/** * \file include/pcm.h * \brief Application interface library for the ALSA driver * \author Jaroslav Kysela <[email protected]> * \author Abramo Bagnara <[email protected]> * \author Takashi Iwai <[email protected]> * \date 1998-2001 * * Application interface library for the ALSA driver. * See the \ref pcm page for more details. */ /* * This library 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. * * This program 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #ifndef __ALSA_PCM_H #define __ALSA_PCM_H #ifdef __cplusplus extern "C" { #endif /** * \defgroup PCM PCM Interface * See the \ref pcm page for more details. * \{ */ /** dlsym version for interface entry callback */ #define SND_PCM_DLSYM_VERSION … /** PCM generic info container */ snd_pcm_info_t; /** PCM hardware configuration space container * * snd_pcm_hw_params_t is an opaque structure which contains a set of possible * PCM hardware configurations. For example, a given instance might include a * range of buffer sizes, a range of period sizes, and a set of several sample * formats. Some subset of all possible combinations these sets may be valid, * but not necessarily any combination will be valid. * * When a parameter is set or restricted using a snd_pcm_hw_params_set* * function, all of the other ranges will be updated to exclude as many * impossible configurations as possible. Attempting to set a parameter * outside of its acceptable range will result in the function failing * and an error code being returned. */ snd_pcm_hw_params_t; /** PCM software configuration container */ snd_pcm_sw_params_t; /** PCM status container */ snd_pcm_status_t; /** PCM access types mask */ snd_pcm_access_mask_t; /** PCM formats mask */ snd_pcm_format_mask_t; /** PCM subformats mask */ snd_pcm_subformat_mask_t; /** PCM class */ snd_pcm_class_t; /** PCM subclass */ snd_pcm_subclass_t; /** PCM stream (direction) */ snd_pcm_stream_t; /** PCM access type */ snd_pcm_access_t; /** PCM sample format */ snd_pcm_format_t; /** PCM sample subformat */ snd_pcm_subformat_t; /** PCM state */ snd_pcm_state_t; /** PCM start mode */ snd_pcm_start_t; /** PCM xrun mode */ snd_pcm_xrun_t; /** PCM timestamp mode */ snd_pcm_tstamp_t; snd_pcm_tstamp_type_t; snd_pcm_audio_tstamp_config_t; snd_pcm_audio_tstamp_report_t; /** Unsigned frames quantity */ snd_pcm_uframes_t; /** Signed frames quantity */ snd_pcm_sframes_t; /** Non blocking mode (flag for open mode) \hideinitializer */ #define SND_PCM_NONBLOCK … /** Async notification (flag for open mode) \hideinitializer */ #define SND_PCM_ASYNC … /** In an abort state (internal, not allowed for open) */ #define SND_PCM_ABORT … /** Disable automatic (but not forced!) rate resamplinig */ #define SND_PCM_NO_AUTO_RESAMPLE … /** Disable automatic (but not forced!) channel conversion */ #define SND_PCM_NO_AUTO_CHANNELS … /** Disable automatic (but not forced!) format conversion */ #define SND_PCM_NO_AUTO_FORMAT … /** Disable soft volume control */ #define SND_PCM_NO_SOFTVOL … /** PCM handle */ snd_pcm_t; /** PCM type */ enum _snd_pcm_type { … }; /** PCM type */ snd_pcm_type_t; /** PCM area specification */ snd_pcm_channel_area_t; /** PCM synchronization ID */ snd_pcm_sync_id_t; /** #SND_PCM_TYPE_METER scope handle */ snd_pcm_scope_t; int snd_pcm_open(snd_pcm_t **pcm, const char *name, snd_pcm_stream_t stream, int mode); int snd_pcm_open_lconf(snd_pcm_t **pcm, const char *name, snd_pcm_stream_t stream, int mode, snd_config_t *lconf); int snd_pcm_open_fallback(snd_pcm_t **pcm, snd_config_t *root, const char *name, const char *orig_name, snd_pcm_stream_t stream, int mode); int snd_pcm_close(snd_pcm_t *pcm); const char *snd_pcm_name(snd_pcm_t *pcm); snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm); snd_pcm_stream_t snd_pcm_stream(snd_pcm_t *pcm); int snd_pcm_poll_descriptors_count(snd_pcm_t *pcm); int snd_pcm_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space); int snd_pcm_poll_descriptors_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); int snd_pcm_nonblock(snd_pcm_t *pcm, int nonblock); static __inline__ int snd_pcm_abort(snd_pcm_t *pcm) { … } int snd_async_add_pcm_handler(snd_async_handler_t **handler, snd_pcm_t *pcm, snd_async_callback_t callback, void *private_data); snd_pcm_t *snd_async_handler_get_pcm(snd_async_handler_t *handler); int snd_pcm_info(snd_pcm_t *pcm, snd_pcm_info_t *info); int snd_pcm_hw_params_current(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_free(snd_pcm_t *pcm); int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params); int snd_pcm_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params); int snd_pcm_prepare(snd_pcm_t *pcm); int snd_pcm_reset(snd_pcm_t *pcm); int