From 15d0c49e85159b9e27870aff5280c0cd95b103c4 Mon Sep 17 00:00:00 2001
From: xuxiuxi <xuxiuxi@454eff88-639b-444f-9e54-f578c98de674>
Date: 星期四, 04 五月 2017 17:16:56 +0800
Subject: [PATCH]
---
VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/DVVideoStreamFramer.hh | 72 ++++++++++++++++++++++++++++++++++++
1 files changed, 72 insertions(+), 0 deletions(-)
diff --git a/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/DVVideoStreamFramer.hh b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/DVVideoStreamFramer.hh
new file mode 100644
index 0000000..addf3fe
--- /dev/null
+++ b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/DVVideoStreamFramer.hh
@@ -0,0 +1,72 @@
+/**********
+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.
+// A filter that parses a DV input stream into DV frames to deliver to the downstream object
+// C++ header
+
+#ifndef _DV_VIDEO_STREAM_FRAMER_HH
+#define _DV_VIDEO_STREAM_FRAMER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+#define DV_DIF_BLOCK_SIZE 80
+#define DV_NUM_BLOCKS_PER_SEQUENCE 150
+#define DV_SAVED_INITIAL_BLOCKS_SIZE ((DV_NUM_BLOCKS_PER_SEQUENCE+6-1)*DV_DIF_BLOCK_SIZE)
+ /* enough data to ensure that it contains an intact 6-block header (which occurs at the start of a 150-block sequence) */
+
+class DVVideoStreamFramer: public FramedFilter {
+public:
+ static DVVideoStreamFramer*
+ createNew(UsageEnvironment& env, FramedSource* inputSource,
+ Boolean sourceIsSeekable = False, Boolean leavePresentationTimesUnmodified = False);
+ // Set "sourceIsSeekable" to True if the input source is a seekable object (e.g. a file), and the server that uses us
+ // does a seek-to-zero on the source before reading from it. (Our RTSP server implementation does this.)
+ char const* profileName();
+ Boolean getFrameParameters(unsigned& frameSize/*bytes*/, double& frameDuration/*microseconds*/);
+
+protected:
+ DVVideoStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+ Boolean sourceIsSeekable, Boolean leavePresentationTimesUnmodified);
+ // called only by createNew(), or by subclass constructors
+ virtual ~DVVideoStreamFramer();
+
+protected:
+ // redefined virtual functions:
+ virtual Boolean isDVVideoStreamFramer() const;
+ virtual void doGetNextFrame();
+
+protected:
+ void getAndDeliverData(); // used to implement "doGetNextFrame()"
+ static void afterGettingFrame(void* clientData, unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+ void afterGettingFrame(unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime);
+ void getProfile();
+
+protected:
+ Boolean fLeavePresentationTimesUnmodified;
+ void const* fOurProfile;
+ struct timeval fNextFramePresentationTime;
+ unsigned char fSavedInitialBlocks[DV_SAVED_INITIAL_BLOCKS_SIZE];
+ char fInitialBlocksPresent;
+ Boolean fSourceIsSeekable;
+};
+
+#endif
--
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