/**************************************************************************** * * * pcm.h * * Digital Audio Interface * * * ****************************************************************************/ /* sndrv aliasing */ typedef enum sndrv_pcm_class snd_pcm_class_t; typedef enum sndrv_pcm_subclass snd_pcm_subclass_t; typedef enum sndrv_pcm_stream snd_pcm_stream_t; typedef enum sndrv_pcm_access snd_pcm_access_t; typedef enum sndrv_pcm_format snd_pcm_format_t; typedef enum sndrv_pcm_subformat snd_pcm_subformat_t; typedef enum sndrv_pcm_state snd_pcm_state_t; typedef enum sndrv_pcm_hw_param snd_pcm_hw_param_t; typedef enum sndrv_pcm_start snd_pcm_start_t; typedef enum sndrv_pcm_xrun snd_pcm_xrun_t; typedef enum sndrv_pcm_tstamp snd_pcm_tstamp_t; typedef sndrv_pcm_uframes_t snd_pcm_uframes_t; typedef sndrv_pcm_sframes_t snd_pcm_sframes_t; typedef struct timeval snd_timestamp_t; typedef struct _snd_pcm_info snd_pcm_info_t; typedef struct _snd_pcm_hw_params snd_pcm_hw_params_t; typedef struct _snd_pcm_sw_params snd_pcm_sw_params_t; typedef struct _snd_pcm_status snd_pcm_status_t; #define SND_PCM_CLASS_GENERIC SNDRV_PCM_CLASS_GENERIC #define SND_PCM_CLASS_MULTI SNDRV_PCM_CLASS_MULTI #define SND_PCM_CLASS_MODEM SNDRV_PCM_CLASS_MODEM #define SND_PCM_CLASS_DIGITIZER SNDRV_PCM_CLASS_DIGITIZER #define SND_PCM_SUBCLASS_GENERIC_MIX SNDRV_PCM_SUBCLASS_GENERIC_MIX #define SND_PCM_SUBCLASS_MULTI_MIX SNDRV_PCM_SUBCLASS_MULTI_MIX #define SND_PCM_STREAM_PLAYBACK SNDRV_PCM_STREAM_PLAYBACK #define SND_PCM_STREAM_CAPTURE SNDRV_PCM_STREAM_CAPTURE #define SND_PCM_STREAM_LAST SNDRV_PCM_STREAM_LAST #define SND_PCM_ACCESS_MMAP_INTERLEAVED SNDRV_PCM_ACCESS_MMAP_INTERLEAVED #define SND_PCM_ACCESS_MMAP_NONINTERLEAVED SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED #define SND_PCM_ACCESS_MMAP_COMPLEX SNDRV_PCM_ACCESS_MMAP_COMPLEX #define SND_PCM_ACCESS_RW_INTERLEAVED SNDRV_PCM_ACCESS_RW_INTERLEAVED #define SND_PCM_ACCESS_RW_NONINTERLEAVED SNDRV_PCM_ACCESS_RW_NONINTERLEAVED #define SND_PCM_ACCESS_LAST SNDRV_PCM_ACCESS_LAST #define SND_PCM_FORMAT_S8 SNDRV_PCM_FORMAT_S8 #define SND_PCM_FORMAT_U8 SNDRV_PCM_FORMAT_U8 #define SND_PCM_FORMAT_S16_LE SNDRV_PCM_FORMAT_S16_LE #define SND_PCM_FORMAT_S16_BE SNDRV_PCM_FORMAT_S16_BE #define SND_PCM_FORMAT_U16_LE SNDRV_PCM_FORMAT_U16_LE #define SND_PCM_FORMAT_U16_BE SNDRV_PCM_FORMAT_U16_BE #define SND_PCM_FORMAT_S24_LE SNDRV_PCM_FORMAT_S24_LE #define SND_PCM_FORMAT_S24_BE SNDRV_PCM_FORMAT_S24_BE #define SND_PCM_FORMAT_U24_LE SNDRV_PCM_FORMAT_U24_LE #define SND_PCM_FORMAT_U24_BE SNDRV_PCM_FORMAT_U24_BE #define SND_PCM_FORMAT_S32_LE SNDRV_PCM_FORMAT_S32_LE #define SND_PCM_FORMAT_S32_BE SNDRV_PCM_FORMAT_S32_BE #define SND_PCM_FORMAT_U32_LE SNDRV_PCM_FORMAT_U32_LE #define SND_PCM_FORMAT_U32_BE SNDRV_PCM_FORMAT_U32_BE #define SND_PCM_FORMAT_FLOAT_LE SNDRV_PCM_FORMAT_FLOAT_LE #define SND_PCM_FORMAT_FLOAT_BE SNDRV_PCM_FORMAT_FLOAT_BE #define SND_PCM_FORMAT_FLOAT64_LE SNDRV_PCM_FORMAT_FLOAT64_LE #define SND_PCM_FORMAT_FLOAT64_BE SNDRV_PCM_FORMAT_FLOAT64_BE #define SND_PCM_FORMAT_IEC958_SUBFRAME_LE SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE #define SND_PCM_FORMAT_IEC958_SUBFRAME_BE SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE #define SND_PCM_FORMAT_MU_LAW SNDRV_PCM_FORMAT_MU_LAW #define SND_PCM_FORMAT_A_LAW SNDRV_PCM_FORMAT_A_LAW #define SND_PCM_FORMAT_IMA_ADPCM SNDRV_PCM_FORMAT_IMA_ADPCM #define SND_PCM_FORMAT_MPEG SNDRV_PCM_FORMAT_MPEG #define SND_PCM_FORMAT_GSM SNDRV_PCM_FORMAT_GSM #define SND_PCM_FORMAT_SPECIAL SNDRV_PCM_FORMAT_SPECIAL #define SND_PCM_FORMAT_LAST SNDRV_PCM_FORMAT_LAST #define SND_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16 #define SND_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16 #define SND_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24 #define SND_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24 #define SND_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32 #define SND_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32 #define SND_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT #define SND_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64 #define SND_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME #define SND_PCM_FORMAT_S16 SNDRV_PCM_FORMAT_S16 #define SND_PCM_FORMAT_U16 SNDRV_PCM_FORMAT_U16 #define SND_PCM_FORMAT_S24 SNDRV_PCM_FORMAT_S24 #define SND_PCM_FORMAT_U24 SNDRV_PCM_FORMAT_U24 #define SND_PCM_FORMAT_S32 SNDRV_PCM_FORMAT_S32 #define SND_PCM_FORMAT_U32 SNDRV_PCM_FORMAT_U32 #define SND_PCM_FORMAT_FLOAT SNDRV_PCM_FORMAT_FLOAT #define SND_PCM_FORMAT_FLOAT64 SNDRV_PCM_FORMAT_FLOAT64 #define SND_PCM_FORMAT_IEC958_SUBFRAME SNDRV_PCM_FORMAT_IEC958_SUBFRAME #define SND_PCM_SUBFORMAT_STD SNDRV_PCM_SUBFORMAT_STD #define SND_PCM_SUBFORMAT_LAST SNDRV_PCM_SUBFORMAT_LAST #define SND_PCM_INFO_MMAP SNDRV_PCM_INFO_MMAP #define SND_PCM_INFO_MMAP_VALID SNDRV_PCM_INFO_MMAP_VALID #define SND_PCM_INFO_DOUBLE SNDRV_PCM_INFO_DOUBLE #define SND_PCM_INFO_BATCH SNDRV_PCM_INFO_BATCH #define SND_PCM_INFO_INTERLEAVED SNDRV_PCM_INFO_INTERLEAVED #define SND_PCM_INFO_NONINTERLEAVED SNDRV_PCM_INFO_NONINTERLEAVED #define SND_PCM_INFO_COMPLEX SNDRV_PCM_INFO_COMPLEX #define SND_PCM_INFO_BLOCK_TRANSFER SNDRV_PCM_INFO_BLOCK_TRANSFER #define SND_PCM_INFO_OVERRANGE SNDRV_PCM_INFO_OVERRANGE #define SND_PCM_INFO_PAUSE SNDRV_PCM_INFO_PAUSE #define SND_PCM_INFO_HALF_DUPLEX SNDRV_PCM_INFO_HALF_DUPLEX #define SND_PCM_INFO_JOINT_DUPLEX SNDRV_PCM_INFO_JOINT_DUPLEX #define SND_PCM_INFO_SYNC_START SNDRV_PCM_INFO_SYNC_START #define SND_PCM_STATE_OPEN SNDRV_PCM_STATE_OPEN #define SND_PCM_STATE_SETUP SNDRV_PCM_STATE_SETUP #define SND_PCM_STATE_PREPARED SNDRV_PCM_STATE_PREPARED #define SND_PCM_STATE_RUNNING SNDRV_PCM_STATE_RUNNING #define SND_PCM_STATE_XRUN SNDRV_PCM_STATE_XRUN #define SND_PCM_STATE_DRAINING SNDRV_PCM_STATE_DRAINING #define SND_PCM_STATE_PAUSED SNDRV_PCM_STATE_PAUSED #define SND_PCM_STATE_LAST SNDRV_PCM_STATE_LAST #define SND_PCM_MMAP_OFFSET_DATA SNDRV_PCM_MMAP_OFFSET_DATA #define SND_PCM_MMAP_OFFSET_STATUS SNDRV_PCM_MMAP_OFFSET_STATUS #define SND_PCM_MMAP_OFFSET_CONTROL SNDRV_PCM_MMAP_OFFSET_CONTROL #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 SNDRV_PCM_HW_PARAM_LAST #define SND_PCM_HW_PARAMS_RUNTIME SNDRV_PCM_HW_PARAMS_RUNTIME #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 #define SND_PCM_START_DATA SNDRV_PCM_START_DATA #define SND_PCM_START_EXPLICIT SNDRV_PCM_START_EXPLICIT #define SND_PCM_START_LAST SNDRV_PCM_START_LAST #define SND_PCM_XRUN_NONE SNDRV_PCM_XRUN_NONE #define SND_PCM_XRUN_STOP SNDRV_PCM_XRUN_STOP #define SND_PCM_XRUN_LAST SNDRV_PCM_XRUN_LAST #define SND_PCM_TSTAMP_NONE SNDRV_PCM_TSTAMP_NONE #define SND_PCM_TSTAMP_MMAP SNDRV_PCM_TSTAMP_MMAP #define SND_PCM_TSTAMP_LAST SNDRV_PCM_TSTAMP_LAST #define SND_PCM_STATE_XXXX SNDRV_PCM_STATE_XXXX #define SND_PCM_NONBLOCK 0x0001 #define SND_PCM_ASYNC 0x0002 typedef struct _snd_mask snd_mask_t; typedef struct _snd_pcm snd_pcm_t; typedef enum _snd_pcm_type { SND_PCM_TYPE_HW, SND_PCM_TYPE_MULTI, SND_PCM_TYPE_FILE, SND_PCM_TYPE_NULL, SND_PCM_TYPE_SHM, SND_PCM_TYPE_INET, SND_PCM_TYPE_COPY, SND_PCM_TYPE_LINEAR, SND_PCM_TYPE_ALAW, SND_PCM_TYPE_MULAW, SND_PCM_TYPE_ADPCM, SND_PCM_TYPE_RATE, SND_PCM_TYPE_ROUTE, SND_PCM_TYPE_PLUG, SND_PCM_TYPE_SHARE, SND_PCM_TYPE_MIX, SND_PCM_TYPE_DROUTE, SND_PCM_TYPE_LBSERVER, } snd_pcm_type_t; typedef struct _snd_pcm_channel_area { void *addr; /* base address of channel samples */ unsigned int first; /* offset to first sample in bits */ unsigned int step; /* samples distance in bits */ } snd_pcm_channel_area_t; #ifdef __cplusplus extern "C" { #endif int snd_pcm_open(snd_pcm_t **pcm, char *name, int stream, int mode); /* Obsolete functions */ #define snd_pcm_write snd_pcm_writei #define snd_pcm_read snd_pcm_readi snd_pcm_sframes_t snd_pcm_writev(snd_pcm_t *pcm, const struct iovec *vector, int count); snd_pcm_sframes_t snd_pcm_readv(snd_pcm_t *pcm, const struct iovec *vector, int count); snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm); int snd_pcm_close(snd_pcm_t *pcm); int snd_pcm_poll_descriptor(snd_pcm_t *pcm); int snd_pcm_nonblock(snd_pcm_t *pcm, int nonblock); int snd_pcm_async(snd_pcm_t *pcm, int sig, pid_t pid); int snd_pcm_info(snd_pcm_t *pcm, snd_pcm_info_t *info); 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_free(snd_pcm_t *pcm); 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); int snd_pcm_state(snd_pcm_t *pcm); int snd_pcm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp); snd_pcm_sframes_t snd_pcm_rewind(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_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_dump(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2); int snd_pcm_unlink(snd_pcm_t *pcm); int snd_pcm_wait(snd_pcm_t *pcm, int timeout); snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm); int snd_pcm_set_avail_min(snd_pcm_t *pcm, snd_pcm_uframes_t size); /* Mask */ size_t snd_mask_sizeof(); #define snd_mask_alloca(maskp) ({(*maskp) = alloca(snd_mask_sizeof()); 0;}) int snd_mask_malloc(snd_mask_t **maskp); void snd_mask_free(snd_mask_t *mask); void snd_mask_none(snd_mask_t *mask); void snd_mask_any(snd_mask_t *mask); void snd_mask_set(snd_mask_t *mask, unsigned int val); void snd_mask_reset(snd_mask_t *mask, unsigned int val); void snd_mask_copy(snd_mask_t *dst, const snd_mask_t *src); /* HW params */ size_t snd_pcm_hw_params_sizeof(); #define snd_pcm_hw_params_alloca(paramsp) ({(*paramsp) = alloca(snd_pcm_hw_params_sizeof()); 0;}) int snd_pcm_hw_params_malloc(snd_pcm_hw_params_t **paramsp); int snd_pcm_hw_params_free(snd_pcm_hw_params_t *params); void snd_pcm_hw_params_copy(snd_pcm_hw_params_t *dst, const snd_pcm_hw_params_t *src); int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 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_test(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, unsigned int val); int snd_pcm_hw_param_setinteger(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); int snd_pcm_hw_param_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, int *dir); int snd_pcm_hw_param_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, int *dir); int snd_pcm_hw_param_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_min(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_max(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_minmax(snd_pcm_t *pcm, 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_set(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_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_mask_t *mask); int snd_pcm_hw_param_min_try(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_max_try(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_minmax_try(snd_pcm_t *pcm, 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_set_try(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_mask_try(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, const snd_mask_t *mask); int snd_pcm_hw_param_value(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, int *dir); unsigned int snd_pcm_hw_param_value_min(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, int *dir); unsigned int snd_pcm_hw_param_value_max(const snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var, int *dir); 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); int snd_pcm_hw_params_info_rate(const snd_pcm_hw_params_t *params, unsigned int *rate_num, unsigned int *rate_den); int snd_pcm_hw_params_info_msbits(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_info_flags(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_info_fifo_size(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_info_dig_groups(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out); 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); int 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_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); /* SW params */ typedef enum _snd_pcm_sw_param { SND_PCM_SW_PARAM_START_MODE, SND_PCM_SW_PARAM_XRUN_MODE, SND_PCM_SW_PARAM_TSTAMP_MODE, SND_PCM_SW_PARAM_PERIOD_STEP, SND_PCM_SW_PARAM_SLEEP_MIN, SND_PCM_SW_PARAM_AVAIL_MIN, SND_PCM_SW_PARAM_XFER_ALIGN, SND_PCM_SW_PARAM_SILENCE_THRESHOLD, SND_PCM_SW_PARAM_SILENCE_SIZE, SND_PCM_SW_PARAM_LAST = SND_PCM_SW_PARAM_SILENCE_SIZE, } snd_pcm_sw_param_t; size_t snd_pcm_sw_params_sizeof(); #define snd_pcm_sw_params_alloca(paramsp) ({(*paramsp) = alloca(snd_pcm_sw_params_sizeof()); 0;}) int snd_pcm_sw_params_malloc(snd_pcm_sw_params_t **paramsp); int snd_pcm_sw_params_free(snd_pcm_sw_params_t *params); void snd_pcm_sw_params_copy(snd_pcm_sw_params_t *dst, const snd_pcm_sw_params_t *src); int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params); int snd_pcm_sw_param_set(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_sw_param_t var, unsigned int val); int snd_pcm_sw_param_near(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_sw_param_t var, unsigned int val); int snd_pcm_sw_param_value(snd_pcm_sw_params_t *params, snd_pcm_sw_param_t var); int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out); /* Info */ size_t snd_pcm_info_sizeof(); #define snd_pcm_info_alloca(infop) ({(*infop) = alloca(snd_pcm_info_sizeof()); 0;}) int snd_pcm_info_malloc(snd_pcm_info_t **infop); int snd_pcm_info_free(snd_pcm_info_t *info); void snd_pcm_info_copy(snd_pcm_info_t *dst, const snd_pcm_info_t *src); void snd_pcm_info_set_device(snd_pcm_info_t *info, unsigned int device); void snd_pcm_info_set_subdevice(snd_pcm_info_t *info, unsigned int subdevice); void snd_pcm_info_set_stream(snd_pcm_info_t *info, snd_pcm_stream_t stream); int snd_pcm_info_card(snd_pcm_info_t *info); unsigned int snd_pcm_info_device(snd_pcm_info_t *info); unsigned int snd_pcm_info_subdevice(snd_pcm_info_t *info); snd_pcm_stream_t snd_pcm_info_stream(snd_pcm_info_t *info); const char *snd_pcm_info_device_id(snd_pcm_info_t *info); const char *snd_pcm_info_device_name(snd_pcm_info_t *info); const char *snd_pcm_info_subdevice_name(snd_pcm_info_t *info); snd_pcm_class_t snd_pcm_info_device_class(snd_pcm_info_t *info); snd_pcm_subclass_t snd_pcm_info_device_subclass(snd_pcm_info_t *info); unsigned int snd_pcm_info_subdevices_count(snd_pcm_info_t *info); unsigned int snd_pcm_info_subdevices_avail(snd_pcm_info_t *info); /* Status */ size_t snd_pcm_status_sizeof(); #define snd_pcm_status_alloca(statusp) ({(*statusp) = alloca(snd_pcm_status_sizeof()); 0;}) int snd_pcm_status_malloc(snd_pcm_status_t **statusp); int snd_pcm_status_free(snd_pcm_status_t *status); void snd_pcm_status_copy(snd_pcm_status_t *dst, const snd_pcm_status_t *src); snd_pcm_state_t snd_pcm_status_state(snd_pcm_status_t *status); int snd_pcm_status_delay(snd_pcm_status_t *status); int snd_pcm_status_avail(snd_pcm_status_t *status); int snd_pcm_status_avail_max(snd_pcm_status_t *status); void snd_pcm_status_tstamp(snd_pcm_status_t *status, snd_timestamp_t *tstamp); void snd_pcm_status_trigger_tstamp(snd_pcm_status_t *status, snd_timestamp_t *tstamp); int snd_pcm_status_dump(snd_pcm_status_t *status, snd_output_t *out); /* mmap */ const snd_pcm_channel_area_t *snd_pcm_mmap_areas(snd_pcm_t *pcm); const snd_pcm_channel_area_t *snd_pcm_mmap_running_areas(snd_pcm_t *pcm); const snd_pcm_channel_area_t *snd_pcm_mmap_stopped_areas(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_mmap_forward(snd_pcm_t *pcm, snd_pcm_uframes_t size); snd_pcm_uframes_t snd_pcm_mmap_offset(snd_pcm_t *pcm); snd_pcm_uframes_t snd_pcm_mmap_xfer(snd_pcm_t *pcm, snd_pcm_uframes_t size); 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); const char *snd_pcm_stream_name(snd_pcm_stream_t stream); const char *snd_pcm_hw_param_name(snd_pcm_hw_param_t var); const char *snd_pcm_sw_param_name(snd_pcm_sw_param_t var); const char *snd_pcm_access_name(snd_pcm_access_t access); const char *snd_pcm_format_name(snd_pcm_format_t format); const char *snd_pcm_subformat_name(snd_pcm_subformat_t subformat); const char *snd_pcm_format_description(snd_pcm_format_t format); int snd_pcm_format_value(const char* name); const char *snd_pcm_start_mode_name(snd_pcm_start_t mode); const char *snd_pcm_xrun_mode_name(snd_pcm_xrun_t mode); const char *snd_pcm_tstamp_mode_name(snd_pcm_tstamp_t mode); const char *snd_pcm_state_name(snd_pcm_state_t state); int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset, unsigned int samples, int 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, int 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, int 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, int format); 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); int snd_pcm_bytes_to_samples(snd_pcm_t *pcm, ssize_t bytes); ssize_t snd_pcm_samples_to_bytes(snd_pcm_t *pcm, int samples); /* misc */ int snd_pcm_format_signed(int format); int snd_pcm_format_unsigned(int format); int snd_pcm_format_linear(int format); int snd_pcm_format_little_endian(int format); int snd_pcm_format_big_endian(int format); int snd_pcm_format_cpu_endian(int format); int snd_pcm_format_width(int format); /* in bits */ int snd_pcm_format_physical_width(int format); /* in bits */ int snd_pcm_build_linear_format(int width, int unsignd, int big_endian); ssize_t snd_pcm_format_size(int format, size_t samples); u_int8_t snd_pcm_format_silence(int format); u_int16_t snd_pcm_format_silence_16(int format); u_int32_t snd_pcm_format_silence_32(int format); u_int64_t snd_pcm_format_silence_64(int format); int snd_pcm_format_set_silence(int format, void *buf, unsigned int samples); #ifdef __cplusplus } #endif