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configurable PCM format

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git-svn-id: svn://elaine/murooma/trunk@194 d8a302eb-03bc-478d-80e4-98257eca68ef
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(no author) 2014-08-18 19:13:42 +00:00
parent 5938890297
commit c05af700eb
4 changed files with 125 additions and 65 deletions
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40
common/chunk.cpp
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@ -3,40 +3,50 @@
#include <iostream>
Chunk::Chunk(WireChunk* _wireChunk) : idx(0), wireChunk(_wireChunk)
Chunk::Chunk(size_t hz, size_t channels, size_t bitPerSample, WireChunk* _wireChunk) : wireChunk(_wireChunk), hz_(hz), channels_(channels), bytesPerSample_(bitPerSample/8), frameSize_(bytesPerSample_*channels_), idx(0)
{
}
Chunk::Chunk(size_t hz, size_t channels, size_t bitPerSample, size_t ms) : hz_(hz), channels_(channels), bytesPerSample_(bitPerSample/8), frameSize_(bytesPerSample_*channels_), idx(0)
{
wireChunk = new WireChunk;
wireChunk->length = hz*channels*bytesPerSample_*ms / 1000;
wireChunk->payload = (char*)malloc(wireChunk->length);
}
Chunk::~Chunk()
{
free(wireChunk->payload);
delete wireChunk;
}
bool Chunk::isEndOfChunk()
bool Chunk::isEndOfChunk() const
{
return idx >= WIRE_CHUNK_SIZE;
return idx >= (wireChunk->length / frameSize_);
}
bool Chunk::getNext(int16_t& _result)
double Chunk::getDuration() const
{
if (isEndOfChunk())
return false;
_result = wireChunk->payload[idx++];
return true;
// std::cout << "len: " << wireChunk->length << ", channels: " << channels_ << ", bytesPerSample: " << bytesPerSample_ << ", hz: " << hz_ << "\n";
return wireChunk->length / (channels_ * bytesPerSample_ * hz_ / 1000.);
}
int Chunk::read(short* _outputBuffer, int _count)
{
int result = _count;
if (idx + _count > WIRE_CHUNK_SIZE)
result = WIRE_CHUNK_SIZE - idx;
if (_outputBuffer != NULL)
memcpy(_outputBuffer, &wireChunk->payload[idx], sizeof(int16_t)*result);
int Chunk::read(void* outputBuffer, size_t frameCount)
{
//std::cout << "read: " << frameCount << std::endl;
int result = frameCount;
if (idx + frameCount > wireChunk->length / frameSize_)
result = (wireChunk->length / frameSize_) - idx;
if (outputBuffer != NULL)
memcpy(outputBuffer, wireChunk->payload + frameSize_*idx, frameSize_*result);
idx += result;
return result;