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Darwin-Streaming-Server/APIModules/QTSSFileModule/QTSSFileModule.cpp
Darren VanBuren 849723c9cf Add even more of the source 
This should be about everything needed to build so far?
2017-03-07 17:14:16 -08:00

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/*
*
* @APPLE_LICENSE_HEADER_START@
*
* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*
*/
/*
File: QTSSFileModule.cpp
Contains: Implementation of module described in QTSSFileModule.h.
*/
#include <string.h>
#include "QTSSFileModule.h"
#include "QTRTPFile.h"
#include "QTFile.h"
#include "OSMemory.h"
#include "OSArrayObjectDeleter.h"
#include "QTSSMemoryDeleter.h"
#include "SDPSourceInfo.h"
#include "StringFormatter.h"
#include "QTSSModuleUtils.h"
#include "QTSS3GPPModuleUtils.h"
#include "ResizeableStringFormatter.h"
#include "StringParser.h"
#include "SDPUtils.h"
#include <errno.h>
#include "QTSS.h"
class FileSession
{
public:
FileSession() : fAdjustedPlayTime(0), fNextPacketLen(0), fLastQualityCheck(0),
fAllowNegativeTTs(false), fSpeed(1),
fStartTime(-1), fStopTime(-1), fStopTrackID(0), fStopPN(0),
fLastRTPTime(0), fLastPauseTime(0),fTotalPauseTime(0), fPaused(true), fAdjustPauseTime(true)
{
fPacketStruct.packetData = NULL; fPacketStruct.packetTransmitTime = -1; fPacketStruct.suggestedWakeupTime=-1;
}
~FileSession() {}
QTRTPFile fFile;
SInt64 fAdjustedPlayTime;
QTSS_PacketStruct fPacketStruct;
int fNextPacketLen;
SInt64 fLastQualityCheck;
SDPSourceInfo fSDPSource;
Bool16 fAllowNegativeTTs;
Float32 fSpeed;
Float64 fStartTime;
Float64 fStopTime;
UInt32 fStopTrackID;
UInt64 fStopPN;
UInt32 fLastRTPTime;
UInt64 fLastPauseTime;
SInt64 fTotalPauseTime;
Bool16 fPaused;
Bool16 fAdjustPauseTime;
};
// ref to the prefs dictionary object
static QTSS_ModulePrefsObject sPrefs;
static QTSS_PrefsObject sServerPrefs;
static QTSS_Object sServer;
static StrPtrLen sSDPSuffix(".sdp");
static StrPtrLen sVersionHeader("v=0");
static StrPtrLen sSessionNameHeader("s=");
static StrPtrLen sPermanentTimeHeader("t=0 0");
static StrPtrLen sConnectionHeader("c=IN IP4 0.0.0.0");
static StrPtrLen sStaticControlHeader("a=control:*");
static StrPtrLen sEmailHeader;
static StrPtrLen sURLHeader;
static StrPtrLen sEOL("\r\n");
static StrPtrLen sSDPNotValidMessage("Movie SDP is not valid.");
const SInt16 sNumSDPVectors = 22;
// ATTRIBUTES IDs
static QTSS_AttributeID sFileSessionAttr = qtssIllegalAttrID;
static QTSS_AttributeID sSeekToNonexistentTimeErr = qtssIllegalAttrID;
static QTSS_AttributeID sNoSDPFileFoundErr = qtssIllegalAttrID;
static QTSS_AttributeID sBadQTFileErr = qtssIllegalAttrID;
static QTSS_AttributeID sFileIsNotHintedErr = qtssIllegalAttrID;
static QTSS_AttributeID sExpectedDigitFilenameErr = qtssIllegalAttrID;
static QTSS_AttributeID sTrackDoesntExistErr = qtssIllegalAttrID;
static QTSS_AttributeID sFileSessionPlayCountAttrID = qtssIllegalAttrID;
static QTSS_AttributeID sFileSessionBufferDelayAttrID = qtssIllegalAttrID;
static QTSS_AttributeID sRTPStreamLastSentPacketSeqNumAttrID = qtssIllegalAttrID;
static QTSS_AttributeID sRTPStreamLastPacketSeqNumAttrID = qtssIllegalAttrID;
// OTHER DATA
static UInt32 sFlowControlProbeInterval = 10;
static UInt32 sDefaultFlowControlProbeInterval= 10;
static Float32 sMaxAllowedSpeed = 4;
static Float32 sDefaultMaxAllowedSpeed = 4;
// File Caching Prefs
static Bool16 sEnableSharedBuffers = false;
static Bool16 sEnablePrivateBuffers = false;
static UInt32 sSharedBufferUnitKSize = 0;
static UInt32 sSharedBufferInc = 0;
static UInt32 sSharedBufferUnitSize = 0;
static UInt32 sSharedBufferMaxUnits = 0;
static UInt32 sPrivateBufferUnitKSize = 0;
static UInt32 sPrivateBufferUnitSize = 0;
static UInt32 sPrivateBufferMaxUnits = 0;
static Float32 sAddClientBufferDelaySecs = 0;
static Bool16 sRecordMovieFileSDP = false;
static Bool16 sEnableMovieFileSDP = false;
static Bool16 sPlayerCompatibility = true;
static UInt32 sAdjustMediaBandwidthPercent = 50;
static SInt64 sAdjustRTPStartTimeMilli = 500;
static Bool16 sAllowInvalidHintRefs = false;
// Server preference we respect
static Bool16 sDisableThinning = false;
static UInt16 sDefaultStreamingQuality = 0;
static const StrPtrLen kCacheControlHeader("must-revalidate");
static const QTSS_RTSPStatusCode kNotModifiedStatus = qtssRedirectNotModified;
const Bool16 kAddPauseTimeToRTPTime = true;
const Bool16 kDontAddPauseTimeToRTPTime = false;
// FUNCTIONS
static QTSS_Error QTSSFileModuleDispatch(QTSS_Role inRole, QTSS_RoleParamPtr inParamBlock);
static QTSS_Error Register(QTSS_Register_Params* inParams);
static QTSS_Error Initialize(QTSS_Initialize_Params* inParamBlock);
static QTSS_Error RereadPrefs();
static QTSS_Error ProcessRTSPRequest(QTSS_StandardRTSP_Params* inParamBlock);
static QTSS_Error DoDescribe(QTSS_StandardRTSP_Params* inParamBlock);
static QTSS_Error CreateQTRTPFile(QTSS_StandardRTSP_Params* inParamBlock, char* inPath, FileSession** outFile);
static QTSS_Error DoSetup(QTSS_StandardRTSP_Params* inParamBlock);
static QTSS_Error DoPlay(QTSS_StandardRTSP_Params* inParamBlock);
static QTSS_Error SendPackets(QTSS_RTPSendPackets_Params* inParams);
static QTSS_Error DestroySession(QTSS_ClientSessionClosing_Params* inParams);
static void DeleteFileSession(FileSession* inFileSession);
static UInt32 WriteSDPHeader(FILE* sdpFile, iovec *theSDPVec, SInt16 *ioVectorIndex, StrPtrLen *sdpHeader);
static void BuildPrefBasedHeaders();
QTSS_Error QTSSFileModule_Main(void* inPrivateArgs)
{
return _stublibrary_main(inPrivateArgs, QTSSFileModuleDispatch);
}
inline UInt16 GetPacketSequenceNumber(void * packetDataPtr)
{
return ntohs( ((UInt16*)packetDataPtr)[1]);
}
inline UInt16 GetLastPacketSeqNum(QTSS_Object stream)
{
UInt16 lastSeqNum = 0;
UInt32 theLen = sizeof(lastSeqNum);
(void) QTSS_GetValue(stream, sRTPStreamLastPacketSeqNumAttrID, 0, (void*)&lastSeqNum, &theLen);
return lastSeqNum;
}
inline SInt32 GetLastSentSeqNumber(QTSS_Object stream)
{
UInt16 lastSeqNum = 0;
UInt32 theLen = sizeof(lastSeqNum);
QTSS_Error error = QTSS_GetValue(stream, sRTPStreamLastSentPacketSeqNumAttrID, 0, (void*)&lastSeqNum, &theLen);
if (error == QTSS_ValueNotFound) // first packet
{ return -1;
}
return (SInt32)lastSeqNum; // return UInt16 seq num value or -1.
