diff --git a/libs/nativewindow/AHardwareBuffer.cpp b/libs/nativewindow/AHardwareBuffer.cpp
new file mode 100644
index 0000000..b4b5303
--- /dev/null
+++ b/libs/nativewindow/AHardwareBuffer.cpp
@@ -0,0 +1,369 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#define LOG_TAG "AHardwareBuffer"
+
+#include <android/hardware_buffer.h>
+
+#include <errno.h>
+#include <sys/socket.h>
+#include <memory>
+
+#include <cutils/native_handle.h>
+#include <log/log.h>
+#include <utils/StrongPointer.h>
+#include <ui/GraphicBuffer.h>
+#include <system/graphics.h>
+#include <hardware/gralloc1.h>
+
+#include <private/android/AHardwareBufferHelpers.h>
+
+
+static constexpr int kDataBufferSize = 64 * sizeof(int);  // 64 ints
+
+using namespace android;
+
+// ----------------------------------------------------------------------------
+// Public functions
+// ----------------------------------------------------------------------------
+
+int AHardwareBuffer_allocate(const AHardwareBuffer_Desc* desc, AHardwareBuffer** outBuffer) {
+    if (!outBuffer || !desc)
+        return BAD_VALUE;
+
+    int format = AHardwareBuffer_convertToPixelFormat(desc->format);
+    if (format == 0) {
+        ALOGE("Invalid pixel format %u", desc->format);
+        return BAD_VALUE;
+    }
+
+    if (desc->format == AHARDWAREBUFFER_FORMAT_BLOB && desc->height != 1) {
+        ALOGE("Height must be 1 when using the AHARDWAREBUFFER_FORMAT_BLOB format");
+        return BAD_VALUE;
+    }
+
+    uint64_t producerUsage = 0;
+    uint64_t consumerUsage = 0;
+    AHardwareBuffer_convertToGrallocUsageBits(desc->usage0, &producerUsage, &consumerUsage);
+
+    sp<GraphicBuffer> gbuffer(new GraphicBuffer(
+            desc->width, desc->height, format, desc->layers, producerUsage, consumerUsage,
+            std::string("AHardwareBuffer pid [") + std::to_string(getpid()) + "]"));
+
+    status_t err = gbuffer->initCheck();
+    if (err != 0 || gbuffer->handle == 0) {
+        if (err == NO_MEMORY) {
+            GraphicBuffer::dumpAllocationsToSystemLog();
+        }
+        ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%u, h=%u, lc=%u) failed (%s), handle=%p",
+                desc->width, desc->height, desc->layers, strerror(-err), gbuffer->handle);
+        return err;
+    }
+
+    *outBuffer = AHardwareBuffer_from_GraphicBuffer(gbuffer.get());
+
+    // Ensure the buffer doesn't get destroyed when the sp<> goes away.
+    AHardwareBuffer_acquire(*outBuffer);
+    return NO_ERROR;
+}
+
+void AHardwareBuffer_acquire(AHardwareBuffer* buffer) {
+    AHardwareBuffer_to_GraphicBuffer(buffer)->incStrong((void*)AHardwareBuffer_acquire);
+}
+
+void AHardwareBuffer_release(AHardwareBuffer* buffer) {
+    AHardwareBuffer_to_GraphicBuffer(buffer)->decStrong((void*)AHardwareBuffer_release);
+}
+
+void AHardwareBuffer_describe(const AHardwareBuffer* buffer,
+        AHardwareBuffer_Desc* outDesc) {
+    if (!buffer || !outDesc) return;
+
+    const GraphicBuffer* gbuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+
+    outDesc->width = gbuffer->getWidth();
+    outDesc->height = gbuffer->getHeight();
+    outDesc->layers = gbuffer->getLayerCount();
+    outDesc->usage0 = AHardwareBuffer_convertFromGrallocUsageBits(
+            gbuffer->getUsage(), gbuffer->getUsage());
+    outDesc->usage1 = 0;
+    outDesc->format = AHardwareBuffer_convertFromPixelFormat(
+            static_cast<uint32_t>(gbuffer->getPixelFormat()));
+}
+
+int AHardwareBuffer_lock(AHardwareBuffer* buffer, uint64_t usage0,
+        int32_t fence, const ARect* rect, void** outVirtualAddress) {
+    if (!buffer) return BAD_VALUE;
+
+    if (usage0 & ~(AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN |
+                   AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN)) {
+        ALOGE("Invalid usage flags passed to AHardwareBuffer_lock; only "
+                " AHARDWAREBUFFER_USAGE0_CPU_* flags are allowed");
