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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 #include "alsa_midi.h"
00041
00042 typedef void (*ReadCopyFunction) (jack_default_audio_sample_t *dst, char *src,
00043 unsigned long src_bytes,
00044 unsigned long src_skip_bytes);
00045 typedef void (*WriteCopyFunction) (char *dst, jack_default_audio_sample_t *src,
00046 unsigned long src_bytes,
00047 unsigned long dst_skip_bytes,
00048 dither_state_t *state);
00049 typedef void (*CopyCopyFunction) (char *dst, char *src,
00050 unsigned long src_bytes,
00051 unsigned long dst_skip_bytes,
00052 unsigned long src_skip_byte);
00053
00054 typedef struct _alsa_driver {
00055
00056 JACK_DRIVER_NT_DECL
00057
00058 int poll_timeout;
00059 jack_time_t poll_last;
00060 jack_time_t poll_next;
00061 char **playback_addr;
00062 char **capture_addr;
00063 const snd_pcm_channel_area_t *capture_areas;
00064 const snd_pcm_channel_area_t *playback_areas;
00065 struct pollfd *pfd;
00066 unsigned int playback_nfds;
00067 unsigned int capture_nfds;
00068 unsigned long interleave_unit;
00069 unsigned long *capture_interleave_skip;
00070 unsigned long *playback_interleave_skip;
00071 channel_t max_nchannels;
00072 channel_t user_nchannels;
00073 channel_t playback_nchannels;
00074 channel_t capture_nchannels;
00075 unsigned long playback_sample_bytes;
00076 unsigned long capture_sample_bytes;
00077
00078 jack_nframes_t frame_rate;
00079 jack_nframes_t frames_per_cycle;
00080 jack_nframes_t capture_frame_latency;
00081 jack_nframes_t playback_frame_latency;
00082
00083 unsigned long *silent;
00084 char *alsa_name_playback;
00085 char *alsa_name_capture;
00086 char *alsa_driver;
00087 bitset_t channels_not_done;
00088 bitset_t channels_done;
00089 snd_pcm_format_t playback_sample_format;
00090 snd_pcm_format_t capture_sample_format;
00091 float max_sample_val;
00092 unsigned long user_nperiods;
00093 unsigned int playback_nperiods;
00094 unsigned int capture_nperiods;
00095 unsigned long last_mask;
00096 snd_ctl_t *ctl_handle;
00097 snd_pcm_t *playback_handle;
00098 snd_pcm_t *capture_handle;
00099 snd_pcm_hw_params_t *playback_hw_params;
00100 snd_pcm_sw_params_t *playback_sw_params;
00101 snd_pcm_hw_params_t *capture_hw_params;
00102 snd_pcm_sw_params_t *capture_sw_params;
00103 jack_hardware_t *hw;
00104 ClockSyncStatus *clock_sync_data;
00105 jack_client_t *client;
00106 JSList *capture_ports;
00107 JSList *playback_ports;
00108 JSList *monitor_ports;
00109
00110 unsigned long input_monitor_mask;
00111
00112 char soft_mode;
00113 char hw_monitoring;
00114 char hw_metering;
00115 char all_monitor_in;
00116 char capture_and_playback_not_synced;
00117 char playback_interleaved;
00118 char capture_interleaved;
00119 char with_monitor_ports;
00120 char has_clock_sync_reporting;
00121 char has_hw_monitoring;
00122 char has_hw_metering;
00123 char quirk_bswap;
00124
00125 ReadCopyFunction read_via_copy;
00126 WriteCopyFunction write_via_copy;
00127 CopyCopyFunction channel_copy;
00128
00129 int dither;
00130 dither_state_t *dither_state;
00131
00132 SampleClockMode clock_mode;
00133 JSList *clock_sync_listeners;
00134 pthread_mutex_t clock_sync_lock;
00135 unsigned long next_clock_sync_listener_id;
00136
00137 int running;