}
inline void SetPacketSequenceNumber(UInt16 newSequenceNumber, void * packetDataPtr)
{
((UInt16*)packetDataPtr)[1] = htons(newSequenceNumber);
}
inline UInt32 GetPacketTimeStamp(void * packetDataPtr)
{
return ntohl( ((UInt32*)packetDataPtr)[1]);
}
inline void SetPacketTimeStamp(UInt32 newTimeStamp, void * packetDataPtr)
{
((UInt32*)packetDataPtr)[1] = htonl(newTimeStamp);
}
inline UInt32 CalculatePauseTimeStamp(UInt32 timescale, SInt64 totalPauseTime, UInt32 currentTimeStamp)
{
SInt64 pauseTime = (SInt64) ( (Float64) timescale * ( ( (Float64) totalPauseTime) / 1000.0));
UInt32 pauseTimeStamp = (UInt32) (pauseTime + currentTimeStamp);
return pauseTimeStamp;
}
UInt32 SetPausetimeTimeStamp(FileSession *fileSessionPtr, QTSS_Object theRTPStream, UInt32 currentTimeStamp)
{
if (false == fileSessionPtr->fAdjustPauseTime || fileSessionPtr->fTotalPauseTime == 0)
return currentTimeStamp;
UInt32 timeScale = 0;
UInt32 theLen = sizeof(timeScale);
(void) QTSS_GetValue(theRTPStream, qtssRTPStrTimescale, 0, (void*)&timeScale, &theLen);
if (theLen != sizeof(timeScale) || timeScale == 0)
return currentTimeStamp;
UInt32 pauseTimeStamp = CalculatePauseTimeStamp( timeScale, fileSessionPtr->fTotalPauseTime, currentTimeStamp);
if (pauseTimeStamp != currentTimeStamp)
SetPacketTimeStamp(pauseTimeStamp, fileSessionPtr->fPacketStruct.packetData);
return pauseTimeStamp;
}
UInt32 WriteSDPHeader(FILE* sdpFile, iovec *theSDPVec, SInt16 *ioVectorIndex, StrPtrLen *sdpHeader)
{
Assert (ioVectorIndex != NULL);
Assert (theSDPVec != NULL);
Assert (sdpHeader != NULL);
Assert (*ioVectorIndex < sNumSDPVectors); // if adding an sdp param you need to increase sNumSDPVectors
SInt16 theIndex = *ioVectorIndex;
*ioVectorIndex += 1;
theSDPVec[theIndex].iov_base = sdpHeader->Ptr;
theSDPVec[theIndex].iov_len = sdpHeader->Len;
if (sdpFile !=NULL)
::fwrite(theSDPVec[theIndex].iov_base,theSDPVec[theIndex].iov_len,sizeof(char),sdpFile);
return theSDPVec[theIndex].iov_len;
}
QTSS_Error QTSSFileModuleDispatch(QTSS_Role inRole, QTSS_RoleParamPtr inParamBlock)
{
switch (inRole)
{
case QTSS_Register_Role:
return Register(&inParamBlock->regParams);
case QTSS_Initialize_Role:
return Initialize(&inParamBlock->initParams);
case QTSS_RereadPrefs_Role:
return RereadPrefs();
case QTSS_RTSPRequest_Role:
return ProcessRTSPRequest(&inParamBlock->rtspRequestParams);
case QTSS_RTPSendPackets_Role:
return SendPackets(&inParamBlock->rtpSendPacketsParams);
case QTSS_ClientSessionClosing_Role:
return DestroySession(&inParamBlock->clientSessionClosingParams);
}
return QTSS_NoErr;
}
QTSS_Error Register(QTSS_Register_Params* inParams)
{
// Register for roles
(void)QTSS_AddRole(QTSS_Initialize_Role);
(void)QTSS_AddRole(QTSS_RTSPRequest_Role);
(void)QTSS_AddRole(QTSS_ClientSessionClosing_Role);
(void)QTSS_AddRole(QTSS_RereadPrefs_Role);
// Add text messages attributes
static char* sSeekToNonexistentTimeName = "QTSSFileModuleSeekToNonExistentTime";
static char* sNoSDPFileFoundName = "QTSSFileModuleNoSDPFileFound";
static char* sBadQTFileName = "QTSSFileModuleBadQTFile";
static char* sFileIsNotHintedName = "QTSSFileModuleFileIsNotHinted";
static char* sExpectedDigitFilenameName = "QTSSFileModuleExpectedDigitFilename";
static char* sTrackDoesntExistName = "QTSSFileModuleTrackDoesntExist";
(void)QTSS_AddStaticAttribute(qtssTextMessagesObjectType, sSeekToNonexistentTimeName, NULL, qtssAttrDataTypeCharArray);
(void)QTSS_IDForAttr(qtssTextMessagesObjectType, sSeekToNonexistentTimeName, &sSeekToNonexistentTimeErr);
(void)QTSS_AddStaticAttribute(qtssTextMessagesObjectType, sNoSDPFileFoundName, NULL, qtssAttrDataTypeCharArray);
(void)QTSS_IDForAttr(qtssTextMessagesObjectType, sNoSDPFileFoundName, &sNoSDPFileFoundErr);
(void)QTSS_AddStaticAttribute(qtssTextMessagesObjectType, sBadQTFileName, NULL, qtssAttrDataTypeCharArray);
(void)QTSS_IDForAttr(qtssTextMessagesObjectType, sBadQTFileName, &sBadQTFileErr);
(void)QTSS_AddStaticAttribute(qtssTextMessagesObjectType, sFileIsNotHintedName, NULL, qtssAttrDataTypeCharArray);
(void)QTSS_IDForAttr(qtssTextMessagesObjectType, sFileIsNotHintedName, &sFileIsNotHintedErr);
(void)QTSS_AddStaticAttribute(qtssTextMessagesObjectType, sExpectedDigitFilenameName, NULL, qtssAttrDataTypeCharArray);
(void)QTSS_IDForAttr(qtssTextMessagesObjectType, sExpectedDigitFilenameName, &sExpectedDigitFilenameErr);
(void)QTSS_AddStaticAttribute(qtssTextMessagesObjectType, sTrackDoesntExistName, NULL, qtssAttrDataTypeCharArray);
(void)QTSS_IDForAttr(qtssTextMessagesObjectType, sTrackDoesntExistName, &sTrackDoesntExistErr);
// Add an RTP session attribute for tracking FileSession objects
static char* sFileSessionName = "QTSSFileModuleSession";
(void)QTSS_AddStaticAttribute(qtssClientSessionObjectType, sFileSessionName, NULL, qtssAttrDataTypeVoidPointer);
(void)QTSS_IDForAttr(qtssClientSessionObjectType, sFileSessionName, &sFileSessionAttr);
static char* sFileSessionPlayCountName = "QTSSFileModulePlayCount";
(void)QTSS_AddStaticAttribute(qtssClientSessionObjectType, sFileSessionPlayCountName, NULL, qtssAttrDataTypeUInt32);
(void)QTSS_IDForAttr(qtssClientSessionObjectType, sFileSessionPlayCountName, &sFileSessionPlayCountAttrID);
static char* sFileSessionBufferDelayName = "QTSSFileModuleSDPBufferDelay";
(void)QTSS_AddStaticAttribute(qtssClientSessionObjectType, sFileSessionBufferDelayName, NULL, qtssAttrDataTypeFloat32);
(void)QTSS_IDForAttr(qtssClientSessionObjectType, sFileSessionBufferDelayName, &sFileSessionBufferDelayAttrID);
static char* sRTPStreamLastSentPacketSeqNumName = "QTSSFileModuleLastSentPacketSeqNum";
(void)QTSS_AddStaticAttribute(qtssRTPStreamObjectType, sRTPStreamLastSentPacketSeqNumName, NULL, qtssAttrDataTypeUInt16);
(void)QTSS_IDForAttr(qtssRTPStreamObjectType, sRTPStreamLastSentPacketSeqNumName, &sRTPStreamLastSentPacketSeqNumAttrID);
static char* sRTPStreamLastPacketSeqNumName = "QTSSFileModuleLastPacketSeqNum";
(void)QTSS_AddStaticAttribute(qtssRTPStreamObjectType, sRTPStreamLastPacketSeqNumName, NULL, qtssAttrDataTypeUInt16);
(void)QTSS_IDForAttr(qtssRTPStreamObjectType, sRTPStreamLastPacketSeqNumName, &sRTPStreamLastPacketSeqNumAttrID);
// Tell the server our name!
static char* sModuleName = "QTSSFileModule";
::strcpy(inParams->outModuleName, sModuleName);
return QTSS_NoErr;
}
QTSS_Error Initialize(QTSS_Initialize_Params* inParams)
{
QTRTPFile::Initialize();
QTSSModuleUtils::Initialize(inParams->inMessages, inParams->inServer, inParams->inErrorLogStream);
QTSS3GPPModuleUtils::Initialize(inParams);
sPrefs = QTSSModuleUtils::GetModulePrefsObject(inParams->inModule);
sServerPrefs = inParams->inPrefs;
sServer = inParams->inServer;
// Read our preferences
RereadPrefs();
// Report to the server that this module handles DESCRIBE, SETUP, PLAY, PAUSE, and TEARDOWN
static QTSS_RTSPMethod sSupportedMethods[] = { qtssDescribeMethod, qtssSetupMethod, qtssTeardownMethod, qtssPlayMethod, qtssPauseMethod };
QTSSModuleUtils::SetupSupportedMethods(inParams->inServer, sSupportedMethods, 5);
return QTSS_NoErr;
}
void BuildPrefBasedHeaders()
{
//build the sdp that looks like: \r\ne=http://streaming.apple.com\r\ne=qts@apple.com.
