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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MFMediaEngineExtension.h"
#include "MFMediaSource.h"
#include "MFMediaEngineUtils.h"
namespace mozilla {
#define LOG(msg, ...) \
MOZ_LOG(gMFMediaEngineLog, LogLevel::Debug, \
("MFMediaEngineExtension=%p, " msg, this, ##__VA_ARGS__))
using Microsoft::WRL::ComPtr;
void MFMediaEngineExtension::SetMediaSource(IMFMediaSource* aMediaSource) {
LOG("SetMediaSource=%p", aMediaSource);
mMediaSource = aMediaSource;
}
// https://docs.microsoft.com/en-us/windows/win32/api/mfmediaengine/nf-mfmediaengine-imfmediaengineextension-begincreateobject
IFACEMETHODIMP MFMediaEngineExtension::BeginCreateObject(
BSTR aUrl, IMFByteStream* aByteStream, MF_OBJECT_TYPE aType,
IUnknown** aCancelCookie, IMFAsyncCallback* aCallback, IUnknown* aState) {
if (aCancelCookie) {
// We don't support a cancel cookie.
*aCancelCookie = nullptr;
}
if (aType != MF_OBJECT_MEDIASOURCE) {
LOG("Only support media source type");
return MF_E_UNEXPECTED;
}
MOZ_ASSERT(mMediaSource);
ComPtr<IMFAsyncResult> result;
ComPtr<IUnknown> sourceUnknown = mMediaSource;
RETURN_IF_FAILED(wmf::MFCreateAsyncResult(sourceUnknown.Get(), aCallback,
aState, &result));
RETURN_IF_FAILED(result->SetStatus(S_OK));
LOG("Creating object");
mIsObjectCreating = true;
RETURN_IF_FAILED(aCallback->Invoke(result.Get()));
return S_OK;
}
IFACEMETHODIMP MFMediaEngineExtension::CancelObjectCreation(
IUnknown* aCancelCookie) {
return MF_E_UNEXPECTED;
}
IFACEMETHODIMP MFMediaEngineExtension::EndCreateObject(IMFAsyncResult* aResult,
IUnknown** aRetObj) {
*aRetObj = nullptr;
if (!mIsObjectCreating) {
LOG("No object is creating, not an expected call");
return MF_E_UNEXPECTED;
}
RETURN_IF_FAILED(aResult->GetStatus());
RETURN_IF_FAILED(aResult->GetObject(aRetObj));
LOG("End of creating object");
mIsObjectCreating = false;
return S_OK;
}
IFACEMETHODIMP MFMediaEngineExtension::CanPlayType(
BOOL aIsAudioOnly, BSTR aMimeType, MF_MEDIA_ENGINE_CANPLAY* aResult) {
// We use MF_MEDIA_ENGINE_EXTENSION to resolve as custom media source for
// MFMediaEngine, MIME types are not used.
*aResult = MF_MEDIA_ENGINE_CANPLAY_NOT_SUPPORTED;
return S_OK;
}
// TODO : break cycle of mMediaSource
#undef LOG
} // namespace mozilla
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