/**************************************************************************** * * * pcm.h * * Digital Audio Interface * * * ****************************************************************************/ /** * \defgroup PCM PCM Interface * The PCM Interface. * \{ */ /** dlsym version for interface entry callback */ #define SND_PCM_DLSYM_VERSION _dlsym_pcm_001 /** PCM generic info container */ typedef struct _snd_pcm_info snd_pcm_info_t; /** PCM hardware configuration space container */ typedef struct _snd_pcm_hw_params snd_pcm_hw_params_t; /** PCM software configuration container */ typedef struct _snd_pcm_sw_params snd_pcm_sw_params_t; /** PCM status container */ typedef struct _snd_pcm_status snd_pcm_status_t; /** PCM access types mask */ typedef struct _snd_pcm_access_mask snd_pcm_access_mask_t; /** PCM formats mask */ typedef struct _snd_pcm_format_mask snd_pcm_format_mask_t; /** PCM subformats mask */ typedef struct _snd_pcm_subformat_mask snd_pcm_subformat_mask_t; /** PCM class */ typedef enum _snd_pcm_class { /** standard device */ SND_PCM_CLASS_GENERIC = SNDRV_PCM_CLASS_GENERIC, /** multichannel device */ SND_PCM_CLASS_MULTI = SNDRV_PCM_CLASS_MULTI, /** software modem device */ SND_PCM_CLASS_MODEM = SNDRV_PCM_CLASS_MODEM, /** digitizer device */ SND_PCM_CLASS_DIGITIZER = SNDRV_PCM_CLASS_DIGITIZER, SND_PCM_CLASS_LAST = SNDRV_PCM_CLASS_LAST, } snd_pcm_class_t; /** PCM subclass */ typedef enum _snd_pcm_subclass { /** subdevices are mixed together */ SND_PCM_SUBCLASS_GENERIC_MIX = SNDRV_PCM_SUBCLASS_GENERIC_MIX, /** multichannel subdevices are mixed together */ SND_PCM_SUBCLASS_MULTI_MIX = SNDRV_PCM_SUBCLASS_MULTI_MIX, SND_PCM_SUBCLASS_LAST = SNDRV_PCM_SUBCLASS_LAST, } snd_pcm_subclass_t; /** PCM stream (direction) */ typedef enum _snd_pcm_stream { /** Playback stream */ SND_PCM_STREAM_PLAYBACK = SNDRV_PCM_STREAM_PLAYBACK, /** Capture stream */ SND_PCM_STREAM_CAPTURE = SNDRV_PCM_STREAM_CAPTURE, SND_PCM_STREAM_LAST = SNDRV_PCM_STREAM_LAST, } snd_pcm_stream_t; /** PCM access type */ typedef enum _snd_pcm_access { /** mmap access with simple interleaved channels */ SND_PCM_ACCESS_MMAP_INTERLEAVED = SNDRV_PCM_ACCESS_MMAP_INTERLEAVED, /** mmap access with simple non interleaved channels */ SND_PCM_ACCESS_MMAP_NONINTERLEAVED = SNDRV_PCM_ACCESS_MMAP_NONINTERLEAVED, /** mmap access with complex placement */ SND_PCM_ACCESS_MMAP_COMPLEX = SNDRV_PCM_ACCESS_MMAP_COMPLEX, /** snd_pcm_readi/snd_pcm_writei access */ SND_PCM_ACCESS_RW_INTERLEAVED = SNDRV_PCM_ACCESS_RW_INTERLEAVED, /** snd_pcm_readn/snd_pcm_writen access */ SND_PCM_ACCESS_RW_NONINTERLEAVED = SNDRV_PCM_ACCESS_RW_NONINTERLEAVED, SND_PCM_ACCESS_LAST = SNDRV_PCM_ACCESS_LAST, } snd_pcm_access_t; /** PCM sample format */ typedef enum _snd_pcm_format { /** Unknown */ SND_PCM_FORMAT_UNKNOWN = -1, /** Signed 8 bit */ SND_PCM_FORMAT_S8 = SNDRV_PCM_FORMAT_S8, /** Unsigned 8 bit */ SND_PCM_FORMAT_U8 = SNDRV_PCM_FORMAT_U8, /** Signed 16 bit Little Endian */ SND_PCM_FORMAT_S16_LE = SNDRV_PCM_FORMAT_S16_LE, /** Signed 16 bit Big Endian */ SND_PCM_FORMAT_S16_BE = SNDRV_PCM_FORMAT_S16_BE, /** Unsigned 16 bit Little Endian */ SND_PCM_FORMAT_U16_LE = SNDRV_PCM_FORMAT_U16_LE, /** Unsigned 16 bit Big Endian */ SND_PCM_FORMAT_U16_BE = SNDRV_PCM_FORMAT_U16_BE, /** Signed 24 bit Little Endian */ SND_PCM_FORMAT_S24_LE = SNDRV_PCM_FORMAT_S24_LE, /** Signed 24 bit Big Endian */ SND_PCM_FORMAT_S24_BE = SNDRV_PCM_FORMAT_S24_BE, /** Unsigned 24 bit Little Endian */ SND_PCM_FORMAT_U24_LE = SNDRV_PCM_FORMAT_U24_LE, /** Unsigned 24 bit Big Endian */ SND_PCM_FORMAT_U24_BE = SNDRV_PCM_FORMAT_U24_BE, /** Signed 32 bit Little Endian */ SND_PCM_FORMAT_S32_LE = SNDRV_PCM_FORMAT_S32_LE, /** Signed 32 bit Big Endian */ SND_PCM_FORMAT_S32_BE = SNDRV_PCM_FORMAT_S32_BE, /** Unsigned 32 bit Little Endian */ SND_PCM_FORMAT_U32_LE = SNDRV_PCM_FORMAT_U32_LE, /** Unsigned 32 bit Big Endian */ SND_PCM_FORMAT_U32_BE = SNDRV_PCM_FORMAT_U32_BE, /** Float 32 bit Little Endian */ SND_PCM_FORMAT_FLOAT_LE = SNDRV_PCM_FORMAT_FLOAT_LE, /** Float 32 bit Big Endian */ SND_PCM_FORMAT_FLOAT_BE = SNDRV_PCM_FORMAT_FLOAT_BE, /** Float 64 bit Little Endian */ SND_PCM_FORMAT_FLOAT64_LE = SNDRV_PCM_FORMAT_FLOAT64_LE, /** Float 64 bit Big Endian */ SND_PCM_FORMAT_FLOAT64_BE = SNDRV_PCM_FORMAT_FLOAT64_BE, /** IEC-958 Little Endian */ SND_PCM_FORMAT_IEC958_SUBFRAME_LE = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE, /** IEC-958 Big Endian */ SND_PCM_FORMAT_IEC958_SUBFRAME_BE = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, /** Mu-Law */ SND_PCM_FORMAT_MU_LAW = SNDRV_PCM_FORMAT_MU_LAW, /** A-Law */ SND_PCM_FORMAT_A_LAW = SNDRV_PCM_FORMAT_A_LAW, /** Ima-ADPCM */ SND_PCM_FORMAT_IMA_ADPCM = SNDRV_PCM_FORMAT_IMA_ADPCM, /** MPEG */ SND_PCM_FORMAT_MPEG = SNDRV_PCM_FORMAT_MPEG, /** GSM */ SND_PCM_FORMAT_GSM = SNDRV_PCM_FORMAT_GSM, /** Special */ SND_PCM_FORMAT_SPECIAL = SNDRV_PCM_FORMAT_SPECIAL, SND_PCM_FORMAT_LAST = SNDRV_PCM_FORMAT_LAST, /** Signed 16 bit CPU endian */ SND_PCM_FORMAT_S16 = SNDRV_PCM_FORMAT_S16, /** Unsigned 16 bit CPU endian */ SND_PCM_FORMAT_U16 = SNDRV_PCM_FORMAT_U16, /** Signed 24 bit CPU endian */ SND_PCM_FORMAT_S24 = SNDRV_PCM_FORMAT_S24, /** Unsigned 24 bit CPU endian */ SND_PCM_FORMAT_U24 = SNDRV_PCM_FORMAT_U24, /** Signed 32 bit CPU endian */ SND_PCM_FORMAT_S32 = SNDRV_PCM_FORMAT_S32, /** Unsigned 32 bit CPU endian */ SND_PCM_FORMAT_U32 = SNDRV_PCM_FORMAT_U32, /** Float 32 bit CPU endian */ SND_PCM_FORMAT_FLOAT = SNDRV_PCM_FORMAT_FLOAT, /** Float 64 bit CPU endian */ SND_PCM_FORMAT_FLOAT64 = SNDRV_PCM_FORMAT_FLOAT64, /** IEC-958 CPU Endian */ SND_PCM_FORMAT_IEC958_SUBFRAME = SNDRV_PCM_FORMAT_IEC958_SUBFRAME, } snd_pcm_format_t; /** PCM sample subformat */ typedef enum _snd_pcm_subformat { /** Standard */ SND_PCM_SUBFORMAT_STD = SNDRV_PCM_SUBFORMAT_STD, SND_PCM_SUBFORMAT_LAST = SNDRV_PCM_SUBFORMAT_LAST, } snd_pcm_subformat_t; /** PCM state */ typedef enum _snd_pcm_state { /** Open */ SND_PCM_STATE_OPEN = SNDRV_PCM_STATE_OPEN, /** Setup installed */ SND_PCM_STATE_SETUP = SNDRV_PCM_STATE_SETUP, /** Ready to start */ SND_PCM_STATE_PREPARED = SNDRV_PCM_STATE_PREPARED, /** Running */ SND_PCM_STATE_RUNNING = SNDRV_PCM_STATE_RUNNING, /** Stopped: underrun (playback) or overrun (capture) detected */ SND_PCM_STATE_XRUN = SNDRV_PCM_STATE_XRUN, /** Draining: running (playback) or stopped (capture) */ SND_PCM_STATE_DRAINING = SNDRV_PCM_STATE_DRAINING, /** Paused */ SND_PCM_STATE_PAUSED = SNDRV_PCM_STATE_PAUSED, SND_PCM_STATE_LAST = SNDRV_PCM_STATE_LAST, } snd_pcm_state_t; /** PCM start mode */ typedef enum _snd_pcm_start { /** Automatic start on data read/write */ SND_PCM_START_DATA, /** Explicit start */ SND_PCM_START_EXPLICIT, SND_PCM_START_LAST, } snd_pcm_start_t; /** PCM xrun mode */ typedef enum _snd_pcm_xrun { /** Xrun detection disabled */ SND_PCM_XRUN_NONE, /** Stop on xrun detection */ SND_PCM_XRUN_STOP, SND_PCM_XRUN_LAST, } snd_pcm_xrun_t; /** PCM timestamp mode */ typedef enum _snd_pcm_tstamp { /** No timestamp */ SND_PCM_TSTAMP_NONE = SNDRV_PCM_TSTAMP_NONE, /** Update mmap'ed timestamp */ SND_PCM_TSTAMP_MMAP = SNDRV_PCM_TSTAMP_MMAP, SND_PCM_TSTAMP_LAST = SNDRV_PCM_TSTAMP_LAST, } snd_pcm_tstamp_t; /** Unsigned frames quantity */ typedef sndrv_pcm_uframes_t snd_pcm_uframes_t; /** Signed frames quantity */ typedef sndrv_pcm_sframes_t snd_pcm_sframes_t; /** Timestamp */ typedef struct timeval snd_timestamp_t; /** Non blocking mode \hideinitializer */ #define SND_PCM_NONBLOCK 0x0001 /** Async notification \hideinitializer */ #define SND_PCM_ASYNC 0x0002 /** PCM handle */ typedef struct _snd_pcm snd_pcm_t; /** PCM type */ enum _snd_pcm_type { /** Kernel level PCM */ SND_PCM_TYPE_HW, /** Hooked PCM */ SND_PCM_TYPE_HOOKS, /** One ore more linked PCM with exclusive access to selected channels */ SND_PCM_TYPE_MULTI, /** File writing plugin */ SND_PCM_TYPE_FILE, /** Null endpoint PCM */ SND_PCM_TYPE_NULL, /** Shared memory client PCM */ SND_PCM_TYPE_SHM, /** INET client PCM (not yet implemented) */ SND_PCM_TYPE_INET, /** Copying plugin */ SND_PCM_TYPE_COPY, /** Linear format conversion PCM */ SND_PCM_TYPE_LINEAR, /** A-Law format conversion PCM */ SND_PCM_TYPE_ALAW, /** Mu-Law format conversion PCM */ SND_PCM_TYPE_MULAW, /** IMA-ADPCM format conversion PCM */ SND_PCM_TYPE_ADPCM, /** Rate conversion PCM */ SND_PCM_TYPE_RATE, /** Attenuated static route PCM */ SND_PCM_TYPE_ROUTE, /** Format adjusted PCM */ SND_PCM_TYPE_PLUG, /** Sharing PCM */ SND_PCM_TYPE_SHARE, /** Meter plugin */ SND_PCM_TYPE_METER, /** Mixing PCM */ SND_PCM_TYPE_MIX, /** Attenuated dynamic route PCM (not yet implemented) */ SND_PCM_TYPE_DROUTE, /** Loopback server plugin (not yet implemented) */ SND_PCM_TYPE_LBSERVER, /** Surround plugin */ SND_PCM_TYPE_SURROUND, }; /** PCM type */ typedef enum _snd_pcm_type snd_pcm_type_t; /** PCM area specification */ typedef struct _snd_pcm_channel_area { /** base address of channel samples */ void *addr; /** offset to first sample in bits */ unsigned int first; /** samples distance in bits */ unsigned int step; } snd_pcm_channel_area_t; /** #SND_PCM_TYPE_METER scope handle */ typedef struct _snd_pcm_scope snd_pcm_scope_t; #ifdef __cplusplus extern "C" { #endif int snd_pcm_open(snd_pcm_t **pcm, const char *name, snd_pcm_stream_t stream, int mode); int snd_pcm_close(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_nonblock(snd_pcm_t *pcm, int nonblock); 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(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); snd_pcm_state_t 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); 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); /* HW params */ 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_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_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_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); int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out); #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 int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params); 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); /* mmap */ 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); int snd_pcm_mmap_commit(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t frames); const char *snd_pcm_stream_name(snd_pcm_stream_t stream); 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_format_description(snd_pcm_format_t format); const char *snd_pcm_subformat_name(snd_pcm_subformat_t subformat); const char *snd_pcm_subformat_description(snd_pcm_subformat_t subformat); snd_pcm_format_t 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, 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); 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); /** #SND_PCM_TYPE_METER scope functions */ typedef struct _snd_pcm_scope_ops { /** \brief Enable and prepare it using current params * \param scope scope handle */ int (*enable)(snd_pcm_scope_t *scope); /** \brief Disable * \param scope scope handle */ void (*disable)(snd_pcm_scope_t *scope); /** \brief PCM has been started * \param scope scope handle */ void (*start)(snd_pcm_scope_t *scope); /** \brief PCM has been stopped * \param scope scope handle */ void (*stop)(snd_pcm_scope_t *scope); /** \brief New frames are present * \param scope scope handle */ void (*update)(snd_pcm_scope_t *scope); /** \brief Reset status * \param scope scope handle */ void (*reset)(snd_pcm_scope_t *scope); /** \brief PCM is closing * \param scope scope handle */ void (*close)(snd_pcm_scope_t *scope); } 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, 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); /* misc */ 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_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 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); 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) do { assert(ptr); *ptr = (snd_pcm_access_mask_t *) alloca(snd_pcm_access_mask_sizeof()); memset(*ptr, 0, snd_pcm_access_mask_sizeof()); } while (0) 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); 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); 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) do { assert(ptr); *ptr = (snd_pcm_format_mask_t *) alloca(snd_pcm_format_mask_sizeof()); memset(*ptr, 0, snd_pcm_format_mask_sizeof()); } while (0) 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); 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); 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) do { assert(ptr); *ptr = (snd_pcm_subformat_mask_t *) alloca(snd_pcm_subformat_mask_sizeof()); memset(*ptr, 0, snd_pcm_subformat_mask_sizeof()); } while (0) 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); 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); 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) do { assert(ptr); *ptr = (snd_pcm_hw_params_t *) alloca(snd_pcm_hw_params_sizeof()); memset(*ptr, 0, snd_pcm_hw_params_sizeof()); } while (0) 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); int snd_pcm_hw_params_get_access(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t val); int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t val); snd_pcm_access_t snd_pcm_hw_params_set_access_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); snd_pcm_access_t snd_pcm_hw_params_set_access_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask); void 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); 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); snd_pcm_format_t snd_pcm_hw_params_set_format_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); snd_pcm_format_t snd_pcm_hw_params_set_format_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 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_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t val); int snd_pcm_hw_params_get_subformat(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t val); snd_pcm_subformat_t snd_pcm_hw_params_set_subformat_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); snd_pcm_subformat_t snd_pcm_hw_params_set_subformat_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); 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 snd_pcm_hw_params_get_channels_min(const snd_pcm_hw_params_t *params); unsigned int snd_pcm_hw_params_get_channels_max(const snd_pcm_hw_params_t *params); 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); unsigned int snd_pcm_hw_params_set_channels_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); unsigned int snd_pcm_hw_params_set_channels_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); unsigned int snd_pcm_hw_params_set_channels_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_get_rate(const snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_get_rate_min(const snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_get_rate_max(const snd_pcm_hw_params_t *params, 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); unsigned int snd_pcm_hw_params_set_rate_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int *dir); unsigned int snd_pcm_hw_params_set_rate_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_set_rate_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); int snd_pcm_hw_params_get_period_time(const snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_get_period_time_min(const snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_get_period_time_max(const snd_pcm_hw_params_t *params, 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); unsigned int snd_pcm_hw_params_set_period_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int *dir); unsigned int snd_pcm_hw_params_set_period_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_set_period_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); snd_pcm_sframes_t snd_pcm_hw_params_get_period_size(const snd_pcm_hw_params_t *params, int *dir); snd_pcm_uframes_t snd_pcm_hw_params_get_period_size_min(const snd_pcm_hw_params_t *params, int *dir); snd_pcm_uframes_t snd_pcm_hw_params_get_period_size_max(const snd_pcm_hw_params_t *params, 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); snd_pcm_uframes_t 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); snd_pcm_uframes_t snd_pcm_hw_params_set_period_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); snd_pcm_uframes_t snd_pcm_hw_params_set_period_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 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, int *dir); unsigned int snd_pcm_hw_params_get_periods_min(const snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_get_periods_max(const snd_pcm_hw_params_t *params, 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); unsigned int snd_pcm_hw_params_set_periods_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int *dir); unsigned int snd_pcm_hw_params_set_periods_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_set_periods_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, 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, int *dir); unsigned int snd_pcm_hw_params_get_buffer_time_min(const snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_get_buffer_time_max(const snd_pcm_hw_params_t *params, 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); unsigned int snd_pcm_hw_params_set_buffer_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int *dir); unsigned int snd_pcm_hw_params_set_buffer_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_set_buffer_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); snd_pcm_sframes_t snd_pcm_hw_params_get_buffer_size(const snd_pcm_hw_params_t *params); snd_pcm_uframes_t snd_pcm_hw_params_get_buffer_size_min(const snd_pcm_hw_params_t *params); snd_pcm_uframes_t snd_pcm_hw_params_get_buffer_size_max(const snd_pcm_hw_params_t *params); 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); snd_pcm_uframes_t snd_pcm_hw_params_set_buffer_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val); snd_pcm_uframes_t snd_pcm_hw_params_set_buffer_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); snd_pcm_uframes_t snd_pcm_hw_params_set_buffer_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_get_tick_time(const snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_get_tick_time_min(const snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_get_tick_time_max(const snd_pcm_hw_params_t *params, int *dir); int snd_pcm_hw_params_test_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_tick_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_tick_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); 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); unsigned int snd_pcm_hw_params_set_tick_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int *dir); unsigned int snd_pcm_hw_params_set_tick_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); unsigned int snd_pcm_hw_params_set_tick_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, int *dir); 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) do { assert(ptr); *ptr = (snd_pcm_sw_params_t *) alloca(snd_pcm_sw_params_sizeof()); memset(*ptr, 0, snd_pcm_sw_params_sizeof()); } while (0) 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_set_start_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_start_t val); snd_pcm_start_t snd_pcm_sw_params_get_start_mode(const snd_pcm_sw_params_t *params); int snd_pcm_sw_params_set_xrun_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_xrun_t val); snd_pcm_xrun_t snd_pcm_sw_params_get_xrun_mode(const snd_pcm_sw_params_t *params); int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val); snd_pcm_tstamp_t snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params); #if 0 int snd_pcm_sw_params_set_period_step(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val); unsigned int snd_pcm_sw_params_get_period_step(const snd_pcm_sw_params_t *params); #endif int snd_pcm_sw_params_set_sleep_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val); unsigned int snd_pcm_sw_params_get_sleep_min(const snd_pcm_sw_params_t *params); int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); snd_pcm_uframes_t snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params); int snd_pcm_sw_params_set_xfer_align(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); snd_pcm_uframes_t snd_pcm_sw_params_get_xfer_align(const snd_pcm_sw_params_t *params); int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); snd_pcm_uframes_t snd_pcm_sw_params_get_start_threshold(const snd_pcm_sw_params_t *params); int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); snd_pcm_uframes_t snd_pcm_sw_params_get_stop_threshold(const snd_pcm_sw_params_t *params); int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); snd_pcm_uframes_t snd_pcm_sw_params_get_silence_threshold(const snd_pcm_sw_params_t *params); int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); snd_pcm_uframes_t snd_pcm_sw_params_get_silence_size(const snd_pcm_sw_params_t *params); 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) do { assert(ptr); *ptr = (snd_pcm_status_t *) alloca(snd_pcm_status_sizeof()); memset(*ptr, 0, snd_pcm_status_sizeof()); } while (0) 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_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr); 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); 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) do { assert(ptr); *ptr = (snd_pcm_info_t *) alloca(snd_pcm_info_sizeof()); memset(*ptr, 0, snd_pcm_info_sizeof()); } while (0) 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); 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); /** type of pcm hook */ typedef enum _snd_pcm_hook_type { SND_PCM_HOOK_TYPE_HW_PARAMS, SND_PCM_HOOK_TYPE_HW_FREE, SND_PCM_HOOK_TYPE_CLOSE, SND_PCM_HOOK_TYPE_LAST = SND_PCM_HOOK_TYPE_CLOSE, } snd_pcm_hook_type_t; /** PCM hook container */ typedef struct _snd_pcm_hook snd_pcm_hook_t; /** PCM hook callback function */ typedef int (*snd_pcm_hook_func_t)(snd_pcm_hook_t *hook); 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); #ifdef __cplusplus } #endif /** \} */