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jack2/linux/alsa/alsa_driver.h

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  1. /*

  2.     Copyright (C) 2001 Paul Davis

  3. 

  4.     This program is free software; you can redistribute it and/or modify

  5.     it under the terms of the GNU General Public License as published by

  6.     the Free Software Foundation; either version 2 of the License, or

  7.     (at your option) any later version.

  8. 

  9.     This program is distributed in the hope that it will be useful,

  10.     but WITHOUT ANY WARRANTY; without even the implied warranty of

  11.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  12.     GNU General Public License for more details.

  13. 

  14.     You should have received a copy of the GNU General Public License

  15.     along with this program; if not, write to the Free Software

  16.     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

  17. 

  18.     $Id: alsa_driver.h 945 2006-05-04 15:14:45Z pbd $

  19. */

  20. 

  21. #ifndef __jack_alsa_driver_h__

  22. #define __jack_alsa_driver_h__

  23. 

  24. #ifdef __QNXNTO__

  25. #include <sys/asoundlib.h>

  26. #else

  27. #include <alsa/asoundlib.h>

  28. #endif

  29. 

  30. #include "bitset.h"

  31. 

  32. #if __BYTE_ORDER == __LITTLE_ENDIAN

  33. #define IS_LE 0

  34. #define IS_BE 1

  35. #elif __BYTE_ORDER == __BIG_ENDIAN

  36. #define IS_LE 1

  37. #define IS_BE 0

  38. #endif

  39. 

  40. #define TRUE 1

  41. #define FALSE 0

  42. 

  43. #include "types.h"

  44. #include "hardware.h"

  45. #include "driver.h"

  46. #include "memops.h"

  47. #include "alsa_midi.h"

  48. 

  49. #ifdef __QNXNTO__

  50. #define SND_PCM_FORMAT_S16_LE      SND_PCM_SFMT_S16_LE

  51. #define SND_PCM_FORMAT_S16_BE      SND_PCM_SFMT_S16_BE

  52. #define SND_PCM_FORMAT_S24_LE      SND_PCM_SFMT_S24_LE

  53. #define SND_PCM_FORMAT_S24_BE      SND_PCM_SFMT_S24_BE

  54. #define SND_PCM_FORMAT_S32_LE      SND_PCM_SFMT_S32_LE

  55. #define SND_PCM_FORMAT_S32_BE      SND_PCM_SFMT_S32_BE

  56. #define SND_PCM_FORMAT_FLOAT_LE    SND_PCM_SFMT_FLOAT_LE

  57. #define SND_PCM_STATE_PREPARED     SND_PCM_STATUS_PREPARED

  58. #define SND_PCM_STATE_SUSPENDED    SND_PCM_STATUS_SUSPENDED

  59. #define SND_PCM_STATE_XRUN         SND_PCM_STATUS_UNDERRUN

  60. #define SND_PCM_STATE_RUNNING      SND_PCM_STATUS_RUNNING

  61. #define SND_PCM_STREAM_PLAYBACK    SND_PCM_CHANNEL_PLAYBACK

  62. #define SND_PCM_STREAM_CAPTURE     SND_PCM_CHANNEL_CAPTURE

  63. 

  64. typedef unsigned long              snd_pcm_uframes_t;

  65. typedef signed long                snd_pcm_sframes_t;

  66. typedef int32_t                    alsa_driver_default_format_t;

  67. #endif

  68. 

  69. #ifdef __cplusplus

  70. extern "C"

  71. {

  72. #endif

  73. 

  74. typedef void (*ReadCopyFunction)  (jack_default_audio_sample_t *dst, char *src,

  75.                                    unsigned long src_bytes,

  76.                                    unsigned long src_skip_bytes);

  77. typedef void (*WriteCopyFunction) (char *dst, jack_default_audio_sample_t *src,

  78.                                    unsigned long src_bytes,

  79.                                    unsigned long dst_skip_bytes,

  80.                                    dither_state_t *state);

  81. 

  82. typedef struct _alsa_device {

  83. #ifdef __QNXNTO__

  84.     unsigned int                  playback_sample_format;

  85.     unsigned int                  capture_sample_format;

  86.     void                          *capture_areas;

  87.     void                          *playback_areas;

  88.     void                          *capture_areas_ptr;

  89.     void                          *playback_areas_ptr;

  90. #else

  91.     snd_pcm_format_t              playback_sample_format;

  92.     snd_pcm_format_t              capture_sample_format;

  93.     const snd_pcm_channel_area_t *capture_areas;

  94.     const snd_pcm_channel_area_t *playback_areas;

  95. #endif

  96.     snd_pcm_t *playback_handle;

  97.     snd_pcm_t *capture_handle;

  98. 

  99.     char *playback_name;

  100.     char *capture_name;

  101. 

  102.     char **playback_addr;

  103.     char **capture_addr;

  104. 

