Blame include/local.h

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/*
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 *  ALSA lib - local header file
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 *  Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
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 *
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 *
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 *   This library is free software; you can redistribute it and/or modify
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 *   it under the terms of the GNU Lesser General Public License as
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 *   published by the Free Software Foundation; either version 2.1 of
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 *   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 Lesser 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
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 *   License along with this library; if not, write to the Free Software
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 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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 *
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 */
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#ifndef __LOCAL_H
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#define __LOCAL_H
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#include "config.h"
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <assert.h>
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#ifdef HAVE_ENDIAN_H
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#include <endian.h>
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#elif defined(HAVE_SYS_ENDIAN_H)
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#include <sys/endian.h>
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#ifndef __BYTE_ORDER
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#define __BYTE_ORDER BYTE_ORDER
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#endif
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#ifndef __LITTLE_ENDIAN
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#define __LITTLE_ENDIAN LITTLE_ENDIAN
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#endif
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#ifndef __BIG_ENDIAN
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#define __BIG_ENDIAN BIG_ENDIAN
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#endif
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#else
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#error Header defining endianness not defined
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#endif
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#include <stdarg.h>
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#include <poll.h>
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#include <sys/types.h>
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#include <errno.h>
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#if defined(__linux__)
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#include <linux/types.h>
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#include <linux/ioctl.h>
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#else
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#include "type_compat.h"
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#endif
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#ifdef SUPPORT_RESMGR
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#include <resmgr.h>
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#endif
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#ifdef HAVE_LIBDL
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#include <dlfcn.h>
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#else
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#define RTLD_NOW	0
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#endif
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define SND_LITTLE_ENDIAN
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#define SNDRV_LITTLE_ENDIAN
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#elif __BYTE_ORDER == __BIG_ENDIAN
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#define SND_BIG_ENDIAN
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#define SNDRV_BIG_ENDIAN
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#else
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#error "Unsupported endian..."
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#endif
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#define _snd_config_iterator list_head
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#define _snd_interval snd_interval
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#define _snd_pcm_info snd_pcm_info
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#define _snd_pcm_hw_params snd_pcm_hw_params
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#define _snd_pcm_sw_params snd_pcm_sw_params
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#define _snd_pcm_status snd_pcm_status
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#define _snd_ctl_card_info snd_ctl_card_info
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#define _snd_ctl_elem_id snd_ctl_elem_id
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#define _snd_ctl_elem_list snd_ctl_elem_list
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#define _snd_ctl_elem_info snd_ctl_elem_info
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#define _snd_ctl_elem_value snd_ctl_elem_value
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#define _snd_ctl_event snd_ctl_event
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#define _snd_rawmidi_info snd_rawmidi_info
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#define _snd_rawmidi_params snd_rawmidi_params
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#define _snd_rawmidi_status snd_rawmidi_status
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#define _snd_hwdep_info snd_hwdep_info
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#define _snd_hwdep_dsp_status snd_hwdep_dsp_status
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#define _snd_hwdep_dsp_image snd_hwdep_dsp_image
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#define _snd_seq_queue_tempo snd_seq_queue_tempo
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#define _snd_seq_client_info snd_seq_client_info
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#define _snd_seq_port_info snd_seq_port_info
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#define _snd_seq_system_info snd_seq_system_info
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#define _snd_seq_queue_info snd_seq_queue_info
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#define _snd_seq_queue_status snd_seq_queue_status
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#define _snd_seq_queue_timer snd_seq_queue_timer
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#define _snd_seq_port_subscribe snd_seq_port_subscribe
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#define _snd_seq_query_subscribe snd_seq_query_subs
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#define _snd_seq_client_pool snd_seq_client_pool
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#define _snd_seq_remove_events snd_seq_remove_events
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#define _snd_timer_id snd_timer_id
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#define _snd_timer_ginfo snd_timer_ginfo
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#define _snd_timer_gparams snd_timer_gparams
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#define _snd_timer_gstatus snd_timer_gstatus
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#define _snd_timer_select snd_timer_select
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#define _snd_timer_info snd_timer_info
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#define _snd_timer_params snd_timer_params
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#define _snd_timer_status snd_timer_status
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#define ALSA_LIBRARY_BUILD
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/* rename some types for avoiding conflicts with alsalib's definitions */
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#define snd_aes_iec958		sndrv_aes_iec958
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#define snd_pcm_uframes_t	sndrv_pcm_uframes_t
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#define snd_pcm_sframes_t	sndrv_pcm_sframes_t
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#define snd_pcm_access_t	sndrv_pcm_access_t
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#define snd_pcm_format_t	sndrv_pcm_format_t
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#define snd_pcm_subformat_t	sndrv_pcm_subformat_t
