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