[GitHub/mt8127/android_kernel_alcatel_ttab.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
 *
 */

#include <sound/pcm.h>

int snd_pcm_hw_param_first(struct snd_pcm_substream *pcm, 
			   struct snd_pcm_hw_params *params,
			   snd_pcm_hw_param_t var, int *dir);
int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm, 
			  struct snd_pcm_hw_params *params,
			  snd_pcm_hw_param_t var, int *dir);
int snd_pcm_hw_param_value(const struct snd_pcm_hw_params *params,
			   snd_pcm_hw_param_t var, int *dir);

#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))

static 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;
}

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

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

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

static 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;
}

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

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

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

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

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

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

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

static 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];
}

static 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));
}

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

static inline int snd_mask_test(const struct snd_mask *mask, unsigned int val)
{
	return mask->bits[MASK_OFS(val)] & MASK_BIT(val);
}

static inline int snd_mask_single(const struct snd_mask *mask)
{
	int i, c = 0;
	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;
}

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

static inline int snd_mask_refine_first(struct snd_mask *mask)
{
	if (snd_mask_single(mask))
		return 0;
	snd_mask_leave(mask, snd_mask_min(mask));
	return 1;
}

static inline int snd_mask_refine_last(struct snd_mask *mask)
{
	if (snd_mask_single(mask))
		return 0;
	snd_mask_leave(mask, snd_mask_max(mask));
	return 1;
}

static inline int snd_mask_refine_min(struct snd_mask *mask, unsigned int val)
{
	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;
}

static inline int snd_mask_refine_max(struct snd_mask *mask, unsigned int val)
{
	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;
}

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

static inline int snd_mask_value(const struct snd_mask *mask)
{
	return snd_mask_min(mask);
}

static 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;
}

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

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

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

static inline int snd_interval_single(const struct snd_interval *i)
{
	return (i->min == i->max || 
		(i->min + 1 == i->max && i->openmax));
}

static inline int snd_interval_value(const struct snd_interval *i)
{
	return i->min;
}

static inline int snd_interval_min(const struct snd_interval *i)
{
	return i->min;
}

static inline int snd_interval_max(const struct snd_interval *i)
{
	unsigned int v;
	v = i->max;
	if (i->openmax)
		v--;
	return v;
}

static 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)));
}

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

static 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;
}

static 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;
}

#define params_access(p) ((__force snd_pcm_access_t)\
		snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_ACCESS)))
#define params_format(p) ((__force snd_pcm_format_t)\
		snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_FORMAT)))
#define params_subformat(p) \
	snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_SUBFORMAT))

static inline unsigned int
params_period_bytes(const struct snd_pcm_hw_params *p)
{
	return (params_period_size(p) *
		snd_pcm_format_physical_width(params_format(p)) *
		params_channels(p)) / 8;
}

