Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 | /* * include/asm-sparc/audioio.h * * Sparc Audio Midlayer * Copyright (C) 1996 Thomas K. Dyas (tdyas@noc.rutgers.edu) */ #ifndef _AUDIOIO_H_ #define _AUDIOIO_H_ /* * SunOS/Solaris /dev/audio interface */ #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) #include <linux/types.h> #include <linux/time.h> #include <linux/ioctl.h> #endif /* * This structure contains state information for audio device IO streams. */ typedef struct audio_prinfo { /* * The following values describe the audio data encoding. */ unsigned int sample_rate; /* samples per second */ unsigned int channels; /* number of interleaved channels */ unsigned int precision; /* bit-width of each sample */ unsigned int encoding; /* data encoding method */ /* * The following values control audio device configuration */ unsigned int gain; /* gain level: 0 - 255 */ unsigned int port; /* selected I/O port (see below) */ unsigned int avail_ports; /* available I/O ports (see below) */ unsigned int _xxx[2]; /* Reserved for future use */ unsigned int buffer_size; /* I/O buffer size */ /* * The following values describe driver state */ unsigned int samples; /* number of samples converted */ unsigned int eof; /* End Of File counter (play only) */ unsigned char pause; /* non-zero for pause, zero to resume */ unsigned char error; /* non-zero if overflow/underflow */ unsigned char waiting; /* non-zero if a process wants access */ unsigned char balance; /* stereo channel balance */ unsigned short minordev; /* * The following values are read-only state flags */ unsigned char open; /* non-zero if open access permitted */ unsigned char active; /* non-zero if I/O is active */ } audio_prinfo_t; /* * This structure describes the current state of the audio device. */ typedef struct audio_info { /* * Per-stream information */ audio_prinfo_t play; /* output status information */ audio_prinfo_t record; /* input status information */ /* * Per-unit/channel information */ unsigned int monitor_gain; /* input to output mix: 0 - 255 */ unsigned char output_muted; /* non-zero if output is muted */ unsigned char _xxx[3]; /* Reserved for future use */ unsigned int _yyy[3]; /* Reserved for future use */ } audio_info_t; /* * Audio encoding types */ #define AUDIO_ENCODING_NONE (0) /* no encoding assigned */ #define AUDIO_ENCODING_ULAW (1) /* u-law encoding */ #define AUDIO_ENCODING_ALAW (2) /* A-law encoding */ #define AUDIO_ENCODING_LINEAR (3) /* Linear PCM encoding */ #define AUDIO_ENCODING_FLOAT (4) /* IEEE float (-1. <-> +1.) */ #define AUDIO_ENCODING_DVI (104) /* DVI ADPCM */ #define AUDIO_ENCODING_LINEAR8 (105) /* 8 bit UNSIGNED */ #define AUDIO_ENCODING_LINEARLE (106) /* Linear PCM LE encoding */ /* * These ranges apply to record, play, and monitor gain values */ #define AUDIO_MIN_GAIN (0) /* minimum gain value */ #define AUDIO_MAX_GAIN (255) /* maximum gain value */ /* * These values apply to the balance field to adjust channel gain values */ #define AUDIO_LEFT_BALANCE (0) /* left channel only */ #define AUDIO_MID_BALANCE (32) /* equal left/right channel */ #define AUDIO_RIGHT_BALANCE (64) /* right channel only */ #define AUDIO_BALANCE_SHIFT (3) /* * Generic minimum/maximum limits for number of channels, both modes */ #define AUDIO_MIN_PLAY_CHANNELS (1) #define AUDIO_MAX_PLAY_CHANNELS (4) #define AUDIO_MIN_REC_CHANNELS (1) #define AUDIO_MAX_REC_CHANNELS (4) /* * Generic minimum/maximum limits for sample precision */ #define AUDIO_MIN_PLAY_PRECISION (8) #define AUDIO_MAX_PLAY_PRECISION (32) #define AUDIO_MIN_REC_PRECISION (8) #define AUDIO_MAX_REC_PRECISION (32) /* * Define some convenient names for typical audio ports */ /* * output ports (several may be enabled simultaneously) */ #define AUDIO_SPEAKER 0x01 /* output to built-in speaker */ #define AUDIO_HEADPHONE 0x02 /* output to headphone jack */ #define AUDIO_LINE_OUT 0x04 /* output to line out */ /* * input ports (usually only one at a time) */ #define AUDIO_MICROPHONE 0x01 /* input from microphone */ #define AUDIO_LINE_IN 0x02 /* input from line in */ #define AUDIO_CD 0x04 /* input from on-board CD inputs */ #define AUDIO_INTERNAL_CD_IN AUDIO_CD /* input from internal CDROM */ #define AUDIO_ANALOG_LOOPBACK 0x40 /* input from output */ /* * This macro initializes an audio_info structure to 'harmless' values. * Note that (~0) might not be a harmless value for a flag that was * a signed int. */ #define AUDIO_INITINFO(i) { \ unsigned int *__x__; \ for (__x__ = (unsigned int *)(i); \ (char *) __x__ < (((char *)(i)) + sizeof (audio_info_t)); \ *__x__++ = ~0); \ } /* * These allow testing for what the user wants to set */ #define AUD_INITVALUE (~0) #define Modify(X) ((unsigned int)(X) != AUD_INITVALUE) #define Modifys(X) ((X) != (unsigned short)AUD_INITVALUE) #define Modifyc(X) ((X) != (unsigned char)AUD_INITVALUE) /* * Parameter for the AUDIO_GETDEV ioctl to determine current * audio devices. */ #define MAX_AUDIO_DEV_LEN (16) typedef struct audio_device { char name[MAX_AUDIO_DEV_LEN]; char version[MAX_AUDIO_DEV_LEN]; char config[MAX_AUDIO_DEV_LEN]; } audio_device_t; /* * Ioctl calls for the audio device. */ /* * AUDIO_GETINFO retrieves the current state of the audio device. * * AUDIO_SETINFO copies all fields of the audio_info structure whose * values are not set to the initialized value (-1) to the device state. * It performs an implicit AUDIO_GETINFO to return the new state of the * device. Note that the record.samples and play.samples fields are set * to the last value before the AUDIO_SETINFO took effect. This allows * an application to reset the counters while atomically retrieving the * last value. * * AUDIO_DRAIN suspends the calling process until the write buffers are * empty. * * AUDIO_GETDEV returns a structure of type audio_device_t which contains * three strings. The string "name" is a short identifying string (for * example, the SBus Fcode name string), the string "version" identifies * the current version of the device, and the "config" string identifies * the specific configuration of the audio stream. All fields are * device-dependent -- see the device specific manual pages for details. * * AUDIO_GETDEV_SUNOS returns a number which is an audio device defined * herein (making it not too portable) * * AUDIO_FLUSH stops all playback and recording, clears all queued buffers, * resets error counters, and restarts recording and playback as appropriate * for the current sampling mode. */ #define AUDIO_GETINFO _IOR('A', 1, audio_info_t) #define AUDIO_SETINFO _IOWR('A', 2, audio_info_t) #define AUDIO_DRAIN _IO('A', 3) #define AUDIO_GETDEV _IOR('A', 4, audio_device_t) #define AUDIO_GETDEV_SUNOS _IOR('A', 4, int) #define AUDIO_FLUSH _IO('A', 5) /* Define possible audio hardware configurations for * old SunOS-style AUDIO_GETDEV ioctl */ #define AUDIO_DEV_UNKNOWN (0) /* not defined */ #define AUDIO_DEV_AMD (1) /* audioamd device */ #define AUDIO_DEV_SPEAKERBOX (2) /* dbri device with speakerbox */ #define AUDIO_DEV_CODEC (3) /* dbri device (internal speaker) */ #define AUDIO_DEV_CS4231 (5) /* cs4231 device */ /* * The following ioctl sets the audio device into an internal loopback mode, * if the hardware supports this. The argument is TRUE to set loopback, * FALSE to reset to normal operation. If the hardware does not support * internal loopback, the ioctl should fail with EINVAL. * Causes ADC data to be digitally mixed in and sent to the DAC. */ #define AUDIO_DIAG_LOOPBACK _IOW('A', 101, int) /* * Linux kernel internal implementation. */ #ifdef __KERNEL__ #include <linux/fs.h> #include <linux/tqueue.h> #include <linux/wait.h> #define SDF_OPEN_WRITE 0x00000001 #define SDF_OPEN_READ 0x00000002 struct sparcaudio_ringbuffer { __u8 *rb_start, *rb_end; /* start, end of this memory buffer */ __u8 *rb_in, *rb_out; /* input, output pointers */ int rb_fragsize; /* size of an audio frag */ int rb_numfrags; /* number of frags */ int rb_count, rb_hiwat, rb_lowat; /* bytes in use, hi/lo wat points */ int rb_bufsize; /* total size of buffer */ }; struct sparcaudio_driver { const char * name; struct sparcaudio_operations *ops; void *private; unsigned long flags; struct strevent *sd_siglist; /* duplex: 0=simplex, 1=duplex, 2=loop */ int sd_sigflags, duplex; /* Which audio device are we? */ int index; /* This device */ struct sbus_dev *dev; /* Processes blocked on open() sit here. */ wait_queue_head_t open_wait; /* Task queue for this driver's bottom half. */ struct tq_struct tqueue; /* Start of ring buffer support */ __u8 *input_buffer, *output_buffer; /* Support for a circular queue of output buffers. */ __u8 **output_buffers; size_t *output_sizes, output_size, output_buffer_size; int num_output_buffers, output_front, output_rear, output_offset; int output_count, output_active, playing_count, output_eof; wait_queue_head_t output_write_wait, output_drain_wait; char *output_notify; /* Support for a circular queue of input buffers. */ __u8 **input_buffers; size_t *input_sizes, input_size, input_buffer_size; int num_input_buffers, input_front, input_rear, input_offset; int input_count, input_active, recording_count; wait_queue_head_t input_read_wait; /* Hack to make it look like we support variable size buffers. */ int buffer_size; int mixer_modify_counter; }; struct sparcaudio_operations { int (*open)(struct inode *, struct file *, struct sparcaudio_driver *); void (*release)(struct inode *, struct file *, struct sparcaudio_driver *); int (*ioctl)(struct inode *, struct file *, unsigned int, unsigned long, struct sparcaudio_driver *); /* Ask driver to begin playing a buffer. */ void (*start_output)(struct sparcaudio_driver *, __u8 *, unsigned long); /* Ask driver to stop playing a buffer. */ void (*stop_output)(struct sparcaudio_driver *); /* Ask driver to begin recording into a buffer. */ void (*start_input)(struct sparcaudio_driver *, __u8 *, unsigned long); /* Ask driver to stop recording. */ void (*stop_input)(struct sparcaudio_driver *); /* Return driver name/version to caller. (/dev/audio specific) */ void (*sunaudio_getdev)(struct sparcaudio_driver *, audio_device_t *); /* Get and set the output volume. (0-255) */ int (*set_output_volume)(struct sparcaudio_driver *, int); int (*get_output_volume)(struct sparcaudio_driver *); /* Get and set the input volume. (0-255) */ int (*set_input_volume)(struct sparcaudio_driver *, int); int (*get_input_volume)(struct sparcaudio_driver *); /* Get and set the monitor volume. (0-255) */ int (*set_monitor_volume)(struct sparcaudio_driver *, int); int (*get_monitor_volume)(struct sparcaudio_driver *); /* Get and set the output balance. (0-64) */ int (*set_output_balance)(struct sparcaudio_driver *, int); int (*get_output_balance)(struct sparcaudio_driver *); /* Get and set the input balance. (0-64) */ int (*set_input_balance)(struct sparcaudio_driver *, int); int (*get_input_balance)(struct sparcaudio_driver *); /* Get and set the output channels. (1-4) */ int (*set_output_channels)(struct sparcaudio_driver *, int); int (*get_output_channels)(struct sparcaudio_driver *); /* Get and set the input channels. (1-4) */ int (*set_input_channels)(struct sparcaudio_driver *, int); int (*get_input_channels)(struct sparcaudio_driver *); /* Get and set the output precision. (8-32) */ int (*set_output_precision)(struct sparcaudio_driver *, int); int (*get_output_precision)(struct sparcaudio_driver *); /* Get and set the input