Adding upstream version 3.3.0+dfsg1.upstream/3.3.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 333 insertions, 0 deletions

diff --git a/server/Windows/wf_wasapi.c b/server/Windows/wf_wasapi.c
new file mode 100644
index 0000000..3925f99
--- /dev/null
+++ b/server/Windows/wf_wasapi.c
@@ -0,0 +1,333 @@
+
+#include "wf_wasapi.h"
+#include "wf_info.h"
+
+#include <initguid.h>
+#include <mmdeviceapi.h>
+#include <functiondiscoverykeys_devpkey.h>
+#include <audioclient.h>
+
+#include <freerdp/log.h>
+#define TAG SERVER_TAG("windows")
+
+//#define REFTIMES_PER_SEC  10000000
+//#define REFTIMES_PER_MILLISEC  10000
+
+#define REFTIMES_PER_SEC 100000
+#define REFTIMES_PER_MILLISEC 100
+
+//#define REFTIMES_PER_SEC  50000
+//#define REFTIMES_PER_MILLISEC  50
+
+#ifndef __MINGW32__
+DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xBCDE0395, 0xE52F, 0x467C, 0x8E, 0x3D, 0xC4, 0x57, 0x92,
+            0x91, 0x69, 0x2E);
+DEFINE_GUID(IID_IMMDeviceEnumerator, 0xA95664D2, 0x9614, 0x4F35, 0xA7, 0x46, 0xDE, 0x8D, 0xB6, 0x36,
+            0x17, 0xE6);
+DEFINE_GUID(IID_IAudioClient, 0x1cb9ad4c, 0xdbfa, 0x4c32, 0xb1, 0x78, 0xc2, 0xf5, 0x68, 0xa7, 0x03,
+            0xb2);
+DEFINE_GUID(IID_IAudioCaptureClient, 0xc8adbd64, 0xe71e, 0x48a0, 0xa4, 0xde, 0x18, 0x5c, 0x39, 0x5c,
+            0xd3, 0x17);
+#endif
+
+LPWSTR devStr = NULL;
+wfPeerContext* latestPeer = NULL;
+
+int wf_rdpsnd_set_latest_peer(wfPeerContext* peer)
+{
+	latestPeer = peer;
+	return 0;
+}
+
+int wf_wasapi_activate(RdpsndServerContext* context)
+{
+	wchar_t* pattern = L"Stereo Mix";
+	HANDLE hThread;
+
+	wf_wasapi_get_device_string(pattern, &devStr);
+
+	if (devStr == NULL)
+	{
+		WLog_ERR(TAG, "Failed to match for output device! Disabling rdpsnd.");
+		return 1;
+	}
+
+	WLog_DBG(TAG, "RDPSND (WASAPI) Activated");
+	if (!(hThread = CreateThread(NULL, 0, wf_rdpsnd_wasapi_thread, latestPeer, 0, NULL)))
+	{
+		WLog_ERR(TAG, "CreateThread failed");
+		return 1;
+	}
+	CloseHandle(hThread);
+
+	return 0;
+}
+
+int wf_wasapi_get_device_string(LPWSTR pattern, LPWSTR* deviceStr)
+{
+	HRESULT hr;
+	IMMDeviceEnumerator* pEnumerator = NULL;
+	IMMDeviceCollection* pCollection = NULL;
+	IMMDevice* pEndpoint = NULL;
+	IPropertyStore* pProps = NULL;
+	LPWSTR pwszID = NULL;
+	unsigned int count;
+
+	CoInitialize(NULL);
+	hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, &IID_IMMDeviceEnumerator,
+	                      (void**)&pEnumerator);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to cocreate device enumerator");
+		exit(1);
+	}
+
+	hr = pEnumerator->lpVtbl->EnumAudioEndpoints(pEnumerator, eCapture, DEVICE_STATE_ACTIVE,
+	                                             &pCollection);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to create endpoint collection");
+		exit(1);
+	}
+
+	pCollection->lpVtbl->GetCount(pCollection, &count);
+	WLog_INFO(TAG, "Num endpoints: %u", count);
+
+	if (count == 0)
+	{
+		WLog_ERR(TAG, "No endpoints!");
+		exit(1);
+	}
+
+	for (unsigned int i = 0; i < count; ++i)
