bool Read()
{
Conn->Read((char*) Protocol, sizeof(Protocol), 0);
Command = ReadUShort();
Status.Status = ReadULong();
Flags = ReadUChar();
Flags2 = ReadUShort();
Conn->Read((char*) Pad, sizeof(Pad), 0);
Tid = ReadUShort();
Pid = ReadUShort();
Uid = ReadUShort();
Mid = ReadUShort();
WordCount = ReadUChar();
DeleteArray(ParameterWords);
ParameterWords = new ushort[WordCount];
if (ParameterWords)
{
Conn->Read((char*) ParameterWords, sizeof(ushort)*WordCount, 0);
}
ByteCount = ReadUChar();
DeleteArray(Buffer);
Buffer = new uchar[ByteCount];
if (Buffer)
{
Conn->Read((char*) Buffer, sizeof(uchar)*ByteCount, 0);
}
return true;
}
status_t
AudioFormatConverter::Read(void* buffer, int64 pos, int64 frames)
{
TRACE("AudioFormatConverter::Read(%p, %Ld, %Ld)\n", buffer, pos, frames);
status_t error = InitCheck();
if (error != B_OK) {
TRACE("AudioFormatConverter::Read() done 1\n");
return error;
}
pos += fOutOffset;
if (fFormat.u.raw_audio.format == fSource->Format().u.raw_audio.format
&& fFormat.u.raw_audio.byte_order
== fSource->Format().u.raw_audio.byte_order) {
TRACE("AudioFormatConverter::Read() done 2\n");
return fSource->Read(buffer, pos, frames);
}
int32 inSampleSize = fSource->Format().u.raw_audio.format
& media_raw_audio_format::B_AUDIO_SIZE_MASK;
int32 outSampleSize = fFormat.u.raw_audio.format
& media_raw_audio_format::B_AUDIO_SIZE_MASK;
int32 channelCount = fFormat.u.raw_audio.channel_count;
int32 inFrameSize = inSampleSize * channelCount;
int32 outFrameSize = outSampleSize * channelCount;
char* reformatBuffer = NULL;
char* inBuffer = (char*)buffer;
#ifdef TRACE_AUDIO_CONVERTER
char formatString[256];
string_for_format(fSource->Format(), formatString, 256);
TRACE(" source format: %s\n", formatString);
TRACE(" in format : format: %lx, sample size: %ld, channels: %ld, "
"byte order: %lu\n", fSource->Format().u.raw_audio.format,
inSampleSize, channelCount,
fSource->Format().u.raw_audio.byte_order);
TRACE(" out format: format: %lx, sample size: %ld, channels: %ld, "
"byte order: %lu\n", fFormat.u.raw_audio.format, outSampleSize,
channelCount, fFormat.u.raw_audio.byte_order);
#endif // TRACE_AUDIO_CONVERTER
if (inSampleSize != outSampleSize) {
reformatBuffer = new char[frames * inFrameSize];
inBuffer = reformatBuffer;
}
error = fSource->Read(inBuffer, pos, frames);
// convert samples to host endianess
uint32 hostByteOrder
= (B_HOST_IS_BENDIAN) ? B_MEDIA_BIG_ENDIAN : B_MEDIA_LITTLE_ENDIAN;
if (fSource->Format().u.raw_audio.byte_order != hostByteOrder) {
swap_sample_byte_order(inBuffer, fSource->Format().u.raw_audio.format,
frames * inFrameSize);
}
// convert the sample type
switch (fSource->Format().u.raw_audio.format) {
// float
case media_raw_audio_format::B_AUDIO_FLOAT:
switch (fFormat.u.raw_audio.format) {
case media_raw_audio_format::B_AUDIO_FLOAT:
break;
case media_raw_audio_format::B_AUDIO_INT:
convert(ReadFloat(), WriteInt(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_SHORT:
convert(ReadFloat(), WriteShort(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_UCHAR:
convert(ReadFloat(), WriteUChar(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_CHAR:
convert(ReadFloat(), WriteChar(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
}
break;
// int
case media_raw_audio_format::B_AUDIO_INT:
switch (fFormat.u.raw_audio.format) {
case media_raw_audio_format::B_AUDIO_FLOAT:
convert(ReadInt(), WriteFloat(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_INT:
break;
case media_raw_audio_format::B_AUDIO_SHORT:
convert(ReadInt(), WriteShort(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_UCHAR:
convert(ReadInt(), WriteUChar(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_CHAR:
convert(ReadInt(), WriteChar(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
}
break;
// short
case media_raw_audio_format::B_AUDIO_SHORT:
switch (fFormat.u.raw_audio.format) {
case media_raw_audio_format::B_AUDIO_FLOAT:
convert(ReadShort(), WriteFloat(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_INT:
convert(ReadShort(), WriteInt(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_SHORT:
break;
case media_raw_audio_format::B_AUDIO_UCHAR:
convert(ReadShort(), WriteUChar(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_CHAR:
convert(ReadShort(), WriteChar(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
}
break;
// uchar
case media_raw_audio_format::B_AUDIO_UCHAR:
switch (fFormat.u.raw_audio.format) {
case media_raw_audio_format::B_AUDIO_FLOAT:
convert(ReadUChar(), WriteFloat(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_INT:
convert(ReadUChar(), WriteInt(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_SHORT:
convert(ReadUChar(), WriteShort(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_UCHAR:
break;
case media_raw_audio_format::B_AUDIO_CHAR:
convert(ReadUChar(), WriteChar(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
}
break;
// char
case media_raw_audio_format::B_AUDIO_CHAR:
switch (fFormat.u.raw_audio.format) {
case media_raw_audio_format::B_AUDIO_FLOAT:
convert(ReadChar(), WriteFloat(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_INT:
convert(ReadChar(), WriteInt(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_SHORT:
convert(ReadChar(), WriteShort(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_UCHAR:
convert(ReadChar(), WriteUChar(), inBuffer, (char*)buffer,
frames, inSampleSize, outSampleSize, channelCount);
break;
case media_raw_audio_format::B_AUDIO_CHAR:
break;
}
break;
}
// convert samples to output endianess
if (fFormat.u.raw_audio.byte_order != hostByteOrder) {
swap_sample_byte_order(buffer, fFormat.u.raw_audio.format,
frames * outFrameSize);
}
delete[] reformatBuffer;
TRACE("AudioFormatConverter::Read() done\n");
return B_OK;
}