snd_pcm_status(snd_pcm_t *pcm, snd_pcm_status_t *status); int snd_pcm_start(snd_pcm_t *pcm); int snd_pcm_drop(snd_pcm_t *pcm); int snd_pcm_drain(snd_pcm_t *pcm); int snd_pcm_pause(snd_pcm_t *pcm, int enable); snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm); int snd_pcm_hwsync(snd_pcm_t *pcm); int snd_pcm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp); int snd_pcm_resume(snd_pcm_t *pcm); int snd_pcm_htimestamp(snd_pcm_t *pcm, snd_pcm_uframes_t *avail, snd_htimestamp_t *tstamp); snd_pcm_sframes_t snd_pcm_avail(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm); int snd_pcm_avail_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *availp, snd_pcm_sframes_t *delayp); snd_pcm_sframes_t snd_pcm_rewindable(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames); snd_pcm_sframes_t snd_pcm_forwardable(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); snd_pcm_sframes_t snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); int snd_pcm_wait(snd_pcm_t *pcm, int timeout); int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2); int snd_pcm_unlink(snd_pcm_t *pcm); /** channel mapping API version number */ #define SND_CHMAP_API_VERSION … /** channel map list type */ enum snd_pcm_chmap_type { … }; /** channel positions */ enum snd_pcm_chmap_position { … }; /** bitmask for channel position */ #define SND_CHMAP_POSITION_MASK … /** bit flag indicating the channel is phase inverted */ #define SND_CHMAP_PHASE_INVERSE … /** bit flag indicating the non-standard channel value */ #define SND_CHMAP_DRIVER_SPEC … /** the channel map header */ snd_pcm_chmap_t; /** the header of array items returned from snd_pcm_query_chmaps() */ snd_pcm_chmap_query_t; snd_pcm_chmap_query_t **snd_pcm_query_chmaps(snd_pcm_t *pcm); snd_pcm_chmap_query_t **snd_pcm_query_chmaps_from_hw(int card, int dev, int subdev, snd_pcm_stream_t stream); void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps); snd_pcm_chmap_t *snd_pcm_get_chmap(snd_pcm_t *pcm); int snd_pcm_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map); const char *snd_pcm_chmap_type_name(enum snd_pcm_chmap_type val); const char *snd_pcm_chmap_name(enum snd_pcm_chmap_position val); const char *snd_pcm_chmap_long_name(enum snd_pcm_chmap_position val); int snd_pcm_chmap_print(const snd_pcm_chmap_t *map, size_t maxlen, char *buf); unsigned int snd_pcm_chmap_from_string(const char *str); snd_pcm_chmap_t *snd_pcm_chmap_parse_string(const char *str); //int snd_pcm_mixer_element(snd_pcm_t *pcm, snd_mixer_t *mixer, snd_mixer_elem_t **elem); /* * application helpers - these functions are implemented on top * of the basic API */ int snd_pcm_recover(snd_pcm_t *pcm, int err, int silent); int snd_pcm_set_params(snd_pcm_t *pcm, snd_pcm_format_t format, snd_pcm_access_t access, unsigned int channels, unsigned int rate, int soft_resample, unsigned int latency); int snd_pcm_get_params(snd_pcm_t *pcm, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t *period_size); /** \} */ /** * \defgroup PCM_Info Stream Information * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_info_sizeof(void); /** \hideinitializer * \brief allocate an invalid #snd_pcm_info_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_info_alloca(ptr) … int snd_pcm_info_malloc(snd_pcm_info_t **ptr); void snd_pcm_info_free(snd_pcm_info_t *obj); void snd_pcm_info_copy(snd_pcm_info_t *dst, const snd_pcm_info_t *src); unsigned int snd_pcm_info_get_device(const snd_pcm_info_t *obj); unsigned int snd_pcm_info_get_subdevice(const snd_pcm_info_t *obj); snd_pcm_stream_t snd_pcm_info_get_stream(const snd_pcm_info_t *obj); int snd_pcm_info_get_card(const snd_pcm_info_t *obj); const char *snd_pcm_info_get_id(const snd_pcm_info_t *obj); const char *snd_pcm_info_get_name(const snd_pcm_info_t *obj); const char *snd_pcm_info_get_subdevice_name(const snd_pcm_info_t *obj); snd_pcm_class_t snd_pcm_info_get_class(const snd_pcm_info_t *obj); snd_pcm_subclass_t snd_pcm_info_get_subclass(const snd_pcm_info_t *obj); unsigned int snd_pcm_info_get_subdevices_count(const snd_pcm_info_t *obj); unsigned int snd_pcm_info_get_subdevices_avail(const snd_pcm_info_t *obj); snd_pcm_sync_id_t snd_pcm_info_get_sync(const snd_pcm_info_t *obj); void snd_pcm_info_set_device(snd_pcm_info_t *obj, unsigned int val); void snd_pcm_info_set_subdevice(snd_pcm_info_t *obj, unsigned int val); void snd_pcm_info_set_stream(snd_pcm_info_t *obj, snd_pcm_stream_t val); /** \} */ /** * \defgroup PCM_HW_Params Hardware Parameters * \ingroup PCM * See the \ref pcm page for more details. * \{ */ int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_mmap_sample_resolution(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_double(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_batch(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_block_transfer(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_monotonic(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_overrange(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_pause(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_resume(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_half_duplex(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_joint_duplex(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_sync_start(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_disable_period_wakeup(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_supports_audio_wallclock_ts(const snd_pcm_hw_params_t *params); /* deprecated, use audio_ts_type */ int snd_pcm_hw_params_supports_audio_ts_type(const snd_pcm_hw_params_t *params, int type); int snd_pcm_hw_params_get_rate_numden(const snd_pcm_hw_params_t *params, unsigned int *rate_num, unsigned int *rate_den); int snd_pcm_hw_params_get_sbits(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_get_fifo_size(const snd_pcm_hw_params_t *params); #if 0 typedef struct _snd_pcm_hw_strategy snd_pcm_hw_strategy_t; /* choices need to be sorted on ascending badness */ typedef struct _snd_pcm_hw_strategy_simple_choices_list { unsigned int value; unsigned int badness; } snd_pcm_hw_strategy_simple_choices_list_t; int snd_pcm_hw_params_strategy(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, const snd_pcm_hw_strategy_t *strategy, unsigned int badness_min, unsigned int badness_max); void snd_pcm_hw_strategy_free(snd_pcm_hw_strategy_t *strategy); int snd_pcm_hw_strategy_simple(snd_pcm_hw_strategy_t **strategyp, unsigned int badness_min, unsigned int badness_max); int snd_pcm_hw_params_try_explain_failure(snd_pcm_t *pcm, snd_pcm_hw_params_t *fail, snd_pcm_hw_params_t *success, unsigned int depth, snd_output_t *out); #endif size_t snd_pcm_hw_params_sizeof(void); /** \hideinitializer * \brief allocate an invalid #snd_pcm_hw_params_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_hw_params_alloca(ptr) … int snd_pcm_hw_params_malloc(snd_pcm_hw_params_t **ptr); void snd_pcm_hw_params_free(snd_pcm_hw_params_t *obj); void snd_pcm_hw_params_copy(snd_pcm_hw_params_t *dst, const snd_pcm_hw_params_t *src); #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API) int snd_pcm_hw_params_get_access(const snd_pcm_hw_params_t *params, snd_pcm_access_t *_access); int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access); int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access); int snd_pcm_hw_params_set_access_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access); int snd_pcm_hw_params_set_access_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access); int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask); int snd_pcm_hw_params_get_access_mask(snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask); int snd_pcm_hw_params_get_format(const snd_pcm_hw_params_t *params, snd_pcm_format_t *val); int snd_pcm_hw_params_test_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val); int snd_pcm_hw_params_set_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val); int snd_pcm_hw_params_set_format_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format); int snd_pcm_hw_params_set_format_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format); int snd_pcm_hw_params_set_format_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask); void snd_pcm_hw_params_get_format_mask(snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask); int snd_pcm_hw_params_get_subformat(const snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); int snd_pcm_hw_params_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat); int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat); int snd_pcm_hw_params_set_subformat_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); int snd_pcm_hw_params_set_subformat_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); int snd_pcm_hw_params_set_subformat_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask); void snd_pcm_hw_params_get_subformat_mask(snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask); int snd_pcm_hw_params_get_channels(const snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_get_channels_min(const snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_get_channels_max(const snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_test_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_set_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_set_channels_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_channels_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_channels_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, unsigned