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-rw-r--r--android/gralloc_handle.h111
1 files changed, 111 insertions, 0 deletions
diff --git a/android/gralloc_handle.h b/android/gralloc_handle.h
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--- /dev/null
+++ b/android/gralloc_handle.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
+ * Copyright (C) 2010-2011 LunarG Inc.
+ * Copyright (C) 2016 Linaro, Ltd., Rob Herring <robh@kernel.org>
+ * Copyright (C) 2018 Collabora, Robert Foss <robert.foss@collabora.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __ANDROID_GRALLOC_HANDLE_H__
+#define __ANDROID_GRALLOC_HANDLE_H__
+
+#include <cutils/native_handle.h>
+#include <stdint.h>
+
+/* support users of drm_gralloc/gbm_gralloc */
+#define gralloc_gbm_handle_t gralloc_handle_t
+#define gralloc_drm_handle_t gralloc_handle_t
+
+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)
+
+static inline struct gralloc_handle_t *gralloc_handle(buffer_handle_t handle)
+{
+ return (struct gralloc_handle_t *)handle;
+}
+
+/**
+ * Create a buffer handle.
+ */
+static inline native_handle_t *gralloc_handle_create(int32_t width,
+ int32_t height,
+ int32_t hal_format,
+ int32_t usage)
+{
+ struct gralloc_handle_t *handle;
+ native_handle_t *nhandle = native_handle_create(GRALLOC_HANDLE_NUM_FDS,
+ GRALLOC_HANDLE_NUM_INTS);
+
+ if (!nhandle)
+ return NULL;
+
+ handle = gralloc_handle(nhandle);
+ handle->magic = GRALLOC_HANDLE_MAGIC;
+ handle->version = GRALLOC_HANDLE_VERSION;
+ handle->width = width;
+ handle->height = height;
+ handle->format = hal_format;
+ handle->usage = usage;
+ handle->prime_fd = -1;
+
+ return nhandle;
+}
+
+#endif