summaryrefslogtreecommitdiffstats
path: root/sound/core/pcm_misc.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/core/pcm_misc.c')
-rw-r--r--sound/core/pcm_misc.c35
1 files changed, 20 insertions, 15 deletions
diff --git a/sound/core/pcm_misc.c b/sound/core/pcm_misc.c
index a6a541511534..257d412eac5d 100644
--- a/sound/core/pcm_misc.c
+++ b/sound/core/pcm_misc.c
@@ -42,6 +42,11 @@ struct pcm_format_data {
/* we do lots of calculations on snd_pcm_format_t; shut up sparse */
#define INT __force int
+static bool valid_format(snd_pcm_format_t format)
+{
+ return (INT)format >= 0 && (INT)format <= (INT)SNDRV_PCM_FORMAT_LAST;
+}
+
static const struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = {
[SNDRV_PCM_FORMAT_S8] = {
.width = 8, .phys = 8, .le = -1, .signd = 1,
@@ -259,7 +264,7 @@ static const struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] =
int snd_pcm_format_signed(snd_pcm_format_t format)
{
int val;
- if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
+ if (!valid_format(format))
return -EINVAL;
if ((val = pcm_formats[(INT)format].signd) < 0)
return -EINVAL;
@@ -307,7 +312,7 @@ EXPORT_SYMBOL(snd_pcm_format_linear);
int snd_pcm_format_little_endian(snd_pcm_format_t format)
{
int val;
- if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
+ if (!valid_format(format))
return -EINVAL;
if ((val = pcm_formats[(INT)format].le) < 0)
return -EINVAL;
@@ -343,7 +348,7 @@ EXPORT_SYMBOL(snd_pcm_format_big_endian);
int snd_pcm_format_width(snd_pcm_format_t format)
{
int val;
- if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
+ if (!valid_format(format))
return -EINVAL;
if ((val = pcm_formats[(INT)format].width) == 0)
return -EINVAL;
@@ -361,7 +366,7 @@ EXPORT_SYMBOL(snd_pcm_format_width);
int snd_pcm_format_physical_width(snd_pcm_format_t format)
{
int val;
- if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
+ if (!valid_format(format))
return -EINVAL;
if ((val = pcm_formats[(INT)format].phys) == 0)
return -EINVAL;
@@ -394,7 +399,7 @@ EXPORT_SYMBOL(snd_pcm_format_size);
*/
const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format)
{
- if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
+ if (!valid_format(format))
return NULL;
if (! pcm_formats[(INT)format].phys)
return NULL;
@@ -418,7 +423,7 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int
unsigned char *dst;
const unsigned char *pat;
- if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
+ if (!valid_format(format))
return -EINVAL;
if (samples == 0)
return 0;
@@ -474,32 +479,32 @@ int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int
EXPORT_SYMBOL(snd_pcm_format_set_silence);
/**
- * snd_pcm_limit_hw_rates - determine rate_min/rate_max fields
- * @runtime: the runtime instance
+ * snd_pcm_hw_limit_rates - determine rate_min/rate_max fields
+ * @hw: the pcm hw instance
*
* Determines the rate_min and rate_max fields from the rates bits of
- * the given runtime->hw.
+ * the given hw.
*
* Return: Zero if successful.
*/
-int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime)
+int snd_pcm_hw_limit_rates(struct snd_pcm_hardware *hw)
{
int i;
for (i = 0; i < (int)snd_pcm_known_rates.count; i++) {
- if (runtime->hw.rates & (1 << i)) {
- runtime->hw.rate_min = snd_pcm_known_rates.list[i];
+ if (hw->rates & (1 << i)) {
+ hw->rate_min = snd_pcm_known_rates.list[i];
break;
}
}
for (i = (int)snd_pcm_known_rates.count - 1; i >= 0; i--) {
- if (runtime->hw.rates & (1 << i)) {
- runtime->hw.rate_max = snd_pcm_known_rates.list[i];
+ if (hw->rates & (1 << i)) {
+ hw->rate_max = snd_pcm_known_rates.list[i];
break;
}
}
return 0;
}
-EXPORT_SYMBOL(snd_pcm_limit_hw_rates);
+EXPORT_SYMBOL(snd_pcm_hw_limit_rates);
/**
* snd_pcm_rate_to_rate_bit - converts sample rate to SNDRV_PCM_RATE_xxx bit