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[ALSA] Move OSS-specific hw_params helper to snd-pcm-oss module 

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>
hifive-unleashed-5.1
Takashi Iwai 2006-04-28 15:13:40 +02:00 committed by Jaroslav Kysela
parent e5e8a1d461
commit e88e8ae639
8 changed files with 605 additions and 646 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
include/sound/pcm.h
View File

@ -825,14 +825,6 @@ int snd_interval_ratnum(struct snd_interval *i,
void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params);
void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var);
int snd_pcm_hw_param_near(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var,
unsigned int val, int *dir);
int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var,
unsigned int val, int dir);
int snd_pcm_hw_params_choose(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params);
int snd_pcm_hw_refine(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params);

20
include/sound/pcm_params.h
View File

@ -22,18 +22,14 @@
*
*/
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);
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)

481
sound/core/oss/pcm_oss.c
View File

@ -78,6 +78,487 @@ static inline void snd_leave_user(mm_segment_t fs)
set_fs(fs);
}
/*
* helper functions to process hw_params
*/
static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin)
{
int changed = 0;
if (i->min < min) {
i->min = min;
i->openmin = openmin;
changed = 1;
} else if (i->min == min && !i->openmin && openmin) {
i->openmin = 1;
changed = 1;
}
if (i->integer) {
if (i->openmin) {
i->min++;
i->openmin = 0;
}
}
if (snd_interval_checkempty(i)) {
snd_interval_none(i);
return -EINVAL;
}
return changed;
}
static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax)
{
int changed = 0;
if (i->max > max) {
i->max = max;
i->openmax = openmax;
changed = 1;
} else if (i->max == max && !i->openmax && openmax) {
i->openmax = 1;
changed = 1;
}
if (i->integer) {
if (i->openmax) {
i->max--;
i->openmax = 0;
}
}
if (snd_interval_checkempty(i)) {
snd_interval_none(i);
return -EINVAL;
}
return changed;
}
static int snd_interval_refine_set(struct snd_interval *i, unsigned int val)
{
struct snd_interval t;
t.empty = 0;
t.min = t.max = val;
t.openmin = t.openmax = 0;
t.integer = 1;
return snd_interval_refine(i, &t);
}
/**
* snd_pcm_hw_param_value_min
* @params: the hw_params instance
* @var: parameter to retrieve
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Return the minimum value for field PAR.
*/
static unsigned int
snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, int *dir)
{
if (hw_is_mask(var)) {
if (dir)
*dir = 0;
return snd_mask_min(hw_param_mask_c(params, var));
}
if (hw_is_interval(var)) {
const struct snd_interval *i = hw_param_interval_c(params, var);
if (dir)
*dir = i->openmin;
return snd_interval_min(i);
}
return -EINVAL;
}
/**
* snd_pcm_hw_param_value_max
* @params: the hw_params instance
* @var: parameter to retrieve
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Return the maximum value for field PAR.
*/
static unsigned int
snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, int *dir)
{
if (hw_is_mask(var)) {
if (dir)
*dir = 0;
return snd_mask_max(hw_param_mask_c(params, var));
}
if (hw_is_interval(var)) {
const struct snd_interval *i = hw_param_interval_c(params, var);
if (dir)
*dir = - (int) i->openmax;
return snd_interval_max(i);
}
return -EINVAL;
}
static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var,
const struct snd_mask *val)
{
int changed;
changed = snd_mask_refine(hw_param_mask(params, var), val);
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
static 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)
{
int changed = _snd_pcm_hw_param_mask(params, var, val);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return 0;
}
static int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int dir)
{
int changed;
int open = 0;
if (dir) {
if (dir > 0) {
open = 1;
} else if (dir < 0) {
if (val > 0) {
open = 1;
val--;
}
}
}
if (hw_is_mask(var))
changed = snd_mask_refine_min(hw_param_mask(params, var),
val + !!open);
else if (hw_is_interval(var))
changed = snd_interval_refine_min(hw_param_interval(params, var),
val, open);
else
return -EINVAL;
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
/**
* snd_pcm_hw_param_min
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @val: minimal value
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Inside configuration space defined by PARAMS remove from PAR all
* values < VAL. Reduce configuration space accordingly.
* Return new minimum or -EINVAL if the configuration space is empty
*/
static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int *dir)
{
int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return snd_pcm_hw_param_value_min(params, var, dir);
}
static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int dir)
{
int changed;
int open = 0;
if (dir) {
if (dir < 0) {
open = 1;
} else if (dir > 0) {
open = 1;
val++;
}
}
if (hw_is_mask(var)) {
if (val == 0 && open) {
snd_mask_none(hw_param_mask(params, var));
changed = -EINVAL;
} else
changed = snd_mask_refine_max(hw_param_mask(params, var),
val - !!open);
} else if (hw_is_interval(var))
changed = snd_interval_refine_max(hw_param_interval(params, var),
val, open);
else
return -EINVAL;
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
/**
* snd_pcm_hw_param_max
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @val: maximal value
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Inside configuration space defined by PARAMS remove from PAR all
* values >= VAL + 1. Reduce configuration space accordingly.
* Return new maximum or -EINVAL if the configuration space is empty
*/
static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int *dir)
{
int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return snd_pcm_hw_param_value_max(params, var, dir);
}
static int boundary_sub(int a, int adir,
int b, int bdir,
int *c, int *cdir)
{
adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0);
bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0);
*c = a - b;
*cdir = adir - bdir;
if (*cdir == -2) {
(*c)--;
} else if (*cdir == 2) {
(*c)++;
}
return 0;
}
static int boundary_lt(unsigned int a, int adir,
unsigned int b, int bdir)
{
if (adir < 0) {
a--;
adir = 1;
} else if (adir > 0)
adir = 1;
if (bdir < 0) {
b--;
bdir = 1;
} else if (bdir > 0)
bdir = 1;
return a < b || (a == b && adir < bdir);
}
/* Return 1 if min is nearer to best than max */
static int boundary_nearer(int min, int mindir,
int best, int bestdir,
int max, int maxdir)
{
int dmin, dmindir;
int dmax, dmaxdir;
boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir);
boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir);
return boundary_lt(dmin, dmindir, dmax, dmaxdir);
}
/**
* snd_pcm_hw_param_near
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @best: value to set
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Inside configuration space defined by PARAMS set PAR to the available value
* nearest to VAL. Reduce configuration space accordingly.
* This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS,
* SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT.
* Return the value found.
*/
static int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int best,
int *dir)
{
struct snd_pcm_hw_params *save = NULL;
int v;
unsigned int saved_min;
int last = 0;
int min, max;
int mindir, maxdir;
int valdir = dir ? *dir : 0;
/* FIXME */
if (best > INT_MAX)
best = INT_MAX;
min = max = best;
mindir = maxdir = valdir;
if (maxdir > 0)
maxdir = 0;
else if (maxdir == 0)
maxdir = -1;
else {
maxdir = 1;
max--;
}
save = kmalloc(sizeof(*save), GFP_KERNEL);
if (save == NULL)
return -ENOMEM;
*save = *params;
saved_min = min;
min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir);
if (min >= 0) {
struct snd_pcm_hw_params *params1;
if (max < 0)
goto _end;
if ((unsigned int)min == saved_min && mindir == valdir)
goto _end;
params1 = kmalloc(sizeof(*params1), GFP_KERNEL);
if (params1 == NULL) {
kfree(save);
return -ENOMEM;
}
*params1 = *save;
max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir);
if (max < 0) {
kfree(params1);
goto _end;
}
if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) {
*params = *params1;
last = 1;
}
kfree(params1);
} else {
*params = *save;
max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir);
snd_assert(max >= 0, return -EINVAL);
last = 1;
}
_end:
kfree(save);
if (last)
v = snd_pcm_hw_param_last(pcm, params, var, dir);
else
v = snd_pcm_hw_param_first(pcm, params, var, dir);
snd_assert(v >= 0, return -EINVAL);
return v;
}
static int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int dir)
{
int changed;
if (hw_is_mask(var)) {
struct snd_mask *m = hw_param_mask(params, var);
if (val == 0 && dir < 0) {
changed = -EINVAL;
snd_mask_none(m);
} else {
if (dir > 0)
val++;
else if (dir < 0)
val--;
changed = snd_mask_refine_set(hw_param_mask(params, var), val);
}
} else if (hw_is_interval(var)) {
struct snd_interval *i = hw_param_interval(params, var);
if (val == 0 && dir < 0) {
changed = -EINVAL;
snd_interval_none(i);
} else if (dir == 0)
changed = snd_interval_refine_set(i, val);
else {
struct snd_interval t;
t.openmin = 1;
t.openmax = 1;
t.empty = 0;
t.integer = 0;
if (dir < 0) {
t.min = val - 1;
t.max = val;
} else {
t.min = val;
t.max = val+1;
}
changed = snd_interval_refine(i, &t);
}
} else
return -EINVAL;
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
/**
* snd_pcm_hw_param_set
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @val: value to set
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Inside configuration space defined by PARAMS remove from PAR all
* values != VAL. Reduce configuration space accordingly.
* Return VAL or -EINVAL if the configuration space is empty
*/
static int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int dir)
{
int changed = _snd_pcm_hw_param_set(params, var, val, dir);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return snd_pcm_hw_param_value(params, var, NULL);
}
static int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
int changed;
changed = snd_interval_setinteger(hw_param_interval(params, var));
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
/*
* plugin
*/
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream)
{

