--- /dev/null
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @file hardware_buffer.h
+ * @brief API for native hardware buffers.
+ */
+/**
+ * @defgroup AHardwareBuffer Native Hardware Buffer
+ *
+ * AHardwareBuffer objects represent chunks of memory that can be
+ * accessed by various hardware components in the system. It can be
+ * easily converted to the Java counterpart
+ * android.hardware.HardwareBuffer and passed between processes using
+ * Binder. All operations involving AHardwareBuffer and HardwareBuffer
+ * are zero-copy, i.e., passing AHardwareBuffer to another process
+ * creates a shared view of the same region of memory.
+ *
+ * AHardwareBuffers can be bound to EGL/OpenGL and Vulkan primitives.
+ * For EGL, use the extension function eglGetNativeClientBufferANDROID
+ * to obtain an EGLClientBuffer and pass it directly to
+ * eglCreateImageKHR. Refer to the EGL extensions
+ * EGL_ANDROID_get_native_client_buffer and
+ * EGL_ANDROID_image_native_buffer for more information. In Vulkan,
+ * the contents of the AHardwareBuffer can be accessed as external
+ * memory. See the VK_ANDROID_external_memory_android_hardware_buffer
+ * extension for details.
+ *
+ * @{
+ */
+
+#ifndef ANDROID_HARDWARE_BUFFER_H
+#define ANDROID_HARDWARE_BUFFER_H
+
+#include <inttypes.h>
+
+#include <sys/cdefs.h>
+
+#include <android/rect.h>
+
+__BEGIN_DECLS
+
+/**
+ * Buffer pixel formats.
+ */
+enum AHardwareBuffer_Format {
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_R8G8B8A8_UNORM
+ * OpenGL ES: GL_RGBA8
+ */
+ AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM = 1,
+
+ /**
+ * 32 bits per pixel, 8 bits per channel format where alpha values are
+ * ignored (always opaque).
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_R8G8B8A8_UNORM
+ * OpenGL ES: GL_RGB8
+ */
+ AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM = 2,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_R8G8B8_UNORM
+ * OpenGL ES: GL_RGB8
+ */
+ AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM = 3,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_R5G6B5_UNORM_PACK16
+ * OpenGL ES: GL_RGB565
+ */
+ AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM = 4,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_R16G16B16A16_SFLOAT
+ * OpenGL ES: GL_RGBA16F
+ */
+ AHARDWAREBUFFER_FORMAT_R16G16B16A16_FLOAT = 0x16,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_A2B10G10R10_UNORM_PACK32
+ * OpenGL ES: GL_RGB10_A2
+ */
+ AHARDWAREBUFFER_FORMAT_R10G10B10A2_UNORM = 0x2b,
+
+ /**
+ * Opaque binary blob format.
+ * Must have height 1 and one layer, with width equal to the buffer
+ * size in bytes. Corresponds to Vulkan buffers and OpenGL buffer
+ * objects. Can be bound to the latter using GL_EXT_external_buffer.
+ */
+ AHARDWAREBUFFER_FORMAT_BLOB = 0x21,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_D16_UNORM
+ * OpenGL ES: GL_DEPTH_COMPONENT16
+ */
+ AHARDWAREBUFFER_FORMAT_D16_UNORM = 0x30,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_X8_D24_UNORM_PACK32
+ * OpenGL ES: GL_DEPTH_COMPONENT24
+ */
+ AHARDWAREBUFFER_FORMAT_D24_UNORM = 0x31,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_D24_UNORM_S8_UINT
+ * OpenGL ES: GL_DEPTH24_STENCIL8
+ */
+ AHARDWAREBUFFER_FORMAT_D24_UNORM_S8_UINT = 0x32,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_D32_SFLOAT
+ * OpenGL ES: GL_DEPTH_COMPONENT32F
+ */
+ AHARDWAREBUFFER_FORMAT_D32_FLOAT = 0x33,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_D32_SFLOAT_S8_UINT
+ * OpenGL ES: GL_DEPTH32F_STENCIL8
+ */
+ AHARDWAREBUFFER_FORMAT_D32_FLOAT_S8_UINT = 0x34,
+
+ /**
+ * Corresponding formats:
+ * Vulkan: VK_FORMAT_S8_UINT
+ * OpenGL ES: GL_STENCIL_INDEX8
+ */
+ AHARDWAREBUFFER_FORMAT_S8_UINT = 0x35,
+
+ /**
+ * YUV 420 888 format.
