void CAComponentDescription::_CAShowComponentDescription(const AudioComponentDescription *desc, FILE* file)
{
if (desc)
{
char str[24];
fprintf (file, "AudioComponentDescription: %s - ", CAStringForOSType(desc->componentType, str, sizeof(str)));
fprintf (file, "%s - ", CAStringForOSType(desc->componentSubType, str, sizeof(str)));
fprintf (file, "%s", CAStringForOSType(desc->componentManufacturer, str, sizeof(str)));
fprintf (file, ", 0x%X, 0x%X\n", (int)desc->componentFlags, (int)desc->componentFlagsMask);
}
}
char *CAStreamBasicDescription::AsString(char *buf, size_t _bufsize) const
{
int bufsize = (int)_bufsize; // must be signed to protect against overflow
char *theBuffer = buf;
int nc;
char formatID[24];
CAStringForOSType (mFormatID, formatID);
nc = snprintf(buf, bufsize, "%2d ch, %6.0f Hz, %s (0x%08X) ", (int)NumberChannels(), mSampleRate, formatID, (int)mFormatFlags);
buf += nc;
if ((bufsize -= nc) <= 0) goto exit;
if (mFormatID == kAudioFormatLinearPCM) {
bool isInt = !(mFormatFlags & kLinearPCMFormatFlagIsFloat);
int wordSize = SampleWordSize();
const char *endian = (wordSize > 1) ?
((mFormatFlags & kLinearPCMFormatFlagIsBigEndian) ? " big-endian" : " little-endian" ) : "";
const char *sign = isInt ?
((mFormatFlags & kLinearPCMFormatFlagIsSignedInteger) ? " signed" : " unsigned") : "";
const char *floatInt = isInt ? "integer" : "float";
char packed[32];
if (wordSize > 0 && PackednessIsSignificant()) {
if (mFormatFlags & kLinearPCMFormatFlagIsPacked)
snprintf(packed, sizeof(packed), "packed in %d bytes", wordSize);
else
snprintf(packed, sizeof(packed), "unpacked in %d bytes", wordSize);
} else
packed[0] = '\0';
const char *align = (wordSize > 0 && AlignmentIsSignificant()) ?
((mFormatFlags & kLinearPCMFormatFlagIsAlignedHigh) ? " high-aligned" : " low-aligned") : "";
const char *deinter = (mFormatFlags & kAudioFormatFlagIsNonInterleaved) ? ", deinterleaved" : "";
const char *commaSpace = (packed[0]!='\0') || (align[0]!='\0') ? ", " : "";
char bitdepth[20];
int fracbits = (mFormatFlags & kLinearPCMFormatFlagsSampleFractionMask) >> kLinearPCMFormatFlagsSampleFractionShift;
if (fracbits > 0)
snprintf(bitdepth, sizeof(bitdepth), "%d.%d", (int)mBitsPerChannel - fracbits, fracbits);
else
snprintf(bitdepth, sizeof(bitdepth), "%d", (int)mBitsPerChannel);
/* nc =*/ snprintf(buf, bufsize, "%s-bit%s%s %s%s%s%s%s",
bitdepth, endian, sign, floatInt,
commaSpace, packed, align, deinter);
// buf += nc; if ((bufsize -= nc) <= 0) goto exit;
} else if (mFormatID == 'alac') { // kAudioFormatAppleLossless
char *CAStreamBasicDescription::AsString(char *buf, size_t _bufsize, bool brief /*=false*/) const
{
int bufsize = (int)_bufsize; // must be signed to protect against overflow
char *theBuffer = buf;
int nc;
char formatID[24];
CAStringForOSType(mFormatID, formatID, sizeof(formatID));
if (brief) {
CommonPCMFormat com;
bool interleaved;
if (IdentifyCommonPCMFormat(com, &interleaved) && com != kPCMFormatOther) {
const char *desc;
switch (com) {
case kPCMFormatInt16:
desc = "Int16";
break;
case kPCMFormatFixed824:
desc = "Int8.24";
break;
case kPCMFormatFloat32:
desc = "Float32";
break;
case kPCMFormatFloat64:
desc = "Float64";
break;
default:
desc = NULL;
break;
}
if (desc) {
const char *inter ="";
if (mChannelsPerFrame > 1)
inter = !interleaved ? ", non-inter" : ", inter";
snprintf(buf, static_cast<size_t>(bufsize), "%2d ch, %6.0f Hz, %s%s", (int)mChannelsPerFrame, mSampleRate, desc, inter);
return theBuffer;
}
}
if (mChannelsPerFrame == 0 && mSampleRate == 0.0 && mFormatID == 0) {
snprintf(buf, static_cast<size_t>(bufsize), "%2d ch, %6.0f Hz", (int)mChannelsPerFrame, mSampleRate);
return theBuffer;
}
}
nc = snprintf(buf, static_cast<size_t>(bufsize), "%2d ch, %6.0f Hz, %s (0x%08X) ", (int)NumberChannels(), mSampleRate, formatID, (int)mFormatFlags);
buf += nc; if ((bufsize -= nc) <= 0) goto exit;
if (mFormatID == kAudioFormatLinearPCM) {
bool isInt = !(mFormatFlags & kLinearPCMFormatFlagIsFloat);
int wordSize = static_cast<int>(SampleWordSize());
const char *endian = (wordSize > 1) ?
((mFormatFlags & kLinearPCMFormatFlagIsBigEndian) ? " big-endian" : " little-endian" ) : "";
const char *sign = isInt ?
((mFormatFlags & kLinearPCMFormatFlagIsSignedInteger) ? " signed" : " unsigned") : "";
const char *floatInt = isInt ? "integer" : "float";
char packed[32];
if (wordSize > 0 && PackednessIsSignificant()) {
if (mFormatFlags & kLinearPCMFormatFlagIsPacked)
snprintf(packed, sizeof(packed), "packed in %d bytes", wordSize);
else
snprintf(packed, sizeof(packed), "unpacked in %d bytes", wordSize);
} else
packed[0] = '\0';
const char *align = (wordSize > 0 && AlignmentIsSignificant()) ?
((mFormatFlags & kLinearPCMFormatFlagIsAlignedHigh) ? " high-aligned" : " low-aligned") : "";
const char *deinter = (mFormatFlags & kAudioFormatFlagIsNonInterleaved) ? ", deinterleaved" : "";
const char *commaSpace = (packed[0]!='\0') || (align[0]!='\0') ? ", " : "";
char bitdepth[20];
int fracbits = (mFormatFlags & kLinearPCMFormatFlagsSampleFractionMask) >> kLinearPCMFormatFlagsSampleFractionShift;
if (fracbits > 0)
snprintf(bitdepth, sizeof(bitdepth), "%d.%d", (int)mBitsPerChannel - fracbits, fracbits);
else
snprintf(bitdepth, sizeof(bitdepth), "%d", (int)mBitsPerChannel);
/*nc =*/ snprintf(buf, static_cast<size_t>(bufsize), "%s-bit%s%s %s%s%s%s%s",
bitdepth, endian, sign, floatInt,
commaSpace, packed, align, deinter);
// buf += nc; if ((bufsize -= nc) <= 0) goto exit;
} else if (mFormatID == 'alac') { // kAudioFormatAppleLossless
