MediaSource* MediaSource::Open(PCWSTR url)
{
MF_OBJECT_TYPE ObjectType = MF_OBJECT_INVALID;
IMFSourceResolver* mfSourceResolver = nullptr;
IMFMediaSource* mfMediaSource = nullptr;
IUnknown* pSource = nullptr;
// Create the source resolver.
HRESULT hr = MFCreateSourceResolver(&mfSourceResolver);
// Use the source resolver to create the media source.
hr = mfSourceResolver->CreateObjectFromURL(
url, // URL of the source.
MF_RESOLUTION_MEDIASOURCE, // Create a source object.
nullptr, // Optional property store.
&ObjectType, // Receives the created object type.
&pSource // Receives a pointer to the media source.
);
// Get the IMFMediaSource interface from the media source.
hr = pSource->QueryInterface(IID_PPV_ARGS(&mfMediaSource));
if (pSource) pSource->Release();
if (mfSourceResolver) mfSourceResolver->Release();
return new MediaSource(mfMediaSource);
}
HRESULT CreateMediaSource(
const WCHAR *sURL, // The URL of the file to open.
IMFMediaSource** ppMediaSource // Receives a pointer to the media source.
)
{
if (!sURL)
{
return E_INVALIDARG;
}
if (!ppMediaSource)
{
return E_POINTER;
}
HRESULT hr = S_OK;
MF_OBJECT_TYPE ObjectType = MF_OBJECT_INVALID;
IMFSourceResolver* pSourceResolver = NULL;
IUnknown* pUnkSource = NULL;
// Create the source resolver.
hr = MFCreateSourceResolver(&pSourceResolver);
// Use the source resolver to create the media source.
if (SUCCEEDED(hr))
{
hr = pSourceResolver->CreateObjectFromURL(
sURL, // URL of the source.
MF_RESOLUTION_MEDIASOURCE, // Create a source object.
NULL, // Optional property store.
&ObjectType, // Receives the created object type.
&pUnkSource // Receives a pointer to the media source.
);
}
// Get the IMFMediaSource from the IUnknown pointer.
if (SUCCEEDED(hr))
{
hr = pUnkSource->QueryInterface(IID_PPV_ARGS(ppMediaSource));
}
SafeRelease(&pSourceResolver);
SafeRelease(&pUnkSource);
return hr;
}
/**
* Creates a Media Source.
*
* @param env JNI env
* @param path path
* @param ppMediaSrc media source
* @return HRESULT
*/
HRESULT mf_createMediaSource(JNIEnv *env, jstring path, IMFMediaSource **ppMediaSrc) {
HRESULT res = S_OK;
const LPWSTR pwszFilePath = (LPWSTR)env->GetStringChars(path, NULL);
IUnknown *pUnk = NULL;
IMFSourceResolver *pResolver = NULL;
MF_OBJECT_TYPE ObjectType = MF_OBJECT_INVALID;
*ppMediaSrc = NULL;
res = MFCreateSourceResolver(&pResolver);
if (res != S_OK || pResolver == NULL) {
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to create source resolver");
goto bail;
}
// File format may not match its extension so we ignore the extension
res = pResolver->CreateObjectFromURL(
pwszFilePath,
MF_RESOLUTION_MEDIASOURCE | MF_RESOLUTION_READ | MF_RESOLUTION_CONTENT_DOES_NOT_HAVE_TO_MATCH_EXTENSION_OR_MIME_TYPE,
NULL,
&ObjectType,
&pUnk);
if (res != S_OK || pUnk == NULL) {
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed to create object from url");
goto bail;
}
res = pUnk->QueryInterface(
IID_IMFMediaSource,
(void**)(ppMediaSrc));
if (res != S_OK) {
throwUnsupportedAudioFileExceptionIfError(env, res, "Failed get media source interface");
goto bail;
}
bail:
SAFE_RELEASE(pResolver)
SAFE_RELEASE(pUnk)
env->ReleaseStringChars(path, (jchar *)pwszFilePath);
return res;
}
HRESULT CPlayer::CreateMediaSource(const WCHAR *sURL)
{
TRACE((L"CPlayer::CreateMediaSource\n"));
HRESULT hr = S_OK;
MF_OBJECT_TYPE ObjectType = MF_OBJECT_INVALID;
IMFSourceResolver* pSourceResolver = NULL;
IUnknown* pSource = NULL;
SAFE_RELEASE(m_pSource);
// Create the source resolver.
CHECK_HR(hr = MFCreateSourceResolver(&pSourceResolver));
// Use the source resolver to create the media source.
// Note: For simplicity this sample uses the synchronous method on
// IMFSourceResolver to create the media source. However, creating a
// media source can take a noticeable amount of time, especially for
// a network source. For a more responsive UI, use the asynchronous
// BeginCreateObjectFromURL method.
CHECK_HR(hr = pSourceResolver->CreateObjectFromURL(
sURL, // URL of the source.
MF_RESOLUTION_MEDIASOURCE, // Create a source object.
NULL, // Optional property store.
&ObjectType, // Receives the created object type.
&pSource // Receives a pointer to the media source.
));
// Get the IMFMediaSource interface from the media source.
CHECK_HR(hr = pSource->QueryInterface(__uuidof(IMFMediaSource), (void**)&m_pSource));
done:
SAFE_RELEASE(pSourceResolver);
SAFE_RELEASE(pSource);
return hr;
}
