/home/users/builder/rpm/BUILD/alsa-lib-1.0.13/include/pcm.h

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00001 
00012 /*
00013  *   This library is free software; you can redistribute it and/or modify
00014  *   it under the terms of the GNU Lesser General Public License as
00015  *   published by the Free Software Foundation; either version 2.1 of
00016  *   the License, or (at your option) any later version.
00017  *
00018  *   This program is distributed in the hope that it will be useful,
00019  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
00020  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00021  *   GNU Lesser General Public License for more details.
00022  *
00023  *   You should have received a copy of the GNU Lesser General Public
00024  *   License along with this library; if not, write to the Free Software
00025  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
00026  *
00027  */
00028 
00029 #ifndef __ALSA_PCM_H
00030 #define __ALSA_PCM_H
00031 
00032 #ifdef __cplusplus
00033 extern "C" {
00034 #endif
00035 
00043 #define SND_PCM_DLSYM_VERSION           _dlsym_pcm_001
00044 
00046 typedef struct _snd_pcm_info snd_pcm_info_t;
00048 typedef struct _snd_pcm_hw_params snd_pcm_hw_params_t;
00050 typedef struct _snd_pcm_sw_params snd_pcm_sw_params_t;
00052  typedef struct _snd_pcm_status snd_pcm_status_t;
00054 typedef struct _snd_pcm_access_mask snd_pcm_access_mask_t;
00056 typedef struct _snd_pcm_format_mask snd_pcm_format_mask_t;
00058 typedef struct _snd_pcm_subformat_mask snd_pcm_subformat_mask_t;
00059 
00061 typedef enum _snd_pcm_class {
00064         SND_PCM_CLASS_GENERIC = 0,
00066         SND_PCM_CLASS_MULTI,
00068         SND_PCM_CLASS_MODEM,
00070         SND_PCM_CLASS_DIGITIZER,
00071         SND_PCM_CLASS_LAST = SND_PCM_CLASS_DIGITIZER
00072 } snd_pcm_class_t;
00073 
00075 typedef enum _snd_pcm_subclass {
00077         SND_PCM_SUBCLASS_GENERIC_MIX = 0,
00079         SND_PCM_SUBCLASS_MULTI_MIX,
00080         SND_PCM_SUBCLASS_LAST = SND_PCM_SUBCLASS_MULTI_MIX
00081 } snd_pcm_subclass_t;
00082 
00084 typedef enum _snd_pcm_stream {
00086         SND_PCM_STREAM_PLAYBACK = 0,
00088         SND_PCM_STREAM_CAPTURE,
00089         SND_PCM_STREAM_LAST = SND_PCM_STREAM_CAPTURE
00090 } snd_pcm_stream_t;
00091 
00093 typedef enum _snd_pcm_access {
00095         SND_PCM_ACCESS_MMAP_INTERLEAVED = 0,
00097         SND_PCM_ACCESS_MMAP_NONINTERLEAVED,
00099         SND_PCM_ACCESS_MMAP_COMPLEX,
00101         SND_PCM_ACCESS_RW_INTERLEAVED,
00103         SND_PCM_ACCESS_RW_NONINTERLEAVED,
00104         SND_PCM_ACCESS_LAST = SND_PCM_ACCESS_RW_NONINTERLEAVED
00105 } snd_pcm_access_t;
00106 
00108 typedef enum _snd_pcm_format {
00110         SND_PCM_FORMAT_UNKNOWN = -1,
00112         SND_PCM_FORMAT_S8 = 0,
00114         SND_PCM_FORMAT_U8,
00116         SND_PCM_FORMAT_S16_LE,
00118         SND_PCM_FORMAT_S16_BE,
00120         SND_PCM_FORMAT_U16_LE,
00122         SND_PCM_FORMAT_U16_BE,
00124         SND_PCM_FORMAT_S24_LE,
00126         SND_PCM_FORMAT_S24_BE,
00128         SND_PCM_FORMAT_U24_LE,
00130         SND_PCM_FORMAT_U24_BE,
00132         SND_PCM_FORMAT_S32_LE,
00134         SND_PCM_FORMAT_S32_BE,
00136         SND_PCM_FORMAT_U32_LE,
00138         SND_PCM_FORMAT_U32_BE,
00140         SND_PCM_FORMAT_FLOAT_LE,
00142         SND_PCM_FORMAT_FLOAT_BE,
00144         SND_PCM_FORMAT_FLOAT64_LE,
00146         SND_PCM_FORMAT_FLOAT64_BE,
00148         SND_PCM_FORMAT_IEC958_SUBFRAME_LE,
00150         SND_PCM_FORMAT_IEC958_SUBFRAME_BE,
00152         SND_PCM_FORMAT_MU_LAW,
00154         SND_PCM_FORMAT_A_LAW,
00156         SND_PCM_FORMAT_IMA_ADPCM,
00158         SND_PCM_FORMAT_MPEG,
00160         SND_PCM_FORMAT_GSM,
00162         SND_PCM_FORMAT_SPECIAL = 31,
00164         SND_PCM_FORMAT_S24_3LE = 32,
00166         SND_PCM_FORMAT_S24_3BE,
00168         SND_PCM_FORMAT_U24_3LE,
00170         SND_PCM_FORMAT_U24_3BE,
00172         SND_PCM_FORMAT_S20_3LE,
00174         SND_PCM_FORMAT_S20_3BE,
00176         SND_PCM_FORMAT_U20_3LE,
00178         SND_PCM_FORMAT_U20_3BE,
00180         SND_PCM_FORMAT_S18_3LE,
00182         SND_PCM_FORMAT_S18_3BE,
00184         SND_PCM_FORMAT_U18_3LE,
00186         SND_PCM_FORMAT_U18_3BE,
00187         SND_PCM_FORMAT_LAST = SND_PCM_FORMAT_U18_3BE,
00188 
00189 #if __BYTE_ORDER == __LITTLE_ENDIAN
00190 
00191         SND_PCM_FORMAT_S16 = SND_PCM_FORMAT_S16_LE,
00193         SND_PCM_FORMAT_U16 = SND_PCM_FORMAT_U16_LE,
00195         SND_PCM_FORMAT_S24 = SND_PCM_FORMAT_S24_LE,
00197         SND_PCM_FORMAT_U24 = SND_PCM_FORMAT_U24_LE,
00199         SND_PCM_FORMAT_S32 = SND_PCM_FORMAT_S32_LE,
00201         SND_PCM_FORMAT_U32 = SND_PCM_FORMAT_U32_LE,
00203         SND_PCM_FORMAT_FLOAT = SND_PCM_FORMAT_FLOAT_LE,
00205         SND_PCM_FORMAT_FLOAT64 = SND_PCM_FORMAT_FLOAT64_LE,
00207         SND_PCM_FORMAT_IEC958_SUBFRAME = SND_PCM_FORMAT_IEC958_SUBFRAME_LE
00208 #elif __BYTE_ORDER == __BIG_ENDIAN
00209 
00210         SND_PCM_FORMAT_S16 = SND_PCM_FORMAT_S16_BE,
00212         SND_PCM_FORMAT_U16 = SND_PCM_FORMAT_U16_BE,
00214         SND_PCM_FORMAT_S24 = SND_PCM_FORMAT_S24_BE,
00216         SND_PCM_FORMAT_U24 = SND_PCM_FORMAT_U24_BE,
00218         SND_PCM_FORMAT_S32 = SND_PCM_FORMAT_S32_BE,
00220         SND_PCM_FORMAT_U32 = SND_PCM_FORMAT_U32_BE,
00222         SND_PCM_FORMAT_FLOAT = SND_PCM_FORMAT_FLOAT_BE,