precision. (8-32) */ int (*set_input_precision)(struct sparcaudio_driver *, int); int (*get_input_precision)(struct sparcaudio_driver *); /* Get and set the output port. () */ int (*set_output_port)(struct sparcaudio_driver *, int); int (*get_output_port)(struct sparcaudio_driver *); /* Get and set the input port. () */ int (*set_input_port)(struct sparcaudio_driver *, int); int (*get_input_port)(struct sparcaudio_driver *); /* Get and set the output encoding. () */ int (*set_output_encoding)(struct sparcaudio_driver *, int); int (*get_output_encoding)(struct sparcaudio_driver *); /* Get and set the input encoding. () */ int (*set_input_encoding)(struct sparcaudio_driver *, int); int (*get_input_encoding)(struct sparcaudio_driver *); /* Get and set the output rate. () */ int (*set_output_rate)(struct sparcaudio_driver *, int); int (*get_output_rate)(struct sparcaudio_driver *); /* Get and set the input rate. () */ int (*set_input_rate)(struct sparcaudio_driver *, int); int (*get_input_rate)(struct sparcaudio_driver *); /* Return driver number to caller. (SunOS /dev/audio specific) */ int (*sunaudio_getdev_sunos)(struct sparcaudio_driver *); /* Get available ports */ int (*get_output_ports)(struct sparcaudio_driver *); int (*get_input_ports)(struct sparcaudio_driver *); /* Get and set output mute */ int (*set_output_muted)(struct sparcaudio_driver *, int); int (*get_output_muted)(struct sparcaudio_driver *); /* Get and set output pause */ int (*set_output_pause)(struct sparcaudio_driver *, int); int (*get_output_pause)(struct sparcaudio_driver *); /* Get and set input pause */ int (*set_input_pause)(struct sparcaudio_driver *, int); int (*get_input_pause)(struct sparcaudio_driver *); /* Get and set output samples */ int (*set_output_samples)(struct sparcaudio_driver *, int); int (*get_output_samples)(struct sparcaudio_driver *); /* Get and set input samples */ int (*set_input_samples)(struct sparcaudio_driver *, int); int (*get_input_samples)(struct sparcaudio_driver *); /* Get and set output error */ int (*set_output_error)(struct sparcaudio_driver *, int); int (*get_output_error)(struct sparcaudio_driver *); /* Get and set input error */ int (*set_input_error)(struct sparcaudio_driver *, int); int (*get_input_error)(struct sparcaudio_driver *); /* Get supported encodings */ int (*get_formats)(struct sparcaudio_driver *); }; extern int register_sparcaudio_driver(struct sparcaudio_driver *, int); extern int unregister_sparcaudio_driver(struct sparcaudio_driver *, int); extern void sparcaudio_output_done(struct sparcaudio_driver *, int); extern void sparcaudio_input_done(struct sparcaudio_driver *, int); #endif /* Device minor numbers */ #define SPARCAUDIO_MIXER_MINOR 0 /* No sequencer (1) */ /* No midi (2) */ #define SPARCAUDIO_DSP_MINOR 3 #define SPARCAUDIO_AUDIO_MINOR 4 #define SPARCAUDIO_DSP16_MINOR 5 #define SPARCAUDIO_STATUS_MINOR 6 #define SPARCAUDIO_AUDIOCTL_MINOR 7 /* No sequencer l2 (8) */ /* No sound processor (9) */ /* allocate 2^SPARCAUDIO_DEVICE_SHIFT minors per audio device */ #define SPARCAUDIO_DEVICE_SHIFT 4 /* With the coming of dummy devices this should perhaps be as high as 5? */ #define SPARCAUDIO_MAX_DEVICES 3 /* Streams crap for realaudio */ typedef struct strevent { struct strevent *se_next; /* next event for this stream or NULL*/ struct strevent *se_prev; /* previous event for this stream or last * event if this is the first one*/ pid_t se_pid; /* process to be signaled */ short se_evs; /* events wanted */ } strevent_t; typedef struct stdata { struct stdata *sd_next ; /* all stdatas are linked together */ struct stdata *sd_prev ; struct strevent *sd_siglist; /* processes to be sent SIGPOLL */ int sd_sigflags; /* logical OR of all siglist events */ } stdata_t; #define I_NREAD _IOR('S',01, int) #define