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
  34 #include <pulsecore/rtpoll.h>
  35 #include <pulsecore/core.h>
  36 #include <pulsecore/log.h>
  37
  38 typedef struct pa_alsa_fdlist pa_alsa_fdlist;
  39
  40 struct pa_alsa_fdlist *pa_alsa_fdlist_new(void);
  41 void pa_alsa_fdlist_free(struct pa_alsa_fdlist *fdl);
  42 int pa_alsa_fdlist_set_mixer(struct pa_alsa_fdlist *fdl, snd_mixer_t *mixer_handle, pa_mainloop_api* m);
  43
  44 int pa_alsa_set_hw_params(
  45         snd_pcm_t *pcm_handle,
  46         pa_sample_spec *ss,
  47         uint32_t *periods,
  48         snd_pcm_uframes_t *period_size,
  49         snd_pcm_uframes_t tsched_size,
  50         pa_bool_t *use_mmap,
  51         pa_bool_t *use_tsched,
  52         pa_bool_t require_exact_channel_number);
  53
  54 int pa_alsa_set_sw_params(snd_pcm_t *pcm, snd_pcm_uframes_t avail_min);
  55
  56 typedef struct pa_alsa_profile_info {
  57     pa_channel_map map;
  58     const char *alsa_name;
  59     const char *alsa_name_fallback;
  60     const char *description; /* internationalized */
  61     const char *name;
  62     unsigned priority;
  63     const char *playback_control_name, *playback_control_fallback;
  64     const char *record_control_name, *record_control_fallback;
  65 } pa_alsa_profile_info;
  66
  67 int pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev);
  68 snd_mixer_elem_t *pa_alsa_find_elem(snd_mixer_t *mixer, const char *name, const char *fallback, pa_bool_t playback);
  69 int pa_alsa_find_mixer_and_elem(snd_pcm_t *pcm, snd_mixer_t **_m, snd_mixer_elem_t **_e, const char *control_name, const pa_alsa_profile_info*profile);
  70
  71 /* Picks a working profile based on the specified ss/map */
  72 snd_pcm_t *pa_alsa_open_by_device_id_auto(
  73         const char *dev_id,
  74         char **dev,
  75         pa_sample_spec *ss,
  76         pa_channel_map* map,
  77         int mode,
  78         uint32_t *nfrags,
  79         snd_pcm_uframes_t *period_size,
  80         snd_pcm_uframes_t tsched_size,
  81         pa_bool_t *use_mmap,
  82         pa_bool_t *use_tsched,
  83         const pa_alsa_profile_info **profile);
  84
  85 /* Uses the specified profile */
  86 snd_pcm_t *pa_alsa_open_by_device_id_profile(
  87         const char *dev_id,
  88         char **dev,
  89         pa_sample_spec *ss,
  90         pa_channel_map* map,
  91         int mode,
  92         uint32_t *nfrags,
  93         snd_pcm_uframes_t *period_size,
  94         snd_pcm_uframes_t tsched_size,
  95         pa_bool_t *use_mmap,
  96         pa_bool_t *use_tsched,
  97         const pa_alsa_profile_info *profile);
  98
  99 /* Opens the explicit ALSA device */
 100 snd_pcm_t *pa_alsa_open_by_device_string(
 101         const char *device,
 102         char **dev,
 103         pa_sample_spec *ss,
 104         pa_channel_map* map,
 105         int mode,
 106         uint32_t *nfrags,
 107         snd_pcm_uframes_t *period_size,
 108         snd_pcm_uframes_t tsched_size,
 109         pa_bool_t *use_mmap,
 110         pa_bool_t *use_tsched,
 111         pa_bool_t require_exact_channel_number);
 112
 113 int pa_alsa_probe_profiles(
 114         const char *dev_id,
 115         const pa_sample_spec *ss,
 116         void (*cb)(const pa_alsa_profile_info *sink, const pa_alsa_profile_info *source, void *userdata),
 117         void *userdata);
 118
 119 int pa_alsa_calc_mixer_map(snd_mixer_elem_t *elem, const pa_channel_map *channel_map, snd_mixer_selem_channel_id_t mixer_map[], pa_bool_t playback);
 120
 121 void pa_alsa_dump(pa_log_level_t level, snd_pcm_t *pcm);
 122 void pa_alsa_dump_status(snd_pcm_t *pcm);
 123
 124 void pa_alsa_redirect_errors_inc(void);
 125 void pa_alsa_redirect_errors_dec(void);
 126
 127 void pa_alsa_init_proplist_pcm_info(pa_core *c, pa_proplist *p, snd_pcm_info_t *pcm_info);
 128 void pa_alsa_init_proplist_card(pa_core *c, pa_proplist *p, int card);
 129 void pa_alsa_init_proplist_pcm(pa_core *c, pa_proplist *p, snd_pcm_t *pcm, snd_mixer_elem_t *elem);
 130 pa_bool_t pa_alsa_init_description(pa_proplist *p);
 131
 132 int pa_alsa_recover_from_poll(snd_pcm_t *pcm, int revents);
 133
 134 pa_rtpoll_item* pa_alsa_build_pollfd(snd_pcm_t *pcm, pa_rtpoll *rtpoll);
 135
 136 snd_pcm_sframes_t pa_alsa_safe_avail(snd_pcm_t *pcm, size_t hwbuf_size, const pa_sample_spec *ss);
 137 int pa_alsa_safe_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delay, size_t hwbuf_size, const pa_sample_spec *ss);
 138 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);
 139
 140 char *pa_alsa_get_driver_name(int card);
 141
 142 char *pa_alsa_get_driver_name_by_pcm(snd_pcm_t *pcm);
 143
 144 char *pa_alsa_get_reserve_name(const char *device);
 145
 146 pa_bool_t pa_alsa_pcm_is_hw(snd_pcm_t *pcm);
 147
 148 pa_bool_t pa_alsa_pcm_is_modem(snd_pcm_t *pcm);
 149
 150 const char* pa_alsa_strerror(int errnum);
 151
 152 #endif