Merge "gralloc: move codec2 to GraphicBufferAllocator/Mapper"
diff --git a/media/codec2/vndk/Android.bp b/media/codec2/vndk/Android.bp
index e0b3939..071bb74 100644
--- a/media/codec2/vndk/Android.bp
+++ b/media/codec2/vndk/Android.bp
@@ -50,13 +50,8 @@
     ],
 
     shared_libs: [
-        "android.hardware.graphics.allocator@2.0",
-        "android.hardware.graphics.allocator@3.0",
-        "android.hardware.graphics.allocator@4.0",
         "android.hardware.graphics.bufferqueue@2.0",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
-        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.common@1.2",
         "android.hardware.media.bufferpool@2.0",
         "libbase",
         "libcutils",
diff --git a/media/codec2/vndk/C2AllocatorGralloc.cpp b/media/codec2/vndk/C2AllocatorGralloc.cpp
index 78ac355..3ac3d89 100644
--- a/media/codec2/vndk/C2AllocatorGralloc.cpp
+++ b/media/codec2/vndk/C2AllocatorGralloc.cpp
@@ -18,19 +18,21 @@
 #define LOG_TAG "C2AllocatorGralloc"
 #include <utils/Log.h>
 
-#include <android/hardware/graphics/allocator/2.0/IAllocator.h>
-#include <android/hardware/graphics/mapper/2.0/IMapper.h>
-#include <android/hardware/graphics/allocator/3.0/IAllocator.h>
-#include <android/hardware/graphics/mapper/3.0/IMapper.h>
-#include <android/hardware/graphics/allocator/4.0/IAllocator.h>
-#include <android/hardware/graphics/mapper/4.0/IMapper.h>
+#include <mutex>
+
+#include <android/hardware/graphics/common/1.2/types.h>
 #include <cutils/native_handle.h>
 #include <hardware/gralloc.h>
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/GraphicBufferMapper.h>
 
 #include <C2AllocatorGralloc.h>
 #include <C2Buffer.h>
 #include <C2PlatformSupport.h>
 
+using ::android::hardware::hidl_handle;
+using PixelFormat4 = ::android::hardware::graphics::common::V1_2::PixelFormat;
+
 namespace android {
 
 namespace /* unnamed */ {
@@ -63,82 +65,9 @@
             (expected & PASSTHROUGH_USAGE_MASK));
 }
 
-using ::android::hardware::hidl_handle;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::graphics::common::V1_0::BufferUsage;
-using PixelFormat2 = ::android::hardware::graphics::common::V1_0::PixelFormat;
-using PixelFormat3 = ::android::hardware::graphics::common::V1_2::PixelFormat;
-using PixelFormat4 = ::android::hardware::graphics::common::V1_2::PixelFormat;
-
-using IAllocator2 = ::android::hardware::graphics::allocator::V2_0::IAllocator;
-using BufferDescriptor2 = ::android::hardware::graphics::mapper::V2_0::BufferDescriptor;
-using Error2 = ::android::hardware::graphics::mapper::V2_0::Error;
-using IMapper2 = ::android::hardware::graphics::mapper::V2_0::IMapper;
-
-using IAllocator3 = ::android::hardware::graphics::allocator::V3_0::IAllocator;
-using BufferDescriptor3 = ::android::hardware::graphics::mapper::V3_0::BufferDescriptor;
-using Error3 = ::android::hardware::graphics::mapper::V3_0::Error;
-using IMapper3 = ::android::hardware::graphics::mapper::V3_0::IMapper;
-
-using IAllocator4 = ::android::hardware::graphics::allocator::V4_0::IAllocator;
-using BufferDescriptor4 = ::android::hardware::graphics::mapper::V4_0::BufferDescriptor;
-using Error4 = ::android::hardware::graphics::mapper::V4_0::Error;
-using IMapper4 = ::android::hardware::graphics::mapper::V4_0::IMapper;
-
 namespace /* unnamed */ {
 