+ * Must have an even width and height. Can be accessed in OpenGL
+ * shaders through an external sampler. Does not support mip-maps
+ * cube-maps or multi-layered textures.
+ */
+ AHARDWAREBUFFER_FORMAT_Y8Cb8Cr8_420 = 0x23,
+};
+
+/**
+ * Buffer usage flags, specifying how the buffer will be accessed.
+ */
+enum AHardwareBuffer_UsageFlags {
+ /// The buffer will never be locked for direct CPU reads using the
+ /// AHardwareBuffer_lock() function. Note that reading the buffer
+ /// using OpenGL or Vulkan functions or memory mappings is still
+ /// allowed.
+ AHARDWAREBUFFER_USAGE_CPU_READ_NEVER = 0UL,
+ /// The buffer will sometimes be locked for direct CPU reads using
+ /// the AHardwareBuffer_lock() function. Note that reading the
+ /// buffer using OpenGL or Vulkan functions or memory mappings
+ /// does not require the presence of this flag.
+ AHARDWAREBUFFER_USAGE_CPU_READ_RARELY = 2UL,
+ /// The buffer will often be locked for direct CPU reads using
+ /// the AHardwareBuffer_lock() function. Note that reading the
+ /// buffer using OpenGL or Vulkan functions or memory mappings
+ /// does not require the presence of this flag.
+ AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN = 3UL,
+ /// CPU read value mask.
+ AHARDWAREBUFFER_USAGE_CPU_READ_MASK = 0xFUL,
+
+ /// The buffer will never be locked for direct CPU writes using the
+ /// AHardwareBuffer_lock() function. Note that writing the buffer
+ /// using OpenGL or Vulkan functions or memory mappings is still
+ /// allowed.
+ AHARDWAREBUFFER_USAGE_CPU_WRITE_NEVER = 0UL << 4,
+ /// The buffer will sometimes be locked for direct CPU writes using
+ /// the AHardwareBuffer_lock() function. Note that writing the
+ /// buffer using OpenGL or Vulkan functions or memory mappings
+ /// does not require the presence of this flag.
+ AHARDWAREBUFFER_USAGE_CPU_WRITE_RARELY = 2UL << 4,
+ /// The buffer will often be locked for direct CPU writes using
+ /// the AHardwareBuffer_lock() function. Note that writing the
+ /// buffer using OpenGL or Vulkan functions or memory mappings
+ /// does not require the presence of this flag.
+ AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN = 3UL << 4,
+ /// CPU write value mask.
+ AHARDWAREBUFFER_USAGE_CPU_WRITE_MASK = 0xFUL << 4,
+
+ /// The buffer will be read from by the GPU as a texture.
+ AHARDWAREBUFFER_USAGE_GPU_SAMPLED_IMAGE = 1UL << 8,
+ /// The buffer will be written to by the GPU as a framebuffer attachment.
+ AHARDWAREBUFFER_USAGE_GPU_FRAMEBUFFER = 1UL << 9,
+ /**
+ * The buffer will be written to by the GPU as a framebuffer
+ * attachment.
+ *
+ * Note that the name of this flag is somewhat misleading: it does
+ * not imply that the buffer contains a color format. A buffer with
+ * depth or stencil format that will be used as a framebuffer
+ * attachment should also have this flag. Use the equivalent flag
+ * AHARDWAREBUFFER_USAGE_GPU_FRAMEBUFFER to avoid this confusion.
+ */
+ AHARDWAREBUFFER_USAGE_GPU_COLOR_OUTPUT = AHARDWAREBUFFER_USAGE_GPU_FRAMEBUFFER,
+ /**
+ * The buffer will be used as a composer HAL overlay layer.
