/** * \file include/pcm.h * \brief Application interface library for the ALSA driver * \author Jaroslav Kysela * \author Abramo Bagnara * \author Takashi Iwai * \date 1998-2001 * * Application interface library for the ALSA driver. * See the \ref pcm page for more details. */ /* * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * */ #ifndef __ALSA_PCM_H #define __ALSA_PCM_H #ifdef __cplusplus extern "C" { #endif #include /** * \defgroup PCM PCM Interface * See the \ref pcm page for more details. * \{ */ /** 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 * * snd_pcm_hw_params_t is an opaque structure which contains a set of possible * PCM hardware configurations. For example, a given instance might include a * range of buffer sizes, a range of period sizes, and a set of several sample * formats. Some subset of all possible combinations these sets may be valid, * but not necessarily any combination will be valid. * * When a parameter is set or restricted using a snd_pcm_hw_params_set* * function, all of the other ranges will be updated to exclude as many * impossible configurations as possible. Attempting to set a parameter * outside of its acceptable range will result in the function failing * and an error code being returned. */ 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 = 0, /** multichannel device */ SND_PCM_CLASS_MULTI, /** software modem device */ SND_PCM_CLASS_MODEM, /** digitizer device */ SND_PCM_CLASS_DIGITIZER, SND_PCM_CLASS_LAST = SND_PCM_CLASS_DIGITIZER } snd_pcm_class_t; /** PCM subclass */ typedef enum _snd_pcm_subclass { /** subdevices are mixed together */ SND_PCM_SUBCLASS_GENERIC_MIX = 0, /** multichannel subdevices are mixed together */ SND_PCM_SUBCLASS_MULTI_MIX, SND_PCM_SUBCLASS_LAST = SND_PCM_SUBCLASS_MULTI_MIX } snd_pcm_subclass_t; /** PCM stream (direction) */ typedef enum _snd_pcm_stream { /** Playback stream */ SND_PCM_STREAM_PLAYBACK = 0, /** Capture stream */ SND_PCM_STREAM_CAPTURE, SND_PCM_STREAM_LAST = SND_PCM_STREAM_CAPTURE } snd_pcm_stream_t; /** PCM access type */ typedef enum _snd_pcm_access { /** mmap access with simple interleaved channels */ SND_PCM_ACCESS_MMAP_INTERLEAVED = 0, /** mmap access with simple non interleaved channels */ SND_PCM_ACCESS_MMAP_NONINTERLEAVED, /** mmap access with complex placement */ SND_PCM_ACCESS_MMAP_COMPLEX, /** snd_pcm_readi/snd_pcm_writei access */ SND_PCM_ACCESS_RW_INTERLEAVED, /** snd_pcm_readn/snd_pcm_writen access */ SND_PCM_ACCESS_RW_NONINTERLEAVED, SND_PCM_ACCESS_LAST = SND_PCM_ACCESS_RW_NONINTERLEAVED } 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 = 0, /** Unsigned 8 bit */ SND_PCM_FORMAT_U8, /** Signed 16 bit Little Endian */ SND_PCM_FORMAT_S16_LE, /** Signed 16 bit Big Endian */ SND_PCM_FORMAT_S16_BE, /** Unsigned 16 bit Little Endian */ SND_PCM_FORMAT_U16_LE, /** Unsigned 16 bit Big Endian */ SND_PCM_FORMAT_U16_BE, /** Signed 24 bit Little Endian using low three bytes in 32-bit word */ SND_PCM_FORMAT_S24_LE, /** Signed 24 bit Big Endian using low three bytes in 32-bit word */ SND_PCM_FORMAT_S24_BE, /** Unsigned 24 bit Little Endian using low three bytes in 32-bit word */ SND_PCM_FORMAT_U24_LE, /** Unsigned 24 bit Big Endian using low three bytes in 32-bit word */ SND_PCM_FORMAT_U24_BE, /** Signed 32 bit Little Endian */ SND_PCM_FORMAT_S32_LE, /** Signed 32 bit Big Endian */ SND_PCM_FORMAT_S32_BE, /** Unsigned 32 bit Little Endian */ SND_PCM_FORMAT_U32_LE, /** Unsigned 32 bit Big Endian */ SND_PCM_FORMAT_U32_BE, /** Float 32 bit Little Endian, Range -1.0 to 1.0 */ SND_PCM_FORMAT_FLOAT_LE, /** Float 32 bit Big Endian, Range -1.0 to 1.0 */ SND_PCM_FORMAT_FLOAT_BE, /** Float 64 bit Little Endian, Range -1.0 to 1.0 */ SND_PCM_FORMAT_FLOAT64_LE, /** Float 64 bit Big Endian, Range -1.0 to 1.0 */ SND_PCM_FORMAT_FLOAT64_BE, /** IEC-958 Little Endian */ SND_PCM_FORMAT_IEC958_SUBFRAME_LE, /** IEC-958 Big Endian */ SND_PCM_FORMAT_IEC958_SUBFRAME_BE, /** Mu-Law */ SND_PCM_FORMAT_MU_LAW, /** A-Law */ SND_PCM_FORMAT_A_LAW, /** Ima-ADPCM */ SND_PCM_FORMAT_IMA_ADPCM, /** MPEG */ SND_PCM_FORMAT_MPEG, /** GSM */ SND_PCM_FORMAT_GSM, /** Signed 20bit Little Endian in 4bytes format, LSB justified */ SND_PCM_FORMAT_S20_LE, /** Signed 20bit Big Endian in 4bytes format, LSB justified */ SND_PCM_FORMAT_S20_BE, /** Unsigned 20bit Little Endian in 4bytes format, LSB justified */ SND_PCM_FORMAT_U20_LE, /** Unsigned 20bit Big Endian in 4bytes format, LSB justified */ SND_PCM_FORMAT_U20_BE, /** Special */ SND_PCM_FORMAT_SPECIAL = 31, /** Signed 24bit Little Endian in 3bytes format */ SND_PCM_FORMAT_S24_3LE = 32, /** Signed 24bit Big Endian in 3bytes format */ SND_PCM_FORMAT_S24_3BE, /** Unsigned 24bit Little Endian in 3bytes format */ SND_PCM_FORMAT_U24_3LE, /** Unsigned 24bit Big Endian in 3bytes format */ SND_PCM_FORMAT_U24_3BE, /** Signed 20bit Little Endian in 3bytes format */ SND_PCM_FORMAT_S20_3LE, /** Signed 20bit Big Endian in 3bytes format */ SND_PCM_FORMAT_S20_3BE, /** Unsigned 20bit Little Endian in 3bytes format */ SND_PCM_FORMAT_U20_3LE, /** Unsigned 20bit Big Endian in 3bytes format */ SND_PCM_FORMAT_U20_3BE, /** Signed 18bit Little Endian in 3bytes format */ SND_PCM_FORMAT_S18_3LE, /** Signed 18bit Big Endian in 3bytes format */ SND_PCM_FORMAT_S18_3BE, /** Unsigned 18bit Little Endian in 3bytes format */ SND_PCM_FORMAT_U18_3LE, /** Unsigned 18bit Big Endian in 3bytes format */ SND_PCM_FORMAT_U18_3BE, /* G.723 (ADPCM) 24 kbit/s, 8 samples in 3 bytes */ SND_PCM_FORMAT_G723_24, /* G.723 (ADPCM) 24 kbit/s, 1 sample in 1 byte */ SND_PCM_FORMAT_G723_24_1B, /* G.723 (ADPCM) 40 kbit/s, 8 samples in 3 bytes */ SND_PCM_FORMAT_G723_40, /* G.723 (ADPCM) 40 kbit/s, 1 sample in 1 byte */ SND_PCM_FORMAT_G723_40_1B, /* Direct Stream Digital (DSD) in 1-byte samples (x8) */ SND_PCM_FORMAT_DSD_U8, /* Direct Stream Digital (DSD) in 2-byte samples (x16) */ SND_PCM_FORMAT_DSD_U16_LE, /* Direct Stream Digital (DSD) in 4-byte samples (x32) */ SND_PCM_FORMAT_DSD_U32_LE, /* Direct Stream Digital (DSD) in 2-byte samples (x16) */ SND_PCM_FORMAT_DSD_U16_BE, /* Direct Stream Digital (DSD) in 4-byte samples (x32) */ SND_PCM_FORMAT_DSD_U32_BE, SND_PCM_FORMAT_LAST = SND_PCM_FORMAT_DSD_U32_BE, #if __BYTE_ORDER == __LITTLE_ENDIAN /** Signed 16 bit CPU endian */ SND_PCM_FORMAT_S16 = SND_PCM_FORMAT_S16_LE, /** Unsigned 16 bit CPU endian */ SND_PCM_FORMAT_U16 = SND_PCM_FORMAT_U16_LE, /** Signed 24 bit CPU endian */ SND_PCM_FORMAT_S24 = SND_PCM_FORMAT_S24_LE, /** Unsigned 24 bit CPU endian */ SND_PCM_FORMAT_U24 = SND_PCM_FORMAT_U24_LE, /** Signed 32 bit CPU endian */ SND_PCM_FORMAT_S32 = SND_PCM_FORMAT_S32_LE, /** Unsigned 32 bit CPU endian */ SND_PCM_FORMAT_U32 = SND_PCM_FORMAT_U32_LE, /** Float 32 bit CPU endian */ SND_PCM_FORMAT_FLOAT = SND_PCM_FORMAT_FLOAT_LE, /** Float 64 bit CPU endian */ SND_PCM_FORMAT_FLOAT64 = SND_PCM_FORMAT_FLOAT64_LE, /** IEC-958 CPU Endian */ SND_PCM_FORMAT_IEC958_SUBFRAME = SND_PCM_FORMAT_IEC958_SUBFRAME_LE, /** Signed 20bit in 4bytes format, LSB justified, CPU Endian */ SND_PCM_FORMAT_S20 = SND_PCM_FORMAT_S20_LE, /** Unsigned 20bit in 4bytes format, LSB justified, CPU Endian */ SND_PCM_FORMAT_U20 = SND_PCM_FORMAT_U20_LE, #elif __BYTE_ORDER == __BIG_ENDIAN /** Signed 16 bit CPU endian */ SND_PCM_FORMAT_S16 = SND_PCM_FORMAT_S16_BE, /** Unsigned 16 bit CPU endian */ SND_PCM_FORMAT_U16 = SND_PCM_FORMAT_U16_BE, /** Signed 24 bit CPU endian */ SND_PCM_FORMAT_S24 = SND_PCM_FORMAT_S24_BE, /** Unsigned 24 bit CPU endian */ SND_PCM_FORMAT_U24 = SND_PCM_FORMAT_U24_BE, /** Signed 32 bit CPU endian */ SND_PCM_FORMAT_S32 = SND_PCM_FORMAT_S32_BE, /** Unsigned 32 bit CPU endian */ SND_PCM_FORMAT_U32 = SND_PCM_FORMAT_U32_BE, /** Float 32 bit CPU endian */ SND_PCM_FORMAT_FLOAT = SND_PCM_FORMAT_FLOAT_BE, /** Float 64 bit CPU endian */ SND_PCM_FORMAT_FLOAT64 = SND_PCM_FORMAT_FLOAT64_BE, /** IEC-958 CPU Endian */ SND_PCM_FORMAT_IEC958_SUBFRAME = SND_PCM_FORMAT_IEC958_SUBFRAME_BE, /** Signed 20bit in 4bytes format, LSB justified, CPU Endian */ SND_PCM_FORMAT_S20 = SND_PCM_FORMAT_S20_BE, /** Unsigned 20bit in 4bytes format, LSB justified, CPU Endian */ SND_PCM_FORMAT_U20 = SND_PCM_FORMAT_U20_BE, #else #error "Unknown endian" #endif } snd_pcm_format_t; /** PCM sample subformat */ typedef enum _snd_pcm_subformat { /** Standard */ SND_PCM_SUBFORMAT_STD = 0, SND_PCM_SUBFORMAT_LAST = SND_PCM_SUBFORMAT_STD } snd_pcm_subformat_t; /** PCM state */ typedef enum _snd_pcm_state { /** Open */ SND_PCM_STATE_OPEN = 0, /** Setup installed */ SND_PCM_STATE_SETUP, /** Ready to start */ SND_PCM_STATE_PREPARED, /** Running */ SND_PCM_STATE_RUNNING, /** Stopped: underrun (playback) or overrun (capture) detected */ SND_PCM_STATE_XRUN, /** Draining: running (playback) or stopped (capture) */ SND_PCM_STATE_DRAINING, /** Paused */ SND_PCM_STATE_PAUSED, /** Hardware is suspended */ SND_PCM_STATE_SUSPENDED, /** Hardware is disconnected */ SND_PCM_STATE_DISCONNECTED, SND_PCM_STATE_LAST = SND_PCM_STATE_DISCONNECTED, /** Private - used internally in the library - do not use*/ SND_PCM_STATE_PRIVATE1 = 1024 } snd_pcm_state_t; /** PCM start mode */ typedef enum _snd_pcm_start { /** Automatic start on data read/write */ SND_PCM_START_DATA = 0, /** Explicit start */ SND_PCM_START_EXPLICIT, SND_PCM_START_LAST = SND_PCM_START_EXPLICIT } snd_pcm_start_t; /** PCM xrun mode */ typedef enum _snd_pcm_xrun { /** Xrun detection disabled */ SND_PCM_XRUN_NONE = 0, /** Stop on xrun detection */ SND_PCM_XRUN_STOP, SND_PCM_XRUN_LAST = SND_PCM_XRUN_STOP } snd_pcm_xrun_t; /** PCM timestamp mode */ typedef enum _snd_pcm_tstamp { /** No timestamp */ SND_PCM_TSTAMP_NONE = 0, /** Update timestamp at every hardware position update */ SND_PCM_TSTAMP_ENABLE, /** Equivalent with #SND_PCM_TSTAMP_ENABLE, * just for compatibility with older versions */ SND_PCM_TSTAMP_MMAP = SND_PCM_TSTAMP_ENABLE, SND_PCM_TSTAMP_LAST = SND_PCM_TSTAMP_ENABLE } snd_pcm_tstamp_t; typedef enum _snd_pcm_tstamp_type { SND_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0, /**< gettimeofday equivalent */ SND_PCM_TSTAMP_TYPE_MONOTONIC, /**< posix_clock_monotonic equivalent */ SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW, /**< monotonic_raw (no NTP) */ SND_PCM_TSTAMP_TYPE_LAST = SND_PCM_TSTAMP_TYPE_MONOTONIC_RAW, } snd_pcm_tstamp_type_t; typedef enum _snd_pcm_audio_tstamp_type { /** * first definition for backwards compatibility only, * maps to wallclock/link time for HDAudio playback and DEFAULT/DMA time for everything else */ SND_PCM_AUDIO_TSTAMP_TYPE_COMPAT = 0, SND_PCM_AUDIO_TSTAMP_TYPE_DEFAULT = 1, /**< DMA time, reported as per hw_ptr */ SND_PCM_AUDIO_TSTAMP_TYPE_LINK = 2, /**< link time reported by sample or wallclock counter, reset on startup */ SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ABSOLUTE = 3, /**< link time reported by sample or wallclock counter, not reset on startup */ SND_PCM_AUDIO_TSTAMP_TYPE_LINK_ESTIMATED = 4, /**< link time estimated indirectly */ SND_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED = 5, /**< link time synchronized with system time */ SND_PCM_AUDIO_TSTAMP_TYPE_LAST = SND_PCM_AUDIO_TSTAMP_TYPE_LINK_SYNCHRONIZED } snd_pcm_audio_tstamp_type_t; typedef struct _snd_pcm_audio_tstamp_config { /* 5 of max 16 bits used */ unsigned int type_requested:4; unsigned int report_delay:1; /* add total delay to A/D or D/A */ } snd_pcm_audio_tstamp_config_t; typedef struct _snd_pcm_audio_tstamp_report { /* 6 of max 16 bits used for bit-fields */ /* for backwards compatibility */ unsigned int valid:1; /* actual type if hardware could not support requested timestamp */ unsigned int actual_type:4; /* accuracy represented in ns units */ unsigned int accuracy_report:1; /* 0 if accuracy unknown, 1 if accuracy field is valid */ unsigned int accuracy; /* up to 4.29s, will be packed in separate field */ } snd_pcm_audio_tstamp_report_t; /** Unsigned frames quantity */ typedef unsigned long snd_pcm_uframes_t; /** Signed frames quantity */ typedef long snd_pcm_sframes_t; /** Non blocking mode (flag for open mode) \hideinitializer */ #define SND_PCM_NONBLOCK 0x00000001 /** Async notification (flag for open mode) \hideinitializer */ #define SND_PCM_ASYNC 0x00000002 /** In an abort state (internal, not allowed for open) */ #define SND_PCM_ABORT 0x00008000 /** Disable automatic (but not forced!) rate resamplinig */ #define SND_PCM_NO_AUTO_RESAMPLE 0x00010000 /** Disable automatic (but not forced!) channel conversion */ #define SND_PCM_NO_AUTO_CHANNELS 0x00020000 /** Disable automatic (but not forced!) format conversion */ #define SND_PCM_NO_AUTO_FORMAT 0x00040000 /** Disable soft volume control */ #define SND_PCM_NO_SOFTVOL 0x00080000 /** PCM handle */ typedef struct _snd_pcm snd_pcm_t; /** PCM type */ enum _snd_pcm_type { /** Kernel level PCM */ SND_PCM_TYPE_HW = 0, /** Hooked PCM */ SND_PCM_TYPE_HOOKS, /** One or 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, /** Linear Integer <-> Linear Float format conversion PCM */ SND_PCM_TYPE_LINEAR_FLOAT, /** LADSPA integration plugin */ SND_PCM_TYPE_LADSPA, /** Direct Mixing plugin */ SND_PCM_TYPE_DMIX, /** Jack Audio Connection Kit plugin */ SND_PCM_TYPE_JACK, /** Direct Snooping plugin */ SND_PCM_TYPE_DSNOOP, /** Direct Sharing plugin */ SND_PCM_TYPE_DSHARE, /** IEC958 subframe plugin */ SND_PCM_TYPE_IEC958, /** Soft volume plugin */ SND_PCM_TYPE_SOFTVOL, /** External I/O plugin */ SND_PCM_TYPE_IOPLUG, /** External filter plugin */ SND_PCM_TYPE_EXTPLUG, /** Mmap-emulation plugin */ SND_PCM_TYPE_MMAP_EMUL, SND_PCM_TYPE_LAST = SND_PCM_TYPE_MMAP_EMUL }; /** 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; /** PCM synchronization ID */ typedef union _snd_pcm_sync_id { /** 8-bit ID */ unsigned char id[16]; /** 16-bit ID */ unsigned short id16[8]; /** 32-bit ID */ unsigned int id32[4]; } snd_pcm_sync_id_t; /** #SND_PCM_TYPE_METER scope handle */ typedef struct _snd_pcm_scope snd_pcm_scope_t; int snd_pcm_open(snd_pcm_t **pcm, const char *name, snd_pcm_stream_t stream, int mode); int snd_pcm_open_lconf(snd_pcm_t **pcm, const char *name, snd_pcm_stream_t stream, int mode, snd_config_t *lconf); int snd_pcm_open_fallback(snd_pcm_t **pcm, snd_config_t *root, const char *name, const char *orig_name, snd_pcm_stream_t stream, int mode); int snd_pcm_close(snd_pcm_t *pcm); const char *snd_pcm_name(snd_pcm_t *pcm); snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm); snd_pcm_stream_t snd_pcm_stream(snd_pcm_t *pcm); int snd_pcm_poll_descriptors_count(snd_pcm_t *pcm); int snd_pcm_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space); int snd_pcm_poll_descriptors_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); int snd_pcm_nonblock(snd_pcm_t *pcm, int nonblock); static __inline__ int snd_pcm_abort(snd_pcm_t *pcm) { return snd_pcm_nonblock(pcm, 2); } int snd_async_add_pcm_handler(snd_async_handler_t **handler, snd_pcm_t *pcm, snd_async_callback_t callback, void *private_data); snd_pcm_t *snd_async_handler_get_pcm(snd_async_handler_t *handler); int snd_pcm_info(snd_pcm_t *pcm, snd_pcm_info_t *info); int snd_pcm_hw_params_current(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_free(snd_pcm_t *pcm); int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params); int snd_pcm_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params); int snd_pcm_prepare(snd_pcm_t *pcm); int snd_pcm_reset(snd_pcm_t *pcm); int snd_pcm_status(snd_pcm_t *pcm, snd_pcm_status_t *status); int snd_pcm_start(snd_pcm_t *pcm); int snd_pcm_drop(snd_pcm_t *pcm); int snd_pcm_drain(snd_pcm_t *pcm); int snd_pcm_pause(snd_pcm_t *pcm, int enable); snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm); int snd_pcm_hwsync(snd_pcm_t *pcm); int snd_pcm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp); int snd_pcm_resume(snd_pcm_t *pcm); int snd_pcm_htimestamp(snd_pcm_t *pcm, snd_pcm_uframes_t *avail, snd_htimestamp_t *tstamp); snd_pcm_sframes_t snd_pcm_avail(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm); int snd_pcm_avail_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *availp, snd_pcm_sframes_t *delayp); snd_pcm_sframes_t snd_pcm_rewindable(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames); snd_pcm_sframes_t snd_pcm_forwardable(snd_pcm_t *pcm); snd_pcm_sframes_t snd_pcm_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames); snd_pcm_sframes_t snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); int snd_pcm_wait(snd_pcm_t *pcm, int timeout); int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2); int snd_pcm_unlink(snd_pcm_t *pcm); /** channel mapping API version number */ #define SND_CHMAP_API_VERSION ((1 << 16) | (0 << 8) | 1) /** channel map list type */ enum snd_pcm_chmap_type { SND_CHMAP_TYPE_NONE = 0,/**< unspecified channel position */ SND_CHMAP_TYPE_FIXED, /**< fixed channel position */ SND_CHMAP_TYPE_VAR, /**< freely swappable channel position */ SND_CHMAP_TYPE_PAIRED, /**< pair-wise swappable channel position */ SND_CHMAP_TYPE_LAST = SND_CHMAP_TYPE_PAIRED, /**< last entry */ }; /** channel positions */ enum snd_pcm_chmap_position { SND_CHMAP_UNKNOWN = 0, /**< unspecified */ SND_CHMAP_NA, /**< N/A, silent */ SND_CHMAP_MONO, /**< mono stream */ SND_CHMAP_FL, /**< front left */ SND_CHMAP_FR, /**< front right */ SND_CHMAP_RL, /**< rear left */ SND_CHMAP_RR, /**< rear right */ SND_CHMAP_FC, /**< front center */ SND_CHMAP_LFE, /**< LFE */ SND_CHMAP_SL, /**< side left */ SND_CHMAP_SR, /**< side right */ SND_CHMAP_RC, /**< rear center */ SND_CHMAP_FLC, /**< front left center */ SND_CHMAP_FRC, /**< front right center */ SND_CHMAP_RLC, /**< rear left center */ SND_CHMAP_RRC, /**< rear right center */ SND_CHMAP_FLW, /**< front left wide */ SND_CHMAP_FRW, /**< front right wide */ SND_CHMAP_FLH, /**< front left high */ SND_CHMAP_FCH, /**< front center high */ SND_CHMAP_FRH, /**< front right high */ SND_CHMAP_TC, /**< top center */ SND_CHMAP_TFL, /**< top front left */ SND_CHMAP_TFR, /**< top front right */ SND_CHMAP_TFC, /**< top front center */ SND_CHMAP_TRL, /**< top rear left */ SND_CHMAP_TRR, /**< top rear right */ SND_CHMAP_TRC, /**< top rear center */ SND_CHMAP_TFLC, /**< top front left center */ SND_CHMAP_TFRC, /**< top front right center */ SND_CHMAP_TSL, /**< top side left */ SND_CHMAP_TSR, /**< top side right */ SND_CHMAP_LLFE, /**< left LFE */ SND_CHMAP_RLFE, /**< right LFE */ SND_CHMAP_BC, /**< bottom center */ SND_CHMAP_BLC, /**< bottom left center */ SND_CHMAP_BRC, /**< bottom right center */ SND_CHMAP_LAST = SND_CHMAP_BRC, }; /** bitmask for channel position */ #define SND_CHMAP_POSITION_MASK 0xffff /** bit flag indicating the channel is phase inverted */ #define SND_CHMAP_PHASE_INVERSE (0x01 << 16) /** bit flag indicating the non-standard channel value */ #define SND_CHMAP_DRIVER_SPEC (0x02 << 16) /** the channel map header */ typedef struct snd_pcm_chmap { unsigned int channels; /**< number of channels */ unsigned int pos[0]; /**< channel position array */ } snd_pcm_chmap_t; /** the header of array items returned from snd_pcm_query_chmaps() */ typedef struct snd_pcm_chmap_query { enum snd_pcm_chmap_type type; /**< channel map type */ snd_pcm_chmap_t map; /**< available channel map */ } snd_pcm_chmap_query_t; snd_pcm_chmap_query_t **snd_pcm_query_chmaps(snd_pcm_t *pcm); snd_pcm_chmap_query_t **snd_pcm_query_chmaps_from_hw(int card, int dev, int subdev, snd_pcm_stream_t stream); void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps); snd_pcm_chmap_t *snd_pcm_get_chmap(snd_pcm_t *pcm); int snd_pcm_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map); const char *snd_pcm_chmap_type_name(enum snd_pcm_chmap_type val); const char *snd_pcm_chmap_name(enum snd_pcm_chmap_position val); const char *snd_pcm_chmap_long_name(enum snd_pcm_chmap_position val); int snd_pcm_chmap_print(const snd_pcm_chmap_t *map, size_t maxlen, char *buf); unsigned int snd_pcm_chmap_from_string(const char *str); snd_pcm_chmap_t *snd_pcm_chmap_parse_string(const char *str); //int snd_pcm_mixer_element(snd_pcm_t *pcm, snd_mixer_t *mixer, snd_mixer_elem_t **elem); /* * application helpers - these functions are implemented on top * of the basic API */ int snd_pcm_recover(snd_pcm_t *pcm, int err, int silent); int snd_pcm_set_params(snd_pcm_t *pcm, snd_pcm_format_t format, snd_pcm_access_t access, unsigned int channels, unsigned int rate, int soft_resample, unsigned int latency); int snd_pcm_get_params(snd_pcm_t *pcm, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t *period_size); /** \} */ /** * \defgroup PCM_Info Stream Information * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_info_sizeof(void); /** \hideinitializer * \brief allocate an invalid #snd_pcm_info_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_info_alloca(ptr) __snd_alloca(ptr, snd_pcm_info) int snd_pcm_info_malloc(snd_pcm_info_t **ptr); void snd_pcm_info_free(snd_pcm_info_t *obj); void snd_pcm_info_copy(snd_pcm_info_t *dst, const snd_pcm_info_t *src); unsigned int snd_pcm_info_get_device(const snd_pcm_info_t *obj); unsigned int snd_pcm_info_get_subdevice(const snd_pcm_info_t *obj); snd_pcm_stream_t snd_pcm_info_get_stream(const snd_pcm_info_t *obj); int snd_pcm_info_get_card(const snd_pcm_info_t *obj); const char *snd_pcm_info_get_id(const snd_pcm_info_t *obj); const char *snd_pcm_info_get_name(const snd_pcm_info_t *obj); const char *snd_pcm_info_get_subdevice_name(const snd_pcm_info_t *obj); snd_pcm_class_t snd_pcm_info_get_class(const snd_pcm_info_t *obj); snd_pcm_subclass_t snd_pcm_info_get_subclass(const snd_pcm_info_t *obj); unsigned int snd_pcm_info_get_subdevices_count(const snd_pcm_info_t *obj); unsigned int snd_pcm_info_get_subdevices_avail(const snd_pcm_info_t *obj); snd_pcm_sync_id_t snd_pcm_info_get_sync(const snd_pcm_info_t *obj); void snd_pcm_info_set_device(snd_pcm_info_t *obj, unsigned int val); void snd_pcm_info_set_subdevice(snd_pcm_info_t *obj, unsigned int val); void snd_pcm_info_set_stream(snd_pcm_info_t *obj, snd_pcm_stream_t val); /** \} */ /** * \defgroup PCM_HW_Params Hardware Parameters * \ingroup PCM * See the \ref pcm page for more details. * \{ */ int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_mmap_sample_resolution(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_double(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_batch(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_block_transfer(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_monotonic(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_overrange(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_pause(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_resume(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_half_duplex(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_is_joint_duplex(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_sync_start(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_can_disable_period_wakeup(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_supports_audio_wallclock_ts(const snd_pcm_hw_params_t *params); /* deprecated, use audio_ts_type */ int snd_pcm_hw_params_supports_audio_ts_type(const snd_pcm_hw_params_t *params, int type); int snd_pcm_hw_params_get_rate_numden(const snd_pcm_hw_params_t *params, unsigned int *rate_num, unsigned int *rate_den); int snd_pcm_hw_params_get_sbits(const snd_pcm_hw_params_t *params); int snd_pcm_hw_params_get_fifo_size(const snd_pcm_hw_params_t *params); #if 0 typedef struct _snd_pcm_hw_strategy snd_pcm_hw_strategy_t; /* choices need to be sorted on ascending badness */ typedef struct _snd_pcm_hw_strategy_simple_choices_list { unsigned int value; unsigned int badness; } snd_pcm_hw_strategy_simple_choices_list_t; int