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/AC3AudioStreamFramer.hh | 70 +++++++++++++++++++++++++++++++++++
1 files changed, 70 insertions(+), 0 deletions(-)
diff --git a/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/AC3AudioStreamFramer.hh b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/AC3AudioStreamFramer.hh
new file mode 100644
index 0000000..f7bac67
--- /dev/null
+++ b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/AC3AudioStreamFramer.hh
@@ -0,0 +1,70 @@
+/**********
+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 breaks up an AC3 audio elementary stream into frames
+// C++ header
+
+#ifndef _AC3_AUDIO_STREAM_FRAMER_HH
+#define _AC3_AUDIO_STREAM_FRAMER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+class AC3AudioStreamFramer: public FramedFilter {
+public:
+ static AC3AudioStreamFramer*
+ createNew(UsageEnvironment& env, FramedSource* inputSource,
+ unsigned char streamCode = 0);
+ // If "streamCode" != 0, then we assume that there's a 1-byte code at the beginning of each chunk of data that we read from
+ // our source. If that code is not the value we want, we discard the chunk of data.
+ // However, if "streamCode" == 0 (the default), then we don't expect this 1-byte code.
+
+ unsigned samplingRate();
+
+ void flushInput(); // called if there is a discontinuity (seeking) in the input
+
+private:
+ AC3AudioStreamFramer(UsageEnvironment& env, FramedSource* inputSource,
+ unsigned char streamCode);
+ // called only by createNew()
+ virtual ~AC3AudioStreamFramer();
+
+ static void handleNewData(void* clientData,
+ unsigned char* ptr, unsigned size,
+ struct timeval presentationTime);
+ void handleNewData(unsigned char* ptr, unsigned size);
+
+ void parseNextFrame();
+
+private:
+ // redefined virtual functions:
+ virtual void doGetNextFrame();
+
+private:
+ struct timeval currentFramePlayTime() const;
+
+private:
+ struct timeval fNextFramePresentationTime;
+
+private: // parsing state
+ class AC3AudioStreamParser* fParser;
+ unsigned char fOurStreamCode;
+ friend class AC3AudioStreamParser; // hack
+};
+
+#endif
--
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