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[ALSA] Use standard bitmap functions

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Modules: ALSA<-OSS emulation

Use standard bitmap functions instead of in-house ones.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2005-11-17 10:18:00 +01:00
committed by Jaroslav Kysela
parent 230b5c1a61
commit 47eaebfd31
5 changed files with 53 additions and 113 deletions
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78
sound/core/oss/pcm_plugin.h
View File

@@ -22,71 +22,11 @@
*
*/
#ifndef ATTRIBUTE_UNUSED
#define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
#endif
#include <linux/bitmap.h>
typedef unsigned int bitset_t;
static inline size_t bitset_size(int nbits)
static inline unsigned long *bitmap_alloc(unsigned int nbits)
{
return (nbits + sizeof(bitset_t) * 8 - 1) / (sizeof(bitset_t) * 8);
}
static inline bitset_t *bitset_alloc(int nbits)
{
return kcalloc(bitset_size(nbits), sizeof(bitset_t), GFP_KERNEL);
}
static inline void bitset_set(bitset_t *bitmap, unsigned int pos)
{
size_t bits = sizeof(*bitmap) * 8;
bitmap[pos / bits] |= 1 << (pos % bits);
}
static inline void bitset_reset(bitset_t *bitmap, unsigned int pos)
{
size_t bits = sizeof(*bitmap) * 8;
bitmap[pos / bits] &= ~(1 << (pos % bits));
}
static inline int bitset_get(bitset_t *bitmap, unsigned int pos)
{
size_t bits = sizeof(*bitmap) * 8;
return !!(bitmap[pos / bits] & (1 << (pos % bits)));
}
static inline void bitset_copy(bitset_t *dst, bitset_t *src, unsigned int nbits)
{
memcpy(dst, src, bitset_size(nbits) * sizeof(bitset_t));
}
static inline void bitset_and(bitset_t *dst, bitset_t *bs, unsigned int nbits)
{
bitset_t *end = dst + bitset_size(nbits);
while (dst < end)
*dst++ &= *bs++;
}
static inline void bitset_or(bitset_t *dst, bitset_t *bs, unsigned int nbits)
{
bitset_t *end = dst + bitset_size(nbits);
while (dst < end)
*dst++ |= *bs++;
}
static inline void bitset_zero(bitset_t *dst, unsigned int nbits)
{
bitset_t *end = dst + bitset_size(nbits);
while (dst < end)
*dst++ = 0;
}
static inline void bitset_one(bitset_t *dst, unsigned int nbits)
{
bitset_t *end = dst + bitset_size(nbits);
while (dst < end)
*dst++ = ~(bitset_t)0;
return kmalloc(BITS_TO_LONGS(nbits), GFP_KERNEL);
}
#define snd_pcm_plug_t snd_pcm_substream_t
@@ -131,11 +71,11 @@ struct _snd_pcm_plugin {
snd_pcm_uframes_t frames,
snd_pcm_plugin_channel_t **channels);
int (*src_channels_mask)(snd_pcm_plugin_t *plugin,
bitset_t *dst_vmask,
bitset_t **src_vmask);
unsigned long *dst_vmask,
unsigned long **src_vmask);
int (*dst_channels_mask)(snd_pcm_plugin_t *plugin,
bitset_t *src_vmask,
bitset_t **dst_vmask);
unsigned long *src_vmask,
unsigned long **dst_vmask);
snd_pcm_sframes_t (*transfer)(snd_pcm_plugin_t *plugin,
const snd_pcm_plugin_channel_t *src_channels,
snd_pcm_plugin_channel_t *dst_channels,
@@ -151,8 +91,8 @@ struct _snd_pcm_plugin {
char *buf;
snd_pcm_uframes_t buf_frames;
snd_pcm_plugin_channel_t *buf_channels;
bitset_t *src_vmask;
bitset_t *dst_vmask;
unsigned long *src_vmask;
unsigned long *dst_vmask;
char extra_data[0];
};