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#define snd_pcm_state_t		sndrv_pcm_state_t
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#define snd_interval		sndrv_interval
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#define snd_mask		sndrv_mask
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#define snd_ctl_elem_type_t	sndrv_ctl_elem_type_t
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#define snd_ctl_elem_iface_t	sndrv_ctl_elem_iface_t
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#define snd_ctl_tlv		sndrv_ctl_tlv
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/* kill and replace kernel-specific types */
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#ifndef __user
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#define __user
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#endif
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#ifndef __force
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#define __force
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#endif
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#include <sound/asound.h>
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/* take back superfluous renames; some can be kept as is */
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#undef snd_aes_iec958
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#undef snd_pcm_uframes_t
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#undef snd_pcm_sframes_t
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#undef snd_pcm_access_t
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#undef snd_pcm_format_t
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#undef snd_pcm_subformat_t
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#undef snd_pcm_state_t
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#undef snd_ctl_elem_type_t
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#undef snd_ctl_elem_iface_t
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#include "asoundef.h"
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#include "alsa-symbols.h"
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#include "version.h"
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#include "global.h"
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#include "input.h"
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#include "output.h"
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#include "error.h"
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#include "conf.h"
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#include "pcm.h"
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#include "pcm_plugin.h"
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#include "rawmidi.h"
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#include "timer.h"
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#include "hwdep.h"
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#include "control.h"
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#include "mixer.h"
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#include "seq_event.h"
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#include "seq.h"
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/* rename some types for avoiding conflicts with alsalib's definitions */
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#define snd_seq_addr		sndrv_seq_addr
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#define snd_seq_tick_time_t	sndrv_seq_tick_time_t
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#define snd_seq_real_time	sndrv_seq_real_time
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#define snd_seq_timestamp	sndrv_seq_timestamp
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#define snd_seq_event_type_t	sndrv_seq_event_type_t
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#define snd_seq_event		sndrv_seq_event
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#define snd_seq_connect		sndrv_seq_connect
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#define snd_seq_ev_note		sndrv_seq_ev_note
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#define snd_seq_ev_ctrl		sndrv_seq_ev_ctrl
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#define snd_seq_ev_raw8		sndrv_seq_ev_raw8
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#define snd_seq_ev_raw32	sndrv_seq_ev_raw32
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#define snd_seq_ev_ext		sndrv_seq_ev_ext
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#define snd_seq_result		sndrv_seq_result
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#define snd_seq_queue_skew	sndrv_seq_queue_skew
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#define snd_seq_ev_queue_control	sndrv_seq_ev_queue_control
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#define snd_seq_client_t	sndrv_seq_client_t
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#define snd_seq_client_type_t	sndrv_seq_client_type_t
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#include <sound/asequencer.h>
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/* take back some renames */
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#undef snd_seq_client_t
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#undef snd_seq_client_type_t
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#include "seqmid.h"
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#include "seq_midi_event.h"
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#include "list.h"
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struct _snd_async_handler {
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	enum {
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		SND_ASYNC_HANDLER_GENERIC,
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		SND_ASYNC_HANDLER_CTL,
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		SND_ASYNC_HANDLER_PCM,
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		SND_ASYNC_HANDLER_TIMER,
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	} type;
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	int fd;
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	union {
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		snd_ctl_t *ctl;
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		snd_pcm_t *pcm;
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		snd_timer_t *timer;
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	} u;
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	snd_async_callback_t callback;
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	void *private_data;
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	struct list_head glist;
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	struct list_head hlist;
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};
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typedef enum _snd_set_mode {
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	SND_CHANGE,
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	SND_TRY,
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	SND_TEST,
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} snd_set_mode_t;
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size_t page_align(size_t size);
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size_t page_size(void);
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size_t page_ptr(size_t object_offset, size_t object_size, size_t *offset, size_t *mmap_offset);
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int safe_strtol(const char *str, long *val);
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int snd_send_fd(int sock, void *data, size_t len, int fd);
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int snd_receive_fd(int sock, void *data, size_t len, int *fd);
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size_t snd_strlcpy(char *dst, const char *src, size_t size);
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/*
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 * error messages
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 */
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#ifndef NDEBUG
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#define CHECK_SANITY(x) x
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extern snd_lib_error_handler_t snd_err_msg;
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#define SNDMSG(args...) snd_err_msg(__FILE__, __LINE__, __func__, 0, ##args)
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#define SYSMSG(args...) snd_err_msg(__FILE__, __LINE__, __func__, errno, ##args)
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#else
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#define CHECK_SANITY(x) 0 /* not evaluated */
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#define SNDMSG(args...) /* nop */
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#define SYSMSG(args...) /* nop */
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#endif
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/*
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 */
