diff options
Diffstat (limited to 'src/jogl/native/libav/ffmpeg_dshow.c')
| -rw-r--r-- | src/jogl/native/libav/ffmpeg_dshow.c | 209 |
1 files changed, 209 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..4f8fedb9f --- /dev/null +++ b/src/jogl/native/libav/ffmpeg_dshow.c @@ -0,0 +1,209 @@ +/** + * 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> +#include <dshow.h> +#include <tchar.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); + #else + _sntprintf(pDest, destLen, _T("%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]: FName %S\n", i, var.bstrVal); + } + VariantClear(&var); + } else if( verbose ) { + fprintf(stderr, "DShowParser: Dev[%d]: cannot read FName..\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 |