+        return BAD_VALUE;
+    }
+
+    uint64_t producerUsage = 0;
+    uint64_t consumerUsage = 0;
+    AHardwareBuffer_convertToGrallocUsageBits(usage0, &producerUsage, &consumerUsage);
+    GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    Rect bounds;
+    if (!rect) {
+        bounds.set(Rect(gBuffer->getWidth(), gBuffer->getHeight()));
+    } else {
+        bounds.set(Rect(rect->left, rect->top, rect->right, rect->bottom));
+    }
+    return gBuffer->lockAsync(producerUsage, consumerUsage, bounds,
+            outVirtualAddress, fence);
+}
+
+int AHardwareBuffer_unlock(AHardwareBuffer* buffer, int32_t* fence) {
+    if (!buffer) return BAD_VALUE;
+
+    GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    return gBuffer->unlockAsync(fence);
+}
+
+int AHardwareBuffer_sendHandleToUnixSocket(const AHardwareBuffer* buffer,
+        int socketFd) {
+    if (!buffer) return BAD_VALUE;
+    const GraphicBuffer* gBuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+
+    size_t flattenedSize = gBuffer->getFlattenedSize();
+    size_t fdCount = gBuffer->getFdCount();
+
+    std::unique_ptr<uint8_t[]> data(new uint8_t[flattenedSize]);
+    std::unique_ptr<int[]> fds(new int[fdCount]);
+
+    // Make copies of needed items since flatten modifies them, and we don't
+    // want to send anything if there's an error during flatten.
+    size_t flattenedSizeCopy = flattenedSize;
+    size_t fdCountCopy = fdCount;
+    void* dataStart = data.get();
+    int* fdsStart = fds.get();
+    status_t err = gBuffer->flatten(dataStart, flattenedSizeCopy, fdsStart,
+            fdCountCopy);
+    if (err != NO_ERROR) {
+        return err;
+    }
+
+    struct iovec iov[1];
+    iov[0].iov_base = data.get();
+    iov[0].iov_len = flattenedSize;
+
+    char buf[CMSG_SPACE(kDataBufferSize)];
+    struct msghdr msg = {
+            .msg_control = buf,
+            .msg_controllen = sizeof(buf),
+            .msg_iov = &iov[0],
+            .msg_iovlen = 1,
+    };
+
+    struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
+    cmsg->cmsg_level = SOL_SOCKET;
+    cmsg->cmsg_type = SCM_RIGHTS;
+    cmsg->cmsg_len = CMSG_LEN(sizeof(int) * fdCount);
+    int* fdData = reinterpret_cast<int*>(CMSG_DATA(cmsg));
+    memcpy(fdData, fds.get(), sizeof(int) * fdCount);
+    msg.msg_controllen = cmsg->cmsg_len;
+
+    int result = sendmsg(socketFd, &msg, 0);
+    if (result <= 0) {
+        ALOGE("Error writing AHardwareBuffer to socket: error %#x (%s)",
+                result, strerror(errno));
+        return result;
+    }
+    return NO_ERROR;
+}
+
+int AHardwareBuffer_recvHandleFromUnixSocket(int socketFd,
+        AHardwareBuffer** outBuffer) {
+    if (!outBuffer) return BAD_VALUE;
+
+    char dataBuf[CMSG_SPACE(kDataBufferSize)];
+    char fdBuf[CMSG_SPACE(kDataBufferSize)];
+    struct iovec iov[1];
+    iov[0].iov_base = dataBuf;
+    iov[0].iov_len = sizeof(dataBuf);
+
+    struct msghdr msg = {
+            .msg_control = fdBuf,
+            .msg_controllen = sizeof(fdBuf),
+            .msg_iov = &iov[0],
+            .msg_iovlen = 1,
+    };
+
+    int result = recvmsg(socketFd, &msg, 0);
+    if (result <= 0) {
+        ALOGE("Error reading AHardwareBuffer from socket: error %#x (%s)",
+                result, strerror(errno));
+        return result;
+    }
+
+    if (msg.msg_iovlen != 1) {
+        ALOGE("Error reading AHardwareBuffer from socket: bad data length");
+        return INVALID_OPERATION;
+    }
+
+    if (msg.msg_controllen % sizeof(int) != 0) {
+        ALOGE("Error reading AHardwareBuffer from socket: bad fd length");
+        return INVALID_OPERATION;
+    }
+
+    size_t dataLen = msg.msg_iov[0].iov_len;
+    const void* data = static_cast<const void*>(msg.msg_iov[0].iov_base);
+    if (!data) {
+        ALOGE("Error reading AHardwareBuffer from socket: no buffer data");
