285 lines
8.1 KiB
C
285 lines
8.1 KiB
C
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <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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#include <endian.h>
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#include <stdarg.h>
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#include <sys/poll.h>
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#include <errno.h>
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#include "config.h"
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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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#define _snd_config_iterator list_head
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#define _snd_interval sndrv_interval
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#define _snd_pcm_info sndrv_pcm_info
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#define _snd_pcm_hw_params sndrv_pcm_hw_params
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#define _snd_pcm_sw_params sndrv_pcm_sw_params
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#define _snd_pcm_status sndrv_pcm_status
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#define _snd_ctl_card_info sndrv_ctl_card_info
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#define _snd_ctl_elem_id sndrv_ctl_elem_id
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#define _snd_ctl_elem_list sndrv_ctl_elem_list
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#define _snd_ctl_elem_info sndrv_ctl_elem_info
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#define _snd_ctl_elem_value sndrv_ctl_elem_value
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#define _snd_ctl_event sndrv_ctl_event
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#define _snd_rawmidi_info sndrv_rawmidi_info
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#define _snd_rawmidi_params sndrv_rawmidi_params
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#define _snd_rawmidi_status sndrv_rawmidi_status
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#define _snd_hwdep_info sndrv_hwdep_info
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#define _snd_hwdep_dsp_status sndrv_hwdep_dsp_status
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#define _snd_hwdep_dsp_image sndrv_hwdep_dsp_image
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#define _snd_seq_queue_tempo sndrv_seq_queue_tempo
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#define _snd_seq_client_info sndrv_seq_client_info
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#define _snd_seq_port_info sndrv_seq_port_info
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#define _snd_seq_system_info sndrv_seq_system_info
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#define _snd_seq_queue_info sndrv_seq_queue_info
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#define _snd_seq_queue_status sndrv_seq_queue_status
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#define _snd_seq_queue_timer sndrv_seq_queue_timer
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#define _snd_seq_port_subscribe sndrv_seq_port_subscribe
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#define _snd_seq_query_subscribe sndrv_seq_query_subs
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#define _snd_seq_client_pool sndrv_seq_client_pool
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#define _snd_seq_remove_events sndrv_seq_remove_events
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#define sndrv_seq_addr snd_seq_addr
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#define sndrv_seq_tick_time_t snd_seq_tick_time_t
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#define sndrv_seq_real_time snd_seq_real_time
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#define sndrv_seq_timestamp snd_seq_timestamp
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#define sndrv_seq_event snd_seq_event
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#if 0
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typedef struct sndrv_seq_addr snd_seq_addr_t;
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#define snd_seq_tick_time_t sndrv_seq_tick_time_t
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typedef struct sndrv_seq_real_time snd_seq_real_time_t;
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typedef union sndrv_seq_timestamp snd_seq_timestamp_t;
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typedef struct sndrv_seq_event snd_seq_event_t;
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#endif
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#define _snd_timer_id sndrv_timer_id
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#define _snd_timer_ginfo sndrv_timer_ginfo
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#define _snd_timer_gparams sndrv_timer_gparams
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#define _snd_timer_gstatus sndrv_timer_gstatus
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#define _snd_timer_select sndrv_timer_select
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#define _snd_timer_info sndrv_timer_info
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#define _snd_timer_params sndrv_timer_params
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#define _snd_timer_status sndrv_timer_status
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#define ALSA_LIBRARY_BUILD
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#include <sound/asound.h>
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#include <sound/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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#include <sound/asequencer.h>
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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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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define SND_LITTLE_ENDIAN
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#endif
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#if __BYTE_ORDER == __BIG_ENDIAN
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#define SND_BIG_ENDIAN
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#endif
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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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/*
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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__, __FUNCTION__, 0, ##args)
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#define SYSMSG(args...) snd_err_msg(__FILE__, __LINE__, __FUNCTION__, 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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if (fd >= 0)
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fcntl(fd, F_SETFD, FD_CLOEXEC);
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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_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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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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#endif
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