100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
|
|
/*
|
|
* audio.h
|
|
*
|
|
* Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>
|
|
* & Marcus Metzler <marcus@convergence.de>
|
|
* for convergence integrated media GmbH
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Lesser Public License
|
|
* as published by the Free Software Foundation; either version 2.1
|
|
* 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 Lesser 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef _DVBAUDIO_H_
|
|
#define _DVBAUDIO_H_
|
|
|
|
#include <linux/types.h>
|
|
|
|
typedef enum {
|
|
AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */
|
|
AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */
|
|
} audio_stream_source_t;
|
|
|
|
|
|
typedef enum {
|
|
AUDIO_STOPPED, /* Device is stopped */
|
|
AUDIO_PLAYING, /* Device is currently playing */
|
|
AUDIO_PAUSED /* Device is paused */
|
|
} audio_play_state_t;
|
|
|
|
|
|
typedef enum {
|
|
AUDIO_STEREO,
|
|
AUDIO_MONO_LEFT,
|
|
AUDIO_MONO_RIGHT,
|
|
AUDIO_MONO,
|
|
AUDIO_STEREO_SWAPPED
|
|
} audio_channel_select_t;
|
|
|
|
|
|
typedef struct audio_mixer {
|
|
unsigned int volume_left;
|
|
unsigned int volume_right;
|
|
// what else do we need? bass, pass-through, ...
|
|
} audio_mixer_t;
|
|
|
|
|
|
typedef struct audio_status {
|
|
int AV_sync_state; /* sync audio and video? */
|
|
int mute_state; /* audio is muted */
|
|
audio_play_state_t play_state; /* current playback state */
|
|
audio_stream_source_t stream_source; /* current stream source */
|
|
audio_channel_select_t channel_select; /* currently selected channel */
|
|
int bypass_mode; /* pass on audio data to */
|
|
audio_mixer_t mixer_state; /* current mixer state */
|
|
} audio_status_t; /* separate decoder hardware */
|
|
|
|
|
|
/* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */
|
|
#define AUDIO_CAP_DTS 1
|
|
#define AUDIO_CAP_LPCM 2
|
|
#define AUDIO_CAP_MP1 4
|
|
#define AUDIO_CAP_MP2 8
|
|
#define AUDIO_CAP_MP3 16
|
|
#define AUDIO_CAP_AAC 32
|
|
#define AUDIO_CAP_OGG 64
|
|
#define AUDIO_CAP_SDDS 128
|
|
#define AUDIO_CAP_AC3 256
|
|
|
|
#define AUDIO_STOP _IO('o', 1)
|
|
#define AUDIO_PLAY _IO('o', 2)
|
|
#define AUDIO_PAUSE _IO('o', 3)
|
|
#define AUDIO_CONTINUE _IO('o', 4)
|
|
#define AUDIO_SELECT_SOURCE _IO('o', 5)
|
|
#define AUDIO_SET_MUTE _IO('o', 6)
|
|
#define AUDIO_SET_AV_SYNC _IO('o', 7)
|
|
#define AUDIO_SET_BYPASS_MODE _IO('o', 8)
|
|
#define AUDIO_CHANNEL_SELECT _IO('o', 9)
|
|
#define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t)
|
|
|
|
#define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int)
|
|
#define AUDIO_CLEAR_BUFFER _IO('o', 12)
|
|
#define AUDIO_SET_ID _IO('o', 13)
|
|
#define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t)
|
|
#define AUDIO_SET_STREAMTYPE _IO('o', 15)
|
|
#define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20)
|
|
|
|
#endif /* _DVBAUDIO_H_ */
|