+        return INVALID_OPERATION;
+    }
+
+    struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg);
+    if (!cmsg) {
+        ALOGE("Error reading AHardwareBuffer from socket: no fd header");
+        return INVALID_OPERATION;
+    }
+
+    size_t fdCount = msg.msg_controllen >> 2;
+    const int* fdData = reinterpret_cast<const int*>(CMSG_DATA(cmsg));
+    if (!fdData) {
+        ALOGE("Error reading AHardwareBuffer from socket: no fd data");
+        return INVALID_OPERATION;
+    }
+
+    GraphicBuffer* gBuffer = new GraphicBuffer();
+    status_t err = gBuffer->unflatten(data, dataLen, fdData, fdCount);
+    if (err != NO_ERROR) {
+        return err;
+    }
+    *outBuffer = AHardwareBuffer_from_GraphicBuffer(gBuffer);
+    // Ensure the buffer has a positive ref-count.
+    AHardwareBuffer_acquire(*outBuffer);
+
+    return NO_ERROR;
+}
+
+const struct native_handle* AHardwareBuffer_getNativeHandle(
+        const AHardwareBuffer* buffer) {
+    if (!buffer) return nullptr;
+    const GraphicBuffer* gbuffer = AHardwareBuffer_to_GraphicBuffer(buffer);
+    return gbuffer->handle;
+}
+
+
+// ----------------------------------------------------------------------------
+// Helpers implementation
+// ----------------------------------------------------------------------------
+
+namespace android {
+
+static inline bool containsBits(uint64_t mask, uint64_t bitsToCheck) {
+    return (mask & bitsToCheck) == bitsToCheck;
+}
+
+uint32_t AHardwareBuffer_convertFromPixelFormat(uint32_t format) {
+    switch (format) {
+        case HAL_PIXEL_FORMAT_RGBA_8888:    return AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM;
+        case HAL_PIXEL_FORMAT_RGBX_8888:    return AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM;
+        case HAL_PIXEL_FORMAT_RGB_565:      return AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM;
+        case HAL_PIXEL_FORMAT_RGB_888:      return AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM;
+        case HAL_PIXEL_FORMAT_RGBA_FP16:    return AHARDWAREBUFFER_FORMAT_R16G16B16A16_SFLOAT;
+        case HAL_PIXEL_FORMAT_RGBA_1010102: return AHARDWAREBUFFER_FORMAT_A2R10G10B10_UNORM_PACK32;
+        case HAL_PIXEL_FORMAT_BLOB:         return AHARDWAREBUFFER_FORMAT_BLOB;
+        default:ALOGE("Unknown pixel format %u", format);
+            return 0;
+    }
+}
+
+uint32_t AHardwareBuffer_convertToPixelFormat(uint32_t format) {
+    switch (format) {
+        case AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM:         return HAL_PIXEL_FORMAT_RGBA_8888;
+        case AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM:         return HAL_PIXEL_FORMAT_RGBX_8888;
+        case AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM:           return HAL_PIXEL_FORMAT_RGB_565;
+        case AHARDWAREBUFFER_FORMAT_R8G8B8_UNORM:           return HAL_PIXEL_FORMAT_RGB_888;
+        case AHARDWAREBUFFER_FORMAT_R16G16B16A16_SFLOAT:    return HAL_PIXEL_FORMAT_RGBA_FP16;
+        case AHARDWAREBUFFER_FORMAT_A2R10G10B10_UNORM_PACK32: return HAL_PIXEL_FORMAT_RGBA_1010102;
+        case AHARDWAREBUFFER_FORMAT_BLOB:                   return HAL_PIXEL_FORMAT_BLOB;
+        default:ALOGE("Unknown AHardwareBuffer format %u", format);
+            return 0;
+    }
+}
+
+void AHardwareBuffer_convertToGrallocUsageBits(uint64_t usage, uint64_t* outProducerUsage,
+        uint64_t* outConsumerUsage) {
+    *outProducerUsage = 0;
+    *outConsumerUsage = 0;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_CPU_READ))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_CPU_READ;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_CPU_WRITE))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_CPU_WRITE;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_GPU_TEXTURE;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_GPU_RENDER_TARGET;
+    // Not sure what this should be.