+	{
+		PROPVARIANT nameVar;
+		PropVariantInit(&nameVar);
+
+		hr = pCollection->lpVtbl->Item(pCollection, i, &pEndpoint);
+		if (FAILED(hr))
+		{
+			WLog_ERR(TAG, "Failed to get endpoint %u", i);
+			exit(1);
+		}
+
+		hr = pEndpoint->lpVtbl->GetId(pEndpoint, &pwszID);
+		if (FAILED(hr))
+		{
+			WLog_ERR(TAG, "Failed to get endpoint ID");
+			exit(1);
+		}
+
+		hr = pEndpoint->lpVtbl->OpenPropertyStore(pEndpoint, STGM_READ, &pProps);
+		if (FAILED(hr))
+		{
+			WLog_ERR(TAG, "Failed to open property store");
+			exit(1);
+		}
+
+		hr = pProps->lpVtbl->GetValue(pProps, &PKEY_Device_FriendlyName, &nameVar);
+		if (FAILED(hr))
+		{
+			WLog_ERR(TAG, "Failed to get device friendly name");
+			exit(1);
+		}
+
+		// do this a more reliable way
+		if (wcscmp(pattern, nameVar.pwszVal) < 0)
+		{
+			unsigned int devStrLen;
+			WLog_INFO(TAG, "Using sound ouput endpoint: [%s] (%s)", nameVar.pwszVal, pwszID);
+			// WLog_INFO(TAG, "matched %d characters", wcscmp(pattern, nameVar.pwszVal);
+			devStrLen = wcslen(pwszID);
+			*deviceStr = (LPWSTR)calloc(devStrLen + 1, 2);
+			if (!deviceStr)
+				return -1;
+			wcscpy_s(*deviceStr, devStrLen + 1, pwszID);
+		}
+		CoTaskMemFree(pwszID);
+		pwszID = NULL;
+		PropVariantClear(&nameVar);
+
+		pProps->lpVtbl->Release(pProps);
+		pProps = NULL;
+
+		pEndpoint->lpVtbl->Release(pEndpoint);
+		pEndpoint = NULL;
+	}
+
+	pCollection->lpVtbl->Release(pCollection);
+	pCollection = NULL;
+
+	pEnumerator->lpVtbl->Release(pEnumerator);
+	pEnumerator = NULL;
+	CoUninitialize();
+
+	return 0;
+}
+
+DWORD WINAPI wf_rdpsnd_wasapi_thread(LPVOID lpParam)
+{
+	IMMDeviceEnumerator* pEnumerator = NULL;
+	IMMDevice* pDevice = NULL;
+	IAudioClient* pAudioClient = NULL;
+	IAudioCaptureClient* pCaptureClient = NULL;
+	WAVEFORMATEX* pwfx = NULL;
+	HRESULT hr;
+	REFERENCE_TIME hnsRequestedDuration = REFTIMES_PER_SEC;
+	REFERENCE_TIME hnsActualDuration;
+	UINT32 bufferFrameCount;
+	UINT32 numFramesAvailable;
+	UINT32 packetLength = 0;
+	UINT32 dCount = 0;
+	BYTE* pData;
+
+	wfPeerContext* context;
+	wfInfo* wfi;
+
+	wfi = wf_info_get_instance();
+	context = (wfPeerContext*)lpParam;
+
+	CoInitialize(NULL);
+	hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, &IID_IMMDeviceEnumerator,
+	                      (void**)&pEnumerator);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to cocreate device enumerator");
+		exit(1);
+	}
+
+	hr = pEnumerator->lpVtbl->GetDevice(pEnumerator, devStr, &pDevice);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to cocreate get device");
+		exit(1);
+	}
+
+	hr = pDevice->lpVtbl->Activate(pDevice, &IID_IAudioClient, CLSCTX_ALL, NULL,
+	                               (void**)&pAudioClient);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to activate audio client");
+		exit(1);
+	}
+
+	hr = pAudioClient->lpVtbl->GetMixFormat(pAudioClient, &pwfx);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to get mix format");
+		exit(1);
+	}
+
+	pwfx->wFormatTag = wfi->agreed_format->wFormatTag;