int *max); int snd_pcm_hw_params_set_channels_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_channels_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_channels_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_get_rate(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_rate_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_rate_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_test_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_rate_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_params_set_rate_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_get_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_get_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_get_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_get_period_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_period_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_period_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_test_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_period_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_period_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_period_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_params_set_period_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_period_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_period_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_period_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); int snd_pcm_hw_params_get_period_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); int snd_pcm_hw_params_get_period_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); int snd_pcm_hw_params_test_period_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val, int dir); int snd_pcm_hw_params_set_period_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val, int dir); int snd_pcm_hw_params_set_period_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *min, int *mindir, snd_pcm_uframes_t *max, int *maxdir); int snd_pcm_hw_params_set_period_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_get_periods(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_periods_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_periods_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_test_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_periods_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_params_set_periods_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_get_buffer_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_buffer_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_buffer_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_test_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_buffer_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_buffer_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_buffer_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_params_set_buffer_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_buffer_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_buffer_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_buffer_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_get_buffer_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_get_buffer_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_test_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_hw_params_set_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_hw_params_set_buffer_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_set_buffer_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_set_buffer_size_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *min, snd_pcm_uframes_t *max); int snd_pcm_hw_params_set_buffer_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_set_buffer_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_set_buffer_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */ int snd_pcm_hw_params_get_min_align(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); /** \} */ /** * \defgroup PCM_SW_Params Software Parameters * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_sw_params_sizeof(void); /** \hideinitializer * \brief allocate an invalid #snd_pcm_sw_params_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_sw_params_alloca(ptr) … int snd_pcm_sw_params_malloc(snd_pcm_sw_params_t **ptr); void snd_pcm_sw_params_free(snd_pcm_sw_params_t *obj); void snd_pcm_sw_params_copy(snd_pcm_sw_params_t *dst, const snd_pcm_sw_params_t *src); int snd_pcm_sw_params_get_boundary(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API) int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val); int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val); int