/*
* Digital Audio (PCM) abstract layer
- * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* Abramo Bagnara <abramo@alsa-project.org>
*
*
*
*/
-#include <sound/driver.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <sound/core.h>
*
* when runtime->silence_size >= runtime->boundary - fill processed area with silence immediately
*/
-void snd_pcm_playback_silence(snd_pcm_substream_t *substream, snd_pcm_uframes_t new_hw_ptr)
+void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_uframes_t new_hw_ptr)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t frames, ofs, transfer;
if (runtime->silence_size < runtime->boundary) {
runtime->silence_filled = 0;
runtime->silence_start = runtime->control->appl_ptr;
}
- if (runtime->silence_filled == runtime->buffer_size)
+ if (runtime->silence_filled >= runtime->buffer_size)
return;
- snd_assert(runtime->silence_filled <= runtime->buffer_size, return);
noise_dist = snd_pcm_playback_hw_avail(runtime) + runtime->silence_filled;
if (noise_dist >= (snd_pcm_sframes_t) runtime->silence_threshold)
return;
runtime->silence_filled -= frames;
if ((snd_pcm_sframes_t)runtime->silence_filled < 0) {
runtime->silence_filled = 0;
- runtime->silence_start = (ofs + frames) - runtime->buffer_size;
+ runtime->silence_start = new_hw_ptr;
} else {
- runtime->silence_start = ofs - runtime->silence_filled;
+ runtime->silence_start = ofs;
}
- if ((snd_pcm_sframes_t)runtime->silence_start < 0)
- runtime->silence_start += runtime->boundary;
}
frames = runtime->buffer_size - runtime->silence_filled;
}
- snd_assert(frames <= runtime->buffer_size, return);
+ if (snd_BUG_ON(frames > runtime->buffer_size))
+ return;
if (frames == 0)
return;
- ofs = (runtime->silence_start + runtime->silence_filled) % runtime->buffer_size;
+ ofs = runtime->silence_start % runtime->buffer_size;
while (frames > 0) {
transfer = ofs + frames > runtime->buffer_size ? runtime->buffer_size - ofs : frames;
if (runtime->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED ||
if (substream->ops->silence) {
int err;
err = substream->ops->silence(substream, -1, ofs, transfer);
- snd_assert(err >= 0, );
+ snd_BUG_ON(err < 0);
} else {
char *hwbuf = runtime->dma_area + frames_to_bytes(runtime, ofs);
snd_pcm_format_set_silence(runtime->format, hwbuf, transfer * runtime->channels);
for (c = 0; c < channels; ++c) {
int err;
err = substream->ops->silence(substream, c, ofs, transfer);
- snd_assert(err >= 0, );
+ snd_BUG_ON(err < 0);
}
} else {
size_t dma_csize = runtime->dma_bytes / channels;
}
}
-static void xrun(snd_pcm_substream_t *substream)
+#ifdef CONFIG_SND_PCM_XRUN_DEBUG
+#define xrun_debug(substream) ((substream)->pstr->xrun_debug)
+#else
+#define xrun_debug(substream) 0
+#endif
+
+#define dump_stack_on_xrun(substream) do { \
+ if (xrun_debug(substream) > 1) \
+ dump_stack(); \
+ } while (0)
+
+static void xrun(struct snd_pcm_substream *substream)
{
snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
-#ifdef CONFIG_SND_DEBUG
- if (substream->pstr->xrun_debug) {
+ if (xrun_debug(substream)) {
snd_printd(KERN_DEBUG "XRUN: pcmC%dD%d%c\n",
substream->pcm->card->number,
substream->pcm->device,
substream->stream ? 'c' : 'p');
- if (substream->pstr->xrun_debug > 1)
- dump_stack();
+ dump_stack_on_xrun(substream);
}
-#endif
}
-static inline snd_pcm_uframes_t snd_pcm_update_hw_ptr_pos(snd_pcm_substream_t *substream,
- snd_pcm_runtime_t *runtime)
+static snd_pcm_uframes_t
+snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream,
+ struct snd_pcm_runtime *runtime)
{
snd_pcm_uframes_t pos;
+ if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE)
+ snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp);
pos = substream->ops->pointer(substream);
if (pos == SNDRV_PCM_POS_XRUN)
return pos; /* XRUN */
- if (runtime->tstamp_mode & SNDRV_PCM_TSTAMP_MMAP)
- snd_timestamp_now((snd_timestamp_t*)&runtime->status->tstamp, runtime->tstamp_timespec);
-#ifdef CONFIG_SND_DEBUG
if (pos >= runtime->buffer_size) {
- snd_printk(KERN_ERR "BUG: stream = %i, pos = 0x%lx, buffer size = 0x%lx, period size = 0x%lx\n", substream->stream, pos, runtime->buffer_size, runtime->period_size);
- } else
-#endif
- snd_runtime_check(pos < runtime->buffer_size, return 0);
+ if (printk_ratelimit()) {
+ snd_printd(KERN_ERR "BUG: stream = %i, pos = 0x%lx, "
+ "buffer size = 0x%lx, period size = 0x%lx\n",
+ substream->stream, pos, runtime->buffer_size,
+ runtime->period_size);
+ }
+ pos = 0;
+ }
pos -= pos % runtime->min_align;
return pos;
}
-static inline int snd_pcm_update_hw_ptr_post(snd_pcm_substream_t *substream,
- snd_pcm_runtime_t *runtime)
+static int snd_pcm_update_hw_ptr_post(struct snd_pcm_substream *substream,
+ struct snd_pcm_runtime *runtime)
{
snd_pcm_uframes_t avail;
return 0;
}
-static inline int snd_pcm_update_hw_ptr_interrupt(snd_pcm_substream_t *substream)
+#define hw_ptr_error(substream, fmt, args...) \
+ do { \
+ if (xrun_debug(substream)) { \
+ if (printk_ratelimit()) { \
+ snd_printd("PCM: " fmt, ##args); \
+ } \
+ dump_stack_on_xrun(substream); \
+ } \
+ } while (0)
+
+static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t pos;
- snd_pcm_uframes_t new_hw_ptr, hw_ptr_interrupt;
- snd_pcm_sframes_t delta;
+ snd_pcm_uframes_t old_hw_ptr, new_hw_ptr, hw_ptr_interrupt, hw_base;
+ snd_pcm_sframes_t hdelta, delta;
+ unsigned long jdelta;
+ old_hw_ptr = runtime->status->hw_ptr;
pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
if (pos == SNDRV_PCM_POS_XRUN) {
xrun(substream);
return -EPIPE;
}
- if (runtime->period_size == runtime->buffer_size)
- goto __next_buf;
- new_hw_ptr = runtime->hw_ptr_base + pos;
+ hw_base = runtime->hw_ptr_base;
+ new_hw_ptr = hw_base + pos;
hw_ptr_interrupt = runtime->hw_ptr_interrupt + runtime->period_size;
-
- delta = hw_ptr_interrupt - new_hw_ptr;
- if (delta > 0) {
- if ((snd_pcm_uframes_t)delta < runtime->buffer_size / 2) {
-#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)
- dump_stack();
- }
-#endif
- return 0;
+ delta = new_hw_ptr - hw_ptr_interrupt;
+ if (hw_ptr_interrupt >= runtime->boundary) {
+ hw_ptr_interrupt -= runtime->boundary;
+ if (hw_base < runtime->boundary / 2)
+ /* hw_base was already lapped; recalc delta */
+ delta = new_hw_ptr - hw_ptr_interrupt;
+ }
+ if (delta < 0) {
+ delta += runtime->buffer_size;
+ if (delta < 0) {
+ hw_ptr_error(substream,
+ "Unexpected hw_pointer value "
+ "(stream=%i, pos=%ld, intr_ptr=%ld)\n",
+ substream->stream, (long)pos,
+ (long)hw_ptr_interrupt);
+ /* rebase to interrupt position */
+ hw_base = new_hw_ptr = hw_ptr_interrupt;
+ /* align hw_base to buffer_size */
+ hw_base -= hw_base % runtime->buffer_size;
