nsresult
ChannelMediaResource::CacheClientSeek(int64_t aOffset, bool aResume)
{
NS_ASSERTION(NS_IsMainThread(), "Don't call on non-main thread");
CMLOG("CacheClientSeek requested for aOffset [%lld] for decoder [%p]",
aOffset, mDecoder);
CloseChannel();
if (aResume) {
NS_ASSERTION(mSuspendCount > 0, "Too many resumes!");
// No need to mess with the channel, since we're making a new one
--mSuspendCount;
}
mOffset = aOffset;
if (mSuspendCount > 0) {
// Close the existing channel to force the channel to be recreated at
// the correct offset upon resume.
if (mChannel) {
mIgnoreClose = true;
CloseChannel();
}
return NS_OK;
}
nsresult rv = RecreateChannel();
if (NS_FAILED(rv))
return rv;
return OpenChannel(nullptr);
}
void ChannelMediaResource::Suspend(bool aCloseImmediately)
{
NS_ASSERTION(NS_IsMainThread(), "Don't call on non-main thread");
MediaDecoderOwner* owner = mDecoder->GetMediaOwner();
if (!owner) {
// Shutting down; do nothing.
return;
}
dom::HTMLMediaElement* element = owner->GetMediaElement();
if (!element) {
// Shutting down; do nothing.
return;
}
if (mChannel) {
if (aCloseImmediately && mCacheStream.IsTransportSeekable()) {
// Kill off our channel right now, but don't tell anyone about it.
mIgnoreClose = true;
CloseChannel();
element->DownloadSuspended();
} else if (mSuspendCount == 0) {
{
MutexAutoLock lock(mLock);
mChannelStatistics->Stop();
}
PossiblySuspend();
element->DownloadSuspended();
}
}
++mSuspendCount;
}
nsresult ChannelMediaResource::Close()
{
NS_ASSERTION(NS_IsMainThread(), "Only call on main thread");
mCacheStream.Close();
CloseChannel();
return NS_OK;
}
void NetManager::ProcPendingClose()
{
std::deque<int32> vToClose;
{
AUTOLOCK(m_closingQueueLock);
while (!m_closingQueue.empty())
{
int32 nChannelID = m_closingQueue.front();
m_closingQueue.pop_front();
vToClose.push_back(nChannelID);
}
}
for (auto itr = vToClose.begin(); itr != vToClose.end(); ++itr)
{
CloseChannel(*itr);
}
}
//析构函数
CChannelService::~CChannelService()
{
CloseChannel(true,false);
return;
}
//IPC 消息
LRESULT CChannelService::OnIPCMessage(WPARAM wParam, LPARAM lParam)
{
//提取数据
tagDataHead DataHead;
tagIPCPacket IPCPacket;
bool bSuccess=m_DataStorage.GetData(DataHead,&IPCPacket,sizeof(IPCPacket));
//效验数据
ASSERT(bSuccess==true);
ASSERT(DataHead.wDataSize>=IPCPacketSize(IPCPacket));
ASSERT(DataHead.wDataSize==IPCPacket.Head.wDataSize+IPCPacketSize(IPCPacket));
if (DataHead.wDataSize<IPCPacketSize(IPCPacket)) return 0;
if (DataHead.wDataSize!=IPCPacket.Head.wDataSize+IPCPacketSize(IPCPacket)) return 0;
//处理数据
try
{
if (IPCPacket.Head.wMainCmdID==IPC_MIAN_IPC_KERNEL)
{
//内核消息
switch (IPCPacket.Head.wSubCmdID)
{
case IPC_SUB_IPC_CLIENT_CONNECT: //连接消息
{
//处理通知
if (m_pIChannelEventSink!=NULL) m_pIChannelEventSink->OnChannelConnect(IPCPacket.hWndSend);
//发送通知
CIPCSendCopyData SendCopyData;
SendCopyData.SetClientHwnd(m_hWnd);
SendCopyData.SetServerHwnd(IPCPacket.hWndSend);
SendCopyData.SendData(IPC_MIAN_IPC_KERNEL,IPC_SUB_IPC_SERVER_ACCEPT);
break;
}
case IPC_SUB_IPC_SERVER_ACCEPT: //应答消息
{
//处理通知
if (m_pIChannelEventSink!=NULL) m_pIChannelEventSink->OnChannelAccept(IPCPacket.hWndSend);
break;
}
case IPC_SUB_IPC_CLIENT_CLOSE: //关闭消息
{
//关闭连接
CloseChannel(false,true);
break;
}
default: ASSERT(0);
}
}
else //外围消息
{
if (m_pIChannelMessageSink!=NULL)
{
WORD wDataSize=IPCPacket.Head.wDataSize;
m_pIChannelMessageSink->OnChannelMessage(&IPCPacket.Head,IPCPacket.cbBuffer,wDataSize,IPCPacket.hWndSend);
}
}
}
catch (...) { }
return 0;
}
void ChannelsManager::CloseAllChannels ()
{
Q_FOREACH (auto ich, ChannelHandlers_.values ())
ich->CloseChannel ();
}
nsresult
ChannelMediaResource::OnStartRequest(nsIRequest* aRequest)
{
NS_ASSERTION(mChannel.get() == aRequest, "Wrong channel!");
MediaDecoderOwner* owner = mDecoder->GetMediaOwner();
NS_ENSURE_TRUE(owner, NS_ERROR_FAILURE);
dom::HTMLMediaElement* element = owner->GetMediaElement();
NS_ENSURE_TRUE(element, NS_ERROR_FAILURE);
nsresult status;
nsresult rv = aRequest->GetStatus(&status);
NS_ENSURE_SUCCESS(rv, rv);
if (element->ShouldCheckAllowOrigin()) {
// If the request was cancelled by nsCORSListenerProxy due to failing
// the CORS security check, send an error through to the media element.
