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00021 #ifndef __jack_alsa_driver_h__
00022 #define __jack_alsa_driver_h__
00023
00024 #include <alsa/asoundlib.h>
00025 #include "bitset.h"
00026
00027 #if __BYTE_ORDER == __LITTLE_ENDIAN
00028 #define IS_LE 0
00029 #define IS_BE 1
00030 #elif __BYTE_ORDER == __BIG_ENDIAN
00031 #define IS_LE 1
00032 #define IS_BE 0
00033 #endif
00034
00035 #include "types.h"
00036 #include "hardware.h"
00037 #include "driver.h"
00038 #include "memops.h"
00039
00040 typedef void (*ReadCopyFunction) (jack_default_audio_sample_t *dst, char *src,
00041 unsigned long src_bytes,
00042 unsigned long src_skip_bytes);
00043 typedef void (*WriteCopyFunction) (char *dst, jack_default_audio_sample_t *src,
00044 unsigned long src_bytes,
00045 unsigned long dst_skip_bytes,
00046 dither_state_t *state);
00047 typedef void (*CopyCopyFunction) (char *dst, char *src,
00048 unsigned long src_bytes,
00049 unsigned long dst_skip_bytes,
00050 unsigned long src_skip_byte);
00051
00052 typedef struct _alsa_driver {
00053
00054 JACK_DRIVER_NT_DECL
00055
00056 int poll_timeout;
00057 jack_time_t poll_last;
00058 jack_time_t poll_next;
00059 char **playback_addr;
00060 char **capture_addr;
00061 const snd_pcm_channel_area_t *capture_areas;
00062 const snd_pcm_channel_area_t *playback_areas;
00063 struct pollfd *pfd;
00064 unsigned int playback_nfds;
00065 unsigned int capture_nfds;
00066 unsigned long interleave_unit;
00067 unsigned long *capture_interleave_skip;
00068 unsigned long *playback_interleave_skip;
00069 channel_t max_nchannels;
00070 channel_t user_nchannels;
00071 channel_t playback_nchannels;
00072 channel_t capture_nchannels;
00073 unsigned long playback_sample_bytes;
00074 unsigned long capture_sample_bytes;
00075
00076 jack_nframes_t frame_rate;
00077 jack_nframes_t frames_per_cycle;
00078 jack_nframes_t capture_frame_latency;
00079 jack_nframes_t playback_frame_latency;
00080
00081 unsigned long *silent;
00082 char *alsa_name_playback;
00083 char *alsa_name_capture;
00084 char *alsa_driver;
00085 bitset_t channels_not_done;
00086 bitset_t channels_done;
00087 snd_pcm_format_t playback_sample_format;
00088 snd_pcm_format_t capture_sample_format;
00089 float max_sample_val;
00090 unsigned long user_nperiods;
00091 unsigned int playback_nperiods;
00092 unsigned int capture_nperiods;
00093 unsigned long last_mask;
00094 snd_ctl_t *ctl_handle;
00095 snd_pcm_t *playback_handle;
00096 snd_pcm_t *capture_handle;
00097 snd_pcm_hw_params_t *playback_hw_params;
00098 snd_pcm_sw_params_t *playback_sw_params;
00099 snd_pcm_hw_params_t *capture_hw_params;
00100 snd_pcm_sw_params_t *capture_sw_params;
00101 jack_hardware_t *hw;
00102 ClockSyncStatus *clock_sync_data;
00103 jack_client_t *client;
00104 JSList *capture_ports;
00105 JSList *playback_ports;
00106 JSList *monitor_ports;
00107
00108 unsigned long input_monitor_mask;
00109
00110 char soft_mode;
00111 char hw_monitoring;
00112 char hw_metering;
00113 char all_monitor_in;
00114 char capture_and_playback_not_synced;
00115 char playback_interleaved;
00116 char capture_interleaved;
00117 char with_monitor_ports;
00118 char has_clock_sync_reporting;
00119 char has_hw_monitoring;
00120 char has_hw_metering;
00121 char quirk_bswap;
00122
00123 ReadCopyFunction read_via_copy;
00124 WriteCopyFunction write_via_copy;
00125 CopyCopyFunction channel_copy;
00126
00127 int dither;
00128 dither_state_t *dither_state;
