[sensors] Adding HAL API support for direct report mode

Added HAL function and constant definition for sensor direct
report mode. This new mode allows sensor hardware to communicate
with application directly via a lock-free queue based on shared
memory to achieve low latency and high report frequency.

Test: compiles and runs
Bug: 30985702
Change-Id: I79c73bcdcc45d43b5a236d65874e5071a589cecd

include/hardware/sensors-base.h

@@ -61,6 +61,11 @@ enum {
     SENSOR_FLAG_SUPPORTS_DATA_INJECTION = 16ull, // 0x10
     SENSOR_FLAG_DYNAMIC_SENSOR = 32ull, // 0x20
     SENSOR_FLAG_ADDITIONAL_INFO = 64ull, // 0x40
+    SENSOR_FLAG_DIRECT_CHANNEL_ASHMEM = 1024ull, // 0x400
+    SENSOR_FLAG_DIRECT_CHANNEL_GRALLOC = 2048ull, // 0x800
+    SENSOR_FLAG_MASK_REPORTING_MODE = 14ull, // 0xE
+    SENSOR_FLAG_MASK_DIRECT_REPORT = 896ull, // 0x380
+    SENSOR_FLAG_MASK_DIRECT_CHANNEL = 3072ull, // 0xC00
 };
 
 enum {
@@ -93,6 +98,22 @@ typedef enum {
     AINFO_DEBUGGING_START = 1073741824u, // 0x40000000
 } additional_info_type_t;
 
+typedef enum {
+    SENSOR_DIRECT_RATE_STOP = 0,
+    SENSOR_DIRECT_RATE_NORMAL = 1,
+    SENSOR_DIRECT_RATE_FAST = 2,
+    SENSOR_DIRECT_RATE_VERY_FAST = 3,
+} direct_rate_level_t;
+
+typedef enum {
+    SENSOR_DIRECT_MEM_TYPE_ASHMEM = 1,
+    SENSOR_DIRECT_MEM_TYPE_GRALLOC = 2,
+} direct_mem_type_t;
+
+typedef enum {
+    SENSOR_DIRECT_FMT_SENSORS_EVENT = 1,
+} direct_format_t;
+
 #ifdef __cplusplus
 }
 #endif