#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
f3761c39 MB	25	#include <sound/pcm.h>
f3761c39 MB	26
e88e8ae6 TI	27	int snd_pcm_hw_param_first(struct snd_pcm_substream *pcm,
	28	struct snd_pcm_hw_params *params,
	29	snd_pcm_hw_param_t var, int *dir);
	30	int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm,
	31	struct snd_pcm_hw_params *params,
	32	snd_pcm_hw_param_t var, int *dir);
	33	int snd_pcm_hw_param_value(const struct snd_pcm_hw_params *params,
	34	snd_pcm_hw_param_t var, int *dir);
1da177e4	35
1da177e4 LT	36	#define SNDRV_MASK_BITS 64 /* we use so far 64bits only */
	37	#define SNDRV_MASK_SIZE (SNDRV_MASK_BITS / 32)
	38	#define MASK_OFS(i) ((i) >> 5)
	39	#define MASK_BIT(i) (1U << ((i) & 31))
	40
9bb22e21	41	static inline unsigned int ld2(u_int32_t v)
1da177e4 LT	42	{
	43	unsigned r = 0;
	44
	45	if (v >= 0x10000) {
	46	v >>= 16;
	47	r += 16;
	48	}
	49	if (v >= 0x100) {
	50	v >>= 8;
	51	r += 8;
	52	}
	53	if (v >= 0x10) {
	54	v >>= 4;
	55	r += 4;
	56	}
	57	if (v >= 4) {
	58	v >>= 2;
	59	r += 2;
	60	}
	61	if (v >= 2)
	62	r++;
	63	return r;
	64	}
	65
9bb22e21	66	static inline size_t snd_mask_sizeof(void)
1da177e4	67	{
877211f5	68	return sizeof(struct snd_mask);
1da177e4 LT	69	}
1da177e4 LT	70
9bb22e21	71	static inline void snd_mask_none(struct snd_mask *mask)
1da177e4 LT	72	{
	73	memset(mask, 0, sizeof(*mask));
	74	}
	75
9bb22e21	76	static inline void snd_mask_any(struct snd_mask *mask)
1da177e4 LT	77	{
	78	memset(mask, 0xff, SNDRV_MASK_SIZE * sizeof(u_int32_t));
	79	}
	80
9bb22e21	81	static inline int snd_mask_empty(const struct snd_mask *mask)
1da177e4 LT	82	{
	83	int i;
	84	for (i = 0; i < SNDRV_MASK_SIZE; i++)
	85	if (mask->bits[i])
	86	return 0;
	87	return 1;
	88	}
	89
9bb22e21	90	static inline unsigned int snd_mask_min(const struct snd_mask *mask)
1da177e4 LT	91	{
1da177e4 LT	92	int i;
1da177e4 LT	93	for (i = 0; i < SNDRV_MASK_SIZE; i++) {
	94	if (mask->bits[i])
	95	return ffs(mask->bits[i]) - 1 + (i << 5);
	96	}
	97	return 0;
	98	}
	99
9bb22e21	100	static inline unsigned int snd_mask_max(const struct snd_mask *mask)
1da177e4 LT	101	{
1da177e4 LT	102	int i;
1da177e4 LT	103	for (i = SNDRV_MASK_SIZE - 1; i >= 0; i--) {
	104	if (mask->bits[i])
	105	return ld2(mask->bits[i]) + (i << 5);
	106	}
	107	return 0;
	108	}
	109
9bb22e21	110	static inline void snd_mask_set(struct snd_mask *mask, unsigned int val)
1da177e4	111	{
1da177e4 LT	112	mask->bits[MASK_OFS(val)] \|= MASK_BIT(val);
	113	}
	114
9bb22e21	115	static inline void snd_mask_reset(struct snd_mask *mask, unsigned int val)
1da177e4	116	{
1da177e4 LT	117	mask->bits[MASK_OFS(val)] &= ~MASK_BIT(val);
	118	}
	119
9bb22e21 TI	120	static inline void snd_mask_set_range(struct snd_mask *mask,
9bb22e21 TI	121	unsigned int from, unsigned int to)
1da177e4 LT	122	{
1da177e4 LT	123	unsigned int i;
1da177e4 LT	124	for (i = from; i <= to; i++)
	125	mask->bits[MASK_OFS(i)] \|= MASK_BIT(i);
	126	}
	127
9bb22e21 TI	128	static inline void snd_mask_reset_range(struct snd_mask *mask,
9bb22e21 TI	129	unsigned int from, unsigned int to)
1da177e4 LT	130	{
1da177e4 LT	131	unsigned int i;
1da177e4 LT	132	for (i = from; i <= to; i++)
	133	mask->bits[MASK_OFS(i)] &= ~MASK_BIT(i);
	134	}
	135
9bb22e21	136	static inline void snd_mask_leave(struct snd_mask *mask, unsigned int val)
