1 files changed, 103 insertions, 0 deletions
diff --git a/dom/media/platforms/omx/OmxPlatformLayer.h b/dom/media/platforms/omx/OmxPlatformLayer.h
new file mode 100644
index 0000000000..53f3dccbca
--- /dev/null
+++ b/dom/media/platforms/omx/OmxPlatformLayer.h
@@ -0,0 +1,103 @@
+/* -*- 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/. */
+
+#if !defined(OmxPlatformLayer_h_)
+#  define OmxPlatformLayer_h_
+
+#  include "OMX_Core.h"
+#  include "OMX_Types.h"
+#  include "OMX_Video.h"
+
+#  include "nsStringFwd.h"
+#  include "OmxPromiseLayer.h"
+
+namespace mozilla {
+
+class TaskQueue;
+class TrackInfo;
+
+/*
+ * This class the the abstract layer of the platform OpenMax IL implementation.
+ *
+ * For some platform like andoird, it exposures its OpenMax IL via IOMX which
+ * is definitions are different comparing to standard.
+ * For other platforms like Raspberry Pi, it will be easy to implement this
+ * layer with the standard OpenMax IL api.
+ */
+class OmxPlatformLayer {
+ public:
+  typedef OmxPromiseLayer::BUFFERLIST BUFFERLIST;
+  typedef OmxPromiseLayer::BufferData BufferData;
+
+  virtual OMX_ERRORTYPE InitOmxToStateLoaded(const TrackInfo* aInfo) = 0;
+
+  OMX_ERRORTYPE Config();
+
+  virtual OMX_ERRORTYPE EmptyThisBuffer(BufferData* aData) = 0;
+
+  virtual OMX_ERRORTYPE FillThisBuffer(BufferData* aData) = 0;
+
+  virtual OMX_ERRORTYPE SendCommand(OMX_COMMANDTYPE aCmd, OMX_U32 aParam1,
+                                    OMX_PTR aCmdData) = 0;
+
+  // Buffer could be platform dependent. Therefore, derived class needs to
+  // implement its owned buffer allocate/release API according to its platform
+  // type.
+  virtual nsresult AllocateOmxBuffer(OMX_DIRTYPE aType,
+                                     BUFFERLIST* aBufferList) = 0;
+
+  virtual nsresult ReleaseOmxBuffer(OMX_DIRTYPE aType,
+                                    BUFFERLIST* aBufferList) = 0;
+
+  virtual OMX_ERRORTYPE GetState(OMX_STATETYPE* aType) = 0;
+
+  virtual OMX_ERRORTYPE GetParameter(OMX_INDEXTYPE aParamIndex,
+                                     OMX_PTR aComponentParameterStructure,
+                                     OMX_U32 aComponentParameterSize) = 0;
+
+  virtual OMX_ERRORTYPE SetParameter(OMX_INDEXTYPE nIndex,
+                                     OMX_PTR aComponentParameterStructure,
+                                     OMX_U32 aComponentParameterSize) = 0;
+
+  virtual nsresult Shutdown() = 0;
+
+  virtual ~OmxPlatformLayer() = default;
+
+  // For decoders, input port index is start port number and output port is
+  // next. See OpenMAX IL spec v1.1.2 section 8.6.1 & 8.8.1.
+  OMX_U32 InputPortIndex() { return mStartPortNumber; }
+
+  OMX_U32 OutputPortIndex() { return mStartPortNumber + 1; }
+
+  void GetPortIndices(nsTArray<uint32_t>& aPortIndex) {
+    aPortIndex.AppendElement(InputPortIndex());
+    aPortIndex.AppendElement(OutputPortIndex());
+  }
+
+  virtual OMX_VIDEO_CODINGTYPE CompressionFormat();
+
+  // Check if the platform implementation supports given MIME type.
+  static bool SupportsMimeType(const nsACString& aMimeType);
+
+  // Hide the details of creating implementation objects for different
+  // platforms.
+  static OmxPlatformLayer* Create(OmxDataDecoder* aDataDecoder,
+                                  OmxPromiseLayer* aPromiseLayer,
+                                  TaskQueue* aTaskQueue,
+                                  layers::ImageContainer* aImageContainer);
+
+ protected:
+  OmxPlatformLayer() : mInfo(nullptr), mStartPortNumber(0) {}
+
+  // The pointee is held by |OmxDataDecoder::mTrackInfo| and will outlive this
+  // pointer.
+  const TrackInfo* mInfo;
+  OMX_U32 mStartPortNumber;
+};
+
+}  // namespace mozilla
+
+#endif  // OmxPlatformLayer_h_