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git-svn-id: svn://elaine/murooma/trunk@229 d8a302eb-03bc-478d-80e4-98257eca68ef
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(no author) 2014-09-03 21:12:44 +00:00
parent c6ee0960fd
commit a519d0f0dd
9 changed files with 96 additions and 62 deletions
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73
common/message.cpp Normal file
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#include "message.h"
#include <string.h>
#include <iostream>
#include "common/log.h"
PcmChunk::PcmChunk(const SampleFormat& sampleFormat, size_t ms) : WireChunk(), format(sampleFormat), idx(0)
{
payloadSize = format.rate*format.frameSize*ms / 1000;
payload = (char*)malloc(payloadSize);
}
PcmChunk::~PcmChunk()
{
}
bool PcmChunk::isEndOfChunk() const
{
return idx >= getFrameCount();
}
double PcmChunk::getFrameCount() const
{
return (payloadSize / format.frameSize);
}
double PcmChunk::getDuration() const
{
return getFrameCount() / format.msRate();
}
double PcmChunk::getTimeLeft() const
{
return (getFrameCount() - idx) / format.msRate();
}
int PcmChunk::seek(int frames)
{
idx += frames;
if (idx > getFrameCount())
idx = getFrameCount();
if (idx < 0)
idx = 0;
return idx;
}
int PcmChunk::read(void* outputBuffer, size_t frameCount)
{
//logd << "read: " << frameCount << ", total: " << (wireChunk->length / format.frameSize) << ", idx: " << idx;// << std::endl;
int result = frameCount;
if (idx + frameCount > (payloadSize / format.frameSize))
result = (payloadSize / format.frameSize) - idx;
//logd << ", from: " << format.frameSize*idx << ", to: " << format.frameSize*idx + format.frameSize*result;
if (outputBuffer != NULL)
memcpy((char*)outputBuffer, (char*)(payload) + format.frameSize*idx, format.frameSize*result);
idx += result;
//logd << ", new idx: " << idx << ", result: " << result << ", wireChunk->length: " << wireChunk->length << ", format.frameSize: " << format.frameSize << "\n";//std::endl;
return result;
}