From 2e2a51283dfebaa23b3d580743d4556dc7c30a91 Mon Sep 17 00:00:00 2001
From: xuxiuxi <xuxiuxi@454eff88-639b-444f-9e54-f578c98de674>
Date: 星期三, 03 五月 2017 12:21:46 +0800
Subject: [PATCH]
---
VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/uLawAudioFilter.hh | 208 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 208 insertions(+), 0 deletions(-)
diff --git a/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/uLawAudioFilter.hh b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/uLawAudioFilter.hh
new file mode 100644
index 0000000..c21947c
--- /dev/null
+++ b/VisitFace/RtspNativeCodec/app/libs/live555/include/liveMedia/uLawAudioFilter.hh
@@ -0,0 +1,208 @@
+/**********
+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.
+// Filters for converting between raw PCM audio and uLaw
+// C++ header
+
+#ifndef _ULAW_AUDIO_FILTER_HH
+#define _ULAW_AUDIO_FILTER_HH
+
+#ifndef _FRAMED_FILTER_HH
+#include "FramedFilter.hh"
+#endif
+
+////////// 16-bit PCM (in various byte orderings) -> 8-bit u-Law //////////
+
+class uLawFromPCMAudioSource: public FramedFilter {
+public:
+ static uLawFromPCMAudioSource*
+ createNew(UsageEnvironment& env, FramedSource* inputSource,
+ int byteOrdering = 0);
+ // "byteOrdering" == 0 => host order (the default)
+ // "byteOrdering" == 1 => little-endian order
+ // "byteOrdering" == 2 => network (i.e., big-endian) order
+
+protected:
+ uLawFromPCMAudioSource(UsageEnvironment& env, FramedSource* inputSource,
+ int byteOrdering);
+ // called only by createNew()
+ virtual ~uLawFromPCMAudioSource();
+
+private:
+ // Redefined virtual functions:
+ virtual void doGetNextFrame();
+
+private:
+ static void afterGettingFrame(void* clientData, unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+ void afterGettingFrame1(unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+
+private:
+ int fByteOrdering;
+ unsigned char* fInputBuffer;
+ unsigned fInputBufferSize;
+};
+
+
+////////// u-Law -> 16-bit PCM (in host order) //////////
+
+class PCMFromuLawAudioSource: public FramedFilter {
+public:
+ static PCMFromuLawAudioSource*
+ createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+ PCMFromuLawAudioSource(UsageEnvironment& env,
+ FramedSource* inputSource);
+ // called only by createNew()
+ virtual ~PCMFromuLawAudioSource();
+
+private:
+ // Redefined virtual functions:
+ virtual void doGetNextFrame();
+
+private:
+ static void afterGettingFrame(void* clientData, unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+ void afterGettingFrame1(unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+
+private:
+ unsigned char* fInputBuffer;
+ unsigned fInputBufferSize;
+};
+
+
+////////// 16-bit values (in host order) -> 16-bit network order //////////
+
+class NetworkFromHostOrder16: public FramedFilter {
+public:
+ static NetworkFromHostOrder16*
+ createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+ NetworkFromHostOrder16(UsageEnvironment& env, FramedSource* inputSource);
+ // called only by createNew()
+ virtual ~NetworkFromHostOrder16();
+
+private:
+ // Redefined virtual functions:
+ virtual void doGetNextFrame();
+
+private:
+ static void afterGettingFrame(void* clientData, unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+ void afterGettingFrame1(unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+};
+
+
+////////// 16-bit values (in network order) -> 16-bit host order //////////
+
+class HostFromNetworkOrder16: public FramedFilter {
+public:
+ static HostFromNetworkOrder16*
+ createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+ HostFromNetworkOrder16(UsageEnvironment& env, FramedSource* inputSource);
+ // called only by createNew()
+ virtual ~HostFromNetworkOrder16();
+
+private:
+ // Redefined virtual functions:
+ virtual void doGetNextFrame();
+
+private:
+ static void afterGettingFrame(void* clientData, unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+ void afterGettingFrame1(unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+};
+
+
+////////// 16-bit values: little-endian <-> big-endian //////////
+
+class EndianSwap16: public FramedFilter {
+public:
+ static EndianSwap16* createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+ EndianSwap16(UsageEnvironment& env, FramedSource* inputSource);
+ // called only by createNew()
+ virtual ~EndianSwap16();
+
+private:
+ // Redefined virtual functions:
+ virtual void doGetNextFrame();
+
+private:
+ static void afterGettingFrame(void* clientData, unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+ void afterGettingFrame1(unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+};
+
+
+////////// 24-bit values: little-endian <-> big-endian //////////
+
+class EndianSwap24: public FramedFilter {
+public:
+ static EndianSwap24* createNew(UsageEnvironment& env, FramedSource* inputSource);
+
+protected:
+ EndianSwap24(UsageEnvironment& env, FramedSource* inputSource);
+ // called only by createNew()
+ virtual ~EndianSwap24();
+
+private:
+ // Redefined virtual functions:
+ virtual void doGetNextFrame();
+
+private:
+ static void afterGettingFrame(void* clientData, unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+ void afterGettingFrame1(unsigned frameSize,
+ unsigned numTruncatedBytes,
+ struct timeval presentationTime,
+ unsigned durationInMicroseconds);
+};
+
+#endif
--
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