status_t
BBufferGroup::AddBuffersTo(BMessage* message, const char* name, bool needLock)
{
CALLED();
if (fInitError != B_OK)
return B_NO_INIT;
// BeOS R4 legacy API. Implemented as a wrapper around GetBufferList
// "needLock" is ignored, GetBufferList will do locking
if (message == NULL)
return B_BAD_VALUE;
if (name == NULL || strlen(name) == 0)
return B_BAD_VALUE;
BBuffer* buffers[fBufferCount];
status_t status = GetBufferList(fBufferCount, buffers);
if (status != B_OK)
return status;
for (int32 i = 0; i < fBufferCount; i++) {
status = message->AddInt32(name, int32(buffers[i]->ID()));
if (status != B_OK)
return status;
}
return B_OK;
}
void CAAudioFileWriter::WriteBuffer(CABufferQueue::Buffer *b)
{
CABufferList *ioMemory = b->GetBufferList();
CABufferList *fileBuffers = GetBufferList();
UInt32 nFrames = b->FrameCount();
fileBuffers->SetFrom(ioMemory, GetBytesPerFrame() * nFrames);
mFile->Write(nFrames, &fileBuffers->GetModifiableBufferList());
b->SetEmpty();
}
void CAAudioFileReader::ReadBuffer(FileReadBuffer *b)
{
b->SetEmpty();
CABufferList *ioMemory = b->GetBufferList();
CABufferList *fileBuffers = GetBufferList();
fileBuffers->SetFrom(ioMemory);
UInt32 nFrames = GetBufferSizeFrames();
SInt64 curFrame = mFile->Tell();
mFile->Read(nFrames, &fileBuffers->GetModifiableBufferList());
b->UpdateAfterRead(curFrame, nFrames);
}