snd_pcm_sw_params_set_tstamp_type(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t val); int snd_pcm_sw_params_get_tstamp_type(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t *val); int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_period_event(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, int val); int snd_pcm_sw_params_get_period_event(const snd_pcm_sw_params_t *params, int *val); int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_start_threshold(const snd_pcm_sw_params_t *paramsm, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_stop_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_silence_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_silence_size(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */ /** \} */ /* include old API */ #ifndef ALSA_LIBRARY_BUILD #if defined(ALSA_PCM_OLD_HW_PARAMS_API) || defined(ALSA_PCM_OLD_SW_PARAMS_API) #include "pcm_old.h" #endif #endif /** * \defgroup PCM_Access Access Mask Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_access_mask_sizeof(void); /** \hideinitializer * \brief allocate an empty #snd_pcm_access_mask_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_access_mask_alloca(ptr) … int snd_pcm_access_mask_malloc(snd_pcm_access_mask_t **ptr); void snd_pcm_access_mask_free(snd_pcm_access_mask_t *obj); void snd_pcm_access_mask_copy(snd_pcm_access_mask_t *dst, const snd_pcm_access_mask_t *src); void snd_pcm_access_mask_none(snd_pcm_access_mask_t *mask); void snd_pcm_access_mask_any(snd_pcm_access_mask_t *mask); int snd_pcm_access_mask_test(const snd_pcm_access_mask_t *mask, snd_pcm_access_t val); int snd_pcm_access_mask_empty(const snd_pcm_access_mask_t *mask); void snd_pcm_access_mask_set(snd_pcm_access_mask_t *mask, snd_pcm_access_t val); void snd_pcm_access_mask_reset(snd_pcm_access_mask_t *mask, snd_pcm_access_t val); /** \} */ /** * \defgroup PCM_Format Format Mask Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_format_mask_sizeof(void); /** \hideinitializer * \brief allocate an empty #snd_pcm_format_mask_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_format_mask_alloca(ptr) … int snd_pcm_format_mask_malloc(snd_pcm_format_mask_t **ptr); void snd_pcm_format_mask_free(snd_pcm_format_mask_t *obj); void snd_pcm_format_mask_copy(snd_pcm_format_mask_t *dst, const snd_pcm_format_mask_t *src); void snd_pcm_format_mask_none(snd_pcm_format_mask_t *mask); void snd_pcm_format_mask_any(snd_pcm_format_mask_t *mask); int snd_pcm_format_mask_test(const snd_pcm_format_mask_t *mask, snd_pcm_format_t val); int snd_pcm_format_mask_empty(const snd_pcm_format_mask_t *mask); void snd_pcm_format_mask_set(snd_pcm_format_mask_t *mask, snd_pcm_format_t val); void snd_pcm_format_mask_reset(snd_pcm_format_mask_t *mask, snd_pcm_format_t val); /** \} */ /** * \defgroup PCM_SubFormat Subformat Mask Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_subformat_mask_sizeof(void); /** \hideinitializer * \brief allocate an empty #snd_pcm_subformat_mask_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_subformat_mask_alloca(ptr) … int snd_pcm_subformat_mask_malloc(snd_pcm_subformat_mask_t **ptr); void snd_pcm_subformat_mask_free(snd_pcm_subformat_mask_t *obj); void snd_pcm_subformat_mask_copy(snd_pcm_subformat_mask_t *dst, const snd_pcm_subformat_mask_t *src); void snd_pcm_subformat_mask_none(snd_pcm_subformat_mask_t *mask); void snd_pcm_subformat_mask_any(snd_pcm_subformat_mask_t *mask); int snd_pcm_subformat_mask_test(const snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val); int snd_pcm_subformat_mask_empty(const snd_pcm_subformat_mask_t *mask); void snd_pcm_subformat_mask_set(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val); void snd_pcm_subformat_mask_reset(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val); /** \} */ /** * \defgroup PCM_Status Status Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_status_sizeof(void); /** \hideinitializer * \brief allocate an invalid #snd_pcm_status_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_status_alloca(ptr) … int snd_pcm_status_malloc(snd_pcm_status_t **ptr); void snd_pcm_status_free(snd_pcm_status_t *obj); void snd_pcm_status_copy(snd_pcm_status_t *dst, const snd_pcm_status_t *src); snd_pcm_state_t snd_pcm_status_get_state(const snd_pcm_status_t *obj); void snd_pcm_status_get_trigger_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr); void snd_pcm_status_get_trigger_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr); void snd_pcm_status_get_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr); void snd_pcm_status_get_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr); void