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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
137 lines
4.8 KiB
C
137 lines
4.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
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/*
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* audio.h
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*
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* Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>
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* & Marcus Metzler <marcus@convergence.de>
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* for convergence integrated media GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Lesser Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (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 Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef _DVBAUDIO_H_
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#define _DVBAUDIO_H_
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#include <linux/types.h>
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typedef enum {
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AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */
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AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */
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} audio_stream_source_t;
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typedef enum {
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AUDIO_STOPPED, /* Device is stopped */
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AUDIO_PLAYING, /* Device is currently playing */
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AUDIO_PAUSED /* Device is paused */
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} audio_play_state_t;
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typedef enum {
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AUDIO_STEREO,
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AUDIO_MONO_LEFT,
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AUDIO_MONO_RIGHT,
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AUDIO_MONO,
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AUDIO_STEREO_SWAPPED
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} audio_channel_select_t;
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typedef struct audio_mixer {
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unsigned int volume_left;
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unsigned int volume_right;
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// what else do we need? bass, pass-through, ...
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} audio_mixer_t;
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typedef struct audio_status {
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int AV_sync_state; /* sync audio and video? */
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int mute_state; /* audio is muted */
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audio_play_state_t play_state; /* current playback state */
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audio_stream_source_t stream_source; /* current stream source */
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audio_channel_select_t channel_select; /* currently selected channel */
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int bypass_mode; /* pass on audio data to */
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audio_mixer_t mixer_state; /* current mixer state */
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} audio_status_t; /* separate decoder hardware */
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typedef
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struct audio_karaoke { /* if Vocal1 or Vocal2 are non-zero, they get mixed */
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int vocal1; /* into left and right t at 70% each */
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int vocal2; /* if both, Vocal1 and Vocal2 are non-zero, Vocal1 gets*/
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int melody; /* mixed into the left channel and */
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/* Vocal2 into the right channel at 100% each. */
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/* if Melody is non-zero, the melody channel gets mixed*/
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} audio_karaoke_t; /* into left and right */
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typedef __u16 audio_attributes_t;
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/* bits: descr. */
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/* 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, */
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/* 12 multichannel extension */
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/* 11-10 audio type (0=not spec, 1=language included) */
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/* 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) */
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/* 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, */
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/* 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) */
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/* 2- 0 number of audio channels (n+1 channels) */
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/* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */
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#define AUDIO_CAP_DTS 1
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#define AUDIO_CAP_LPCM 2
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#define AUDIO_CAP_MP1 4
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#define AUDIO_CAP_MP2 8
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#define AUDIO_CAP_MP3 16
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#define AUDIO_CAP_AAC 32
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#define AUDIO_CAP_OGG 64
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#define AUDIO_CAP_SDDS 128
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#define AUDIO_CAP_AC3 256
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#define AUDIO_STOP _IO('o', 1)
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#define AUDIO_PLAY _IO('o', 2)
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#define AUDIO_PAUSE _IO('o', 3)
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#define AUDIO_CONTINUE _IO('o', 4)
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#define AUDIO_SELECT_SOURCE _IO('o', 5)
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#define AUDIO_SET_MUTE _IO('o', 6)
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#define AUDIO_SET_AV_SYNC _IO('o', 7)
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#define AUDIO_SET_BYPASS_MODE _IO('o', 8)
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#define AUDIO_CHANNEL_SELECT _IO('o', 9)
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#define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t)
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#define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int)
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#define AUDIO_CLEAR_BUFFER _IO('o', 12)
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#define AUDIO_SET_ID _IO('o', 13)
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#define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t)
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#define AUDIO_SET_STREAMTYPE _IO('o', 15)
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#define AUDIO_SET_EXT_ID _IO('o', 16)
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#define AUDIO_SET_ATTRIBUTES _IOW('o', 17, audio_attributes_t)
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#define AUDIO_SET_KARAOKE _IOW('o', 18, audio_karaoke_t)
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/**
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* AUDIO_GET_PTS
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*
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* Read the 33 bit presentation time stamp as defined
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* in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
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*
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* The PTS should belong to the currently played
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* frame if possible, but may also be a value close to it
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* like the PTS of the last decoded frame or the last PTS
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* extracted by the PES parser.
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*/
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#define AUDIO_GET_PTS _IOR('o', 19, __u64)
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#define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20)
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#endif /* _DVBAUDIO_H_ */
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