/* * PCM Interface - local header file * Copyright (c) 2000 by Jaroslav Kysela * Abramo Bagnara * * * 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 * */ #include #include #include #include #define _snd_mask sndrv_mask #define _snd_pcm_access_mask _snd_mask #define _snd_pcm_format_mask _snd_mask #define _snd_pcm_subformat_mask _snd_mask #include "local.h" #define SND_INTERVAL_INLINE #include "interval.h" #define SND_MASK_INLINE #include "mask.h" typedef enum sndrv_pcm_hw_param snd_pcm_hw_param_t; #define SND_PCM_HW_PARAM_ACCESS SNDRV_PCM_HW_PARAM_ACCESS #define SND_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_FIRST_MASK #define SND_PCM_HW_PARAM_FORMAT SNDRV_PCM_HW_PARAM_FORMAT #define SND_PCM_HW_PARAM_SUBFORMAT SNDRV_PCM_HW_PARAM_SUBFORMAT #define SND_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_LAST_MASK #define SND_PCM_HW_PARAM_SAMPLE_BITS SNDRV_PCM_HW_PARAM_SAMPLE_BITS #define SND_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_FIRST_INTERVAL #define SND_PCM_HW_PARAM_FRAME_BITS SNDRV_PCM_HW_PARAM_FRAME_BITS #define SND_PCM_HW_PARAM_CHANNELS SNDRV_PCM_HW_PARAM_CHANNELS #define SND_PCM_HW_PARAM_RATE SNDRV_PCM_HW_PARAM_RATE #define SND_PCM_HW_PARAM_PERIOD_TIME SNDRV_PCM_HW_PARAM_PERIOD_TIME #define SND_PCM_HW_PARAM_PERIOD_SIZE SNDRV_PCM_HW_PARAM_PERIOD_SIZE #define SND_PCM_HW_PARAM_PERIOD_BYTES SNDRV_PCM_HW_PARAM_PERIOD_BYTES #define SND_PCM_HW_PARAM_PERIODS SNDRV_PCM_HW_PARAM_PERIODS #define SND_PCM_HW_PARAM_BUFFER_TIME SNDRV_PCM_HW_PARAM_BUFFER_TIME #define SND_PCM_HW_PARAM_BUFFER_SIZE SNDRV_PCM_HW_PARAM_BUFFER_SIZE #define SND_PCM_HW_PARAM_BUFFER_BYTES SNDRV_PCM_HW_PARAM_BUFFER_BYTES #define SND_PCM_HW_PARAM_TICK_TIME SNDRV_PCM_HW_PARAM_TICK_TIME #define SND_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_LAST_INTERVAL #define SND_PCM_HW_PARAM_LAST_MASK SNDRV_PCM_HW_PARAM_LAST_MASK #define SND_PCM_HW_PARAM_FIRST_MASK SNDRV_PCM_HW_PARAM_FIRST_MASK #define SND_PCM_HW_PARAM_LAST_INTERVAL SNDRV_PCM_HW_PARAM_LAST_INTERVAL #define SND_PCM_HW_PARAM_FIRST_INTERVAL SNDRV_PCM_HW_PARAM_FIRST_INTERVAL /** device accepts mmaped access */ #define SND_PCM_INFO_MMAP SNDRV_PCM_INFO_MMAP /** device accepts mmaped access with sample resolution */ #define SND_PCM_INFO_MMAP_VALID SNDRV_PCM_INFO_MMAP_VALID /** device is doing double buffering */ #define SND_PCM_INFO_DOUBLE SNDRV_PCM_INFO_DOUBLE /** device transfers samples in batch */ #define SND_PCM_INFO_BATCH SNDRV_PCM_INFO_BATCH /** device accepts interleaved samples */ #define SND_PCM_INFO_INTERLEAVED SNDRV_PCM_INFO_INTERLEAVED /** device accepts non-interleaved samples */ #define SND_PCM_INFO_NONINTERLEAVED SNDRV_PCM_INFO_NONINTERLEAVED /** device accepts complex sample organization */ #define SND_PCM_INFO_COMPLEX SNDRV_PCM_INFO_COMPLEX /** device is capable block transfers */ #define SND_PCM_INFO_BLOCK_TRANSFER SNDRV_PCM_INFO_BLOCK_TRANSFER /** device can detect DAC/ADC overrange */ #define SND_PCM_INFO_OVERRANGE SNDRV_PCM_INFO_OVERRANGE /** device supports resume */ #define SND_PCM_INFO_RESUME SNDRV_PCM_INFO_RESUME /** device is capable to pause */ #define SND_PCM_INFO_PAUSE SNDRV_PCM_INFO_PAUSE /** device can do only half duplex */ #define SND_PCM_INFO_HALF_DUPLEX SNDRV_PCM_INFO_HALF_DUPLEX /** device can do only joint duplex (same parameters) */ #define SND_PCM_INFO_JOINT_DUPLEX SNDRV_PCM_INFO_JOINT_DUPLEX /** device can do a kind of synchronized start */ #define SND_PCM_INFO_SYNC_START SNDRV_PCM_INFO_SYNC_START /** device can disable period wakeups */ #define SND_PCM_INFO_NO_PERIOD_WAKEUP SNDRV_PCM_INFO_NO_PERIOD_WAKEUP #define SND_PCM_HW_PARAMS_NORESAMPLE SNDRV_PCM_HW_PARAMS_NORESAMPLE #define SND_PCM_HW_PARAMS_EXPORT_BUFFER SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER #define SND_PCM_HW_PARAMS_NO_PERIOD_WAKEUP SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP #define SND_PCM_INFO_MONOTONIC 0x80000000 typedef struct _snd_pcm_rbptr { snd_pcm_t *master; volatile snd_pcm_uframes_t *ptr; int fd; off_t offset; int link_dst_count; snd_pcm_t **link_dst; void *private_data; void (*changed)(snd_pcm_t *pcm, snd_pcm_t *src); } snd_pcm_rbptr_t; typedef struct _snd_pcm_channel_info { unsigned int channel; void *addr; /* base address of channel samples */ unsigned int first; /* offset to first sample in bits */ unsigned int step; /* samples distance in bits */ enum { SND_PCM_AREA_SHM, SND_PCM_AREA_MMAP, SND_PCM_AREA_LOCAL } type; union { struct { struct snd_shm_area *area; int shmid; } shm; struct { int fd; off_t offset; } mmap; } u; char reserved[64]; } snd_pcm_channel_info_t; typedef struct { int (*close)(snd_pcm_t *pcm); int (*nonblock)(snd_pcm_t *pcm, int nonblock); int (*async)(snd_pcm_t *pcm, int sig, pid_t pid); int (*info)(snd_pcm_t *pcm, snd_pcm_info_t *info); int (*hw_refine)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int (*hw_params)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int (*hw_free)(snd_pcm_t *pcm); int (*sw_params)(snd_pcm_t *pcm, snd_pcm_sw_params_t *params); int (*channel_info)(snd_pcm_t *pcm, snd_pcm_channel_info_t *info); void (*dump)(snd_pcm_t *pcm, snd_output_t *out); int (*mmap)(snd_pcm_t *pcm); int (*munmap)(snd_pcm_t *pcm); } snd_pcm_ops_t; typedef struct { int (*status)(snd_pcm_t *pcm, snd_pcm_status_t *status); int (*prepare)(snd_pcm_t *pcm); int (*reset)(snd_pcm_t *pcm); int (*start)(snd_pcm_t *pcm); int (*drop)(snd_pcm_t *pcm); int (*drain)(snd_pcm_t *pcm); int (*pause)(snd_pcm_t *pcm, int enable); snd_pcm_state_t (*state)(snd_pcm_t *pcm); int (*hwsync)(snd_pcm_t *pcm); int (*delay)(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp); int (*resume)(snd_pcm_t *pcm); int (*link)(snd_pcm_t *pcm1, snd_pcm_t *pcm2); int (*link_slaves)(snd_pcm_t *pcm, snd_pcm_t *master); int (*unlink)(snd_pcm_t *pcm); snd_pcm_sframes_t (*rewindable)(snd_pcm_t *pcm); snd_pcm_sframes_t (*rewind)(snd_pcm_t *pcm, snd_pcm_uframes_t frames); snd_pcm_sframes_t (*forwardable)(snd_pcm_t *pcm); snd_pcm_sframes_t (*forward)(snd_pcm_t *pcm, snd_pcm_uframes_t frames); snd_pcm_sframes_t (*writei)(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t (*writen)(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); snd_pcm_sframes_t (*readi)(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t (*readn)(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); snd_pcm_sframes_t (*avail_update)(snd_pcm_t *pcm); snd_pcm_sframes_t (*mmap_commit)(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t size); int (*htimestamp)(snd_pcm_t *pcm, snd_pcm_uframes_t *avail, snd_htimestamp_t *tstamp); int (*poll_descriptors_count)(snd_pcm_t *pcm); int (*poll_descriptors)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space); int (*poll_revents)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); } snd_pcm_fast_ops_t; struct _snd_pcm { void *open_func; char *name; snd_pcm_type_t type; snd_pcm_stream_t stream; int mode; long minperiodtime; /* in us */ int poll_fd_count; int poll_fd; unsigned short poll_events; int setup: 1, monotonic: 1, compat: 1; snd_pcm_access_t access; /* access mode */ snd_pcm_format_t format; /* SND_PCM_FORMAT_* */ snd_pcm_subformat_t subformat; /* subformat */ unsigned int channels; /* channels */ unsigned int rate; /* rate in Hz */ snd_pcm_uframes_t period_size; unsigned int period_time; /* period duration */ snd_interval_t periods; snd_pcm_tstamp_t tstamp_mode; /* timestamp mode */ unsigned int period_step; snd_pcm_uframes_t avail_min; /* min avail frames for wakeup */ int period_event; snd_pcm_uframes_t start_threshold; snd_pcm_uframes_t stop_threshold; snd_pcm_uframes_t silence_threshold; /* Silence filling happens when noise is nearest than this */ snd_pcm_uframes_t silence_size; /* Silence filling size */ snd_pcm_uframes_t boundary; /* pointers wrap point */ unsigned int info; /* Info for returned setup */ unsigned int msbits; /* used most significant bits */ unsigned int rate_num; /* rate numerator */ unsigned int rate_den; /* rate denominator */ unsigned int hw_flags; /* actual hardware flags */ snd_pcm_uframes_t fifo_size; /* chip FIFO size in frames */ snd_pcm_uframes_t buffer_size; snd_interval_t