Revert "Revert "Add reprocess method, redefine gralloc ZSL usage flag""
Missing project ready to go.
This reverts commit 536148699beffcc4e6a2ced7c41fbbc3bcfa9886
Change-Id: I101343b443be6febe160685de6d72ddbf7e6aea5
diff --git a/include/hardware/camera2.h b/include/hardware/camera2.h
index 8209985..8b789ec 100644
--- a/include/hardware/camera2.h
+++ b/include/hardware/camera2.h
@@ -667,6 +667,48 @@
uint32_t *max_buffers);
/**
+ * allocate_reprocess_stream_from_stream:
+ *
+ * Allocate a new input stream for use, which will use the buffers allocated
+ * for an existing output stream. That is, after the HAL enqueues a buffer
+ * onto the output stream, it may see that same buffer handed to it from
+ * this input reprocessing stream. After the HAL releases the buffer back to
+ * the reprocessing stream, it will be returned to the output queue for
+ * reuse.
+ *
+ * Error conditions:
+ *
+ * - Using an output stream of unsuitable size/format for the basis of the
+ * reprocessing stream.
+ *
+ * - Attempting to allocatee too many reprocessing streams at once.
+ *
+ * Input parameters:
+ *
+ * - output_stream_id: The ID of an existing output stream which has
+ * a size and format suitable for reprocessing.
+ *
+ * - reprocess_stream_ops: A structure of function pointers for acquiring
+ * and releasing buffers for this stream. The underlying stream will use
+ * the same graphics buffer handles as the output stream uses.
+ *
+ * Output parameters:
+ *
+ * - stream_id: An unsigned integer identifying this stream. This value is
+ * used in incoming requests to identify the stream, and in releasing the
+ * stream. These ids are numbered separately from the input stream ids.
+ *
+ * The HAL client must always release the reprocessing stream before it
+ * releases the output stream it is based on.
+ *
+ */
+ int (*allocate_reprocess_stream_from_stream)(const struct camera2_device *,
+ uint32_t output_stream_id,
+ const camera2_stream_in_ops_t *reprocess_stream_ops,
+ // outputs
+ uint32_t *stream_id);
+
+ /**
* Release a reprocessing stream. Returns an error if called when
* get_in_progress_count is non-zero, or if the stream id is not
* valid.