00224         SND_PCM_FORMAT_FLOAT64 = SND_PCM_FORMAT_FLOAT64_BE,
00226         SND_PCM_FORMAT_IEC958_SUBFRAME = SND_PCM_FORMAT_IEC958_SUBFRAME_BE
00227 #else
00228 #error "Unknown endian"
00229 #endif
00230 } snd_pcm_format_t;
00231 
00233 typedef enum _snd_pcm_subformat {
00235         SND_PCM_SUBFORMAT_STD = 0,
00236         SND_PCM_SUBFORMAT_LAST = SND_PCM_SUBFORMAT_STD
00237 } snd_pcm_subformat_t;
00238 
00240 typedef enum _snd_pcm_state {
00242         SND_PCM_STATE_OPEN = 0,
00244         SND_PCM_STATE_SETUP,
00246         SND_PCM_STATE_PREPARED,
00248         SND_PCM_STATE_RUNNING,
00250         SND_PCM_STATE_XRUN,
00252         SND_PCM_STATE_DRAINING,
00254         SND_PCM_STATE_PAUSED,
00256         SND_PCM_STATE_SUSPENDED,
00258         SND_PCM_STATE_DISCONNECTED,
00259         SND_PCM_STATE_LAST = SND_PCM_STATE_DISCONNECTED
00260 } snd_pcm_state_t;
00261 
00263 typedef enum _snd_pcm_start {
00265         SND_PCM_START_DATA = 0,
00267         SND_PCM_START_EXPLICIT,
00268         SND_PCM_START_LAST = SND_PCM_START_EXPLICIT
00269 } snd_pcm_start_t;
00270 
00272 typedef enum _snd_pcm_xrun {
00274         SND_PCM_XRUN_NONE = 0,
00276         SND_PCM_XRUN_STOP,
00277         SND_PCM_XRUN_LAST = SND_PCM_XRUN_STOP
00278 } snd_pcm_xrun_t;
00279 
00281 typedef enum _snd_pcm_tstamp {
00283         SND_PCM_TSTAMP_NONE = 0,
00285         SND_PCM_TSTAMP_MMAP,
00286         SND_PCM_TSTAMP_LAST = SND_PCM_TSTAMP_MMAP
00287 } snd_pcm_tstamp_t;
00288 
00290 typedef unsigned long snd_pcm_uframes_t;
00292 typedef long snd_pcm_sframes_t;
00293 
00295 #define SND_PCM_NONBLOCK                0x0001
00296 
00297 #define SND_PCM_ASYNC                   0x0002
00298 
00300 typedef struct _snd_pcm snd_pcm_t;
00301 
00303 enum _snd_pcm_type {
00305         SND_PCM_TYPE_HW = 0,
00307         SND_PCM_TYPE_HOOKS,
00310         SND_PCM_TYPE_MULTI,
00312         SND_PCM_TYPE_FILE,
00314         SND_PCM_TYPE_NULL,
00316         SND_PCM_TYPE_SHM,
00318         SND_PCM_TYPE_INET,
00320         SND_PCM_TYPE_COPY,
00322         SND_PCM_TYPE_LINEAR,
00324         SND_PCM_TYPE_ALAW,
00326         SND_PCM_TYPE_MULAW,
00328         SND_PCM_TYPE_ADPCM,
00330         SND_PCM_TYPE_RATE,
00332         SND_PCM_TYPE_ROUTE,
00334         SND_PCM_TYPE_PLUG,
00336         SND_PCM_TYPE_SHARE,
00338         SND_PCM_TYPE_METER,
00340         SND_PCM_TYPE_MIX,
00342         SND_PCM_TYPE_DROUTE,
00344         SND_PCM_TYPE_LBSERVER,
00346         SND_PCM_TYPE_LINEAR_FLOAT,
00348         SND_PCM_TYPE_LADSPA,
00350         SND_PCM_TYPE_DMIX,
00352         SND_PCM_TYPE_JACK,
00354         SND_PCM_TYPE_DSNOOP,
00356         SND_PCM_TYPE_DSHARE,
00358         SND_PCM_TYPE_IEC958,
00360         SND_PCM_TYPE_SOFTVOL,
00362         SND_PCM_TYPE_IOPLUG,
00364         SND_PCM_TYPE_EXTPLUG,
00365         SND_PCM_TYPE_LAST = SND_PCM_TYPE_EXTPLUG
00366 };
00367 
00369 typedef enum _snd_pcm_type snd_pcm_type_t;
00370 
00372 typedef struct _snd_pcm_channel_area {
00374         void *addr;
00376         unsigned int first;
00378         unsigned int step;
00379 } snd_pcm_channel_area_t;
00380 
00382 typedef union _snd_pcm_sync_id {
00384         unsigned char id[16];
00386         unsigned short id16[8];
00388         unsigned int id32[4];
00389 } snd_pcm_sync_id_t;
00390 
00392 typedef struct _snd_pcm_scope snd_pcm_scope_t;
00393 
00394 int snd_pcm_open(snd_pcm_t **pcm, const char *name, 
00395                  snd_pcm_stream_t stream, int mode);
00396 int snd_pcm_open_lconf(snd_pcm_t **pcm, const char *name, 
00397                        snd_pcm_stream_t stream, int mode,
00398                        snd_config_t *lconf);
00399 
00400 int snd_pcm_close(snd_pcm_t *pcm);
00401 const char *snd_pcm_name(snd_pcm_t *pcm);
00402 snd_pcm_type_t snd_pcm_type(snd_pcm_t *pcm);
00403 snd_pcm_stream_t snd_pcm_stream(snd_pcm_t *pcm);
00404 int snd_pcm_poll_descriptors_count(snd_pcm_t *pcm);
00405 int snd_pcm_poll_descriptors(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space);
00406 int snd_pcm_poll_descriptors_revents(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
00407 int snd_pcm_nonblock(snd_pcm_t *pcm, int nonblock);
00408 int snd_async_add_pcm_handler(snd_async_handler_t **handler, snd_pcm_t *pcm, 
00409                               snd_async_callback_t callback, void *private_data);
00410 snd_pcm_t *snd_async_handler_get_pcm(snd_async_handler_t *handler);
00411 int snd_pcm_info(snd_pcm_t *pcm, snd_pcm_info_t *info);
00412 int snd_pcm_hw_params_current(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
00413 int snd_pcm_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
00414 int snd_pcm_hw_free(snd_pcm_t *pcm);
00415 int snd_pcm_sw_params_current(snd_pcm_t *pcm, snd_pcm_sw_params_t *params);
00416 int snd_pcm_sw_params(snd_pcm_t *pcm, snd_pcm_sw_params_t *params);
00417 int snd_pcm_prepare(snd_pcm_t *pcm);
00418 int snd_pcm_reset(snd_pcm_t *pcm);
00419 int snd_pcm_status(snd_pcm_t *pcm, snd_pcm_status_t *status);
00420 int snd_pcm_start(snd_pcm_t *pcm);
00421 int snd_pcm_drop(snd_pcm_t *pcm);
00422 int snd_pcm_drain(snd_pcm_t *pcm);
00423 int snd_pcm_pause(snd_pcm_t *pcm, int enable);
00424 snd_pcm_state_t snd_pcm_state(snd_pcm_t *pcm);
00425 int snd_pcm_hwsync(snd_pcm_t *pcm);
00426 int snd_pcm_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delayp);
00427 int snd_pcm_resume(snd_pcm_t *pcm);
