1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/omx/RtspOmxReader.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,81 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.8 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +#if !defined(RtspOmxReader_h_)
1.10 +#define RtspOmxReader_h_
1.11 +
1.12 +#include "MediaResource.h"
1.13 +#include "MediaDecoderReader.h"
1.14 +#include "MediaOmxReader.h"
1.15 +
1.16 +namespace mozilla {
1.17 +
1.18 +namespace dom {
1.19 + class TimeRanges;
1.20 +}
1.21 +
1.22 +class AbstractMediaDecoder;
1.23 +class RtspMediaResource;
1.24 +
1.25 +/* RtspOmxReader is a subclass of MediaOmxReader.
1.26 + * The major reason that RtspOmxReader inherit from MediaOmxReader is the
1.27 + * same video/audio decoding logic we can reuse.
1.28 + */
1.29 +class RtspOmxReader : public MediaOmxReader
1.30 +{
1.31 +protected:
1.32 + // Provide a Rtsp extractor.
1.33 + nsresult InitOmxDecoder() MOZ_FINAL MOZ_OVERRIDE;
1.34 +
1.35 +public:
1.36 + RtspOmxReader(AbstractMediaDecoder* aDecoder)
1.37 + : MediaOmxReader(aDecoder) {
1.38 + MOZ_COUNT_CTOR(RtspOmxReader);
1.39 + NS_ASSERTION(mDecoder, "RtspOmxReader mDecoder is null.");
1.40 + NS_ASSERTION(mDecoder->GetResource(),
1.41 + "RtspOmxReader mDecoder->GetResource() is null.");
1.42 + mRtspResource = mDecoder->GetResource()->GetRtspPointer();
1.43 + MOZ_ASSERT(mRtspResource);
1.44 + }
1.45 +
1.46 + virtual ~RtspOmxReader() MOZ_OVERRIDE {
1.47 + MOZ_COUNT_DTOR(RtspOmxReader);
1.48 + }
1.49 +
1.50 + virtual nsresult ReadMetadata(MediaInfo* aInfo,
1.51 + MetadataTags** aTags) MOZ_OVERRIDE;
1.52 +
1.53 + // Implement a time-based seek instead of byte-based..
1.54 + virtual nsresult Seek(int64_t aTime, int64_t aStartTime, int64_t aEndTime,
1.55 + int64_t aCurrentTime) MOZ_FINAL MOZ_OVERRIDE;
1.56 +
1.57 + // Override GetBuffered() to do nothing for below reasons:
1.58 + // 1. Because the Rtsp stream is a/v separated. The buffered data in a/v
1.59 + // tracks are not consistent with time stamp.
1.60 + // For example: audio buffer: 1~2s, video buffer: 1.5~2.5s
1.61 + // 2. Since the Rtsp is a realtime streaming, the buffer we made for
1.62 + // RtspMediaResource is quite small. The small buffer implies the time ranges
1.63 + // we returned are not useful for the MediaDecodeStateMachine. Unlike the
1.64 + // ChannelMediaResource, it has a "cache" that can store the whole streaming
1.65 + // data so the |GetBuffered| function can retrieve useful time ranges.
1.66 + virtual nsresult GetBuffered(mozilla::dom::TimeRanges* aBuffered,
1.67 + int64_t aStartTime) MOZ_FINAL MOZ_OVERRIDE {
1.68 + return NS_OK;
1.69 + }
1.70 +
1.71 + virtual void SetIdle() MOZ_OVERRIDE;
1.72 + virtual void SetActive() MOZ_OVERRIDE;
1.73 +
1.74 +private:
1.75 + // A pointer to RtspMediaResource for calling the Rtsp specific function.
1.76 + // The lifetime of mRtspResource is controlled by MediaDecoder. MediaDecoder
1.77 + // holds the MediaDecoderStateMachine and RtspMediaResource.
1.78 + // And MediaDecoderStateMachine holds this RtspOmxReader.
1.79 + RtspMediaResource* mRtspResource;
1.80 +};
1.81 +
1.82 +} // namespace mozilla
1.83 +
1.84 +#endif
