code.delx.au - pulseaudio/blob - src/modules/alsa/alsa-util.h

   1 #ifndef fooalsautilhfoo
   2 #define fooalsautilhfoo
   3
   4 /***
   5   This file is part of PulseAudio.
   6
   7   Copyright 2004-2006 Lennart Poettering
   8   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   9
  10   PulseAudio is free software; you can redistribute it and/or modify
  11   it under the terms of the GNU Lesser General Public License as published
  12   by the Free Software Foundation; either version 2.1 of the License,
  13   or (at your option) any later version.
  14
  15   PulseAudio is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with PulseAudio; if not, write to the Free Software
  22   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  23   USA.
  24 ***/
  25
  26 #include <asoundlib.h>
  27
  28 #include <pulse/sample.h>
  29 #include <pulse/volume.h>
  30 #include <pulse/mainloop-api.h>
  31 #include <pulse/channelmap.h>
  32 #include <pulse/proplist.h>
  33 #include <pulse/volume.h>
  34
  35 #include <pulsecore/llist.h>
  36 #include <pulsecore/rtpoll.h>
  37 #include <pulsecore/core.h>
  38 #include <pulsecore/log.h>
  39
  40 #include "alsa-mixer.h"
  41
  42 int pa_alsa_set_hw_params(
  43         snd_pcm_t *pcm_handle,
  44         pa_sample_spec *ss,                /* modified at return */
  45         snd_pcm_uframes_t *period_size,    /* modified at return */
  46         snd_pcm_uframes_t *buffer_size,    /* modified at return */
  47         snd_pcm_uframes_t tsched_size,
  48         pa_bool_t *use_mmap,               /* modified at return */
  49         pa_bool_t *use_tsched,             /* modified at return */
  50         pa_bool_t require_exact_channel_number);
  51
  52 int pa_alsa_set_sw_params(
  53         snd_pcm_t *pcm,
  54         snd_pcm_uframes_t avail_min);
  55
  56 /* Picks a working mapping from the profile set based on the specified ss/map */
  57 snd_pcm_t *pa_alsa_open_by_device_id_auto(
  58         const char *dev_id,
  59         char **dev,                       /* modified at return */
  60         pa_sample_spec *ss,               /* modified at return */
  61         pa_channel_map* map,              /* modified at return */
  62         int mode,
  63         snd_pcm_uframes_t *period_size,   /* modified at return */
  64         snd_pcm_uframes_t *buffer_size,   /* modified at return */
  65         snd_pcm_uframes_t tsched_size,
  66         pa_bool_t *use_mmap,              /* modified at return */
  67         pa_bool_t *use_tsched,            /* modified at return */
  68         pa_alsa_profile_set *ps,
  69         pa_alsa_mapping **mapping);       /* modified at return */
  70
  71 /* Uses the specified mapping */
  72 snd_pcm_t *pa_alsa_open_by_device_id_mapping(
  73         const char *dev_id,
  74         char **dev,                       /* modified at return */
  75         pa_sample_spec *ss,               /* modified at return */
  76         pa_channel_map* map,              /* modified at return */
  77         int mode,
  78         snd_pcm_uframes_t *period_size,   /* modified at return */
  79         snd_pcm_uframes_t *buffer_size,   /* modified at return */
  80         snd_pcm_uframes_t tsched_size,
  81         pa_bool_t *use_mmap,              /* modified at return */
  82         pa_bool_t *use_tsched,            /* modified at return */
  83         pa_alsa_mapping *mapping);
  84
  85 /* Opens the explicit ALSA device */
  86 snd_pcm_t *pa_alsa_open_by_device_string(
  87         const char *dir,
  88         char **dev,                       /* modified at return */
  89         pa_sample_spec *ss,               /* modified at return */
  90         pa_channel_map* map,              /* modified at return */
  91         int mode,
  92         snd_pcm_uframes_t *period_size,   /* modified at return */
  93         snd_pcm_uframes_t *buffer_size,   /* modified at return */
  94         snd_pcm_uframes_t tsched_size,
  95         pa_bool_t *use_mmap,              /* modified at return */
  96         pa_bool_t *use_tsched,            /* modified at return */
  97         pa_bool_t require_exact_channel_number);
  98
  99 /* Opens the explicit ALSA device with a fallback list */
 100 snd_pcm_t *pa_alsa_open_by_template(
 101         char **template,
 102         const char *dev_id,
 103         char **dev,                       /* modified at return */
 104         pa_sample_spec *ss,               /* modified at return */
 105         pa_channel_map* map,              /* modified at return */
 106         int mode,
 107         snd_pcm_uframes_t *period_size,   /* modified at return */
 108         snd_pcm_uframes_t *buffer_size,   /* modified at return */
 109         snd_pcm_uframes_t tsched_size,
 110         pa_bool_t *use_mmap,              /* modified at return */
 111         pa_bool_t *use_tsched,            /* modified at return */
 112         pa_bool_t require_exact_channel_number);
 113
 114 void pa_alsa_dump(pa_log_level_t level, snd_pcm_t *pcm);
 115 void pa_alsa_dump_status(snd_pcm_t *pcm);
 116
 117 void pa_alsa_refcnt_inc(void);
 118 void pa_alsa_refcnt_dec(void);
 119
 120 void pa_alsa_init_proplist_pcm_info(pa_core *c, pa_proplist *p, snd_pcm_info_t *pcm_info);
 121 void pa_alsa_init_proplist_card(pa_core *c, pa_proplist *p, int card);
 122 void pa_alsa_init_proplist_pcm(pa_core *c, pa_proplist *p, snd_pcm_t *pcm);
 123 void pa_alsa_init_proplist_ctl(pa_proplist *p, const char *name);
 124 pa_bool_t pa_alsa_init_description(pa_proplist *p);
 125
 126 int pa_alsa_recover_from_poll(snd_pcm_t *pcm, int revents);
 127
 128 pa_rtpoll_item* pa_alsa_build_pollfd(snd_pcm_t *pcm, pa_rtpoll *rtpoll);
 129
 130 snd_pcm_sframes_t pa_alsa_safe_avail(snd_pcm_t *pcm, size_t hwbuf_size, const pa_sample_spec *ss);
 131 int pa_alsa_safe_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delay, size_t hwbuf_size, const pa_sample_spec *ss);
 132 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);
 133
 134 char *pa_alsa_get_driver_name(int card);
 135 char *pa_alsa_get_driver_name_by_pcm(snd_pcm_t *pcm);
 136
 137 char *pa_alsa_get_reserve_name(const char *device);
 138
 139 pa_bool_t pa_alsa_pcm_is_hw(snd_pcm_t *pcm);
 140 pa_bool_t pa_alsa_pcm_is_modem(snd_pcm_t *pcm);
 141
 142 const char* pa_alsa_strerror(int errnum);
 143
 144 #endif