buffer_time; unsigned int sample_bits; unsigned int frame_bits; snd_pcm_rbptr_t appl; snd_pcm_rbptr_t hw; snd_pcm_uframes_t min_align; unsigned int mmap_rw: 1; /* use always mmapped buffer */ unsigned int mmap_shadow: 1; /* don't call actual mmap, * use the mmaped buffer of the slave */ unsigned int donot_close: 1; /* don't close this PCM */ snd_pcm_channel_info_t *mmap_channels; snd_pcm_channel_area_t *running_areas; snd_pcm_channel_area_t *stopped_areas; const snd_pcm_ops_t *ops; const snd_pcm_fast_ops_t *fast_ops; snd_pcm_t *op_arg; snd_pcm_t *fast_op_arg; void *private_data; struct list_head async_handlers; }; /* make local functions really local */ /* Grrr, these cannot be local - a bad aserver uses them! #define snd_pcm_async \ snd1_pcm_async #define snd_pcm_mmap \ snd1_pcm_mmap #define snd_pcm_munmap \ snd1_pcm_munmap #define snd_pcm_hw_refine \ snd1_pcm_hw_refine */ #define snd_pcm_new \ snd1_pcm_new #define snd_pcm_free \ snd1_pcm_free #define snd_pcm_areas_from_buf \ snd1_pcm_areas_from_buf #define snd_pcm_areas_from_bufs \ snd1_pcm_areas_from_bufs #define snd_pcm_open_named_slave \ snd1_pcm_open_named_slave #define snd_pcm_conf_generic_id \ snd1_pcm_conf_generic_id #define snd_pcm_hw_open_fd \ snd1_pcm_hw_open_fd #define snd_pcm_wait_nocheck \ snd1_pcm_wait_nocheck #define snd_pcm_rate_get_default_converter \ snd1_pcm_rate_get_default_converter #define snd_pcm_set_hw_ptr \ snd1_pcm_set_hw_ptr #define snd_pcm_set_appl_ptr \ snd1_pcm_set_appl_ptr #define snd_pcm_link_hw_ptr \ snd1_pcm_link_hw_ptr #define snd_pcm_link_appl_ptr \ snd1_pcm_link_appl_ptr #define snd_pcm_unlink_hw_ptr \ snd1_pcm_unlink_hw_ptr #define snd_pcm_unlink_appl_ptr \ snd1_pcm_unlink_appl_ptr #define snd_pcm_mmap_appl_ptr \ snd1_pcm_mmap_appl_ptr #define snd_pcm_mmap_appl_backward \ snd1_pcm_mmap_appl_backward #define snd_pcm_mmap_appl_forward \ snd1_pcm_mmap_appl_forward #define snd_pcm_mmap_hw_backward \ snd1_pcm_mmap_hw_backward #define snd_pcm_mmap_hw_forward \ snd1_pcm_mmap_hw_forward #define snd_pcm_read_areas \ snd1_pcm_read_areas #define snd_pcm_write_areas \ snd1_pcm_write_areas #define snd_pcm_read_mmap \ snd1_pcm_read_mmap #define snd_pcm_write_mmap \ snd1_pcm_write_mmap #define snd_pcm_channel_info_shm \ snd1_pcm_channel_info_shm #define snd_pcm_hw_refine_soft \ snd1_pcm_hw_refine_soft #define snd_pcm_hw_refine_slave \ snd1_pcm_hw_refine_slave #define snd_pcm_hw_params_slave \ snd1_pcm_hw_params_slave #define snd_pcm_hw_param_refine_near \ snd1_pcm_hw_param_refine_near #define snd_pcm_hw_param_refine_multiple \ snd1_pcm_hw_param_refine_multiple #define snd_pcm_hw_param_empty \ snd1_pcm_hw_param_empty #define snd_pcm_hw_param_always_eq \ snd1_pcm_hw_param_always_eq #define snd_pcm_hw_param_never_eq \ snd1_pcm_hw_param_never_eq #define snd_pcm_hw_param_get_mask \ snd1_pcm_hw_param_get_mask #define snd_pcm_hw_param_get_interval \ snd1_pcm_hw_param_get_interval #define snd_pcm_hw_param_any \ snd1_pcm_hw_param_any #define snd_pcm_hw_param_set_integer \ snd1_pcm_hw_param_set_integer #define snd_pcm_hw_param_set_first \ snd1_pcm_hw_param_set_first #define snd_pcm_hw_param_set_last \ snd1_pcm_hw_param_set_last #define snd_pcm_hw_param_set_near \ snd1_pcm_hw_param_set_near #define snd_pcm_hw_param_set_min \ snd1_pcm_hw_param_set_min #define snd_pcm_hw_param_set_max \ snd1_pcm_hw_param_set_max #define snd_pcm_hw_param_set_minmax \ snd1_pcm_hw_param_set_minmax #define snd_pcm_hw_param_set \ snd1_pcm_hw_param_set #define snd_pcm_hw_param_set_mask \ snd1_pcm_hw_param_set_mask #define snd_pcm_hw_param_get \ snd1_pcm_hw_param_get #define snd_pcm_hw_param_get_min \ snd1_pcm_hw_param_get_min #define snd_pcm_hw_param_get_max \ snd1_pcm_hw_param_get_max #define snd_pcm_hw_param_name \ snd1_pcm_hw_param_name int snd_pcm_new(snd_pcm_t **pcmp, snd_pcm_type_t type, const char *name, snd_pcm_stream_t stream, int mode); int snd_pcm_free(snd_pcm_t *pcm); void snd_pcm_areas_from_buf(snd_pcm_t *pcm, snd_pcm_channel_area_t *areas, void *buf); void snd_pcm_areas_from_bufs(snd_pcm_t *pcm, snd_pcm_channel_area_t *areas, void **bufs); int snd_pcm_async(snd_pcm_t *pcm, int sig, pid_t pid); int snd_pcm_mmap(snd_pcm_t *pcm); int snd_pcm_munmap(snd_pcm_t *pcm); int snd_pcm_mmap_ready(snd_pcm_t *pcm); void snd_pcm_set_hw_ptr(snd_pcm_t *pcm, volatile snd_pcm_uframes_t *hw_ptr, int fd, off_t offset); void snd_pcm_set_appl_ptr(snd_pcm_t *pcm, volatile snd_pcm_uframes_t *appl_ptr, int fd, off_t offset); void snd_pcm_link_hw_ptr(snd_pcm_t *pcm, snd_pcm_t *slave); void snd_pcm_link_appl_ptr(snd_pcm_t *pcm, snd_pcm_t *slave); void snd_pcm_unlink_hw_ptr(snd_pcm_t *pcm, snd_pcm_t *slave); void snd_pcm_unlink_appl_ptr(snd_pcm_t *pcm, snd_pcm_t *slave); snd_pcm_sframes_t snd_pcm_mmap_appl_ptr(snd_pcm_t *pcm, off_t offset); void snd_pcm_mmap_appl_backward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); void snd_pcm_mmap_appl_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); void snd_pcm_mmap_hw_backward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); void snd_pcm_mmap_hw_forward(snd_pcm_t *pcm, 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); typedef snd_pcm_sframes_t (*snd_pcm_xfer_areas_func_t)(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas, snd_pcm_uframes_t offset, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_read_areas(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas, snd_pcm_uframes_t offset, snd_pcm_uframes_t size, snd_pcm_xfer_areas_func_t func); snd_pcm_sframes_t snd_pcm_write_areas(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas, snd_pcm_uframes_t offset, snd_pcm_uframes_t size, snd_pcm_xfer_areas_func_t func); snd_pcm_sframes_t snd_pcm_read_mmap(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_write_mmap(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t size); static inline int snd_pcm_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t *info) { return pcm->ops->channel_info(pcm, info); } int snd_pcm_channel_info_shm(snd_pcm_t *pcm, snd_pcm_channel_info_t *info, int shmid); int _snd_pcm_poll_descriptor(snd_pcm_t *pcm); #define _snd_pcm_link_descriptor _snd_pcm_poll_descriptor /* FIXME */ #define _snd_pcm_async_descriptor _snd_pcm_poll_descriptor /* FIXME */ /* handle special error cases */ static inline int snd_pcm_check_error(snd_pcm_t *pcm, int err) { if (err == -EINTR) { switch (snd_pcm_state(pcm)) { case SND_PCM_STATE_XRUN: return -EPIPE; case SND_PCM_STATE_SUSPENDED: return -ESTRPIPE; case SND_PCM_STATE_DISCONNECTED: return -ENODEV; default: break; } } return err; } static inline snd_pcm_uframes_t snd_pcm_mmap_playback_avail(snd_pcm_t *pcm) { snd_pcm_sframes_t avail; avail = *pcm->hw.ptr + pcm->buffer_size - *pcm->appl.ptr; if (avail < 0) avail += pcm->boundary; else if ((snd_pcm_uframes_t) avail >= pcm->boundary) avail -= pcm->boundary; return avail; } static inline snd_pcm_uframes_t snd_pcm_mmap_capture_avail(snd_pcm_t *pcm) { snd_pcm_sframes_t avail; avail = *pcm->hw.ptr - *pcm->appl.ptr; if (avail < 0) avail += pcm->boundary; return avail; } static inline snd_pcm_uframes_t snd_pcm_mmap_avail(snd_pcm_t *pcm) { if (pcm->stream == SND_PCM_STREAM_PLAYBACK) return snd_pcm_mmap_playback_avail(pcm); else return snd_pcm_mmap_capture_avail(pcm); } static inline snd_pcm_sframes_t snd_pcm_mmap_playback_hw_avail(snd_pcm_t *pcm) { return pcm->buffer_size - snd_pcm_mmap_playback_avail(pcm); } static inline snd_pcm_sframes_t snd_pcm_mmap_capture_hw_avail(snd_pcm_t *pcm) { return pcm->buffer_size - snd_pcm_mmap_capture_avail(pcm); } static inline snd_pcm_sframes_t snd_pcm_mmap_hw_avail(snd_pcm_t *pcm) { snd_pcm_sframes_t avail; avail = *pcm->hw.ptr - *pcm->appl.ptr; if (pcm->stream == SND_PCM_STREAM_PLAYBACK) avail += pcm->buffer_size; if (avail < 0) avail += pcm->boundary; return pcm->buffer_size - avail; } static inline const snd_pcm_channel_area_t *snd_pcm_mmap_areas(snd_pcm_t *pcm) { if (pcm->stopped_areas && snd_pcm_state(pcm) != SND_PCM_STATE_RUNNING) return pcm->stopped_areas; return pcm->running_areas; } static inline snd_pcm_uframes_t snd_pcm_mmap_offset(snd_pcm_t *pcm) { assert(pcm); return *pcm->appl.ptr % pcm->buffer_size; } static inline snd_pcm_uframes_t snd_pcm_mmap_hw_offset(snd_pcm_t *pcm) { assert(pcm); return *pcm->hw.ptr % pcm->buffer_size; } static inline snd_pcm_uframes_t snd_pcm_mmap_playback_delay(snd_pcm_t *pcm) { return snd_pcm_mmap_playback_hw_avail(pcm); } static inline snd_pcm_uframes_t snd_pcm_mmap_capture_delay(snd_pcm_t *pcm) { return snd_pcm_mmap_capture_hw_avail(pcm); } static inline snd_pcm_sframes_t snd_pcm_mmap_delay(snd_pcm_t *pcm) { if (pcm->stream == SND_PCM_STREAM_PLAYBACK) return snd_pcm_mmap_playback_delay(pcm); else return snd_pcm_mmap_capture_delay(pcm); } static inline void *snd_pcm_channel_area_addr(const snd_pcm_channel_area_t *area, snd_pcm_uframes_t offset) { unsigned int bitofs = area->first + area->step * offset; assert(bitofs % 8 == 0); return (char *) area->addr + bitofs / 8; } static inline unsigned int snd_pcm_channel_area_step(const snd_pcm_channel_area_t *area) { assert(area->step % 8 == 0); return area->step / 8; } static inline snd_pcm_sframes_t _snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size) { return pcm->fast_ops->writei(pcm->fast_op_arg, buffer, size); } static inline snd_pcm_sframes_t _snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size) { return pcm->fast_ops->writen(pcm->fast_op_arg, bufs, size); } static inline snd_pcm_sframes_t _snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size) { return pcm->fast_ops->readi(pcm->fast_op_arg, buffer, size); } static inline snd_pcm_sframes_t _snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size) { return pcm->fast_ops->readn(pcm->fast_op_arg, bufs, size); } static inline int muldiv(int a, int b, int c, int *r) { int64_t n = (int64_t)a * b; int64_t v = n / c; if (v > INT_MAX) { *r = 0; return INT_MAX; } if (v < INT_MIN) { *r = 0; return INT_MIN; } *r = n % c; return v; } static inline int muldiv_down(int a, int b, int c) { int64_t v = (int64_t)a * b / c; if (v > INT_MAX) { return INT_MAX; } if (v < INT_MIN) { return INT_MIN; } return v; } static inline int muldiv_near(int a, int b, int c) { int r; int n = muldiv(a, b, c, &r); if (r >= (c + 1) / 2) n++; return n; } int snd_pcm_hw_refine(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_refine_soft(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_refine_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int (*cprepare)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params), int (*cchange)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_params_t *sparams), int (*sprepare)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params), int (*schange)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_params_t *sparams), int (*srefine)(snd_pcm_t *pcm, snd_pcm_hw_params_t *sparams)); int snd_pcm_hw_params_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int (*cchange)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_params_t *sparams), int (*sprepare)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params), int (*schange)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_params_t *sparams), int (*sparams)(snd_pcm_t *pcm, snd_pcm_hw_params_t *sparams)); void _snd_pcm_hw_params_any(snd_pcm_hw_params_t *params); void _snd_pcm_hw_param_set_empty(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); int _snd_pcm_hw_param_set_interval(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_interval_t *val); int _snd_pcm_hw_param_set_mask(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_mask_t *mask); int _snd_pcm_hw_param_first(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); int _snd_pcm_hw_param_last(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); int _snd_pcm_hw_param_set(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int val, int dir); static inline int _snd_pcm_hw_params_set_format(snd_pcm_hw_params_t *params, snd_pcm_format_t val) { return _snd_pcm_hw_param_set(params, SND_PCM_HW_PARAM_FORMAT, (unsigned long) val, 0); } static inline int _snd_pcm_hw_params_set_subformat(snd_pcm_hw_params_t *params, snd_pcm_subformat_t val) { return _snd_pcm_hw_param_set(params, SND_PCM_HW_PARAM_SUBFORMAT, (unsigned long) val, 0); } int _snd_pcm_hw_param_set_min(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int val, int dir); int _snd_pcm_hw_param_set_max(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int val, int dir); int _snd_pcm_hw_param_set_minmax(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int min, int mindir, unsigned int max, int maxdir); int _snd_pcm_hw_param_refine(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_pcm_hw_params_t *src); int _snd_pcm_hw_params_refine(snd_pcm_hw_params_t *params, unsigned int vars, const snd_pcm_hw_params_t *src); int snd_pcm_hw_param_refine_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_pcm_hw_params_t *src); int snd_pcm_hw_param_refine_multiple(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_pcm_hw_params_t *src); int snd_pcm_hw_param_empty(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); int snd_pcm_hw_param_always_eq(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_pcm_hw_params_t *params1); int snd_pcm_hw_param_never_eq(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_pcm_hw_params_t *params1); const snd_mask_t *snd_pcm_hw_param_get_mask(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); const snd_interval_t *snd_pcm_hw_param_get_interval(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); int snd_pcm_hw_param_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); int snd_pcm_hw_param_set_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_set_mode_t mode, snd_pcm_hw_param_t var); int snd_pcm_hw_param_set_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int *rval, int *dir); int snd_pcm_hw_param_set_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int *rval, int *dir); int snd_pcm_hw_param_set_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int *val, int *dir); int snd_pcm_hw_param_set_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_set_mode_t mode, snd_pcm_hw_param_t var, unsigned int *val, int *dir); int snd_pcm_hw_param_set_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_set_mode_t mode, snd_pcm_hw_param_t var, unsigned int *val, int *dir); int snd_pcm_hw_param_set_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_set_mode_t mode, snd_pcm_hw_param_t var, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_param_set(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_set_mode_t mode, snd_pcm_hw_param_t var, unsigned int val, int dir); int snd_pcm_hw_param_set_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_set_mode_t mode, snd_pcm_hw_param_t var, const snd_mask_t *mask); int snd_pcm_hw_param_get(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int *val, int *dir); int snd_pcm_hw_param_get_min(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int *val, int *dir); int snd_pcm_hw_param_get_max(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int *val, int *dir); #ifdef INTERNAL snd_pcm_sframes_t INTERNAL(snd_pcm_forward)(snd_pcm_t *pcm, snd_pcm_uframes_t frames); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_access_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *access); int INTERNAL(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 INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_format_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format); int INTERNAL(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 INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_subformat_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_get_channels)(const snd_pcm_hw_params_t *params, unsigned int *val); int INTERNAL(snd_pcm_hw_params_get_channels_min)(const snd_pcm_hw_params_t *params, unsigned int *val); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_channels_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int INTERNAL(snd_pcm_hw_params_set_channels_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int INTERNAL(snd_pcm_hw_params_set_channels_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int