michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: #if !defined(RtspOmxReader_h_)
michael@0: #define RtspOmxReader_h_
michael@0: 
michael@0: #include "MediaResource.h"
michael@0: #include "MediaDecoderReader.h"
michael@0: #include "MediaOmxReader.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: namespace dom {
michael@0:   class TimeRanges;
michael@0: }
michael@0: 
michael@0: class AbstractMediaDecoder;
michael@0: class RtspMediaResource;
michael@0: 
michael@0: /* RtspOmxReader is a subclass of MediaOmxReader.
michael@0:  * The major reason that RtspOmxReader inherit from MediaOmxReader is the
michael@0:  * same video/audio decoding logic we can reuse.
michael@0:  */
michael@0: class RtspOmxReader : public MediaOmxReader
michael@0: {
michael@0: protected:
michael@0:   // Provide a Rtsp extractor.
michael@0:   nsresult InitOmxDecoder() MOZ_FINAL MOZ_OVERRIDE;
michael@0: 
michael@0: public:
michael@0:   RtspOmxReader(AbstractMediaDecoder* aDecoder)
michael@0:     : MediaOmxReader(aDecoder) {
michael@0:     MOZ_COUNT_CTOR(RtspOmxReader);
michael@0:     NS_ASSERTION(mDecoder, "RtspOmxReader mDecoder is null.");
michael@0:     NS_ASSERTION(mDecoder->GetResource(),
michael@0:                  "RtspOmxReader mDecoder->GetResource() is null.");
michael@0:     mRtspResource = mDecoder->GetResource()->GetRtspPointer();
michael@0:     MOZ_ASSERT(mRtspResource);
michael@0:   }
michael@0: 
michael@0:   virtual ~RtspOmxReader() MOZ_OVERRIDE {
michael@0:     MOZ_COUNT_DTOR(RtspOmxReader);
michael@0:   }
michael@0: 
michael@0:   virtual nsresult ReadMetadata(MediaInfo* aInfo,
michael@0:                                 MetadataTags** aTags) MOZ_OVERRIDE;
michael@0: 
michael@0:   // Implement a time-based seek instead of byte-based..
michael@0:   virtual nsresult Seek(int64_t aTime, int64_t aStartTime, int64_t aEndTime,
michael@0:                         int64_t aCurrentTime) MOZ_FINAL MOZ_OVERRIDE;
michael@0: 
michael@0:   // Override GetBuffered() to do nothing for below reasons:
michael@0:   // 1. Because the Rtsp stream is a/v separated. The buffered data in a/v
michael@0:   // tracks are not consistent with time stamp.
michael@0:   // For example: audio buffer: 1~2s, video buffer: 1.5~2.5s
michael@0:   // 2. Since the Rtsp is a realtime streaming, the buffer we made for
michael@0:   // RtspMediaResource is quite small. The small buffer implies the time ranges
michael@0:   // we returned are not useful for the MediaDecodeStateMachine. Unlike the
michael@0:   // ChannelMediaResource, it has a "cache" that can store the whole streaming
michael@0:   // data so the |GetBuffered| function can retrieve useful time ranges.
michael@0:   virtual nsresult GetBuffered(mozilla::dom::TimeRanges* aBuffered,
michael@0:                                int64_t aStartTime) MOZ_FINAL MOZ_OVERRIDE {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   virtual void SetIdle() MOZ_OVERRIDE;
michael@0:   virtual void SetActive() MOZ_OVERRIDE;
michael@0: 
michael@0: private:
michael@0:   // A pointer to RtspMediaResource for calling the Rtsp specific function.
michael@0:   // The lifetime of mRtspResource is controlled by MediaDecoder. MediaDecoder
michael@0:   // holds the MediaDecoderStateMachine and RtspMediaResource.
michael@0:   // And MediaDecoderStateMachine holds this RtspOmxReader.
michael@0:   RtspMediaResource* mRtspResource;
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif