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Merge branch 'topic/pcm-params' into for-next

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This commit is contained in:
Takashi Iwai 2014-12-30 16:42:07 +01:00
commit 240491e143
3 changed files with 56 additions and 59 deletions
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13
include/sound/pcm.h
View file

@ -94,9 +94,6 @@ struct snd_pcm_ops {
#define SNDRV_PCM_DEVICES 8
#endif
#define SNDRV_PCM_IOCTL1_FALSE ((void *)0)
#define SNDRV_PCM_IOCTL1_TRUE ((void *)1)
#define SNDRV_PCM_IOCTL1_RESET 0
#define SNDRV_PCM_IOCTL1_INFO 1
#define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2
@ -857,7 +854,7 @@ static inline unsigned int params_channels(const struct snd_pcm_hw_params *p)
}
/**
* params_channels - Get the sample rate from the hw params
* params_rate - Get the sample rate from the hw params
* @p: hw params
*/
static inline unsigned int params_rate(const struct snd_pcm_hw_params *p)
@ -866,7 +863,7 @@ static inline unsigned int params_rate(const struct snd_pcm_hw_params *p)
}
/**
* params_channels - Get the period size (in frames) from the hw params
* params_period_size - Get the period size (in frames) from the hw params
* @p: hw params
*/
static inline unsigned int params_period_size(const struct snd_pcm_hw_params *p)
@ -875,7 +872,7 @@ static inline unsigned int params_period_size(const struct snd_pcm_hw_params *p)
}
/**
* params_channels - Get the number of periods from the hw params
* params_periods - Get the number of periods from the hw params
* @p: hw params
*/
static inline unsigned int params_periods(const struct snd_pcm_hw_params *p)
@ -884,7 +881,7 @@ static inline unsigned int params_periods(const struct snd_pcm_hw_params *p)
}
/**
* params_channels - Get the buffer size (in frames) from the hw params
* params_buffer_size - Get the buffer size (in frames) from the hw params
* @p: hw params
*/
static inline unsigned int params_buffer_size(const struct snd_pcm_hw_params *p)
@ -893,7 +890,7 @@ static inline unsigned int params_buffer_size(const struct snd_pcm_hw_params *p)
}
/**
* params_channels - Get the buffer size (in bytes) from the hw params
* params_buffer_bytes - Get the buffer size (in bytes) from the hw params
* @p: hw params
*/
static inline unsigned int params_buffer_bytes(const struct snd_pcm_hw_params *p)

96
include/sound/pcm_params.h
View file

@ -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));
}

6
sound/core/oss/pcm_oss.c
View file

@ -719,7 +719,7 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
oss_buffer_size = snd_pcm_plug_client_size(substream,
snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, NULL)) * oss_frame_size;
oss_buffer_size = 1 << ld2(oss_buffer_size);
oss_buffer_size = rounddown_pow_of_two(oss_buffer_size);
if (atomic_read(&substream->mmap_count)) {
if (oss_buffer_size > runtime->oss.mmap_bytes)
oss_buffer_size = runtime->oss.mmap_bytes;
@ -755,14 +755,14 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
min_period_size = snd_pcm_plug_client_size(substream,
snd_pcm_hw_param_value_min(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
min_period_size *= oss_frame_size;
min_period_size = 1 << (ld2(min_period_size - 1) + 1);
min_period_size = roundup_pow_of_two(min_period_size);
if (oss_period_size < min_period_size)
oss_period_size = min_period_size;
max_period_size = snd_pcm_plug_client_size(substream,
snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, NULL));
max_period_size *= oss_frame_size;
max_period_size = 1 << ld2(max_period_size);
max_period_size = rounddown_pow_of_two(max_period_size);
if (oss_period_size > max_period_size)
oss_period_size = max_period_size;