if (status == NS_ERROR_DOM_BAD_URI) {
mDecoder->NetworkError();
return NS_ERROR_DOM_BAD_URI;
}
}
nsCOMPtr<nsIHttpChannel> hc = do_QueryInterface(aRequest);
bool seekable = false;
if (hc) {
uint32_t responseStatus = 0;
hc->GetResponseStatus(&responseStatus);
bool succeeded = false;
hc->GetRequestSucceeded(&succeeded);
if (!succeeded && NS_SUCCEEDED(status)) {
// HTTP-level error (e.g. 4xx); treat this as a fatal network-level error.
// We might get this on a seek.
// (Note that lower-level errors indicated by NS_FAILED(status) are
// handled in OnStopRequest.)
// A 416 error should treated as EOF here... it's possible
// that we don't get Content-Length, we read N bytes, then we
// suspend and resume, the resume reopens the channel and we seek to
// offset N, but there are no more bytes, so we get a 416
// "Requested Range Not Satisfiable".
if (responseStatus == HTTP_REQUESTED_RANGE_NOT_SATISFIABLE_CODE) {
// OnStopRequest will not be fired, so we need to do some of its
// work here.
mCacheStream.NotifyDataEnded(status);
} else {
mDecoder->NetworkError();
}
// This disconnects our listener so we don't get any more data. We
// certainly don't want an error page to end up in our cache!
CloseChannel();
return NS_OK;
}
nsAutoCString ranges;
hc->GetResponseHeader(NS_LITERAL_CSTRING("Accept-Ranges"),
ranges);
bool acceptsRanges = ranges.EqualsLiteral("bytes");
// True if this channel will not return an unbounded amount of data
bool dataIsBounded = false;
int64_t contentLength = -1;
hc->GetContentLength(&contentLength);
if (contentLength >= 0 && responseStatus == HTTP_OK_CODE) {
// "OK" status means Content-Length is for the whole resource.
// Since that's bounded, we know we have a finite-length resource.
dataIsBounded = true;
}
if (mOffset == 0) {
// Look for duration headers from known Ogg content systems.
// In the case of multiple options for obtaining the duration
// the order of precedence is:
// 1) The Media resource metadata if possible (done by the decoder itself).
// 2) Content-Duration message header.
// 3) X-AMZ-Meta-Content-Duration.
// 4) X-Content-Duration.
// 5) Perform a seek in the decoder to find the value.
nsAutoCString durationText;
nsresult ec = NS_OK;
rv = hc->GetResponseHeader(NS_LITERAL_CSTRING("Content-Duration"), durationText);
if (NS_FAILED(rv)) {
rv = hc->GetResponseHeader(NS_LITERAL_CSTRING("X-AMZ-Meta-Content-Duration"), durationText);
}
if (NS_FAILED(rv)) {
rv = hc->GetResponseHeader(NS_LITERAL_CSTRING("X-Content-Duration"), durationText);
}
// If there is a Content-Duration header with a valid value, record
// the duration.
if (NS_SUCCEEDED(rv)) {
double duration = durationText.ToDouble(&ec);
if (ec == NS_OK && duration >= 0) {
mDecoder->SetDuration(duration);
// We know the resource must be bounded.
