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Diffstat (limited to 'src/jogl/native/libav/ffmpeg_dshow.c')
-rw-r--r--src/jogl/native/libav/ffmpeg_dshow.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/src/jogl/native/libav/ffmpeg_dshow.c b/src/jogl/native/libav/ffmpeg_dshow.c
new file mode 100644
index 000000000..4f1523a81
--- /dev/null
+++ b/src/jogl/native/libav/ffmpeg_dshow.c
@@ -0,0 +1,215 @@
+/**
+ * Copyright 2013 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+#include "ffmpeg_dshow.h"
+
+#ifdef _WIN32
+
+#include <stdio.h>
+#include <string.h>
+
+// dshow includes strsafe.h, hence tchar.h cannot be used
+// include strsafe.h here for documentation
+// #include <tchar.h>
+#include <strsafe.h>
+#include <dshow.h>
+
+static HRESULT EnumerateDevices(REFGUID category, IEnumMoniker **ppEnum)
+{
+ // Create the System Device Enumerator.
+ ICreateDevEnum *pDevEnum;
+ void *pv = NULL;
+
+ HRESULT hr = CoCreateInstance(&CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, &IID_ICreateDevEnum, (void**)&pDevEnum);
+
+ if (SUCCEEDED(hr)) {
+ // Create an enumerator for the category.
+ hr = pDevEnum->lpVtbl->CreateClassEnumerator(pDevEnum, category, ppEnum,0);
+ if (hr == S_FALSE)
+ {
+ hr = VFW_E_NOT_FOUND; // The category is empty. Treat as an error.
+ }
+ pDevEnum->lpVtbl->Release(pDevEnum);
+ }
+ return hr;
+}
+
+static void getBSTRChars(BSTR bstr, char *pDest, int destLen) {
+
+ #ifdef UNICODE
+ // _sntprintf(pDest, destLen, _T("%s"), bstr);
+ StringCbPrintfW(pDest, destLen, L"%s", bstr);
+ #else
+ // _sntprintf(pDest, destLen, _T("%S"), bstr);
+ StringCchPrintfA(pDest, destLen, "%S", bstr);
+ #endif
+}
+
+
+static int GetDeviceInformation(IEnumMoniker *pEnum, int verbose, int devIdx,
+ char *pDescr, int descrSize,
+ char *pName, int nameSize,
+ char *pPath, int pathSize, int *pWaveID) {
+ IMoniker *pMoniker = NULL;
+ int i=0;
+ int res = devIdx >= 0 ? -1 : 0;
+
+ if( NULL != pDescr ) {
+ *pDescr=0;
+ }
+ if( NULL != pName ) {
+ *pName=0;
+ }
+ if( NULL != pPath ) {
+ *pPath=0;
+ }
+ if( NULL != pWaveID ) {
+ *pWaveID=0;
+ }
+
+ while (pEnum->lpVtbl->Next(pEnum, 1, &pMoniker, NULL) == S_OK) {
+ IPropertyBag *pPropBag;
+ HRESULT hr;
+
+ hr = pMoniker->lpVtbl->BindToStorage(pMoniker, 0, 0, &IID_IPropertyBag, (void**)&pPropBag);
+ if (FAILED(hr)) {
+ if( verbose ) {
+ fprintf(stderr, "DShowParser: Dev[%d]: bind failed ...\n", i);
+ }
+ pMoniker->lpVtbl->Release(pMoniker);
+ continue;
+ }
+ VARIANT var;
+ VariantInit(&var);
+
+ // Get description or friendly name.
