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author | Eino-Ville Talvala <etalvala@google.com> | 2012-04-17 08:57:44 -0700 |
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committer | Android (Google) Code Review <android-gerrit@google.com> | 2012-04-17 08:57:44 -0700 |
commit | 0c8e630ad66b30058009b9afa682b28b7f55b33a (patch) | |
tree | 4901b42df3add51b26ea856063ff3ea9397dd7d1 /include | |
parent | 19957a37a0f92257d8cccb5cbcb6e57a836d33ac (diff) | |
parent | fed0c0244b569e0bae4280af145a94ef3b1a1468 (diff) | |
download | hardware_libhardware-0c8e630ad66b30058009b9afa682b28b7f55b33a.zip hardware_libhardware-0c8e630ad66b30058009b9afa682b28b7f55b33a.tar.gz hardware_libhardware-0c8e630ad66b30058009b9afa682b28b7f55b33a.tar.bz2 |
Merge "Revise camera HAL 2, and add unit test skeleton."
Diffstat (limited to 'include')
-rw-r--r-- | include/hardware/camera2.h | 71 |
1 files changed, 52 insertions, 19 deletions
diff --git a/include/hardware/camera2.h b/include/hardware/camera2.h index 48f5c35..36f2a9e 100644 --- a/include/hardware/camera2.h +++ b/include/hardware/camera2.h @@ -41,6 +41,8 @@ __BEGIN_DECLS +struct camera2_device; + /** * Output image stream queue management */ @@ -53,6 +55,8 @@ typedef struct camera2_stream_ops { int (*cancel_buffer)(struct camera2_stream_ops* w, buffer_handle_t* buffer); int (*set_buffer_count)(struct camera2_stream_ops* w, int count); + int (*set_buffers_geometry)(struct camera2_stream_ops* pw, + int w, int h, int format); int (*set_crop)(struct camera2_stream_ops *w, int left, int top, int right, int bottom); // Timestamps are measured in nanoseconds, and must be comparable @@ -62,7 +66,6 @@ typedef struct camera2_stream_ops { // The timestamp must be the time at the start of image exposure. int (*set_timestamp)(struct camera2_stream_ops *w, int64_t timestamp); int (*set_usage)(struct camera2_stream_ops* w, int usage); - int (*set_swap_interval)(struct camera2_stream_ops *w, int interval); int (*get_min_undequeued_buffer_count)(const struct camera2_stream_ops *w, int *count); int (*lock_buffer)(struct camera2_stream_ops* w, @@ -72,6 +75,32 @@ typedef struct camera2_stream_ops { /** * Metadata queue management, used for requests sent to HAL module, and for * frames produced by the HAL. + * + * Queue protocol: + * + * The source holds the queue and its contents. At start, the queue is empty. + * + * 1. When the first metadata buffer is placed into the queue, the source must + * signal the destination by calling notify_queue_not_empty(). + * + * 2. After receiving notify_queue_not_empty, the destination must call + * dequeue() once it's ready to handle the next buffer. + * + * 3. Once the destination has processed a buffer, it should try to dequeue + * another buffer. If there are no more buffers available, dequeue() will + * return NULL. In this case, when a buffer becomes available, the source + * must call notify_queue_not_empty() again. If the destination receives a + * NULL return from dequeue, it does not need to query the queue again until + * a notify_queue_not_empty() call is received from the source. + * + * 4. If the destination calls buffer_count() and receives 0, this does not mean + * that the source will provide a notify_queue_not_empty() call. The source + * must only provide such a call after the destination has received a NULL + * from dequeue, or on initial startup. + * + * 5. The dequeue() call in response to notify_queue_not_empty() may be on the + * same thread as the notify_queue_not_empty() call. The source must not + * deadlock in that case. */ typedef struct camera2_metadata_queue_src_ops { @@ -99,6 +128,7 @@ typedef struct camera2_metadata_queue_dst_ops { * Notify destination that the queue is no longer empty */ int (*notify_queue_not_empty)(struct camera2_metadata_queue_dst_ops *); + } camera2_metadata_queue_dst_ops_t; /* Defined in camera_metadata.h */ @@ -153,32 +183,33 @@ enum { CAMERA2_MSG_ERROR_SERVER_FAULT = 0x0003 }; - -struct camera2_device; typedef struct camera2_device_ops { /** * Input request queue methods */ - int (*set_request_queue_ops)(struct camera2_device *, - camera2_metadata_queue_src_ops *request_queue_src_ops); + int (*set_request_queue_src_ops)(struct camera2_device *, + camera2_metadata_queue_src_ops *queue_src_ops); - camera2_metadata_queue_dst_ops_t *request_queue_dst_ops; + int (*get_request_queue_dst_ops)(struct camera2_device *, + camera2_metadata_queue_dst_ops **queue_dst_ops); /** * Input reprocessing queue methods */ int (*set_reprocess_queue_ops)(struct camera2_device *, - camera2_metadata_queue_src_ops *reprocess_queue_src_ops); + camera2_metadata_queue_src_ops *queue_src_ops); - camera2_metadata_queue_dst_ops_t *reprocess_queue_dst_ops; + int (*get_reprocess_queue_dst_ops)(struct camera2_device *, + camera2_metadata_queue_dst_ops **queue_dst_ops); /** * Output frame queue methods */ - int (*set_frame_queue_ops)(struct camera2_device *, - camera2_metadata_queue_dst_ops *frame_queue_dst_ops); + int (*set_frame_queue_dst_ops)(struct camera2_device *, + camera2_metadata_queue_dst_ops *queue_dst_ops); - camera2_metadata_queue_src_ops_t *frame_queue_src_ops; + int (*get_frame_queue_src_ops)(struct camera2_device *, + camera2_metadata_queue_src_ops **queue_dst_ops); /** * Pass in notification methods @@ -209,7 +240,8 @@ typedef struct camera2_device_ops { /** * Operations on the input reprocessing stream */ - camera2_stream_ops_t *reprocess_stream_ops; + int (*get_reprocess_stream_ops)(struct camera2_device *, + camera2_stream_ops_t **stream_ops); /** * Get the number of streams that can be simultaneously allocated. @@ -231,7 +263,7 @@ typedef struct camera2_device_ops { uint32_t stream_slot, uint32_t width, uint32_t height, - int format, + uint32_t format, camera2_stream_ops_t *camera2_stream_ops); /** @@ -244,6 +276,13 @@ typedef struct camera2_device_ops { uint32_t stream_slot); /** + * Get methods to query for vendor extension metadata tag infomation. May + * set ops to NULL if no vendor extension tags are defined. + */ + int (*get_metadata_vendor_tag_ops)(struct camera2_device*, + vendor_tag_query_ops_t **ops); + + /** * Release the camera hardware. Requests that are in flight will be * canceled. No further buffers will be pushed into any allocated pipelines * once this call returns. @@ -251,12 +290,6 @@ typedef struct camera2_device_ops { void (*release)(struct camera2_device *); /** - * Methods to query for vendor extension metadata tag infomation. May be NULL - * if no vendor extension tags are defined. - */ - vendor_tag_query_ops *camera_metadata_vendor_tag_ops; - - /** * Dump state of the camera hardware */ int (*dump)(struct camera2_device *, int fd); |