snd_pcm_hw_params_strategy(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, const snd_pcm_hw_strategy_t *strategy, unsigned int badness_min, unsigned int badness_max); void snd_pcm_hw_strategy_free(snd_pcm_hw_strategy_t *strategy); int snd_pcm_hw_strategy_simple(snd_pcm_hw_strategy_t **strategyp, unsigned int badness_min, unsigned int badness_max); int snd_pcm_hw_params_try_explain_failure(snd_pcm_t *pcm, snd_pcm_hw_params_t *fail, snd_pcm_hw_params_t *success, unsigned int depth, snd_output_t *out); #endif size_t snd_pcm_hw_params_sizeof(void); /** \hideinitializer * \brief allocate an invalid #snd_pcm_hw_params_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_hw_params_alloca(ptr) __snd_alloca(ptr, snd_pcm_hw_params) int snd_pcm_hw_params_malloc(snd_pcm_hw_params_t **ptr); void snd_pcm_hw_params_free(snd_pcm_hw_params_t *obj); void snd_pcm_hw_params_copy(snd_pcm_hw_params_t *dst, const snd_pcm_hw_params_t *src); #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API) int snd_pcm_hw_params_get_access(const snd_pcm_hw_params_t *params, snd_pcm_access_t *_access); int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access); int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access); int snd_pcm_hw_params_set_access_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access); int snd_pcm_hw_params_set_access_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access); int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask); int snd_pcm_hw_params_get_access_mask(snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask); int snd_pcm_hw_params_get_format(const snd_pcm_hw_params_t *params, snd_pcm_format_t *val); int snd_pcm_hw_params_test_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val); int snd_pcm_hw_params_set_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val); int snd_pcm_hw_params_set_format_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format); int snd_pcm_hw_params_set_format_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format); int snd_pcm_hw_params_set_format_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask); void snd_pcm_hw_params_get_format_mask(snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask); int snd_pcm_hw_params_get_subformat(const snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); int snd_pcm_hw_params_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat); int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat); int snd_pcm_hw_params_set_subformat_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); int snd_pcm_hw_params_set_subformat_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat); int snd_pcm_hw_params_set_subformat_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask); void snd_pcm_hw_params_get_subformat_mask(snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask); int snd_pcm_hw_params_get_channels(const snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_get_channels_min(const snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_get_channels_max(const snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_test_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_set_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_set_channels_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_channels_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_channels_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, unsigned int *max); int snd_pcm_hw_params_set_channels_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_channels_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_channels_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_get_rate(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_rate_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_rate_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_test_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_rate_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_params_set_rate_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_get_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_get_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_set_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val); int snd_pcm_hw_params_get_period_wakeup(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val); int snd_pcm_hw_params_get_period_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_period_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_period_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_test_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_period_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_period_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_period_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_params_set_period_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_period_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_period_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_period_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); int snd_pcm_hw_params_get_period_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); int snd_pcm_hw_params_get_period_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir); int snd_pcm_hw_params_test_period_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val, int dir); int snd_pcm_hw_params_set_period_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val, int dir); int snd_pcm_hw_params_set_period_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *min, int *mindir, snd_pcm_uframes_t *max, int *maxdir); int snd_pcm_hw_params_set_period_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val, int *dir); int snd_pcm_hw_params_set_period_size_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_get_periods(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_periods_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_periods_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_test_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_periods_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_params_set_periods_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_periods_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params); int