00138 int run;
00139
00140 int poll_late;
00141 int xrun_count;
00142 int process_count;
00143
00144 alsa_midi_t *midi;
00145 int xrun_recovery;
00146
00147 } alsa_driver_t;
00148
00149 static inline void
00150 alsa_driver_mark_channel_done (alsa_driver_t *driver, channel_t chn) {
00151 bitset_remove (driver->channels_not_done, chn);
00152 driver->silent[chn] = 0;
00153 }
00154
00155 static inline void
00156 alsa_driver_silence_on_channel (alsa_driver_t *driver, channel_t chn,
00157 jack_nframes_t nframes) {
00158 if (driver->playback_interleaved) {
00159 memset_interleave
00160 (driver->playback_addr[chn],
00161 0, nframes * driver->playback_sample_bytes,
00162 driver->interleave_unit,
00163 driver->playback_interleave_skip[chn]);
00164 } else {
00165 memset (driver->playback_addr[chn], 0,
00166 nframes * driver->playback_sample_bytes);
00167 }
00168 alsa_driver_mark_channel_done (driver,chn);
00169 }
00170
00171 static inline void
00172 alsa_driver_silence_on_channel_no_mark (alsa_driver_t *driver, channel_t chn,
00173 jack_nframes_t nframes) {
00174 if (driver->playback_interleaved) {
00175 memset_interleave
00176 (driver->playback_addr[chn],
00177 0, nframes * driver->playback_sample_bytes,
00178 driver->interleave_unit,
00179 driver->playback_interleave_skip[chn]);
00180 } else {
00181 memset (driver->playback_addr[chn], 0,
00182 nframes * driver->playback_sample_bytes);
00183 }
00184 }
00185
00186 static inline void
00187 alsa_driver_read_from_channel (alsa_driver_t *driver,
00188 channel_t channel,
00189 jack_default_audio_sample_t *buf,
00190 jack_nframes_t nsamples)
00191 {
00192 driver->read_via_copy (buf,
00193 driver->capture_addr[channel],
00194 nsamples,
00195 driver->capture_interleave_skip[channel]);
00196 }
00197
00198 static inline void
00199 alsa_driver_write_to_channel (alsa_driver_t *driver,
00200 channel_t channel,
00201 jack_default_audio_sample_t *buf,
00202 jack_nframes_t nsamples)
00203 {
00204 driver->write_via_copy (driver->playback_addr[channel],
00205 buf,
00206 nsamples,
00207 driver->playback_interleave_skip[channel],
00208 driver->dither_state+channel);
00209 alsa_driver_mark_channel_done (driver, channel);
00210 }
00211
00212 static inline void
00213 alsa_driver_copy_channel (alsa_driver_t *driver,
00214 channel_t input_channel,
00215 channel_t output_channel,
00216 jack_nframes_t nsamples) {
00217
00218 driver->channel_copy (driver->playback_addr[output_channel],
00219 driver->capture_addr[input_channel],
00220 nsamples * driver->playback_sample_bytes,
00221 driver->playback_interleave_skip[output_channel],
00222 driver->capture_interleave_skip[input_channel]);
00223 alsa_driver_mark_channel_done (driver, output_channel);
00224 }
00225
00226 void alsa_driver_silence_untouched_channels (alsa_driver_t *driver,
00227 jack_nframes_t nframes);
00228 void alsa_driver_set_clock_sync_status (alsa_driver_t *driver, channel_t chn,
00229 ClockSyncStatus status);
00230 int alsa_driver_listen_for_clock_sync_status (alsa_driver_t *,
00231 ClockSyncListenerFunction,
00232 void *arg);
00233 int alsa_driver_stop_listen_for_clock_sync_status (alsa_driver_t *,
00234 unsigned int);
00235 void alsa_driver_clock_sync_notify (alsa_driver_t *, channel_t chn,
00236 ClockSyncStatus);
00237
00238 #endif