+    //if (containsBits(usage0, AHARDWAREBUFFER_USAGE0_GPU_CUBEMAP)) bits |= 0;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_GPU_DATA_BUFFER))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_GPU_DATA_BUFFER;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_VIDEO_ENCODE))
+        *outConsumerUsage |= GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_PROTECTED_CONTENT))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_PROTECTED;
+    if (containsBits(usage, AHARDWAREBUFFER_USAGE0_SENSOR_DIRECT_DATA))
+        *outProducerUsage |= GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA;
+}
+
+uint64_t AHardwareBuffer_convertFromGrallocUsageBits(uint64_t producerUsage, uint64_t consumerUsage) {
+    uint64_t bits = 0;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_CPU_READ))
+        bits |= AHARDWAREBUFFER_USAGE0_CPU_READ;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_CPU_READ_OFTEN))
+        bits |= AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_CPU_WRITE))
+        bits |= AHARDWAREBUFFER_USAGE0_CPU_WRITE;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_CPU_WRITE_OFTEN))
+        bits |= AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_GPU_TEXTURE))
+        bits |= AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_GPU_RENDER_TARGET))
+        bits |= AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_GPU_DATA_BUFFER))
+        bits |= AHARDWAREBUFFER_USAGE0_GPU_DATA_BUFFER;
+    if (containsBits(consumerUsage, GRALLOC1_CONSUMER_USAGE_VIDEO_ENCODER))
+        bits |= AHARDWAREBUFFER_USAGE0_VIDEO_ENCODE;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_PROTECTED))
+        bits |= AHARDWAREBUFFER_USAGE0_PROTECTED_CONTENT;
+    if (containsBits(producerUsage, GRALLOC1_PRODUCER_USAGE_SENSOR_DIRECT_DATA))
+        bits |= AHARDWAREBUFFER_USAGE0_SENSOR_DIRECT_DATA;
+
+    return bits;
+}
+
+const GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(const AHardwareBuffer* buffer) {
+    return reinterpret_cast<const GraphicBuffer*>(buffer);
+}
+
+GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(AHardwareBuffer* buffer) {
+    return reinterpret_cast<GraphicBuffer*>(buffer);
+}
+
+AHardwareBuffer* AHardwareBuffer_from_GraphicBuffer(GraphicBuffer* buffer) {
+    return reinterpret_cast<AHardwareBuffer*>(buffer);
+}
+
+} // namespace android
diff --git a/libs/nativewindow/ANativeWindow.cpp b/libs/nativewindow/ANativeWindow.cpp
new file mode 100644
index 0000000..34c136a
--- /dev/null
+++ b/libs/nativewindow/ANativeWindow.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#define LOG_TAG "ANativeWindow"
+
+#include <android/native_window.h>
+#include <system/window.h>
+
+void ANativeWindow_acquire(ANativeWindow* window) {
+    window->incStrong((void*)ANativeWindow_acquire);
+}
+
+void ANativeWindow_release(ANativeWindow* window) {
+    window->decStrong((void*)ANativeWindow_release);
+}
+
+static int32_t getWindowProp(ANativeWindow* window, int what) {
+    int value;
+    int res = window->query(window, what, &value);
+    return res < 0 ? res : value;
+}
+
+int32_t ANativeWindow_getWidth(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_WIDTH);
+}
+
+int32_t ANativeWindow_getHeight(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_HEIGHT);
+}
+
+int32_t ANativeWindow_getFormat(ANativeWindow* window) {
+    return getWindowProp(window, NATIVE_WINDOW_FORMAT);
+}
+
+int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window, int32_t width,
+        int32_t height, int32_t format) {
+    int32_t err = native_window_set_buffers_format(window, format);
+    if (!err) {
+        err = native_window_set_buffers_user_dimensions(window, width, height);
+        if (!err) {
+            int mode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
+            if (width && height) {
+                mode = NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW;
+            }
+            err = native_window_set_scaling_mode(window, mode);
+        }
+    }
+    return err;
+}
+
+int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
+        ARect* inOutDirtyBounds) {
+    return window->perform(window, NATIVE_WINDOW_LOCK, outBuffer, inOutDirtyBounds);
+}
+
+int32_t ANativeWindow_unlockAndPost(ANativeWindow* window) {
+    return window->perform(window, NATIVE_WINDOW_UNLOCK_AND_POST);
+}
diff --git a/libs/nativewindow/Android.bp b/libs/nativewindow/Android.bp
new file mode 100644
index 0000000..4d1d8ac
--- /dev/null
+++ b/libs/nativewindow/Android.bp
@@ -0,0 +1,50 @@
+// Copyright (C) 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.