dataIsBounded = true;
}
}
}
// Assume Range requests have a bounded upper limit unless the
// Content-Range header tells us otherwise.
bool boundedSeekLimit = true;
// Check response code for byte-range requests (seeking, chunk requests).
if (!mByteRange.IsNull() && (responseStatus == HTTP_PARTIAL_RESPONSE_CODE)) {
// Parse Content-Range header.
int64_t rangeStart = 0;
int64_t rangeEnd = 0;
int64_t rangeTotal = 0;
rv = ParseContentRangeHeader(hc, rangeStart, rangeEnd, rangeTotal);
if (NS_FAILED(rv)) {
// Content-Range header text should be parse-able.
CMLOG("Error processing \'Content-Range' for "
"HTTP_PARTIAL_RESPONSE_CODE: rv[%x] channel[%p] decoder[%p]",
rv, hc.get(), mDecoder);
mDecoder->NetworkError();
CloseChannel();
return NS_OK;
}
// Give some warnings if the ranges are unexpected.
// XXX These could be error conditions.
NS_WARN_IF_FALSE(mByteRange.mStart == rangeStart,
"response range start does not match request");
NS_WARN_IF_FALSE(mOffset == rangeStart,
"response range start does not match current offset");
NS_WARN_IF_FALSE(mByteRange.mEnd == rangeEnd,
"response range end does not match request");
// Notify media cache about the length and start offset of data received.
// Note: If aRangeTotal == -1, then the total bytes is unknown at this stage.
// For now, tell the decoder that the stream is infinite.
if (rangeTotal == -1) {
boundedSeekLimit = false;
} else {
mCacheStream.NotifyDataLength(rangeTotal);
}
mCacheStream.NotifyDataStarted(rangeStart);
mOffset = rangeStart;
// We received 'Content-Range', so the server accepts range requests.
acceptsRanges = true;
} else if (((mOffset > 0) || !mByteRange.IsNull())
&& (responseStatus == HTTP_OK_CODE)) {
// If we get an OK response but we were seeking, or requesting a byte
// range, then we have to assume that seeking doesn't work. We also need
// to tell the cache that it's getting data for the start of the stream.
mCacheStream.NotifyDataStarted(0);
mOffset = 0;
// The server claimed it supported range requests. It lied.
acceptsRanges = false;
} else if (mOffset == 0 &&
(responseStatus == HTTP_OK_CODE ||
responseStatus == HTTP_PARTIAL_RESPONSE_CODE)) {
if (contentLength >= 0) {
mCacheStream.NotifyDataLength(contentLength);
}
}
// XXX we probably should examine the Content-Range header in case
// the server gave us a range which is not quite what we asked for
// If we get an HTTP_OK_CODE response to our byte range request,
// and the server isn't sending Accept-Ranges:bytes then we don't
// support seeking.
seekable =
responseStatus == HTTP_PARTIAL_RESPONSE_CODE || acceptsRanges;
if (seekable && boundedSeekLimit) {
// If range requests are supported, and we did not see an unbounded
// upper range limit, we assume the resource is bounded.
dataIsBounded = true;
}
mDecoder->SetInfinite(!dataIsBounded);
}
mDecoder->SetTransportSeekable(seekable);
mCacheStream.SetTransportSeekable(seekable);
{
MutexAutoLock lock(mLock);
mIsTransportSeekable = seekable;
mChannelStatistics->Start();
}
mReopenOnError = false;
// If we are seeking to get metadata, because we are playing an OGG file,
// ignore if the channel gets closed without us suspending it explicitly. We
// don't want to tell the element that the download has finished whereas we
// just happended to have reached the end of the media while seeking.
mIgnoreClose = mSeekingForMetadata;
if (mSuspendCount > 0) {
// Re-suspend the channel if it needs to be suspended
// No need to call PossiblySuspend here since the channel is
// definitely in the right state for us in OnStartRequest.
mChannel->Suspend();
mIgnoreResume = false;
}
// Fires an initial progress event and sets up the stall counter so stall events
// fire if no download occurs within the required time frame.
mDecoder->Progress(false);
return NS_OK;
}
void ChannelHandler::Leave (const QString& msg)
{
CM_->LeaveChannel (ChannelOptions_.ChannelName_.toLower (), msg);
CloseChannel ();
}
void stopRadio(){
DestroyAnalyzer(CHANNEL_RX);
SetChannelState(CHANNEL_RX,0,0);
CloseChannel(CHANNEL_RX);
}
