From 044ad7c3987460ede48ff27afd6bdb0ca05a0432 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Mon, 4 Jul 2011 20:52:54 +0200 Subject: import at91lib from at91lib_20100901_softpack_1_9_v_1_0_svn_v15011 it's sad to see that atmel doesn't publish their svn repo or has a centralized location or even puts proper version/release info into the library itself --- usb/device/audio-speaker/AUDDSpeakerChannel.c | 129 ++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 usb/device/audio-speaker/AUDDSpeakerChannel.c (limited to 'usb/device/audio-speaker/AUDDSpeakerChannel.c') diff --git a/usb/device/audio-speaker/AUDDSpeakerChannel.c b/usb/device/audio-speaker/AUDDSpeakerChannel.c new file mode 100644 index 0000000..30f39c5 --- /dev/null +++ b/usb/device/audio-speaker/AUDDSpeakerChannel.c @@ -0,0 +1,129 @@ +/* ---------------------------------------------------------------------------- + * 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 + +//------------------------------------------------------------------------------ +// 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; +} + -- cgit v1.2.3