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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
/* 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 */
#ifndef EncodedFrame_h_
#define EncodedFrame_h_
#include "nsISupportsImpl.h"
#include "mozilla/media/MediaUtils.h"
#include "TimeUnits.h"
#include "VideoUtils.h"
namespace mozilla {
// Represent an encoded frame emitted by an encoder
class EncodedFrame final {
enum FrameType {
VP8_I_FRAME, // VP8 intraframe
VP8_P_FRAME, // VP8 predicted frame
OPUS_AUDIO_FRAME, // Opus audio frame
UNKNOWN // FrameType not set
using ConstFrameData = const media::Refcountable<nsTArray<uint8_t>>;
using FrameData = media::Refcountable<nsTArray<uint8_t>>;
EncodedFrame(const media::TimeUnit& aTime, uint64_t aDuration,
uint64_t aDurationBase, FrameType aFrameType,
RefPtr<ConstFrameData> aData)
: mTime(aTime),
mFrameData(std::move(aData)) {
MOZ_ASSERT_IF(mFrameType == VP8_I_FRAME, mDurationBase == PR_USEC_PER_SEC);
MOZ_ASSERT_IF(mFrameType == VP8_P_FRAME, mDurationBase == PR_USEC_PER_SEC);
MOZ_ASSERT_IF(mFrameType == OPUS_AUDIO_FRAME, mDurationBase == 48000);
// Timestamp in microseconds
const media::TimeUnit mTime;
// The playback duration of this packet in mDurationBase.
const uint64_t mDuration;
// The time base of mDuration.
const uint64_t mDurationBase;
// Represent what is in the FrameData
const FrameType mFrameType;
// Encoded data
const RefPtr<ConstFrameData> mFrameData;
// The end time of the frame in microseconds.
media::TimeUnit GetEndTime() const {
return mTime + FramesToTimeUnit(mDuration, mDurationBase);
// Private destructor, to discourage deletion outside of Release():
~EncodedFrame() = default;
} // namespace mozilla
#endif // EncodedFrame_h_