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#include "wf_directsound.h"
#include "wf_interface.h"
#include "wf_info.h"
#include "wf_rdpsnd.h"
#include <winpr/windows.h>
#define INITGUID
#include <initguid.h>
#include <objbase.h>
#define CINTERFACE 1
#include <mmsystem.h>
#include <dsound.h>
#include <freerdp/log.h>
#define TAG SERVER_TAG("windows")
IDirectSoundCapture8* cap;
IDirectSoundCaptureBuffer8* capBuf;
DSCBUFFERDESC dscbd;
DWORD lastPos;
wfPeerContext* latestPeer;
int wf_rdpsnd_set_latest_peer(wfPeerContext* peer)
{
latestPeer = peer;
return 0;
}
int wf_directsound_activate(RdpsndServerContext* context)
{
HRESULT hr;
wfInfo* wfi;
HANDLE hThread;
LPDIRECTSOUNDCAPTUREBUFFER pDSCB;
wfi = wf_info_get_instance();
if (!wfi)
{
WLog_ERR(TAG, "Failed to wfi instance");
return 1;
}
WLog_DBG(TAG, "RDPSND (direct sound) Activated");
hr = DirectSoundCaptureCreate8(NULL, &cap, NULL);
if (FAILED(hr))
{
WLog_ERR(TAG, "Failed to create sound capture device");
return 1;
}
WLog_INFO(TAG, "Created sound capture device");
dscbd.dwSize = sizeof(DSCBUFFERDESC);
dscbd.dwFlags = 0;
dscbd.dwBufferBytes = wfi->agreed_format->nAvgBytesPerSec;
dscbd.dwReserved = 0;
dscbd.lpwfxFormat = wfi->agreed_format;
dscbd.dwFXCount = 0;
dscbd.lpDSCFXDesc = NULL;
hr = cap->lpVtbl->CreateCaptureBuffer(cap, &dscbd, &pDSCB, NULL);
if (FAILED(hr))
{
WLog_ERR(TAG, "Failed to create capture buffer");
}
WLog_INFO(TAG, "Created capture buffer");
hr = pDSCB->lpVtbl->QueryInterface(pDSCB, &IID_IDirectSoundCaptureBuffer8, (LPVOID*)&capBuf);
if (FAILED(hr))
{
WLog_ERR(TAG, "Failed to QI capture buffer");
}
WLog_INFO(TAG, "Created IDirectSoundCaptureBuffer8");
pDSCB->lpVtbl->Release(pDSCB);
lastPos = 0;
if (!(hThread = CreateThread(NULL, 0, wf_rdpsnd_directsound_thread, latestPeer, 0, NULL)))
{
WLog_ERR(TAG, "Failed to create direct sound thread");
return 1;
}
CloseHandle(hThread);
return 0;
}
static DWORD WINAPI wf_rdpsnd_directsound_thread(LPVOID lpParam)
{
HRESULT hr;
DWORD beg = 0;
DWORD end = 0;
DWORD diff, rate;
wfPeerContext* context;
wfInfo* wfi;
VOID* pbCaptureData = NULL;
DWORD dwCaptureLength = 0;
VOID* pbCaptureData2 = NULL;
DWORD dwCaptureLength2 = 0;
VOID* pbPlayData = NULL;
DWORD dwReadPos = 0;
LONG lLockSize = 0;
wfi = wf_info_get_instance();
if (!wfi)
{
WLog_ERR(TAG, "Failed get instance");
return 1;
}
context = (wfPeerContext*)lpParam;
rate = 1000 / 24;
WLog_INFO(TAG, "Trying to start capture");
hr = capBuf->lpVtbl->Start(capBuf, DSCBSTART_LOOPING);
if (FAILED(hr))
{
WLog_ERR(TAG, "Failed to start capture");
}
WLog_INFO(TAG, "Capture started");
while (1)
{
end = GetTickCount();
diff = end - beg;
if (diff < rate)
{
Sleep(rate - diff);
}
beg = GetTickCount();
if (wf_rdpsnd_lock() > 0)
{
// check for main exit condition
if (wfi->snd_stop == TRUE)
{
wf_rdpsnd_unlock();
break;
}
hr = capBuf->lpVtbl->GetCurrentPosition(capBuf, NULL, &dwReadPos);
if (FAILED(hr))
{
WLog_ERR(TAG, "Failed to get read pos");
wf_rdpsnd_unlock();
break;
}
lLockSize = dwReadPos - lastPos; // dscbd.dwBufferBytes;
if (lLockSize < 0)
lLockSize += dscbd.dwBufferBytes;
// WLog_DBG(TAG, "Last, read, lock = [%"PRIu32", %"PRIu32", %"PRId32"]\n", lastPos,
// dwReadPos, lLockSize);
if (lLockSize == 0)
{
wf_rdpsnd_unlock();
continue;
}
hr = capBuf->lpVtbl->Lock(capBuf, lastPos, lLockSize, &pbCaptureData, &dwCaptureLength,
&pbCaptureData2, &dwCaptureLength2, 0L);
if (FAILED(hr))
{
WLog_ERR(TAG, "Failed to lock sound capture buffer");
wf_rdpsnd_unlock();
break;
}
// fwrite(pbCaptureData, 1, dwCaptureLength, pFile);
// fwrite(pbCaptureData2, 1, dwCaptureLength2, pFile);
// FIXME: frames = bytes/(bytespersample * channels)
context->rdpsnd->SendSamples(context->rdpsnd, pbCaptureData, dwCaptureLength / 4,
(UINT16)(beg & 0xffff));
context->rdpsnd->SendSamples(context->rdpsnd, pbCaptureData2, dwCaptureLength2 / 4,
(UINT16)(beg & 0xffff));
hr = capBuf->lpVtbl->Unlock(capBuf, pbCaptureData, dwCaptureLength, pbCaptureData2,
dwCaptureLength2);
if (FAILED(hr))
{
WLog_ERR(TAG, "Failed to unlock sound capture buffer");
wf_rdpsnd_unlock();
return 0;
}
// TODO keep track of location in buffer
lastPos += dwCaptureLength;
lastPos %= dscbd.dwBufferBytes;
lastPos += dwCaptureLength2;
lastPos %= dscbd.dwBufferBytes;
wf_rdpsnd_unlock();
}
}
WLog_INFO(TAG, "Trying to stop sound capture");
hr = capBuf->lpVtbl->Stop(capBuf);
if (FAILED(hr))
{
WLog_ERR(TAG, "Failed to stop capture");
}
WLog_INFO(TAG, "Capture stopped");
capBuf->lpVtbl->Release(capBuf);
cap->lpVtbl->Release(cap);
lastPos = 0;
return 0;
}
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