summaryrefslogtreecommitdiffstats
path: root/include/sound/pcm.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/sound/pcm.h')
-rw-r--r--include/sound/pcm.h76
1 files changed, 2 insertions, 74 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index c172968..2389352 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -98,6 +98,7 @@ struct snd_pcm_ops {
#define SNDRV_PCM_IOCTL1_INFO 1
#define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2
#define SNDRV_PCM_IOCTL1_GSTATE 3
+#define SNDRV_PCM_IOCTL1_FIFO_SIZE 4
#define SNDRV_PCM_TRIGGER_STOP 0
#define SNDRV_PCM_TRIGGER_START 1
@@ -270,6 +271,7 @@ struct snd_pcm_runtime {
snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */
snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time */
unsigned long hw_ptr_jiffies; /* Time when hw_ptr is updated */
+ snd_pcm_sframes_t delay; /* extra delay; typically FIFO size */
/* -- HW params -- */
snd_pcm_access_t access; /* access mode */
@@ -486,80 +488,6 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream);
void snd_pcm_vma_notify_data(void *client, void *data);
int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area);
-#if BITS_PER_LONG >= 64
-
-static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
-{
- *rem = *n % div;
- *n /= div;
-}
-
-#elif defined(i386)
-
-static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
-{
- u_int32_t low, high;
- low = *n & 0xffffffff;
- high = *n >> 32;
- if (high) {
- u_int32_t high1 = high % div;
- high /= div;
- asm("divl %2":"=a" (low), "=d" (*rem):"rm" (div), "a" (low), "d" (high1));
- *n = (u_int64_t)high << 32 | low;
- } else {
- *n = low / div;
- *rem = low % div;
- }
-}
-#else
-
-static inline void divl(u_int32_t high, u_int32_t low,
- u_int32_t div,
- u_int32_t *q, u_int32_t *r)
-{
- u_int64_t n = (u_int64_t)high << 32 | low;
- u_int64_t d = (u_int64_t)div << 31;
- u_int32_t q1 = 0;
- int c = 32;
- while (n > 0xffffffffU) {
- q1 <<= 1;
- if (n >= d) {
- n -= d;
- q1 |= 1;
- }
- d >>= 1;
- c--;
- }
- q1 <<= c;
- if (n) {
- low = n;
- *q = q1 | (low / div);
- *r = low % div;
- } else {
- *r = 0;
- *q = q1;
- }
- return;
-}
-
-static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
-{
- u_int32_t low, high;
- low = *n & 0xffffffff;
- high = *n >> 32;
- if (high) {
- u_int32_t high1 = high % div;
- u_int32_t low1 = low;
- high /= div;
- divl(high1, low1, div, &low, rem);
- *n = (u_int64_t)high << 32 | low;
- } else {
- *n = low / div;
- *rem = low % div;
- }
-}
-#endif
-
/*
* PCM library
*/
OpenPOWER on IntegriCloud