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Diffstat (limited to '')
| -rw-r--r-- | android/gralloc_handle.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/android/gralloc_handle.h b/android/gralloc_handle.h new file mode 100644 index 0000000..d3d975e --- /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 |