static StrPtrLen sUHeader("u=");
static StrPtrLen sEHeader("e=");
static StrPtrLen sHTTP("http://");
static StrPtrLen sAdmin("admin@");
// Get the default DNS name of the server
StrPtrLen theDefaultDNS;
(void)QTSS_GetValuePtr(sServer, qtssSvrDefaultDNSName, 0, (void**)&theDefaultDNS.Ptr, &theDefaultDNS.Len);
//-------- URL Header
StrPtrLen sdpURL;
sdpURL.Ptr = QTSSModuleUtils::GetStringAttribute(sPrefs, "sdp_url", "");
sdpURL.Len = ::strlen(sdpURL.Ptr);
UInt32 sdpURLLen = sdpURL.Len;
if (sdpURLLen == 0)
sdpURLLen = theDefaultDNS.Len + sHTTP.Len + 1;
sURLHeader.Delete();
sURLHeader.Len = sdpURLLen + 10;
sURLHeader.Ptr = NEW char[sURLHeader.Len];
StringFormatter urlFormatter(sURLHeader);
urlFormatter.Put(sUHeader);
if (sdpURL.Len == 0)
{
urlFormatter.Put(sHTTP);
urlFormatter.Put(theDefaultDNS);
urlFormatter.PutChar('/');
}
else
urlFormatter.Put(sdpURL);
sURLHeader.Len = (UInt32)urlFormatter.GetCurrentOffset();
//-------- Email Header
StrPtrLen adminEmail;
adminEmail.Ptr = QTSSModuleUtils::GetStringAttribute(sPrefs, "admin_email", "");
adminEmail.Len = ::strlen(adminEmail.Ptr);
UInt32 adminEmailLen = adminEmail.Len;
if (adminEmailLen == 0)
adminEmailLen = theDefaultDNS.Len + sAdmin.Len;
sEmailHeader.Delete();
sEmailHeader.Len = (sEHeader.Len * 2) + adminEmailLen + 10;
sEmailHeader.Ptr = NEW char[sEmailHeader.Len];
StringFormatter sdpFormatter(sEmailHeader);
sdpFormatter.Put(sEHeader);
if (adminEmail.Len == 0)
{
sdpFormatter.Put(sAdmin);
sdpFormatter.Put(theDefaultDNS);
}
else
sdpFormatter.Put(adminEmail);
sEmailHeader.Len = (UInt32)sdpFormatter.GetCurrentOffset();
sdpURL.Delete();
adminEmail.Delete();
}
QTSS_Error RereadPrefs()
{
QTSSModuleUtils::GetAttribute(sPrefs, "flow_control_probe_interval", qtssAttrDataTypeUInt32,
&sFlowControlProbeInterval, &sDefaultFlowControlProbeInterval, sizeof(sFlowControlProbeInterval));
QTSSModuleUtils::GetAttribute(sPrefs, "max_allowed_speed", qtssAttrDataTypeFloat32,
&sMaxAllowedSpeed, &sDefaultMaxAllowedSpeed, sizeof(sMaxAllowedSpeed));
// File Cache prefs
sEnableSharedBuffers = true;
QTSSModuleUtils::GetIOAttribute(sPrefs, "enable_shared_file_buffers", qtssAttrDataTypeBool16, &sEnableSharedBuffers, sizeof(sEnableSharedBuffers));
sEnablePrivateBuffers = false;
QTSSModuleUtils::GetIOAttribute(sPrefs, "enable_private_file_buffers", qtssAttrDataTypeBool16, &sEnablePrivateBuffers, sizeof(sEnablePrivateBuffers));
sSharedBufferInc = 8;
QTSSModuleUtils::GetIOAttribute(sPrefs, "num_shared_buffer_increase_per_session", qtssAttrDataTypeUInt32,&sSharedBufferInc, sizeof(sSharedBufferInc));
sSharedBufferUnitKSize = 256;
QTSSModuleUtils::GetIOAttribute(sPrefs, "shared_buffer_unit_k_size", qtssAttrDataTypeUInt32, &sSharedBufferUnitKSize, sizeof(sSharedBufferUnitKSize));
sPrivateBufferUnitKSize = 256;
QTSSModuleUtils::GetIOAttribute(sPrefs, "private_buffer_unit_k_size", qtssAttrDataTypeUInt32, &sPrivateBufferUnitKSize, sizeof(sPrivateBufferUnitKSize));
sSharedBufferUnitSize = 1;
QTSSModuleUtils::GetIOAttribute(sPrefs, "num_shared_buffer_units_per_buffer", qtssAttrDataTypeUInt32,&sSharedBufferUnitSize, sizeof(sSharedBufferUnitSize));
sPrivateBufferUnitSize = 1;
QTSSModuleUtils::GetIOAttribute(sPrefs, "num_private_buffer_units_per_buffer", qtssAttrDataTypeUInt32,&sPrivateBufferUnitSize, sizeof(sPrivateBufferUnitSize));
sSharedBufferMaxUnits = 8;
QTSSModuleUtils::GetIOAttribute(sPrefs, "max_shared_buffer_units_per_buffer", qtssAttrDataTypeUInt32, &sSharedBufferMaxUnits, sizeof(sSharedBufferMaxUnits));
sPrivateBufferMaxUnits = 8;
QTSSModuleUtils::GetIOAttribute(sPrefs, "max_private_buffer_units_per_buffer", qtssAttrDataTypeUInt32, &sPrivateBufferMaxUnits, sizeof(sPrivateBufferMaxUnits));
sAddClientBufferDelaySecs = 0;
QTSSModuleUtils::GetIOAttribute(sPrefs, "add_seconds_to_client_buffer_delay", qtssAttrDataTypeFloat32, &sAddClientBufferDelaySecs, sizeof(sAddClientBufferDelaySecs));
sRecordMovieFileSDP = false;
QTSSModuleUtils::GetIOAttribute(sPrefs, "record_movie_file_sdp", qtssAttrDataTypeBool16, &sRecordMovieFileSDP, sizeof(sRecordMovieFileSDP));
sEnableMovieFileSDP = false;
QTSSModuleUtils::GetIOAttribute(sPrefs, "enable_movie_file_sdp", qtssAttrDataTypeBool16, &sEnableMovieFileSDP, sizeof(sEnableMovieFileSDP));
sPlayerCompatibility = true;
QTSSModuleUtils::GetIOAttribute(sPrefs, "enable_player_compatibility", qtssAttrDataTypeBool16, &sPlayerCompatibility, sizeof(sPlayerCompatibility));
sAdjustMediaBandwidthPercent = 50;
QTSSModuleUtils::GetIOAttribute(sPrefs, "compatibility_adjust_sdp_media_bandwidth_percent", qtssAttrDataTypeUInt32, &sAdjustMediaBandwidthPercent, sizeof(sAdjustMediaBandwidthPercent));
sAdjustRTPStartTimeMilli = 500;
QTSSModuleUtils::GetIOAttribute(sPrefs, "compatibility_adjust_rtp_start_time_milli", qtssAttrDataTypeSInt64, &sAdjustRTPStartTimeMilli, sizeof(sAdjustRTPStartTimeMilli));
sAllowInvalidHintRefs = false;
QTSSModuleUtils::GetIOAttribute(sPrefs, "allow_invalid_hint_track_refs", qtssAttrDataTypeBool16, &sAllowInvalidHintRefs, sizeof(sAllowInvalidHintRefs));
if (sAdjustMediaBandwidthPercent > 100)
sAdjustMediaBandwidthPercent = 100;
if (sAdjustMediaBandwidthPercent < 1)
sAdjustMediaBandwidthPercent = 1;
UInt32 len = sizeof(sDisableThinning);
(void) QTSS_GetValue(sServerPrefs, qtssPrefsDisableThinning, 0, (void*)&sDisableThinning, &len);
len = sizeof(sDefaultStreamingQuality);
(void) QTSS_GetValue(sServerPrefs, qtssPrefsDefaultStreamQuality, 0, (void*)&sDefaultStreamingQuality, &len);
QTSS3GPPModuleUtils::ReadPrefs();
BuildPrefBasedHeaders();
return QTSS_NoErr;
}
QTSS_Error ProcessRTSPRequest(QTSS_StandardRTSP_Params* inParamBlock)
{
QTSS_RTSPMethod* theMethod = NULL;
UInt32 theMethodLen = 0;
if ((QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqMethod, 0,
(void**)&theMethod, &theMethodLen) != QTSS_NoErr) || (theMethodLen != sizeof(QTSS_RTSPMethod)))
{
Assert(0);
return QTSS_RequestFailed;
}
QTSS_Error err = QTSS_NoErr;
switch (*theMethod)
{
case qtssDescribeMethod:
err = DoDescribe(inParamBlock);
break;
case qtssSetupMethod:
err = DoSetup(inParamBlock);
break;
case qtssPlayMethod:
err = DoPlay(inParamBlock);
break;
case qtssTeardownMethod:
(void)QTSS_Teardown(inParamBlock->inClientSession);
(void)QTSS_SendStandardRTSPResponse(inParamBlock->inRTSPRequest, inParamBlock->inClientSession, 0);
break;
case qtssPauseMethod:
{ (void)QTSS_Pause(inParamBlock->inClientSession);
(void)QTSS_SendStandardRTSPResponse(inParamBlock->inRTSPRequest, inParamBlock->inClientSession, 0);
FileSession** theFile = NULL;
UInt32 theLen = 0;
QTSS_Error theErr = QTSS_GetValuePtr(inParamBlock->inClientSession, sFileSessionAttr, 0, (void**)&theFile, &theLen);
if ((theErr != QTSS_NoErr) || (theLen != sizeof(FileSession*)))
return QTSS_RequestFailed;
(**theFile).fPaused = true;
(**theFile).fLastPauseTime = OS::Milliseconds();
break;
}
default:
break;
}
if (err != QTSS_NoErr)
(void)QTSS_Teardown(inParamBlock->inClientSession);
return QTSS_NoErr;
}
Bool16 isSDP(QTSS_StandardRTSP_Params* inParamBlock)
{
Bool16 sdpSuffix = false;
char* path = NULL;
UInt32 len = 0;
QTSS_LockObject(inParamBlock->inRTSPRequest);
QTSS_Error theErr = QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqLocalPath, 0, (void**)&path, &len);
Assert(theErr == QTSS_NoErr);
if (sSDPSuffix.Len <= len)
{
StrPtrLen thePath(&path[len - sSDPSuffix.Len],sSDPSuffix.Len);
sdpSuffix = thePath.Equal(sSDPSuffix);
}
QTSS_UnlockObject(inParamBlock->inRTSPRequest);
return sdpSuffix;
}
QTSS_Error DoDescribe(QTSS_StandardRTSP_Params* inParamBlock)
{
if (isSDP(inParamBlock))
{
StrPtrLen pathStr;
(void)QTSS_LockObject(inParamBlock->inRTSPRequest);
(void)QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqFilePath, 0, (void**)&pathStr.Ptr, &pathStr.Len);
QTSS_Error err = QTSSModuleUtils::SendErrorResponse(inParamBlock->inRTSPRequest, qtssClientNotFound, sNoSDPFileFoundErr, &pathStr);
(void)QTSS_UnlockObject(inParamBlock->inRTSPRequest);
return err;
}
//
// Get the FileSession for this DESCRIBE, if any.