36
sound/core/pcm.c
View File

@ -671,6 +671,8 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count)
return 0;
}
EXPORT_SYMBOL(snd_pcm_new_stream);
/**
* snd_pcm_new - create a new PCM instance
* @card: the card instance
@ -730,6 +732,8 @@ int snd_pcm_new(struct snd_card *card, char *id, int device,
return 0;
}
EXPORT_SYMBOL(snd_pcm_new);
static void snd_pcm_free_stream(struct snd_pcm_str * pstr)
{
struct snd_pcm_substream *substream, *substream_next;
@ -1022,6 +1026,8 @@ int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree)
return 0;
}
EXPORT_SYMBOL(snd_pcm_notify);
#ifdef CONFIG_PROC_FS
/*
* Info interface
@ -1099,33 +1105,3 @@ static void __exit alsa_pcm_exit(void)
module_init(alsa_pcm_init)
module_exit(alsa_pcm_exit)
EXPORT_SYMBOL(snd_pcm_new);
EXPORT_SYMBOL(snd_pcm_new_stream);
EXPORT_SYMBOL(snd_pcm_notify);
EXPORT_SYMBOL(snd_pcm_open_substream);
EXPORT_SYMBOL(snd_pcm_release_substream);
/* pcm_native.c */
EXPORT_SYMBOL(snd_pcm_link_rwlock);
#ifdef CONFIG_PM
EXPORT_SYMBOL(snd_pcm_suspend);
EXPORT_SYMBOL(snd_pcm_suspend_all);
#endif
EXPORT_SYMBOL(snd_pcm_kernel_ioctl);
EXPORT_SYMBOL(snd_pcm_mmap_data);
#if SNDRV_PCM_INFO_MMAP_IOMEM
EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem);
#endif
/* pcm_misc.c */
EXPORT_SYMBOL(snd_pcm_format_signed);
EXPORT_SYMBOL(snd_pcm_format_unsigned);
EXPORT_SYMBOL(snd_pcm_format_linear);
EXPORT_SYMBOL(snd_pcm_format_little_endian);
EXPORT_SYMBOL(snd_pcm_format_big_endian);
EXPORT_SYMBOL(snd_pcm_format_width);
EXPORT_SYMBOL(snd_pcm_format_physical_width);
EXPORT_SYMBOL(snd_pcm_format_size);
EXPORT_SYMBOL(snd_pcm_format_silence_64);
EXPORT_SYMBOL(snd_pcm_format_set_silence);
EXPORT_SYMBOL(snd_pcm_build_linear_format);
EXPORT_SYMBOL(snd_pcm_limit_hw_rates);