00129
00130 SampleClockMode clock_mode;
00131 JSList *clock_sync_listeners;
00132 pthread_mutex_t clock_sync_lock;
00133 unsigned long next_clock_sync_listener_id;
00134
00135 int running;
00136 int run;
00137
00138 int poll_late;
00139 int xrun_count;
00140 int process_count;
00141
00142 } alsa_driver_t;
00143
00144 static inline void
00145 alsa_driver_mark_channel_done (alsa_driver_t *driver, channel_t chn) {
00146 bitset_remove (driver->channels_not_done, chn);
00147 driver->silent[chn] = 0;
00148 }
00149
00150 static inline void
00151 alsa_driver_silence_on_channel (alsa_driver_t *driver, channel_t chn,
00152 jack_nframes_t nframes) {
00153 if (driver->playback_interleaved) {
00154 memset_interleave
00155 (driver->playback_addr[chn],
00156 0, nframes * driver->playback_sample_bytes,
00157 driver->interleave_unit,
00158 driver->playback_interleave_skip[chn]);
00159 } else {
00160 memset (driver->playback_addr[chn], 0,
00161 nframes * driver->playback_sample_bytes);
00162 }
00163 alsa_driver_mark_channel_done (driver,chn);
00164 }
00165
00166 static inline void
00167 alsa_driver_silence_on_channel_no_mark (alsa_driver_t *driver, channel_t chn,
00168 jack_nframes_t nframes) {
00169 if (driver->playback_interleaved) {
00170 memset_interleave
00171 (driver->playback_addr[chn],
00172 0, nframes * driver->playback_sample_bytes,
00173 driver->interleave_unit,
00174 driver->playback_interleave_skip[chn]);
00175 } else {
00176 memset (driver->playback_addr[chn], 0,
00177 nframes * driver->playback_sample_bytes);
00178 }
00179 }
00180
00181 static inline void
00182 alsa_driver_read_from_channel (alsa_driver_t *driver,
00183 channel_t channel,
00184 jack_default_audio_sample_t *buf,
00185 jack_nframes_t nsamples)
00186 {
00187 driver->read_via_copy (buf,
00188 driver->capture_addr[channel],
00189 nsamples,
00190 driver->capture_interleave_skip[channel]);
00191 }
00192
00193 static inline void
00194 alsa_driver_write_to_channel (alsa_driver_t *driver,
00195 channel_t channel,
00196 jack_default_audio_sample_t *buf,
00197 jack_nframes_t nsamples)
00198 {
00199 driver->write_via_copy (driver->playback_addr[channel],
00200 buf,
00201 nsamples,
00202 driver->playback_interleave_skip[channel],
00203 driver->dither_state+channel);
00204 alsa_driver_mark_channel_done (driver, channel);
00205 }
00206
00207 static inline void
00208 alsa_driver_copy_channel (alsa_driver_t *driver,
00209 channel_t input_channel,
00210 channel_t output_channel,
00211 jack_nframes_t nsamples) {
00212
00213 driver->channel_copy (driver->playback_addr[output_channel],
00214 driver->capture_addr[input_channel],
00215 nsamples * driver->playback_sample_bytes,
00216 driver->playback_interleave_skip[output_channel],
00217 driver->capture_interleave_skip[input_channel]);
00218 alsa_driver_mark_channel_done (driver, output_channel);
00219 }
00220
00221 void alsa_driver_silence_untouched_channels (alsa_driver_t *driver,
00222 jack_nframes_t nframes);
00223 void alsa_driver_set_clock_sync_status (alsa_driver_t *driver, channel_t chn,
00224 ClockSyncStatus status);
00225 int alsa_driver_listen_for_clock_sync_status (alsa_driver_t *,
00226 ClockSyncListenerFunction,
00227 void *arg);
00228 int alsa_driver_stop_listen_for_clock_sync_status (alsa_driver_t *,
00229 unsigned int);
00230 void alsa_driver_clock_sync_notify (alsa_driver_t *, channel_t chn,
00231 ClockSyncStatus);
00232
00233 #endif