gecko-dev/dom/media/omx/RtspOmxReader.cpp

113 строки
3.5 KiB
C++

/* -*- 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/. */
#include "RtspOmxReader.h"
#include "AbstractMediaDecoder.h"
#include "MediaDecoderStateMachine.h"
#include "OmxDecoder.h"
#include "RtspExtractor.h"
#include "RtspMediaResource.h"
#include "RtspOmxDecoder.h"
using namespace android;
namespace mozilla {
nsresult RtspOmxReader::InitOmxDecoder()
{
if (!mOmxDecoder.get()) {
NS_ASSERTION(mDecoder, "RtspOmxReader mDecoder is null.");
NS_ASSERTION(mDecoder->GetResource(),
"RtspOmxReader mDecoder->GetResource() is null.");
mExtractor = new RtspExtractor(mRtspResource);
mOmxDecoder = new OmxDecoder(mDecoder, OwnerThread());
if (!mOmxDecoder->Init(mExtractor)) {
return NS_ERROR_FAILURE;
}
}
return NS_OK;
}
RefPtr<MediaDecoderReader::SeekPromise>
RtspOmxReader::Seek(SeekTarget aTarget, int64_t aEndTime)
{
// The seek function of Rtsp is time-based, we call the SeekTime function in
// RtspMediaResource. The SeekTime function finally send a seek command to
// Rtsp stream server through network and also clear the buffer data in
// RtspMediaResource.
if (mRtspResource) {
mRtspResource->SeekTime(aTarget.GetTime().ToMicroseconds());
mRtspResource->EnablePlayoutDelay();
}
// Call |MediaOmxReader::Seek| to notify the OMX decoder we are performing a
// seek operation. The function will clear the |mVideoQueue| and |mAudioQueue|
// that store the decoded data and also call the |DecodeToTarget| to pass
// the seek time to OMX a/v decoders.
mEnsureActiveFromSeek = true;
return MediaOmxReader::Seek(aTarget, aEndTime);
}
void RtspOmxReader::SetIdle() {
// Call parent class to set OMXCodec idle.
MediaOmxReader::SetIdle();
// Need to pause RTSP streaming OMXCodec decoding.
if (mRtspResource) {
nsIStreamingProtocolController* controller =
mRtspResource->GetMediaStreamController();
if (controller) {
controller->Pause();
}
mRtspResource->SetSuspend(true);
}
}
void RtspOmxReader::EnsureActive() {
// Need to start RTSP streaming OMXCodec decoding.
if (mRtspResource) {
nsIStreamingProtocolController* controller =
mRtspResource->GetMediaStreamController();
// We do not have to call Play if the EnsureActive request is from Seek
// operation because RTSP connection must already be established before
// performing Seek.
if (controller && !mEnsureActiveFromSeek) {
controller->Play();
}
mEnsureActiveFromSeek = false;
mRtspResource->SetSuspend(false);
}
// Call parent class to set OMXCodec active.
MediaOmxReader::EnsureActive();
}
RefPtr<MediaDecoderReader::MetadataPromise>
RtspOmxReader::AsyncReadMetadata()
{
// Send a PLAY command to the RTSP server before reading metadata.
// Because we might need some decoded samples to ensure we have configuration.
mRtspResource->DisablePlayoutDelay();
RefPtr<MediaDecoderReader::MetadataPromise> p =
MediaOmxReader::AsyncReadMetadata();
// Send a PAUSE to the RTSP server because the underlying media resource is
// not ready.
SetIdle();
return p;
}
void RtspOmxReader::HandleResourceAllocated()
{
MediaOmxReader::HandleResourceAllocated();
mRtspResource->EnablePlayoutDelay();
}
} // namespace mozilla