00428 snd_pcm_sframes_t snd_pcm_avail_update(snd_pcm_t *pcm);
00429 snd_pcm_sframes_t snd_pcm_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
00430 snd_pcm_sframes_t snd_pcm_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames);
00431 snd_pcm_sframes_t snd_pcm_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size);
00432 snd_pcm_sframes_t snd_pcm_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
00433 snd_pcm_sframes_t snd_pcm_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
00434 snd_pcm_sframes_t snd_pcm_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
00435 int snd_pcm_wait(snd_pcm_t *pcm, int timeout);
00436 
00437 int snd_pcm_link(snd_pcm_t *pcm1, snd_pcm_t *pcm2);
00438 int snd_pcm_unlink(snd_pcm_t *pcm);
00439 
00440 /*
00441  * application helpers - these functions are implemented on top
00442  * of the basic API
00443  */
00444 
00445 int snd_pcm_recover(snd_pcm_t *pcm, int err, int silent);
00446 int snd_pcm_set_params(snd_pcm_t *pcm,
00447                        snd_pcm_format_t format,
00448                        snd_pcm_access_t access,
00449                        unsigned int channels,
00450                        unsigned int rate,
00451                        int soft_resample,
00452                        unsigned int latency);
00453 int snd_pcm_get_params(snd_pcm_t *pcm,
00454                        snd_pcm_uframes_t *buffer_size,
00455                        snd_pcm_uframes_t *period_size);
00456 
00466 size_t snd_pcm_info_sizeof(void);
00471 #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)
00472 int snd_pcm_info_malloc(snd_pcm_info_t **ptr);
00473 void snd_pcm_info_free(snd_pcm_info_t *obj);
00474 void snd_pcm_info_copy(snd_pcm_info_t *dst, const snd_pcm_info_t *src);
00475 unsigned int snd_pcm_info_get_device(const snd_pcm_info_t *obj);
00476 unsigned int snd_pcm_info_get_subdevice(const snd_pcm_info_t *obj);
00477 snd_pcm_stream_t snd_pcm_info_get_stream(const snd_pcm_info_t *obj);
00478 int snd_pcm_info_get_card(const snd_pcm_info_t *obj);
00479 const char *snd_pcm_info_get_id(const snd_pcm_info_t *obj);
00480 const char *snd_pcm_info_get_name(const snd_pcm_info_t *obj);
00481 const char *snd_pcm_info_get_subdevice_name(const snd_pcm_info_t *obj);
00482 snd_pcm_class_t snd_pcm_info_get_class(const snd_pcm_info_t *obj);
00483 snd_pcm_subclass_t snd_pcm_info_get_subclass(const snd_pcm_info_t *obj);
00484 unsigned int snd_pcm_info_get_subdevices_count(const snd_pcm_info_t *obj);
00485 unsigned int snd_pcm_info_get_subdevices_avail(const snd_pcm_info_t *obj);
00486 snd_pcm_sync_id_t snd_pcm_info_get_sync(const snd_pcm_info_t *obj);
00487 void snd_pcm_info_set_device(snd_pcm_info_t *obj, unsigned int val);
00488 void snd_pcm_info_set_subdevice(snd_pcm_info_t *obj, unsigned int val);
00489 void snd_pcm_info_set_stream(snd_pcm_info_t *obj, snd_pcm_stream_t val);
00490 
00500 int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
00501 
00502 int snd_pcm_hw_params_can_mmap_sample_resolution(const snd_pcm_hw_params_t *params);
00503 int snd_pcm_hw_params_is_double(const snd_pcm_hw_params_t *params);
00504 int snd_pcm_hw_params_is_batch(const snd_pcm_hw_params_t *params);
00505 int snd_pcm_hw_params_is_block_transfer(const snd_pcm_hw_params_t *params);
00506 int snd_pcm_hw_params_can_overrange(const snd_pcm_hw_params_t *params);
00507 int snd_pcm_hw_params_can_pause(const snd_pcm_hw_params_t *params);
00508 int snd_pcm_hw_params_can_resume(const snd_pcm_hw_params_t *params);
00509 int snd_pcm_hw_params_is_half_duplex(const snd_pcm_hw_params_t *params);
00510 int snd_pcm_hw_params_is_joint_duplex(const snd_pcm_hw_params_t *params);
00511 int snd_pcm_hw_params_can_sync_start(const snd_pcm_hw_params_t *params);
00512 int snd_pcm_hw_params_get_rate_numden(const snd_pcm_hw_params_t *params,
00513                                       unsigned int *rate_num,
00514                                       unsigned int *rate_den);
00515 int snd_pcm_hw_params_get_sbits(const snd_pcm_hw_params_t *params);
00516 int snd_pcm_hw_params_get_fifo_size(const snd_pcm_hw_params_t *params);
00517 
00518 #if 0
00519 typedef struct _snd_pcm_hw_strategy snd_pcm_hw_strategy_t;
00520 
00521 /* choices need to be sorted on ascending badness */
00522 typedef struct _snd_pcm_hw_strategy_simple_choices_list {
00523         unsigned int value;
00524         unsigned int badness;
00525 } snd_pcm_hw_strategy_simple_choices_list_t;
00526 
00527 int snd_pcm_hw_params_strategy(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
00528                                const snd_pcm_hw_strategy_t *strategy,
00529                                unsigned int badness_min,
00530                                unsigned int badness_max);
00531 
00532 void snd_pcm_hw_strategy_free(snd_pcm_hw_strategy_t *strategy);
00533 int snd_pcm_hw_strategy_simple(snd_pcm_hw_strategy_t **strategyp,
00534                                unsigned int badness_min,
00535                                unsigned int badness_max);
00536 int snd_pcm_hw_params_try_explain_failure(snd_pcm_t *pcm,
00537                                           snd_pcm_hw_params_t *fail,
00538                                           snd_pcm_hw_params_t *success,
00539                                           unsigned int depth,
00540                                           snd_output_t *out);
00541 