649
sound/core/pcm_lib.c
View File

@ -289,6 +289,7 @@ void snd_pcm_set_ops(struct snd_pcm *pcm, int direction, struct snd_pcm_ops *ops
substream->ops = ops;
}
EXPORT_SYMBOL(snd_pcm_set_ops);
/**
* snd_pcm_sync - set the PCM sync id
@ -306,13 +307,12 @@ void snd_pcm_set_sync(struct snd_pcm_substream *substream)
runtime->sync.id32[3] = -1;
}
EXPORT_SYMBOL(snd_pcm_set_sync);
/*
* Standard ioctl routine
*/
/* Code taken from alsa-lib */
#define assert(a) snd_assert((a), return -EINVAL)
static inline unsigned int div32(unsigned int a, unsigned int b,
unsigned int *r)
{
@ -369,56 +369,6 @@ static inline unsigned int muldiv32(unsigned int a, unsigned int b,
return n;
}
static int snd_interval_refine_min(struct snd_interval *i, unsigned int min, int openmin)
{
int changed = 0;
assert(!snd_interval_empty(i));
if (i->min < min) {
i->min = min;
i->openmin = openmin;
changed = 1;
} else if (i->min == min && !i->openmin && openmin) {
i->openmin = 1;
changed = 1;
}
if (i->integer) {
if (i->openmin) {
i->min++;
i->openmin = 0;
}
}
if (snd_interval_checkempty(i)) {
snd_interval_none(i);
return -EINVAL;
}
return changed;
}
static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int openmax)
{
int changed = 0;
assert(!snd_interval_empty(i));
if (i->max > max) {
i->max = max;
i->openmax = openmax;
changed = 1;
} else if (i->max == max && !i->openmax && openmax) {
i->openmax = 1;
changed = 1;
}
if (i->integer) {
if (i->openmax) {
i->max--;
i->openmax = 0;
}
}
if (snd_interval_checkempty(i)) {
snd_interval_none(i);
return -EINVAL;
}
return changed;
}
/**
* snd_interval_refine - refine the interval value of configurator
* @i: the interval value to refine
@ -433,7 +383,7 @@ static int snd_interval_refine_max(struct snd_interval *i, unsigned int max, int
int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v)
{
int changed = 0;
assert(!snd_interval_empty(i));
snd_assert(!snd_interval_empty(i), return -EINVAL);
if (i->min < v->min) {
i->min = v->min;
i->openmin = v->openmin;
@ -472,9 +422,11 @@ int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v)
return changed;
}
EXPORT_SYMBOL(snd_interval_refine);
static int snd_interval_refine_first(struct snd_interval *i)
{
assert(!snd_interval_empty(i));
snd_assert(!snd_interval_empty(i), return -EINVAL);
if (snd_interval_single(i))
return 0;
i->max = i->min;
@ -486,7 +438,7 @@ static int snd_interval_refine_first(struct snd_interval *i)
static int snd_interval_refine_last(struct snd_interval *i)
{
assert(!snd_interval_empty(i));
snd_assert(!snd_interval_empty(i), return -EINVAL);
if (snd_interval_single(i))
return 0;
i->min = i->max;
@ -496,16 +448,6 @@ static int snd_interval_refine_last(struct snd_interval *i)
return 1;
}
static int snd_interval_refine_set(struct snd_interval *i, unsigned int val)
{
struct snd_interval t;
t.empty = 0;
t.min = t.max = val;
t.openmin = t.openmax = 0;
t.integer = 1;
return snd_interval_refine(i, &t);
}
void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c)
{
if (a->empty || b->empty) {
@ -621,7 +563,6 @@ void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k,
c->integer = 0;
}
#undef assert
/* ---- */
@ -727,6 +668,8 @@ int snd_interval_ratnum(struct snd_interval *i,
return err;
}
EXPORT_SYMBOL(snd_interval_ratnum);
/**
* snd_interval_ratden - refine the interval value
* @i: interval to refine
@ -877,6 +820,8 @@ int snd_interval_list(struct snd_interval *i, unsigned int count, unsigned int *
return changed;
}
EXPORT_SYMBOL(snd_interval_list);
static int snd_interval_step(struct snd_interval *i, unsigned int min, unsigned int step)
{
unsigned int n;
@ -953,6 +898,8 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond,
return 0;
}
EXPORT_SYMBOL(snd_pcm_hw_rule_add);
/**
* snd_pcm_hw_constraint_mask
* @runtime: PCM runtime instance
@ -1007,6 +954,8 @@ int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_pa
return snd_interval_setinteger(constrs_interval(constrs, var));
}
EXPORT_SYMBOL(snd_pcm_hw_constraint_integer);
/**
* snd_pcm_hw_constraint_minmax
* @runtime: PCM runtime instance
@ -1028,6 +977,8 @@ int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_par
return snd_interval_refine(constrs_interval(constrs, var), &t);
}
EXPORT_SYMBOL(snd_pcm_hw_constraint_minmax);
static int snd_pcm_hw_rule_list(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
@ -1055,6 +1006,8 @@ int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime,
var, -1);
}
EXPORT_SYMBOL(snd_pcm_hw_constraint_list);
static int snd_pcm_hw_rule_ratnums(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
@ -1087,6 +1040,8 @@ int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime,
var, -1);
}
EXPORT_SYMBOL(snd_pcm_hw_constraint_ratnums);
static int snd_pcm_hw_rule_ratdens(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
@ -1118,6 +1073,8 @@ int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime,
var, -1);
}
EXPORT_SYMBOL(snd_pcm_hw_constraint_ratdens);
static int snd_pcm_hw_rule_msbits(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
@ -1149,6 +1106,8 @@ int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime,
SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1);
}
EXPORT_SYMBOL(snd_pcm_hw_constraint_msbits);
static int snd_pcm_hw_rule_step(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
@ -1173,6 +1132,8 @@ int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime,
var, -1);
}
