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1 #ifndef ANDROID_DVR_DISPLAY_TYPES_H_
2 #define ANDROID_DVR_DISPLAY_TYPES_H_
3 
4 #include <sys/cdefs.h>
5 
6 __BEGIN_DECLS
7 
8 // Define types used in pose buffer fields. These types have atomicity
9 // guarantees that are useful in lock-free shared memory ring buffers.
10 #ifdef __ARM_NEON
11 #include <arm_neon.h>
12 #else
13 #ifndef __FLOAT32X4T_86
14 #define __FLOAT32X4T_86
15 typedef float float32x4_t __attribute__((__vector_size__(16)));
16 typedef struct float32x4x4_t { float32x4_t val[4]; } float32x4x4_t;
17 #endif
18 #endif
19 
20 // VrFlinger display manager surface state snapshots per surface flags
21 // indicating what changed since the last snapshot.
22 enum {
23   // No changes.
24   DVR_SURFACE_UPDATE_FLAGS_NONE = 0,
25   // This surface is new.
26   DVR_SURFACE_UPDATE_FLAGS_NEW_SURFACE = (1 << 0),
27   // Buffer queues added/removed.
28   DVR_SURFACE_UPDATE_FLAGS_BUFFERS_CHANGED = (1 << 1),
29   // Visibility/z-order changed.
30   DVR_SURFACE_UPDATE_FLAGS_VISIBILITY_CHANGED = (1 << 2),
31   // Generic attributes changed.
32   DVR_SURFACE_UPDATE_FLAGS_ATTRIBUTES_CHANGED = (1 << 3),
33 };
34 
35 // Surface attribute keys. VrFlinger defines keys in the negative integer space.
36 // The compositor is free to use keys in the positive integer space for
37 // implementation-defined purposes.
38 enum {
39   // DIRECT: bool
40   // Determines whether a direct surface is created (compositor output) or an
41   // application surface. Defaults to false (application surface). May only be
42   // set to true by a process with either UID=root or UID validated with
43   // IsTrustedUid() (VrCore).
44   DVR_SURFACE_ATTRIBUTE_DIRECT = -3,
45   // Z_ORDER: int32_t
46   // Interpreted by VrFlinger only on direct surfaces to order the corresponding
47   // hardware layers. More positive values render on top of more negative
48   // values.
49   DVR_SURFACE_ATTRIBUTE_Z_ORDER = -2,
50   // VISIBLE: bool
51   // Interpreted by VrFlinger only on direct surfaces to determine whether a
52   // surface is assigned to a hardware layer or ignored.
53   DVR_SURFACE_ATTRIBUTE_VISIBLE = -1,
54   // INVALID
55   // Invalid key. No attributes should have this key.
56   DVR_SURFACE_ATTRIBUTE_INVALID = 0,
57   // FIRST_USER_KEY
58   // VrFlinger ingores any keys with this value or greater, passing them to the
59   // compositor through surface state query results.
60   DVR_SURFACE_ATTRIBUTE_FIRST_USER_KEY = 1,
61 };
62 
63 __END_DECLS
64 
65 #endif  // ANDROID_DVR_DISPLAY_TYPES_H_
66