00542 #endif
00543 
00544 size_t snd_pcm_hw_params_sizeof(void);
00549 #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)
00550 int snd_pcm_hw_params_malloc(snd_pcm_hw_params_t **ptr);
00551 void snd_pcm_hw_params_free(snd_pcm_hw_params_t *obj);
00552 void snd_pcm_hw_params_copy(snd_pcm_hw_params_t *dst, const snd_pcm_hw_params_t *src);
00553 
00554 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_HW_PARAMS_API)
00555 
00556 int snd_pcm_hw_params_get_access(const snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
00557 int snd_pcm_hw_params_test_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access);
00558 int snd_pcm_hw_params_set_access(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t _access);
00559 int snd_pcm_hw_params_set_access_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
00560 int snd_pcm_hw_params_set_access_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_t *_access);
00561 int snd_pcm_hw_params_set_access_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask);
00562 int snd_pcm_hw_params_get_access_mask(snd_pcm_hw_params_t *params, snd_pcm_access_mask_t *mask);
00563 
00564 int snd_pcm_hw_params_get_format(const snd_pcm_hw_params_t *params, snd_pcm_format_t *val);
00565 int snd_pcm_hw_params_test_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val);
00566 int snd_pcm_hw_params_set_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t val);
00567 int snd_pcm_hw_params_set_format_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format);
00568 int snd_pcm_hw_params_set_format_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_t *format);
00569 int snd_pcm_hw_params_set_format_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask);
00570 void snd_pcm_hw_params_get_format_mask(snd_pcm_hw_params_t *params, snd_pcm_format_mask_t *mask);
00571 
00572 int snd_pcm_hw_params_get_subformat(const snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
00573 int snd_pcm_hw_params_test_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat);
00574 int snd_pcm_hw_params_set_subformat(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t subformat);
00575 int snd_pcm_hw_params_set_subformat_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
00576 int snd_pcm_hw_params_set_subformat_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_t *subformat);
00577 int snd_pcm_hw_params_set_subformat_mask(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask);
00578 void snd_pcm_hw_params_get_subformat_mask(snd_pcm_hw_params_t *params, snd_pcm_subformat_mask_t *mask);
00579 
00580 int snd_pcm_hw_params_get_channels(const snd_pcm_hw_params_t *params, unsigned int *val);
00581 int snd_pcm_hw_params_get_channels_min(const snd_pcm_hw_params_t *params, unsigned int *val);
00582 int snd_pcm_hw_params_get_channels_max(const snd_pcm_hw_params_t *params, unsigned int *val);
00583 int snd_pcm_hw_params_test_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
00584 int snd_pcm_hw_params_set_channels(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
00585 int snd_pcm_hw_params_set_channels_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
00586 int snd_pcm_hw_params_set_channels_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
00587 int snd_pcm_hw_params_set_channels_minmax(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *min, unsigned int *max);
00588 int snd_pcm_hw_params_set_channels_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
00589 int snd_pcm_hw_params_set_channels_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
00590 int snd_pcm_hw_params_set_channels_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
00591 
00592 int snd_pcm_hw_params_get_rate(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00593 int snd_pcm_hw_params_get_rate_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00594 int snd_pcm_hw_params_get_rate_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00595 int snd_pcm_hw_params_test_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00596 int snd_pcm_hw_params_set_rate(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00597 int snd_pcm_hw_params_set_rate_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00598 int snd_pcm_hw_params_set_rate_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00599 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);
00600 int snd_pcm_hw_params_set_rate_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00601 int snd_pcm_hw_params_set_rate_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00602 int snd_pcm_hw_params_set_rate_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00603 int snd_pcm_hw_params_set_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
00604 int snd_pcm_hw_params_get_rate_resample(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
00605 int snd_pcm_hw_params_set_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val);
00606 int snd_pcm_hw_params_get_export_buffer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val);
00607 
