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Moved ring buffer pointers and added a mechanism to transfer them via shm

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This commit is contained in:
Jaroslav Kysela 2002-04-23 15:51:29 +00:00
parent f063381430
commit c941c548f8
26 changed files with 469 additions and 171 deletions
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18
include/aserver.h
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@ -47,12 +47,21 @@ typedef enum _snd_transport_type {
#define SND_PCM_IOCTL_ASYNC _IO ('A', 0xf6)
#define SND_PCM_IOCTL_CLOSE _IO ('A', 0xf7)
#define SND_PCM_IOCTL_POLL_DESCRIPTOR _IO ('A', 0xf8)
#define SND_PCM_IOCTL_HW_PTR_FD _IO ('A', 0xf9)
#define SND_PCM_IOCTL_APPL_PTR_FD _IO ('A', 0xfa)
typedef struct {
snd_pcm_uframes_t ptr;
int use_mmap;
off_t offset; /* for mmap */
int changed;
} snd_pcm_shm_rbptr_t;
typedef struct {
long result;
int cmd;
snd_pcm_uframes_t hw_ptr;
snd_pcm_uframes_t appl_ptr;
snd_pcm_shm_rbptr_t hw;
snd_pcm_shm_rbptr_t appl;
union {
struct {
int sig;
@ -80,6 +89,11 @@ typedef struct {
snd_pcm_uframes_t offset;
snd_pcm_uframes_t frames;
} mmap_commit;
struct {
char use_mmap;
int shmid;
off_t offset;
} rbptr;
} u;
char data[0];
} snd_pcm_shm_ctrl_t;