mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-10 00:35:42 +01:00
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
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/*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include "atypes.h"
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#define E_MIXER_SUCCESS 1
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#define E_MIXER_NEED_CLOSE 2
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#define E_MIXER_RECORD SND_MIXER_FLG_RECORD
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#define E_MIXER_MUTE_LEFT SND_MIXER_FLG_MUTE_LEFT
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#define E_MIXER_MUTE_RIGHT SND_MIXER_FLG_MUTE_RIGHT
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#define E_MIXER_MUTE SND_MIXER_FLG_MUTE
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class Mixer
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{
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public:
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Mixer(int card = 0, int device = 0);
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~Mixer();
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bool Init();
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bool Open(int card, int device);
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void Close();
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void DeviceSet(int32 device) {
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current_device = device;
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Update();
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}
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char* Name(int32 device);
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char* Name();
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int32 NumDevices() { return nr_devices; }
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void Update();
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void DeviceRead(int32 device, int32 *left, int32 *right, int32 *flag);
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void DeviceWrite(int32 device, int32 left, int32 right, int32 flag);
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void Read(int32 *left, int32 *right, int32 *flags) {
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DeviceRead(current_device, left, right, flags);
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}
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void Read_dB(int32 *left_dB, int32 *right_dB) {
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*left_dB = ch_data.left_dB;
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*right_dB = ch_data.right_dB;
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}
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void Write(int32 left, int32 right, int32 flags) {
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DeviceWrite(current_device, left, right, flags);
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}
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int Left() { return ch_data.left; }
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int Right() { return ch_data.right; }
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Mixer& operator[](int32 device) {
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DeviceSet(device);
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return (*this);
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}
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private:
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snd_mixer_info_t info;
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snd_mixer_channel_t ch_data;
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snd_mixer_channel_info_t ch_info;
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void * mixer_handle;
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int32 mixer_status;
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int32 current_device;
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int32 nr_devices;
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};
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