1da177e4 LT	137	{
1da177e4 LT	138	unsigned int v;
1da177e4 LT	139	v = mask->bits[MASK_OFS(val)] & MASK_BIT(val);
	140	snd_mask_none(mask);
	141	mask->bits[MASK_OFS(val)] = v;
	142	}
	143
9bb22e21 TI	144	static inline void snd_mask_intersect(struct snd_mask *mask,
9bb22e21 TI	145	const struct snd_mask *v)
1da177e4 LT	146	{
	147	int i;
	148	for (i = 0; i < SNDRV_MASK_SIZE; i++)
	149	mask->bits[i] &= v->bits[i];
	150	}
	151
9bb22e21 TI	152	static inline int snd_mask_eq(const struct snd_mask *mask,
9bb22e21 TI	153	const struct snd_mask *v)
1da177e4 LT	154	{
	155	return ! memcmp(mask, v, SNDRV_MASK_SIZE * sizeof(u_int32_t));
	156	}
	157
9bb22e21 TI	158	static inline void snd_mask_copy(struct snd_mask *mask,
9bb22e21 TI	159	const struct snd_mask *v)
1da177e4 LT	160	{
	161	mask = v;
	162	}
	163
9bb22e21	164	static inline int snd_mask_test(const struct snd_mask *mask, unsigned int val)
1da177e4	165	{
1da177e4 LT	166	return mask->bits[MASK_OFS(val)] & MASK_BIT(val);
	167	}
	168
9bb22e21	169	static inline int snd_mask_single(const struct snd_mask *mask)
1da177e4 LT	170	{
1da177e4 LT	171	int i, c = 0;
1da177e4 LT	172	for (i = 0; i < SNDRV_MASK_SIZE; i++) {
	173	if (! mask->bits[i])
	174	continue;
	175	if (mask->bits[i] & (mask->bits[i] - 1))
	176	return 0;
	177	if (c)
	178	return 0;
	179	c++;
	180	}
	181	return 1;
	182	}
	183
9bb22e21 TI	184	static inline int snd_mask_refine(struct snd_mask *mask,
9bb22e21 TI	185	const struct snd_mask *v)
1da177e4	186	{
877211f5	187	struct snd_mask old;
1da177e4 LT	188	snd_mask_copy(&old, mask);
	189	snd_mask_intersect(mask, v);
	190	if (snd_mask_empty(mask))
	191	return -EINVAL;
	192	return !snd_mask_eq(mask, &old);
	193	}
	194
9bb22e21	195	static inline int snd_mask_refine_first(struct snd_mask *mask)
1da177e4	196	{
1da177e4 LT	197	if (snd_mask_single(mask))
	198	return 0;
	199	snd_mask_leave(mask, snd_mask_min(mask));
	200	return 1;
	201	}
	202
9bb22e21	203	static inline int snd_mask_refine_last(struct snd_mask *mask)
1da177e4	204	{
1da177e4 LT	205	if (snd_mask_single(mask))
	206	return 0;
	207	snd_mask_leave(mask, snd_mask_max(mask));
	208	return 1;
	209	}
	210
9bb22e21	211	static inline int snd_mask_refine_min(struct snd_mask *mask, unsigned int val)
1da177e4	212	{
1da177e4 LT	213	if (snd_mask_min(mask) >= val)
	214	return 0;
	215	snd_mask_reset_range(mask, 0, val - 1);
	216	if (snd_mask_empty(mask))
	217	return -EINVAL;
	218	return 1;
	219	}
	220
9bb22e21	221	static inline int snd_mask_refine_max(struct snd_mask *mask, unsigned int val)
1da177e4	222	{
1da177e4 LT	223	if (snd_mask_max(mask) <= val)
	224	return 0;
	225	snd_mask_reset_range(mask, val + 1, SNDRV_MASK_BITS);
	226	if (snd_mask_empty(mask))
	227	return -EINVAL;
	228	return 1;
	229	}
	230
9bb22e21	231	static inline int snd_mask_refine_set(struct snd_mask *mask, unsigned int val)
1da177e4 LT	232	{
1da177e4 LT	233	int changed;
1da177e4 LT	234	changed = !snd_mask_single(mask);
	235	snd_mask_leave(mask, val);
	236	if (snd_mask_empty(mask))
	237	return -EINVAL;
	238	return changed;
	239	}
	240
9bb22e21	241	static inline int snd_mask_value(const struct snd_mask *mask)
1da177e4	242	{
1da177e4 LT	243	return snd_mask_min(mask);
	244	}
	245
9bb22e21	246	static inline void snd_interval_any(struct snd_interval *i)
