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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 */
#include "FFmpegLibWrapper.h"
#include "PlatformEncoderModule.h"
#include "SimpleMap.h"
#include "mozilla/ThreadSafety.h"
// This must be the last header included
#include "FFmpegLibs.h"
namespace mozilla {
template <int V>
AVCodecID GetFFmpegEncoderCodecId(CodecType aCodec);
template <>
AVCodecID GetFFmpegEncoderCodecId<LIBAV_VER>(CodecType aCodec);
template <int V>
class FFmpegDataEncoder : public MediaDataEncoder {};
template <>
class FFmpegDataEncoder<LIBAV_VER> : public MediaDataEncoder {
using DurationMap = SimpleMap<int64_t, int64_t, ThreadSafePolicy>;
static AVCodec* FindEncoderWithPreference(const FFmpegLibWrapper* aLib,
AVCodecID aCodecId);
FFmpegDataEncoder(const FFmpegLibWrapper* aLib, AVCodecID aCodecID,
const RefPtr<TaskQueue>& aTaskQueue,
const EncoderConfig& aConfig);
/* MediaDataEncoder Methods */
// All methods run on the task queue, except for GetDescriptionName.
RefPtr<InitPromise> Init() override;
RefPtr<EncodePromise> Encode(const MediaData* aSample) override;
RefPtr<ReconfigurationPromise> Reconfigure(
const RefPtr<const EncoderConfigurationChangeList>& aConfigurationChanges)
RefPtr<EncodePromise> Drain() override;
RefPtr<ShutdownPromise> Shutdown() override;
RefPtr<GenericPromise> SetBitrate(uint32_t aBitRate) override;
// Methods only called on mTaskQueue.
RefPtr<InitPromise> ProcessInit();
RefPtr<EncodePromise> ProcessEncode(RefPtr<const MediaData> aSample);
RefPtr<ReconfigurationPromise> ProcessReconfigure(
const RefPtr<const EncoderConfigurationChangeList>&
RefPtr<EncodePromise> ProcessDrain();
RefPtr<ShutdownPromise> ProcessShutdown();
// Initialize the audio or video-specific members of an encoder instance.
virtual nsresult InitSpecific() = 0;
// nullptr in case of failure. This is to be called by the
// audio/video-specific InitInternal methods in the sub-class, and initializes
// the common members.
AVCodec* InitCommon();
MediaResult FinishInitCommon(AVCodec* aCodec);
void ShutdownInternal();
int OpenCodecContext(const AVCodec* aCodec, AVDictionary** aOptions)
void CloseCodecContext() MOZ_EXCLUDES(sMutex);
bool PrepareFrame();
void DestroyFrame();
virtual Result<EncodedData, nsresult> EncodeInputWithModernAPIs(
RefPtr<const MediaData> aSample) = 0;
Result<EncodedData, nsresult> EncodeWithModernAPIs();
virtual Result<EncodedData, nsresult> DrainWithModernAPIs();
// Convert an AVPacket to a MediaRawData. This can return nullptr if a packet
// has been processed by the encoder, but is not to be returned to the caller,
// because DTX is enabled.
virtual RefPtr<MediaRawData> ToMediaRawData(AVPacket* aPacket) = 0;
RefPtr<MediaRawData> ToMediaRawDataCommon(AVPacket* aPacket);
virtual Result<already_AddRefed<MediaByteBuffer>, nsresult> GetExtraData(
AVPacket* aPacket) = 0;
void ForceEnablingFFmpegDebugLogs();
// This refers to a static FFmpegLibWrapper, so raw pointer is adequate.
const FFmpegLibWrapper* mLib;
const AVCodecID mCodecID;
const RefPtr<TaskQueue> mTaskQueue;
// set in constructor, modified when parameters change
EncoderConfig mConfig;
// mTaskQueue only.
nsCString mCodecName;
AVCodecContext* mCodecContext;
AVFrame* mFrame;
DurationMap mDurationMap;
// Provide critical-section for open/close mCodecContext.
static StaticMutex sMutex;
const bool mVideoCodec;
} // namespace mozilla