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Diffstat (limited to 'src/modules/alsa/alsa-util.h')
| -rw-r--r-- | src/modules/alsa/alsa-util.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/modules/alsa/alsa-util.h b/src/modules/alsa/alsa-util.h new file mode 100644 index 0000000..2eed3ea --- /dev/null +++ b/src/modules/alsa/alsa-util.h @@ -0,0 +1,167 @@ +#ifndef fooalsautilhfoo +#define fooalsautilhfoo + +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of the License, + or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. +***/ + +#include <alsa/asoundlib.h> + +#include <pulse/sample.h> +#include <pulse/channelmap.h> +#include <pulse/proplist.h> + +#include <pulsecore/rtpoll.h> +#include <pulsecore/core.h> +#include <pulsecore/log.h> + +#include "alsa-mixer.h" + +enum { + PA_ALSA_ERR_UNSPECIFIED = 1, + PA_ALSA_ERR_UCM_OPEN = 1000, + PA_ALSA_ERR_UCM_NO_VERB = 1001, + PA_ALSA_ERR_UCM_LINKED = 1002 +}; + +int pa_alsa_set_hw_params( + snd_pcm_t *pcm_handle, + pa_sample_spec *ss, /* modified at return */ + snd_pcm_uframes_t *period_size, /* modified at return */ + snd_pcm_uframes_t *buffer_size, /* modified at return */ + snd_pcm_uframes_t tsched_size, + bool *use_mmap, /* modified at return */ + bool *use_tsched, /* modified at return */ + bool require_exact_channel_number); + +int pa_alsa_set_sw_params( + snd_pcm_t *pcm, + snd_pcm_uframes_t avail_min, + bool period_event); + +/* Picks a working mapping from the profile set based on the specified ss/map */ +snd_pcm_t *pa_alsa_open_by_device_id_auto( + const char *dev_id, + char **dev, /* modified at return */ + pa_sample_spec *ss, /* modified at return */ + pa_channel_map* map, /* modified at return */ + int mode, + snd_pcm_uframes_t *period_size, /* modified at return */ + snd_pcm_uframes_t *buffer_size, /* modified at return */ + snd_pcm_uframes_t tsched_size, + bool *use_mmap, /* modified at return */ + bool *use_tsched, /* modified at return */ + pa_alsa_profile_set *ps, + pa_alsa_mapping **mapping); /* modified at return */ + +/* Uses the specified mapping */ +snd_pcm_t *pa_alsa_open_by_device_id_mapping( + const char *dev_id, + char **dev, /* modified at return */ + pa_sample_spec *ss, /* modified at return */ + pa_channel_map* map, /* modified at return */ + int mode, + snd_pcm_uframes_t *period_size, /* modified at return */ + snd_pcm_uframes_t *buffer_size, /* modified at return */ + snd_pcm_uframes_t tsched_size, + bool *use_mmap, /* modified at return */ + bool *use_tsched, /* modified at return */ + pa_alsa_mapping *mapping); + +/* Opens the explicit ALSA device */ +snd_pcm_t *pa_alsa_open_by_device_string( + const char *dir, + char **dev, /* modified at return */ + pa_sample_spec *ss, /* modified at return */ + pa_channel_map* map, /* modified at return */ + int mode, + snd_pcm_uframes_t *period_size, /* modified at return */ + snd_pcm_uframes_t *buffer_size, /* modified at return */ + snd_pcm_uframes_t tsched_size, + bool *use_mmap, /* modified at return */ + bool *use_tsched, /* modified at return */ + bool require_exact_channel_number); + +/* Opens the explicit ALSA device with a fallback list */ +snd_pcm_t *pa_alsa_open_by_template( + char **template, + const char *dev_id, + char **dev, /* modified at return */ + pa_sample_spec *ss, /* modified at return */ + pa_channel_map* map, /* modified at return */ + int mode, + snd_pcm_uframes_t *period_size, /* modified at return */ + snd_pcm_uframes_t *buffer_size, /* modified at return */ + snd_pcm_uframes_t tsched_size, + bool *use_mmap, /* modified at return */ + bool *use_tsched, /* modified at return */ + bool require_exact_channel_number); + +void pa_alsa_dump(pa_log_level_t level, snd_pcm_t *pcm); +void pa_alsa_dump_status(snd_pcm_t *pcm); + +void pa_alsa_refcnt_inc(void); +void pa_alsa_refcnt_dec(void); + +void pa_alsa_init_proplist_pcm_info(pa_core *c, pa_proplist *p, snd_pcm_info_t *pcm_info); +void pa_alsa_init_proplist_card(pa_core *c, pa_proplist *p, int card); +void pa_alsa_init_proplist_pcm(pa_core *c, pa_proplist *p, snd_pcm_t *pcm); +void pa_alsa_init_proplist_ctl(pa_proplist *p, const char *name); +bool pa_alsa_init_description(pa_proplist *p, pa_card *card); + +int pa_alsa_recover_from_poll(snd_pcm_t *pcm, int revents); + +pa_rtpoll_item* pa_alsa_build_pollfd(snd_pcm_t *pcm, pa_rtpoll *rtpoll); + +snd_pcm_sframes_t pa_alsa_safe_avail(snd_pcm_t *pcm, size_t hwbuf_size, const pa_sample_spec *ss); +int pa_alsa_safe_delay(snd_pcm_t *pcm, snd_pcm_status_t *status, snd_pcm_sframes_t *delay, size_t hwbuf_size, const pa_sample_spec *ss, bool capture); +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); + +char *pa_alsa_get_driver_name(int card); +char *pa_alsa_get_driver_name_by_pcm(snd_pcm_t *pcm); + +char *pa_alsa_get_reserve_name(const char *device); + +unsigned int *pa_alsa_get_supported_rates(snd_pcm_t *pcm, unsigned int fallback_rate); +pa_sample_format_t *pa_alsa_get_supported_formats(snd_pcm_t *pcm, pa_sample_format_t fallback_format); + +bool pa_alsa_pcm_is_hw(snd_pcm_t *pcm); +bool pa_alsa_pcm_is_modem(snd_pcm_t *pcm); + +const char* pa_alsa_strerror(int errnum); + +bool pa_alsa_may_tsched(bool want); + +snd_mixer_elem_t *pa_alsa_mixer_find_card(snd_mixer_t *mixer, struct pa_alsa_mixer_id *alsa_id, unsigned int device); +snd_mixer_elem_t *pa_alsa_mixer_find_pcm(snd_mixer_t *mixer, const char *name, unsigned int device); + +snd_mixer_t *pa_alsa_open_mixer(pa_hashmap *mixers, int alsa_card_index, bool probe); +snd_mixer_t *pa_alsa_open_mixer_by_name(pa_hashmap *mixers, const char *dev, bool probe); +snd_mixer_t *pa_alsa_open_mixer_for_pcm(pa_hashmap *mixers, snd_pcm_t *pcm, bool probe); +void pa_alsa_mixer_set_fdlist(pa_hashmap *mixers, snd_mixer_t *mixer, pa_mainloop_api *ml); +void pa_alsa_mixer_free(pa_alsa_mixer *mixer); + +typedef struct pa_hdmi_eld pa_hdmi_eld; +struct pa_hdmi_eld { + char monitor_name[17]; +}; + +int pa_alsa_get_hdmi_eld(snd_hctl_elem_t *elem, pa_hdmi_eld *eld); + +#endif |