00608 int snd_pcm_hw_params_get_period_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00609 int snd_pcm_hw_params_get_period_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00610 int snd_pcm_hw_params_get_period_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00611 int snd_pcm_hw_params_test_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00612 int snd_pcm_hw_params_set_period_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00613 int snd_pcm_hw_params_set_period_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00614 int snd_pcm_hw_params_set_period_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00615 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);
00616 int snd_pcm_hw_params_set_period_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00617 int snd_pcm_hw_params_set_period_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00618 int snd_pcm_hw_params_set_period_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00619 
00620 int snd_pcm_hw_params_get_period_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
00621 int snd_pcm_hw_params_get_period_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
00622 int snd_pcm_hw_params_get_period_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *frames, int *dir);
00623 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);
00624 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);
00625 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);
00626 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);
00627 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);
00628 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);
00629 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);
00630 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);
00631 int snd_pcm_hw_params_set_period_size_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
00632 
00633 int snd_pcm_hw_params_get_periods(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00634 int snd_pcm_hw_params_get_periods_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00635 int snd_pcm_hw_params_get_periods_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00636 int snd_pcm_hw_params_test_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00637 int snd_pcm_hw_params_set_periods(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00638 int snd_pcm_hw_params_set_periods_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00639 int snd_pcm_hw_params_set_periods_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00640 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);
00641 int snd_pcm_hw_params_set_periods_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00642 int snd_pcm_hw_params_set_periods_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00643 int snd_pcm_hw_params_set_periods_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00644 int snd_pcm_hw_params_set_periods_integer(snd_pcm_t *pcm, snd_pcm_hw_params_t *params);
00645 
00646 int snd_pcm_hw_params_get_buffer_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00647 int snd_pcm_hw_params_get_buffer_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00648 int snd_pcm_hw_params_get_buffer_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00649 int snd_pcm_hw_params_test_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00650 int snd_pcm_hw_params_set_buffer_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00651 int snd_pcm_hw_params_set_buffer_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00652 int snd_pcm_hw_params_set_buffer_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00653 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);
00654 int snd_pcm_hw_params_set_buffer_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00655 int snd_pcm_hw_params_set_buffer_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00656 int snd_pcm_hw_params_set_buffer_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00657 
00658 int snd_pcm_hw_params_get_buffer_size(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00659 int snd_pcm_hw_params_get_buffer_size_min(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00660 int snd_pcm_hw_params_get_buffer_size_max(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00661 int snd_pcm_hw_params_test_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val);
00662 int snd_pcm_hw_params_set_buffer_size(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t val);
00663 int snd_pcm_hw_params_set_buffer_size_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00664 int snd_pcm_hw_params_set_buffer_size_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00665 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);
00666 int snd_pcm_hw_params_set_buffer_size_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00667 int snd_pcm_hw_params_set_buffer_size_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00668 int snd_pcm_hw_params_set_buffer_size_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00669 
00670 int snd_pcm_hw_params_get_tick_time(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00671 int snd_pcm_hw_params_get_tick_time_min(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00672 int snd_pcm_hw_params_get_tick_time_max(const snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00673 int snd_pcm_hw_params_test_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00674 int snd_pcm_hw_params_set_tick_time(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int val, int dir);
00675 int snd_pcm_hw_params_set_tick_time_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00676 int snd_pcm_hw_params_set_tick_time_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00677 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);