+ delta = 0;
+ } else {
+ hw_base += runtime->buffer_size;
+ if (hw_base >= runtime->boundary)
+ hw_base = 0;
+ new_hw_ptr = hw_base + pos;
}
- __next_buf:
- runtime->hw_ptr_base += runtime->buffer_size;
- if (runtime->hw_ptr_base == runtime->boundary)
- runtime->hw_ptr_base = 0;
- new_hw_ptr = runtime->hw_ptr_base + pos;
}
-
+ hdelta = new_hw_ptr - old_hw_ptr;
+ jdelta = jiffies - runtime->hw_ptr_jiffies;
+ if (((hdelta * HZ) / runtime->rate) > jdelta + HZ/100) {
+ delta = jdelta /
+ (((runtime->period_size * HZ) / runtime->rate)
+ + HZ/100);
+ hw_ptr_error(substream,
+ "hw_ptr skipping! [Q] "
+ "(pos=%ld, delta=%ld, period=%ld, "
+ "jdelta=%lu/%lu/%lu)\n",
+ (long)pos, (long)hdelta,
+ (long)runtime->period_size, jdelta,
+ ((hdelta * HZ) / runtime->rate), delta);
+ hw_ptr_interrupt = runtime->hw_ptr_interrupt +
+ runtime->period_size * delta;
+ if (hw_ptr_interrupt >= runtime->boundary)
+ hw_ptr_interrupt -= runtime->boundary;
+ /* rebase to interrupt position */
+ hw_base = new_hw_ptr = hw_ptr_interrupt;
+ /* align hw_base to buffer_size */
+ hw_base -= hw_base % runtime->buffer_size;
+ delta = 0;
+ }
+ if (delta > runtime->period_size + runtime->period_size / 2) {
+ hw_ptr_error(substream,
+ "Lost interrupts? "
+ "(stream=%i, delta=%ld, intr_ptr=%ld)\n",
+ substream->stream, (long)delta,
+ (long)hw_ptr_interrupt);
+ /* rebase hw_ptr_interrupt */
+ hw_ptr_interrupt =
+ new_hw_ptr - new_hw_ptr % runtime->period_size;
+ }
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
runtime->silence_size > 0)
snd_pcm_playback_silence(substream, new_hw_ptr);
+ runtime->hw_ptr_base = hw_base;
runtime->status->hw_ptr = new_hw_ptr;
- runtime->hw_ptr_interrupt = new_hw_ptr - new_hw_ptr % runtime->period_size;
+ runtime->hw_ptr_jiffies = jiffies;
+ runtime->hw_ptr_interrupt = hw_ptr_interrupt;
return snd_pcm_update_hw_ptr_post(substream, runtime);
}
/* CAUTION: call it with irq disabled */
-int snd_pcm_update_hw_ptr(snd_pcm_substream_t *substream)
+int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t pos;
- snd_pcm_uframes_t old_hw_ptr, new_hw_ptr;
+ snd_pcm_uframes_t old_hw_ptr, new_hw_ptr, hw_base;
snd_pcm_sframes_t delta;
+ unsigned long jdelta;
old_hw_ptr = runtime->status->hw_ptr;
pos = snd_pcm_update_hw_ptr_pos(substream, runtime);
xrun(substream);
return -EPIPE;
}
- new_hw_ptr = runtime->hw_ptr_base + pos;
-
- delta = old_hw_ptr - new_hw_ptr;
- if (delta > 0) {
- if ((snd_pcm_uframes_t)delta < runtime->buffer_size / 2) {
-#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)
- dump_stack();
- }
-#endif
+ hw_base = runtime->hw_ptr_base;
+ new_hw_ptr = hw_base + pos;
+
+ delta = new_hw_ptr - old_hw_ptr;
+ jdelta = jiffies - runtime->hw_ptr_jiffies;
+ if (delta < 0) {
+ delta += runtime->buffer_size;
+ if (delta < 0) {
+ hw_ptr_error(substream,
+ "Unexpected hw_pointer value [2] "
+ "(stream=%i, pos=%ld, old_ptr=%ld, jdelta=%li)\n",
+ substream->stream, (long)pos,
+ (long)old_hw_ptr, jdelta);
return 0;
}
- runtime->hw_ptr_base += runtime->buffer_size;
- if (runtime->hw_ptr_base == runtime->boundary)
- runtime->hw_ptr_base = 0;
- new_hw_ptr = runtime->hw_ptr_base + pos;
+ hw_base += runtime->buffer_size;
+ if (hw_base >= runtime->boundary)
+ hw_base = 0;
+ new_hw_ptr = hw_base + pos;
+ }
+ if (((delta * HZ) / runtime->rate) > jdelta + HZ/100) {
+ hw_ptr_error(substream,
+ "hw_ptr skipping! "
+ "(pos=%ld, delta=%ld, period=%ld, jdelta=%lu/%lu)\n",
+ (long)pos, (long)delta,
+ (long)runtime->period_size, jdelta,
+ ((delta * HZ) / runtime->rate));
+ return 0;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
runtime->silence_size > 0)
snd_pcm_playback_silence(substream, new_hw_ptr);
+ runtime->hw_ptr_base = hw_base;
runtime->status->hw_ptr = new_hw_ptr;
+ runtime->hw_ptr_jiffies = jiffies;
return snd_pcm_update_hw_ptr_post(substream, runtime);
}
*
* Sets the given PCM operators to the pcm instance.
*/
-void snd_pcm_set_ops(snd_pcm_t *pcm, int direction, snd_pcm_ops_t *ops)
+void snd_pcm_set_ops(struct snd_pcm *pcm, int direction, struct snd_pcm_ops *ops)
{
- snd_pcm_str_t *stream = &pcm->streams[direction];
- snd_pcm_substream_t *substream;
+ struct snd_pcm_str *stream = &pcm->streams[direction];
+ struct snd_pcm_substream *substream;
for (substream = stream->substream; substream != NULL; substream = substream->next)
substream->ops = ops;
}
+EXPORT_SYMBOL(snd_pcm_set_ops);
/**
* snd_pcm_sync - set the PCM sync id
*
* Sets the PCM sync identifier for the card.
*/
-void snd_pcm_set_sync(snd_pcm_substream_t * substream)
+void snd_pcm_set_sync(struct snd_pcm_substream *substream)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
runtime->sync.id32[0] = substream->pcm->card->number;
runtime->sync.id32[1] = -1;
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)
{
{
u_int64_t n = (u_int64_t) a * b;
if (c == 0) {
- snd_assert(n > 0, );
+ snd_BUG_ON(!n);
*r = 0;
return UINT_MAX;
}
return n;
}
-static int snd_interval_refine_min(snd_interval_t *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(snd_interval_t *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
*
* Returns non-zero if the value is changed, zero if not changed.
*/
-int snd_interval_refine(snd_interval_t *i, const snd_interval_t *v)
+int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v)
{
int changed = 0;
- assert(!snd_interval_empty(i));
+ if (snd_BUG_ON(snd_interval_empty(i)))
+ return -EINVAL;
if (i->min < v->min) {
i->min = v->min;
i->openmin = v->openmin;
return changed;
}
-static int snd_interval_refine_first(snd_interval_t *i)
+EXPORT_SYMBOL(snd_interval_refine);
+
+static int snd_interval_refine_first(struct snd_interval *i)
{
- assert(!snd_interval_empty(i));
+ if (snd_BUG_ON(snd_interval_empty(i)))
+ return -EINVAL;
if (snd_interval_single(i))
return 0;
i->max = i->min;
return 1;
}
-static int snd_interval_refine_last(snd_interval_t *i)
+static int snd_interval_refine_last(struct snd_interval *i)
{
- assert(!snd_interval_empty(i));
+ if (snd_BUG_ON(snd_interval_empty(i)))
+ return -EINVAL;
if (snd_interval_single(i))
return 0;
i->min = i->max;
return 1;
}
-static int snd_interval_refine_set(snd_interval_t *i, unsigned int val)
-{
- snd_interval_t 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 snd_interval_t *a, const snd_interval_t *b, snd_interval_t *c)
+void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c)
{
if (a->empty || b->empty) {
snd_interval_none(c);
/**
* snd_interval_div - refine the interval value with division
+ * @a: dividend
+ * @b: divisor
+ * @c: quotient
*
* c = a / b
*
* Returns non-zero if the value is changed, zero if not changed.
