1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/*
Title: AUDDSpeakerChannel implementation
About: Purpose
Implementation of the AUDDSpeakerChannel functions.
*/
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "AUDDSpeakerChannel.h"
#include <utility/trace.h>
//------------------------------------------------------------------------------
// Callbacks
//------------------------------------------------------------------------------
/*
Function: AUDDSpeakerChannel_MuteChanged
Callback triggered when the mute status of a channel changes. This is
a default implementation which does nothing and must be overriden.
Parameters:
channel - Pointer to a AUDDSpeakerChannel instance.
muted - New mute status.
*/
//__attribute__ ((weak)) void AUDDSpeakerChannel_MuteChanged(
// AUDDSpeakerChannel *channel,
// unsigned char muted)
//{
// TRACE_DEBUG("MuteChanged(%d, %d) ", channel->number, muted);
//}
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
/// Initializes the member variables of an AUDDSpeakerChannel object to the
/// given values.
/// \param channel Pointer to an AUDDSpeakerChannel instance.
/// \param number Channel number in the audio function.
/// \param muted Indicates if the channel is muted.
//------------------------------------------------------------------------------
void AUDDSpeakerChannel_Initialize(AUDDSpeakerChannel *channel,
unsigned char number,
unsigned char muted)
{
channel->number = number;
channel->muted = muted;
}
//------------------------------------------------------------------------------
/// Indicates the number of a channel.
/// \param channel Pointer to an AUDDSpeakerChannel instance.
/// \return Channel number.
//------------------------------------------------------------------------------
unsigned char AUDDSpeakerChannel_GetNumber(const AUDDSpeakerChannel *channel)
{
return channel->number;
}
//------------------------------------------------------------------------------
/// Mutes the given channel and triggers the MuteChanged callback if
/// necessary.
/// \param channel Pointer to an AUDDSpeakerChannelInstance.
//------------------------------------------------------------------------------
void AUDDSpeakerChannel_Mute(AUDDSpeakerChannel *channel)
{
if (!channel->muted) {
channel->muted = 1;
AUDDSpeakerChannel_MuteChanged(channel, 1);
}
}
//------------------------------------------------------------------------------
/// Unmutes the given channel and triggers the MuteChanged callback if
/// necessary.
/// \param channel Pointer to an AUDDSpeakerChannelInstance.
//------------------------------------------------------------------------------
void AUDDSpeakerChannel_Unmute(AUDDSpeakerChannel *channel)
{
if (channel->muted) {
channel->muted = 0;
AUDDSpeakerChannel_MuteChanged(channel, 0);
}
}
//------------------------------------------------------------------------------
/// Indicates if the given channel is currently muted or not.
/// \param channel Pointer an AUDDSpeakerChannel instance.
/// \return 1 if the channel is muted; otherwise 0.
//------------------------------------------------------------------------------
unsigned char AUDDSpeakerChannel_IsMuted(const AUDDSpeakerChannel *channel)
{
return channel->muted;
}
|