00678 int snd_pcm_hw_params_set_tick_time_near(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00679 int snd_pcm_hw_params_set_tick_time_first(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00680 int snd_pcm_hw_params_set_tick_time_last(snd_pcm_t *pcm, snd_pcm_hw_params_t *params, unsigned int *val, int *dir);
00681 
00682 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_HW_PARAMS_API */
00683 
00684 int snd_pcm_hw_params_get_min_align(const snd_pcm_hw_params_t *params, snd_pcm_uframes_t *val);
00685 
00695 size_t snd_pcm_sw_params_sizeof(void);
00700 #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)
00701 int snd_pcm_sw_params_malloc(snd_pcm_sw_params_t **ptr);
00702 void snd_pcm_sw_params_free(snd_pcm_sw_params_t *obj);
00703 void snd_pcm_sw_params_copy(snd_pcm_sw_params_t *dst, const snd_pcm_sw_params_t *src);
00704 int snd_pcm_sw_params_get_boundary(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
00705 
00706 #if !defined(ALSA_LIBRARY_BUILD) && !defined(ALSA_PCM_OLD_SW_PARAMS_API)
00707 
00708 int snd_pcm_sw_params_set_tstamp_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_tstamp_t val);
00709 int snd_pcm_sw_params_get_tstamp_mode(const snd_pcm_sw_params_t *params, snd_pcm_tstamp_t *val);
00710 int snd_pcm_sw_params_set_sleep_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, unsigned int val);
00711 int snd_pcm_sw_params_get_sleep_min(const snd_pcm_sw_params_t *params, unsigned int *val);
00712 int snd_pcm_sw_params_set_avail_min(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
00713 int snd_pcm_sw_params_get_avail_min(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
00714 int snd_pcm_sw_params_set_xfer_align(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
00715 int snd_pcm_sw_params_get_xfer_align(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
00716 int snd_pcm_sw_params_set_start_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
00717 int snd_pcm_sw_params_get_start_threshold(const snd_pcm_sw_params_t *paramsm, snd_pcm_uframes_t *val);
00718 int snd_pcm_sw_params_set_stop_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
00719 int snd_pcm_sw_params_get_stop_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
00720 int snd_pcm_sw_params_set_silence_threshold(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
00721 int snd_pcm_sw_params_get_silence_threshold(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
00722 int snd_pcm_sw_params_set_silence_size(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_uframes_t val);
00723 int snd_pcm_sw_params_get_silence_size(const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val);
00724 
00725 #endif /* !ALSA_LIBRARY_BUILD && !ALSA_PCM_OLD_SW_PARAMS_API */
00726 
00729 /* include old API */
00730 #ifndef ALSA_LIBRARY_BUILD
00731 #if defined(ALSA_PCM_OLD_HW_PARAMS_API) || defined(ALSA_PCM_OLD_SW_PARAMS_API)
00732 #include "pcm_old.h"
00733 #endif
00734 #endif
00735 
00743 size_t snd_pcm_access_mask_sizeof(void);
00748 #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)
00749 int snd_pcm_access_mask_malloc(snd_pcm_access_mask_t **ptr);
00750 void snd_pcm_access_mask_free(snd_pcm_access_mask_t *obj);
00751 void snd_pcm_access_mask_copy(snd_pcm_access_mask_t *dst, const snd_pcm_access_mask_t *src);
00752 void snd_pcm_access_mask_none(snd_pcm_access_mask_t *mask);
00753 void snd_pcm_access_mask_any(snd_pcm_access_mask_t *mask);
00754 int snd_pcm_access_mask_test(const snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
00755 int snd_pcm_access_mask_empty(const snd_pcm_access_mask_t *mask);
00756 void snd_pcm_access_mask_set(snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
00757 void snd_pcm_access_mask_reset(snd_pcm_access_mask_t *mask, snd_pcm_access_t val);
00758 
00768 size_t snd_pcm_format_mask_sizeof(void);
00773 #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)
00774 int snd_pcm_format_mask_malloc(snd_pcm_format_mask_t **ptr);
00775 void snd_pcm_format_mask_free(snd_pcm_format_mask_t *obj);
00776 void snd_pcm_format_mask_copy(snd_pcm_format_mask_t *dst, const snd_pcm_format_mask_t *src);
00777 void snd_pcm_format_mask_none(snd_pcm_format_mask_t *mask);
00778 void snd_pcm_format_mask_any(snd_pcm_format_mask_t *mask);
00779 int snd_pcm_format_mask_test(const snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
00780 int snd_pcm_format_mask_empty(const snd_pcm_format_mask_t *mask);
00781 void snd_pcm_format_mask_set(snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
00782 void snd_pcm_format_mask_reset(snd_pcm_format_mask_t *mask, snd_pcm_format_t val);
00783 
00793 size_t snd_pcm_subformat_mask_sizeof(void);
00798 #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)
00799 int snd_pcm_subformat_mask_malloc(snd_pcm_subformat_mask_t **ptr);
00800 void snd_pcm_subformat_mask_free(snd_pcm_subformat_mask_t *obj);
00801 void snd_pcm_subformat_mask_copy(snd_pcm_subformat_mask_t *dst, const snd_pcm_subformat_mask_t *src);
00802 void snd_pcm_subformat_mask_none(snd_pcm_subformat_mask_t *mask);
00803 void snd_pcm_subformat_mask_any(snd_pcm_subformat_mask_t *mask);
00804 int snd_pcm_subformat_mask_test(const snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
00805 int snd_pcm_subformat_mask_empty(const snd_pcm_subformat_mask_t *mask);