-struct BufferDescriptorInfo2 {
-    IMapper2::BufferDescriptorInfo mapperInfo;
-    uint32_t stride;
-};
-
-struct BufferDescriptorInfo3 {
-    IMapper3::BufferDescriptorInfo mapperInfo;
-    uint32_t stride;
-};
-
-struct BufferDescriptorInfo4 {
-    IMapper4::BufferDescriptorInfo mapperInfo;
-    uint32_t stride;
-};
-
 /* ===================================== GRALLOC ALLOCATION ==================================== */
-c2_status_t maperr2error(Error2 maperr) {
-    switch (maperr) {
-        case Error2::NONE:           return C2_OK;
-        case Error2::BAD_DESCRIPTOR: return C2_BAD_VALUE;
-        case Error2::BAD_BUFFER:     return C2_BAD_VALUE;
-        case Error2::BAD_VALUE:      return C2_BAD_VALUE;
-        case Error2::NO_RESOURCES:   return C2_NO_MEMORY;
-        case Error2::UNSUPPORTED:    return C2_CANNOT_DO;
-    }
-    return C2_CORRUPTED;
-}
-
-c2_status_t maperr2error(Error3 maperr) {
-    switch (maperr) {
-        case Error3::NONE:           return C2_OK;
-        case Error3::BAD_DESCRIPTOR: return C2_BAD_VALUE;
-        case Error3::BAD_BUFFER:     return C2_BAD_VALUE;
-        case Error3::BAD_VALUE:      return C2_BAD_VALUE;
-        case Error3::NO_RESOURCES:   return C2_NO_MEMORY;
-        case Error3::UNSUPPORTED:    return C2_CANNOT_DO;
-    }
-    return C2_CORRUPTED;
-}
-
-c2_status_t maperr2error(Error4 maperr) {
-    switch (maperr) {
-        case Error4::NONE:           return C2_OK;
-        case Error4::BAD_DESCRIPTOR: return C2_BAD_VALUE;
-        case Error4::BAD_BUFFER:     return C2_BAD_VALUE;
-        case Error4::BAD_VALUE:      return C2_BAD_VALUE;
-        case Error4::NO_RESOURCES:   return C2_NO_MEMORY;
-        case Error4::UNSUPPORTED:    return C2_CANNOT_DO;
-    }
-    return C2_CORRUPTED;
-}
-
 bool native_handle_is_invalid(const native_handle_t *const handle) {
     // perform basic validation of a native handle
     if (handle == nullptr) {
@@ -334,21 +263,11 @@
 
     // internal methods
     // |handle| will be moved.
+
     C2AllocationGralloc(
-              const BufferDescriptorInfo2 &info,
-              const sp<IMapper2> &mapper,
-              hidl_handle &hidlHandle,
-              const C2HandleGralloc *const handle,
-              C2Allocator::id_t allocatorId);
-    C2AllocationGralloc(
-              const BufferDescriptorInfo3 &info,
-              const sp<IMapper3> &mapper,
-              hidl_handle &hidlHandle,
-              const C2HandleGralloc *const handle,
-              C2Allocator::id_t allocatorId);
-    C2AllocationGralloc(
-              const BufferDescriptorInfo4 &info,
-              const sp<IMapper4> &mapper,
+              uint32_t width, uint32_t height,
+              uint32_t format, uint32_t layerCount,
+              uint64_t grallocUsage, uint32_t stride,
               hidl_handle &hidlHandle,
               const C2HandleGralloc *const handle,
               C2Allocator::id_t allocatorId);
@@ -356,12 +275,12 @@
     c2_status_t status() const;
 
 private:
-    const BufferDescriptorInfo2 mInfo2{};
-    const sp<IMapper2> mMapper2{nullptr};
-    const BufferDescriptorInfo3 mInfo3{};
-    const sp<IMapper3> mMapper3{nullptr};
-    const BufferDescriptorInfo4 mInfo4{};
-    const sp<IMapper4> mMapper4{nullptr};
+    const uint32_t mWidth;
+    const uint32_t mHeight;
+    const uint32_t mFormat;
+    const uint32_t mLayerCount;
+    const uint64_t mGrallocUsage;
+    const uint32_t mStride;
     const hidl_handle mHidlHandle;
     const C2HandleGralloc *mHandle;
     buffer_handle_t mBuffer;
@@ -372,48 +291,19 @@
 };
 
