mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2026-05-17 09:58:06 +02:00
557c429510
- As discussed on alsa-devel it's probably better to initialize the buffer size first, followed by the period size. If that fails try the other way round. If that fails try to configure only buffer size. If that fails try to configure only period size. Finally, try to configure neither. - Don't require integral periods anymore. Both of these changes should help improving compatibility with various weirder sound devices, such as TV cards.
144 lines
5.9 KiB
C
144 lines
5.9 KiB
C
#ifndef fooalsautilhfoo
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#define fooalsautilhfoo
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio 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 published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#include <asoundlib.h>
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#include <pulse/sample.h>
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#include <pulse/volume.h>
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#include <pulse/mainloop-api.h>
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#include <pulse/channelmap.h>
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#include <pulse/proplist.h>
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#include <pulse/volume.h>
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#include <pulsecore/llist.h>
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#include <pulsecore/rtpoll.h>
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#include <pulsecore/core.h>
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#include <pulsecore/log.h>
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#include "alsa-mixer.h"
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int pa_alsa_set_hw_params(
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snd_pcm_t *pcm_handle,
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pa_sample_spec *ss, /* modified at return */
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snd_pcm_uframes_t *period_size, /* modified at return */
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snd_pcm_uframes_t *buffer_size, /* modified at return */
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snd_pcm_uframes_t tsched_size,
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pa_bool_t *use_mmap, /* modified at return */
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pa_bool_t *use_tsched, /* modified at return */
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pa_bool_t require_exact_channel_number);
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int pa_alsa_set_sw_params(
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snd_pcm_t *pcm,
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snd_pcm_uframes_t avail_min);
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/* Picks a working mapping from the profile set based on the specified ss/map */
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snd_pcm_t *pa_alsa_open_by_device_id_auto(
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const char *dev_id,
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char **dev, /* modified at return */
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pa_sample_spec *ss, /* modified at return */
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pa_channel_map* map, /* modified at return */
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int mode,
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snd_pcm_uframes_t *period_size, /* modified at return */
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snd_pcm_uframes_t *buffer_size, /* modified at return */
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snd_pcm_uframes_t tsched_size,
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pa_bool_t *use_mmap, /* modified at return */
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pa_bool_t *use_tsched, /* modified at return */
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pa_alsa_profile_set *ps,
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pa_alsa_mapping **mapping); /* modified at return */
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/* Uses the specified mapping */
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snd_pcm_t *pa_alsa_open_by_device_id_mapping(
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const char *dev_id,
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char **dev, /* modified at return */
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pa_sample_spec *ss, /* modified at return */
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pa_channel_map* map, /* modified at return */
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int mode,
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snd_pcm_uframes_t *period_size, /* modified at return */
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snd_pcm_uframes_t *buffer_size, /* modified at return */
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snd_pcm_uframes_t tsched_size,
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pa_bool_t *use_mmap, /* modified at return */
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pa_bool_t *use_tsched, /* modified at return */
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pa_alsa_mapping *mapping);
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/* Opens the explicit ALSA device */
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snd_pcm_t *pa_alsa_open_by_device_string(
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const char *dir,
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char **dev, /* modified at return */
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pa_sample_spec *ss, /* modified at return */
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pa_channel_map* map, /* modified at return */
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int mode,
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snd_pcm_uframes_t *period_size, /* modified at return */
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snd_pcm_uframes_t *buffer_size, /* modified at return */
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snd_pcm_uframes_t tsched_size,
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pa_bool_t *use_mmap, /* modified at return */
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pa_bool_t *use_tsched, /* modified at return */
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pa_bool_t require_exact_channel_number);
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/* Opens the explicit ALSA device with a fallback list */
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snd_pcm_t *pa_alsa_open_by_template(
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char **template,
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const char *dev_id,
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char **dev, /* modified at return */
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pa_sample_spec *ss, /* modified at return */
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pa_channel_map* map, /* modified at return */
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int mode,
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snd_pcm_uframes_t *period_size, /* modified at return */
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snd_pcm_uframes_t *buffer_size, /* modified at return */
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snd_pcm_uframes_t tsched_size,
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pa_bool_t *use_mmap, /* modified at return */
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pa_bool_t *use_tsched, /* modified at return */
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pa_bool_t require_exact_channel_number);
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void pa_alsa_dump(pa_log_level_t level, snd_pcm_t *pcm);
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void pa_alsa_dump_status(snd_pcm_t *pcm);
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void pa_alsa_refcnt_inc(void);
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void pa_alsa_refcnt_dec(void);
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void pa_alsa_init_proplist_pcm_info(pa_core *c, pa_proplist *p, snd_pcm_info_t *pcm_info);
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void pa_alsa_init_proplist_card(pa_core *c, pa_proplist *p, int card);
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void pa_alsa_init_proplist_pcm(pa_core *c, pa_proplist *p, snd_pcm_t *pcm);
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void pa_alsa_init_proplist_ctl(pa_proplist *p, const char *name);
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pa_bool_t pa_alsa_init_description(pa_proplist *p);
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int pa_alsa_recover_from_poll(snd_pcm_t *pcm, int revents);
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pa_rtpoll_item* pa_alsa_build_pollfd(snd_pcm_t *pcm, pa_rtpoll *rtpoll);
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snd_pcm_sframes_t pa_alsa_safe_avail(snd_pcm_t *pcm, size_t hwbuf_size, const pa_sample_spec *ss);
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int pa_alsa_safe_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delay, size_t hwbuf_size, const pa_sample_spec *ss);
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int pa_alsa_safe_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames, size_t hwbuf_size, const pa_sample_spec *ss);
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char *pa_alsa_get_driver_name(int card);
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char *pa_alsa_get_driver_name_by_pcm(snd_pcm_t *pcm);
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char *pa_alsa_get_reserve_name(const char *device);
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pa_bool_t pa_alsa_pcm_is_hw(snd_pcm_t *pcm);
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pa_bool_t pa_alsa_pcm_is_modem(snd_pcm_t *pcm);
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const char* pa_alsa_strerror(int errnum);
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#endif
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