00806 void snd_pcm_subformat_mask_set(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
00807 void snd_pcm_subformat_mask_reset(snd_pcm_subformat_mask_t *mask, snd_pcm_subformat_t val);
00808 
00818 size_t snd_pcm_status_sizeof(void);
00823 #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)
00824 int snd_pcm_status_malloc(snd_pcm_status_t **ptr);
00825 void snd_pcm_status_free(snd_pcm_status_t *obj);
00826 void snd_pcm_status_copy(snd_pcm_status_t *dst, const snd_pcm_status_t *src);
00827 snd_pcm_state_t snd_pcm_status_get_state(const snd_pcm_status_t *obj);
00828 void snd_pcm_status_get_trigger_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr);
00829 void snd_pcm_status_get_trigger_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
00830 void snd_pcm_status_get_tstamp(const snd_pcm_status_t *obj, snd_timestamp_t *ptr);
00831 void snd_pcm_status_get_htstamp(const snd_pcm_status_t *obj, snd_htimestamp_t *ptr);
00832 snd_pcm_sframes_t snd_pcm_status_get_delay(const snd_pcm_status_t *obj);
00833 snd_pcm_uframes_t snd_pcm_status_get_avail(const snd_pcm_status_t *obj);
00834 snd_pcm_uframes_t snd_pcm_status_get_avail_max(const snd_pcm_status_t *obj);
00835 snd_pcm_uframes_t snd_pcm_status_get_overrange(const snd_pcm_status_t *obj);
00836 
00846 const char *snd_pcm_type_name(snd_pcm_type_t type);
00847 const char *snd_pcm_stream_name(const snd_pcm_stream_t stream);
00848 const char *snd_pcm_access_name(const snd_pcm_access_t _access);
00849 const char *snd_pcm_format_name(const snd_pcm_format_t format);
00850 const char *snd_pcm_format_description(const snd_pcm_format_t format);
00851 const char *snd_pcm_subformat_name(const snd_pcm_subformat_t subformat);
00852 const char *snd_pcm_subformat_description(const snd_pcm_subformat_t subformat);
00853 snd_pcm_format_t snd_pcm_format_value(const char* name);
00854 const char *snd_pcm_tstamp_mode_name(const snd_pcm_tstamp_t mode);
00855 const char *snd_pcm_state_name(const snd_pcm_state_t state);
00856 
00866 int snd_pcm_dump(snd_pcm_t *pcm, snd_output_t *out);
00867 int snd_pcm_dump_hw_setup(snd_pcm_t *pcm, snd_output_t *out);
00868 int snd_pcm_dump_sw_setup(snd_pcm_t *pcm, snd_output_t *out);
00869 int snd_pcm_dump_setup(snd_pcm_t *pcm, snd_output_t *out);
00870 int snd_pcm_hw_params_dump(snd_pcm_hw_params_t *params, snd_output_t *out);
00871 int snd_pcm_sw_params_dump(snd_pcm_sw_params_t *params, snd_output_t *out);
00872 int snd_pcm_status_dump(snd_pcm_status_t *status, snd_output_t *out);
00873 
00883 int snd_pcm_mmap_begin(snd_pcm_t *pcm,
00884                        const snd_pcm_channel_area_t **areas,
00885                        snd_pcm_uframes_t *offset,
00886                        snd_pcm_uframes_t *frames);
00887 snd_pcm_sframes_t snd_pcm_mmap_commit(snd_pcm_t *pcm,
00888                                       snd_pcm_uframes_t offset,
00889                                       snd_pcm_uframes_t frames);
00890 snd_pcm_sframes_t snd_pcm_mmap_writei(snd_pcm_t *pcm, const void *buffer, snd_pcm_uframes_t size);
00891 snd_pcm_sframes_t snd_pcm_mmap_readi(snd_pcm_t *pcm, void *buffer, snd_pcm_uframes_t size);
00892 snd_pcm_sframes_t snd_pcm_mmap_writen(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);
00893 snd_pcm_sframes_t snd_pcm_mmap_readn(snd_pcm_t *pcm, void **bufs, snd_pcm_uframes_t size);                                                                
00894 
00904 int snd_pcm_format_signed(snd_pcm_format_t format);
00905 int snd_pcm_format_unsigned(snd_pcm_format_t format);
00906 int snd_pcm_format_linear(snd_pcm_format_t format);
00907 int snd_pcm_format_float(snd_pcm_format_t format);
00908 int snd_pcm_format_little_endian(snd_pcm_format_t format);
00909 int snd_pcm_format_big_endian(snd_pcm_format_t format);
00910 int snd_pcm_format_cpu_endian(snd_pcm_format_t format);
00911 int snd_pcm_format_width(snd_pcm_format_t format);                      /* in bits */
00912 int snd_pcm_format_physical_width(snd_pcm_format_t format);             /* in bits */
00913 snd_pcm_format_t snd_pcm_build_linear_format(int width, int pwidth, int unsignd, int big_endian);
00914 ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples);
00915 u_int8_t snd_pcm_format_silence(snd_pcm_format_t format);
00916 u_int16_t snd_pcm_format_silence_16(snd_pcm_format_t format);
00917 u_int32_t snd_pcm_format_silence_32(snd_pcm_format_t format);
00918 u_int64_t snd_pcm_format_silence_64(snd_pcm_format_t format);
00919 int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int samples);
00920 
00921 snd_pcm_sframes_t snd_pcm_bytes_to_frames(snd_pcm_t *pcm, ssize_t bytes);
00922 ssize_t snd_pcm_frames_to_bytes(snd_pcm_t *pcm, snd_pcm_sframes_t frames);
00923 long snd_pcm_bytes_to_samples(snd_pcm_t *pcm, ssize_t bytes);
00924 ssize_t snd_pcm_samples_to_bytes(snd_pcm_t *pcm, long samples);
00925 
00926 int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset,
00927                          unsigned int samples, snd_pcm_format_t format);
00928 int snd_pcm_areas_silence(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset,
00929                           unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format);
00930 int snd_pcm_area_copy(const snd_pcm_channel_area_t *dst_channel, snd_pcm_uframes_t dst_offset,
00931                       const snd_pcm_channel_area_t *src_channel, snd_pcm_uframes_t src_offset,