 C2AllocationGralloc::C2AllocationGralloc(
-          const BufferDescriptorInfo2 &info,
-          const sp<IMapper2> &mapper,
+          uint32_t width, uint32_t height,
+          uint32_t format, uint32_t layerCount,
+          uint64_t grallocUsage, uint32_t stride,
           hidl_handle &hidlHandle,
           const C2HandleGralloc *const handle,
           C2Allocator::id_t allocatorId)
-    : C2GraphicAllocation(info.mapperInfo.width, info.mapperInfo.height),
-      mInfo2(info),
-      mMapper2(mapper),
-      mHidlHandle(std::move(hidlHandle)),
-      mHandle(handle),
-      mBuffer(nullptr),
-      mLockedHandle(nullptr),
-      mLocked(false),
-      mAllocatorId(allocatorId) {
-}
-
-C2AllocationGralloc::C2AllocationGralloc(
-          const BufferDescriptorInfo3 &info,
-          const sp<IMapper3> &mapper,
-          hidl_handle &hidlHandle,
-          const C2HandleGralloc *const handle,
-          C2Allocator::id_t allocatorId)
-    : C2GraphicAllocation(info.mapperInfo.width, info.mapperInfo.height),
-      mInfo3(info),
-      mMapper3(mapper),
-      mHidlHandle(std::move(hidlHandle)),
-      mHandle(handle),
-      mBuffer(nullptr),
-      mLockedHandle(nullptr),
-      mLocked(false),
-      mAllocatorId(allocatorId) {
-}
-
-C2AllocationGralloc::C2AllocationGralloc(
-          const BufferDescriptorInfo4 &info,
-          const sp<IMapper4> &mapper,
-          hidl_handle &hidlHandle,
-          const C2HandleGralloc *const handle,
-          C2Allocator::id_t allocatorId)
-    : C2GraphicAllocation(info.mapperInfo.width, info.mapperInfo.height),
-      mInfo4(info),
-      mMapper4(mapper),
+    : C2GraphicAllocation(width, height),
+      mWidth(width),
+      mHeight(height),
+      mFormat(format),
+      mLayerCount(layerCount),
+      mGrallocUsage(grallocUsage),
+      mStride(stride),
       mHidlHandle(std::move(hidlHandle)),
       mHandle(handle),
       mBuffer(nullptr),
@@ -429,23 +319,10 @@
         unmap(addr, C2Rect(), nullptr);
     }
     if (mBuffer) {
-        if (mMapper2) {
-            if (!mMapper2->freeBuffer(const_cast<native_handle_t *>(
-                    mBuffer)).isOk()) {
-                ALOGE("failed transaction: freeBuffer");
-            }
-        } else if (mMapper3) {
-            if (!mMapper3->freeBuffer(const_cast<native_handle_t *>(
-                    mBuffer)).isOk()) {
-                ALOGE("failed transaction: freeBuffer");
-            }
-        } else {
-            if (!mMapper4->freeBuffer(const_cast<native_handle_t *>(
-                    mBuffer)).isOk()) {
-                ALOGE("failed transaction: freeBuffer");
-            }
+        status_t err = GraphicBufferMapper::get().freeBuffer(mBuffer);
+        if (err) {
+            ALOGE("failed transaction: freeBuffer");
         }
-
     }
     if (mHandle) {
         native_handle_delete(
@@ -466,7 +343,7 @@
           (long long)usage.expected, (long long)grallocUsage);
 
     // TODO
-    (void) fence;
+    (void)fence;
 
     std::lock_guard<std::mutex> lock(mMappedLock);
     if (mBuffer && mLocked) {
@@ -478,45 +355,13 @@
         return C2_BAD_VALUE;
     }
 