+	pwfx->nChannels = wfi->agreed_format->nChannels;
+	pwfx->nSamplesPerSec = wfi->agreed_format->nSamplesPerSec;
+	pwfx->nAvgBytesPerSec = wfi->agreed_format->nAvgBytesPerSec;
+	pwfx->nBlockAlign = wfi->agreed_format->nBlockAlign;
+	pwfx->wBitsPerSample = wfi->agreed_format->wBitsPerSample;
+	pwfx->cbSize = wfi->agreed_format->cbSize;
+
+	hr = pAudioClient->lpVtbl->Initialize(pAudioClient, AUDCLNT_SHAREMODE_SHARED, 0,
+	                                      hnsRequestedDuration, 0, pwfx, NULL);
+
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to initialize the audio client");
+		exit(1);
+	}
+
+	hr = pAudioClient->lpVtbl->GetBufferSize(pAudioClient, &bufferFrameCount);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to get buffer size");
+		exit(1);
+	}
+
+	hr = pAudioClient->lpVtbl->GetService(pAudioClient, &IID_IAudioCaptureClient,
+	                                      (void**)&pCaptureClient);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to get the capture client");
+		exit(1);
+	}
+
+	hnsActualDuration = (UINT32)REFTIMES_PER_SEC * bufferFrameCount / pwfx->nSamplesPerSec;
+
+	hr = pAudioClient->lpVtbl->Start(pAudioClient);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to start capture");
+		exit(1);
+	}
+
+	dCount = 0;
+
+	while (wfi->snd_stop == FALSE)
+	{
+		DWORD flags;
+
+		Sleep(hnsActualDuration / REFTIMES_PER_MILLISEC / 2);
+
+		hr = pCaptureClient->lpVtbl->GetNextPacketSize(pCaptureClient, &packetLength);
+		if (FAILED(hr))
+		{
+			WLog_ERR(TAG, "Failed to get packet length");
+			exit(1);
+		}
+
+		while (packetLength != 0)
+		{
+			hr = pCaptureClient->lpVtbl->GetBuffer(pCaptureClient, &pData, &numFramesAvailable,
+			                                       &flags, NULL, NULL);
+			if (FAILED(hr))
+			{
+				WLog_ERR(TAG, "Failed to get buffer");
+				exit(1);
+			}
+
+			// Here we are writing the audio data
+			// not sure if this flag is ever set by the system; msdn is not clear about it
+			if (!(flags & AUDCLNT_BUFFERFLAGS_SILENT))
+				context->rdpsnd->SendSamples(context->rdpsnd, pData, packetLength,
+				                             (UINT16)(GetTickCount() & 0xffff));
+
+			hr = pCaptureClient->lpVtbl->ReleaseBuffer(pCaptureClient, numFramesAvailable);
+			if (FAILED(hr))
+			{
+				WLog_ERR(TAG, "Failed to release buffer");
+				exit(1);
+			}
+
+			hr = pCaptureClient->lpVtbl->GetNextPacketSize(pCaptureClient, &packetLength);
+			if (FAILED(hr))
+			{
+				WLog_ERR(TAG, "Failed to get packet length");
+				exit(1);
+			}
+		}
+	}
+
+	pAudioClient->lpVtbl->Stop(pAudioClient);
+	if (FAILED(hr))
+	{
+		WLog_ERR(TAG, "Failed to stop audio client");
+		exit(1);
+	}
+
+	CoTaskMemFree(pwfx);
+
+	if (pEnumerator != NULL)
+		pEnumerator->lpVtbl->Release(pEnumerator);
+
+	if (pDevice != NULL)
+		pDevice->lpVtbl->Release(pDevice);
+
+	if (pAudioClient != NULL)
+		pAudioClient->lpVtbl->Release(pAudioClient);
+
+	if (pCaptureClient != NULL)
+		pCaptureClient->lpVtbl->Release(pCaptureClient);
+
+	CoUninitialize();
+
+	return 0;
+}