*/
-void snd_interval_div(const snd_interval_t *a, const snd_interval_t *b, snd_interval_t *c)
+void snd_interval_div(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c)
{
unsigned int r;
if (a->empty || b->empty) {
/**
* snd_interval_muldivk - refine the interval value
- *
+ * @a: dividend 1
+ * @b: dividend 2
+ * @k: divisor (as integer)
+ * @c: result
+ *
* c = a * b / k
*
* Returns non-zero if the value is changed, zero if not changed.
*/
-void snd_interval_muldivk(const snd_interval_t *a, const snd_interval_t *b,
- unsigned int k, snd_interval_t *c)
+void snd_interval_muldivk(const struct snd_interval *a, const struct snd_interval *b,
+ unsigned int k, struct snd_interval *c)
{
unsigned int r;
if (a->empty || b->empty) {
/**
* snd_interval_mulkdiv - refine the interval value
+ * @a: dividend 1
+ * @k: dividend 2 (as integer)
+ * @b: divisor
+ * @c: result
*
* c = a * k / b
*
* Returns non-zero if the value is changed, zero if not changed.
*/
-void snd_interval_mulkdiv(const snd_interval_t *a, unsigned int k,
- const snd_interval_t *b, snd_interval_t *c)
+void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k,
+ const struct snd_interval *b, struct snd_interval *c)
{
unsigned int r;
if (a->empty || b->empty) {
c->integer = 0;
}
-#undef assert
/* ---- */
/**
* snd_interval_ratnum - refine the interval value
+ * @i: interval to refine
+ * @rats_count: number of ratnum_t
+ * @rats: ratnum_t array
+ * @nump: pointer to store the resultant numerator
+ * @denp: pointer to store the resultant denominator
*
* Returns non-zero if the value is changed, zero if not changed.
*/
-int snd_interval_ratnum(snd_interval_t *i,
- unsigned int rats_count, ratnum_t *rats,
- unsigned int *nump, unsigned int *denp)
+int snd_interval_ratnum(struct snd_interval *i,
+ unsigned int rats_count, struct snd_ratnum *rats,
+ unsigned int *nump, unsigned int *denp)
{
unsigned int best_num, best_diff, best_den;
unsigned int k;
- snd_interval_t t;
+ struct snd_interval t;
int err;
best_num = best_den = best_diff = 0;
return err;
}
+EXPORT_SYMBOL(snd_interval_ratnum);
+
/**
* snd_interval_ratden - refine the interval value
+ * @i: interval to refine
+ * @rats_count: number of struct ratden
+ * @rats: struct ratden array
+ * @nump: pointer to store the resultant numerator
+ * @denp: pointer to store the resultant denominator
*
* Returns non-zero if the value is changed, zero if not changed.
*/
-static int snd_interval_ratden(snd_interval_t *i,
- unsigned int rats_count, ratden_t *rats,
+static int snd_interval_ratden(struct snd_interval *i,
+ unsigned int rats_count, struct snd_ratden *rats,
unsigned int *nump, unsigned int *denp)
{
unsigned int best_num, best_diff, best_den;
unsigned int k;
- snd_interval_t t;
+ struct snd_interval t;
int err;
best_num = best_den = best_diff = 0;
*
* Returns non-zero if the value is changed, zero if not changed.
*/
-int snd_interval_list(snd_interval_t *i, unsigned int count, unsigned int *list, unsigned int mask)
+int snd_interval_list(struct snd_interval *i, unsigned int count, unsigned int *list, unsigned int mask)
{
unsigned int k;
int changed = 0;
+
+ if (!count) {
+ i->empty = 1;
+ return -EINVAL;
+ }
for (k = 0; k < count; k++) {
if (mask && !(mask & (1 << k)))
continue;
return changed;
}
-static int snd_interval_step(snd_interval_t *i, unsigned int min, unsigned int step)
+EXPORT_SYMBOL(snd_interval_list);
+
+static int snd_interval_step(struct snd_interval *i, unsigned int min, unsigned int step)
{
unsigned int n;
int changed = 0;
*
* Returns zero if successful, or a negative error code on failure.
*/
-int snd_pcm_hw_rule_add(snd_pcm_runtime_t *runtime, unsigned int cond,
+int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond,
int var,
snd_pcm_hw_rule_func_t func, void *private,
int dep, ...)
{
- snd_pcm_hw_constraints_t *constrs = &runtime->hw_constraints;
- snd_pcm_hw_rule_t *c;
+ struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints;
+ struct snd_pcm_hw_rule *c;
unsigned int k;
va_list args;
va_start(args, dep);
if (constrs->rules_num >= constrs->rules_all) {
- snd_pcm_hw_rule_t *new;
+ struct snd_pcm_hw_rule *new;
unsigned int new_rules = constrs->rules_all + 16;
new = kcalloc(new_rules, sizeof(*c), GFP_KERNEL);
if (!new)
c->private = private;
k = 0;
while (1) {
- snd_assert(k < ARRAY_SIZE(c->deps), return -EINVAL);
+ if (snd_BUG_ON(k >= ARRAY_SIZE(c->deps)))
+ return -EINVAL;
c->deps[k++] = dep;
if (dep < 0)
break;
return 0;
}
+EXPORT_SYMBOL(snd_pcm_hw_rule_add);
+
/**
- * snd_pcm_hw_constraint_mask
+ * snd_pcm_hw_constraint_mask - apply the given bitmap mask constraint
+ * @runtime: PCM runtime instance
+ * @var: hw_params variable to apply the mask
+ * @mask: the bitmap mask
+ *
+ * Apply the constraint of the given bitmap mask to a 32-bit mask parameter.
*/
-int snd_pcm_hw_constraint_mask(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var,
+int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
u_int32_t mask)
{
- snd_pcm_hw_constraints_t *constrs = &runtime->hw_constraints;
- snd_mask_t *maskp = constrs_mask(constrs, var);
+ struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints;
+ struct snd_mask *maskp = constrs_mask(constrs, var);
*maskp->bits &= mask;
memset(maskp->bits + 1, 0, (SNDRV_MASK_MAX-32) / 8); /* clear rest */
if (*maskp->bits == 0)
}
/**
- * snd_pcm_hw_constraint_mask64
+ * snd_pcm_hw_constraint_mask64 - apply the given bitmap mask constraint
+ * @runtime: PCM runtime instance
+ * @var: hw_params variable to apply the mask
+ * @mask: the 64bit bitmap mask
+ *
+ * Apply the constraint of the given bitmap mask to a 64-bit mask parameter.
*/
-int snd_pcm_hw_constraint_mask64(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var,
+int snd_pcm_hw_constraint_mask64(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
u_int64_t mask)
{
- snd_pcm_hw_constraints_t *constrs = &runtime->hw_constraints;
- snd_mask_t *maskp = constrs_mask(constrs, var);
+ struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints;
+ struct snd_mask *maskp = constrs_mask(constrs, var);
maskp->bits[0] &= (u_int32_t)mask;
maskp->bits[1] &= (u_int32_t)(mask >> 32);
memset(maskp->bits + 2, 0, (SNDRV_MASK_MAX-64) / 8); /* clear rest */
}
/**
- * snd_pcm_hw_constraint_integer
+ * snd_pcm_hw_constraint_integer - apply an integer constraint to an interval
+ * @runtime: PCM runtime instance
+ * @var: hw_params variable to apply the integer constraint
+ *
+ * Apply the constraint of integer to an interval parameter.
