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#ifndef __FWEELIN_AMIXER_H
#define __FWEELIN_AMIXER_H
/* Copyright 2004-2011 Jan Pekau
This file is part of Freewheeling.
Freewheeling is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
Freewheeling 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with Freewheeling. If not, see <http://www.gnu.org/licenses/>. */
/* This file contains code from amixer.c, ALSA's command line mixer utility:
*
* ALSA command line mixer utility
* Copyright (c) 1999-2000 by Jaroslav Kysela <perex@perex.cz>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <math.h>
#ifndef __MACOSX__
#include <alsa/asoundlib.h>
#endif
#include "fweelin_core.h"
class Fweelin;
/**
* Interface class for directly talking to the audio hardware (ALSA) mixer
*
* Taken almost verbatim from amixer.c in alsa-utils, with minor changes to fit
* Freewheeling.
*/
class HardwareMixerInterface {
public:
HardwareMixerInterface(Fweelin *app) : app(app), prev_hwid(-1) {};
#ifndef __MACOSX__
/*
* Set an ALSA Mixer control
*
* Parameters:
* the HW id (ie hw:0, hw:1, etc)
* the control numid (ie numid=5)
* and between 1 and 4 values.
*
* Returns zero on success.
*/
int ALSAMixerControlSet(int hwid, int numid, int val1, int val2 = -1, int val3 = -1, int val4 = -1);
private:
const char *control_type(snd_ctl_elem_info_t *info);
const char *control_access(snd_ctl_elem_info_t *info);
long get_integer(char **ptr, long min, long max);
long get_integer64(char **ptr, long long min, long long max);
int parse_control_id(const char *str, snd_ctl_elem_id_t *id);
const char *control_iface(snd_ctl_elem_id_t *id);
void show_control_id(snd_ctl_elem_id_t *id);
void print_spaces(unsigned int spaces);
void print_dB(long dB);
void decode_tlv(unsigned int spaces, unsigned int *tlv, unsigned int tlv_size);
int show_control(char *card, const char *space, snd_hctl_elem_t *elem,
int level);
int get_ctl_enum_item_index(snd_ctl_t *handle, snd_ctl_elem_info_t *info,
char **ptrp);
int cset(char *card, int argc, char *argv[], int roflag, int keep_handle, int debugflag);
#endif
Fweelin *app;
int prev_hwid; // Previous cset call, what was the hwid?
};
#endif
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