gecko/dom/media/omx/RtspOmxReader.cpp

103 lines
3.2 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->GetResource(), mDecoder);
if (!mOmxDecoder->Init(mExtractor)) {
return NS_ERROR_FAILURE;
}
}
return NS_OK;
}
void RtspOmxReader::Seek(int64_t aTime, int64_t aStartTime,
int64_t aEndTime, int64_t aCurrentTime)
{
// 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(aTime);
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.
MediaOmxReader::Seek(aTime, aStartTime, aEndTime, aCurrentTime);
}
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();
if (controller) {
controller->Play();
}
mRtspResource->SetSuspend(false);
}
// Call parent class to set OMXCodec active.
MediaOmxReader::EnsureActive();
}
nsresult RtspOmxReader::ReadMetadata(MediaInfo *aInfo, MetadataTags **aTags)
{
// 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();
EnsureActive();
nsresult rv = MediaOmxReader::ReadMetadata(aInfo, aTags);
if (rv == NS_OK && !IsWaitingMediaResources()) {
mRtspResource->EnablePlayoutDelay();
} else if (IsWaitingMediaResources()) {
// Send a PAUSE to the RTSP server because the underlying media resource is
// not ready.
SetIdle();
}
return rv;
}
} // namespace mozilla