+ *
+ * This flag is currently only needed when using ASurfaceTransaction_setBuffer
+ * to set a buffer. In all other cases, the framework adds this flag
+ * internally to buffers that could be presented in a composer overlay.
+ * ASurfaceTransaction_setBuffer is special because it uses buffers allocated
+ * directly through AHardwareBuffer_allocate instead of buffers allocated
+ * by the framework.
+ */
+ AHARDWAREBUFFER_USAGE_COMPOSER_OVERLAY = 1ULL << 11,
+ /**
+ * The buffer is protected from direct CPU access or being read by
+ * non-secure hardware, such as video encoders.
+ *
+ * This flag is incompatible with CPU read and write flags. It is
+ * mainly used when handling DRM video. Refer to the EGL extension
+ * EGL_EXT_protected_content and GL extension
+ * GL_EXT_protected_textures for more information on how these
+ * buffers are expected to behave.
+ */
+ AHARDWAREBUFFER_USAGE_PROTECTED_CONTENT = 1UL << 14,
+ /// The buffer will be read by a hardware video encoder.
+ AHARDWAREBUFFER_USAGE_VIDEO_ENCODE = 1UL << 16,
+ /**
+ * The buffer will be used for direct writes from sensors.
+ * When this flag is present, the format must be AHARDWAREBUFFER_FORMAT_BLOB.
+ */
+ AHARDWAREBUFFER_USAGE_SENSOR_DIRECT_DATA = 1UL << 23,
+ /**
+ * The buffer will be used as a shader storage or uniform buffer object.
+ * When this flag is present, the format must be AHARDWAREBUFFER_FORMAT_BLOB.
+ */
+ AHARDWAREBUFFER_USAGE_GPU_DATA_BUFFER = 1UL << 24,
+ /**
+ * The buffer will be used as a cube map texture.
+ * When this flag is present, the buffer must have a layer count
+ * that is a multiple of 6. Note that buffers with this flag must be
+ * bound to OpenGL textures using the extension
+ * GL_EXT_EGL_image_storage instead of GL_KHR_EGL_image.
+ */
+ AHARDWAREBUFFER_USAGE_GPU_CUBE_MAP = 1UL << 25,
+ /**
+ * The buffer contains a complete mipmap hierarchy.
+ * Note that buffers with this flag must be bound to OpenGL textures using
+ * the extension GL_EXT_EGL_image_storage instead of GL_KHR_EGL_image.
+ */
+ AHARDWAREBUFFER_USAGE_GPU_MIPMAP_COMPLETE = 1UL << 26,
+
+ AHARDWAREBUFFER_USAGE_VENDOR_0 = 1ULL << 28,
+ AHARDWAREBUFFER_USAGE_VENDOR_1 = 1ULL << 29,
+ AHARDWAREBUFFER_USAGE_VENDOR_2 = 1ULL << 30,
+ AHARDWAREBUFFER_USAGE_VENDOR_3 = 1ULL << 31,
+ AHARDWAREBUFFER_USAGE_VENDOR_4 = 1ULL << 48,
+ AHARDWAREBUFFER_USAGE_VENDOR_5 = 1ULL << 49,
+ AHARDWAREBUFFER_USAGE_VENDOR_6 = 1ULL << 50,
+ AHARDWAREBUFFER_USAGE_VENDOR_7 = 1ULL << 51,
+ AHARDWAREBUFFER_USAGE_VENDOR_8 = 1ULL << 52,
+ AHARDWAREBUFFER_USAGE_VENDOR_9 = 1ULL << 53,
+ AHARDWAREBUFFER_USAGE_VENDOR_10 = 1ULL << 54,
+ AHARDWAREBUFFER_USAGE_VENDOR_11 = 1ULL << 55,
+ AHARDWAREBUFFER_USAGE_VENDOR_12 = 1ULL << 56,
+ AHARDWAREBUFFER_USAGE_VENDOR_13 = 1ULL << 57,
+ AHARDWAREBUFFER_USAGE_VENDOR_14 = 1ULL << 58,
+ AHARDWAREBUFFER_USAGE_VENDOR_15 = 1ULL << 59,
+ AHARDWAREBUFFER_USAGE_VENDOR_16 = 1ULL << 60,
+ AHARDWAREBUFFER_USAGE_VENDOR_17 = 1ULL << 61,
+ AHARDWAREBUFFER_USAGE_VENDOR_18 = 1ULL << 62,
+ AHARDWAREBUFFER_USAGE_VENDOR_19 = 1ULL << 63,
+};
+
+/**
+ * Buffer description. Used for allocating new buffers and querying
+ * parameters of existing ones.