+
+ndk_headers {
+    name: "libnativewdinwow_headers",
+    from: "include/android",
+    to: "android",
+    srcs: ["include/android/*.h"],
+    license: "NOTICE",
+}
+
+cc_library {
+    name: "libnativewindow",
+    export_include_dirs: ["include"],
+
+    clang: true,
+
+    srcs: [
+        "AHardwareBuffer.cpp",
+        "ANativeWindow.cpp",
+    ],
+
+    shared_libs: [
+        "libhardware",
+        "libcutils",
+        "liblog",
+        "libutils",
+        "libui",
+    ],
+
+    static_libs: [
+        "libarect",
+    ],
+
+    // headers we include in our public headers
+    export_static_lib_headers: [
+        "libarect",
+    ],
+}
diff --git a/libs/nativewindow/MODULE_LICENSE_APACHE2 b/libs/nativewindow/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libs/nativewindow/MODULE_LICENSE_APACHE2
diff --git a/libs/nativewindow/NOTICE b/libs/nativewindow/NOTICE
new file mode 100644
index 0000000..c5b1efa
--- /dev/null
+++ b/libs/nativewindow/NOTICE
@@ -0,0 +1,190 @@
+
+   Copyright (c) 2005-2008, 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.
+
+   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.
+
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
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+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
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+   6. Trademarks. This License does not grant permission to use the trade
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+   7. Disclaimer of Warranty. Unless required by applicable law or
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+      negligent acts) or agreed to in writing, shall any Contributor be
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+
diff --git a/libs/nativewindow/include/android/hardware_buffer.h b/libs/nativewindow/include/android/hardware_buffer.h
new file mode 100644
index 0000000..9c08c7b
--- /dev/null
+++ b/libs/nativewindow/include/android/hardware_buffer.h
@@ -0,0 +1,230 @@
+/*
+ * 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
+ */
+
+#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 {
+    /**
+     * Corresponding formats:
+     *   Vulkan: VK_FORMAT_R8G8B8A8_UNORM
+     *   OpenGL ES: GL_RGBA8
+     */
+    AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM           = 1,
+
+    /**
+     * Corresponding formats:
+     *   Vulkan: VK_FORMAT_R8G8B8A8_UNORM
+     *   OpenGL ES: GL_RGBA8
+     */
+    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_SFLOAT      = 0x16,
+
+    /**
+     * Corresponding formats:
+     *   Vulkan: VK_FORMAT_A2R10G10B10_UNORM_PACK32
+     *   OpenGL ES: GL_RGB10_A2
+     */
+    AHARDWAREBUFFER_FORMAT_A2R10G10B10_UNORM_PACK32 = 0x2b,
+
+    /**
+     * An opaque binary blob format that must have height 1, with width equal to
+     * the buffer size in bytes.