*/
-int snd_pcm_hw_constraint_integer(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var)
+int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var)
{
- snd_pcm_hw_constraints_t *constrs = &runtime->hw_constraints;
+ struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints;
return snd_interval_setinteger(constrs_interval(constrs, var));
}
+EXPORT_SYMBOL(snd_pcm_hw_constraint_integer);
+
/**
- * snd_pcm_hw_constraint_minmax
+ * snd_pcm_hw_constraint_minmax - apply a min/max range constraint to an interval
+ * @runtime: PCM runtime instance
+ * @var: hw_params variable to apply the range
+ * @min: the minimal value
+ * @max: the maximal value
+ *
+ * Apply the min/max range constraint to an interval parameter.
*/
-int snd_pcm_hw_constraint_minmax(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var,
+int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
unsigned int min, unsigned int max)
{
- snd_pcm_hw_constraints_t *constrs = &runtime->hw_constraints;
- snd_interval_t t;
+ struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints;
+ struct snd_interval t;
t.min = min;
t.max = max;
t.openmin = t.openmax = 0;
return snd_interval_refine(constrs_interval(constrs, var), &t);
}
-static int snd_pcm_hw_rule_list(snd_pcm_hw_params_t *params,
- snd_pcm_hw_rule_t *rule)
+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)
{
- snd_pcm_hw_constraint_list_t *list = rule->private;
+ struct snd_pcm_hw_constraint_list *list = rule->private;
return snd_interval_list(hw_param_interval(params, rule->var), list->count, list->list, list->mask);
}
/**
- * snd_pcm_hw_constraint_list
+ * snd_pcm_hw_constraint_list - apply a list of constraints to a parameter
+ * @runtime: PCM runtime instance
+ * @cond: condition bits
+ * @var: hw_params variable to apply the list constraint
+ * @l: list
+ *
+ * Apply the list of constraints to an interval parameter.
*/
-int snd_pcm_hw_constraint_list(snd_pcm_runtime_t *runtime,
+int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime,
unsigned int cond,
snd_pcm_hw_param_t var,
- snd_pcm_hw_constraint_list_t *l)
+ struct snd_pcm_hw_constraint_list *l)
{
return snd_pcm_hw_rule_add(runtime, cond, var,
snd_pcm_hw_rule_list, l,
var, -1);
}
-static int snd_pcm_hw_rule_ratnums(snd_pcm_hw_params_t *params,
- snd_pcm_hw_rule_t *rule)
+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)
{
- snd_pcm_hw_constraint_ratnums_t *r = rule->private;
+ struct snd_pcm_hw_constraint_ratnums *r = rule->private;
unsigned int num = 0, den = 0;
int err;
err = snd_interval_ratnum(hw_param_interval(params, rule->var),
}
/**
- * snd_pcm_hw_constraint_ratnums
+ * snd_pcm_hw_constraint_ratnums - apply ratnums constraint to a parameter
+ * @runtime: PCM runtime instance
+ * @cond: condition bits
+ * @var: hw_params variable to apply the ratnums constraint
+ * @r: struct snd_ratnums constriants
*/
-int snd_pcm_hw_constraint_ratnums(snd_pcm_runtime_t *runtime,
+int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime,
unsigned int cond,
snd_pcm_hw_param_t var,
- snd_pcm_hw_constraint_ratnums_t *r)
+ struct snd_pcm_hw_constraint_ratnums *r)
{
return snd_pcm_hw_rule_add(runtime, cond, var,
snd_pcm_hw_rule_ratnums, r,
var, -1);
}
-static int snd_pcm_hw_rule_ratdens(snd_pcm_hw_params_t *params,
- snd_pcm_hw_rule_t *rule)
+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)
{
- snd_pcm_hw_constraint_ratdens_t *r = rule->private;
+ struct snd_pcm_hw_constraint_ratdens *r = rule->private;
unsigned int num = 0, den = 0;
int err = snd_interval_ratden(hw_param_interval(params, rule->var),
r->nrats, r->rats, &num, &den);
}
/**
- * snd_pcm_hw_constraint_ratdens
+ * snd_pcm_hw_constraint_ratdens - apply ratdens constraint to a parameter
+ * @runtime: PCM runtime instance
+ * @cond: condition bits
+ * @var: hw_params variable to apply the ratdens constraint
+ * @r: struct snd_ratdens constriants
*/
-int snd_pcm_hw_constraint_ratdens(snd_pcm_runtime_t *runtime,
+int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime,
unsigned int cond,
snd_pcm_hw_param_t var,
- snd_pcm_hw_constraint_ratdens_t *r)
+ struct snd_pcm_hw_constraint_ratdens *r)
{
return snd_pcm_hw_rule_add(runtime, cond, var,
snd_pcm_hw_rule_ratdens, r,
var, -1);
}
-static int snd_pcm_hw_rule_msbits(snd_pcm_hw_params_t *params,
- snd_pcm_hw_rule_t *rule)
+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)
{
unsigned int l = (unsigned long) rule->private;
int width = l & 0xffff;
unsigned int msbits = l >> 16;
- snd_interval_t *i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS);
+ struct snd_interval *i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS);
if (snd_interval_single(i) && snd_interval_value(i) == width)
params->msbits = msbits;
return 0;
}
/**
- * snd_pcm_hw_constraint_msbits
+ * snd_pcm_hw_constraint_msbits - add a hw constraint msbits rule
+ * @runtime: PCM runtime instance
+ * @cond: condition bits
+ * @width: sample bits width
+ * @msbits: msbits width
*/
-int snd_pcm_hw_constraint_msbits(snd_pcm_runtime_t *runtime,
+int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime,
unsigned int cond,
unsigned int width,
unsigned int msbits)
SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1);
}
-static int snd_pcm_hw_rule_step(snd_pcm_hw_params_t *params,
- snd_pcm_hw_rule_t *rule)
+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)
{
unsigned long step = (unsigned long) rule->private;
return snd_interval_step(hw_param_interval(params, rule->var), 0, step);
}
/**
- * snd_pcm_hw_constraint_step
+ * snd_pcm_hw_constraint_step - add a hw constraint step rule
+ * @runtime: PCM runtime instance
+ * @cond: condition bits
+ * @var: hw_params variable to apply the step constraint
+ * @step: step size
*/
-int snd_pcm_hw_constraint_step(snd_pcm_runtime_t *runtime,
+int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime,
unsigned int cond,
snd_pcm_hw_param_t var,
unsigned long step)
var, -1);
}
-static int snd_pcm_hw_rule_pow2(snd_pcm_hw_params_t *params, snd_pcm_hw_rule_t *rule)
+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[] = {
+ static unsigned int pow2_sizes[] = {
1<<0, 1<<1, 1<<2, 1<<3, 1<<4, 1<<5, 1<<6, 1<<7,
1<<8, 1<<9, 1<<10, 1<<11, 1<<12, 1<<13, 1<<14, 1<<15,
1<<16, 1<<17, 1<<18, 1<<19, 1<<20, 1<<21, 1<<22, 1<<23,
}
/**
- * snd_pcm_hw_constraint_pow2
+ * snd_pcm_hw_constraint_pow2 - add a hw constraint power-of-2 rule
+ * @runtime: PCM runtime instance
+ * @cond: condition bits
+ * @var: hw_params variable to apply the power-of-2 constraint
*/
-int snd_pcm_hw_constraint_pow2(snd_pcm_runtime_t *runtime,
+int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime,
unsigned int cond,
snd_pcm_hw_param_t var)
{
var, -1);
}
-/* To use the same code we have in alsa-lib */
-#define snd_pcm_t snd_pcm_substream_t
-#define assert(i) snd_assert((i), return -EINVAL)
-#ifndef INT_MIN
-#define INT_MIN ((int)((unsigned int)INT_MAX+1))
-#endif
+EXPORT_SYMBOL(snd_pcm_hw_constraint_pow2);
-void _snd_pcm_hw_param_any(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var)
+static void _snd_pcm_hw_param_any(struct snd_pcm_hw_params *params,
+ snd_pcm_hw_param_t var)
{
if (hw_is_mask(var)) {
snd_mask_any(hw_param_mask(params, var));
snd_BUG();
}
-/**
- * snd_pcm_hw_param_any
- */
-int snd_pcm_hw_param_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
- snd_pcm_hw_param_t var)
-{
- _snd_pcm_hw_param_any(params, var);
- return snd_pcm_hw_refine(pcm, params);
-}
-
-void _snd_pcm_hw_params_any(snd_pcm_hw_params_t *params)
+void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params)
{
unsigned int k;
memset(params, 0, sizeof(*params));
params->info = ~0U;
}
-/**
- * snd_pcm_hw_params_any
- *
- * Fill PARAMS with full configuration space boundaries
- */
-int snd_pcm_hw_params_any(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
-{
- _snd_pcm_hw_params_any(params);
- return snd_pcm_hw_refine(pcm, params);
-}
+EXPORT_SYMBOL(_snd_pcm_hw_params_any);
/**
- * snd_pcm_hw_param_value
+ * snd_pcm_hw_param_value - return @params field @var value
+ * @params: the hw_params instance
+ * @var: parameter to retrieve
+ * @dir: pointer to the direction (-1,0,1) or %NULL
*
- * Return the value for field PAR if it's fixed in configuration space
- * defined by PARAMS. Return -EINVAL otherwise
+ * Return the value for field @var if it's fixed in configuration space
+ * defined by @params. Return -%EINVAL otherwise.
