[deliverable/linux.git] / include / sound / pcm_params.h

#ifndef __SOUND_PCM_PARAMS_H
#define __SOUND_PCM_PARAMS_H

/*
 *  PCM params helpers
 *  Copyright (c) by Abramo Bagnara <abramo@alsa-project.org>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

extern int snd_pcm_hw_param_mask(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params,
				 snd_pcm_hw_param_t var, const struct snd_mask *val);
extern unsigned int snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params,
					       snd_pcm_hw_param_t var, int *dir);
extern unsigned int snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params,
					       snd_pcm_hw_param_t var, int *dir);
extern int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params,
				 snd_pcm_hw_param_t var, unsigned int val, int dir);
extern int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params,
					snd_pcm_hw_param_t var);
extern int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params,
				 snd_pcm_hw_param_t var, unsigned int val, int dir);

/* To share the same code we have  alsa-lib */
#define INLINE static inline
#define assert(a) (void)(a)

#define SNDRV_MASK_BITS	64	/* we use so far 64bits only */
#define SNDRV_MASK_SIZE	(SNDRV_MASK_BITS / 32)
#define MASK_OFS(i)	((i) >> 5)
#define MASK_BIT(i)	(1U << ((i) & 31))

INLINE unsigned int ld2(u_int32_t v)
{
        unsigned r = 0;

        if (v >= 0x10000) {
                v >>= 16;
                r += 16;
        }
        if (v >= 0x100) {
                v >>= 8;
                r += 8;
        }
        if (v >= 0x10) {
                v >>= 4;
                r += 4;
        }
        if (v >= 4) {
                v >>= 2;
                r += 2;
        }
        if (v >= 2)
                r++;
        return r;
}

INLINE size_t snd_mask_sizeof(void)
{
	return sizeof(struct snd_mask);
}

INLINE void snd_mask_none(struct snd_mask *mask)
{
	memset(mask, 0, sizeof(*mask));
}

INLINE void snd_mask_any(struct snd_mask *mask)
{
	memset(mask, 0xff, SNDRV_MASK_SIZE * sizeof(u_int32_t));
}

INLINE int snd_mask_empty(const struct snd_mask *mask)
{
	int i;
	for (i = 0; i < SNDRV_MASK_SIZE; i++)
		if (mask->bits[i])
			return 0;
	return 1;
}

INLINE unsigned int snd_mask_min(const struct snd_mask *mask)
{
	int i;
	assert(!snd_mask_empty(mask));
	for (i = 0; i < SNDRV_MASK_SIZE; i++) {
		if (mask->bits[i])
			return ffs(mask->bits[i]) - 1 + (i << 5);
	}
	return 0;
}

INLINE unsigned int snd_mask_max(const struct snd_mask *mask)
{
	int i;
	assert(!snd_mask_empty(mask));
	for (i = SNDRV_MASK_SIZE - 1; i >= 0; i--) {
		if (mask->bits[i])
			return ld2(mask->bits[i]) + (i << 5);
	}
	return 0;
}

INLINE void snd_mask_set(struct snd_mask *mask, unsigned int val)
{
	assert(val <= SNDRV_MASK_BITS);
	mask->bits[MASK_OFS(val)] |= MASK_BIT(val);
}

INLINE void snd_mask_reset(struct snd_mask *mask, unsigned int val)
{
	assert(val <= SNDRV_MASK_BITS);
	mask->bits[MASK_OFS(val)] &= ~MASK_BIT(val);
}

INLINE void snd_mask_set_range(struct snd_mask *mask, unsigned int from, unsigned int to)
{
	unsigned int i;
	assert(to <= SNDRV_MASK_BITS && from <= to);
	for (i = from; i <= to; i++)
		mask->bits[MASK_OFS(i)] |= MASK_BIT(i);
}

INLINE void snd_mask_reset_range(struct snd_mask *mask, unsigned int from, unsigned int to)
{
	unsigned int i;
	assert(to <= SNDRV_MASK_BITS && from <= to);
	for (i = from; i <= to; i++)
		mask->bits[MASK_OFS(i)] &= ~MASK_BIT(i);
}

INLINE void snd_mask_leave(struct snd_mask *mask, unsigned int val)
{
	unsigned int v;
	assert(val <= SNDRV_MASK_BITS);
	v = mask->bits[MASK_OFS(val)] & MASK_BIT(val);
	snd_mask_none(mask);
	mask->bits[MASK_OFS(val)] = v;
}

INLINE void snd_mask_intersect(struct snd_mask *mask, const struct snd_mask *v)
{
	int i;
	for (i = 0; i < SNDRV_MASK_SIZE; i++)
		mask->bits[i] &= v->bits[i];
}

INLINE int snd_mask_eq(const struct snd_mask *mask, const struct snd_mask *v)
{
	return ! memcmp(mask, v, SNDRV_MASK_SIZE * sizeof(u_int32_t));
}

INLINE void snd_mask_copy(struct snd_mask *mask, const struct snd_mask *v)
{
	*mask = *v;
}

INLINE int snd_mask_test(const struct snd_mask *mask, unsigned int val)
{
	assert(val <= SNDRV_MASK_BITS);
	return mask->bits[MASK_OFS(val)] & MASK_BIT(val);
}

INLINE int snd_mask_single(const struct snd_mask *mask)
{
	int i, c = 0;
	assert(!snd_mask_empty(mask));
	for (i = 0; i < SNDRV_MASK_SIZE; i++) {
		if (! mask->bits[i])
			continue;
		if (mask->bits[i] & (mask->bits[i] - 1))
			return 0;
		if (c)
			return 0;
		c++;
	}
	return 1;
}

INLINE int snd_mask_refine(struct snd_mask *mask, const struct snd_mask *v)
{
	struct snd_mask old;
	assert(!snd_mask_empty(mask));
	snd_mask_copy(&old, mask);
	snd_mask_intersect(mask, v);
	if (snd_mask_empty(mask))
		return -EINVAL;
	return !snd_mask_eq(mask, &old);
}

INLINE int snd_mask_refine_first(struct snd_mask *mask)
{
	assert(!snd_mask_empty(mask));
	if (snd_mask_single(mask))
		return 0;
	snd_mask_leave(mask, snd_mask_min(mask));
	return 1;
}

INLINE int snd_mask_refine_last(struct snd_mask *mask)
{
	assert(!snd_mask_empty(mask));
	if (snd_mask_single(mask))
		return 0;
	snd_mask_leave(mask, snd_mask_max(mask));
	return 1;
}

INLINE int snd_mask_refine_min(struct snd_mask *mask, unsigned int val)
{
	assert(!snd_mask_empty(mask));
	if (snd_mask_min(mask) >= val)
		return 0;
	snd_mask_reset_range(mask, 0, val - 1);
	if (snd_mask_empty(mask))
		return -EINVAL;
	return 1;
}

INLINE int snd_mask_refine_max(struct snd_mask *mask, unsigned int val)
{
	assert(!snd_mask_empty(mask));
	if (snd_mask_max(mask) <= val)
		return 0;
	snd_mask_reset_range(mask, val + 1, SNDRV_MASK_BITS);
	if (snd_mask_empty(mask))
		return -EINVAL;
	return 1;
}

INLINE int snd_mask_refine_set(struct snd_mask *mask, unsigned int val)
{
	int changed;
	assert(!snd_mask_empty(mask));
	changed = !snd_mask_single(mask);
	snd_mask_leave(mask, val);
	if (snd_mask_empty(mask))
		return -EINVAL;
	return changed;
}

INLINE int snd_mask_value(const struct snd_mask *mask)
{
	assert(!snd_mask_empty(mask));
	return snd_mask_min(mask);
}

INLINE void snd_interval_any(struct snd_interval *i)
{
	i->min = 0;
	i->openmin = 0;
	i->max = UINT_MAX;
	i->openmax = 0;
	i->integer = 0;
	i->empty = 0;
}