+     */
+    AHARDWAREBUFFER_FORMAT_BLOB                     = 0x21,
+};
+
+enum {
+    /* The buffer will sometimes be read by the CPU */
+    AHARDWAREBUFFER_USAGE0_CPU_READ               = 1ULL << 1,
+    /* The buffer will often be read by the CPU*/
+    AHARDWAREBUFFER_USAGE0_CPU_READ_OFTEN         = 1ULL << 2 |
+            AHARDWAREBUFFER_USAGE0_CPU_READ,
+    /* The buffer will sometimes be written to by the CPU */
+    AHARDWAREBUFFER_USAGE0_CPU_WRITE              = 1ULL << 5,
+    /* The buffer will often be written to by the CPU */
+    AHARDWAREBUFFER_USAGE0_CPU_WRITE_OFTEN        = 1ULL << 6 |
+            AHARDWAREBUFFER_USAGE0_CPU_WRITE,
+    /* The buffer will be read from by the GPU */
+    AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE      = 1ULL << 10,
+    /* The buffer will be written to by the GPU */
+    AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT       = 1ULL << 11,
+    /* The buffer will be read from and written to by the GPU */
+    AHARDWAREBUFFER_USAGE0_GPU_STORAGE_IMAGE      =
+            AHARDWAREBUFFER_USAGE0_GPU_SAMPLED_IMAGE |
+            AHARDWAREBUFFER_USAGE0_GPU_COLOR_OUTPUT,
+    /* The buffer will be used as a cubemap texture */
+    AHARDWAREBUFFER_USAGE0_GPU_CUBEMAP            = 1ULL << 13,
+    /* The buffer will be used as a shader storage or uniform buffer object*/
+    AHARDWAREBUFFER_USAGE0_GPU_DATA_BUFFER        = 1ULL << 14,
+    /* The buffer must not be used outside of a protected hardware path */
+    AHARDWAREBUFFER_USAGE0_PROTECTED_CONTENT      = 1ULL << 18,
+    /** The buffer will be used for sensor direct data */
+    AHARDWAREBUFFER_USAGE0_SENSOR_DIRECT_DATA     = 1ULL << 29,
+    /* The buffer will be read by a hardware video encoder */
+    AHARDWAREBUFFER_USAGE0_VIDEO_ENCODE           = 1ULL << 21,
+};
+
+typedef struct AHardwareBuffer_Desc {
+    uint32_t    width;
+    uint32_t    height;
+    uint32_t    layers;
+    uint64_t    usage0;     // Combination of AHARDWAREBUFFER_USAGE0_*
+    uint64_t    usage1;     // Initialize to zero, reserved for future use
+    uint32_t    format;     // One of AHARDWAREBUFFER_FORMAT_*
+} AHardwareBuffer_Desc;
+
+typedef struct AHardwareBuffer AHardwareBuffer;
+
+/**
+ * Allocates a buffer that backs an AHardwareBuffer using the passed
+ * AHardwareBuffer_Desc.
+ *
+ * Returns NO_ERROR on success, or an error number of the allocation fails for
+ * any reason.
+ */
+int AHardwareBuffer_allocate(const AHardwareBuffer_Desc* desc,
+        AHardwareBuffer** outBuffer);
+/**
+ * Acquire a reference on the given AHardwareBuffer object.  This prevents the
+ * object from being deleted until the last reference is removed.
+ */
+void AHardwareBuffer_acquire(AHardwareBuffer* buffer);
+
+/**
+ * Remove a reference that was previously acquired with
+ * AHardwareBuffer_acquire().
+ */
+void AHardwareBuffer_release(AHardwareBuffer* buffer);
+
+/**
+ * Return a description of the AHardwareBuffer in the passed
+ * AHardwareBuffer_Desc struct.
+ */
+void AHardwareBuffer_describe(const AHardwareBuffer* buffer,
+        AHardwareBuffer_Desc* outDesc);
+
+/*
+ * Lock the AHardwareBuffer for reading or writing, depending on the usage flags
+ * passed.  This call may block if the hardware needs to finish rendering or if
+ * CPU caches need to be synchronized, or possibly for other implementation-
+ * specific reasons.  If fence is not negative, then it specifies a fence file
+ * descriptor that will be signaled when the buffer is locked, otherwise the
+ * caller will block until the buffer is available.
+ *
+ * If 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.
