mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
![Takashi Iwai](/assets/img/avatar_default.png)
Move EXPORT_SYMBOL()s to places adjacent to functions/variables. Also move OSS-specific hw_params helper functions to pcm_oss.c. Signed-off-by: Takashi Iwai <tiwai@suse.de>
341 lines
7.7 KiB
C
341 lines
7.7 KiB
C
#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
|
|
*
|
|
*/
|
|
|
|
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;
|
|
}
|
|
|
|
#endif /* __SOUND_PCM_PARAMS_H */
|
|
|