mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-07 04:05:49 +00:00
116 lines
2.6 KiB
C++
116 lines
2.6 KiB
C++
/* vim:set ts=2 sw=2 sts=2 et cindent: */
|
|
/* 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/. */
|
|
|
|
#ifndef _DirectShowUtils_h_
|
|
#define _DirectShowUtils_h_
|
|
|
|
#include <stdint.h>
|
|
#include "dshow.h"
|
|
#include "DShowTools.h"
|
|
#include "prlog.h"
|
|
|
|
namespace mozilla {
|
|
|
|
// Win32 "Event" wrapper. Must be paired with a CriticalSection to create a
|
|
// Java-style "monitor".
|
|
class Signal {
|
|
public:
|
|
|
|
Signal(CriticalSection* aLock)
|
|
: mLock(aLock)
|
|
{
|
|
CriticalSectionAutoEnter lock(*mLock);
|
|
mEvent = CreateEvent(nullptr, FALSE, FALSE, nullptr);
|
|
}
|
|
|
|
~Signal() {
|
|
CriticalSectionAutoEnter lock(*mLock);
|
|
CloseHandle(mEvent);
|
|
}
|
|
|
|
// Lock must be held.
|
|
void Notify() {
|
|
SetEvent(mEvent);
|
|
}
|
|
|
|
// Lock must be held. Check the wait condition before waiting!
|
|
HRESULT Wait() {
|
|
mLock->Leave();
|
|
DWORD result = WaitForSingleObject(mEvent, INFINITE);
|
|
mLock->Enter();
|
|
return result == WAIT_OBJECT_0 ? S_OK : E_FAIL;
|
|
}
|
|
|
|
private:
|
|
CriticalSection* mLock;
|
|
HANDLE mEvent;
|
|
};
|
|
|
|
HRESULT
|
|
AddGraphToRunningObjectTable(IUnknown *aUnkGraph, DWORD *aOutRotRegister);
|
|
|
|
void
|
|
RemoveGraphFromRunningObjectTable(DWORD aRotRegister);
|
|
|
|
const char*
|
|
GetGraphNotifyString(long evCode);
|
|
|
|
// Creates a filter and adds it to a graph.
|
|
HRESULT
|
|
CreateAndAddFilter(IGraphBuilder* aGraph,
|
|
REFGUID aFilterClsId,
|
|
LPCWSTR aFilterName,
|
|
IBaseFilter **aOutFilter);
|
|
|
|
HRESULT
|
|
AddMP3DMOWrapperFilter(IGraphBuilder* aGraph,
|
|
IBaseFilter **aOutFilter);
|
|
|
|
// Connects the output pin on aOutputFilter to an input pin on
|
|
// aInputFilter, in aGraph.
|
|
HRESULT
|
|
ConnectFilters(IGraphBuilder* aGraph,
|
|
IBaseFilter* aOutputFilter,
|
|
IBaseFilter* aInputFilter);
|
|
|
|
HRESULT
|
|
MatchUnconnectedPin(IPin* aPin,
|
|
PIN_DIRECTION aPinDir,
|
|
bool *aOutMatches);
|
|
|
|
// Converts from microseconds to DirectShow "Reference Time"
|
|
// (hundreds of nanoseconds).
|
|
inline int64_t
|
|
UsecsToRefTime(const int64_t aUsecs)
|
|
{
|
|
return aUsecs * 10;
|
|
}
|
|
|
|
// Converts from DirectShow "Reference Time" (hundreds of nanoseconds)
|
|
// to microseconds.
|
|
inline int64_t
|
|
RefTimeToUsecs(const int64_t hRefTime)
|
|
{
|
|
return hRefTime / 10;
|
|
}
|
|
|
|
// Converts from DirectShow "Reference Time" (hundreds of nanoseconds)
|
|
// to seconds.
|
|
inline double
|
|
RefTimeToSeconds(const REFERENCE_TIME aRefTime)
|
|
{
|
|
return double(aRefTime) / 10000000;
|
|
}
|
|
|
|
|
|
#if defined(PR_LOGGING)
|
|
const char*
|
|
GetDirectShowGuidName(const GUID& aGuid);
|
|
#endif
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif
|