  105.     channel_t playback_channel_offset;

  106.     channel_t capture_channel_offset;

  107. 

  108.     channel_t playback_nchannels;

  109.     channel_t capture_nchannels;

  110.     channel_t max_nchannels;

  111.     channel_t user_nchannels;

  112. 

  113.     bitset_t channels_not_done;

  114.     bitset_t channels_done;

  115. 

  116.     char quirk_bswap;

  117. 

  118.     ReadCopyFunction read_via_copy;

  119.     WriteCopyFunction write_via_copy;

  120. 

  121.     unsigned long interleave_unit;

  122.     unsigned long *capture_interleave_skip;

  123.     unsigned long *playback_interleave_skip;

  124. 

  125.     char playback_interleaved;

  126.     char capture_interleaved;

  127. 

  128.     unsigned long *silent;

  129. 

  130.     unsigned long playback_sample_bytes;

  131.     unsigned long capture_sample_bytes;

  132. 

  133.     /* device is 'snd_pcm_link' to a group, only 1 group of linked devices is allowed */

  134.     int capture_linked;

  135.     int playback_linked;

  136. 

  137.     int capture_xrun_count;

  138.     int playback_xrun_count;

  139. 

  140.     /* desired state of device, decided by JackAlsaDriver */

  141.     int capture_target_state;

  142.     int playback_target_state;

  143. 

  144.     jack_hardware_t *hw;

  145.     char *alsa_driver;

  146. } alsa_device_t;

  147. 

  148. typedef struct _alsa_driver {

  149. 

  150.     JACK_DRIVER_NT_DECL

  151. 

  152. #ifndef __QNXNTO__

  153.     snd_pcm_hw_params_t          *playback_hw_params;

  154.     snd_pcm_sw_params_t          *playback_sw_params;

  155.     snd_pcm_hw_params_t          *capture_hw_params;

  156.     snd_pcm_sw_params_t          *capture_sw_params;

  157. #endif

  158.     int                           poll_timeout_ms;

  159.     jack_time_t                   poll_last;

  160.     jack_time_t                   poll_next;

  161.     struct pollfd                *pfd;

  162.     unsigned int                  playback_nfds;

  163.     unsigned int                  capture_nfds;

  164.     channel_t                     playback_nchannels;

  165.     channel_t                     capture_nchannels;

  166. 

  167.     jack_nframes_t                frame_rate;

  168.     jack_nframes_t                frames_per_cycle;

  169.     jack_nframes_t                capture_frame_latency;

  170.     jack_nframes_t                playback_frame_latency;

  171. 

  172.     unsigned long                 user_nperiods;

  173.     unsigned int                  playback_nperiods;

  174.     unsigned int                  capture_nperiods;

  175.     snd_ctl_t                    *ctl_handle;

  176.     jack_client_t                *client;

  177. 

  178.     unsigned long input_monitor_mask;

  179. 

  180.     char soft_mode;

  181.     char hw_monitoring;

  182.     char hw_metering;

  183.     char all_monitor_in;

  184.     char with_monitor_ports;

  185.     char has_clock_sync_reporting;

  186.     char has_hw_monitoring;

  187.     char has_hw_metering;

  188. 

  189.     int             dither;

  190.     dither_state_t *dither_state;

  191. 

  192.     SampleClockMode clock_mode;

  193.     JSList *clock_sync_listeners;

  194.     pthread_mutex_t clock_sync_lock;

  195. 

  196.     int poll_late;

  197.     int xrun_count;

  198.     int process_count;

  199. 

  200.     alsa_midi_t *midi;

  201.     int xrun_recovery;

  202. 

  203.     alsa_device_t *devices;

  204.     int devices_count;

  205.     int devices_c_count;

  206.     int devices_p_count;

  207. 

  208.     int features;

  209. } alsa_driver_t;

  210. 

  211. typedef struct _alsa_device_info {

  212.     char *capture_name;

  213.     char *playback_name;

  214. 

  215.     int capture_channels;

  216.     int playback_channels;

  217. } alsa_device_info_t;

  218. 

  219. typedef struct _alsa_driver_info {

  220.     alsa_device_info_t *devices;

  221.     uint32_t devices_capture_size;

  222.     uint32_t devices_playback_size;

  223. 

  224.     char *midi_name;

  225.     alsa_midi_t *midi_driver;

  226. 

  227.     jack_nframes_t frame_rate;

  228.     jack_nframes_t frames_per_period;

  229.     int periods_n;

  230. 

  231.     DitherAlgorithm dither;

  232. 

  233.     int shorts_first;

  234. 

  235.     jack_nframes_t capture_latency;

  236.     jack_nframes_t playback_latency;

  237. 

  238.     // these 4 should be reworked as struct.features

  239.     int hw_monitoring;

  240.     int hw_metering;

  241.     int monitor;

  242.     int soft_mode;

  243. 