EXPORT_SYMBOL(snd_pcm_hw_constraint_step);
static int snd_pcm_hw_rule_pow2(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule)
{
static int pow2_sizes[] = {
@ -1200,6 +1161,8 @@ int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime,
var, -1);
}
EXPORT_SYMBOL(snd_pcm_hw_constraint_pow2);
/* To use the same code we have in alsa-lib */
#define assert(i) snd_assert((i), return -EINVAL)
#ifndef INT_MIN
@ -1224,18 +1187,6 @@ static void _snd_pcm_hw_param_any(struct snd_pcm_hw_params *params,
snd_BUG();
}
#if 0
/*
* snd_pcm_hw_param_any
*/
int snd_pcm_hw_param_any(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
_snd_pcm_hw_param_any(params, var);
return snd_pcm_hw_refine(pcm, params);
}
#endif /* 0 */
void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params)
{
unsigned int k;
@ -1247,18 +1198,7 @@ void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params)
params->info = ~0U;
}
#if 0
/*
* snd_pcm_hw_params_any
*
* Fill PARAMS with full configuration space boundaries
*/
int snd_pcm_hw_params_any(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params)
{
_snd_pcm_hw_params_any(params);
return snd_pcm_hw_refine(pcm, params);
}
#endif /* 0 */
EXPORT_SYMBOL(_snd_pcm_hw_params_any);
/**
* snd_pcm_hw_param_value
@ -1269,8 +1209,8 @@ int snd_pcm_hw_params_any(struct snd_pcm_substream *pcm, struct snd_pcm_hw_param
* Return the value for field PAR if it's fixed in configuration space
* defined by PARAMS. Return -EINVAL otherwise
*/
static int snd_pcm_hw_param_value(const 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)
{
if (hw_is_mask(var)) {
const struct snd_mask *mask = hw_param_mask_c(params, var);
@ -1292,57 +1232,7 @@ static int snd_pcm_hw_param_value(const struct snd_pcm_hw_params *params,
return -EINVAL;
}
/**
* snd_pcm_hw_param_value_min
* @params: the hw_params instance
* @var: parameter to retrieve
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Return the minimum value for field PAR.
*/
unsigned int snd_pcm_hw_param_value_min(const struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, int *dir)
{
if (hw_is_mask(var)) {
if (dir)
*dir = 0;
return snd_mask_min(hw_param_mask_c(params, var));
}
if (hw_is_interval(var)) {
const struct snd_interval *i = hw_param_interval_c(params, var);
if (dir)
*dir = i->openmin;
return snd_interval_min(i);
}
assert(0);
return -EINVAL;
}
/**
* snd_pcm_hw_param_value_max
* @params: the hw_params instance
* @var: parameter to retrieve
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Return the maximum value for field PAR.
*/
unsigned int snd_pcm_hw_param_value_max(const struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, int *dir)
{
if (hw_is_mask(var)) {
if (dir)
*dir = 0;
return snd_mask_max(hw_param_mask_c(params, var));
}
if (hw_is_interval(var)) {
const struct snd_interval *i = hw_param_interval_c(params, var);
if (dir)
*dir = - (int) i->openmax;
return snd_interval_max(i);
}
assert(0);
return -EINVAL;
}
EXPORT_SYMBOL(snd_pcm_hw_param_value);
void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
@ -1360,42 +1250,7 @@ void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params,
}
}
int _snd_pcm_hw_param_setinteger(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
int changed;
assert(hw_is_interval(var));
changed = snd_interval_setinteger(hw_param_interval(params, var));
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
#if 0
/*
* snd_pcm_hw_param_setinteger
*
* Inside configuration space defined by PARAMS remove from PAR all
* non integer values. Reduce configuration space accordingly.
* Return -EINVAL if the configuration space is empty
*/
int snd_pcm_hw_param_setinteger(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
int changed = _snd_pcm_hw_param_setinteger(params, var);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return 0;
}
#endif /* 0 */
EXPORT_SYMBOL(_snd_pcm_hw_param_setempty);
static int _snd_pcm_hw_param_first(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
@ -1428,9 +1283,9 @@ static int _snd_pcm_hw_param_first(struct snd_pcm_hw_params *params,
* values > minimum. Reduce configuration space accordingly.
* Return the minimum.
*/
static 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_first(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, int *dir)
{
int changed = _snd_pcm_hw_param_first(params, var);
if (changed < 0)
@ -1442,6 +1297,8 @@ static int snd_pcm_hw_param_first(struct snd_pcm_substream *pcm,
return snd_pcm_hw_param_value(params, var, dir);
}
EXPORT_SYMBOL(snd_pcm_hw_param_first);
static int _snd_pcm_hw_param_last(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
@ -1473,9 +1330,9 @@ static int _snd_pcm_hw_param_last(struct snd_pcm_hw_params *params,
* values < maximum. Reduce configuration space accordingly.
* Return the maximum.
*/
static 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_last(struct snd_pcm_substream *pcm,
struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, int *dir)
{
int changed = _snd_pcm_hw_param_last(params, var);
if (changed < 0)
@ -1487,367 +1344,7 @@ static int snd_pcm_hw_param_last(struct snd_pcm_substream *pcm,
return snd_pcm_hw_param_value(params, var, dir);
}
int _snd_pcm_hw_param_min(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val, int dir)
{
int changed;
int open = 0;
if (dir) {
if (dir > 0) {
open = 1;
} else if (dir < 0) {
if (val > 0) {
open = 1;
val--;
}
}
}
if (hw_is_mask(var))
