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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 DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGAUDIOENCODER_H_
#define DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGAUDIOENCODER_H_
#include "FFmpegDataEncoder.h"
#include "FFmpegLibWrapper.h"
#include "PlatformEncoderModule.h"
#include "TimedPacketizer.h"
// This must be the last header included
#include "FFmpegLibs.h"
#include "speex/speex_resampler.h"
namespace mozilla {
template <int V>
class FFmpegAudioEncoder : public MediaDataEncoder {};
template <>
class FFmpegAudioEncoder<LIBAV_VER> : public FFmpegDataEncoder<LIBAV_VER> {
public:
FFmpegAudioEncoder(const FFmpegLibWrapper* aLib, AVCodecID aCodecID,
const RefPtr<TaskQueue>& aTaskQueue,
const EncoderConfig& aConfig);
nsCString GetDescriptionName() const override;
protected:
// Methods only called on mTaskQueue.
virtual nsresult InitSpecific() override;
#if LIBAVCODEC_VERSION_MAJOR >= 58
Result<EncodedData, nsresult> EncodeOnePacket(Span<float> aSamples,
media::TimeUnit aPts);
Result<EncodedData, nsresult> EncodeInputWithModernAPIs(
RefPtr<const MediaData> aSample) override;
Result<MediaDataEncoder::EncodedData, nsresult> DrainWithModernAPIs()
override;
#endif
virtual RefPtr<MediaRawData> ToMediaRawData(AVPacket* aPacket) override;
Result<already_AddRefed<MediaByteBuffer>, nsresult> GetExtraData(
AVPacket* aPacket) override;
// Most audio codecs (except PCM) require a very specific frame size.
Maybe<TimedPacketizer<float, float>> mPacketizer;
// A temporary buffer kept around for shuffling audio frames, resampling,
// packetization, etc.
nsTArray<float> mTempBuffer;
// The pts of the first packet this encoder has seen, to be able to properly
// mark encoder delay as such.
media::TimeUnit mFirstPacketPts{media::TimeUnit::Invalid()};
struct ResamplerDestroy {
void operator()(SpeexResamplerState* aResampler);
};
// Rate at which this instance has been configured, which might be different
// from the rate the underlying encoder is running at.
int mInputSampleRate = 0;
UniquePtr<SpeexResamplerState, ResamplerDestroy> mResampler;
uint64_t mPacketsDelivered = 0;
// Threshold under which a packet isn't returned to the encoder user,
// because it is known to be silent and DTX is enabled.
int mDtxThreshold = 0;
};
} // namespace mozilla
#endif // DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGAUDIOENCODER_H_
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