priv.h"
   8
   9 int createAubioBufferList(AudioBufferList *bufferList, int channels, int segmentSize);
  10 void freeAudioBufferList(AudioBufferList *bufferList);
  11 CFURLRef getURLFromPath(const char * path);
  12
  13 int createAubioBufferList(AudioBufferList * bufferList, int channels, int segmentSize) {
  14   bufferList->mNumberBuffers = 1;
  15   bufferList->mBuffers[0].mNumberChannels = channels;
  16   bufferList->mBuffers[0].mData = AUBIO_ARRAY(short, segmentSize);
  17   bufferList->mBuffers[0].mDataByteSize = segmentSize * sizeof(short);
  18   return 0;
  19 }
  20
  21 void freeAudioBufferList(AudioBufferList *bufferList) {
  22   UInt32 i = 0;
  23   if (!bufferList) return;
  24   for (i = 0; i < bufferList->mNumberBuffers; i++) {
  25     if (bufferList->mBuffers[i].mData) {
  26       AUBIO_FREE(bufferList->mBuffers[i].mData);
  27       bufferList->mBuffers[i].mData = NULL;
  28     }
  29   }
  30   bufferList = NULL;
  31 }
  32
  33 CFURLRef getURLFromPath(const char * path) {
  34   CFStringRef cfTotalPath = CFStringCreateWithCString (kCFAllocatorDefault,
  35       path, kCFStringEncodingUTF8);
  36
  37   return CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfTotalPath,
  38       kCFURLPOSIXPathStyle, false);
  39 }
  40
  41 #endif /* __APPLE__ */