INLINE void snd_interval_none(struct snd_interval *i)
{
	i->empty = 1;
}

INLINE int snd_interval_checkempty(const struct snd_interval *i)
{
	return (i->min > i->max ||
		(i->min == i->max && (i->openmin || i->openmax)));
}

INLINE int snd_interval_empty(const struct snd_interval *i)
{
	return i->empty;
}

INLINE int snd_interval_single(const struct snd_interval *i)
{
	assert(!snd_interval_empty(i));
	return (i->min == i->max || 
		(i->min + 1 == i->max && i->openmax));
}

INLINE int snd_interval_value(const struct snd_interval *i)
{
	assert(snd_interval_single(i));
	return i->min;
}

INLINE int snd_interval_min(const struct snd_interval *i)
{
	assert(!snd_interval_empty(i));
	return i->min;
}

INLINE int snd_interval_max(const struct snd_interval *i)
{
	unsigned int v;
	assert(!snd_interval_empty(i));
	v = i->max;
	if (i->openmax)
		v--;
	return v;
}

INLINE int snd_interval_test(const struct snd_interval *i, unsigned int val)
{
	return !((i->min > val || (i->min == val && i->openmin) ||
		  i->max < val || (i->max == val && i->openmax)));
}

INLINE void snd_interval_copy(struct snd_interval *d, const struct snd_interval *s)
{
	*d = *s;
}

INLINE int snd_interval_setinteger(struct snd_interval *i)
{
	if (i->integer)
		return 0;
	if (i->openmin && i->openmax && i->min == i->max)
		return -EINVAL;
	i->integer = 1;
	return 1;
}

INLINE int snd_interval_eq(const struct snd_interval *i1, const struct snd_interval *i2)
{
	if (i1->empty)
		return i2->empty;
	if (i2->empty)
		return i1->empty;
	return i1->min == i2->min && i1->openmin == i2->openmin &&
		i1->max == i2->max && i1->openmax == i2->openmax;
}

static inline unsigned int add(unsigned int a, unsigned int b)
{
	if (a >= UINT_MAX - b)
		return UINT_MAX;
	return a + b;
}

static inline unsigned int sub(unsigned int a, unsigned int b)
{
	if (a > b)
		return a - b;
	return 0;
}

#undef INLINE
#undef assert

#endif /* __SOUND_PCM_PARAMS_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __SOUND_PCM_PARAMS_H
	2	#define __SOUND_PCM_PARAMS_H
	3
	4	/*
	5	* PCM params helpers
	6	* Copyright (c) by Abramo Bagnara <abramo@alsa-project.org>
	7	*
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*
	23	*/
	24
877211f5 TI	25	extern int snd_pcm_hw_param_mask(struct snd_pcm_substream pcm, struct snd_pcm_hw_params params,
	26	snd_pcm_hw_param_t var, const struct snd_mask *val);
	27	extern unsigned int snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params,
1da177e4	28	snd_pcm_hw_param_t var, int *dir);
877211f5	29	extern unsigned int snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params,
1da177e4	30	snd_pcm_hw_param_t var, int *dir);
877211f5	31	extern int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params,
1da177e4	32	snd_pcm_hw_param_t var, unsigned int val, int dir);
877211f5	33	extern int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params,
1da177e4	34	snd_pcm_hw_param_t var);
877211f5	35	extern int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params,
1da177e4 LT	36	snd_pcm_hw_param_t var, unsigned int val, int dir);
	37
	38	/* To share the same code we have alsa-lib */
	39	#define INLINE static inline
	40	#define assert(a) (void)(a)
	41
	42	#define SNDRV_MASK_BITS 64 /* we use so far 64bits only */
	43	#define SNDRV_MASK_SIZE (SNDRV_MASK_BITS / 32)
	44	#define MASK_OFS(i) ((i) >> 5)
	45	#define MASK_BIT(i) (1U << ((i) & 31))
	46
	47	INLINE unsigned int ld2(u_int32_t v)
	48	{
	49	unsigned r = 0;
	50
	51	if (v >= 0x10000) {
	52	v >>= 16;
	53	r += 16;
	54	}
	55	if (v >= 0x100) {
	56	v >>= 8;
	57	r += 8;
	58	}
	59	if (v >= 0x10) {
	60	v >>= 4;
	61	r += 4;
	62	}
	63	if (v >= 4) {
	64	v >>= 2;
	65	r += 2;
	66	}
	67	if (v >= 2)
	68	r++;
	69	return r;
	70	}
	71
	72	INLINE size_t snd_mask_sizeof(void)
	73	{
877211f5	74	return sizeof(struct snd_mask);
1da177e4 LT	75	}
1da177e4 LT	76
877211f5	77	INLINE void snd_mask_none(struct snd_mask *mask)
1da177e4 LT	78	{
	79	memset(mask, 0, sizeof(*mask));
	80	}
	81
877211f5	82	INLINE void snd_mask_any(struct snd_mask *mask)
1da177e4 LT	83	{
	84	memset(mask, 0xff, SNDRV_MASK_SIZE * sizeof(u_int32_t));
	85	}
	86
877211f5	87	INLINE int snd_mask_empty(const struct snd_mask *mask)
1da177e4 LT	88	{
	89	int i;
	90	for (i = 0; i < SNDRV_MASK_SIZE; i++)
	91	if (mask->bits[i])
	92	return 0;
	93	return 1;
	94	}
	95
877211f5	96	INLINE unsigned int snd_mask_min(const struct snd_mask *mask)
1da177e4 LT	97	{
	98	int i;
	99	assert(!snd_mask_empty(mask));
	100	for (i = 0; i < SNDRV_MASK_SIZE; i++) {
	101	if (mask->bits[i])
	102	return ffs(mask->bits[i]) - 1 + (i << 5);
	103	}
	104	return 0;
	105	}
	106
877211f5	107	INLINE unsigned int snd_mask_max(const struct snd_mask *mask)
1da177e4 LT	108	{
	109	int i;
	110	assert(!snd_mask_empty(mask));
	111	for (i = SNDRV_MASK_SIZE - 1; i >= 0; i--) {
	112	if (mask->bits[i])
	113	return ld2(mask->bits[i]) + (i << 5);
	114	}
	115	return 0;
	116	}
	117
877211f5	118	INLINE void snd_mask_set(struct snd_mask *mask, unsigned int val)
1da177e4 LT	119	{
	120	assert(val <= SNDRV_MASK_BITS);
	121	mask->bits[MASK_OFS(val)] \|= MASK_BIT(val);
	122	}
	123
877211f5	124	INLINE void snd_mask_reset(struct snd_mask *mask, unsigned int val)
1da177e4 LT	125	{
	126	assert(val <= SNDRV_MASK_BITS);
	127	mask->bits[MASK_OFS(val)] &= ~MASK_BIT(val);
	128	}
	129
877211f5	130	INLINE void snd_mask_set_range(struct snd_mask *mask, unsigned int from, unsigned int to)
1da177e4 LT	131	{
	132	unsigned int i;
	133	assert(to <= SNDRV_MASK_BITS && from <= to);
	134	for (i = from; i <= to; i++)
	135	mask->bits[MASK_OFS(i)] \|= MASK_BIT(i);
	136	}
	137
877211f5	138	INLINE void snd_mask_reset_range(struct snd_mask *mask, unsigned int from, unsigned int to)
1da177e4 LT	139	{
	140	unsigned int i;
	141	assert(to <= SNDRV_MASK_BITS && from <= to);
	142	for (i = from; i <= to; i++)
	143	mask->bits[MASK_OFS(i)] &= ~MASK_BIT(i);
	144	}
	145
877211f5	146	INLINE void snd_mask_leave(struct snd_mask *mask, unsigned int val)
1da177e4 LT	147	{
	148	unsigned int v;
	149	assert(val <= SNDRV_MASK_BITS);
	150	v = mask->bits[MASK_OFS(val)] & MASK_BIT(val);
	151	snd_mask_none(mask);
	152	mask->bits[MASK_OFS(val)] = v;
	153	}
	154
877211f5	155	INLINE void snd_mask_intersect(struct snd_mask mask, const struct snd_mask v)
1da177e4 LT	156	{
	157	int i;
	158	for (i = 0; i < SNDRV_MASK_SIZE; i++)
	159	mask->bits[i] &= v->bits[i];
	160	}
	161
877211f5	162	INLINE int snd_mask_eq(const struct snd_mask mask, const struct snd_mask v)
1da177e4 LT	163	{
	164	return ! memcmp(mask, v, SNDRV_MASK_SIZE * sizeof(u_int32_t));
	165	}
	166
877211f5	167	INLINE void snd_mask_copy(struct snd_mask mask, const struct snd_mask v)
1da177e4 LT	168	{
	169	mask = v;
	170	}
	171
877211f5	172	INLINE int snd_mask_test(const struct snd_mask *mask, unsigned int val)
1da177e4 LT	173	{
	174	assert(val <= SNDRV_MASK_BITS);
	175	return mask->bits[MASK_OFS(val)] & MASK_BIT(val);
	176	}
	177
877211f5	178	INLINE int snd_mask_single(const struct snd_mask *mask)
1da177e4 LT	179	{
	180	int i, c = 0;
	181	assert(!snd_mask_empty(mask));
	182	for (i = 0; i < SNDRV_MASK_SIZE; i++) {
	183	if (! mask->bits[i])
	184	continue;
	185	if (mask->bits[i] & (mask->bits[i] - 1))
	186	return 0;
	187	if (c)
	188	return 0;
	189	c++;
	190	}
	191	return 1;
	192	}
	193
877211f5	194	INLINE int snd_mask_refine(struct snd_mask mask, const struct snd_mask v)
1da177e4	195	{
877211f5	196	struct snd_mask old;
1da177e4 LT	197	assert(!snd_mask_empty(mask));
	198	snd_mask_copy(&old, mask);
	199	snd_mask_intersect(mask, v);
	200	if (snd_mask_empty(mask))
	201	return -EINVAL;
	202	return !snd_mask_eq(mask, &old);
	203	}
	204
877211f5	205	INLINE int snd_mask_refine_first(struct snd_mask *mask)
1da177e4 LT	206	{
	207	assert(!snd_mask_empty(mask));
	208	if (snd_mask_single(mask))
	209	return 0;
	210	snd_mask_leave(mask, snd_mask_min(mask));
	211	return 1;
	212	}
	213
877211f5	214	INLINE int snd_mask_refine_last(struct snd_mask *mask)
1da177e4 LT	215	{
	216	assert(!snd_mask_empty(mask));
	217	if (snd_mask_single(mask))
	218	return 0;
	219	snd_mask_leave(mask, snd_mask_max(mask));
	220	return 1;
	221	}
	222
877211f5	223	INLINE int snd_mask_refine_min(struct snd_mask *mask, unsigned int val)
1da177e4 LT	224	{
	225	assert(!snd_mask_empty(mask));
	226	if (snd_mask_min(mask) >= val)
	227	return 0;
	228	snd_mask_reset_range(mask, 0, val - 1);
	229	if (snd_mask_empty(mask))
	230	return -EINVAL;
	231	return 1;
	232	}
	233
877211f5	234	INLINE int snd_mask_refine_max(struct snd_mask *mask, unsigned int val)
1da177e4 LT	235	{
	236	assert(!snd_mask_empty(mask));
	237	if (snd_mask_max(mask) <= val)
	238	return 0;