changed = snd_mask_refine_min(hw_param_mask(params, var), val + !!open);
else if (hw_is_interval(var))
changed = snd_interval_refine_min(hw_param_interval(params, var), val, open);
else {
assert(0);
return -EINVAL;
}
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
/**
* snd_pcm_hw_param_min
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @val: minimal value
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Inside configuration space defined by PARAMS remove from PAR all
* values < VAL. Reduce configuration space accordingly.
* Return new minimum or -EINVAL if the configuration space is empty
*/
static int snd_pcm_hw_param_min(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int *dir)
{
int changed = _snd_pcm_hw_param_min(params, var, val, dir ? *dir : 0);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return snd_pcm_hw_param_value_min(params, var, dir);
}
static int _snd_pcm_hw_param_max(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int dir)
{
int changed;
int open = 0;
if (dir) {
if (dir < 0) {
open = 1;
} else if (dir > 0) {
open = 1;
val++;
}
}
if (hw_is_mask(var)) {
if (val == 0 && open) {
snd_mask_none(hw_param_mask(params, var));
changed = -EINVAL;
} else
changed = snd_mask_refine_max(hw_param_mask(params, var), val - !!open);
} else if (hw_is_interval(var))
changed = snd_interval_refine_max(hw_param_interval(params, var), val, open);
else {
assert(0);
return -EINVAL;
}
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
/**
* snd_pcm_hw_param_max
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @val: maximal value
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Inside configuration space defined by PARAMS remove from PAR all
* values >= VAL + 1. Reduce configuration space accordingly.
* Return new maximum or -EINVAL if the configuration space is empty
*/
static int snd_pcm_hw_param_max(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val,
int *dir)
{
int changed = _snd_pcm_hw_param_max(params, var, val, dir ? *dir : 0);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return snd_pcm_hw_param_value_max(params, var, dir);
}
int _snd_pcm_hw_param_set(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val, int dir)
{
int changed;
if (hw_is_mask(var)) {
struct snd_mask *m = hw_param_mask(params, var);
if (val == 0 && dir < 0) {
changed = -EINVAL;
snd_mask_none(m);
} else {
if (dir > 0)
val++;
else if (dir < 0)
val--;
changed = snd_mask_refine_set(hw_param_mask(params, var), val);
}
} else if (hw_is_interval(var)) {
struct snd_interval *i = hw_param_interval(params, var);
if (val == 0 && dir < 0) {
changed = -EINVAL;
snd_interval_none(i);
} else if (dir == 0)
changed = snd_interval_refine_set(i, val);
else {
struct snd_interval t;
t.openmin = 1;
t.openmax = 1;
t.empty = 0;
t.integer = 0;
if (dir < 0) {
t.min = val - 1;
t.max = val;
} else {
t.min = val;
t.max = val+1;
}
changed = snd_interval_refine(i, &t);
}
} else {
assert(0);
return -EINVAL;
}
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
/**
* snd_pcm_hw_param_set
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @val: value to set
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Inside configuration space defined by PARAMS remove from PAR all
* values != VAL. Reduce configuration space accordingly.
* Return VAL or -EINVAL if the configuration space is empty
*/
int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int val, int dir)
{
int changed = _snd_pcm_hw_param_set(params, var, val, dir);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return snd_pcm_hw_param_value(params, var, NULL);
}
static int _snd_pcm_hw_param_mask(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, const struct snd_mask *val)
{
int changed;
assert(hw_is_mask(var));
changed = snd_mask_refine(hw_param_mask(params, var), val);
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
}
return changed;
}
/**
* snd_pcm_hw_param_mask
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @val: mask to apply
*
* Inside configuration space defined by PARAMS remove from PAR all values
* not contained in MASK. Reduce configuration space accordingly.
* This function can be called only for SNDRV_PCM_HW_PARAM_ACCESS,
* SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT.
* Return 0 on success or -EINVAL
* if the configuration space is empty
*/
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)
{
int changed = _snd_pcm_hw_param_mask(params, var, val);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
if (err < 0)
return err;
}
return 0;
}
static int boundary_sub(int a, int adir,
int b, int bdir,
int *c, int *cdir)
{
adir = adir < 0 ? -1 : (adir > 0 ? 1 : 0);
bdir = bdir < 0 ? -1 : (bdir > 0 ? 1 : 0);
*c = a - b;
*cdir = adir - bdir;
if (*cdir == -2) {
assert(*c > INT_MIN);
(*c)--;
} else if (*cdir == 2) {
assert(*c < INT_MAX);
(*c)++;
}
return 0;
}
static int boundary_lt(unsigned int a, int adir,
unsigned int b, int bdir)
{
assert(a > 0 || adir >= 0);
assert(b > 0 || bdir >= 0);
if (adir < 0) {
a--;
adir = 1;
} else if (adir > 0)
adir = 1;
if (bdir < 0) {
b--;
bdir = 1;
} else if (bdir > 0)
bdir = 1;
return a < b || (a == b && adir < bdir);
}
/* Return 1 if min is nearer to best than max */
static int boundary_nearer(int min, int mindir,
int best, int bestdir,
int max, int maxdir)
{
int dmin, dmindir;
int dmax, dmaxdir;
boundary_sub(best, bestdir, min, mindir, &dmin, &dmindir);