+ */
+typedef struct AHardwareBuffer_Desc {
+ uint32_t width; ///< Width in pixels.
+ uint32_t height; ///< Height in pixels.
+ /**
+ * Number of images in an image array. AHardwareBuffers with one
+ * layer correspond to regular 2D textures. AHardwareBuffers with
+ * more than layer correspond to texture arrays. If the layer count
+ * is a multiple of 6 and the usage flag
+ * AHARDWAREBUFFER_USAGE_GPU_CUBE_MAP is present, the buffer is
+ * a cube map or a cube map array.
+ */
+ uint32_t layers;
+ uint32_t format; ///< One of AHardwareBuffer_Format.
+ uint64_t usage; ///< Combination of AHardwareBuffer_UsageFlags.
+ uint32_t stride; ///< Row stride in pixels, ignored for AHardwareBuffer_allocate()
+ uint32_t rfu0; ///< Initialize to zero, reserved for future use.
+ uint64_t rfu1; ///< Initialize to zero, reserved for future use.
+} AHardwareBuffer_Desc;
+
+/**
+ * Holds data for a single image plane.
+ */
+typedef struct AHardwareBuffer_Plane {
+ void* data; ///< Points to first byte in plane
+ uint32_t pixelStride; ///< Distance in bytes from the color channel of one pixel to the next
+ uint32_t rowStride; ///< Distance in bytes from the first value of one row of the image to
+ /// the first value of the next row.
+} AHardwareBuffer_Plane;
+
+/**
+ * Holds all image planes that contain the pixel data.
+ */
+typedef struct AHardwareBuffer_Planes {
+ uint32_t planeCount; ///< Number of distinct planes
+ AHardwareBuffer_Plane planes[4]; ///< Array of image planes
+} AHardwareBuffer_Planes;
+
+/**
+ * Opaque handle for a native hardware buffer.
+ */
+typedef struct AHardwareBuffer AHardwareBuffer;
+
+#if __ANDROID_API__ >= 26
+
+/**
+ * Allocates a buffer that matches the passed AHardwareBuffer_Desc.
+ *
+ * If allocation succeeds, the buffer can be used according to the
+ * usage flags specified in its description. If a buffer is used in ways
+ * not compatible with its usage flags, the results are undefined and
+ * may include program termination.
+ *
+ * Available since API level 26.
+ *
+ * \return 0 on success, or an error number of the allocation fails for
+ * any reason. The returned buffer has a reference count of 1.
+ */
+int AHardwareBuffer_allocate(const AHardwareBuffer_Desc* desc,
+ AHardwareBuffer** outBuffer) __INTRODUCED_IN(26);
+/**
+ * Acquire a reference on the given AHardwareBuffer object.
+ *
+ * This prevents the object from being deleted until the last reference
+ * is removed.
+ *
+ * Available since API level 26.
+ */
+void AHardwareBuffer_acquire(AHardwareBuffer* buffer) __INTRODUCED_IN(26);
+
+/**
+ * Remove a reference that was previously acquired with
+ * AHardwareBuffer_acquire() or AHardwareBuffer_allocate().
+ *
+ * Available since API level 26.