INTERNAL(snd_pcm_hw_params_get_rate)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_get_rate_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_rate_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_set_rate_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_set_rate_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_get_period_time)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_get_period_time_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_period_time_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_set_period_time_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_set_period_time_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_get_period_size)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); int INTERNAL(snd_pcm_hw_params_get_period_size_min)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); int INTERNAL(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 INTERNAL(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 INTERNAL(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 INTERNAL(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 INTERNAL(snd_pcm_hw_params_get_periods)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_get_periods_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_periods_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_set_periods_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_get_buffer_time)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_get_buffer_time_min)(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_buffer_time_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_set_buffer_time_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_set_buffer_time_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int INTERNAL(snd_pcm_hw_params_get_buffer_size)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int INTERNAL(snd_pcm_hw_params_get_buffer_size_min)(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int INTERNAL(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 INTERNAL(snd_pcm_hw_params_set_buffer_size_near)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int INTERNAL(snd_pcm_hw_params_set_buffer_size_first)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int INTERNAL(snd_pcm_hw_params_set_buffer_size_last)(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val); int INTERNAL(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_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int INTERNAL(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_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int INTERNAL(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 INTERNAL(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 INTERNAL(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 INTERNAL(snd_pcm_sw_params_get_silence_size)(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); #endif /* INTERNAL */ const char *snd_pcm_hw_param_name(snd_pcm_hw_param_t param); void snd_pcm_hw_param_dump(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, snd_output_t *out); #if 0 int snd_pcm_hw_strategy_simple_near(snd_pcm_hw_strategy_t *strategy, int order, snd_pcm_hw_param_t var, unsigned int best, unsigned int mul); int snd_pcm_hw_strategy_simple_choices(snd_pcm_hw_strategy_t *strategy, int order, snd_pcm_hw_param_t var, unsigned int count, snd_pcm_hw_strategy_simple_choices_list_t *choices); #endif #define SCONF_MANDATORY 1 #define SCONF_UNCHANGED 2 int snd_pcm_slave_conf(snd_config_t *root, snd_config_t *conf, snd_config_t **pcm_conf, unsigned int count, ...); #define SND_PCM_APPEND (1<<8) int snd_pcm_open_named_slave(snd_pcm_t **pcmp, const char *name, snd_config_t *root, snd_config_t *conf, snd_pcm_stream_t stream, int mode, snd_config_t *parent_conf); static inline int snd_pcm_open_slave(snd_pcm_t **pcmp, snd_config_t *root, snd_config_t *conf, snd_pcm_stream_t stream, int mode, snd_config_t *parent_conf) { return snd_pcm_open_named_slave(pcmp, NULL, root, conf, stream, mode, parent_conf); } int snd_pcm_conf_generic_id(const char *id); int