snd_pcm_status_get_audio_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr); void snd_pcm_status_get_driver_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr); void snd_pcm_status_get_audio_htstamp_report(const snd_pcm_status_t *obj, snd_pcm_audio_tstamp_report_t *audio_tstamp_report); void snd_pcm_status_set_audio_htstamp_config(snd_pcm_status_t *obj, snd_pcm_audio_tstamp_config_t *audio_tstamp_config); static inline void snd_pcm_pack_audio_tstamp_config(unsigned int *data, snd_pcm_audio_tstamp_config_t *config) { … } static inline void snd_pcm_unpack_audio_tstamp_report(unsigned int data, unsigned int accuracy, snd_pcm_audio_tstamp_report_t *report) { … } snd_pcm_sframes_t snd_pcm_status_get_delay(const snd_pcm_status_t *obj); snd_pcm_uframes_t snd_pcm_status_get_avail(const snd_pcm_status_t *obj); snd_pcm_uframes_t snd_pcm_status_get_avail_max(const snd_pcm_status_t *obj); snd_pcm_uframes_t snd_pcm_status_get_overrange(const snd_pcm_status_t *obj); /** \} */ /** * \defgroup PCM_Description Description Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ const char *snd_pcm_type_name(snd_pcm_type_t type); const char *snd_pcm_stream_name(const snd_pcm_stream_t stream); const char *snd_pcm_access_name(const snd_pcm_access_t _access); const char *snd_pcm_format_name(const snd_pcm_format_t format); const char *snd_pcm_format_description(const snd_pcm_format_t format); const char *snd_pcm_subformat_name(const snd_pcm_subformat_t subformat); const char *snd_pcm_subformat_description(const snd_pcm_subformat_t subformat); snd_pcm_format_t snd_pcm_format_value(const char* name); const char *snd_pcm_tstamp_mode_name(const snd_pcm_tstamp_t mode); const char *snd_pcm_state_name(const snd_pcm_state_t state); /** \} */ /** * \defgroup PCM_Dump Debug Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ int snd_pcm_dump(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_dump_hw_setup(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_dump_sw_setup(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_dump_setup(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out); int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out); int snd_pcm_status_dump(snd_pcm_status_t *status, snd_output_t *out); /** \} */ /** * \defgroup PCM_Direct Direct Access (MMAP) Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ int snd_pcm_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames); snd_pcm_sframes_t snd_pcm_mmap_commit(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t frames); snd_pcm_sframes_t snd_pcm_mmap_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_mmap_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_mmap_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); /** \} */ /** * \defgroup PCM_Helpers Helper Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ int snd_pcm_format_signed(snd_pcm_format_t format); int snd_pcm_format_unsigned(snd_pcm_format_t format); int snd_pcm_format_linear(snd_pcm_format_t format); int snd_pcm_format_float(snd_pcm_format_t format); int snd_pcm_format_little_endian(snd_pcm_format_t format); int snd_pcm_format_big_endian(snd_pcm_format_t format); int snd_pcm_format_cpu_endian(snd_pcm_format_t format); int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */ int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */ snd_pcm_format_t snd_pcm_build_linear_format(int width, int pwidth, int unsignd, int big_endian); ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples); u_int8_t snd_pcm_format_silence(snd_pcm_format_t format); u_int16_t snd_pcm_format_silence_16(snd_pcm_format_t format); u_int32_t snd_pcm_format_silence_32(snd_pcm_format_t format); u_int64_t snd_pcm_format_silence_64(snd_pcm_format_t format); int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int samples); snd_pcm_sframes_t snd_pcm_bytes_to_frames(snd_pcm_t *pcm, ssize_t bytes); ssize_t snd_pcm_frames_to_bytes(snd_pcm_t *pcm, snd_pcm_sframes_t frames); long snd_pcm_bytes_to_samples(snd_pcm_t *pcm, ssize_t bytes); ssize_t snd_pcm_samples_to_bytes(snd_pcm_t *pcm, long samples); int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset, unsigned int samples, snd_pcm_format_t format); int snd_pcm_areas_silence(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset, unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format); int snd_pcm_area_copy(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset, const snd_pcm_channel_area_t *src_channel, snd_pcm_uframes_t src_offset, unsigned int samples, snd_pcm_format_t format); int snd_pcm_areas_copy(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset, const snd_pcm_channel_area_t *src_channels, snd_pcm_uframes_t src_offset, unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format); /** \} */ /** * \defgroup PCM_Hook Hook Extension * \ingroup PCM * See the \ref pcm page for more details. * \{ */ /** type of pcm hook */ snd_pcm_hook_type_t; /** PCM hook container */ snd_pcm_hook_t; /** PCM hook callback function */ snd_pcm_hook_func_t; snd_pcm_t *snd_pcm_hook_get_pcm(snd_pcm_hook_t *hook); void *snd_pcm_hook_get_private(snd_pcm_hook_t *hook); void snd_pcm_hook_set_private(snd_pcm_hook_t *hook, void *private_data); int snd_pcm_hook_add(snd_pcm_hook_t **hookp, snd_pcm_t *pcm, snd_pcm_hook_type_t type, snd_pcm_hook_func_t func, void *private_data); int snd_pcm_hook_remove(snd_pcm_hook_t *hook); /** \} */ /** * \defgroup PCM_Scope Scope Plugin Extension * \ingroup PCM * See the \ref pcm page for more details. * \{ */ /** #SND_PCM_TYPE_METER scope functions */ snd_pcm_scope_ops_t; snd_pcm_uframes_t snd_pcm_meter_get_bufsize(snd_pcm_t *pcm); unsigned int snd_pcm_meter_get_channels(snd_pcm_t *pcm); unsigned int snd_pcm_meter_get_rate(snd_pcm_t *pcm); snd_pcm_uframes_t snd_pcm_meter_get_now(snd_pcm_t *pcm); snd_pcm_uframes_t snd_pcm_meter_get_boundary(snd_pcm_t *pcm); int snd_pcm_meter_add_scope(snd_pcm_t *pcm, snd_pcm_scope_t *scope); snd_pcm_scope_t *snd_pcm_meter_search_scope(snd_pcm_t *pcm, const char *name); int snd_pcm_scope_malloc(snd_pcm_scope_t **ptr); void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope, const snd_pcm_scope_ops_t *val); void snd_pcm_scope_set_name(snd_pcm_scope_t *scope, const char *val); const char *snd_pcm_scope_get_name(snd_pcm_scope_t *scope); void *snd_pcm_scope_get_callback_private(snd_pcm_scope_t *scope); void snd_pcm_scope_set_callback_private(snd_pcm_scope_t *scope, void *val); int snd_pcm_scope_s16_open(snd_pcm_t *pcm, const char *name, snd_pcm_scope_t **scopep); int16_t *snd_pcm_scope_s16_get_channel_buffer(snd_pcm_scope_t *scope, unsigned int channel); /** \} */ /** * \defgroup PCM_Simple Simple setup functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ /** Simple PCM latency type */ snd_spcm_latency_t; /** Simple PCM xrun type */ snd_spcm_xrun_type_t; /** Simple PCM duplex type */ snd_spcm_duplex_type_t; int snd_spcm_init(snd_pcm_t *pcm, unsigned int rate, unsigned int channels, snd_pcm_format_t format, snd_pcm_subformat_t subformat, snd_spcm_latency_t latency, snd_pcm_access_t _access, snd_spcm_xrun_type_t xrun_type); int snd_spcm_init_duplex(snd_pcm_t *playback_pcm, snd_pcm_t *capture_pcm, unsigned int rate, unsigned int channels, snd_pcm_format_t format, snd_pcm_subformat_t subformat, snd_spcm_latency_t latency, snd_pcm_access_t _access, snd_spcm_xrun_type_t xrun_type, snd_spcm_duplex_type_t duplex_type); int snd_spcm_init_get_params(snd_pcm_t *pcm, unsigned int *rate, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t *period_size); /** \} */ /** * \defgroup PCM_Deprecated Deprecated Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ /* Deprecated functions, for compatibility */ const char *snd_pcm_start_mode_name(snd_pcm_start_t mode) __attribute__((deprecated)); const char *snd_pcm_xrun_mode_name(snd_pcm_xrun_t mode) __attribute__((deprecated)); int snd_pcm_sw_params_set_start_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_start_t val) __attribute__((deprecated)); snd_pcm_start_t snd_pcm_sw_params_get_start_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated)); int snd_pcm_sw_params_set_xrun_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_xrun_t val) __attribute__((deprecated)); snd_pcm_xrun_t snd_pcm_sw_params_get_xrun_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated)); #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API) int snd_pcm_sw_params_set_xfer_align(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val) __attribute__((deprecated)); int snd_pcm_sw_params_get_xfer_align(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val) __attribute__((deprecated)); int snd_pcm_sw_params_set_sleep_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val) __attribute__((deprecated)); int snd_pcm_sw_params_get_sleep_min(const snd_pcm_sw_params_t *params, unsigned int *val) __attribute__((deprecated)); #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */ #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API) int snd_pcm_hw_params_get_tick_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_get_tick_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_get_tick_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_test_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */ /** \} */ #ifdef __cplusplus } #endif #endif /* __ALSA_PCM_H */
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