UInt32 theLen = sizeof(FileSession*);
FileSession* theFile = NULL;
QTSS_Error theErr = QTSS_NoErr;
Bool16 pathEndsWithSDP = false;
static StrPtrLen sSDPSuffix(".sdp");
SInt16 vectorIndex = 1;
ResizeableStringFormatter theFullSDPBuffer(NULL,0);
StrPtrLen bufferDelayStr;
char tempBufferDelay[64];
StrPtrLen theSDPData;
(void)QTSS_GetValue(inParamBlock->inClientSession, sFileSessionAttr, 0, (void*)&theFile, &theLen);
// Generate the complete file path
UInt32 thePathLen = 0;
OSCharArrayDeleter thePath(QTSSModuleUtils::GetFullPath(inParamBlock->inRTSPRequest, qtssRTSPReqFilePath,&thePathLen, &sSDPSuffix));
//first locate the target movie
thePath.GetObject()[thePathLen - sSDPSuffix.Len] = '\0';//truncate the .sdp added in the GetFullPath call
StrPtrLen requestPath(thePath.GetObject(), ::strlen(thePath.GetObject()));
if (requestPath.Len > sSDPSuffix.Len )
{ StrPtrLen endOfPath(&requestPath.Ptr[requestPath.Len - sSDPSuffix.Len], sSDPSuffix.Len);
if (endOfPath.EqualIgnoreCase(sSDPSuffix)) // it is a .sdp
{ pathEndsWithSDP = true;
}
}
if ( theFile != NULL )
{
//
// There is already a file for this session. This can happen if there are multiple DESCRIBES,
// or a DESCRIBE has been issued with a Session ID, or some such thing.
StrPtrLen moviePath( theFile->fFile.GetMoviePath() );
// Stop playing because the new file isn't ready yet to send packets.
// Needs a Play request to get things going. SendPackets on the file is active if not paused.
(void)QTSS_Pause(inParamBlock->inClientSession);
(*theFile).fPaused = true;
//
// This describe is for a different file. Delete the old FileSession.
if ( !requestPath.Equal( moviePath ) )
{
DeleteFileSession(theFile);
theFile = NULL;
// NULL out the attribute value, just in case.
(void)QTSS_SetValue(inParamBlock->inClientSession, sFileSessionAttr, 0, &theFile, sizeof(theFile));
}
}
if ( theFile == NULL )
{
theErr = CreateQTRTPFile(inParamBlock, thePath.GetObject(), &theFile);
if (theErr != QTSS_NoErr)
return theErr;
// Store this newly created file object in the RTP session.
theErr = QTSS_SetValue(inParamBlock->inClientSession, sFileSessionAttr, 0, &theFile, sizeof(theFile));
}
//replace the sacred character we have trodden on in order to truncate the path.
thePath.GetObject()[thePathLen - sSDPSuffix.Len] = sSDPSuffix.Ptr[0];
iovec theSDPVec[sNumSDPVectors];//1 for the RTSP header, 6 for the sdp header, 1 for the sdp body
::memset(&theSDPVec[0], 0, sizeof(theSDPVec));
if (sEnableMovieFileSDP)
{
// Check to see if there is an sdp file, if so, return that file instead
// of the built-in sdp. ReadEntireFile allocates memory but if all goes well theSDPData will be managed by the File Session
(void)QTSSModuleUtils::ReadEntireFile(thePath.GetObject(), &theSDPData);
}
OSCharArrayDeleter sdpDataDeleter(theSDPData.Ptr); // Just in case we fail we know to clean up. But we clear the deleter if we succeed.
if (theSDPData.Len > 0)
{
SDPContainer fileSDPContainer;
fileSDPContainer.SetSDPBuffer(&theSDPData);
if (!fileSDPContainer.IsSDPBufferValid())
{ return QTSSModuleUtils::SendErrorResponseWithMessage(inParamBlock->inRTSPRequest, qtssUnsupportedMediaType, &sSDPNotValidMessage);
}
// Append the Last Modified header to be a good caching proxy citizen before sending the Describe
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssLastModifiedHeader,
theFile->fFile.GetQTFile()->GetModDateStr(), DateBuffer::kDateBufferLen);
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssCacheControlHeader,
kCacheControlHeader.Ptr, kCacheControlHeader.Len);
//Now that we have the file data, send an appropriate describe
//response to the client
theSDPVec[1].iov_base = theSDPData.Ptr;
theSDPVec[1].iov_len = theSDPData.Len;
QTSSModuleUtils::SendDescribeResponse(inParamBlock->inRTSPRequest, inParamBlock->inClientSession,
&theSDPVec[0], 3, theSDPData.Len);
}
else
{
// Before generating the SDP and sending it, check to see if there is an If-Modified-Since
// date. If there is, and the content hasn't been modified, then just return a 304 Not Modified
QTSS_TimeVal* theTime = NULL;
(void) QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqIfModSinceDate, 0, (void**)&theTime, &theLen);
if ((theLen == sizeof(QTSS_TimeVal)) && (*theTime > 0))
{
// There is an If-Modified-Since header. Check it vs. the content.
if (*theTime == theFile->fFile.GetQTFile()->GetModDate())
{
theErr = QTSS_SetValue( inParamBlock->inRTSPRequest, qtssRTSPReqStatusCode, 0,
&kNotModifiedStatus, sizeof(kNotModifiedStatus) );
Assert(theErr == QTSS_NoErr);
// Because we are using this call to generate a 304 Not Modified response, we do not need
// to pass in a RTP Stream
theErr = QTSS_SendStandardRTSPResponse(inParamBlock->inRTSPRequest, inParamBlock->inClientSession, 0);
Assert(theErr == QTSS_NoErr);
return QTSS_NoErr;
}
}
FILE* sdpFile = NULL;
if (sRecordMovieFileSDP && !pathEndsWithSDP) // don't auto create sdp for an sdp file because it would look like a broadcast
{
sdpFile = ::fopen(thePath.GetObject(),"r"); // see if there already is a .sdp for the movie
if (sdpFile != NULL) // one already exists don't mess with it
{ ::fclose(sdpFile);
sdpFile = NULL;
}
else
sdpFile = ::fopen(thePath.GetObject(),"w"); // create the .sdp
}
UInt32 totalSDPLength = 0;
//Get filename
//StrPtrLen fileNameStr;
//(void)QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqFilePath, 0, (void**)&fileNameStr.Ptr, (UInt32*)&fileNameStr.Len);
char* fileNameStr = NULL;
(void)QTSS_GetValueAsString(inParamBlock->inRTSPRequest, qtssRTSPReqFilePath, 0, &fileNameStr);
QTSSCharArrayDeleter fileNameStrDeleter(fileNameStr);
//Get IP addr
StrPtrLen ipStr;
(void)QTSS_GetValuePtr(inParamBlock->inRTSPSession, qtssRTSPSesLocalAddrStr, 0, (void**)&ipStr.Ptr, &ipStr.Len);
//
// *** The order of sdp headers is specified and required by rfc 2327
//
// -------- version header
theFullSDPBuffer.Put(sVersionHeader);
theFullSDPBuffer.Put(sEOL);
// -------- owner header
const SInt16 sLineSize = 256;
char ownerLine[sLineSize]="";
ownerLine[sLineSize - 1] = 0;
char *ipCstr = ipStr.GetAsCString();
OSCharArrayDeleter ipDeleter(ipCstr);
// the first number is the NTP time used for the session identifier (this changes for each request)
// the second number is the NTP date time of when the file was modified (this changes when the file changes)
qtss_sprintf(ownerLine, "o=StreamingServer %"_64BITARG_"d %"_64BITARG_"d IN IP4 %s", (SInt64) OS::UnixTime_Secs() + 2208988800LU, (SInt64) theFile->fFile.GetQTFile()->GetModDate(),ipCstr);
Assert(ownerLine[sLineSize - 1] == 0);
StrPtrLen ownerStr(ownerLine);
theFullSDPBuffer.Put(ownerStr);
theFullSDPBuffer.Put(sEOL);
// -------- session header
theFullSDPBuffer.Put(sSessionNameHeader);
theFullSDPBuffer.Put(fileNameStr);
theFullSDPBuffer.Put(sEOL);
// -------- uri header
theFullSDPBuffer.Put(sURLHeader);
theFullSDPBuffer.Put(sEOL);
// -------- email header
theFullSDPBuffer.Put(sEmailHeader);
theFullSDPBuffer.Put(sEOL);
// -------- connection information header
theFullSDPBuffer.Put(sConnectionHeader);
theFullSDPBuffer.Put(sEOL);
// -------- time header
// t=0 0 is a permanent always available movie (doesn't ever change unless we change the code)
theFullSDPBuffer.Put(sPermanentTimeHeader);
theFullSDPBuffer.Put(sEOL);
// -------- control header
theFullSDPBuffer.Put(sStaticControlHeader);
theFullSDPBuffer.Put(sEOL);
// -------- add buffer delay
if (sAddClientBufferDelaySecs > 0) // increase the client buffer delay by the preference amount.
{
Float32 bufferDelay = 3.0; // the client doesn't advertise it's default value so we guess.
static StrPtrLen sBuffDelayStr("a=x-bufferdelay:");
StrPtrLen delayStr;
theSDPData.FindString(sBuffDelayStr, &delayStr);
if (delayStr.Len > 0)
{
UInt32 offset = (delayStr.Ptr - theSDPData.Ptr) + delayStr.Len; // step past the string
delayStr.Ptr = theSDPData.Ptr + offset;
delayStr.Len = theSDPData.Len - offset;
StringParser theBufferSecsParser(&delayStr);
theBufferSecsParser.ConsumeWhitespace();
bufferDelay = theBufferSecsParser.ConsumeFloat();
}
bufferDelay += sAddClientBufferDelaySecs;
qtss_sprintf(tempBufferDelay, "a=x-bufferdelay:%.2f",bufferDelay);
bufferDelayStr.Set(tempBufferDelay);
theFullSDPBuffer.Put(bufferDelayStr);
theFullSDPBuffer.Put(sEOL);
}
// -------- movie file sdp data
//now append content-determined sdp ( cached in QTRTPFile )
int sdpLen = 0;
theSDPData.Ptr = theFile->fFile.GetSDPFile(&sdpLen);
theSDPData.Len = sdpLen;
// ----------- Add the movie's sdp headers to our sdp headers
theFullSDPBuffer.Put(theSDPData);
StrPtrLen fullSDPBuffSPL(theFullSDPBuffer.GetBufPtr(),theFullSDPBuffer.GetBytesWritten());
// ------------ Check the headers
SDPContainer rawSDPContainer;
rawSDPContainer.SetSDPBuffer( &fullSDPBuffSPL );
if (!rawSDPContainer.IsSDPBufferValid())
{ return QTSSModuleUtils::SendErrorResponseWithMessage(inParamBlock->inRTSPRequest, qtssUnsupportedMediaType, &sSDPNotValidMessage);
}
// ------------ reorder the sdp headers to make them proper.