snd_pcm_hw_params_get_buffer_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_buffer_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_buffer_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_test_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir); int snd_pcm_hw_params_set_buffer_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_buffer_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_buffer_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir); int snd_pcm_hw_params_set_buffer_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_buffer_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_set_buffer_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir); int snd_pcm_hw_params_get_buffer_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_get_buffer_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_get_buffer_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_test_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_hw_params_set_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_hw_params_set_buffer_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_set_buffer_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_set_buffer_size_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *min, snd_pcm_uframes_t *max); int snd_pcm_hw_params_set_buffer_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_set_buffer_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_hw_params_set_buffer_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */ int snd_pcm_hw_params_get_min_align(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val); /** \} */ /** * \defgroup PCM_SW_Params Software Parameters * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_sw_params_sizeof(void); /** \hideinitializer * \brief allocate an invalid #snd_pcm_sw_params_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_sw_params_alloca(ptr) __snd_alloca(ptr, snd_pcm_sw_params) int snd_pcm_sw_params_malloc(snd_pcm_sw_params_t **ptr); void snd_pcm_sw_params_free(snd_pcm_sw_params_t *obj); void snd_pcm_sw_params_copy(snd_pcm_sw_params_t *dst, const snd_pcm_sw_params_t *src); int snd_pcm_sw_params_get_boundary(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API) int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val); int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val); int snd_pcm_sw_params_set_tstamp_type(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t val); int snd_pcm_sw_params_get_tstamp_type(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_type_t *val); int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_period_event(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, int val); int snd_pcm_sw_params_get_period_event(const snd_pcm_sw_params_t *params, int *val); int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_start_threshold(const snd_pcm_sw_params_t *paramsm, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_stop_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_silence_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val); int snd_pcm_sw_params_get_silence_size(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val); #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */ /** \} */ /* include old API */ #ifndef ALSA_LIBRARY_BUILD #if defined(ALSA_PCM_OLD_HW_PARAMS_API) || defined(ALSA_PCM_OLD_SW_PARAMS_API) #include "pcm_old.h" #endif #endif /** * \defgroup PCM_Access Access Mask Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_access_mask_sizeof(void); /** \hideinitializer * \brief allocate an empty #snd_pcm_access_mask_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_access_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_access_mask) int snd_pcm_access_mask_malloc(snd_pcm_access_mask_t **ptr); void snd_pcm_access_mask_free(snd_pcm_access_mask_t *obj); void snd_pcm_access_mask_copy(snd_pcm_access_mask_t *dst, const snd_pcm_access_mask_t *src); void snd_pcm_access_mask_none(snd_pcm_access_mask_t *mask); void snd_pcm_access_mask_any(snd_pcm_access_mask_t *mask); int snd_pcm_access_mask_test(const snd_pcm_access_mask_t *mask, snd_pcm_access_t val); int snd_pcm_access_mask_empty(const snd_pcm_access_mask_t *mask); void snd_pcm_access_mask_set(snd_pcm_access_mask_t *mask, snd_pcm_access_t val); void snd_pcm_access_mask_reset(snd_pcm_access_mask_t *mask, snd_pcm_access_t val); /** \} */ /** * \defgroup PCM_Format Format Mask Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_format_mask_sizeof(void); /** \hideinitializer * \brief allocate an empty #snd_pcm_format_mask_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_format_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_format_mask) int snd_pcm_format_mask_malloc(snd_pcm_format_mask_t **ptr); void snd_pcm_format_mask_free(snd_pcm_format_mask_t *obj); void snd_pcm_format_mask_copy(snd_pcm_format_mask_t *dst, const snd_pcm_format_mask_t *src); void snd_pcm_format_mask_none(snd_pcm_format_mask_t *mask); void snd_pcm_format_mask_any(snd_pcm_format_mask_t *mask); int snd_pcm_format_mask_test(const snd_pcm_format_mask_t *mask, snd_pcm_format_t val); int snd_pcm_format_mask_empty(const snd_pcm_format_mask_t *mask); void snd_pcm_format_mask_set(snd_pcm_format_mask_t *mask, snd_pcm_format_t val); void snd_pcm_format_mask_reset(snd_pcm_format_mask_t *mask, snd_pcm_format_t val); /** \} */ /** * \defgroup PCM_SubFormat Subformat Mask Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_subformat_mask_sizeof(void); /** \hideinitializer * \brief allocate an empty #snd_pcm_subformat_mask_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_subformat_mask_alloca(ptr) __snd_alloca(ptr, snd_pcm_subformat_mask) int