+ *
+ * The buffer usage may only specify AHARDWAREBUFFER_USAGE0_CPU_*. If set, then
+ * outVirtualAddress is filled with the address of the buffer in virtual memory,
+ * otherwise this function will fail.
+ *
+ * THREADING CONSIDERATIONS:
+ *
+ * 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 into an indeterminate
+ * state.
+ *
+ * Returns NO_ERROR on success, BAD_VALUE if the buffer is NULL or if the usage0
+ * flags are not a combination of AHARDWAREBUFFER_USAGE0_CPU_*, or an error
+ * number of the lock fails for any reason.
+ */
+int AHardwareBuffer_lock(AHardwareBuffer* buffer, uint64_t usage0,
+        int32_t fence, const ARect* rect, void** outVirtualAddress);
+
+/*
+ * Unlock the AHardwareBuffer; must be called after all changes to the buffer
+ * are completed by the caller. If fence is not NULL then it will be set to a
+ * file descriptor that is signaled when all pending work on the buffer is
+ * completed. The caller is responsible for closing the fence when it is no
+ * longer needed.
+ *
+ * Returns NO_ERROR on success, BAD_VALUE if the buffer is NULL, or an error
+ * number of the lock fails for any reason.
+ */
+int AHardwareBuffer_unlock(AHardwareBuffer* buffer, int32_t* fence);
+
+/*
+ * Send the AHardwareBuffer to an AF_UNIX socket.
+ *
+ * Returns NO_ERROR on success, BAD_VALUE if the buffer is NULL, or an error
+ * number of the lock fails for any reason.
+ */
+int AHardwareBuffer_sendHandleToUnixSocket(const AHardwareBuffer* buffer,
+        int socketFd);
+
+/*
+ * Receive the AHardwareBuffer from an AF_UNIX socket.
+ *
+ * Returns NO_ERROR on success, BAD_VALUE if the buffer is NULL, or an error
+ * number of the lock fails for any reason.
+ */
+int AHardwareBuffer_recvHandleFromUnixSocket(int socketFd,
+        AHardwareBuffer** outBuffer);
+
+// ----------------------------------------------------------------------------
+// Everything below here is part of the public NDK API, but is intended only
+// for use by device-specific graphics drivers.
+struct native_handle;
+const struct native_handle* AHardwareBuffer_getNativeHandle(
+        const AHardwareBuffer* buffer);
+
+__END_DECLS
+
+#endif // ANDROID_HARDWARE_BUFFER_H
diff --git a/libs/nativewindow/include/android/native_window.h b/libs/nativewindow/include/android/native_window.h
new file mode 100644
index 0000000..6a46d7f
--- /dev/null
+++ b/libs/nativewindow/include/android/native_window.h
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+/**
+ * @addtogroup NativeActivity Native Activity
+ * @{
+ */
+
+/**
+ * @file native_window.h
+ */
+
+#ifndef ANDROID_NATIVE_WINDOW_H
+#define ANDROID_NATIVE_WINDOW_H
+
+#include <sys/cdefs.h>
+
+#include <android/hardware_buffer.h>
+#include <android/rect.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Legacy window pixel format names, kept for backwards compatibility.
+ * New code and APIs should use AHARDWAREBUFFER_FORMAT_*.
+ */
+enum {
+    // NOTE: these values must match the values from graphics/common/x.x/types.hal
+
+    /** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Alpha: 8 bits. **/
+    WINDOW_FORMAT_RGBA_8888          = AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM,
+    /** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Unused: 8 bits. **/
+    WINDOW_FORMAT_RGBX_8888          = AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM,
+    /** Red: 5 bits, Green: 6 bits, Blue: 5 bits. **/
+    WINDOW_FORMAT_RGB_565            = AHARDWAREBUFFER_FORMAT_R5G6B5_UNORM,
+};
+
+struct ANativeWindow;
+/**
+ * {@link ANativeWindow} is opaque type that provides access to a native window.
+ *
+ * A pointer can be obtained using ANativeWindow_fromSurface().
+ */
+typedef struct ANativeWindow ANativeWindow;
+
+/**
+ * {@link ANativeWindow} is a struct that represents a windows buffer.
+ *
+ * A pointer can be obtained using ANativeWindow_lock().
+ */
+typedef struct ANativeWindow_Buffer {
+    // The number of pixels that are show horizontally.