00932                       unsigned int samples, snd_pcm_format_t format);
00933 int snd_pcm_areas_copy(const snd_pcm_channel_area_t *dst_channels, snd_pcm_uframes_t dst_offset,
00934                        const snd_pcm_channel_area_t *src_channels, snd_pcm_uframes_t src_offset,
00935                        unsigned int channels, snd_pcm_uframes_t frames, snd_pcm_format_t format);
00936 
00947 typedef enum _snd_pcm_hook_type {
00948         SND_PCM_HOOK_TYPE_HW_PARAMS = 0,
00949         SND_PCM_HOOK_TYPE_HW_FREE,
00950         SND_PCM_HOOK_TYPE_CLOSE,
00951         SND_PCM_HOOK_TYPE_LAST = SND_PCM_HOOK_TYPE_CLOSE
00952 } snd_pcm_hook_type_t;
00953 
00955 typedef struct _snd_pcm_hook snd_pcm_hook_t;
00957 typedef int (*snd_pcm_hook_func_t)(snd_pcm_hook_t *hook);
00958 snd_pcm_t *snd_pcm_hook_get_pcm(snd_pcm_hook_t *hook);
00959 void *snd_pcm_hook_get_private(snd_pcm_hook_t *hook);
00960 void snd_pcm_hook_set_private(snd_pcm_hook_t *hook, void *private_data);
00961 int snd_pcm_hook_add(snd_pcm_hook_t **hookp, snd_pcm_t *pcm,
00962                      snd_pcm_hook_type_t type,
00963                      snd_pcm_hook_func_t func, void *private_data);
00964 int snd_pcm_hook_remove(snd_pcm_hook_t *hook);
00965 
00976 typedef struct _snd_pcm_scope_ops {
00980         int (*enable)(snd_pcm_scope_t *scope);
00984         void (*disable)(snd_pcm_scope_t *scope);
00988         void (*start)(snd_pcm_scope_t *scope);
00992         void (*stop)(snd_pcm_scope_t *scope);
00996         void (*update)(snd_pcm_scope_t *scope);
01000         void (*reset)(snd_pcm_scope_t *scope);
01004         void (*close)(snd_pcm_scope_t *scope);
01005 } snd_pcm_scope_ops_t;
01006 
01007 snd_pcm_uframes_t snd_pcm_meter_get_bufsize(snd_pcm_t *pcm);
01008 unsigned int snd_pcm_meter_get_channels(snd_pcm_t *pcm);
01009 unsigned int snd_pcm_meter_get_rate(snd_pcm_t *pcm);
01010 snd_pcm_uframes_t snd_pcm_meter_get_now(snd_pcm_t *pcm);
01011 snd_pcm_uframes_t snd_pcm_meter_get_boundary(snd_pcm_t *pcm);
01012 int snd_pcm_meter_add_scope(snd_pcm_t *pcm, snd_pcm_scope_t *scope);
01013 snd_pcm_scope_t *snd_pcm_meter_search_scope(snd_pcm_t *pcm, const char *name);
01014 int snd_pcm_scope_malloc(snd_pcm_scope_t **ptr);
01015 void snd_pcm_scope_set_ops(snd_pcm_scope_t *scope, snd_pcm_scope_ops_t *val);
01016 void snd_pcm_scope_set_name(snd_pcm_scope_t *scope, const char *val);
01017 const char *snd_pcm_scope_get_name(snd_pcm_scope_t *scope);
01018 void *snd_pcm_scope_get_callback_private(snd_pcm_scope_t *scope);
01019 void snd_pcm_scope_set_callback_private(snd_pcm_scope_t *scope, void *val);
01020 int snd_pcm_scope_s16_open(snd_pcm_t *pcm, const char *name,
01021                            snd_pcm_scope_t **scopep);
01022 int16_t *snd_pcm_scope_s16_get_channel_buffer(snd_pcm_scope_t *scope,
01023                                               unsigned int channel);
01024 
01035 typedef enum _snd_spcm_latency {
01038         SND_SPCM_LATENCY_STANDARD = 0,
01041         SND_SPCM_LATENCY_MEDIUM,
01044         SND_SPCM_LATENCY_REALTIME
01045 } snd_spcm_latency_t;
01046 
01048 typedef enum _snd_spcm_xrun_type {
01050         SND_SPCM_XRUN_IGNORE = 0,
01052         SND_SPCM_XRUN_STOP
01053 } snd_spcm_xrun_type_t;
01054 
01056 typedef enum _snd_spcm_duplex_type {
01058         SND_SPCM_DUPLEX_LIBERAL = 0,
01060         SND_SPCM_DUPLEX_PEDANTIC
01061 } snd_spcm_duplex_type_t;
01062 
01063 int snd_spcm_init(snd_pcm_t *pcm,
01064                   unsigned int rate,
01065                   unsigned int channels,
01066                   snd_pcm_format_t format,
01067                   snd_pcm_subformat_t subformat,
01068                   snd_spcm_latency_t latency,
01069                   snd_pcm_access_t _access,
01070                   snd_spcm_xrun_type_t xrun_type);
01071 
01072 int snd_spcm_init_duplex(snd_pcm_t *playback_pcm,
01073                          snd_pcm_t *capture_pcm,
01074                          unsigned int rate,
01075                          unsigned int channels,
01076                          snd_pcm_format_t format,
01077                          snd_pcm_subformat_t subformat,
01078                          snd_spcm_latency_t latency,
01079                          snd_pcm_access_t _access,
01080                          snd_spcm_xrun_type_t xrun_type,
01081                          snd_spcm_duplex_type_t duplex_type);
01082 
01083 int snd_spcm_init_get_params(snd_pcm_t *pcm,
01084                              unsigned int *rate,
01085                              snd_pcm_uframes_t *buffer_size,
01086                              snd_pcm_uframes_t *period_size);
01087 
01097 /* Deprecated functions, for compatibility */
01098 const char *snd_pcm_start_mode_name(snd_pcm_start_t mode);
01099 const char *snd_pcm_xrun_mode_name(snd_pcm_xrun_t mode);
01100 int snd_pcm_sw_params_set_start_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_start_t val);
01101 snd_pcm_start_t snd_pcm_sw_params_get_start_mode(const snd_pcm_sw_params_t *params);
01102 int snd_pcm_sw_params_set_xrun_mode(snd_pcm_t *pcm, snd_pcm_sw_params_t *params, snd_pcm_xrun_t val);
01103 snd_pcm_xrun_t snd_pcm_sw_params_get_xrun_mode(const snd_pcm_sw_params_t *params);
01104 
01107 #ifdef __cplusplus
01108 }
01109 #endif
01110 
01111 #endif /* __ALSA_PCM_H */

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