+ _info.format_name = "";
+
+ if (absd.mFormatID == kAudioFormatLinearPCM) {
+ if (absd.mFormatFlags & kAudioFormatFlagIsBigEndian) {
+ _info.format_name += "big-endian";
+ } else {
+ _info.format_name += "little-endian";
+ }
+
+ char buf[32];
+ snprintf (buf, sizeof (buf), " %" PRIu32 " bit", absd.mBitsPerChannel);
+ _info.format_name += buf;
+ _info.format_name += '\n';
+
+ if (absd.mFormatFlags & kAudioFormatFlagIsFloat) {
+ _info.format_name += "float";
+ } else {
+ if (absd.mFormatFlags & kAudioFormatFlagIsSignedInteger) {
+ _info.format_name += "signed";
+ } else {
+ _info.format_name += "unsigned";
+ }
+ /* integer is typical, do not show it */
+ }
+
+ if (_info.channels > 1) {
+ if (absd.mFormatFlags & kAudioFormatFlagIsNonInterleaved) {
+ _info.format_name += " noninterleaved";
+ }
+ /* interleaved is the normal case, do not show it */
+ }
+
+ _info.format_name += ' ';
+ }
+
+ switch (absd.mFormatID) {
+ case kAudioFormatLinearPCM:
+ _info.format_name += "PCM";
+ break;
+
+ case kAudioFormatAC3:
+ _info.format_name += "AC3";
+ break;
+
+ case kAudioFormat60958AC3:
+ _info.format_name += "60958 AC3";
+ break;
+
+ case kAudioFormatMPEGLayer1:
+ _info.format_name += "MPEG-1";
+ break;
+
+ case kAudioFormatMPEGLayer2:
+ _info.format_name += "MPEG-2";
+ break;
+
+ case kAudioFormatMPEGLayer3:
+ _info.format_name += "MPEG-3";
+ break;
+
+ case kAudioFormatAppleIMA4:
+ _info.format_name += "IMA-4";
+ break;
+
+ case kAudioFormatMPEG4AAC:
+ _info.format_name += "AAC";
+ break;
+
+ case kAudioFormatMPEG4CELP:
+ _info.format_name += "CELP";
+ break;
+
+ case kAudioFormatMPEG4HVXC:
+ _info.format_name += "HVXC";
+ break;
+
+ case kAudioFormatMPEG4TwinVQ:
+ _info.format_name += "TwinVQ";
+ break;
+
+ /* these really shouldn't show up, but we should do something
+ somewhere else to make sure that doesn't happen. until
+ that is guaranteed, print something anyway.
+ */
+
+ case kAudioFormatTimeCode:
+ _info.format_name += "timecode";
+ break;
+
+ case kAudioFormatMIDIStream:
+ _info.format_name += "MIDI";
+ break;
+
+ case kAudioFormatParameterValueStream:
+ _info.format_name += "parameter values";
+ break;
+ }