1da177e4 LT	247	{
	248	i->min = 0;
	249	i->openmin = 0;
	250	i->max = UINT_MAX;
	251	i->openmax = 0;
	252	i->integer = 0;
	253	i->empty = 0;
	254	}
	255
9bb22e21	256	static inline void snd_interval_none(struct snd_interval *i)
1da177e4 LT	257	{
	258	i->empty = 1;
	259	}
	260
9bb22e21	261	static inline int snd_interval_checkempty(const struct snd_interval *i)
1da177e4 LT	262	{
	263	return (i->min > i->max \|\|
	264	(i->min == i->max && (i->openmin \|\| i->openmax)));
	265	}
	266
9bb22e21	267	static inline int snd_interval_empty(const struct snd_interval *i)
1da177e4 LT	268	{
	269	return i->empty;
	270	}
	271
9bb22e21	272	static inline int snd_interval_single(const struct snd_interval *i)
1da177e4	273	{
1da177e4 LT	274	return (i->min == i->max \|\|
	275	(i->min + 1 == i->max && i->openmax));
	276	}
	277
9bb22e21	278	static inline int snd_interval_value(const struct snd_interval *i)
1da177e4	279	{
1da177e4 LT	280	return i->min;
	281	}
	282
9bb22e21	283	static inline int snd_interval_min(const struct snd_interval *i)
1da177e4	284	{
1da177e4 LT	285	return i->min;
	286	}
	287
9bb22e21	288	static inline int snd_interval_max(const struct snd_interval *i)
1da177e4 LT	289	{
1da177e4 LT	290	unsigned int v;
1da177e4 LT	291	v = i->max;
	292	if (i->openmax)
	293	v--;
	294	return v;
	295	}
	296
9bb22e21	297	static inline int snd_interval_test(const struct snd_interval *i, unsigned int val)
1da177e4 LT	298	{
	299	return !((i->min > val \|\| (i->min == val && i->openmin) \|\|
	300	i->max < val \|\| (i->max == val && i->openmax)));
	301	}
	302
9bb22e21	303	static inline void snd_interval_copy(struct snd_interval d, const struct snd_interval s)
1da177e4 LT	304	{
	305	d = s;
	306	}
	307
9bb22e21	308	static inline int snd_interval_setinteger(struct snd_interval *i)
1da177e4 LT	309	{
	310	if (i->integer)
	311	return 0;
	312	if (i->openmin && i->openmax && i->min == i->max)
	313	return -EINVAL;
	314	i->integer = 1;
	315	return 1;
	316	}
	317
9bb22e21	318	static inline int snd_interval_eq(const struct snd_interval i1, const struct snd_interval i2)
1da177e4 LT	319	{
	320	if (i1->empty)
	321	return i2->empty;
	322	if (i2->empty)
	323	return i1->empty;
	324	return i1->min == i2->min && i1->openmin == i2->openmin &&
	325	i1->max == i2->max && i1->openmax == i2->openmax;
	326	}
	327
	328	static inline unsigned int add(unsigned int a, unsigned int b)
	329	{
	330	if (a >= UINT_MAX - b)
	331	return UINT_MAX;
	332	return a + b;
	333	}
	334
	335	static inline unsigned int sub(unsigned int a, unsigned int b)
	336	{
	337	if (a > b)
	338	return a - b;
	339	return 0;
	340	}
	341
b51beb75 TI	342	#define params_access(p) ((__force snd_pcm_access_t)\
	343	snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_ACCESS)))
	344	#define params_format(p) ((__force snd_pcm_format_t)\
	345	snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_FORMAT)))
	346	#define params_subformat(p) \
	347	snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_SUBFORMAT))
1da177e4	348
b51beb75 TI	349	static inline unsigned int
	350	params_period_bytes(const struct snd_pcm_hw_params *p)
	351	{
	352	return (params_period_size(p) *
	353	snd_pcm_format_physical_width(params_format(p)) *
	354	params_channels(p)) / 8;
	355	}
	356
	357	#endif /* __SOUND_PCM_PARAMS_H */