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src/util/u_gralloc/u_gralloc_libdrm.h

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+/*
+ * Copyright (C) 2010-2011 Chia-I Wu <[email protected]>
+ * Copyright (C) 2010-2011 LunarG Inc.
+ * Copyright (C) 2016 Linaro, Ltd., Rob Herring <[email protected]>
+ * Copyright (C) 2018 Collabora, Robert Foss <[email protected]>
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Copied from:
+ * https://gitlab.freedesktop.org/mesa/drm/-/blob/6abc164052e4902f67213baa279d743cf46227d4/android/gralloc_handle.h
+ */
+
+#ifndef __ANDROID_GRALLOC_HANDLE_H__
+#define __ANDROID_GRALLOC_HANDLE_H__
+
+#include <cutils/native_handle.h>
+#include <stdint.h>
+
+struct gralloc_handle_t {
+	native_handle_t base;
+
+	/* dma-buf file descriptor
+	 * Must be located first since, native_handle_t is allocated
+	 * using native_handle_create(), which allocates space for
+	 * sizeof(native_handle_t) + sizeof(int) * (numFds + numInts)
+	 * numFds = GRALLOC_HANDLE_NUM_FDS
+	 * numInts = GRALLOC_HANDLE_NUM_INTS
+	 * Where numFds represents the number of FDs and
+	 * numInts represents the space needed for the
+	 * remainder of this struct.
+	 * And the FDs are expected to be found first following
+	 * native_handle_t.
+	 */
+	int prime_fd;
+
+	/* api variables */
+	uint32_t magic; /* differentiate between allocator impls */
+	uint32_t version; /* api version */
+
+	uint32_t width; /* width of buffer in pixels */
+	uint32_t height; /* height of buffer in pixels */
+	uint32_t format; /* pixel format (Android) */
+	uint32_t usage; /* android libhardware usage flags */
+
+	uint32_t stride; /* the stride in bytes */
+	int data_owner; /* owner of data (for validation) */
+	uint64_t modifier __attribute__((aligned(8))); /* buffer modifiers */
+
+	union {
+		void *data; /* pointer to struct gralloc_gbm_bo_t */
+		uint64_t reserved;
+	} __attribute__((aligned(8)));
+};
+
+#define GRALLOC_HANDLE_VERSION 4
+#define GRALLOC_HANDLE_MAGIC 0x60585350
+#define GRALLOC_HANDLE_NUM_FDS 1
+#define GRALLOC_HANDLE_NUM_INTS (	\
+	((sizeof(struct gralloc_handle_t) - sizeof(native_handle_t))/sizeof(int))	\
+	 - GRALLOC_HANDLE_NUM_FDS)
+
+#endif /* __ANDROID_GRALLOC_HANDLE_H__ */