summaryrefslogtreecommitdiff
path: root/include/sound/pcm_params.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/sound/pcm_params.h')
-rw-r--r--include/sound/pcm_params.h96
1 files changed, 48 insertions, 48 deletions
diff --git a/include/sound/pcm_params.h b/include/sound/pcm_params.h
index 6b1c78f05fab..3c45f3924ba7 100644
--- a/include/sound/pcm_params.h
+++ b/include/sound/pcm_params.h
@@ -38,31 +38,6 @@ int snd_pcm_hw_param_value(const struct snd_pcm_hw_params *params,
#define MASK_OFS(i) ((i) >> 5)
#define MASK_BIT(i) (1U << ((i) & 31))
-static inline unsigned int ld2(u_int32_t v)
-{
- unsigned r = 0;
-
- if (v >= 0x10000) {
- v >>= 16;
- r += 16;
- }
- if (v >= 0x100) {
- v >>= 8;
- r += 8;
- }
- if (v >= 0x10) {
- v >>= 4;
- r += 4;
- }
- if (v >= 4) {
- v >>= 2;
- r += 2;
- }
- if (v >= 2)
- r++;
- return r;
-}
-
static inline size_t snd_mask_sizeof(void)
{
return sizeof(struct snd_mask);
@@ -92,7 +67,7 @@ static inline unsigned int snd_mask_min(const struct snd_mask *mask)
int i;
for (i = 0; i < SNDRV_MASK_SIZE; i++) {
if (mask->bits[i])
- return ffs(mask->bits[i]) - 1 + (i << 5);
+ return __ffs(mask->bits[i]) + (i << 5);
}
return 0;
}
@@ -102,7 +77,7 @@ static inline unsigned int snd_mask_max(const struct snd_mask *mask)
int i;
for (i = SNDRV_MASK_SIZE - 1; i >= 0; i--) {
if (mask->bits[i])
- return ld2(mask->bits[i]) + (i << 5);
+ return __fls(mask->bits[i]) + (i << 5);
}
return 0;
}
@@ -325,43 +300,68 @@ static inline int snd_interval_eq(const struct snd_interval *i1, const struct sn
i1->max == i2->max && i1->openmax == i2->openmax;
}
-static inline unsigned int add(unsigned int a, unsigned int b)
+/**
+ * params_access - get the access type from the hw params
+ * @p: hw params
+ */
+static inline snd_pcm_access_t params_access(const struct snd_pcm_hw_params *p)
{
- if (a >= UINT_MAX - b)
- return UINT_MAX;
- return a + b;
+ return (__force snd_pcm_access_t)snd_mask_min(hw_param_mask_c(p,
+ SNDRV_PCM_HW_PARAM_ACCESS));
}
-static inline unsigned int sub(unsigned int a, unsigned int b)
+/**
+ * params_format - get the sample format from the hw params
+ * @p: hw params
+ */
+static inline snd_pcm_format_t params_format(const struct snd_pcm_hw_params *p)
{
- if (a > b)
- return a - b;
- return 0;
+ return (__force snd_pcm_format_t)snd_mask_min(hw_param_mask_c(p,
+ SNDRV_PCM_HW_PARAM_FORMAT));
}
-#define params_access(p) ((__force snd_pcm_access_t)\
- snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_ACCESS)))
-#define params_format(p) ((__force snd_pcm_format_t)\
- snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_FORMAT)))
-#define params_subformat(p) \
- snd_mask_min(hw_param_mask_c((p), SNDRV_PCM_HW_PARAM_SUBFORMAT))
+/**
+ * params_subformat - get the sample subformat from the hw params
+ * @p: hw params
+ */
+static inline snd_pcm_subformat_t
+params_subformat(const struct snd_pcm_hw_params *p)
+{
+ return (__force snd_pcm_subformat_t)snd_mask_min(hw_param_mask_c(p,
+ SNDRV_PCM_HW_PARAM_SUBFORMAT));
+}
+/**
+ * params_period_bytes - get the period size (in bytes) from the hw params
+ * @p: hw params
+ */
static inline unsigned int
params_period_bytes(const struct snd_pcm_hw_params *p)
{
- return (params_period_size(p) *
- snd_pcm_format_physical_width(params_format(p)) *
- params_channels(p)) / 8;
+ return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIOD_BYTES)->min;
}
-static inline int
-params_width(const struct snd_pcm_hw_params *p)
+/**
+ * params_width - get the number of bits of the sample format from the hw params
+ * @p: hw params
+ *
+ * This function returns the number of bits per sample that the selected sample
+ * format of the hw params has.
+ */
+static inline int params_width(const struct snd_pcm_hw_params *p)
{
return snd_pcm_format_width(params_format(p));
}
-static inline int
-params_physical_width(const struct snd_pcm_hw_params *p)
+/*
+ * params_physical_width - get the storage size of the sample format from the hw params
+ * @p: hw params
+ *
+ * This functions returns the number of bits per sample that the selected sample
+ * format of the hw params takes up in memory. This will be equal or larger than
+ * params_width().
+ */
+static inline int params_physical_width(const struct snd_pcm_hw_params *p)
{
return snd_pcm_format_physical_width(params_format(p));
}