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mmdevapi: Be explicit about the units of ACImpl::ofs.

This commit is contained in:
Andrew Eikum 2011-01-04 15:30:32 -06:00 committed by Alexandre Julliard
parent 045cf8c0af
commit 0b608d0f7f
1 changed files with 22 additions and 21 deletions
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43
dlls/mmdevapi/audio.c
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@ -64,7 +64,8 @@ typedef struct ACImpl {
BOOL init, running;
CRITICAL_SECTION *crst;
HANDLE handle;
DWORD locked, flags, bufsize_frames, pad, padpartial, ofs, periodsize_frames, candisconnect;
DWORD locked, flags, candisconnect;
DWORD bufsize_frames, ofs_frames, periodsize_frames, pad, padpartial;
BYTE *buffer;
WAVEFORMATEX *pwfx;
ALuint source;
@ -665,7 +666,7 @@ static int disconnected(ACImpl *This)
return 1;
WARN("Emptying buffer after newly reconnected!\n");
This->pad = This->ofs = 0;
This->pad = This->ofs_frames = 0;
if (This->running)
palcCaptureStart(This->dev);
}
@ -742,18 +743,18 @@ static HRESULT WINAPI AC_GetCurrentPadding(IAudioClient *iface, UINT32 *numpad)
DWORD block = This->pwfx->nBlockAlign;
palcGetIntegerv(This->dev, ALC_CAPTURE_SAMPLES, 1, &avail);
if (avail) {
DWORD ofs = This->ofs + This->pad;
DWORD ofs_frames = This->ofs_frames + This->pad;
BYTE *buf1;
ofs %= This->bufsize_frames;
buf1 = This->buffer + (ofs * block);
ofs_frames %= This->bufsize_frames;
buf1 = This->buffer + (ofs_frames * block);
This->laststamp = gettime();
if (This->handle)
SetEvent(This->handle);
if (ofs + avail <= This->bufsize_frames)
if (ofs_frames + avail <= This->bufsize_frames)
palcCaptureSamples(This->dev, buf1, avail);
else {
DWORD part1 = This->bufsize_frames - ofs;
DWORD part1 = This->bufsize_frames - ofs_frames;
palcCaptureSamples(This->dev, buf1, part1);
palcCaptureSamples(This->dev, This->buffer, avail - part1);
}
@ -763,11 +764,11 @@ static HRESULT WINAPI AC_GetCurrentPadding(IAudioClient *iface, UINT32 *numpad)
if (This->pad > This->bufsize_frames) {
DWORD rest;
WARN("Overflowed! %u frames\n", This->pad - This->bufsize_frames);
This->ofs += This->pad - This->bufsize_frames;
rest = This->ofs % This->periodsize_frames;
This->ofs_frames += This->pad - This->bufsize_frames;
rest = This->ofs_frames % This->periodsize_frames;
if (rest)
This->ofs += This->periodsize_frames - rest;
This->ofs %= This->bufsize_frames;
This->ofs_frames += This->periodsize_frames - rest;
This->ofs_frames %= This->bufsize_frames;
This->pad = This->bufsize_frames;
}
}
@ -1015,7 +1016,7 @@ static HRESULT WINAPI AC_Reset(IAudioClient *iface)
palcCaptureSamples(This->dev, This->buffer, avail);
}
This->pad = This->padpartial = 0;
This->ofs = 0;
This->ofs_frames = 0;
This->frameswritten = 0;
out:
LeaveCriticalSection(This->crst);
@ -1187,9 +1188,9 @@ static HRESULT WINAPI ACR_GetBuffer(IAudioRenderClient *iface, UINT32 frames, BY
/* Exact offset doesn't matter, offset could be 0 forever
* but increasing it is easier to debug */
if (This->parent->ofs + frames > This->parent->bufsize_frames)
This->parent->ofs = 0;
*data = This->parent->buffer + This->parent->ofs * framesize;
if (This->parent->ofs_frames + frames > This->parent->bufsize_frames)
This->parent->ofs_frames = 0;
*data = This->parent->buffer + This->parent->ofs_frames * framesize;
LeaveCriticalSection(This->parent->crst);
return S_OK;
@ -1200,7 +1201,7 @@ static HRESULT WINAPI ACR_ReleaseBuffer(IAudioRenderClient *iface, UINT32 writte
ACRender *This = (ACRender*)iface;
BYTE *buf = This->parent->buffer;
DWORD framesize = This->parent->pwfx->nBlockAlign;
DWORD ofs = This->parent->ofs;
DWORD ofs = This->parent->ofs_frames;
DWORD bufsize = This->parent->bufsize_frames;
DWORD freq = This->parent->pwfx->nSamplesPerSec;
DWORD bpp = This->parent->pwfx->wBitsPerSample;
@ -1226,8 +1227,8 @@ static HRESULT WINAPI ACR_ReleaseBuffer(IAudioRenderClient *iface, UINT32 writte
EnterCriticalSection(This->parent->crst);
This->parent->ofs += written;
This->parent->ofs %= bufsize;
This->parent->ofs_frames += written;
This->parent->ofs_frames %= bufsize;
This->parent->pad += written;
This->parent->frameswritten += written;
This->parent->locked = 0;
@ -1384,7 +1385,7 @@ static HRESULT WINAPI ACC_GetBuffer(IAudioCaptureClient *iface, BYTE **data, UIN
if (This->parent->locked)
goto out;
IAudioCaptureClient_GetNextPacketSize(iface, frames);
ofs = This->parent->ofs;
ofs = This->parent->ofs_frames;
if ( ofs % This->parent->periodsize_frames)
ERR("Unaligned offset %u with %u\n", ofs, This->parent->periodsize_frames);
*data = This->parent->buffer + ofs * block;
@ -1410,8 +1411,8 @@ static HRESULT WINAPI ACC_ReleaseBuffer(IAudioCaptureClient *iface, UINT32 writt
EnterCriticalSection(This->parent->crst);
if (!written || written == This->parent->locked) {
This->parent->locked = 0;
This->parent->ofs += written;
This->parent->ofs %= This->parent->bufsize_frames;
This->parent->ofs_frames += written;
This->parent->ofs_frames %= This->parent->bufsize_frames;
This->parent->pad -= written;
} else if (!This->parent->locked)
hr = AUDCLNT_E_OUT_OF_ORDER;