-    c2_status_t err = C2_OK;
     if (!mBuffer) {
-        if (mMapper2) {
-            if (!mMapper2->importBuffer(
-                    mHidlHandle, [&err, this](const auto &maperr, const auto &buffer) {
-                        err = maperr2error(maperr);
-                        if (err == C2_OK) {
-                            mBuffer = static_cast<buffer_handle_t>(buffer);
-                        }
-                    }).isOk()) {
-                ALOGE("failed transaction: importBuffer");
-                return C2_CORRUPTED;
-            }
-        } else if (mMapper3) {
-            if (!mMapper3->importBuffer(
-                    mHidlHandle, [&err, this](const auto &maperr, const auto &buffer) {
-                        err = maperr2error(maperr);
-                        if (err == C2_OK) {
-                            mBuffer = static_cast<buffer_handle_t>(buffer);
-                        }
-                    }).isOk()) {
-                ALOGE("failed transaction: importBuffer (@3.0)");
-                return C2_CORRUPTED;
-            }
-        } else {
-            if (!mMapper4->importBuffer(
-                    mHidlHandle, [&err, this](const auto &maperr, const auto &buffer) {
-                        err = maperr2error(maperr);
-                        if (err == C2_OK) {
-                            mBuffer = static_cast<buffer_handle_t>(buffer);
-                        }
-                    }).isOk()) {
-                ALOGE("failed transaction: importBuffer (@4.0)");
-                return C2_CORRUPTED;
-            }
-        }
-        if (err != C2_OK) {
-            ALOGD("importBuffer failed: %d", err);
-            return err;
+        status_t err = GraphicBufferMapper::get().importBuffer(
+                            mHidlHandle.getNativeHandle(), mWidth, mHeight, mLayerCount,
+                            mFormat, mGrallocUsage, mStride, &mBuffer);
+        if (err) {
+            ALOGE("failed transaction: importBuffer");
+            return C2_CORRUPTED;
         }
         if (mBuffer == nullptr) {
             ALOGD("importBuffer returned null buffer");
@@ -528,96 +373,26 @@
         if (mHandle) {
             mHandle->getIgbpData(&generation, &igbp_id, &igbp_slot);
         }
-        if (mMapper2) {
-            mLockedHandle = C2HandleGralloc::WrapAndMoveNativeHandle(
-                    mBuffer, mInfo2.mapperInfo.width, mInfo2.mapperInfo.height,
-                    (uint32_t)mInfo2.mapperInfo.format, mInfo2.mapperInfo.usage,
-                    mInfo2.stride, generation, igbp_id, igbp_slot);
-        } else if (mMapper3) {
-            mLockedHandle = C2HandleGralloc::WrapAndMoveNativeHandle(
-                    mBuffer, mInfo3.mapperInfo.width, mInfo3.mapperInfo.height,
-                    (uint32_t)mInfo3.mapperInfo.format, mInfo3.mapperInfo.usage,
-                    mInfo3.stride, generation, igbp_id, igbp_slot);
-        } else {
-            mLockedHandle = C2HandleGralloc::WrapAndMoveNativeHandle(
-                    mBuffer, mInfo4.mapperInfo.width, mInfo4.mapperInfo.height,
-                    (uint32_t)mInfo4.mapperInfo.format, mInfo4.mapperInfo.usage,
-                    mInfo4.stride, generation, igbp_id, igbp_slot);
-        }
-    }
 