	239	snd_mask_reset_range(mask, val + 1, SNDRV_MASK_BITS);
	240	if (snd_mask_empty(mask))
	241	return -EINVAL;
	242	return 1;
	243	}
	244
877211f5	245	INLINE int snd_mask_refine_set(struct snd_mask *mask, unsigned int val)
1da177e4 LT	246	{
	247	int changed;
	248	assert(!snd_mask_empty(mask));
	249	changed = !snd_mask_single(mask);
	250	snd_mask_leave(mask, val);
	251	if (snd_mask_empty(mask))
	252	return -EINVAL;
	253	return changed;
	254	}
	255
877211f5	256	INLINE int snd_mask_value(const struct snd_mask *mask)
1da177e4 LT	257	{
	258	assert(!snd_mask_empty(mask));
	259	return snd_mask_min(mask);
	260	}
	261
877211f5	262	INLINE void snd_interval_any(struct snd_interval *i)
1da177e4 LT	263	{
	264	i->min = 0;
	265	i->openmin = 0;
	266	i->max = UINT_MAX;
	267	i->openmax = 0;
	268	i->integer = 0;
	269	i->empty = 0;
	270	}
	271
877211f5	272	INLINE void snd_interval_none(struct snd_interval *i)
1da177e4 LT	273	{
	274	i->empty = 1;
	275	}
	276
877211f5	277	INLINE int snd_interval_checkempty(const struct snd_interval *i)
1da177e4 LT	278	{
	279	return (i->min > i->max \|\|
	280	(i->min == i->max && (i->openmin \|\| i->openmax)));
	281	}
	282
877211f5	283	INLINE int snd_interval_empty(const struct snd_interval *i)
1da177e4 LT	284	{
	285	return i->empty;
	286	}
	287
877211f5	288	INLINE int snd_interval_single(const struct snd_interval *i)
1da177e4 LT	289	{
	290	assert(!snd_interval_empty(i));
	291	return (i->min == i->max \|\|
	292	(i->min + 1 == i->max && i->openmax));
	293	}
	294
877211f5	295	INLINE int snd_interval_value(const struct snd_interval *i)
1da177e4 LT	296	{
	297	assert(snd_interval_single(i));
	298	return i->min;
	299	}
	300
877211f5	301	INLINE int snd_interval_min(const struct snd_interval *i)
1da177e4 LT	302	{
	303	assert(!snd_interval_empty(i));
	304	return i->min;
	305	}
	306
877211f5	307	INLINE int snd_interval_max(const struct snd_interval *i)
1da177e4 LT	308	{
	309	unsigned int v;
	310	assert(!snd_interval_empty(i));
	311	v = i->max;
	312	if (i->openmax)
	313	v--;
	314	return v;
	315	}
	316
877211f5	317	INLINE int snd_interval_test(const struct snd_interval *i, unsigned int val)
1da177e4 LT	318	{
	319	return !((i->min > val \|\| (i->min == val && i->openmin) \|\|
	320	i->max < val \|\| (i->max == val && i->openmax)));
	321	}
	322
877211f5	323	INLINE void snd_interval_copy(struct snd_interval d, const struct snd_interval s)
1da177e4 LT	324	{
	325	d = s;
	326	}
	327
877211f5	328	INLINE int snd_interval_setinteger(struct snd_interval *i)
1da177e4 LT	329	{
	330	if (i->integer)
	331	return 0;
	332	if (i->openmin && i->openmax && i->min == i->max)
	333	return -EINVAL;
	334	i->integer = 1;
	335	return 1;
	336	}
	337
877211f5	338	INLINE int snd_interval_eq(const struct snd_interval i1, const struct snd_interval i2)
1da177e4 LT	339	{
	340	if (i1->empty)
	341	return i2->empty;
	342	if (i2->empty)
	343	return i1->empty;
	344	return i1->min == i2->min && i1->openmin == i2->openmin &&
	345	i1->max == i2->max && i1->openmax == i2->openmax;
	346	}
	347
	348	static inline unsigned int add(unsigned int a, unsigned int b)
	349	{
	350	if (a >= UINT_MAX - b)
	351	return UINT_MAX;
	352	return a + b;
	353	}
	354
	355	static inline unsigned int sub(unsigned int a, unsigned int b)
	356	{
	357	if (a > b)
	358	return a - b;
	359	return 0;
	360	}
	361
	362	#undef INLINE
	363	#undef assert
	364
	365	#endif /* __SOUND_PCM_PARAMS_H */
	366