Inheritance of HAL object is performed by composing a child structure of a
single parent structure located at offset 0 followed by new data members
and function pointers in the child structure.
For example,
struct child {
struct parent common;
int a_data_member;
void (*a_method)(struct child *c, int v);
};
HAL code assumes this layout when accessing child structures given a pointer
to a parent structure such that users write code like the following...
void child_method(struct *parent, int v) {
struct child * c = (struct child*)parent;
// do stuff with c
}
Code above will break if a member is added before "common" in "struct child".
This change adds comments that describe the restriction on the location of
parent HAL objects within a derived HAL object. HAL objects that already
have comments that describe the required location of parent objects are not
modified.
Change-Id: Ibe4300275286ef275b2097534c84f1029d761d87
- Deprecates vendor tag specification in camera3 device.
- Moves vendor tag ops declaration to camera metadata library and
cleans up definitions.
- Updates the example HAL.
Change-Id: Ifb16bb0d4bbc896bc32d33dd150e7e174af57dad
This updates the camera module API to have vendor-specific tag support.
Vendor-specific metadata tags could be contained in static camera
characteristics, so we need a method of accessing vendor tag information
from the module level (and not just with a device open).
Bug: 10612133
Change-Id: I28e8c769f8112ff4f745f3f1b5472e8a718f1356
- Support a simple callback from camera HAL module to framework, to
indicate a change to module configuration or status.
- Add support for per-instance metadata to camera 2 device HAL.
Change-Id: I25699ff096c4f3578b9e54c7e6e60ce2449adc82
- High-level behavior is identical to device HAL 2.0
- Interface is cleaned up and simplified greatly
Change-Id: Ia867bbf9484be2256470f4acfab7fc3d47e408f4
Disallow modification to static characteristics structure, and clarify
ownership and lifetime of the structure.
Also update test code accordingly.
Bug: 6243944
Change-Id: I6921d6889937212867efb99aa3881ab3ffc4f6f9
Needs a third change that's not yet done with review.
This reverts commit c9ec8a656b59912f496880d3a63c0decd490f09d
Change-Id: Ic3e465e1308cbf107a250ec17b73a59a35e52f9f
Disallow modification to static characteristics structure, and clarify
ownership and lifetime of the structure.
Also update test code accordingly.
Bug: 6243944
Change-Id: Ib8de5e9d6580187b21a5ae9a28a3d24f1d083f7b
These constants should be used by HAL implementations to indicate
which versions of the module and device APIs they support.
Change-Id: I4b6eae278481545694e6a1827833b5958c26720c