*/
-int snd_pcm_hw_param_value(const snd_pcm_hw_params_t *params,
+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 snd_mask_t *mask = hw_param_mask_c(params, var);
+ const struct snd_mask *mask = hw_param_mask_c(params, var);
if (!snd_mask_single(mask))
return -EINVAL;
if (dir)
return snd_mask_value(mask);
}
if (hw_is_interval(var)) {
- const snd_interval_t *i = hw_param_interval_c(params, var);
+ const struct snd_interval *i = hw_param_interval_c(params, var);
if (!snd_interval_single(i))
return -EINVAL;
if (dir)
*dir = i->openmin;
return snd_interval_value(i);
}
- assert(0);
- return -EINVAL;
-}
-
-/**
- * snd_pcm_hw_param_value_min
- *
- * Return the minimum value for field PAR.
- */
-unsigned int snd_pcm_hw_param_value_min(const snd_pcm_hw_params_t *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 snd_interval_t *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
- *
- * Return the maximum value for field PAR.
- */
-unsigned int snd_pcm_hw_param_value_max(const snd_pcm_hw_params_t *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 snd_interval_t *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(snd_pcm_hw_params_t *params,
+void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params,
snd_pcm_hw_param_t var)
{
if (hw_is_mask(var)) {
}
}
-int _snd_pcm_hw_param_setinteger(snd_pcm_hw_params_t *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;
-}
-
-/**
- * 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(snd_pcm_t *pcm,
- snd_pcm_hw_params_t *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;
-}
+EXPORT_SYMBOL(_snd_pcm_hw_param_setempty);
-int _snd_pcm_hw_param_first(snd_pcm_hw_params_t *params,
- snd_pcm_hw_param_t var)
+static int _snd_pcm_hw_param_first(struct snd_pcm_hw_params *params,
+ snd_pcm_hw_param_t var)
{
int changed;
if (hw_is_mask(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 {
- assert(0);
+ else
return -EINVAL;
- }
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
/**
- * snd_pcm_hw_param_first
+ * snd_pcm_hw_param_first - refine config space and return minimum value
+ * @pcm: PCM instance
+ * @params: the hw_params instance
+ * @var: parameter to retrieve
+ * @dir: pointer to the direction (-1,0,1) or %NULL
*
- * Inside configuration space defined by PARAMS remove from PAR all
+ * Inside configuration space defined by @params remove from @var all
* values > minimum. Reduce configuration space accordingly.
* Return the minimum.
*/
-int snd_pcm_hw_param_first(snd_pcm_t *pcm,
- snd_pcm_hw_params_t *params,
+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);
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
- assert(err >= 0);
+ if (snd_BUG_ON(err < 0))
+ return err;
}
return snd_pcm_hw_param_value(params, var, dir);
}
-int _snd_pcm_hw_param_last(snd_pcm_hw_params_t *params,
- snd_pcm_hw_param_t var)
+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)
{
int changed;
if (hw_is_mask(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 {
- assert(0);
+ else
return -EINVAL;
- }
if (changed) {
params->cmask |= 1 << var;
params->rmask |= 1 << var;
/**
- * snd_pcm_hw_param_last
+ * snd_pcm_hw_param_last - refine config space and return maximum value
+ * @pcm: PCM instance
+ * @params: the hw_params instance
+ * @var: parameter to retrieve
+ * @dir: pointer to the direction (-1,0,1) or %NULL
*
- * Inside configuration space defined by PARAMS remove from PAR all
+ * Inside configuration space defined by @params remove from @var all
* values < maximum. Reduce configuration space accordingly.
* Return the maximum.
*/
-int snd_pcm_hw_param_last(snd_pcm_t *pcm,
- snd_pcm_hw_params_t *params,
+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);
return changed;
if (params->rmask) {
int err = snd_pcm_hw_refine(pcm, params);
- assert(err >= 0);
- }
- return snd_pcm_hw_param_value(params, var, dir);
-}
-
-int _snd_pcm_hw_param_min(snd_pcm_hw_params_t *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
- *
- * 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
- */
-int snd_pcm_hw_param_min(snd_pcm_t *pcm, snd_pcm_hw_params_t *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);
-}
-
-int _snd_pcm_hw_param_max(snd_pcm_hw_params_t *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
- *
- * 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
- */
-int snd_pcm_hw_param_max(snd_pcm_t *pcm, snd_pcm_hw_params_t *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(snd_pcm_hw_params_t *params,
- snd_pcm_hw_param_t var, unsigned int val, int dir)
-{
- int changed;
- if (hw_is_mask(var)) {
- snd_mask_t *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)) {
- snd_interval_t *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 {
- snd_interval_t 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
- *
- * 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(snd_pcm_t *pcm, snd_pcm_hw_params_t *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);
-}
-
-int _snd_pcm_hw_param_mask(snd_pcm_hw_params_t *params,
- snd_pcm_hw_param_t var, const snd_mask_t *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
- *
- * 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(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
- snd_pcm_hw_param_t var, const snd_mask_t *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)
+ if (snd_BUG_ON(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);
+ return snd_pcm_hw_param_value(params, var, dir);
}
-/**
- * snd_pcm_hw_param_near
- *
- * 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(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
- snd_pcm_hw_param_t var, unsigned int best, int *dir)
-{
- snd_pcm_hw_params_t *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) {
- snd_pcm_hw_params_t *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
+ * snd_pcm_hw_param_choose - choose a configuration defined by @params
+ * @pcm: PCM instance
+ * @params: the hw_params instance
*
- * Choose one configuration from configuration space defined by PARAMS
+ * Choose one configuration from configuration space defined by @params.
* The configuration chosen is that obtained fixing in this order:
* 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(snd_pcm_t *pcm, snd_pcm_hw_params_t *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);
+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;
+ 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);
+ if (snd_BUG_ON(err < 0))
+ return err;
+ }
return 0;
}
-#undef snd_pcm_t
-#undef assert
-
-static int snd_pcm_lib_ioctl_reset(snd_pcm_substream_t *substream,
+static int snd_pcm_lib_ioctl_reset(struct snd_pcm_substream *substream,
void *arg)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long flags;
snd_pcm_stream_lock_irqsave(substream, flags);
if (snd_pcm_running(substream) &&
runtime->status->hw_ptr %= runtime->buffer_size;
else
runtime->status->hw_ptr = 0;
+ runtime->hw_ptr_jiffies = jiffies;
snd_pcm_stream_unlock_irqrestore(substream, flags);
return 0;
}
-static int snd_pcm_lib_ioctl_channel_info(snd_pcm_substream_t *substream,
+static int snd_pcm_lib_ioctl_channel_info(struct snd_pcm_substream *substream,
void *arg)
{
- snd_pcm_channel_info_t *info = arg;
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_channel_info *info = arg;
+ struct snd_pcm_runtime *runtime = substream->runtime;
int width;
if (!(runtime->info & SNDRV_PCM_INFO_MMAP)) {
info->offset = -1;
*
* Returns zero if successful, or a negative error code on failure.
