1 files changed, 107 insertions, 0 deletions
diff --git a/dom/media/platforms/ffmpeg/FFmpegDataEncoder.h b/dom/media/platforms/ffmpeg/FFmpegDataEncoder.h
new file mode 100644
index 0000000000..de80ed36ca
--- /dev/null
+++ b/dom/media/platforms/ffmpeg/FFmpegDataEncoder.h
@@ -0,0 +1,107 @@
+/* -*- 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_FFMPEGDATAENCODER_H_
+#define DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGDATAENCODER_H_
+
+#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>;
+
+ public:
+  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)
+      override;
+  RefPtr<EncodePromise> Drain() override;
+  RefPtr<ShutdownPromise> Shutdown() override;
+  RefPtr<GenericPromise> SetBitrate(uint32_t aBitRate) override;
+
+ protected:
+  // Methods only called on mTaskQueue.
+  RefPtr<InitPromise> ProcessInit();
+  RefPtr<EncodePromise> ProcessEncode(RefPtr<const MediaData> aSample);
+  RefPtr<ReconfigurationPromise> ProcessReconfigure(
+      const RefPtr<const EncoderConfigurationChangeList>&
+          aConfigurationChanges);
+  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)
+      MOZ_EXCLUDES(sMutex);
+  void CloseCodecContext() MOZ_EXCLUDES(sMutex);
+  bool PrepareFrame();
+  void DestroyFrame();
+#if LIBAVCODEC_VERSION_MAJOR >= 58
+  virtual Result<EncodedData, nsresult> EncodeInputWithModernAPIs(
+      RefPtr<const MediaData> aSample) = 0;
+  Result<EncodedData, nsresult> EncodeWithModernAPIs();
+  virtual Result<EncodedData, nsresult> DrainWithModernAPIs();
+#endif
+  // 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
+
+#endif /* DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGDATAENCODER_H_ */