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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 */
#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 {
typedef OmxPromiseLayer::BUFFERLIST BUFFERLIST;
typedef OmxPromiseLayer::BufferData BufferData;
virtual OMX_ERRORTYPE InitOmxToStateLoaded(const TrackInfo* aInfo) = 0;
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) {
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);
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_