+    int32_t width;
+
+    // The number of pixels that are shown vertically.
+    int32_t height;
+
+    // The number of *pixels* that a line in the buffer takes in
+    // memory.  This may be >= width.
+    int32_t stride;
+
+    // The format of the buffer.  One of WINDOW_FORMAT_*
+    int32_t format;
+
+    // The actual bits.
+    void* bits;
+
+    // Do not touch.
+    uint32_t reserved[6];
+} ANativeWindow_Buffer;
+
+/**
+ * Acquire a reference on the given ANativeWindow object.  This prevents the object
+ * from being deleted until the reference is removed.
+ */
+void ANativeWindow_acquire(ANativeWindow* window);
+
+/**
+ * Remove a reference that was previously acquired with ANativeWindow_acquire().
+ */
+void ANativeWindow_release(ANativeWindow* window);
+
+/**
+ * Return the current width in pixels of the window surface.  Returns a
+ * negative value on error.
+ */
+int32_t ANativeWindow_getWidth(ANativeWindow* window);
+
+/**
+ * Return the current height in pixels of the window surface.  Returns a
+ * negative value on error.
+ */
+int32_t ANativeWindow_getHeight(ANativeWindow* window);
+
+/**
+ * Return the current pixel format of the window surface.  Returns a
+ * negative value on error.
+ */
+int32_t ANativeWindow_getFormat(ANativeWindow* window);
+
+/**
+ * Change the format and size of the window buffers.
+ *
+ * The width and height control the number of pixels in the buffers, not the
+ * dimensions of the window on screen.  If these are different than the
+ * window's physical size, then it buffer will be scaled to match that size
+ * when compositing it to the screen.
+ *
+ * For all of these parameters, if 0 is supplied then the window's base
+ * value will come back in force.
+ *
+ * width and height must be either both zero or both non-zero.
+ *
+ */
+int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window,
+        int32_t width, int32_t height, int32_t format);
+
+/**
+ * Lock the window's next drawing surface for writing.
+ * inOutDirtyBounds is used as an in/out parameter, upon entering the
+ * function, it contains the dirty region, that is, the region the caller
+ * intends to redraw. When the function returns, inOutDirtyBounds is updated
+ * with the actual area the caller needs to redraw -- this region is often
+ * extended by ANativeWindow_lock.
+ */
+int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
+        ARect* inOutDirtyBounds);
+
+/**
+ * Unlock the window's drawing surface after previously locking it,
+ * posting the new buffer to the display.
+ */
+int32_t ANativeWindow_unlockAndPost(ANativeWindow* window);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif // ANDROID_NATIVE_WINDOW_H
+
+/** @} */
diff --git a/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h b/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h
new file mode 100644
index 0000000..f138fa7
--- /dev/null
+++ b/libs/nativewindow/include/private/android/AHardwareBufferHelpers.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
+#define ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H
+
+/*
+ * This file contains utility functions related to AHardwareBuffer, mostly to convert
+ * to/from HAL formats.
+ *
+ * These are PRIVATE methods, so this file can NEVER appear in a public NDK header.
+ * They are used by higher level libraries such as core/jni.
+ */
+
+#include <stdint.h>
+
+struct AHardwareBuffer;
+
+namespace android {
+
+uint32_t AHardwareBuffer_convertFromPixelFormat(uint32_t format);
+
+uint32_t AHardwareBuffer_convertToPixelFormat(uint32_t format);
+
+void AHardwareBuffer_convertToGrallocUsageBits(uint64_t usage,
+        uint64_t* outProducerUsage, uint64_t* outConsumerUsage);
+
+uint64_t AHardwareBuffer_convertFromGrallocUsageBits(
+        uint64_t producerUsage, uint64_t consumerUsage);
+
+
+class GraphicBuffer;
+const GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(const AHardwareBuffer* buffer);
+GraphicBuffer* AHardwareBuffer_to_GraphicBuffer(AHardwareBuffer* buffer);
+AHardwareBuffer* AHardwareBuffer_from_GraphicBuffer(GraphicBuffer* buffer);
+
+} // namespace android
+
+#endif // ANDROID_PRIVATE_NATIVE_AHARDWARE_BUFFER_HELPERS_H