+ */
+void AHardwareBuffer_release(AHardwareBuffer* buffer) __INTRODUCED_IN(26);
+
+/**
+ * Return a description of the AHardwareBuffer in the passed
+ * AHardwareBuffer_Desc struct.
+ *
+ * Available since API level 26.
+ */
+void AHardwareBuffer_describe(const AHardwareBuffer* buffer,
+ AHardwareBuffer_Desc* outDesc) __INTRODUCED_IN(26);
+
+/**
+ * Lock the AHardwareBuffer for direct CPU access.
+ *
+ * This function can lock the buffer for either reading or writing.
+ * It may block if the hardware needs to finish rendering, if CPU caches
+ * need to be synchronized, or possibly for other implementation-
+ * specific reasons.
+ *
+ * The passed AHardwareBuffer must have one layer, otherwise the call
+ * will fail.
+ *
+ * If \a fence is not negative, it specifies a fence file descriptor on
+ * which to wait before locking the buffer. If it's negative, the caller
+ * is responsible for ensuring that writes to the buffer have completed
+ * before calling this function. Using this parameter is more efficient
+ * than waiting on the fence and then calling this function.
+ *
+ * The \a usage parameter may only specify AHARDWAREBUFFER_USAGE_CPU_*.
+ * If set, then outVirtualAddress is filled with the address of the
+ * buffer in virtual memory. The flags must also be compatible with
+ * usage flags specified at buffer creation: if a read flag is passed,
+ * the buffer must have been created with
+ * AHARDWAREBUFFER_USAGE_CPU_READ_RARELY or
+ * AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN. If a write flag is passed, it
+ * must have been created with AHARDWAREBUFFER_USAGE_CPU_WRITE_RARELY or
+ * AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN.
+ *
+ * If \a rect is not NULL, the caller promises to modify only data in
+ * the area specified by rect. If rect is NULL, the caller may modify
+ * the contents of the entire buffer. The content of the buffer outside
+ * of the specified rect is NOT modified by this call.
+ *
+ * It is legal for several different threads to lock a buffer for read
+ * access; none of the threads are blocked.
+ *
+ * Locking a buffer simultaneously for write or read/write is undefined,
+ * but will neither terminate the process nor block the caller.
+ * AHardwareBuffer_lock may return an error or leave the buffer's
+ * content in an indeterminate state.
+ *
+ * If the buffer has AHARDWAREBUFFER_FORMAT_BLOB, it is legal lock it
+ * for reading and writing in multiple threads and/or processes
+ * simultaneously, and the contents of the buffer behave like shared
+ * memory.
+ *
+ * Available since API level 26.
+ *
+ * \return 0 on success. -EINVAL if \a buffer is NULL, the usage flags
+ * are not a combination of AHARDWAREBUFFER_USAGE_CPU_*, or the buffer
+ * has more than one layer. Error number if the lock fails for any other
+ * reason.
+ */
+int AHardwareBuffer_lock(AHardwareBuffer* buffer, uint64_t usage,
+ int32_t fence, const ARect* rect, void** outVirtualAddress) __INTRODUCED_IN(26);
+
+/**
+ * Lock a potentially multi-planar AHardwareBuffer for direct CPU access.
+ *
+ * This function is similar to AHardwareBuffer_lock, but can lock multi-planar
+ * formats. The locked planes are returned in the \a outPlanes argument. Note,
+ * that multi-planar should not be confused with multi-layer images, which this
+ * locking function does not support.
+ *
+ * YUV formats are always represented by three separate planes of data, one for
+ * each color plane. The order of planes in the array is guaranteed such that
+ * plane #0 is always Y, plane #1 is always U (Cb), and plane #2 is always V
+ * (Cr). All other formats are represented by a single plane.
+ *
+ * Additional information always accompanies the buffers, describing the row
+ * stride and the pixel stride for each plane.
+ *
+ * In case the buffer cannot be locked, \a outPlanes will contain zero planes.
+ *
+ * See the AHardwareBuffer_lock documentation for all other locking semantics.
+ *
+ * Available since API level 29.