I_NREAD_SOLARIS (('S'<<8)|1) #define I_FLUSH _IO('S',05) #define I_FLUSH_SOLARIS (('S'<<8)|5) #define FLUSHR 1 /* flush read queue */ #define FLUSHW 2 /* flush write queue */ #define FLUSHRW 3 /* flush both queues */ #define I_SETSIG _IO('S',011) #define I_SETSIG_SOLARIS (('S'<<8)|11) #define S_INPUT 0x01 #define S_HIPRI 0x02 #define S_OUTPUT 0x04 #define S_MSG 0x08 #define S_ERROR 0x0010 #define S_HANGUP 0x0020 #define S_RDNORM 0x0040 #define S_WRNORM S_OUTPUT #define S_RDBAND 0x0080 #define S_WRBAND 0x0100 #define S_BANDURG 0x0200 #define S_ALL 0x03FF #define I_GETSIG _IOR('S',012,int) #define I_GETSIG_SOLARIS (('S'<<8)|12) /* Conversion between Sun and OSS volume settings */ static __inline__ int OSS_LEFT(int value) { return ((value & 0xff) % 101); } static __inline__ int OSS_RIGHT(int value) { return (((value >> 8) & 0xff) % 101); } static __inline__ int O_TO_S(int value) { return value * 255 / 100; } static __inline__ int S_TO_O(int value) { return value * 100 / 255; } static __inline__ int OSS_TO_GAIN(int value) { int l = O_TO_S(OSS_LEFT(value)); int r = O_TO_S(OSS_RIGHT(value)); return ((l > r) ? l : r); } static __inline__ int OSS_TO_LGAIN(int value) { int l = O_TO_S(OSS_LEFT(value)); int r = O_TO_S(OSS_RIGHT(value)); return ((l < r) ? l : r); } static __inline__ int OSS_TO_BAL(int value) { if (!OSS_TO_GAIN(value)) return AUDIO_MID_BALANCE; if (!OSS_TO_LGAIN(value)) { if (OSS_TO_GAIN(value) == OSS_TO_GAIN(OSS_RIGHT(value))) return AUDIO_RIGHT_BALANCE; else return AUDIO_LEFT_BALANCE; } if (OSS_TO_GAIN(value) == OSS_TO_GAIN(OSS_RIGHT(value))) return ((OSS_TO_GAIN(value) - OSS_TO_LGAIN(value)) >> AUDIO_BALANCE_SHIFT) + AUDIO_MID_BALANCE; else return AUDIO_MID_BALANCE - ((OSS_TO_GAIN(value) - OSS_TO_LGAIN(value)) >> AUDIO_BALANCE_SHIFT); } static __inline__ int BAL_TO_OSS(int value, unsigned char balance) { int l, r, adj; if (balance > 63) balance = 63; if (balance < AUDIO_MID_BALANCE) { l = (int)value * 100 / 255 + ((value * 100 % 255) > 0); adj = ((AUDIO_MID_BALANCE - balance) << AUDIO_BALANCE_SHIFT); if (adj < value) r = (int)(value - adj) * 100 / 255; else r = 0; } else if (balance > AUDIO_MID_BALANCE) { r = (int)value * 100 / 255 + ((value * 100 % 255) > 0); adj = ((balance - AUDIO_MID_BALANCE) << AUDIO_BALANCE_SHIFT); if (adj < value) l = (int)(value - adj) * 100 / 255; else l = 0; } else { l = r = (int)value * 100 / 255 + ((value * 100 % 255) > 0); } return ((r << 8) + l); } #ifdef __KERNEL__ /* OSS mixer ioctl port handling */ static __inline__ int OSS_PORT_AUDIO(struct sparcaudio_driver *drv, unsigned int set) { int p; if (drv->ops->get_output_port) { p = drv->ops->get_output_port(drv); if (p & set) return 0x6464; } return 0; } static __inline__ int OSS_IPORT_AUDIO(struct sparcaudio_driver *drv, unsigned int set) { int p; if (drv->ops->get_input_port) { p = drv->ops->get_input_port(drv); if (p & set) return 0x6464; } return 0; } static __inline__ void OSS_TWIDDLE_PORT(struct sparcaudio_driver *drv, unsigned int ioctl, unsigned int port, unsigned int set, unsigned int value) { if (ioctl == port) { int p; if (drv->ops->get_output_port && drv->ops->set_output_port) { p = drv->ops->get_output_port(drv); if ((value == 0) || ((p & set) && (OSS_LEFT(value) < 100))) drv->ops->set_output_port(drv, p & ~(set)); else drv->ops->set_output_port(drv, p | set); } } } static __inline__ void OSS_TWIDDLE_IPORT(struct sparcaudio_driver *drv, unsigned int ioctl, unsigned int port, unsigned int set, unsigned int value) { if (ioctl == port) { int p; if (drv->ops->get_input_port && drv->ops->set_input_port) { p = drv->ops->get_input_port(drv); if ((value == 0) || ((p & set) && (OSS_LEFT(value) < 100))) drv->ops->set_input_port(drv, p & ~(set)); else drv->ops->set_input_port(drv, p | set); } } } #endif /* __KERNEL__ */ #endif /* _AUDIOIO_H_ */ |