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#define HAVE_GNU_LD
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#define HAVE_ELF
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#define HAVE_ASM_PREVIOUS_DIRECTIVE
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/* Stolen from libc-symbols.h in GNU glibc */
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/* When a reference to SYMBOL is encountered, the linker will emit a
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   warning message MSG.  */
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#define ASM_NAME(name) __SYMBOL_PREFIX name
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#ifdef HAVE_GNU_LD
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# ifdef HAVE_ELF
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/* We want the .gnu.warning.SYMBOL section to be unallocated.  */
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#  ifdef HAVE_ASM_PREVIOUS_DIRECTIVE
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#   define __make_section_unallocated(section_string)	\
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  asm (".section " section_string "\n\t.previous");
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#  elif defined HAVE_ASM_POPSECTION_DIRECTIVE
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#   define __make_section_unallocated(section_string)	\
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  asm (".pushsection " section_string "\n\t.popsection");
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#  else
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#   define __make_section_unallocated(section_string)
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#  endif
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/* Tacking on "\n\t#" to the section name makes gcc put it's bogus
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   section attributes on what looks like a comment to the assembler.  */
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#  ifdef HAVE_SECTION_QUOTES
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#   define link_warning(symbol, msg) \
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  __make_section_unallocated (".gnu.warning." ASM_NAME(#symbol)) \
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  static const char __evoke_link_warning_##symbol[]	\
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    __attribute__ ((section (".gnu.warning." ASM_NAME(#symbol) "\"\n\t#\""))) = msg;
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#  else
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#   define link_warning(symbol, msg) \
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  __make_section_unallocated (".gnu.warning." ASM_NAME(#symbol)) \
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  static const char __evoke_link_warning_##symbol[]	\
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    __attribute__ ((section (".gnu.warning." ASM_NAME(#symbol) "\n\t#"))) = msg;
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#  endif
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# else
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#  define link_warning(symbol, msg)		\
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  asm (".stabs \"" msg "\",30,0,0,0\n\t"	\
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       ".stabs \"" ASM_NAME(#symbol) "\",1,0,0,0\n");
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# endif
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#else
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/* We will never be heard; they will all die horribly.  */
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# define link_warning(symbol, msg)
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#endif
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static inline int snd_open_device(const char *filename, int fmode)
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{
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	int fd;
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#ifdef O_CLOEXEC
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	fmode |= O_CLOEXEC;
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#endif
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	fd = open(filename, fmode);
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/* open with resmgr */
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#ifdef SUPPORT_RESMGR
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	if (fd < 0) {
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		if (errno == EAGAIN || errno == EBUSY)
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			return fd;
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		if (! access(filename, F_OK))
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			fd = rsm_open_device(filename, fmode);
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	}
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#endif
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#ifndef O_CLOEXEC
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	if (fd >= 0)
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		fcntl(fd, F_SETFD, FD_CLOEXEC);
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#endif
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	return fd;
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}
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/* make local functions really local */
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#define snd_dlobj_cache_get \
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	snd1_dlobj_cache_get
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#define snd_dlobj_cache_get2 \
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	snd1_dlobj_cache_get2
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#define snd_dlobj_cache_put \
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	snd1_dlobj_cache_put
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#define snd_dlobj_cache_cleanup \
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	snd1_dlobj_cache_cleanup
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#define snd_config_set_hop \
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	snd1_config_set_hop
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#define snd_config_check_hop \
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	snd1_config_check_hop
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#define snd_config_search_alias_hooks \
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	snd1_config_search_alias_hooks
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/* dlobj cache */
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void *snd_dlobj_cache_get(const char *lib, const char *name, const char *version, int verbose);
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void *snd_dlobj_cache_get2(const char *lib, const char *name, const char *version, int verbose);
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int snd_dlobj_cache_put(void *open_func);
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void snd_dlobj_cache_cleanup(void);
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/* for recursive checks */
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void snd_config_set_hop(snd_config_t *conf, int hop);
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int snd_config_check_hop(snd_config_t *conf);
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#define SND_CONF_MAX_HOPS	64
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int snd_config_search_alias_hooks(snd_config_t *config,
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                                  const char *base, const char *key,
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				  snd_config_t **result);
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int _snd_conf_generic_id(const char *id);
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int _snd_config_load_with_include(snd_config_t *config, snd_input_t *in,
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				  int override, const char * const *default_include_path);
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/* convenience macros */
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
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#define container_of(ptr, type, member) ({                      \
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	 const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
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	(type *)( (char *)__mptr - offsetof(type,member) );})
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#ifdef INTERNAL
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void *INTERNAL(snd_dlopen)(const char *name, int mode, char *errbuf, size_t errbuflen);
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#endif
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#endif