1 #ifndef fooalsautilhfoo
2 #define fooalsautilhfoo
5 This file is part of PulseAudio.
7 Copyright 2004-2006 Lennart Poettering
8 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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 of the License,
13 or (at your option) any later version.
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.
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
26 #include <asoundlib.h>
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>
34 #include <pulsecore/rtpoll.h>
36 typedef struct pa_alsa_fdlist pa_alsa_fdlist;
38 struct pa_alsa_fdlist *pa_alsa_fdlist_new(void);
39 void pa_alsa_fdlist_free(struct pa_alsa_fdlist *fdl);
40 int pa_alsa_fdlist_set_mixer(struct pa_alsa_fdlist *fdl, snd_mixer_t *mixer_handle, pa_mainloop_api* m);
42 int pa_alsa_set_hw_params(
43 snd_pcm_t *pcm_handle,
46 snd_pcm_uframes_t *period_size,
47 snd_pcm_uframes_t tsched_size,
49 pa_bool_t *use_tsched,
50 pa_bool_t require_exact_channel_number);
52 int pa_alsa_set_sw_params(snd_pcm_t *pcm, snd_pcm_uframes_t avail_min);
54 int pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev);
55 snd_mixer_elem_t *pa_alsa_find_elem(snd_mixer_t *mixer, const char *name, const char *fallback, pa_bool_t playback);
57 typedef struct pa_alsa_profile_info {
59 const char *alsa_name;
60 const char *description;
63 } pa_alsa_profile_info;
65 /* Picks a working profile based on the specified ss/map */
66 snd_pcm_t *pa_alsa_open_by_device_id_auto(
73 snd_pcm_uframes_t *period_size,
74 snd_pcm_uframes_t tsched_size,
76 pa_bool_t *use_tsched,
77 const pa_alsa_profile_info **profile);
79 /* Uses the specified profile */
80 snd_pcm_t *pa_alsa_open_by_device_id_profile(
87 snd_pcm_uframes_t *period_size,
88 snd_pcm_uframes_t tsched_size,
90 pa_bool_t *use_tsched,
91 const pa_alsa_profile_info *profile);
93 /* Opens the explicit ALSA device */
94 snd_pcm_t *pa_alsa_open_by_device_string(
101 snd_pcm_uframes_t *period_size,
102 snd_pcm_uframes_t tsched_size,
104 pa_bool_t *use_tsched,
105 pa_bool_t require_exact_channel_number);
107 int pa_alsa_probe_profiles(
109 const pa_sample_spec *ss,
110 void (*cb)(const pa_alsa_profile_info *sink, const pa_alsa_profile_info *source, void *userdata),
113 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);
115 void pa_alsa_dump(snd_pcm_t *pcm);
116 void pa_alsa_dump_status(snd_pcm_t *pcm);
118 void pa_alsa_redirect_errors_inc(void);
119 void pa_alsa_redirect_errors_dec(void);
121 void pa_alsa_init_proplist_pcm(pa_proplist *p, snd_pcm_info_t *pcm_info);
122 void pa_alsa_init_proplist_card(pa_proplist *p, int card);
124 int pa_alsa_recover_from_poll(snd_pcm_t *pcm, int revents);
126 pa_rtpoll_item* pa_alsa_build_pollfd(snd_pcm_t *pcm, pa_rtpoll *rtpoll);
128 snd_pcm_sframes_t pa_alsa_safe_avail_update(snd_pcm_t *pcm, size_t hwbuf_size, const pa_sample_spec *ss);
129 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);