MythTV  master
audioconvert.h
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1 
2 /*
3  * Class AudioConvert
4  * Created by Jean-Yves Avenard on 10/06/13.
5  *
6  * Copyright (C) Bubblestuff Pty Ltd 2013
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 
24 #ifndef __MythXCode__audioconvert__
25 #define __MythXCode__audioconvert__
26 
27 #include "mythexp.h"
28 #include "audiooutputsettings.h"
29 
31 
33 {
34 public:
35 
37  : m_in(in), m_out(out) {}
38  virtual ~AudioConvert();
48  int Process(void* out, const void* in, int bytes, bool noclip = false);
49  AudioFormat Out(void) { return m_out; }
50  AudioFormat In(void) { return m_in; }
51 
52  bool operator==(AudioConvert& rhs) const
53  { return m_in == rhs.m_in && m_out == rhs.m_out; }
54  bool operator!=(AudioConvert& rhs) const
55  { return m_in != rhs.m_in || m_out != rhs.m_out; }
56 
57  void DeinterleaveSamples(int channels,
58  uint8_t* output, const uint8_t* input,
59  int data_size);
60  void InterleaveSamples(int channels,
61  uint8_t* output, const uint8_t* const* input,
62  int data_size);
63  void InterleaveSamples(int channels,
64  uint8_t* output, const uint8_t* input,
65  int data_size);
66 
67  // static utilities
68  static int toFloat(AudioFormat format, void* out, const void* in, int bytes);
69  static int fromFloat(AudioFormat format, void* out, const void* in, int bytes);
70  static void MonoToStereo(void* dst, const void* src, int samples);
71  static void DeinterleaveSamples(AudioFormat format, int channels,
72  uint8_t* output, const uint8_t* input,
73  int data_size);
74  static void InterleaveSamples(AudioFormat format, int channels,
75  uint8_t* output, const uint8_t* const* input,
76  int data_size);
77  static void InterleaveSamples(AudioFormat format, int channels,
78  uint8_t* output, const uint8_t* input,
79  int data_size);
80 private:
81  AudioConvertInternal* m_ctx {nullptr};
83 };
84 
85 #endif /* defined(__MythXCode__audioconvert__) */
static uint64_t samples[4]
Definition: element.c:45
#define MPUBLIC
Definition: mythexp.h:10
bool operator==(AudioConvert &rhs) const
Definition: audioconvert.h:52
AudioConvert(AudioFormat in, AudioFormat out)
Definition: audioconvert.h:36
AudioFormat Out(void)
Definition: audioconvert.h:49
AudioFormat m_out
Definition: audioconvert.h:82
AudioFormat m_in
Definition: audioconvert.h:82
AudioFormat In(void)
Definition: audioconvert.h:50
bool operator!=(AudioConvert &rhs) const
Definition: audioconvert.h:54
#define output