  244.     int features;

  245. } alsa_driver_info_t;

  246. 

  247. static inline void

  248. alsa_driver_mark_channel_done (alsa_driver_t *driver, alsa_device_t *device, channel_t chn) {

  249. 	bitset_remove (device->channels_not_done, chn);

  250. 	device->silent[chn] = 0;

  251. }

  252. 

  253. static inline void

  254. alsa_driver_silence_on_channel (alsa_driver_t *driver, alsa_device_t *device, channel_t chn,

  255. 				jack_nframes_t nframes) {

  256. 	if (device->playback_interleaved) {

  257. 		memset_interleave

  258. 			(device->playback_addr[chn],

  259. 			 0, nframes * device->playback_sample_bytes,

  260. 			 device->interleave_unit,

  261. 			 device->playback_interleave_skip[chn]);

  262. 	} else {

  263. 		memset (device->playback_addr[chn], 0,

  264. 			nframes * device->playback_sample_bytes);

  265. 	}

  266.     alsa_driver_mark_channel_done (driver, device, chn);

  267. }

  268. 

  269. static inline void

  270. alsa_driver_silence_on_channel_no_mark (alsa_driver_t *driver, alsa_device_t *device, channel_t chn,

  271. 					jack_nframes_t nframes) {

  272. 	if (device->playback_interleaved) {

  273. 		memset_interleave

  274. 			(device->playback_addr[chn],

  275. 			 0, nframes * device->playback_sample_bytes,

  276. 			 device->interleave_unit,

  277. 			 device->playback_interleave_skip[chn]);

  278. 	} else {

  279. 		memset (device->playback_addr[chn], 0,

  280. 			nframes * device->playback_sample_bytes);

  281. 	}

  282. }

  283. 

  284. static inline void

  285. alsa_driver_read_from_channel (alsa_driver_t *driver,

  286.                    alsa_device_t *device,

  287. 			       channel_t channel,

  288. 			       jack_default_audio_sample_t *buf,

  289. 			       jack_nframes_t nsamples)

  290. {

  291. 	device->read_via_copy (buf,

  292. 			       device->capture_addr[channel],

  293. 			       nsamples,

  294. 			       device->capture_interleave_skip[channel]);

  295. }

  296. 

  297. static inline void

  298. alsa_driver_write_to_channel (alsa_driver_t *driver,

  299.                   alsa_device_t *device,

  300. 			      channel_t channel,

  301. 			      jack_default_audio_sample_t *buf,

  302. 			      jack_nframes_t nsamples)

  303. {

  304. 	device->write_via_copy (device->playback_addr[channel],

  305. 				buf,

  306. 				nsamples,

  307. 				device->playback_interleave_skip[channel],

  308. 				driver->dither_state+channel);

  309. 	alsa_driver_mark_channel_done (driver, device, channel);

  310. }

  311. 

  312. int

  313. alsa_driver_reset_parameters (alsa_driver_t *driver,

  314. 			      jack_nframes_t frames_per_cycle,

  315. 			      jack_nframes_t user_nperiods,

  316. 			      jack_nframes_t rate);

  317. 

  318. jack_driver_t *

  319. alsa_driver_new (char *name, alsa_driver_info_t info, jack_client_t *client);

  320. 

  321. void

  322. alsa_driver_delete (alsa_driver_t *driver);

  323. 

  324. int

  325. alsa_driver_open (alsa_driver_t *driver);

  326. 

  327. int

  328. alsa_driver_start (alsa_driver_t *driver);

  329. 

  330. int

  331. alsa_driver_stop (alsa_driver_t *driver);

  332. 

  333. int

  334. alsa_driver_close (alsa_driver_t *driver);

  335. 

  336. jack_nframes_t

  337. alsa_driver_wait (alsa_driver_t *driver, int extra_fd, int *status, float

  338. 		  *delayed_usecs);

  339. 

  340. int

  341. alsa_driver_read (alsa_driver_t *driver, jack_nframes_t nframes);

  342. 

  343. int

  344. alsa_driver_write (alsa_driver_t* driver, jack_nframes_t nframes);

  345. 

  346. // Code implemented in JackAlsaDriver.cpp

  347. 

  348. void ReadInput(alsa_device_t *device, jack_nframes_t orig_nframes, snd_pcm_sframes_t contiguous, snd_pcm_sframes_t nread);

  349. void MonitorInput();

  350. void ClearOutput();

  351. void WriteOutput(alsa_device_t *device, jack_nframes_t orig_nframes, snd_pcm_sframes_t contiguous, snd_pcm_sframes_t nwritten);

  352. void SetTime(jack_time_t time);

  353. 

  354. int Restart();

  355. 

  356. #ifdef __cplusplus

  357. }

  358. #endif

  359. 

  360. 

  361. #endif /* __jack_alsa_driver_h__ */