Float32 adjustMediaBandwidthPercent = 1.0;
Bool16 adjustMediaBandwidth = false;
if (sPlayerCompatibility )
adjustMediaBandwidth = QTSSModuleUtils::HavePlayerProfile(sServerPrefs, inParamBlock,QTSSModuleUtils::kAdjustBandwidth);
if (adjustMediaBandwidth)
adjustMediaBandwidthPercent = (Float32) sAdjustMediaBandwidthPercent / 100.0;
ResizeableStringFormatter buffer;
SDPContainer* insertMediaLines = QTSS3GPPModuleUtils::Get3GPPSDPFeatureListCopy(buffer);
SDPLineSorter sortedSDP(&rawSDPContainer,adjustMediaBandwidthPercent,insertMediaLines);
delete insertMediaLines;
StrPtrLen *theSessionHeadersPtr = sortedSDP.GetSessionHeaders();
StrPtrLen *theMediaHeadersPtr = sortedSDP.GetMediaHeaders();
//3GPP-BAD // add the bitrate adaptation string to the SDPLineSorter
//sortedSDP should have a getmedialine[n]
// findstring in line
// getline and insert line to media
/*
5.3.3.5 The bit-rate adaptation support attribute, <20>3GPP-Adaptation-Support<72>
To signal the support of bit-rate adaptation, a media level only SDP attribute is defined in ABNF [53]:
sdp-Adaptation-line = "a" "=" "3GPP-Adaptation-Support" ":" report-frequency CRLF
report-frequency = NonZeroDIGIT [ DIGIT ]
NonZeroDIGIT = %x31-39 ;1-9
A server implementing rate adaptation shall signal the "3GPP-Adaptation-Support" attribute in its SDP.
*/
// ----------- write out the sdp
totalSDPLength += ::WriteSDPHeader(sdpFile, theSDPVec, &vectorIndex, theSessionHeadersPtr);
totalSDPLength += ::WriteSDPHeader(sdpFile, theSDPVec, &vectorIndex, theMediaHeadersPtr);
// -------- done with SDP processing
if (sdpFile !=NULL)
::fclose(sdpFile);
Assert(theSDPData.Len > 0);
Assert(theSDPVec[2].iov_base != NULL);
//ok, we have a filled out iovec. Let's send the response!
// Append the Last Modified header to be a good caching proxy citizen before sending the Describe
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssLastModifiedHeader,
theFile->fFile.GetQTFile()->GetModDateStr(), DateBuffer::kDateBufferLen);
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssCacheControlHeader,
kCacheControlHeader.Ptr, kCacheControlHeader.Len);
QTSSModuleUtils::SendDescribeResponse(inParamBlock->inRTSPRequest, inParamBlock->inClientSession,
&theSDPVec[0], vectorIndex, totalSDPLength);
}
Assert(theSDPData.Ptr != NULL);
Assert(theSDPData.Len > 0);
//now parse the movie media sdp data. We need to do this in order to extract payload information.
//The SDP parser object will not take responsibility of the memory (one exception... see above)
theFile->fSDPSource.Parse(theSDPData.Ptr, theSDPData.Len);
sdpDataDeleter.ClearObject(); // don't delete theSDPData, theFile has it now.
return QTSS_NoErr;
}
QTSS_Error CreateQTRTPFile(QTSS_StandardRTSP_Params* inParamBlock, char* inPath, FileSession** outFile)
{
*outFile = NEW FileSession();
(*outFile)->fFile.SetAllowInvalidHintRefs(sAllowInvalidHintRefs);
QTRTPFile::ErrorCode theErr = (*outFile)->fFile.Initialize(inPath);
if (theErr != QTRTPFile::errNoError)
{
delete *outFile;
*outFile = NULL;
char* thePathStr = NULL;
(void)QTSS_GetValueAsString(inParamBlock->inRTSPRequest, qtssRTSPReqFilePath, 0, &thePathStr);
QTSSCharArrayDeleter thePathStrDeleter(thePathStr);
StrPtrLen thePath(thePathStr);
if (theErr == QTRTPFile::errFileNotFound)
return QTSSModuleUtils::SendErrorResponse( inParamBlock->inRTSPRequest,
qtssClientNotFound,
sNoSDPFileFoundErr,&thePath);
if (theErr == QTRTPFile::errInvalidQuickTimeFile)
return QTSSModuleUtils::SendErrorResponse( inParamBlock->inRTSPRequest,
qtssUnsupportedMediaType,
sBadQTFileErr,&thePath);
if (theErr == QTRTPFile::errNoHintTracks)
return QTSSModuleUtils::SendErrorResponse( inParamBlock->inRTSPRequest,
qtssUnsupportedMediaType,
sFileIsNotHintedErr,&thePath);
if (theErr == QTRTPFile::errInternalError)
return QTSSModuleUtils::SendErrorResponse( inParamBlock->inRTSPRequest,
qtssServerInternal,
sBadQTFileErr,&thePath);
AssertV(0, theErr);
}
return QTSS_NoErr;
}
QTSS_Error DoSetup(QTSS_StandardRTSP_Params* inParamBlock)
{
if (isSDP(inParamBlock))
{
StrPtrLen pathStr;
(void)QTSS_LockObject(inParamBlock->inRTSPRequest);
(void)QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqFilePath, 0, (void**)&pathStr.Ptr, &pathStr.Len);
QTSS_Error err = QTSSModuleUtils::SendErrorResponse(inParamBlock->inRTSPRequest, qtssClientNotFound, sNoSDPFileFoundErr, &pathStr);
(void)QTSS_UnlockObject(inParamBlock->inRTSPRequest);
return err;
}
//setup this track in the file object
FileSession* theFile = NULL;
UInt32 theLen = sizeof(FileSession*);
QTSS_Error theErr = QTSS_GetValue(inParamBlock->inClientSession, sFileSessionAttr, 0, (void*)&theFile, &theLen);
if ((theErr != QTSS_NoErr) || (theLen != sizeof(FileSession*)))
{
char* theFullPath = NULL;
//theErr = QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqLocalPath, 0, (void**)&theFullPath, &theLen);
theErr = QTSS_GetValueAsString(inParamBlock->inRTSPRequest, qtssRTSPReqLocalPath, 0, &theFullPath);
Assert(theErr == QTSS_NoErr);
// This is possible, as clients are not required to send a DESCRIBE. If we haven't set
// anything up yet, set everything up
theErr = CreateQTRTPFile(inParamBlock, theFullPath, &theFile);
QTSS_Delete(theFullPath);
if (theErr != QTSS_NoErr)
return theErr;
int theSDPBodyLen = 0;
char* theSDPData = theFile->fFile.GetSDPFile(&theSDPBodyLen);
//now parse the sdp. We need to do this in order to extract payload information.
//The SDP parser object will not take responsibility of the memory (one exception... see above)
theFile->fSDPSource.Parse(theSDPData, theSDPBodyLen);
// Store this newly created file object in the RTP session.
theErr = QTSS_SetValue(inParamBlock->inClientSession, sFileSessionAttr, 0, &theFile, sizeof(theFile));
}
//unless there is a digit at the end of this path (representing trackID), don't
//even bother with the request
char* theDigitStr = NULL;
(void)QTSS_GetValueAsString(inParamBlock->inRTSPRequest, qtssRTSPReqFileDigit, 0, &theDigitStr);
QTSSCharArrayDeleter theDigitStrDeleter(theDigitStr);
if (theDigitStr == NULL)
return QTSSModuleUtils::SendErrorResponse(inParamBlock->inRTSPRequest,
qtssClientBadRequest, sExpectedDigitFilenameErr);
UInt32 theTrackID = ::strtol(theDigitStr, NULL, 10);
// QTRTPFile::ErrorCode qtfileErr = theFile->fFile.AddTrack(theTrackID, false); //test for 3gpp monotonic wall clocktime and sequence
QTRTPFile::ErrorCode qtfileErr = theFile->fFile.AddTrack(theTrackID, true);
//if we get an error back, forward that error to the client
if (qtfileErr == QTRTPFile::errTrackIDNotFound)
return QTSSModuleUtils::SendErrorResponse(inParamBlock->inRTSPRequest,
qtssClientNotFound, sTrackDoesntExistErr);
else if (qtfileErr != QTRTPFile::errNoError)
return QTSSModuleUtils::SendErrorResponse(inParamBlock->inRTSPRequest,
qtssUnsupportedMediaType, sBadQTFileErr);
// Before setting up this track, check to see if there is an If-Modified-Since
// date. If there is, and the content hasn't been modified, then just return a 304 Not Modified
QTSS_TimeVal* theTime = NULL;
(void) QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqIfModSinceDate, 0, (void**)&theTime, &theLen);
if ((theLen == sizeof(QTSS_TimeVal)) && (*theTime > 0))
{
// There is an If-Modified-Since header. Check it vs. the content.