boundary_sub(max, maxdir, best, bestdir, &dmax, &dmaxdir);
return boundary_lt(dmin, dmindir, dmax, dmaxdir);
}
/**
* snd_pcm_hw_param_near
* @pcm: PCM instance
* @params: the hw_params instance
* @var: parameter to retrieve
* @best: value to set
* @dir: pointer to the direction (-1,0,1) or NULL
*
* Inside configuration space defined by PARAMS set PAR to the available value
* nearest to VAL. Reduce configuration space accordingly.
* This function cannot be called for SNDRV_PCM_HW_PARAM_ACCESS,
* SNDRV_PCM_HW_PARAM_FORMAT, SNDRV_PCM_HW_PARAM_SUBFORMAT.
* Return the value found.
*/
int snd_pcm_hw_param_near(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var, unsigned int best, int *dir)
{
struct snd_pcm_hw_params *save = NULL;
int v;
unsigned int saved_min;
int last = 0;
int min, max;
int mindir, maxdir;
int valdir = dir ? *dir : 0;
/* FIXME */
if (best > INT_MAX)
best = INT_MAX;
min = max = best;
mindir = maxdir = valdir;
if (maxdir > 0)
maxdir = 0;
else if (maxdir == 0)
maxdir = -1;
else {
maxdir = 1;
max--;
}
save = kmalloc(sizeof(*save), GFP_KERNEL);
if (save == NULL)
return -ENOMEM;
*save = *params;
saved_min = min;
min = snd_pcm_hw_param_min(pcm, params, var, min, &mindir);
if (min >= 0) {
struct snd_pcm_hw_params *params1;
if (max < 0)
goto _end;
if ((unsigned int)min == saved_min && mindir == valdir)
goto _end;
params1 = kmalloc(sizeof(*params1), GFP_KERNEL);
if (params1 == NULL) {
kfree(save);
return -ENOMEM;
}
*params1 = *save;
max = snd_pcm_hw_param_max(pcm, params1, var, max, &maxdir);
if (max < 0) {
kfree(params1);
goto _end;
}
if (boundary_nearer(max, maxdir, best, valdir, min, mindir)) {
*params = *params1;
last = 1;
}
kfree(params1);
} else {
*params = *save;
max = snd_pcm_hw_param_max(pcm, params, var, max, &maxdir);
assert(max >= 0);
last = 1;
}
_end:
kfree(save);
if (last)
v = snd_pcm_hw_param_last(pcm, params, var, dir);
else
v = snd_pcm_hw_param_first(pcm, params, var, dir);
assert(v >= 0);
return v;
}
EXPORT_SYMBOL(snd_pcm_hw_param_last);
/**
* snd_pcm_hw_param_choose
@ -1967,6 +1464,8 @@ int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream,
return -ENXIO;
}
EXPORT_SYMBOL(snd_pcm_lib_ioctl);
/*
* Conditions
*/
@ -2101,6 +1600,8 @@ void snd_pcm_period_elapsed(struct snd_pcm_substream *substream)
kill_fasync(&runtime->fasync, SIGIO, POLL_IN);
}
EXPORT_SYMBOL(snd_pcm_period_elapsed);
static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
unsigned long data, unsigned int off,
@ -2308,6 +1809,8 @@ snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const v
snd_pcm_lib_write_transfer);
}
EXPORT_SYMBOL(snd_pcm_lib_write);
static int snd_pcm_lib_writev_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
unsigned long data, unsigned int off,
@ -2370,6 +1873,8 @@ snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream,
nonblock, snd_pcm_lib_writev_transfer);
}
EXPORT_SYMBOL(snd_pcm_lib_writev);
static int snd_pcm_lib_read_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
unsigned long data, unsigned int off,
@ -2578,6 +2083,8 @@ snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, void __u
return snd_pcm_lib_read1(substream, (unsigned long)buf, size, nonblock, snd_pcm_lib_read_transfer);
}
EXPORT_SYMBOL(snd_pcm_lib_read);
static int snd_pcm_lib_readv_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
unsigned long data, unsigned int off,
@ -2635,52 +2142,4 @@ snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream,
return snd_pcm_lib_read1(substream, (unsigned long)bufs, frames, nonblock, snd_pcm_lib_readv_transfer);
}
/*
* Exported symbols
*/
EXPORT_SYMBOL(snd_interval_refine);
EXPORT_SYMBOL(snd_interval_list);
EXPORT_SYMBOL(snd_interval_ratnum);
EXPORT_SYMBOL(_snd_pcm_hw_params_any);
EXPORT_SYMBOL(_snd_pcm_hw_param_min);
EXPORT_SYMBOL(_snd_pcm_hw_param_set);
EXPORT_SYMBOL(_snd_pcm_hw_param_setempty);
EXPORT_SYMBOL(_snd_pcm_hw_param_setinteger);
EXPORT_SYMBOL(snd_pcm_hw_param_value_min);
EXPORT_SYMBOL(snd_pcm_hw_param_value_max);
EXPORT_SYMBOL(snd_pcm_hw_param_mask);
EXPORT_SYMBOL(snd_pcm_hw_param_first);
EXPORT_SYMBOL(snd_pcm_hw_param_last);
EXPORT_SYMBOL(snd_pcm_hw_param_near);
EXPORT_SYMBOL(snd_pcm_hw_param_set);
EXPORT_SYMBOL(snd_pcm_hw_refine);
EXPORT_SYMBOL(snd_pcm_hw_constraints_init);
EXPORT_SYMBOL(snd_pcm_hw_constraints_complete);
EXPORT_SYMBOL(snd_pcm_hw_constraint_list);
EXPORT_SYMBOL(snd_pcm_hw_constraint_step);
EXPORT_SYMBOL(snd_pcm_hw_constraint_ratnums);
EXPORT_SYMBOL(snd_pcm_hw_constraint_ratdens);
EXPORT_SYMBOL(snd_pcm_hw_constraint_msbits);
EXPORT_SYMBOL(snd_pcm_hw_constraint_minmax);
EXPORT_SYMBOL(snd_pcm_hw_constraint_integer);
EXPORT_SYMBOL(snd_pcm_hw_constraint_pow2);
EXPORT_SYMBOL(snd_pcm_hw_rule_add);
EXPORT_SYMBOL(snd_pcm_set_ops);
EXPORT_SYMBOL(snd_pcm_set_sync);
EXPORT_SYMBOL(snd_pcm_lib_ioctl);
EXPORT_SYMBOL(snd_pcm_stop);
EXPORT_SYMBOL(snd_pcm_period_elapsed);
EXPORT_SYMBOL(snd_pcm_lib_write);
EXPORT_SYMBOL(snd_pcm_lib_read);
EXPORT_SYMBOL(snd_pcm_lib_writev);
EXPORT_SYMBOL(snd_pcm_lib_readv);
EXPORT_SYMBOL(snd_pcm_lib_buffer_bytes);
EXPORT_SYMBOL(snd_pcm_lib_period_bytes);
/* pcm_memory.c */
EXPORT_SYMBOL(snd_pcm_lib_preallocate_free_for_all);
EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages);
EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages_for_all);
EXPORT_SYMBOL(snd_pcm_sgbuf_ops_page);
EXPORT_SYMBOL(snd_pcm_lib_malloc_pages);
EXPORT_SYMBOL(snd_pcm_lib_free_pages);

