static void xrun(struct snd_pcm_substream *substream)
{
snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
-#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+#ifdef CONFIG_SND_DEBUG
if (substream->pstr->xrun_debug) {
snd_printd(KERN_DEBUG "XRUN: pcmC%dD%d%c\n",
substream->pcm->card->number,
delta = hw_ptr_interrupt - new_hw_ptr;
if (delta > 0) {
if ((snd_pcm_uframes_t)delta < runtime->buffer_size / 2) {
-#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+#ifdef CONFIG_SND_DEBUG
if (runtime->periods > 1 && substream->pstr->xrun_debug) {
snd_printd(KERN_ERR "Unexpected hw_pointer value [1] (stream = %i, delta: -%ld, max jitter = %ld): wrong interrupt acknowledge?\n", substream->stream, (long) delta, runtime->buffer_size / 2);
if (substream->pstr->xrun_debug > 1)
delta = old_hw_ptr - new_hw_ptr;
if (delta > 0) {
if ((snd_pcm_uframes_t)delta < runtime->buffer_size / 2) {
-#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+#ifdef CONFIG_SND_DEBUG
if (runtime->periods > 2 && substream->pstr->xrun_debug) {
snd_printd(KERN_ERR "Unexpected hw_pointer value [2] (stream = %i, delta: -%ld, max jitter = %ld): wrong interrupt acknowledge?\n", substream->stream, (long) delta, runtime->buffer_size / 2);
if (substream->pstr->xrun_debug > 1)
substream->ops = ops;
}
-EXPORT_SYMBOL(snd_pcm_set_ops);
/**
* snd_pcm_sync - set the PCM sync id
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)
{
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
int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v)
{
int changed = 0;
- snd_assert(!snd_interval_empty(i), return -EINVAL);
+ assert(!snd_interval_empty(i));
if (i->min < v->min) {
i->min = v->min;
i->openmin = v->openmin;
return changed;
}
-EXPORT_SYMBOL(snd_interval_refine);
-
static int snd_interval_refine_first(struct snd_interval *i)
{
- snd_assert(!snd_interval_empty(i), return -EINVAL);
+ assert(!snd_interval_empty(i));
if (snd_interval_single(i))
return 0;
i->max = i->min;
static int snd_interval_refine_last(struct snd_interval *i)
{
- snd_assert(!snd_interval_empty(i), return -EINVAL);
+ assert(!snd_interval_empty(i));
if (snd_interval_single(i))
return 0;
i->min = i->max;
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) {
c->integer = 0;
}
+#undef assert
/* ---- */
return err;
}
-EXPORT_SYMBOL(snd_interval_ratnum);
-
/**
* snd_interval_ratden - refine the interval value
* @i: interval to refine
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;
return 0;
}
-EXPORT_SYMBOL(snd_pcm_hw_rule_add);
-
/**
* snd_pcm_hw_constraint_mask
* @runtime: PCM runtime instance
return snd_interval_setinteger(constrs_interval(constrs, var));
}
-EXPORT_SYMBOL(snd_pcm_hw_constraint_integer);
-
/**
* snd_pcm_hw_constraint_minmax
* @runtime: PCM runtime instance
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)
{
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)
{
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)
{
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)
{
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)
{
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[] = {
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
+#define INT_MIN ((int)((unsigned int)INT_MAX+1))
+#endif
static void _snd_pcm_hw_param_any(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
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;
params->info = ~0U;
}
-EXPORT_SYMBOL(_snd_pcm_hw_params_any);
+#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 */
/**
* snd_pcm_hw_param_value
* Return the value for field PAR if it's fixed in configuration space
* defined by PARAMS. Return -EINVAL otherwise
*/
-int snd_pcm_hw_param_value(const struct snd_pcm_hw_params *params,
- snd_pcm_hw_param_t var, int *dir)
+static 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);
*dir = i->openmin;
return snd_interval_value(i);
}
+ assert(0);
+ 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;
}
-EXPORT_SYMBOL(snd_pcm_hw_param_value);
+/**
+ * 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;
+}
void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
}
}
-EXPORT_SYMBOL(_snd_pcm_hw_param_setempty);
+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 */
static int _snd_pcm_hw_param_first(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
changed = snd_mask_refine_first(hw_param_mask(params, var));
else if (hw_is_interval(var))
changed = snd_interval_refine_first(hw_param_interval(params, var));
- else
+ else {
+ assert(0);
return -EINVAL;
+ }
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
* values > minimum. Reduce configuration space accordingly.
* Return the minimum.
*/
-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)
+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 changed = _snd_pcm_hw_param_first(params, var);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
- snd_assert(err >= 0, return err);
+ assert(err >= 0);
}
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)
{
changed = snd_mask_refine_last(hw_param_mask(params, var));
else if (hw_is_interval(var))
changed = snd_interval_refine_last(hw_param_interval(params, var));
- else
+ else {
+ assert(0);
return -EINVAL;
+ }
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
* values < maximum. Reduce configuration space accordingly.