snd_pcm_hw_open_fd(snd_pcm_t **pcmp, const char *name, int fd, int mmap_emulation, int sync_ptr_ioctl); int __snd_pcm_mmap_emul_open(snd_pcm_t **pcmp, const char *name, snd_pcm_t *slave, int close_slave); int snd_pcm_wait_nocheck(snd_pcm_t *pcm, int timeout); const snd_config_t *snd_pcm_rate_get_default_converter(snd_config_t *root); #define SND_PCM_HW_PARBIT_ACCESS (1U << SND_PCM_HW_PARAM_ACCESS) #define SND_PCM_HW_PARBIT_FORMAT (1U << SND_PCM_HW_PARAM_FORMAT) #define SND_PCM_HW_PARBIT_SUBFORMAT (1U << SND_PCM_HW_PARAM_SUBFORMAT) #define SND_PCM_HW_PARBIT_CHANNELS (1U << SND_PCM_HW_PARAM_CHANNELS) #define SND_PCM_HW_PARBIT_RATE (1U << SND_PCM_HW_PARAM_RATE) #define SND_PCM_HW_PARBIT_PERIOD_TIME (1U << SND_PCM_HW_PARAM_PERIOD_TIME) #define SND_PCM_HW_PARBIT_PERIOD_SIZE (1U << SND_PCM_HW_PARAM_PERIOD_SIZE) #define SND_PCM_HW_PARBIT_PERIODS (1U << SND_PCM_HW_PARAM_PERIODS) #define SND_PCM_HW_PARBIT_BUFFER_TIME (1U << SND_PCM_HW_PARAM_BUFFER_TIME) #define SND_PCM_HW_PARBIT_BUFFER_SIZE (1U << SND_PCM_HW_PARAM_BUFFER_SIZE) #define SND_PCM_HW_PARBIT_SAMPLE_BITS (1U << SND_PCM_HW_PARAM_SAMPLE_BITS) #define SND_PCM_HW_PARBIT_FRAME_BITS (1U << SND_PCM_HW_PARAM_FRAME_BITS) #define SND_PCM_HW_PARBIT_PERIOD_BYTES (1U << SND_PCM_HW_PARAM_PERIOD_BYTES) #define SND_PCM_HW_PARBIT_BUFFER_BYTES (1U << SND_PCM_HW_PARAM_BUFFER_BYTES) #define SND_PCM_HW_PARBIT_TICK_TIME (1U << SND_PCM_HW_PARAM_TICK_TIME) #define SND_PCM_ACCBIT_MMAP { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \ (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \ (1U << SND_PCM_ACCESS_MMAP_COMPLEX)) } #define SND_PCM_ACCBIT_MMAPI { (1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) } #define SND_PCM_ACCBIT_MMAPN { (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) } #define SND_PCM_ACCBIT_MMAPC { (1U << SND_PCM_ACCESS_MMAP_COMPLEX) } #define SND_PCM_ACCBIT_SHM { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \ (1U << SND_PCM_ACCESS_RW_INTERLEAVED) | \ (1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \ (1U << SND_PCM_ACCESS_RW_NONINTERLEAVED)) } #define SND_PCM_ACCBIT_SHMI { ((1U << SND_PCM_ACCESS_MMAP_INTERLEAVED) | \ (1U << SND_PCM_ACCESS_RW_INTERLEAVED)) } #define SND_PCM_ACCBIT_SHMN { ((1U << SND_PCM_ACCESS_MMAP_NONINTERLEAVED) | \ (1U << SND_PCM_ACCESS_RW_NONINTERLEAVED)) } #define SND_PCM_FMTBIT_LINEAR \ { ((1U << SND_PCM_FORMAT_S8) | \ (1U << SND_PCM_FORMAT_U8) | \ (1U << SND_PCM_FORMAT_S16_LE) | \ (1U << SND_PCM_FORMAT_S16_BE) | \ (1U << SND_PCM_FORMAT_U16_LE) | \ (1U << SND_PCM_FORMAT_U16_BE) | \ (1U << SND_PCM_FORMAT_S24_LE) | \ (1U << SND_PCM_FORMAT_S24_BE) | \ (1U << SND_PCM_FORMAT_U24_LE) | \ (1U << SND_PCM_FORMAT_U24_BE) | \ (1U << SND_PCM_FORMAT_S32_LE) | \ (1U << SND_PCM_FORMAT_S32_BE) | \ (1U << SND_PCM_FORMAT_U32_LE) | \ (1U << SND_PCM_FORMAT_U32_BE)), \ ((1U << (SND_PCM_FORMAT_S24_3LE - 32)) | \ (1U << (SND_PCM_FORMAT_U24_3LE - 32)) | \ (1U << (SND_PCM_FORMAT_S24_3BE - 32)) | \ (1U << (SND_PCM_FORMAT_U24_3BE - 32)) | \ (1U << (SND_PCM_FORMAT_S20_3LE - 32)) | \ (1U << (SND_PCM_FORMAT_U20_3LE - 32)) | \ (1U << (SND_PCM_FORMAT_S20_3BE - 32)) | \ (1U << (SND_PCM_FORMAT_U20_3BE - 32)) | \ (1U << (SND_PCM_FORMAT_S18_3LE - 32)) | \ (1U << (SND_PCM_FORMAT_U18_3LE - 32)) | \ (1U << (SND_PCM_FORMAT_S18_3BE - 32)) | \ (1U << (SND_PCM_FORMAT_U18_3BE - 32))) } #define SND_PCM_FMTBIT_FLOAT \ { ((1U << SND_PCM_FORMAT_FLOAT_LE) | \ (1U << SND_PCM_FORMAT_FLOAT_BE) | \ (1U << SND_PCM_FORMAT_FLOAT64_LE) | \ (1U << SND_PCM_FORMAT_FLOAT64_BE)) } typedef union snd_tmp_float { float f; int32_t i; } snd_tmp_float_t; typedef union snd_tmp_double { double d; int64_t l; } snd_tmp_double_t; /* get the current timestamp */ static inline void gettimestamp(snd_htimestamp_t *tstamp, int monotonic) { #if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC) if (monotonic) { clock_gettime(CLOCK_MONOTONIC, tstamp); } else { #endif struct timeval tv; gettimeofday(&tv, 0); tstamp->tv_sec = tv.tv_sec; tstamp->tv_nsec = tv.tv_usec * 1000L; #if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC) } #endif }