-    PixelFormat4 format;
-    if (mMapper2) {
-        format = PixelFormat4(mInfo2.mapperInfo.format);
-    } else if (mMapper3) {
-        format = PixelFormat4(mInfo3.mapperInfo.format);
-    } else {
-        format = PixelFormat4(mInfo4.mapperInfo.format);
+        mLockedHandle = C2HandleGralloc::WrapAndMoveNativeHandle(
+                mBuffer, mWidth, mHeight, mFormat, mGrallocUsage,
+                mStride, generation, igbp_id, igbp_slot);
     }
-    switch (format) {
-        case PixelFormat4::RGBA_1010102: {
+    switch (mFormat) {
+        case static_cast<uint32_t>(PixelFormat4::RGBA_1010102): {
             // TRICKY: this is used for media as YUV444 in the case when it is queued directly to a
             // Surface. In all other cases it is RGBA. We don't know which case it is here, so
             // default to YUV for now.
             void *pointer = nullptr;
-            if (mMapper2) {
-                if (!mMapper2->lock(
-                        const_cast<native_handle_t *>(mBuffer),
-                        grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &pointer](const auto &maperr, const auto &mapPointer) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                pointer = mapPointer;
-                            }
-                        }).isOk()) {
-                    ALOGE("failed transaction: lock(RGBA_1010102)");
-                    return C2_CORRUPTED;
-                }
-            } else if (mMapper3) {
-                if (!mMapper3->lock(
-                        const_cast<native_handle_t *>(mBuffer),
-                        grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &pointer](const auto &maperr, const auto &mapPointer,
-                                         int32_t bytesPerPixel, int32_t bytesPerStride) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                pointer = mapPointer;
-                            }
-                            (void)bytesPerPixel;
-                            (void)bytesPerStride;
-                        }).isOk()) {
-                    ALOGE("failed transaction: lock(RGBA_1010102) (@3.0)");
-                    return C2_CORRUPTED;
-                }
-            } else {
-                if (!mMapper4->lock(
-                        const_cast<native_handle_t *>(mBuffer),
-                        grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &pointer](const auto &maperr, const auto &mapPointer) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                pointer = mapPointer;
-                            }
-                        }).isOk()) {
-                    ALOGE("failed transaction: lock(RGBA_1010102) (@4.0)");
-                    return C2_CORRUPTED;
-                }
-            }
-            if (err != C2_OK) {
-                ALOGD("lock failed: %d", err);
-                return err;
+            // TODO: fence
+            status_t err = GraphicBufferMapper::get().lock(
+                                const_cast<native_handle_t *>(mBuffer), grallocUsage,
+                                { (int32_t)rect.left, (int32_t)rect.top,
+                                  (int32_t)rect.width, (int32_t)rect.height },
+                                &pointer);
+            if (err) {
+                ALOGE("failed transaction: lock(RGBA_1010102)");
+                return C2_CORRUPTED;
             }
             // treat as 32-bit values
             addr[C2PlanarLayout::PLANE_Y] = (uint8_t *)pointer;
@@ -627,18 +402,10 @@
             layout->type = C2PlanarLayout::TYPE_YUVA;
             layout->numPlanes = 4;
             layout->rootPlanes = 1;
-            int32_t stride;
-            if (mMapper2) {
-                stride = int32_t(mInfo2.stride);
-            } else if (mMapper3) {
-                stride = int32_t(mInfo3.stride);
-            } else {
-                stride = int32_t(mInfo4.stride);
-            }
             layout->planes[C2PlanarLayout::PLANE_Y] = {
                 C2PlaneInfo::CHANNEL_Y,         // channel
                 4,                              // colInc
-                4 * stride,                     // rowInc
+                static_cast<int32_t>(4 * mStride), // rowInc
                 1,                              // mColSampling
                 1,                              // mRowSampling
                 32,                             // allocatedDepth
@@ -651,7 +418,7 @@
             layout->planes[C2PlanarLayout::PLANE_U] = {
                 C2PlaneInfo::CHANNEL_CB,         // channel
                 4,                              // colInc
-                4 * stride,                     // rowInc
+                static_cast<int32_t>(4 * mStride), // rowInc
                 1,                              // mColSampling
                 1,                              // mRowSampling
                 32,                             // allocatedDepth
@@ -664,7 +431,7 @@
             layout->planes[C2PlanarLayout::PLANE_V] = {
                 C2PlaneInfo::CHANNEL_CR,         // channel
                 4,                              // colInc
-                4 * stride,                     // rowInc
+                static_cast<int32_t>(4 * mStride), // rowInc
                 1,                              // mColSampling
                 1,                              // mRowSampling
                 32,                             // allocatedDepth
@@ -677,7 +444,7 @@
             layout->planes[C2PlanarLayout::PLANE_A] = {
                 C2PlaneInfo::CHANNEL_A,         // channel
                 4,                              // colInc
-                4 * stride,                     // rowInc
+                static_cast<int32_t>(4 * mStride), // rowInc
                 1,                              // mColSampling
                 1,                              // mRowSampling
                 32,                             // allocatedDepth
@@ -690,69 +457,20 @@
             break;
         }
 