* Return the maximum.
*/
-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)
+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 changed = _snd_pcm_hw_param_last(params, var);
if (changed < 0)
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
- snd_assert(err >= 0, return err);
+ assert(err >= 0);
}
return snd_pcm_hw_param_value(params, var, dir);
}
-EXPORT_SYMBOL(snd_pcm_hw_param_last);
+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;
+}
/**
* snd_pcm_hw_param_choose
* first access, first format, first subformat, min channels,
* min rate, min period time, max buffer size, min tick time
*/
-int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm,
- struct snd_pcm_hw_params *params)
-{
- static int vars[] = {
- SNDRV_PCM_HW_PARAM_ACCESS,
- SNDRV_PCM_HW_PARAM_FORMAT,
- SNDRV_PCM_HW_PARAM_SUBFORMAT,
- SNDRV_PCM_HW_PARAM_CHANNELS,
- SNDRV_PCM_HW_PARAM_RATE,
- SNDRV_PCM_HW_PARAM_PERIOD_TIME,
- SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
- SNDRV_PCM_HW_PARAM_TICK_TIME,
- -1
- };
- int err, *v;
+int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm, struct snd_pcm_hw_params *params)
+{
+ int err;
+
+ err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_ACCESS, NULL);
+ assert(err >= 0);
+
+ err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_FORMAT, NULL);
+ assert(err >= 0);
+
+ err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_SUBFORMAT, NULL);
+ assert(err >= 0);
+
+ err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_CHANNELS, NULL);
+ assert(err >= 0);
+
+ err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_RATE, NULL);
+ assert(err >= 0);
+
+ err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_PERIOD_TIME, NULL);
+ assert(err >= 0);
+
+ err = snd_pcm_hw_param_last(pcm, params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL);
+ assert(err >= 0);
+
+ err = snd_pcm_hw_param_first(pcm, params, SNDRV_PCM_HW_PARAM_TICK_TIME, NULL);
+ assert(err >= 0);
- for (v = vars; *v != -1; v++) {
- if (*v != SNDRV_PCM_HW_PARAM_BUFFER_SIZE)
- err = snd_pcm_hw_param_first(pcm, params, *v, NULL);
- else
- err = snd_pcm_hw_param_last(pcm, params, *v, NULL);
- snd_assert(err >= 0, return err);
- }
return 0;
}
+#undef assert
+
static int snd_pcm_lib_ioctl_reset(struct snd_pcm_substream *substream,
void *arg)
{
return -ENXIO;
}
-EXPORT_SYMBOL(snd_pcm_lib_ioctl);
-
/*
* Conditions
*/
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,
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
- nonblock = !!(substream->f_flags & O_NONBLOCK);
+ snd_assert(substream->ffile != NULL, return -ENXIO);
+ nonblock = !!(substream->ffile->f_flags & O_NONBLOCK);
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+ if (substream->oss.oss) {
+ struct snd_pcm_oss_setup *setup = substream->oss.setup;
+ if (setup != NULL) {
+ if (setup->nonblock)
+ nonblock = 1;
+ else if (setup->block)
+ nonblock = 0;
+ }
+ }
+#endif
if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED &&
runtime->channels > 1)
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,
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
- nonblock = !!(substream->f_flags & O_NONBLOCK);
+ snd_assert(substream->ffile != NULL, return -ENXIO);
+ nonblock = !!(substream->ffile->f_flags & O_NONBLOCK);
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+ if (substream->oss.oss) {
+ struct snd_pcm_oss_setup *setup = substream->oss.setup;
+ if (setup != NULL) {
+ if (setup->nonblock)
+ nonblock = 1;
+ else if (setup->block)
+ nonblock = 0;
+ }
+ }
+#endif
if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
return -EINVAL;
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,
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
- nonblock = !!(substream->f_flags & O_NONBLOCK);
+ snd_assert(substream->ffile != NULL, return -ENXIO);
+ nonblock = !!(substream->ffile->f_flags & O_NONBLOCK);
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+ if (substream->oss.oss) {
+ struct snd_pcm_oss_setup *setup = substream->oss.setup;
+ if (setup != NULL) {
+ if (setup->nonblock)
+ nonblock = 1;
+ else if (setup->block)
+ nonblock = 0;
+ }
+ }
+#endif
if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED)
return -EINVAL;
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,
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
- nonblock = !!(substream->f_flags & O_NONBLOCK);
+ snd_assert(substream->ffile != NULL, return -ENXIO);
+ nonblock = !!(substream->ffile->f_flags & O_NONBLOCK);
+#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
+ if (substream->oss.oss) {
+ struct snd_pcm_oss_setup *setup = substream->oss.setup;
+ if (setup != NULL) {
+ if (setup->nonblock)
+ nonblock = 1;
+ else if (setup->block)
+ nonblock = 0;
+ }
+ }
+#endif
+
if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
return -EINVAL;
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);
git://git.onelab.eu / linux-2.6.git / blobdiff