blob: 87fdf31b2bd10bbc0bbf93418558a0baecb391cf [file] [log] [blame]
#include <stdint.h>
#include <sys/cdefs.h>
typedef struct DvrVSyncClient DvrVSyncClient;
// Represents a vsync sample. The size of this struct is 32 bytes.
typedef struct __attribute__((packed, aligned(16))) DvrVsync {
// The timestamp for the last vsync in nanoseconds.
uint64_t vsync_timestamp_ns;
// The index of the last vsync.
uint32_t vsync_count;
// Scan out for the left eye = vsync_timestamp_ns + vsync_left_eye_offset_ns.
int32_t vsync_left_eye_offset_ns;
// Scan out for the right eye = vsync_timestamp_ns + vsync_right_eye_offset_ns
int32_t vsync_right_eye_offset_ns;
// The period of a vsync in nanoseconds.
uint32_t vsync_period_ns;
// Padding to 32 bytes so the size is a multiple of 16.
uint8_t padding[8];
} DvrVsync;
// Creates a new client to the system vsync service.
int dvrVSyncClientCreate(DvrVSyncClient** client_out);
// Destroys the vsync client.
void dvrVSyncClientDestroy(DvrVSyncClient* client);
// Get the estimated timestamp of the next GPU lens warp preemption event in/
// ns. Also returns the corresponding vsync count that the next lens warp
// operation will target.
int dvrVSyncClientGetSchedInfo(DvrVSyncClient* client, int64_t* vsync_period_ns,
int64_t* next_timestamp_ns,
uint32_t* next_vsync_count);