*/
-int snd_pcm_lib_ioctl(snd_pcm_substream_t *substream,
+int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
switch (cmd) {
return -ENXIO;
}
-/*
- * Conditions
- */
-
-static void snd_pcm_system_tick_set(snd_pcm_substream_t *substream,
- unsigned long ticks)
-{
- snd_pcm_runtime_t *runtime = substream->runtime;
- if (ticks == 0)
- del_timer(&runtime->tick_timer);
- else {
- ticks += (1000000 / HZ) - 1;
- ticks /= (1000000 / HZ);
- mod_timer(&runtime->tick_timer, jiffies + ticks);
- }
-}
-
-/* Temporary alias */
-void snd_pcm_tick_set(snd_pcm_substream_t *substream, unsigned long ticks)
-{
- snd_pcm_system_tick_set(substream, ticks);
-}
-
-void snd_pcm_tick_prepare(snd_pcm_substream_t *substream)
-{
- snd_pcm_runtime_t *runtime = substream->runtime;
- snd_pcm_uframes_t frames = ULONG_MAX;
- snd_pcm_uframes_t avail, dist;
- unsigned int ticks;
- u_int64_t n;
- u_int32_t r;
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- if (runtime->silence_size >= runtime->boundary) {
- frames = 1;
- } else if (runtime->silence_size > 0 &&
- runtime->silence_filled < runtime->buffer_size) {
- snd_pcm_sframes_t noise_dist;
- noise_dist = snd_pcm_playback_hw_avail(runtime) + runtime->silence_filled;
- snd_assert(noise_dist <= (snd_pcm_sframes_t)runtime->silence_threshold, );
- frames = noise_dist - runtime->silence_threshold;
- }
- avail = snd_pcm_playback_avail(runtime);
- } else {
- avail = snd_pcm_capture_avail(runtime);
- }
- if (avail < runtime->control->avail_min) {
- snd_pcm_sframes_t n = runtime->control->avail_min - avail;
- if (n > 0 && frames > (snd_pcm_uframes_t)n)
- frames = n;
- }
- if (avail < runtime->buffer_size) {
- snd_pcm_sframes_t n = runtime->buffer_size - avail;
- if (n > 0 && frames > (snd_pcm_uframes_t)n)
- frames = n;
- }
- if (frames == ULONG_MAX) {
- snd_pcm_tick_set(substream, 0);
- return;
- }
- dist = runtime->status->hw_ptr - runtime->hw_ptr_base;
- /* Distance to next interrupt */
- dist = runtime->period_size - dist % runtime->period_size;
- if (dist <= frames) {
- snd_pcm_tick_set(substream, 0);
- return;
- }
- /* the base time is us */
- n = frames;
- n *= 1000000;
- div64_32(&n, runtime->tick_time * runtime->rate, &r);
- ticks = n + (r > 0 ? 1 : 0);
- if (ticks < runtime->sleep_min)
- ticks = runtime->sleep_min;
- snd_pcm_tick_set(substream, (unsigned long) ticks);
-}
-
-void snd_pcm_tick_elapsed(snd_pcm_substream_t *substream)
-{
- snd_pcm_runtime_t *runtime;
- unsigned long flags;
-
- snd_assert(substream != NULL, return);
- runtime = substream->runtime;
- snd_assert(runtime != NULL, return);
-
- snd_pcm_stream_lock_irqsave(substream, flags);
- if (!snd_pcm_running(substream) ||
- snd_pcm_update_hw_ptr(substream) < 0)
- goto _end;
- if (runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
- _end:
- snd_pcm_stream_unlock_irqrestore(substream, flags);
-}
+EXPORT_SYMBOL(snd_pcm_lib_ioctl);
/**
* snd_pcm_period_elapsed - update the pcm status for the next period
*
* This function is called from the interrupt handler when the
* PCM has processed the period size. It will update the current
- * pointer, set up the tick, wake up sleepers, etc.
+ * pointer, wake up sleepers, etc.
*
* Even if more than one periods have elapsed since the last call, you
* have to call this only once.
*/
-void snd_pcm_period_elapsed(snd_pcm_substream_t *substream)
+void snd_pcm_period_elapsed(struct snd_pcm_substream *substream)
{
- snd_pcm_runtime_t *runtime;
+ struct snd_pcm_runtime *runtime;
unsigned long flags;
- snd_assert(substream != NULL, return);
+ if (PCM_RUNTIME_CHECK(substream))
+ return;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return);
if (runtime->transfer_ack_begin)
runtime->transfer_ack_begin(substream);
if (substream->timer_running)
snd_timer_interrupt(substream->timer, 1);
- if (runtime->sleep_min)
- snd_pcm_tick_prepare(substream);
_end:
snd_pcm_stream_unlock_irqrestore(substream, flags);
if (runtime->transfer_ack_end)
kill_fasync(&runtime->fasync, SIGIO, POLL_IN);
}
-static int snd_pcm_lib_write_transfer(snd_pcm_substream_t *substream,
+EXPORT_SYMBOL(snd_pcm_period_elapsed);
+
+/*
+ * Wait until avail_min data becomes available
+ * Returns a negative error code if any error occurs during operation.
+ * The available space is stored on availp. When err = 0 and avail = 0
+ * on the capture stream, it indicates the stream is in DRAINING state.