if (*theTime == theFile->fFile.GetQTFile()->GetModDate())
{
theErr = QTSS_SetValue( inParamBlock->inRTSPRequest, qtssRTSPReqStatusCode, 0,
&kNotModifiedStatus, sizeof(kNotModifiedStatus) );
Assert(theErr == QTSS_NoErr);
// Because we are using this call to generate a 304 Not Modified response, we do not need
// to pass in a RTP Stream
theErr = QTSS_SendStandardRTSPResponse(inParamBlock->inRTSPRequest, inParamBlock->inClientSession, 0);
Assert(theErr == QTSS_NoErr);
return QTSS_NoErr;
}
}
//find the payload for this track ID (if applicable)
StrPtrLen* thePayload = NULL;
UInt32 thePayloadType = qtssUnknownPayloadType;
Float32 bufferDelay = (Float32) 3.0; // FIXME need a constant defined for 3.0 value. It is used multiple places
for (UInt32 x = 0; x < theFile->fSDPSource.GetNumStreams(); x++)
{
SourceInfo::StreamInfo* theStreamInfo = theFile->fSDPSource.GetStreamInfo(x);
if (theStreamInfo->fTrackID == theTrackID)
{
thePayload = &theStreamInfo->fPayloadName;
thePayloadType = theStreamInfo->fPayloadType;
bufferDelay = theStreamInfo->fBufferDelay;
break;
}
}
//Create a new RTP stream
QTSS_RTPStreamObject newStream = NULL;
theErr = QTSS_AddRTPStream(inParamBlock->inClientSession, inParamBlock->inRTSPRequest, &newStream, 0);
if (theErr != QTSS_NoErr)
return theErr;
// Set the payload type, payload name & timescale of this track
SInt32 theTimescale = theFile->fFile.GetTrackTimeScale(theTrackID);
theErr = QTSS_SetValue(newStream, qtssRTPStrBufferDelayInSecs, 0, &bufferDelay, sizeof(bufferDelay));
Assert(theErr == QTSS_NoErr);
theErr = QTSS_SetValue(newStream, qtssRTPStrPayloadName, 0, thePayload->Ptr, thePayload->Len);
Assert(theErr == QTSS_NoErr);
theErr = QTSS_SetValue(newStream, qtssRTPStrPayloadType, 0, &thePayloadType, sizeof(thePayloadType));
Assert(theErr == QTSS_NoErr);
theErr = QTSS_SetValue(newStream, qtssRTPStrTimescale, 0, &theTimescale, sizeof(theTimescale));
Assert(theErr == QTSS_NoErr);
theErr = QTSS_SetValue(newStream, qtssRTPStrTrackID, 0, &theTrackID, sizeof(theTrackID));
Assert(theErr == QTSS_NoErr);
// Set the number of quality levels. Allow up to 6
static UInt32 sNumQualityLevels = 6;
theErr = QTSS_SetValue(newStream, qtssRTPStrNumQualityLevels, 0, &sNumQualityLevels, sizeof(sNumQualityLevels));
Assert(theErr == QTSS_NoErr);
// Get the SSRC of this track
UInt32* theTrackSSRC = NULL;
UInt32 theTrackSSRCSize = 0;
(void)QTSS_GetValuePtr(newStream, qtssRTPStrSSRC, 0, (void**)&theTrackSSRC, &theTrackSSRCSize);
// The RTP stream should ALWAYS have an SSRC assuming QTSS_AddStream succeeded.
Assert((theTrackSSRC != NULL) && (theTrackSSRCSize == sizeof(UInt32)));
//give the file some info it needs.
theFile->fFile.SetTrackSSRC(theTrackID, *theTrackSSRC);
theFile->fFile.SetTrackCookies(theTrackID, newStream, thePayloadType);
StrPtrLen theHeader;
theErr = QTSS_GetValuePtr(inParamBlock->inRTSPHeaders, qtssXRTPMetaInfoHeader, 0, (void**)&theHeader.Ptr, &theHeader.Len);
if (theErr == QTSS_NoErr)
{
//
// If there is an x-RTP-Meta-Info header in the request, mirror that header in the
// response. We will support any fields supported by the QTFileLib.
RTPMetaInfoPacket::FieldID* theFields = NEW RTPMetaInfoPacket::FieldID[RTPMetaInfoPacket::kNumFields];
::memcpy(theFields, QTRTPFile::GetSupportedRTPMetaInfoFields(), sizeof(RTPMetaInfoPacket::FieldID) * RTPMetaInfoPacket::kNumFields);
//
// This function does the work of appending the response header based on the
// fields we support and the requested fields.
theErr = QTSSModuleUtils::AppendRTPMetaInfoHeader(inParamBlock->inRTSPRequest, &theHeader, theFields);
//
// This returns QTSS_NoErr only if there are some valid, useful fields
Bool16 isVideo = false;
if (thePayloadType == qtssVideoPayloadType)
isVideo = true;
if (theErr == QTSS_NoErr)
theFile->fFile.SetTrackRTPMetaInfo(theTrackID, theFields, isVideo);
}
//
// Our array has now been updated to reflect the fields requested by the client.
//send the setup response
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssLastModifiedHeader,
theFile->fFile.GetQTFile()->GetModDateStr(), DateBuffer::kDateBufferLen);
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssCacheControlHeader,
kCacheControlHeader.Ptr, kCacheControlHeader.Len);
theErr = QTSS_SendStandardRTSPResponse(inParamBlock->inRTSPRequest, newStream, 0);
Assert(theErr == QTSS_NoErr);
return QTSS_NoErr;
}
QTSS_Error SetupCacheBuffers(QTSS_StandardRTSP_Params* inParamBlock, FileSession** theFile)
{
UInt32 playCount = 0;
UInt32 theLen = sizeof(playCount);
QTSS_Error theErr = QTSS_GetValue(inParamBlock->inClientSession, sFileSessionPlayCountAttrID, 0, (void*)&playCount, &theLen);
if ( (theErr != QTSS_NoErr) || (theLen != sizeof(playCount)) )
{
playCount = 1;
theErr = QTSS_SetValue(inParamBlock->inClientSession, sFileSessionPlayCountAttrID, 0, &playCount, sizeof(playCount));
if (theErr != QTSS_NoErr)
return QTSS_RequestFailed;
}
if (sEnableSharedBuffers && playCount == 1) // increments num buffers after initialization so do only once per session
(*theFile)->fFile.AllocateSharedBuffers(sSharedBufferUnitKSize, sSharedBufferInc, sSharedBufferUnitSize,sSharedBufferMaxUnits);
if (sEnablePrivateBuffers) // reinitializes buffers to current location so do every time
(*theFile)->fFile.AllocatePrivateBuffers(sSharedBufferUnitKSize, sPrivateBufferUnitSize, sPrivateBufferMaxUnits);
playCount ++;
theErr = QTSS_SetValue(inParamBlock->inClientSession, sFileSessionPlayCountAttrID, 0, &playCount, sizeof(playCount));
if (theErr != QTSS_NoErr)
return QTSS_RequestFailed;
return theErr;
}
QTSS_Error DoPlay(QTSS_StandardRTSP_Params* inParamBlock)
{
QTRTPFile::ErrorCode qtFileErr = QTRTPFile::errNoError;
if (isSDP(inParamBlock))
{
StrPtrLen pathStr;
(void)QTSS_LockObject(inParamBlock->inRTSPRequest);
(void)QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqFilePath, 0, (void**)&pathStr.Ptr, &pathStr.Len);
QTSS_Error err = QTSSModuleUtils::SendErrorResponse(inParamBlock->inRTSPRequest, qtssClientNotFound, sNoSDPFileFoundErr, &pathStr);
(void)QTSS_UnlockObject(inParamBlock->inRTSPRequest);
return err;
}
FileSession** theFile = NULL;
UInt32 theLen = 0;
QTSS_Error theErr = QTSS_GetValuePtr(inParamBlock->inClientSession, sFileSessionAttr, 0, (void**)&theFile, &theLen);
if ((theErr != QTSS_NoErr) || (theLen != sizeof(FileSession*)))
return QTSS_RequestFailed;
theErr = SetupCacheBuffers(inParamBlock, theFile);
if (theErr != QTSS_NoErr)
return theErr;
//make sure to clear the next packet the server would have sent!
(*theFile)->fPacketStruct.packetData = NULL;
// Set the default quality before playing.
QTRTPFile::RTPTrackListEntry* thePacketTrack;
for (UInt32 x = 0; x < (*theFile)->fSDPSource.GetNumStreams(); x++)
{
SourceInfo::StreamInfo* theStreamInfo = (*theFile)->fSDPSource.GetStreamInfo(x);
if (!(*theFile)->fFile.FindTrackEntry(theStreamInfo->fTrackID,&thePacketTrack))
break;
//(*theFile)->fFile.SetTrackQualityLevel(thePacketTrack, QTRTPFile::kAllPackets);
(*theFile)->fFile.SetTrackQualityLevel(thePacketTrack, sDefaultStreamingQuality);
}
// How much are we going to tell the client to back up?
Float32 theBackupTime = 0;
char* thePacketRangeHeader = NULL;
theErr = QTSS_GetValuePtr(inParamBlock->inRTSPHeaders, qtssXPacketRangeHeader, 0, (void**)&thePacketRangeHeader, &theLen);
if (theErr == QTSS_NoErr)
{
StrPtrLen theRangeHdrPtr(thePacketRangeHeader, theLen);
StringParser theRangeParser(&theRangeHdrPtr);
theRangeParser.ConsumeUntil(NULL, StringParser::sDigitMask);
UInt64 theStartPN = theRangeParser.ConsumeInteger();
theRangeParser.ConsumeUntil(NULL, StringParser::sDigitMask);
(*theFile)->fStopPN = theRangeParser.ConsumeInteger();
theRangeParser.ConsumeUntil(NULL, StringParser::sDigitMask);
(*theFile)->fStopTrackID = theRangeParser.ConsumeInteger();
qtFileErr = (*theFile)->fFile.SeekToPacketNumber((*theFile)->fStopTrackID, theStartPN);
(*theFile)->fStartTime = (*theFile)->fFile.GetRequestedSeekTime();
}
else
{
Float64* theStartTimeP = NULL;
Float64 currentTime = 0;
theErr = QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqStartTime, 0, (void**)&theStartTimeP, &theLen);
if ((theErr != QTSS_NoErr) || (theLen != sizeof(Float64)))
{ // No start time so just start at the last packet ready to send
// This packet could be somewhere out in the middle of the file.
currentTime = (*theFile)->fFile.GetFirstPacketTransmitTime();
theStartTimeP = &currentTime;
(*theFile)->fStartTime = currentTime;
}
Float32* theMaxBackupTime = NULL;
theErr = QTSS_GetValuePtr(inParamBlock->inRTSPRequest, qtssRTSPReqPrebufferMaxTime, 0, (void**)&theMaxBackupTime, &theLen);
Assert(theMaxBackupTime != NULL);
if (*theMaxBackupTime == -1)
{
//
// If this is an old client (doesn't send the x-prebuffer header) or an mp4 client,
// - don't back up to a key frame, and do not adjust the buffer time
qtFileErr = (*theFile)->fFile.Seek(*theStartTimeP, 0);
(*theFile)->fStartTime = *theStartTimeP;
//
// burst out -transmit time packets
(*theFile)->fAllowNegativeTTs = false;
}
else
{
qtFileErr = (*theFile)->fFile.Seek(*theStartTimeP, *theMaxBackupTime);
Float64 theFirstPacketTransmitTime = (*theFile)->fFile.GetFirstPacketTransmitTime();
theBackupTime = (Float32) ( *theStartTimeP - theFirstPacketTransmitTime);
//
// For oddly authored movies, there are situations in which the packet
// transmit time can be before the sample time. In that case, the backup
// time may exceed the max backup time. In that case, just make the backup
// time the max backup time.
if (theBackupTime > *theMaxBackupTime)
theBackupTime = *theMaxBackupTime;
//
// If client specifies that it can do extra buffering (new client), use the first
// packet transmit time as the start time for this play burst. We don't need to
// burst any packets because the client can do the extra buffering
Bool16* overBufferEnabledPtr = NULL;
theLen = 0;
theErr = QTSS_GetValuePtr(inParamBlock->inClientSession, qtssCliSesOverBufferEnabled, 0, (void**)&overBufferEnabledPtr, &theLen);
if ((theErr == QTSS_NoErr) && (theLen == sizeof(Bool16)) && *overBufferEnabledPtr)
(*theFile)->fStartTime = *theStartTimeP;
else
(*theFile)->fStartTime = *theStartTimeP - theBackupTime;
(*theFile)->fAllowNegativeTTs = true;
}
}
if (qtFileErr == QTRTPFile::errCallAgain)
{
//
// If we are doing RTP-Meta-Info stuff, we might be asked to get called again here.
// This is simply because seeking might be a long operation and we don't want to
// monopolize the CPU, but there is no other reason to wait, so just set a timeout of 0
theErr = QTSS_SetIdleTimer(1);
Assert(theErr == QTSS_NoErr);
return theErr;
}
else if (qtFileErr != QTRTPFile::errNoError)
return QTSSModuleUtils::SendErrorResponse( inParamBlock->inRTSPRequest,
qtssClientBadRequest, sSeekToNonexistentTimeErr);
//make sure to clear the next packet the server would have sent!
(*theFile)->fPacketStruct.packetData = NULL;
// Set the movie duration and size parameters
Float64 movieDuration = (*theFile)->fFile.GetMovieDuration();
(void)QTSS_SetValue(inParamBlock->inClientSession, qtssCliSesMovieDurationInSecs, 0, &movieDuration, sizeof(movieDuration));
UInt64 movieSize = (*theFile)->fFile.GetAddedTracksRTPBytes();
(void)QTSS_SetValue(inParamBlock->inClientSession, qtssCliSesMovieSizeInBytes, 0, &movieSize, sizeof(movieSize));
UInt32 bitsPerSecond = (*theFile)->fFile.GetBytesPerSecond() * 8;
(void)QTSS_SetValue(inParamBlock->inClientSession, qtssCliSesMovieAverageBitRate, 0, &bitsPerSecond, sizeof(bitsPerSecond));
Bool16 adjustPauseTime = kAddPauseTimeToRTPTime; //keep rtp time stamps monotonically increasing
if ( true == QTSSModuleUtils::HavePlayerProfile( sServerPrefs, inParamBlock,QTSSModuleUtils::kDisablePauseAdjustedRTPTime) )
adjustPauseTime = kDontAddPauseTimeToRTPTime;
if (sPlayerCompatibility ) // don't change adjust setting if compatibility is off.
(**theFile).fAdjustPauseTime = adjustPauseTime;
if ( (**theFile).fLastPauseTime > 0 )
(**theFile).fTotalPauseTime += OS::Milliseconds() - (**theFile).fLastPauseTime;
//
// For the purposes of the speed header, check to make sure all tracks are
// over a reliable transport
Bool16 allTracksReliable = true;
// Set the timestamp & sequence number parameters for each track.
QTSS_RTPStreamObject* theRef = NULL;
for ( UInt32 theStreamIndex = 0;
QTSS_GetValuePtr(inParamBlock->inClientSession, qtssCliSesStreamObjects, theStreamIndex, (void**)&theRef, &theLen) == QTSS_NoErr;
theStreamIndex++)
{
UInt32* theTrackID = NULL;
theErr = QTSS_GetValuePtr(*theRef, qtssRTPStrTrackID, 0, (void**)&theTrackID, &theLen);
Assert(theErr == QTSS_NoErr);
Assert(theTrackID != NULL);
Assert(theLen == sizeof(UInt32));
UInt16 theSeqNum = 0;
UInt32 theTimestamp = (*theFile)->fFile.GetSeekTimestamp(*theTrackID); // this is the base timestamp need to add in paused time.
Assert(theRef != NULL);
if ((**theFile).fAdjustPauseTime)
{
UInt32* theTimescale = NULL;
QTSS_GetValuePtr(*theRef, qtssRTPStrTimescale, 0, (void**)&theTimescale, &theLen);
if (theLen != 0) // adjust the timestamps to reflect paused time else leave it alone we can't calculate the timestamp without a timescale.
{
UInt32 pauseTimeStamp = CalculatePauseTimeStamp( *theTimescale, (*theFile)->fTotalPauseTime, (UInt32) theTimestamp);
if (pauseTimeStamp != theTimestamp)
theTimestamp = pauseTimeStamp;
}
}
theSeqNum = (*theFile)->fFile.GetNextTrackSequenceNumber(*theTrackID);
theErr = QTSS_SetValue(*theRef, qtssRTPStrFirstSeqNumber, 0, &theSeqNum, sizeof(theSeqNum));
Assert(theErr == QTSS_NoErr);
theErr = QTSS_SetValue(*theRef, qtssRTPStrFirstTimestamp, 0, &theTimestamp, sizeof(theTimestamp));
Assert(theErr == QTSS_NoErr);
if (allTracksReliable)
{
QTSS_RTPTransportType theTransportType = qtssRTPTransportTypeUDP;
theLen = sizeof(theTransportType);
theErr = QTSS_GetValue(*theRef, qtssRTPStrTransportType, 0, &theTransportType, &theLen);
Assert(theErr == QTSS_NoErr);
if (theTransportType == qtssRTPTransportTypeUDP)
allTracksReliable = false;
}
}
//Tell the QTRTPFile whether repeat packets are wanted based on the transport
// we don't care if it doesn't set (i.e. this is a meta info session)
(void) (*theFile)->fFile.SetDropRepeatPackets(allTracksReliable);// if alltracks are reliable then drop repeat packets.
//
// This module supports the Speed header if the client wants the stream faster than normal.
Float32 theSpeed = 1;
theLen = sizeof(theSpeed);
theErr = QTSS_GetValue(inParamBlock->inRTSPRequest, qtssRTSPReqSpeed, 0, &theSpeed, &theLen);
Assert(theErr != QTSS_BadArgument);
Assert(theErr != QTSS_NotEnoughSpace);
if (theErr == QTSS_NoErr)
{
if (theSpeed > sMaxAllowedSpeed)
theSpeed = sMaxAllowedSpeed;
if ((theSpeed <= 0) || (!allTracksReliable))
theSpeed = 1;
}
(*theFile)->fSpeed = theSpeed;
if (theSpeed != 1)
{
//
// If our speed is not 1, append the RTSP speed header in the response
char speedBuf[32];
qtss_sprintf(speedBuf, "%10.5f", theSpeed);
StrPtrLen speedBufPtr(speedBuf);
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssSpeedHeader,
speedBufPtr.Ptr, speedBufPtr.Len);
}
//
// Record the requested stop time, if there is one
(*theFile)->fStopTime = -1;
theLen = sizeof((*theFile)->fStopTime);
theErr = QTSS_GetValue(inParamBlock->inRTSPRequest, qtssRTSPReqStopTime, 0, &(*theFile)->fStopTime, &theLen);
//
// Append x-Prebuffer header if provided & nonzero prebuffer needed
if (theBackupTime > 0)
{
char prebufferBuf[32];
qtss_sprintf(prebufferBuf, "time=%.5f", theBackupTime);
StrPtrLen backupTimePtr(prebufferBuf);
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssXPreBufferHeader,
backupTimePtr.Ptr, backupTimePtr.Len);
}
// add the range header.
{
char rangeHeader[64];
if (-1 == (*theFile)->fStopTime)
(*theFile)->fStopTime = (*theFile)->fFile.GetMovieDuration();
qtss_snprintf(rangeHeader,sizeof(rangeHeader) -1, "npt=%.5f-%.5f", (*theFile)->fStartTime, (*theFile)->fStopTime);
rangeHeader[sizeof(rangeHeader) -1] = 0;
StrPtrLen rangeHeaderPtr(rangeHeader);
(void)QTSS_AppendRTSPHeader(inParamBlock->inRTSPRequest, qtssRangeHeader,
rangeHeaderPtr.Ptr, rangeHeaderPtr.Len);
}
(void)QTSS_SendStandardRTSPResponse(inParamBlock->inRTSPRequest, inParamBlock->inClientSession, qtssPlayRespWriteTrackInfo);
SInt64 adjustRTPStreamStartTimeMilli = 0;
if (sPlayerCompatibility && QTSSModuleUtils::HavePlayerProfile(sServerPrefs, inParamBlock,QTSSModuleUtils::kDelayRTPStreamsUntilAfterRTSPResponse))
adjustRTPStreamStartTimeMilli = sAdjustRTPStartTimeMilli;
//Tell the server to start playing this movie. We do want it to send RTCP SRs, but
//we DON'T want it to write the RTP header
(*theFile)->fPaused = false;
theErr = QTSS_Play(inParamBlock->inClientSession, inParamBlock->inRTSPRequest, qtssPlayFlagsSendRTCP);
if (theErr != QTSS_NoErr)
return theErr;
// Set the adjusted play time. SendPackets can get called between QTSS_Play and
// setting fAdjustedPlayTime below.
