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comparison src/haptic/linux/SDL_syshaptic.c @ 2480:b883974445fc gsoc2008_force_feedback

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Some more error reporting. Added periodic effect. Confirmed it works.
author Edgar Simo <bobbens@gmail.com>
date Tue, 01 Jul 2008 09:22:22 +0000
parents b9eb2cfe16cd
children 5d0ea4576f20
comparison
equal deleted inserted replaced
2479:b9eb2cfe16cd 2480:b883974445fc
33 #include <sys/types.h> 33 #include <sys/types.h>
34 #include <sys/stat.h> 34 #include <sys/stat.h>
35 #include <fcntl.h> 35 #include <fcntl.h>
36 #include <linux/limits.h> 36 #include <linux/limits.h>
37 #include <string.h> 37 #include <string.h>
38 #include <errno.h>
38 39
39 40
40 #define MAX_HAPTICS 32 41 #define MAX_HAPTICS 32
41 42
42 43
272 273
273 /* 274 /*
274 * Initializes the linux effect struct from a haptic_effect. 275 * Initializes the linux effect struct from a haptic_effect.
275 */ 276 */
276 static int 277 static int
277 SDL_SYS_ToFFEffect( struct ff_effect * dest, struct haptic_effect * src ) 278 SDL_SYS_ToFFEffect( struct ff_effect * dest, SDL_HapticEffect * src )
278 { 279 {
280 SDL_HapticConstant *constant;
281 SDL_HapticPeriodic *periodic;
282
283 /* Clear up */
279 SDL_memset(dest, 0, sizeof(struct ff_effect)); 284 SDL_memset(dest, 0, sizeof(struct ff_effect));
280 switch (src->effect.type) { 285
286 switch (src->type) {
281 case SDL_HAPTIC_CONSTANT: 287 case SDL_HAPTIC_CONSTANT:
288 constant = &src->constant;
289
290 /* Header */
282 dest->type = FF_CONSTANT; 291 dest->type = FF_CONSTANT;
292 dest->direction = constant->direction;
293
294 /* Replay */
295 dest->replay.length = constant->length;
296 dest->replay.delay = constant->delay;
297
298 /* Trigger */
299 dest->trigger.button = constant->button;
300 dest->trigger.interval = constant->interval;
301
302 /* Constant */
303 dest->u.constant.level = constant->level;
304
305 /* Envelope */
306 dest->u.constant.envelope.attack_length = constant->attack_length;
307 dest->u.constant.envelope.attack_level = constant->attack_level;
308 dest->u.constant.envelope.fade_length = constant->fade_length;
309 dest->u.constant.envelope.fade_level = constant->fade_level;
310
311 break;
312
313 case SDL_HAPTIC_PERIODIC:
314 periodic = &src->periodic;
315
316 /* Header */
317 dest->type = FF_PERIODIC;
318 dest->direction = periodic->direction;
319
320 /* Replay */
321 dest->replay.length = periodic->length;
322 dest->replay.delay = periodic->delay;
323
324 /* Trigger */
325 dest->trigger.button = periodic->button;
326 dest->trigger.interval = periodic->interval;
327
328 /* Constant */
329 dest->u.periodic.waveform = periodic->waveform;
330 dest->u.periodic.period = periodic->period;
331 dest->u.periodic.magnitude = periodic->magnitude;
332 dest->u.periodic.offset = periodic->offset;
333 dest->u.periodic.phase = periodic->phase;
334
335 /* Envelope */
336 dest->u.periodic.envelope.attack_length = periodic->attack_length;
337 dest->u.periodic.envelope.attack_level = periodic->attack_level;
338 dest->u.periodic.envelope.fade_length = periodic->fade_length;
339 dest->u.periodic.envelope.fade_level = periodic->fade_level;
283 340
284 break; 341 break;
285 342
286 default: 343 default:
287 SDL_SetError("Unknown haptic effect type."); 344 SDL_SetError("Unknown haptic effect type.");
293 350
294 /* 351 /*
295 * Creates a new haptic effect. 352 * Creates a new haptic effect.
296 */ 353 */
297 int 354 int
298 SDL_SYS_HapticNewEffect(SDL_Haptic * haptic, struct haptic_effect * effect) 355 SDL_SYS_HapticNewEffect(SDL_Haptic * haptic, struct haptic_effect * effect,
299 { 356 SDL_HapticEffect * base)
357 {
358 struct ff_effect * linux_effect;
359
300 /* Allocate the hardware effect */ 360 /* Allocate the hardware effect */
301 effect->hweffect = (struct haptic_hweffect *) 361 effect->hweffect = (struct haptic_hweffect *)
302 SDL_malloc(sizeof(struct haptic_hweffect)); 362 SDL_malloc(sizeof(struct haptic_hweffect));
303 if (effect->hweffect == NULL) { 363 if (effect->hweffect == NULL) {
304 SDL_OutOfMemory(); 364 SDL_OutOfMemory();
305 return -1; 365 return -1;
306 } 366 }
307 367
308 /* Prepare the ff_effect */ 368 /* Prepare the ff_effect */
309 if (SDL_SYS_ToFFEffect( &effect->hweffect->effect, effect ) != 0) { 369 linux_effect = &effect->hweffect->effect;
370 if (SDL_SYS_ToFFEffect( linux_effect, base ) != 0) {
310 return -1; 371 return -1;
311 } 372 }
312 effect->hweffect->effect.id = -1; /* Have the kernel give it an id */ 373 linux_effect->id = -1; /* Have the kernel give it an id */
313 374
314 /* Upload the effect */ 375 /* Upload the effect */
315 if (ioctl(haptic->hwdata->fd, EVIOCSFF, &effect->hweffect->effect) < 0) { 376 if (ioctl(haptic->hwdata->fd, EVIOCSFF, linux_effect) < 0) {
316 SDL_SetError("Error uploading effect to the haptic device."); 377 SDL_SetError("Error uploading effect to the haptic device: %s",
378 strerror(errno));
317 return -1; 379 return -1;
318 } 380 }
319 381
320 return 0; 382 return 0;
321 } 383 }