+ *
+ * \return 0 on success. -EINVAL if \a buffer is NULL, the usage flags
+ * are not a combination of AHARDWAREBUFFER_USAGE_CPU_*, or the buffer
+ * has more than one layer. Error number if the lock fails for any other
+ * reason.
+ */
+int AHardwareBuffer_lockPlanes(AHardwareBuffer* buffer, uint64_t usage,
+ int32_t fence, const ARect* rect, AHardwareBuffer_Planes* outPlanes) __INTRODUCED_IN(29);
+
+/**
+ * Unlock the AHardwareBuffer from direct CPU access.
+ *
+ * Must be called after all changes to the buffer are completed by the
+ * caller. If \a fence is NULL, the function will block until all work
+ * is completed. Otherwise, \a fence will be set either to a valid file
+ * descriptor or to -1. The file descriptor will become signaled once
+ * the unlocking is complete and buffer contents are updated.
+ * The caller is responsible for closing the file descriptor once it's
+ * no longer needed. The value -1 indicates that unlocking has already
+ * completed before the function returned and no further operations are
+ * necessary.
+ *
+ * Available since API level 26.
+ *
+ * \return 0 on success. -EINVAL if \a buffer is NULL. Error number if
+ * the unlock fails for any reason.
+ */
+int AHardwareBuffer_unlock(AHardwareBuffer* buffer, int32_t* fence) __INTRODUCED_IN(26);
+
+/**
+ * Send the AHardwareBuffer to an AF_UNIX socket.
+ *
+ * Available since API level 26.
+ *
+ * \return 0 on success, -EINVAL if \a buffer is NULL, or an error
+ * number if the operation fails for any reason.
+ */
+int AHardwareBuffer_sendHandleToUnixSocket(const AHardwareBuffer* buffer, int socketFd) __INTRODUCED_IN(26);
+
+/**
+ * Receive an AHardwareBuffer from an AF_UNIX socket.
+ *
+ * Available since API level 26.
+ *
+ * \return 0 on success, -EINVAL if \a outBuffer is NULL, or an error
+ * number if the operation fails for any reason.
+ */
+int AHardwareBuffer_recvHandleFromUnixSocket(int socketFd, AHardwareBuffer** outBuffer) __INTRODUCED_IN(26);
+
+#endif // __ANDROID_API__ >= 26
+
+#if __ANDROID_API__ >= 29
+
+/**
+ * Test whether the given format and usage flag combination is
+ * allocatable.
+ *
+ * If this function returns true, it means that a buffer with the given
+ * description can be allocated on this implementation, unless resource
+ * exhaustion occurs. If this function returns false, it means that the
+ * allocation of the given description will never succeed.
+ *
+ * The return value of this function may depend on all fields in the
+ * description, except stride, which is always ignored. For example,
+ * some implementations have implementation-defined limits on texture
+ * size and layer count.
+ *
+ * Available since API level 29.
+ *
+ * \return 1 if the format and usage flag combination is allocatable,
+ * 0 otherwise.
+ */
+int AHardwareBuffer_isSupported(const AHardwareBuffer_Desc* desc) __INTRODUCED_IN(29);
+
+/**
+ * Lock an AHardwareBuffer for direct CPU access.
+ *
+ * This function is the same as the above lock function, but passes back
+ * additional information about the bytes per pixel and the bytes per stride
+ * of the locked buffer. If the bytes per pixel or bytes per stride are unknown
+ * or variable, or if the underlying mapper implementation does not support returning
+ * additional information, then this call will fail with INVALID_OPERATION
+ *
+ * Available since API level 29.
+ */
+int AHardwareBuffer_lockAndGetInfo(AHardwareBuffer* buffer, uint64_t usage,
+ int32_t fence, const ARect* rect, void** outVirtualAddress,
+ int32_t* outBytesPerPixel, int32_t* outBytesPerStride) __INTRODUCED_IN(29);
+#endif // __ANDROID_API__ >= 29
+
+__END_DECLS
+
+#endif // ANDROID_HARDWARE_BUFFER_H
+
+/** @} */