From 41bc5a329c73e3b43695f73f11c47c97c44cc1b6 Mon Sep 17 00:00:00 2001
From: chenke <chenke@454eff88-639b-444f-9e54-f578c98de674>
Date: 星期四, 20 七月 2017 09:45:41 +0800
Subject: [PATCH]
---
VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/MediaSink.hh | 135 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 135 insertions(+), 0 deletions(-)
diff --git a/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/MediaSink.hh b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/MediaSink.hh
new file mode 100644
index 0000000..6486d2f
--- /dev/null
+++ b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/MediaSink.hh
@@ -0,0 +1,135 @@
+/**********
+This library is free software; you can redistribute it and/or modify it under
+the terms of the GNU Lesser General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
+
+This library is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
+more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with this library; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+**********/
+// "liveMedia"
+// Copyright (c) 1996-2017 Live Networks, Inc. All rights reserved.
+// Media Sinks
+// C++ header
+
+#ifndef _MEDIA_SINK_HH
+#define _MEDIA_SINK_HH
+
+#ifndef _FRAMED_SOURCE_HH
+#include "FramedSource.hh"
+#endif
+
+class MediaSink: public Medium {
+public:
+ static Boolean lookupByName(UsageEnvironment& env, char const* sinkName,
+ MediaSink*& resultSink);
+
+ typedef void (afterPlayingFunc)(void* clientData);
+ Boolean startPlaying(MediaSource& source,
+ afterPlayingFunc* afterFunc,
+ void* afterClientData);
+ virtual void stopPlaying();
+
+ // Test for specific types of sink:
+ virtual Boolean isRTPSink() const;
+
+ FramedSource* source() const {return fSource;}
+
+protected:
+ MediaSink(UsageEnvironment& env); // abstract base class
+ virtual ~MediaSink();
+
+ virtual Boolean sourceIsCompatibleWithUs(MediaSource& source);
+ // called by startPlaying()
+ virtual Boolean continuePlaying() = 0;
+ // called by startPlaying()
+
+ static void onSourceClosure(void* clientData); // can be used in "getNextFrame()" calls
+ void onSourceClosure();
+ // should be called (on ourselves) by continuePlaying() when it
+ // discovers that the source we're playing from has closed.
+
+ FramedSource* fSource;
+
+private:
+ // redefined virtual functions:
+ virtual Boolean isSink() const;
+
+private:
+ // The following fields are used when we're being played:
+ afterPlayingFunc* fAfterFunc;
+ void* fAfterClientData;
+};
+
+// A data structure that a sink may use for an output packet:
+class OutPacketBuffer {
+public:
+ OutPacketBuffer(unsigned preferredPacketSize, unsigned maxPacketSize,
+ unsigned maxBufferSize = 0);
+ // if "maxBufferSize" is >0, use it - instead of "maxSize" to compute the buffer size
+ ~OutPacketBuffer();
+
+ static unsigned maxSize;
+ static void increaseMaxSizeTo(unsigned newMaxSize) { if (newMaxSize > OutPacketBuffer::maxSize) OutPacketBuffer::maxSize = newMaxSize; }
+
+ unsigned char* curPtr() const {return &fBuf[fPacketStart + fCurOffset];}
+ unsigned totalBytesAvailable() const {
+ return fLimit - (fPacketStart + fCurOffset);
+ }
+ unsigned totalBufferSize() const { return fLimit; }
+ unsigned char* packet() const {return &fBuf[fPacketStart];}
+ unsigned curPacketSize() const {return fCurOffset;}
+
+ void increment(unsigned numBytes) {fCurOffset += numBytes;}
+
+ void enqueue(unsigned char const* from, unsigned numBytes);
+ void enqueueWord(u_int32_t word);
+ void insert(unsigned char const* from, unsigned numBytes, unsigned toPosition);
+ void insertWord(u_int32_t word, unsigned toPosition);
+ void extract(unsigned char* to, unsigned numBytes, unsigned fromPosition);
+ u_int32_t extractWord(unsigned fromPosition);
+
+ void skipBytes(unsigned numBytes);
+
+ Boolean isPreferredSize() const {return fCurOffset >= fPreferred;}
+ Boolean wouldOverflow(unsigned numBytes) const {
+ return (fCurOffset+numBytes) > fMax;
+ }
+ unsigned numOverflowBytes(unsigned numBytes) const {
+ return (fCurOffset+numBytes) - fMax;
+ }
+ Boolean isTooBigForAPacket(unsigned numBytes) const {
+ return numBytes > fMax;
+ }
+
+ void setOverflowData(unsigned overflowDataOffset,
+ unsigned overflowDataSize,
+ struct timeval const& presentationTime,
+ unsigned durationInMicroseconds);
+ unsigned overflowDataSize() const {return fOverflowDataSize;}
+ struct timeval overflowPresentationTime() const {return fOverflowPresentationTime;}
+ unsigned overflowDurationInMicroseconds() const {return fOverflowDurationInMicroseconds;}
+ Boolean haveOverflowData() const {return fOverflowDataSize > 0;}
+ void useOverflowData();
+
+ void adjustPacketStart(unsigned numBytes);
+ void resetPacketStart();
+ void resetOffset() { fCurOffset = 0; }
+ void resetOverflowData() { fOverflowDataOffset = fOverflowDataSize = 0; }
+
+private:
+ unsigned fPacketStart, fCurOffset, fPreferred, fMax, fLimit;
+ unsigned char* fBuf;
+
+ unsigned fOverflowDataOffset, fOverflowDataSize;
+ struct timeval fOverflowPresentationTime;
+ unsigned fOverflowDurationInMicroseconds;
+};
+
+#endif
--
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