+ */
+static int wait_for_avail_min(struct snd_pcm_substream *substream,
+ snd_pcm_uframes_t *availp)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
+ wait_queue_t wait;
+ int err = 0;
+ snd_pcm_uframes_t avail = 0;
+ long tout;
+
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&runtime->sleep, &wait);
+ for (;;) {
+ if (signal_pending(current)) {
+ err = -ERESTARTSYS;
+ break;
+ }
+ set_current_state(TASK_INTERRUPTIBLE);
+ snd_pcm_stream_unlock_irq(substream);
+ tout = schedule_timeout(msecs_to_jiffies(10000));
+ snd_pcm_stream_lock_irq(substream);
+ switch (runtime->status->state) {
+ case SNDRV_PCM_STATE_SUSPENDED:
+ err = -ESTRPIPE;
+ goto _endloop;
+ case SNDRV_PCM_STATE_XRUN:
+ err = -EPIPE;
+ goto _endloop;
+ case SNDRV_PCM_STATE_DRAINING:
+ if (is_playback)
+ err = -EPIPE;
+ else
+ avail = 0; /* indicate draining */
+ goto _endloop;
+ case SNDRV_PCM_STATE_OPEN:
+ case SNDRV_PCM_STATE_SETUP:
+ case SNDRV_PCM_STATE_DISCONNECTED:
+ err = -EBADFD;
+ goto _endloop;
+ }
+ if (!tout) {
+ snd_printd("%s write error (DMA or IRQ trouble?)\n",
+ is_playback ? "playback" : "capture");
+ err = -EIO;
+ break;
+ }
+ if (is_playback)
+ avail = snd_pcm_playback_avail(runtime);
+ else
+ avail = snd_pcm_capture_avail(runtime);
+ if (avail >= runtime->control->avail_min)
+ break;
+ }
+ _endloop:
+ remove_wait_queue(&runtime->sleep, &wait);
+ *availp = avail;
+ return err;
+}
+
+static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream,
unsigned int hwoff,
unsigned long data, unsigned int off,
snd_pcm_uframes_t frames)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
int err;
char __user *buf = (char __user *) data + frames_to_bytes(runtime, off);
if (substream->ops->copy) {
return err;
} else {
char *hwbuf = runtime->dma_area + frames_to_bytes(runtime, hwoff);
- snd_assert(runtime->dma_area, return -EFAULT);
if (copy_from_user(hwbuf, buf, frames_to_bytes(runtime, frames)))
return -EFAULT;
}
return 0;
}
-typedef int (*transfer_f)(snd_pcm_substream_t *substream, unsigned int hwoff,
+typedef int (*transfer_f)(struct snd_pcm_substream *substream, unsigned int hwoff,
unsigned long data, unsigned int off,
snd_pcm_uframes_t size);
-static snd_pcm_sframes_t snd_pcm_lib_write1(snd_pcm_substream_t *substream,
+static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream,
unsigned long data,
snd_pcm_uframes_t size,
int nonblock,
transfer_f transfer)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t xfer = 0;
snd_pcm_uframes_t offset = 0;
int err = 0;
if (size == 0)
return 0;
- if (size > runtime->xfer_align)
- size -= size % runtime->xfer_align;
snd_pcm_stream_lock_irq(substream);
switch (runtime->status->state) {
snd_pcm_uframes_t frames, appl_ptr, appl_ofs;
snd_pcm_uframes_t avail;
snd_pcm_uframes_t cont;
- if (runtime->sleep_min == 0 && runtime->status->state == SNDRV_PCM_STATE_RUNNING)
+ if (runtime->status->state == SNDRV_PCM_STATE_RUNNING)
snd_pcm_update_hw_ptr(substream);
avail = snd_pcm_playback_avail(runtime);
- if (((avail < runtime->control->avail_min && size > avail) ||
- (size >= runtime->xfer_align && avail < runtime->xfer_align))) {
- wait_queue_t wait;
- enum { READY, SIGNALED, ERROR, SUSPENDED, EXPIRED } state;
- long tout;
-
+ if (!avail) {
if (nonblock) {
err = -EAGAIN;
goto _end_unlock;
}
-
- init_waitqueue_entry(&wait, current);
- add_wait_queue(&runtime->sleep, &wait);
- while (1) {
- if (signal_pending(current)) {
- state = SIGNALED;
- break;
- }
- set_current_state(TASK_INTERRUPTIBLE);
- snd_pcm_stream_unlock_irq(substream);
- tout = schedule_timeout(10 * HZ);
- snd_pcm_stream_lock_irq(substream);
- if (tout == 0) {
- if (runtime->status->state != SNDRV_PCM_STATE_PREPARED &&
- runtime->status->state != SNDRV_PCM_STATE_PAUSED) {
- state = runtime->status->state == SNDRV_PCM_STATE_SUSPENDED ? SUSPENDED : EXPIRED;
- break;
- }
- }
- switch (runtime->status->state) {
- case SNDRV_PCM_STATE_XRUN:
- case SNDRV_PCM_STATE_DRAINING:
- state = ERROR;
- goto _end_loop;
- case SNDRV_PCM_STATE_SUSPENDED:
- state = SUSPENDED;
- goto _end_loop;
- default:
- break;
- }
- avail = snd_pcm_playback_avail(runtime);
- if (avail >= runtime->control->avail_min) {
- state = READY;
- break;
- }
- }
- _end_loop:
- remove_wait_queue(&runtime->sleep, &wait);
-
- switch (state) {
- case ERROR:
- err = -EPIPE;
- goto _end_unlock;
- case SUSPENDED:
- err = -ESTRPIPE;
- goto _end_unlock;
- case SIGNALED:
- err = -ERESTARTSYS;
- goto _end_unlock;
- case EXPIRED:
- snd_printd("playback write error (DMA or IRQ trouble?)\n");
- err = -EIO;
+ err = wait_for_avail_min(substream, &avail);
+ if (err < 0)
goto _end_unlock;
- default:
- break;
- }
}
- if (avail > runtime->xfer_align)
- avail -= avail % runtime->xfer_align;
frames = size > avail ? avail : size;
cont = runtime->buffer_size - runtime->control->appl_ptr % runtime->buffer_size;
if (frames > cont)
frames = cont;
- snd_assert(frames != 0, snd_pcm_stream_unlock_irq(substream); return -EINVAL);
+ if (snd_BUG_ON(!frames)) {
+ snd_pcm_stream_unlock_irq(substream);
+ return -EINVAL;
+ }
appl_ptr = runtime->control->appl_ptr;
appl_ofs = appl_ptr % runtime->buffer_size;
snd_pcm_stream_unlock_irq(substream);
if (err < 0)
goto _end_unlock;
}
- if (runtime->sleep_min &&
- runtime->status->state == SNDRV_PCM_STATE_RUNNING)
- snd_pcm_tick_prepare(substream);
}
_end_unlock:
snd_pcm_stream_unlock_irq(substream);
return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;
}
-snd_pcm_sframes_t snd_pcm_lib_write(snd_pcm_substream_t *substream, const void __user *buf, snd_pcm_uframes_t size)
+/* sanity-check for read/write methods */
+static int pcm_sanity_check(struct snd_pcm_substream *substream)
{
- snd_pcm_runtime_t *runtime;
- int nonblock;
-
- snd_assert(substream != NULL, return -ENXIO);
+ struct snd_pcm_runtime *runtime;
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
- snd_assert(substream->ops->copy != NULL || runtime->dma_area != NULL, return -EINVAL);
+ if (snd_BUG_ON(!substream->ops->copy && !runtime->dma_area))
+ return -EINVAL;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
+ return 0;
+}
- 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) {
- snd_pcm_oss_setup_t *setup = substream->oss.setup;
- if (setup != NULL) {
- if (setup->nonblock)
- nonblock = 1;
- else if (setup->block)
- nonblock = 0;
- }
- }
-#endif
+snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const void __user *buf, snd_pcm_uframes_t size)
+{
+ struct snd_pcm_runtime *runtime;
+ int nonblock;
+ int err;
+
+ err = pcm_sanity_check(substream);
+ if (err < 0)
+ return err;
+ runtime = substream->runtime;
+ nonblock = !!(substream->f_flags & O_NONBLOCK);
if (runtime->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED &&
runtime->channels > 1)
snd_pcm_lib_write_transfer);
}
-static int snd_pcm_lib_writev_transfer(snd_pcm_substream_t *substream,
+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,
snd_pcm_uframes_t frames)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
int err;
void __user **bufs = (void __user **)data;
int channels = runtime->channels;
int c;
if (substream->ops->copy) {
- snd_assert(substream->ops->silence != NULL, return -EINVAL);
+ if (snd_BUG_ON(!substream->ops->silence))
+ return -EINVAL;
for (c = 0; c < channels; ++c, ++bufs) {
if (*bufs == NULL) {
if ((err = substream->ops->silence(substream, c, hwoff, frames)) < 0)
} else {
/* default transfer behaviour */
size_t dma_csize = runtime->dma_bytes / channels;
- snd_assert(runtime->dma_area, return -EFAULT);
for (c = 0; c < channels; ++c, ++bufs) {
char *hwbuf = runtime->dma_area + (c * dma_csize) + samples_to_bytes(runtime, hwoff);
if (*bufs == NULL) {
return 0;
}
-snd_pcm_sframes_t snd_pcm_lib_writev(snd_pcm_substream_t *substream,
+snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream,