snd_pcm_subformat_mask_malloc(snd_pcm_subformat_mask_t **ptr); void snd_pcm_subformat_mask_free(snd_pcm_subformat_mask_t *obj); void snd_pcm_subformat_mask_copy(snd_pcm_subformat_mask_t *dst, const snd_pcm_subformat_mask_t *src); void snd_pcm_subformat_mask_none(snd_pcm_subformat_mask_t *mask); void snd_pcm_subformat_mask_any(snd_pcm_subformat_mask_t *mask); int snd_pcm_subformat_mask_test(const snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val); int snd_pcm_subformat_mask_empty(const snd_pcm_subformat_mask_t *mask); void snd_pcm_subformat_mask_set(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val); void snd_pcm_subformat_mask_reset(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val); /** \} */ /** * \defgroup PCM_Status Status Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ size_t snd_pcm_status_sizeof(void); /** \hideinitializer * \brief allocate an invalid #snd_pcm_status_t using standard alloca * \param ptr returned pointer */ #define snd_pcm_status_alloca(ptr) __snd_alloca(ptr, snd_pcm_status) int snd_pcm_status_malloc(snd_pcm_status_t **ptr); void snd_pcm_status_free(snd_pcm_status_t *obj); void snd_pcm_status_copy(snd_pcm_status_t *dst, const snd_pcm_status_t *src); snd_pcm_state_t snd_pcm_status_get_state(const snd_pcm_status_t *obj); void snd_pcm_status_get_trigger_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr); void snd_pcm_status_get_trigger_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr); void snd_pcm_status_get_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr); void snd_pcm_status_get_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr); void snd_pcm_status_get_audio_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr); void snd_pcm_status_get_driver_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr); void snd_pcm_status_get_audio_htstamp_report(const snd_pcm_status_t *obj, snd_pcm_audio_tstamp_report_t *audio_tstamp_report); void snd_pcm_status_set_audio_htstamp_config(snd_pcm_status_t *obj, snd_pcm_audio_tstamp_config_t *audio_tstamp_config); static inline void snd_pcm_pack_audio_tstamp_config(unsigned int *data, snd_pcm_audio_tstamp_config_t *config) { *data = config->report_delay; *data <<= 4; *data |= config->type_requested; } static inline void snd_pcm_unpack_audio_tstamp_report(unsigned int data, unsigned int accuracy, snd_pcm_audio_tstamp_report_t *report) { data >>= 16; report->valid = data & 1; report->actual_type = (data >> 1) & 0xF; report->accuracy_report = (data >> 5) & 1; report->accuracy = accuracy; } snd_pcm_sframes_t snd_pcm_status_get_delay(const snd_pcm_status_t *obj); snd_pcm_uframes_t snd_pcm_status_get_avail(const snd_pcm_status_t *obj); snd_pcm_uframes_t snd_pcm_status_get_avail_max(const snd_pcm_status_t *obj); snd_pcm_uframes_t snd_pcm_status_get_overrange(const snd_pcm_status_t *obj); /** \} */ /** * \defgroup PCM_Description Description Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ const char *snd_pcm_type_name(snd_pcm_type_t type); const char *snd_pcm_stream_name(const snd_pcm_stream_t stream); const char *snd_pcm_access_name(const snd_pcm_access_t _access); const char *snd_pcm_format_name(const snd_pcm_format_t format); const char *snd_pcm_format_description(const snd_pcm_format_t format); const char *snd_pcm_subformat_name(const snd_pcm_subformat_t subformat); const char *snd_pcm_subformat_description(const snd_pcm_subformat_t subformat); snd_pcm_format_t snd_pcm_format_value(const char* name); const char *snd_pcm_tstamp_mode_name(const snd_pcm_tstamp_t mode); const char *snd_pcm_state_name(const snd_pcm_state_t state); /** \} */ /** * \defgroup PCM_Dump Debug Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ int snd_pcm_dump(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_dump_hw_setup(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_dump_sw_setup(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_dump_setup(snd_pcm_t *pcm, snd_output_t *out); int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out); int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out); int snd_pcm_status_dump(snd_pcm_status_t *status, snd_output_t *out); /** \} */ /** * \defgroup PCM_Direct Direct Access (MMAP) Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ int snd_pcm_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames); snd_pcm_sframes_t snd_pcm_mmap_commit(snd_pcm_t *pcm, snd_pcm_uframes_t offset, snd_pcm_uframes_t frames); snd_pcm_sframes_t snd_pcm_mmap_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_mmap_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_mmap_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size); /** \} */ /** * \defgroup PCM_Helpers Helper Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ int snd_pcm_format_signed(snd_pcm_format_t format); int snd_pcm_format_unsigned(snd_pcm_format_t format); int snd_pcm_format_linear(snd_pcm_format_t format); int snd_pcm_format_float(snd_pcm_format_t format); int snd_pcm_format_little_endian(snd_pcm_format_t format); int snd_pcm_format_big_endian(snd_pcm_format_t format); int snd_pcm_format_cpu_endian(snd_pcm_format_t format); int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */ int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */ snd_pcm_format_t snd_pcm_build_linear_format(int width, int pwidth, int unsignd, int big_endian); ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples); uint8_t snd_pcm_format_silence(snd_pcm_format_t format); uint16_t snd_pcm_format_silence_16(snd_pcm_format_t format); uint32_t snd_pcm_format_silence_32(snd_pcm_format_t format); uint64_t snd_pcm_format_silence_64(snd_pcm_format_t format); int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int samples); snd_pcm_sframes_t snd_pcm_bytes_to_frames(snd_pcm_t *pcm, ssize_t bytes); ssize_t snd_pcm_frames_to_bytes(snd_pcm_t *pcm, snd_pcm_sframes_t frames); long snd_pcm_bytes_to_samples(snd_pcm_t *pcm, ssize_t bytes); ssize_t snd_pcm_samples_to_bytes(snd_pcm_t *pcm, long samples); int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset, unsigned int samples, snd_pcm_format_t format); int snd_pcm_areas_silence(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset, unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format); int snd_pcm_area_copy(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset, const snd_pcm_channel_area_t *src_channel, snd_pcm_uframes_t src_offset, unsigned int samples, snd_pcm_format_t format); int snd_pcm_areas_copy(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset, const snd_pcm_channel_area_t *src_channels, snd_pcm_uframes_t src_offset, unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format); int snd_pcm_areas_copy_wrap(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset, const snd_pcm_uframes_t dst_size, const snd_pcm_channel_area_t *src_channels, snd_pcm_uframes_t src_offset, const snd_pcm_uframes_t src_size, const unsigned int channels, snd_pcm_uframes_t frames, const snd_pcm_format_t format); /** \} */ /** * \defgroup PCM_Hook Hook Extension * \ingroup PCM * See the \ref pcm page for more details. * \{ */ /** type of pcm hook */ typedef enum _snd_pcm_hook_type { SND_PCM_HOOK_TYPE_HW_PARAMS = 0, 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); /** \} */ /** * \defgroup PCM_Scope Scope Plugin Extension * \ingroup PCM * See the \ref pcm page for more details. * \{ */ /** #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, const snd_pcm_scope_ops_t *val); void snd_pcm_scope_set_name(snd_pcm_scope_t *scope, const char *val); const char *snd_pcm_scope_get_name(snd_pcm_scope_t *scope); void *snd_pcm_scope_get_callback_private(snd_pcm_scope_t *scope); void snd_pcm_scope_set_callback_private(snd_pcm_scope_t *scope, void *val); int snd_pcm_scope_s16_open(snd_pcm_t *pcm, const char *name, snd_pcm_scope_t **scopep); int16_t *snd_pcm_scope_s16_get_channel_buffer(snd_pcm_scope_t *scope, unsigned int channel); /** \} */ /** * \defgroup PCM_Simple Simple setup functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ /** Simple PCM latency type */ typedef enum _snd_spcm_latency { /** standard latency - for standard playback or capture (estimated latency in one direction 350ms) */ SND_SPCM_LATENCY_STANDARD = 0, /** medium latency - software phones etc. (estimated latency in one direction maximally 25ms */ SND_SPCM_LATENCY_MEDIUM, /** realtime latency - realtime applications (effect processors etc.) (estimated latency in one direction 5ms and better) */ SND_SPCM_LATENCY_REALTIME } snd_spcm_latency_t; /** Simple PCM xrun type */ typedef enum _snd_spcm_xrun_type { /** driver / library will ignore all xruns, the stream runs forever */ SND_SPCM_XRUN_IGNORE = 0, /** driver / library stops the stream when an xrun occurs */ SND_SPCM_XRUN_STOP } snd_spcm_xrun_type_t; /** Simple PCM duplex type */ typedef enum _snd_spcm_duplex_type { /** liberal duplex - the buffer and period sizes might not match */ SND_SPCM_DUPLEX_LIBERAL = 0, /** pedantic duplex - the buffer and period sizes MUST match */ SND_SPCM_DUPLEX_PEDANTIC } snd_spcm_duplex_type_t; int snd_spcm_init(snd_pcm_t *pcm, unsigned int rate, unsigned int channels, snd_pcm_format_t format, snd_pcm_subformat_t subformat, snd_spcm_latency_t latency, snd_pcm_access_t _access, snd_spcm_xrun_type_t xrun_type); int snd_spcm_init_duplex(snd_pcm_t *playback_pcm, snd_pcm_t *capture_pcm, unsigned int rate, unsigned int channels, snd_pcm_format_t format, snd_pcm_subformat_t subformat, snd_spcm_latency_t latency, snd_pcm_access_t _access, snd_spcm_xrun_type_t xrun_type, snd_spcm_duplex_type_t duplex_type); int snd_spcm_init_get_params(snd_pcm_t *pcm, unsigned int *rate, snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t *period_size); /** \} */ /** * \defgroup PCM_Deprecated Deprecated Functions * \ingroup PCM * See the \ref pcm page for more details. * \{ */ /* Deprecated functions, for compatibility */ const char *snd_pcm_start_mode_name(snd_pcm_start_t mode) __attribute__((deprecated)); const char *snd_pcm_xrun_mode_name(snd_pcm_xrun_t mode) __attribute__((deprecated)); int snd_pcm_sw_params_set_start_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_start_t val) __attribute__((deprecated)); snd_pcm_start_t snd_pcm_sw_params_get_start_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated)); int snd_pcm_sw_params_set_xrun_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_xrun_t val) __attribute__((deprecated)); snd_pcm_xrun_t snd_pcm_sw_params_get_xrun_mode(const snd_pcm_sw_params_t *params) __attribute__((deprecated)); #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API) int snd_pcm_sw_params_set_xfer_align(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val) __attribute__((deprecated)); int snd_pcm_sw_params_get_xfer_align(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val) __attribute__((deprecated)); int snd_pcm_sw_params_set_sleep_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val) __attribute__((deprecated)); int snd_pcm_sw_params_get_sleep_min(const snd_pcm_sw_params_t *params, unsigned int *val) __attribute__((deprecated)); #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */ #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API) int snd_pcm_hw_params_get_tick_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_get_tick_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_get_tick_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_test_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, int *mindir, unsigned int *max, int *maxdir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); int snd_pcm_hw_params_set_tick_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir) __attribute__((deprecated)); #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */ /** \} */ #ifdef __cplusplus } #endif #endif /* __ALSA_PCM_H */