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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 WMFUtils_h
#define WMFUtils_h
#include "WMF.h"
#include "nsString.h"
#include "nsRect.h"
#include "TimeUnits.h"
#include "VideoUtils.h"
// Various utilities shared by WMF backend files.
namespace mozilla {
// Converts from microseconds to hundreds of nanoseconds.
// We use microseconds for our timestamps, whereas WMF uses
// hundreds of nanoseconds.
inline int64_t
UsecsToHNs(int64_t aUsecs) {
return aUsecs * 10;
}
// Converts from hundreds of nanoseconds to microseconds.
// We use microseconds for our timestamps, whereas WMF uses
// hundreds of nanoseconds.
inline int64_t
HNsToUsecs(int64_t hNanoSecs) {
return hNanoSecs / 10;
}
HRESULT
HNsToFrames(int64_t aHNs, uint32_t aRate, int64_t* aOutFrames);
HRESULT
GetDefaultStride(IMFMediaType *aType, uint32_t aWidth, uint32_t* aOutStride);
int32_t
MFOffsetToInt32(const MFOffset& aOffset);
// Gets the sub-region of the video frame that should be displayed.
// See: http://msdn.microsoft.com/en-us/library/windows/desktop/bb530115(v=vs.85).aspx
HRESULT
GetPictureRegion(IMFMediaType* aMediaType, nsIntRect& aOutPictureRegion);
// Returns the duration of a IMFSample in TimeUnit.
// Returns media::TimeUnit::Invalid() on failure.
media::TimeUnit
GetSampleDuration(IMFSample* aSample);
// Returns the presentation time of a IMFSample in TimeUnit.
// Returns media::TimeUnit::Invalid() on failure.
media::TimeUnit
GetSampleTime(IMFSample* aSample);
inline bool
IsFlagSet(DWORD flags, DWORD pattern) {
return (flags & pattern) == pattern;
}
} // namespace mozilla
#endif
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