void __user **bufs,
snd_pcm_uframes_t frames)
{
- snd_pcm_runtime_t *runtime;
+ struct snd_pcm_runtime *runtime;
int nonblock;
+ int err;
- snd_assert(substream != NULL, return -ENXIO);
+ err = pcm_sanity_check(substream);
+ if (err < 0)
+ return err;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
- snd_assert(substream->ops->copy != NULL || runtime->dma_area != NULL, return -EINVAL);
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
- return -EBADFD;
-
- 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) {
- snd_pcm_oss_setup_t *setup = substream->oss.setup;
- if (setup != NULL) {
- if (setup->nonblock)
- nonblock = 1;
- else if (setup->block)
- nonblock = 0;
- }
- }
-#endif
+ nonblock = !!(substream->f_flags & O_NONBLOCK);
if (runtime->access != SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
return -EINVAL;
nonblock, snd_pcm_lib_writev_transfer);
}
-static int snd_pcm_lib_read_transfer(snd_pcm_substream_t *substream,
+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,
snd_pcm_uframes_t frames)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
int err;
char __user *buf = (char __user *) data + frames_to_bytes(runtime, off);
if (substream->ops->copy) {
return err;
} else {
char *hwbuf = runtime->dma_area + frames_to_bytes(runtime, hwoff);
- snd_assert(runtime->dma_area, return -EFAULT);
if (copy_to_user(buf, hwbuf, frames_to_bytes(runtime, frames)))
return -EFAULT;
}
return 0;
}
-static snd_pcm_sframes_t snd_pcm_lib_read1(snd_pcm_substream_t *substream,
+static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,
unsigned long data,
snd_pcm_uframes_t size,
int nonblock,
transfer_f transfer)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t xfer = 0;
snd_pcm_uframes_t offset = 0;
int err = 0;
if (size == 0)
return 0;
- if (size > runtime->xfer_align)
- size -= size % runtime->xfer_align;
snd_pcm_stream_lock_irq(substream);
switch (runtime->status->state) {
snd_pcm_uframes_t frames, appl_ptr, appl_ofs;
snd_pcm_uframes_t avail;
snd_pcm_uframes_t cont;
- if (runtime->sleep_min == 0 && runtime->status->state == SNDRV_PCM_STATE_RUNNING)
+ if (runtime->status->state == SNDRV_PCM_STATE_RUNNING)
snd_pcm_update_hw_ptr(substream);
- __draining:
avail = snd_pcm_capture_avail(runtime);
- if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
- if (avail < runtime->xfer_align) {
- err = -EPIPE;
+ if (!avail) {
+ if (runtime->status->state ==
+ SNDRV_PCM_STATE_DRAINING) {
+ snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
goto _end_unlock;
}
- } else if ((avail < runtime->control->avail_min && size > avail) ||
- (size >= runtime->xfer_align && avail < runtime->xfer_align)) {
- wait_queue_t wait;
- enum { READY, SIGNALED, ERROR, SUSPENDED, EXPIRED } state;
- long tout;
-
if (nonblock) {
err = -EAGAIN;
goto _end_unlock;
}
-
- init_waitqueue_entry(&wait, current);
- add_wait_queue(&runtime->sleep, &wait);
- while (1) {
- if (signal_pending(current)) {
- state = SIGNALED;
- break;
- }
- set_current_state(TASK_INTERRUPTIBLE);
- snd_pcm_stream_unlock_irq(substream);
- tout = schedule_timeout(10 * HZ);
- snd_pcm_stream_lock_irq(substream);
- if (tout == 0) {
- if (runtime->status->state != SNDRV_PCM_STATE_PREPARED &&
- runtime->status->state != SNDRV_PCM_STATE_PAUSED) {
- state = runtime->status->state == SNDRV_PCM_STATE_SUSPENDED ? SUSPENDED : EXPIRED;
- break;
- }
- }
- switch (runtime->status->state) {
- case SNDRV_PCM_STATE_XRUN:
- state = ERROR;
- goto _end_loop;
- case SNDRV_PCM_STATE_SUSPENDED:
- state = SUSPENDED;
- goto _end_loop;
- case SNDRV_PCM_STATE_DRAINING:
- goto __draining;
- default:
- break;
- }
- avail = snd_pcm_capture_avail(runtime);
- if (avail >= runtime->control->avail_min) {
- state = READY;
- break;
- }
- }
- _end_loop:
- remove_wait_queue(&runtime->sleep, &wait);
-
- switch (state) {
- case ERROR:
- err = -EPIPE;
- goto _end_unlock;
- case SUSPENDED:
- err = -ESTRPIPE;
- goto _end_unlock;
- case SIGNALED:
- err = -ERESTARTSYS;
- goto _end_unlock;
- case EXPIRED:
- snd_printd("capture read error (DMA or IRQ trouble?)\n");
- err = -EIO;
+ err = wait_for_avail_min(substream, &avail);
+ if (err < 0)
goto _end_unlock;
- default:
- break;
- }
+ if (!avail)
+ continue; /* draining */
}
- if (avail > runtime->xfer_align)
- avail -= avail % runtime->xfer_align;
frames = size > avail ? avail : size;
cont = runtime->buffer_size - runtime->control->appl_ptr % runtime->buffer_size;
if (frames > cont)
frames = cont;
- snd_assert(frames != 0, snd_pcm_stream_unlock_irq(substream); return -EINVAL);
+ if (snd_BUG_ON(!frames)) {
+ snd_pcm_stream_unlock_irq(substream);
+ return -EINVAL;
+ }
appl_ptr = runtime->control->appl_ptr;
appl_ofs = appl_ptr % runtime->buffer_size;
snd_pcm_stream_unlock_irq(substream);
offset += frames;
size -= frames;
xfer += frames;
- if (runtime->sleep_min &&
- runtime->status->state == SNDRV_PCM_STATE_RUNNING)
- snd_pcm_tick_prepare(substream);
}
_end_unlock:
snd_pcm_stream_unlock_irq(substream);
return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;
}
-snd_pcm_sframes_t snd_pcm_lib_read(snd_pcm_substream_t *substream, void __user *buf, snd_pcm_uframes_t size)
+snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, void __user *buf, snd_pcm_uframes_t size)
{
- snd_pcm_runtime_t *runtime;
+ struct snd_pcm_runtime *runtime;
int nonblock;
+ int err;
- snd_assert(substream != NULL, return -ENXIO);
+ err = pcm_sanity_check(substream);
+ if (err < 0)
+ return err;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
- snd_assert(substream->ops->copy != NULL || runtime->dma_area != NULL, return -EINVAL);
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
- return -EBADFD;
-
- 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) {
- snd_pcm_oss_setup_t *setup = substream->oss.setup;
- if (setup != NULL) {
- if (setup->nonblock)
- nonblock = 1;
- else if (setup->block)
- nonblock = 0;
- }
- }
-#endif
+ nonblock = !!(substream->f_flags & O_NONBLOCK);
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);
}
-static int snd_pcm_lib_readv_transfer(snd_pcm_substream_t *substream,
+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,
snd_pcm_uframes_t frames)
{
- snd_pcm_runtime_t *runtime = substream->runtime;
+ struct snd_pcm_runtime *runtime = substream->runtime;
int err;
void __user **bufs = (void __user **)data;
int channels = runtime->channels;
}
} else {
snd_pcm_uframes_t dma_csize = runtime->dma_bytes / channels;
- snd_assert(runtime->dma_area, return -EFAULT);
for (c = 0; c < channels; ++c, ++bufs) {
char *hwbuf;
char __user *buf;
return 0;
}
-snd_pcm_sframes_t snd_pcm_lib_readv(snd_pcm_substream_t *substream,
+snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream,
void __user **bufs,
snd_pcm_uframes_t frames)
{
- snd_pcm_runtime_t *runtime;
+ struct snd_pcm_runtime *runtime;
int nonblock;
+ int err;
- snd_assert(substream != NULL, return -ENXIO);
+ err = pcm_sanity_check(substream);
+ if (err < 0)
+ return err;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
- snd_assert(substream->ops->copy != NULL || runtime->dma_area != NULL, return -EINVAL);
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
- 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) {
- snd_pcm_oss_setup_t *setup = substream->oss.setup;
- if (setup != NULL) {
- if (setup->nonblock)
- nonblock = 1;
- else if (setup->block)
- nonblock = 0;
- }
- }
-#endif
-
+ nonblock = !!(substream->f_flags & O_NONBLOCK);
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_interval_muldivk);
-EXPORT_SYMBOL(snd_interval_mulkdiv);
-EXPORT_SYMBOL(snd_interval_div);
-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_params);
-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://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff