void CachingReaderWorker::processChunkReadRequest(
ChunkReadRequest* request,
ReaderStatusUpdate* update) {
//qDebug() << "Processing ChunkReadRequest for" << chunk_number;
// Initialize the output parameter
update->chunk = request->chunk;
update->chunk->frameCount = 0;
const int chunk_number = request->chunk->chunk_number;
if (!m_pAudioSource || chunk_number < 0) {
update->status = CHUNK_READ_INVALID;
return;
}
const SINT chunkFrameIndex =
frameForChunk(chunk_number);
if (!m_pAudioSource->isValidFrameIndex(chunkFrameIndex)) {
// Frame index out of range
update->status = CHUNK_READ_INVALID;
return;
}
const SINT seekFrameIndex =
m_pAudioSource->seekSampleFrame(chunkFrameIndex);
if (seekFrameIndex != chunkFrameIndex) {
// Failed to seek to the requested index.
// Corrupt file? -> Stop reading!
qWarning() << "Failed to seek chunk position";
update->status = CHUNK_READ_INVALID;
return;
}
const SINT framesRemaining =
m_pAudioSource->getFrameIndexMax() - seekFrameIndex;
const SINT framesToRead =
math_min(kFramesPerChunk, framesRemaining);
if (0 >= framesToRead) {
// No more data available for reading
update->status = CHUNK_READ_EOF;
return;
}
const SINT framesRead =
m_pAudioSource->readSampleFramesStereo(
framesToRead, request->chunk->stereoSamples, kSamplesPerChunk);
DEBUG_ASSERT(framesRead <= framesToRead);
if (framesRead < framesToRead) {
// Failed to read data! Corrupt file?
qWarning() << "Failed to read chunk samples";
update->status = CHUNK_READ_INVALID;
return;
}
DEBUG_ASSERT(framesRead == framesToRead);
update->status = CHUNK_READ_SUCCESS;
update->chunk->frameCount = framesRead;
}
void CachingReaderWorker::processChunkReadRequest(
ChunkReadRequest* request,
ReaderStatusUpdate* update) {
//qDebug() << "Processing ChunkReadRequest for" << chunk_number;
// Initialize the output parameter
update->chunk = request->chunk;
update->chunk->frameCountRead = 0;
update->chunk->frameCountTotal = 0;
const int chunk_number = request->chunk->chunk_number;
if (!m_pAudioSource || chunk_number < 0) {
update->status = CHUNK_READ_INVALID;
return;
}
const SINT chunkFrameIndex =
frameForChunk(chunk_number);
if (!m_pAudioSource->isValidFrameIndex(chunkFrameIndex)) {
// Frame index out of range
qWarning() << "Invalid chunk seek position"
<< chunkFrameIndex;
update->status = CHUNK_READ_INVALID;
return;
}
if (m_pAudioSource->getMaxFrameIndex() <= chunkFrameIndex) {
// No more data available for reading
update->status = CHUNK_READ_EOF;
return;
}
const SINT seekFrameIndex =
m_pAudioSource->seekSampleFrame(chunkFrameIndex);
if (seekFrameIndex != chunkFrameIndex) {
// Failed to seek to the requested index. The file might
// be corrupt and decoding should be aborted.
qWarning() << "Failed to seek chunk position"
<< seekFrameIndex << "<>" << chunkFrameIndex;
update->status = CHUNK_READ_INVALID;
return;
}
const SINT framesRemaining =
m_pAudioSource->getMaxFrameIndex() - seekFrameIndex;
const SINT framesToRead =
math_min(kFramesPerChunk, framesRemaining);
if (0 >= framesToRead) {
// No more data available for reading
update->status = CHUNK_READ_EOF;
return;
}
const SINT framesRead =
m_pAudioSource->readSampleFramesStereo(
framesToRead, request->chunk->stereoSamples, kSamplesPerChunk);
DEBUG_ASSERT(framesRead <= framesToRead);
update->chunk->frameCountRead = framesRead;
update->chunk->frameCountTotal = framesToRead;
if (framesRead < framesToRead) {
// Incomplete read! Corrupt file?
qWarning() << "Incomplete chunk read @" << seekFrameIndex
<< "[" << m_pAudioSource->getMinFrameIndex()
<< "," << m_pAudioSource->getFrameCount()
<< "]:" << framesRead << "<" << framesToRead;
SampleUtil::clear(
request->chunk->stereoSamples + (framesRead * kChunkChannels),
(framesToRead - framesRead) * kChunkChannels);
update->status = CHUNK_READ_PARTIAL;
} else {
update->status = CHUNK_READ_SUCCESS;
}
}