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timer.h

00001 00028 #ifndef __ALSA_TIMER_H 00029 #define __ALSA_TIMER_H 00030 00031 #ifdef __cplusplus 00032 extern "C" { 00033 #endif 00034 00042 #define SND_TIMER_DLSYM_VERSION _dlsym_timer_001 00043 00044 #define SND_TIMER_QUERY_DLSYM_VERSION _dlsym_timer_query_001 00045 00047 typedef struct _snd_timer_id snd_timer_id_t; 00049 typedef struct _snd_timer_ginfo snd_timer_ginfo_t; 00051 typedef struct _snd_timer_gparams snd_timer_gparams_t; 00053 typedef struct _snd_timer_gstatus snd_timer_gstatus_t; 00055 typedef struct _snd_timer_info snd_timer_info_t; 00057 typedef struct _snd_timer_params snd_timer_params_t; 00059 typedef struct _snd_timer_status snd_timer_status_t; 00061 typedef enum _snd_timer_class { 00062 SND_TIMER_CLASS_NONE = -1, 00063 SND_TIMER_CLASS_SLAVE = 0, 00064 SND_TIMER_CLASS_GLOBAL, 00065 SND_TIMER_CLASS_CARD, 00066 SND_TIMER_CLASS_PCM, 00067 SND_TIMER_CLASS_LAST = SND_TIMER_CLASS_PCM 00068 } snd_timer_class_t; 00069 00071 typedef enum _snd_timer_slave_class { 00072 SND_TIMER_SCLASS_NONE = 0, 00073 SND_TIMER_SCLASS_APPLICATION, 00074 SND_TIMER_SCLASS_SEQUENCER, 00075 SND_TIMER_SCLASS_OSS_SEQUENCER, 00076 SND_TIMER_SCLASS_LAST = SND_TIMER_SCLASS_OSS_SEQUENCER 00077 } snd_timer_slave_class_t; 00078 00080 typedef enum _snd_timer_event { 00081 SND_TIMER_EVENT_RESOLUTION = 0, /* val = resolution in ns */ 00082 SND_TIMER_EVENT_TICK, /* val = ticks */ 00083 SND_TIMER_EVENT_START, /* val = resolution in ns */ 00084 SND_TIMER_EVENT_STOP, /* val = 0 */ 00085 SND_TIMER_EVENT_CONTINUE, /* val = resolution in ns */ 00086 SND_TIMER_EVENT_PAUSE, /* val = 0 */ 00087 SND_TIMER_EVENT_EARLY, /* val = 0 */ 00088 /* master timer events for slave timer instances */ 00089 SND_TIMER_EVENT_MSTART = SND_TIMER_EVENT_START + 10, 00090 SND_TIMER_EVENT_MSTOP = SND_TIMER_EVENT_STOP + 10, 00091 SND_TIMER_EVENT_MCONTINUE = SND_TIMER_EVENT_CONTINUE + 10, 00092 SND_TIMER_EVENT_MPAUSE = SND_TIMER_EVENT_PAUSE + 10, 00093 } snd_timer_event_t; 00094 00096 typedef struct _snd_timer_read { 00097 unsigned int resolution; 00098 unsigned int ticks; 00099 } snd_timer_read_t; 00100 00102 typedef struct _snd_timer_tread { 00103 snd_timer_event_t event; 00104 snd_htimestamp_t tstamp; 00105 unsigned int val; 00106 } snd_timer_tread_t; 00107 00109 #define SND_TIMER_GLOBAL_SYSTEM 0 00110 00111 #define SND_TIMER_GLOBAL_RTC 1 00112 00114 #define SND_TIMER_OPEN_NONBLOCK (1<<0) 00115 00116 #define SND_TIMER_OPEN_TREAD (1<<1) 00117 00119 typedef enum _snd_timer_type { 00121 SND_TIMER_TYPE_HW = 0, 00123 SND_TIMER_TYPE_SHM, 00125 SND_TIMER_TYPE_INET 00126 } snd_timer_type_t; 00127 00129 typedef struct _snd_timer_query snd_timer_query_t; 00131 typedef struct _snd_timer snd_timer_t; 00132 00133 00134 int snd_timer_query_open(snd_timer_query_t **handle, const char *name, int mode); 00135 int snd_timer_query_open_lconf(snd_timer_query_t **handle, const char *name, int mode, snd_config_t *lconf); 00136 int snd_timer_query_close(snd_timer_query_t *handle); 00137 int snd_timer_query_next_device(snd_timer_query_t *handle, snd_timer_id_t *tid); 00138 int snd_timer_query_info(snd_timer_query_t *handle, snd_timer_ginfo_t *info); 00139 int snd_timer_query_params(snd_timer_query_t *handle, snd_timer_gparams_t *params); 00140 int snd_timer_query_status(snd_timer_query_t *handle, snd_timer_gstatus_t *status); 00141 00142 int snd_timer_open(snd_timer_t **handle, const char *name, int mode); 00143 int snd_timer_open_lconf(snd_timer_t **handle, const char *name, int mode, snd_config_t *lconf); 00144 int snd_timer_close(snd_timer_t *handle); 00145 int snd_timer_poll_descriptors_count(snd_timer_t *handle); 00146 int snd_timer_poll_descriptors(snd_timer_t *handle, struct pollfd *pfds, unsigned int space); 00147 int snd_timer_poll_descriptors_revents(snd_timer_t *timer, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); 00148 int snd_timer_info(snd_timer_t *handle, snd_timer_info_t *timer); 00149 int snd_timer_params(snd_timer_t *handle, snd_timer_params_t *params); 00150 int snd_timer_status(snd_timer_t *handle, snd_timer_status_t *status); 00151 int snd_timer_start(snd_timer_t *handle); 00152 int snd_timer_stop(snd_timer_t *handle); 00153 int snd_timer_continue(snd_timer_t *handle); 00154 ssize_t