12
sound/core/pcm_memory.c
View File

@ -126,6 +126,8 @@ int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm)
return 0;
}
EXPORT_SYMBOL(snd_pcm_lib_preallocate_free_for_all);
#ifdef CONFIG_SND_VERBOSE_PROCFS
/*
* read callback for prealloc proc file
@ -253,6 +255,8 @@ int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream,
return snd_pcm_lib_preallocate_pages1(substream, size, max);
}
EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages);
/**
* snd_pcm_lib_preallocate_pages_for_all - pre-allocation for continous memory type (all substreams)
* @pcm: the pcm instance
@ -280,6 +284,8 @@ int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm,
return 0;
}
EXPORT_SYMBOL(snd_pcm_lib_preallocate_pages_for_all);
/**
* snd_pcm_sgbuf_ops_page - get the page struct at the given offset
* @substream: the pcm substream instance
@ -298,6 +304,8 @@ struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigne
return sgbuf->page_table[idx];
}
EXPORT_SYMBOL(snd_pcm_sgbuf_ops_page);
/**
* snd_pcm_lib_malloc_pages - allocate the DMA buffer
* @substream: the substream to allocate the DMA buffer to
@ -349,6 +357,8 @@ int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size)
return 1; /* area was changed */
}
EXPORT_SYMBOL(snd_pcm_lib_malloc_pages);
/**
* snd_pcm_lib_free_pages - release the allocated DMA buffer.
* @substream: the substream to release the DMA buffer
@ -374,3 +384,5 @@ int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream)
snd_pcm_set_runtime_buffer(substream, NULL);
return 0;
}
EXPORT_SYMBOL(snd_pcm_lib_free_pages);

