/// <summary>
/// Called instead of a constructor to acquire a WaveWriter
/// </summary>
/// <remarks>
/// Be sure to call Stop to close the object
/// </remarks>
/// <param name="fileName">Name the file to write to</param>
/// <param name="WaveFormat">Pointer to a WAVEFORMATEX structure describing the audio stream</param>
WaveWriter * WaveWriter::Start(const string& fileName, const WAVEFORMATEX * WaveFormat )
{
HANDLE fileHandle = CreateFile(fileName.c_str(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN,
NULL);
if (fileHandle == NULL)
{
return NULL;
}
WaveWriter * writer = new WaveWriter(fileHandle, WaveFormat);
//StringCchCopy(writer->m_szFilename, _countof(writer->m_szFilename), "xxxxxxxxxxxxxx.wav");
// Yes, we do this twice.... Once to advance the write pointer so we don't lose any samples,
// and then once to put in the right length.
writer->WriteFileHeader();
return writer;
}
void WriteSample(s16 r, s16 l)
{
#if 0
#if HOST_OS==OS_WINDOWS
#ifdef LOG_SOUND
rawout.Write(l,r);
#endif
if (!asRingFreeCount())
{
//printf("Buffer overrun\n");
if (settings.aica.LimitFPS)
{
//speed_limit.Wait();
}
else
return;
}
gen_samples++;
//while limit on, 128 samples done, there is a buffer ready to be service AND speed is too fast then wait
if (settings.aica.LimitFPS==1 && gen_samples>128)
{
for(;asRingUsedCount()>BufferSampleCount && (os_GetSeconds()-time_last)<=time_diff;)
;
gen_samples=0;
time_last=os_GetSeconds();
}
#else
if (!asRingFreeCount())
{
if (settings.aica.LimitFPS)
{
while(!asRingFreeCount()) ;
}
else
return;
}
#endif
#endif
const u32 ptr=(WritePtr+1)%RingBufferSampleCount;
RingBuffer[ptr].r=r;
RingBuffer[ptr].l=l;
WritePtr=ptr;
if (WritePtr==(SAMPLE_COUNT-1))
{
os_Push(RingBuffer,SAMPLE_COUNT,settings.aica.LimitFPS);
}
}
void WriteSample(s16 r, s16 l)
{
#ifdef LOG_SOUND
rawout.Write(l,r);
#endif
speed_limit.Reset();
if (!asRingFreeCount())
{
if (settings.LimitFPS)
{
speed_limit.Wait();
}
else
return;
}
gen_samples++;
//while limit on, 128 samples done, there is a buffer ready to be service AND speed is too fast then wait ;p
while (settings.LimitFPS==1 && gen_samples>128 && asRingUsedCount()>BufferSampleCount && QueryPerformanceCounter(&time_now) && (time_now.QuadPart-time_last.QuadPart)<=time_diff.QuadPart )
{
__noop;
}
if (settings.LimitFPS==1 && gen_samples>128)
{
gen_samples=0;
QueryPerformanceCounter(&time_last);
}
const u32 ptr=(WritePtr+1)%RingBufferSampleCount;
RingBuffer[ptr].r=r;
RingBuffer[ptr].l=l;
WritePtr=ptr;
//if (0==(WritePtr&255))
//printf("write done %d %d \n",ReadPtr,WritePtr);
}