snd_timer_read(snd_timer_t *handle, void *buffer, size_t size); 00155 00156 size_t snd_timer_id_sizeof(void); 00158 #define snd_timer_id_alloca(ptr) do { assert(ptr); *ptr = (snd_timer_id_t *) alloca(snd_timer_id_sizeof()); memset(*ptr, 0, snd_timer_id_sizeof()); } while (0) 00159 int snd_timer_id_malloc(snd_timer_id_t **ptr); 00160 void snd_timer_id_free(snd_timer_id_t *obj); 00161 void snd_timer_id_copy(snd_timer_id_t *dst, const snd_timer_id_t *src); 00162 00163 void snd_timer_id_set_class(snd_timer_id_t *id, int dev_class); 00164 int snd_timer_id_get_class(snd_timer_id_t *id); 00165 void snd_timer_id_set_sclass(snd_timer_id_t *id, int dev_sclass); 00166 int snd_timer_id_get_sclass(snd_timer_id_t *id); 00167 void snd_timer_id_set_card(snd_timer_id_t *id, int card); 00168 int snd_timer_id_get_card(snd_timer_id_t *id); 00169 void snd_timer_id_set_device(snd_timer_id_t *id, int device); 00170 int snd_timer_id_get_device(snd_timer_id_t *id); 00171 void snd_timer_id_set_subdevice(snd_timer_id_t *id, int subdevice); 00172 int snd_timer_id_get_subdevice(snd_timer_id_t *id); 00173 00174 size_t snd_timer_info_sizeof(void); 00176 #define snd_timer_info_alloca(ptr) do { assert(ptr); *ptr = (snd_timer_info_t *) alloca(snd_timer_info_sizeof()); memset(*ptr, 0, snd_timer_info_sizeof()); } while (0) 00177 int snd_timer_info_malloc(snd_timer_info_t **ptr); 00178 void snd_timer_info_free(snd_timer_info_t *obj); 00179 void snd_timer_info_copy(snd_timer_info_t *dst, const snd_timer_info_t *src); 00180 00181 int snd_timer_info_is_slave(snd_timer_info_t * info); 00182 int snd_timer_info_get_card(snd_timer_info_t * info); 00183 const char *snd_timer_info_get_id(snd_timer_info_t * info); 00184 const char *snd_timer_info_get_name(snd_timer_info_t * info); 00185 long snd_timer_info_get_resolution(snd_timer_info_t * info); 00186 00187 size_t snd_timer_params_sizeof(void); 00189 #define snd_timer_params_alloca(ptr) do { assert(ptr); *ptr = (snd_timer_params_t *) alloca(snd_timer_params_sizeof()); memset(*ptr, 0, snd_timer_params_sizeof()); } while (0) 00190 int snd_timer_params_malloc(snd_timer_params_t **ptr); 00191 void snd_timer_params_free(snd_timer_params_t *obj); 00192 void snd_timer_params_copy(snd_timer_params_t *dst, const snd_timer_params_t *src); 00193 00194 int snd_timer_params_set_auto_start(snd_timer_params_t * params, int auto_start); 00195 int snd_timer_params_get_auto_start(snd_timer_params_t * params); 00196 int snd_timer_params_set_exclusive(snd_timer_params_t * params, int exclusive); 00197 int snd_timer_params_get_exclusive(snd_timer_params_t * params); 00198 int snd_timer_params_set_early_event(snd_timer_params_t * params, int early_event); 00199 int snd_timer_params_get_early_event(snd_timer_params_t * params); 00200 void snd_timer_params_set_ticks(snd_timer_params_t * params, long ticks); 00201 long snd_timer_params_get_ticks(snd_timer_params_t * params); 00202 void snd_timer_params_set_queue_size(snd_timer_params_t * params, long queue_size); 00203 long snd_timer_params_get_queue_size(snd_timer_params_t * params); 00204 void snd_timer_params_set_filter(snd_timer_params_t * params, unsigned int filter); 00205 unsigned int snd_timer_params_get_filter(snd_timer_params_t * params); 00206 00207 size_t snd_timer_status_sizeof(void); 00209 #define snd_timer_status_alloca(ptr) do { assert(ptr); *ptr = (snd_timer_status_t *) alloca(snd_timer_status_sizeof()); memset(*ptr, 0, snd_timer_status_sizeof()); } while (0) 00210 int snd_timer_status_malloc(snd_timer_status_t **ptr); 00211 void snd_timer_status_free(snd_timer_status_t *obj); 00212 void snd_timer_status_copy(snd_timer_status_t *dst, const snd_timer_status_t *src); 00213 00214 snd_htimestamp_t snd_timer_status_get_timestamp(snd_timer_status_t * status); 00215 long snd_timer_status_get_resolution(snd_timer_status_t * status); 00216 long snd_timer_status_get_lost(snd_timer_status_t * status); 00217 long snd_timer_status_get_overrun(snd_timer_status_t * status); 00218 long snd_timer_status_get_queue(snd_timer_status_t * status); 00219 00220 /* deprecated functions, for compatibility */ 00221 long snd_timer_info_get_ticks(snd_timer_info_t * info); 00222 00225 #ifdef __cplusplus 00226 } 00227 #endif 00228 00229 #endif

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