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ADTSAudioStreamDiscreteFramer.hh
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1/**********
2This library is free software; you can redistribute it and/or modify it under
3the terms of the GNU Lesser General Public License as published by the
4Free Software Foundation; either version 3 of the License, or (at your
5option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
6
7This library is distributed in the hope that it will be useful, but WITHOUT
8ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
9FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
10more details.
11
12You should have received a copy of the GNU Lesser General Public License
13along with this library; if not, write to the Free Software Foundation, Inc.,
1451 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
15**********/
16// "liveMedia"
17// Copyright (c) 1996-2024 Live Networks, Inc. All rights reserved.
18// A filter that reads (discrete) AAC audio frames, and outputs each frame with
19// a preceding ADTS header.
20// C++ header
21
22#ifndef _ADTS_AUDIO_STREAM_DISCRETE_FRAMER_HH
23#define _ADTS_AUDIO_STREAM_DISCRETE_FRAMER_HH
24
25#ifndef _FRAMED_FILTER_HH
26#include "FramedFilter.hh"
27#endif
28
29#define ADTS_HEADER_SIZE 7 // we don't include a checksum
30
32public:
34 createNew(UsageEnvironment& env, FramedSource* inputSource, char const* configStr);
35 // "configStr" should be a 4-character hexadecimal string for a 2-byte value
36
37protected:
39 u_int8_t profile, u_int8_t samplingFrequencyIndex, u_int8_t channelConfiguration);
40 // called only by createNew()
42
43protected:
44 // redefined virtual functions:
45 virtual void doGetNextFrame();
46
47protected:
48 static void afterGettingFrame(void* clientData, unsigned frameSize,
49 unsigned numTruncatedBytes,
50 struct timeval presentationTime,
51 unsigned durationInMicroseconds);
52 void afterGettingFrame1(unsigned frameSize,
53 unsigned numTruncatedBytes,
54 struct timeval presentationTime,
55 unsigned durationInMicroseconds);
56
57private:
59};
60
61#endif
#define ADTS_HEADER_SIZE
static void afterGettingFrame(void *clientData, unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime, unsigned durationInMicroseconds)
ADTSAudioStreamDiscreteFramer(UsageEnvironment &env, FramedSource *inputSource, u_int8_t profile, u_int8_t samplingFrequencyIndex, u_int8_t channelConfiguration)
void afterGettingFrame1(unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime, unsigned durationInMicroseconds)
static ADTSAudioStreamDiscreteFramer * createNew(UsageEnvironment &env, FramedSource *inputSource, char const *configStr)
FramedSource * inputSource() const
Definition: FramedFilter.hh:30