SInt64* thePlayTime = NULL;
theErr = QTSS_GetValuePtr(inParamBlock->inClientSession, qtssCliSesPlayTimeInMsec, 0, (void**)&thePlayTime, &theLen);
Assert(theErr == QTSS_NoErr);
Assert(thePlayTime != NULL);
Assert(theLen == sizeof(SInt64));
if (thePlayTime != NULL)
(*theFile)->fAdjustedPlayTime = adjustRTPStreamStartTimeMilli + *thePlayTime - ((SInt64)((*theFile)->fStartTime * 1000) );
return QTSS_NoErr;
}
QTSS_Error SendPackets(QTSS_RTPSendPackets_Params* inParams)
{
static const UInt32 kQualityCheckIntervalInMsec = 250; // v331=v107
FileSession** theFile = NULL;
UInt32 theLen = 0;
QTSS_Error theErr = QTSS_GetValuePtr(inParams->inClientSession, sFileSessionAttr, 0, (void**)&theFile, &theLen);
Assert(theErr == QTSS_NoErr);
Assert(theLen == sizeof(FileSession*));
bool isBeginningOfWriteBurst = true;
QTSS_Object theStream = NULL;
if ( theFile == NULL || (*theFile)->fStartTime == -1 || (*theFile)->fPaused == true ) //something is wrong
{
Assert( theFile != NULL );
Assert( (*theFile)->fStartTime != -1 );
Assert( (*theFile)->fPaused != true );
inParams->outNextPacketTime = qtssDontCallSendPacketsAgain;
return QTSS_NoErr;
}
if ( (*theFile)->fAdjustedPlayTime == 0 ) // this is system milliseconds
{
Assert( (*theFile)->fAdjustedPlayTime != 0 );
inParams->outNextPacketTime = kQualityCheckIntervalInMsec;
return QTSS_NoErr;
}
QTRTPFile::RTPTrackListEntry* theLastPacketTrack = (*theFile)->fFile.GetLastPacketTrack();
while (true)
{
if ((*theFile)->fPacketStruct.packetData == NULL)
{
Float64 theTransmitTime = (*theFile)->fFile.GetNextPacket((char**)&(*theFile)->fPacketStruct.packetData, &(*theFile)->fNextPacketLen);
if ( QTRTPFile::errNoError != (*theFile)->fFile.Error() )
{
QTSS_CliSesTeardownReason reason = qtssCliSesTearDownUnsupportedMedia;
(void) QTSS_SetValue(inParams->inClientSession, qtssCliTeardownReason, 0, &reason, sizeof(reason));
(void)QTSS_Teardown(inParams->inClientSession);
return QTSS_RequestFailed;
}
theLastPacketTrack = (*theFile)->fFile.GetLastPacketTrack();
if (theLastPacketTrack == NULL)
break;
theStream = (QTSS_Object)theLastPacketTrack->Cookie1;
Assert(theStream != NULL);
if (theStream == NULL)
return 0;
//
// Check to see if we should stop playing now
if (((*theFile)->fStopTime != -1) && (theTransmitTime > (*theFile)->fStopTime))
{
// We should indeed stop playing
(void)QTSS_Pause(inParams->inClientSession);
inParams->outNextPacketTime = qtssDontCallSendPacketsAgain;
(**theFile).fPaused = true;
(**theFile).fLastPauseTime = OS::Milliseconds();
return QTSS_NoErr;
}
if (((*theFile)->fStopTrackID != 0) && ((*theFile)->fStopTrackID == theLastPacketTrack->TrackID) && (theLastPacketTrack->HTCB->fCurrentPacketNumber > (*theFile)->fStopPN))
{
// We should indeed stop playing
(void)QTSS_Pause(inParams->inClientSession);
inParams->outNextPacketTime = qtssDontCallSendPacketsAgain;
(**theFile).fPaused = true;
(**theFile).fLastPauseTime = OS::Milliseconds();
return QTSS_NoErr;
}
//
// Find out what our play speed is. Send packets out at the specified rate,
// and do so by altering the transmit time of the packet based on the Speed rate.
Float64 theOffsetFromStartTime = theTransmitTime - (*theFile)->fStartTime;
theTransmitTime = (*theFile)->fStartTime + (theOffsetFromStartTime / (*theFile)->fSpeed);
//
// correct for first packet xmit times that are < 0
if (( theTransmitTime < 0.0 ) && ( !(*theFile)->fAllowNegativeTTs ))
theTransmitTime = 0.0;
(*theFile)->fPacketStruct.packetTransmitTime = (*theFile)->fAdjustedPlayTime + ((SInt64)(theTransmitTime * 1000));
}
//We are done playing all streams!
if ((*theFile)->fPacketStruct.packetData == NULL)
{
//TODO not quite good to the last drop -- we -really- should guarantee this, also reflector
// a write of 0 len to QTSS_Write will flush any buffered data if we're sending over tcp
//(void)QTSS_Write((QTSS_Object)(*theFile)->fFile.GetLastPacketTrack()->Cookie1, NULL, 0, NULL, qtssWriteFlagsIsRTP);
inParams->outNextPacketTime = qtssDontCallSendPacketsAgain;
return QTSS_NoErr;
}
//we have a packet that needs to be sent now
Assert(theLastPacketTrack != NULL);
//If the stream is video, we need to make sure that QTRTPFile knows what quality level we're at
if ( (!sDisableThinning) && (inParams->inCurrentTime > ((*theFile)->fLastQualityCheck + kQualityCheckIntervalInMsec) ) )
{
QTSS_RTPPayloadType thePayloadType = (QTSS_RTPPayloadType)theLastPacketTrack->Cookie2;
if (thePayloadType == qtssVideoPayloadType)
{
(*theFile)->fLastQualityCheck = inParams->inCurrentTime;
theStream = (QTSS_Object)theLastPacketTrack->Cookie1;
Assert(theStream != NULL);
if (theStream == NULL)
return 0;
// Get the current quality level in the stream, and this stream's TrackID.
UInt32* theQualityLevel = 0;
theErr = QTSS_GetValuePtr(theStream, qtssRTPStrQualityLevel, 0, (void**)&theQualityLevel, &theLen);
Assert(theErr == QTSS_NoErr);
Assert(theQualityLevel != NULL);
Assert(theLen == sizeof(UInt32));
(*theFile)->fFile.SetTrackQualityLevel(theLastPacketTrack, *theQualityLevel);
}
}
// Send the packet!
QTSS_WriteFlags theFlags = qtssWriteFlagsIsRTP;
if (isBeginningOfWriteBurst)
theFlags |= qtssWriteFlagsWriteBurstBegin;
theStream = (QTSS_Object)theLastPacketTrack->Cookie1;
Assert(theStream != NULL);
if (theStream == NULL)
return 0;
//adjust the timestamp so it reflects paused time.
void* packetDataPtr = (*theFile)->fPacketStruct.packetData;
UInt32 currentTimeStamp = GetPacketTimeStamp(packetDataPtr);
UInt32 pauseTimeStamp = SetPausetimeTimeStamp(*theFile, theStream, currentTimeStamp);
UInt16 curSeqNum = GetPacketSequenceNumber(theStream);
(void) QTSS_SetValue(theStream, sRTPStreamLastPacketSeqNumAttrID, 0, &curSeqNum, sizeof(curSeqNum));
theErr = QTSS_Write(theStream, &(*theFile)->fPacketStruct, (*theFile)->fNextPacketLen, NULL, theFlags);
isBeginningOfWriteBurst = false;
if ( theErr == QTSS_WouldBlock )
{
if (currentTimeStamp != pauseTimeStamp) // reset the packet time stamp so we adjust it again when we really do send it
SetPacketTimeStamp(currentTimeStamp, packetDataPtr);
//
// In the case of a QTSS_WouldBlock error, the packetTransmitTime field of the packet struct will be set to
// the time to wakeup, or -1 if not known.
// If the time to wakeup is not given by the server, just give a fixed guess interval
if ((*theFile)->fPacketStruct.suggestedWakeupTime == -1)
inParams->outNextPacketTime = sFlowControlProbeInterval; // for buffering, try me again in # MSec
else
{
Assert((*theFile)->fPacketStruct.suggestedWakeupTime > inParams->inCurrentTime);
inParams->outNextPacketTime = (*theFile)->fPacketStruct.suggestedWakeupTime - inParams->inCurrentTime;
}
//qtss_printf("Call again: %qd\n", inParams->outNextPacketTime);
return QTSS_NoErr;
}
else
{
(void) QTSS_SetValue(theStream, sRTPStreamLastSentPacketSeqNumAttrID, 0, &curSeqNum, sizeof(curSeqNum));
(*theFile)->fPacketStruct.packetData = NULL;
}
}
return QTSS_NoErr;
}
QTSS_Error DestroySession(QTSS_ClientSessionClosing_Params* inParams)
{
FileSession** theFile = NULL;
UInt32 theLen = 0;
QTSS_Error theErr = QTSS_GetValuePtr(inParams->inClientSession, sFileSessionAttr, 0, (void**)&theFile, &theLen);
if ((theErr != QTSS_NoErr) || (theLen != sizeof(FileSession*)) || (theFile == NULL))
return QTSS_RequestFailed;
//
// Tell the ClientSession how many samples we skipped because of stream thinning
UInt32 theNumSkippedSamples = (*theFile)->fFile.GetNumSkippedSamples();
(void)QTSS_SetValue(inParams->inClientSession, qtssCliSesFramesSkipped, 0, &theNumSkippedSamples, sizeof(theNumSkippedSamples));
DeleteFileSession(*theFile);
return QTSS_NoErr;
}
void DeleteFileSession(FileSession* inFileSession)
{
delete inFileSession;
}
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