24
sound/core/pcm_misc.c
View File

@ -207,6 +207,8 @@ int snd_pcm_format_signed(snd_pcm_format_t format)
return val;
}
EXPORT_SYMBOL(snd_pcm_format_signed);
/**
* snd_pcm_format_unsigned - Check the PCM format is unsigned linear
* @format: the format to check
@ -224,6 +226,8 @@ int snd_pcm_format_unsigned(snd_pcm_format_t format)
return !val;
}
EXPORT_SYMBOL(snd_pcm_format_unsigned);
/**
* snd_pcm_format_linear - Check the PCM format is linear
* @format: the format to check
@ -235,6 +239,8 @@ int snd_pcm_format_linear(snd_pcm_format_t format)
return snd_pcm_format_signed(format) >= 0;
}
EXPORT_SYMBOL(snd_pcm_format_linear);
/**
* snd_pcm_format_little_endian - Check the PCM format is little-endian
* @format: the format to check
@ -252,6 +258,8 @@ int snd_pcm_format_little_endian(snd_pcm_format_t format)
return val;
}
EXPORT_SYMBOL(snd_pcm_format_little_endian);
/**
* snd_pcm_format_big_endian - Check the PCM format is big-endian
* @format: the format to check
@ -269,6 +277,8 @@ int snd_pcm_format_big_endian(snd_pcm_format_t format)
return !val;
}
EXPORT_SYMBOL(snd_pcm_format_big_endian);
/**
* snd_pcm_format_width - return the bit-width of the format
* @format: the format to check
@ -286,6 +296,8 @@ int snd_pcm_format_width(snd_pcm_format_t format)
return val;
}
EXPORT_SYMBOL(snd_pcm_format_width);
/**
* snd_pcm_format_physical_width - return the physical bit-width of the format
* @format: the format to check
@ -303,6 +315,8 @@ int snd_pcm_format_physical_width(snd_pcm_format_t format)
return val;
}
EXPORT_SYMBOL(snd_pcm_format_physical_width);
/**
* snd_pcm_format_size - return the byte size of samples on the given format
* @format: the format to check
@ -318,6 +332,8 @@ ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples)
return samples * phys_width / 8;
}
EXPORT_SYMBOL(snd_pcm_format_size);
/**
* snd_pcm_format_silence_64 - return the silent data in 8 bytes array
* @format: the format to check
@ -333,6 +349,8 @@ const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format)
return pcm_formats[format].silence;
}
EXPORT_SYMBOL(snd_pcm_format_silence_64);
/**
* snd_pcm_format_set_silence - set the silence data on the buffer
* @format: the PCM format
@ -402,6 +420,8 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int
return 0;
}
EXPORT_SYMBOL(snd_pcm_format_set_silence);
/* [width][unsigned][bigendian] */
static int linear_formats[4][2][2] = {
{{ SNDRV_PCM_FORMAT_S8, SNDRV_PCM_FORMAT_S8},
@ -432,6 +452,8 @@ snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsignd, int big_end
return linear_formats[width][!!unsignd][!!big_endian];
}
EXPORT_SYMBOL(snd_pcm_build_linear_format);
/**
* snd_pcm_limit_hw_rates - determine rate_min/rate_max fields
* @runtime: the runtime instance
@ -463,3 +485,5 @@ int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime)
}
return 0;
}
EXPORT_SYMBOL(snd_pcm_limit_hw_rates);

21
sound/core/pcm_native.c
View File

@ -71,8 +71,9 @@ static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream);
*/
DEFINE_RWLOCK(snd_pcm_link_rwlock);
static DECLARE_RWSEM(snd_pcm_link_rwsem);
EXPORT_SYMBOL(snd_pcm_link_rwlock);
static DECLARE_RWSEM(snd_pcm_link_rwsem);
static inline mm_segment_t snd_enter_user(void)
{
@ -319,6 +320,8 @@ int snd_pcm_hw_refine(struct snd_pcm_substream *substream,
return 0;
}
EXPORT_SYMBOL(snd_pcm_hw_refine);
static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params __user * _params)
{
@ -936,6 +939,8 @@ int snd_pcm_stop(struct snd_pcm_substream *substream, int state)
return snd_pcm_action(&snd_pcm_action_stop, substream, state);
}
EXPORT_SYMBOL(snd_pcm_stop);
/**
* snd_pcm_drain_done
* @substream: the PCM substream
@ -1085,6 +1090,8 @@ int snd_pcm_suspend(struct snd_pcm_substream *substream)
return err;
}
EXPORT_SYMBOL(snd_pcm_suspend);
/**
* snd_pcm_suspend_all
* @pcm: the PCM instance
@ -1114,6 +1121,8 @@ int snd_pcm_suspend_all(struct snd_pcm *pcm)
return 0;
}
EXPORT_SYMBOL(snd_pcm_suspend_all);
/* resume */
static int snd_pcm_pre_resume(struct snd_pcm_substream *substream, int state)
@ -2020,6 +2029,8 @@ void snd_pcm_release_substream(struct snd_pcm_substream *substream)
snd_pcm_detach_substream(substream);
}
EXPORT_SYMBOL(snd_pcm_release_substream);
int snd_pcm_open_substream(struct snd_pcm *pcm, int stream,
struct file *file,
struct snd_pcm_substream **rsubstream)
@ -2056,6 +2067,8 @@ int snd_pcm_open_substream(struct snd_pcm *pcm, int stream,
return err;
}
EXPORT_SYMBOL(snd_pcm_open_substream);
static int snd_pcm_open_file(struct file *file,
struct snd_pcm *pcm,
int stream,
@ -2768,6 +2781,8 @@ int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream,
return result;
}
EXPORT_SYMBOL(snd_pcm_kernel_ioctl);
static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count,
loff_t * offset)
{
@ -3169,6 +3184,8 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream,
atomic_inc(&substream->runtime->mmap_count);
return 0;
}
EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem);
#endif /* SNDRV_PCM_INFO_MMAP */
/*
@ -3212,6 +3229,8 @@ int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file,
return snd_pcm_default_mmap(substream, area);
}
EXPORT_SYMBOL(snd_pcm_mmap_data);
static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area)
{
struct snd_pcm_file * pcm_file;