+ hr = pPropBag->lpVtbl->Read(pPropBag, L"Description", &var, 0);
+ if (SUCCEEDED(hr)) {
+ if( i == devIdx && NULL != pDescr ) {
+ res = 0;
+ getBSTRChars(var.bstrVal, pDescr, descrSize);
+ }
+ if( verbose ) {
+ fprintf(stderr, "DShowParser: Dev[%d]: Descr %S\n", i, var.bstrVal);
+ }
+ VariantClear(&var);
+ } else if( verbose ) {
+ fprintf(stderr, "DShowParser: Dev[%d]: cannot read Descr..\n", i);
+ }
+
+ hr = pPropBag->lpVtbl->Read(pPropBag, L"FriendlyName", &var, 0);
+ if (SUCCEEDED(hr)) {
+ if( i == devIdx && NULL != pName ) {
+ res = 0;
+ getBSTRChars(var.bstrVal, pName, nameSize);
+ }
+ if( verbose ) {
+ fprintf(stderr, "DShowParser: Dev[%d]: Name %S\n", i, var.bstrVal);
+ }
+ VariantClear(&var);
+ } else if( verbose ) {
+ fprintf(stderr, "DShowParser: Dev[%d]: cannot read Name..\n", i);
+ }
+
+ hr = pPropBag->lpVtbl->Write(pPropBag, L"FriendlyName", &var);
+
+ // WaveInID applies only to audio capture devices.
+ hr = pPropBag->lpVtbl->Read(pPropBag, L"WaveInID", &var, 0);
+ if (SUCCEEDED(hr)) {
+ if( i == devIdx && NULL != pWaveID ) {
+ res = 0;
+ *pWaveID=(int)var.lVal;
+ }
+ if( verbose ) {
+ fprintf(stderr, "DShowParser: Dev[%d]: WaveInID %d\n", i, var.lVal);
+ }
+ VariantClear(&var);
+ }
+
+ hr = pPropBag->lpVtbl->Read(pPropBag, L"DevicePath", &var, 0);
+ if (SUCCEEDED(hr)) {
+ if( i == devIdx && NULL != pPath ) {
+ res = 0;
+ getBSTRChars(var.bstrVal, pPath, pathSize);
+ }
+ if( verbose ) {
+ fprintf(stderr, "DShowParser: Dev[%d]: Path %S\n", i, var.bstrVal);
+ }
+ VariantClear(&var);
+ }
+
+ pPropBag->lpVtbl->Release(pPropBag);
+ pMoniker->lpVtbl->Release(pMoniker);
+
+ if( devIdx >= 0 && i == devIdx ) {
+ break; // done!
+ }
+ i++;
+ }
+ return res;
+}
+
+int findDShowVideoDevice(char * dest, int destSize, int devIdx, int verbose) {
+ int res = -1;
+
+ HRESULT hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
+ if (SUCCEEDED(hr)) {
+ IEnumMoniker *pEnum;
+
+ hr = EnumerateDevices(&CLSID_VideoInputDeviceCategory, &pEnum);
+ if (SUCCEEDED(hr)) {
+ res = GetDeviceInformation(pEnum, verbose, devIdx, NULL /* pDescr */, 0, dest, destSize, NULL /* pPath */, 0, NULL /* pWaveID */);
+ pEnum->lpVtbl->Release(pEnum);
+ if( verbose ) {
+ fprintf(stderr, "DShowParser: Get VideoInputDevice: res %d, '%s'\n", res, dest);
+ }
+ } else if( verbose ) {
+ fprintf(stderr, "DShowParser: Get VideoInputDevice failed\n");
+ }
+ /**
+ hr = EnumerateDevices(&CLSID_AudioInputDeviceCategory, &pEnum);
+ if (SUCCEEDED(hr)) {
+ res = GetDeviceInformation(pEnum, verbose, devIdx, NULL, 0, NULL, 0, NULL, 0, NULL);
+ pEnum->lpVtbl->Release(pEnum);
+ } else if( verbose ) {
+ fprintf(stderr, "DShowParser: Get AudioInputDevice failed\n");
+ } */
+ CoUninitialize();
+ } else if( verbose ) {
+ fprintf(stderr, "DShowParser: CoInit failed\n");
+ }
+ return res;
+}
+
+#else
+
+int findDShowVideoDevice(char * dest, int destSize, int devIdx, int verbose) {
+ return -1;
+}
+
+#endif
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