-        case PixelFormat4::RGBA_8888:
+        case static_cast<uint32_t>(PixelFormat4::RGBA_8888):
             // TODO: alpha channel
             // fall-through
-        case PixelFormat4::RGBX_8888: {
+        case static_cast<uint32_t>(PixelFormat4::RGBX_8888): {
             void *pointer = nullptr;
-            if (mMapper2) {
-                if (!mMapper2->lock(
-                        const_cast<native_handle_t *>(mBuffer),
-                        grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &pointer](const auto &maperr, const auto &mapPointer) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                pointer = mapPointer;
-                            }
-                        }).isOk()) {
-                    ALOGE("failed transaction: lock(RGBA_8888)");
-                    return C2_CORRUPTED;
-                }
-            } else if (mMapper3) {
-                if (!mMapper3->lock(
-                        const_cast<native_handle_t *>(mBuffer),
-                        grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &pointer](const auto &maperr, const auto &mapPointer,
-                                         int32_t bytesPerPixel, int32_t bytesPerStride) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                pointer = mapPointer;
-                            }
-                            (void)bytesPerPixel;
-                            (void)bytesPerStride;
-                        }).isOk()) {
-                    ALOGE("failed transaction: lock(RGBA_8888) (@3.0)");
-                    return C2_CORRUPTED;
-                }
-            } else {
-                if (!mMapper4->lock(
-                        const_cast<native_handle_t *>(mBuffer),
-                        grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &pointer](const auto &maperr, const auto &mapPointer) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                pointer = mapPointer;
-                            }
-                        }).isOk()) {
-                    ALOGE("failed transaction: lock(RGBA_8888) (@4.0)");
-                    return C2_CORRUPTED;
-                }
-            }
-            if (err != C2_OK) {
-                ALOGD("lock failed: %d", err);
-                return err;
+            // TODO: fence
+            status_t err = GraphicBufferMapper::get().lock(
+                                const_cast<native_handle_t*>(mBuffer), grallocUsage,
+                                { (int32_t)rect.left, (int32_t)rect.top,
+                                  (int32_t)rect.width, (int32_t)rect.height },
+                                &pointer);
+            if (err) {
+                ALOGE("failed transaction: lock(RGBA_8888)");
+                return C2_CORRUPTED;
             }
             addr[C2PlanarLayout::PLANE_R] = (uint8_t *)pointer;
             addr[C2PlanarLayout::PLANE_G] = (uint8_t *)pointer + 1;
@@ -760,18 +478,10 @@
             layout->type = C2PlanarLayout::TYPE_RGB;
             layout->numPlanes = 3;
             layout->rootPlanes = 1;
-            int32_t stride;
-            if (mMapper2) {
-                stride = int32_t(mInfo2.stride);
-            } else if (mMapper3) {
-                stride = int32_t(mInfo3.stride);
-            } else {
-                stride = int32_t(mInfo4.stride);
-            }
             layout->planes[C2PlanarLayout::PLANE_R] = {
                 C2PlaneInfo::CHANNEL_R,         // channel
                 4,                              // colInc
-                4 * stride,                     // rowInc
+                static_cast<int32_t>(4 * mStride), // rowInc
                 1,                              // mColSampling
                 1,                              // mRowSampling
                 8,                              // allocatedDepth
@@ -784,7 +494,7 @@
             layout->planes[C2PlanarLayout::PLANE_G] = {
                 C2PlaneInfo::CHANNEL_G,         // channel
                 4,                              // colInc
-                4 * stride,                     // rowInc
+                static_cast<int32_t>(4 * mStride), // rowInc
                 1,                              // mColSampling
                 1,                              // mRowSampling
                 8,                              // allocatedDepth
@@ -797,7 +507,7 @@
             layout->planes[C2PlanarLayout::PLANE_B] = {
                 C2PlaneInfo::CHANNEL_B,         // channel
                 4,                              // colInc
-                4 * stride,                     // rowInc
+                static_cast<int32_t>(4 * mStride), // rowInc
                 1,                              // mColSampling
                 1,                              // mRowSampling
                 8,                              // allocatedDepth
@@ -810,142 +520,23 @@
             break;
         }
 
-        case PixelFormat4::BLOB: {
-            void* pointer = nullptr;
-            if (mMapper2) {
-                if (!mMapper2->lock(const_cast<native_handle_t*>(mBuffer), grallocUsage,
-                                    {(int32_t)rect.left, (int32_t)rect.top, (int32_t)rect.width,
-                                     (int32_t)rect.height},
-                                    // TODO: fence
-                                    hidl_handle(),
-                                    [&err, &pointer](const auto& maperr, const auto& mapPointer) {
-                                        err = maperr2error(maperr);
-                                        if (err == C2_OK) {
-                                            pointer = mapPointer;
-                                        }
-                                    }).isOk()) {
-                    ALOGE("failed transaction: lock(BLOB)");
-                    return C2_CORRUPTED;
-                }
-            } else if (mMapper3) {
-                if (!mMapper3->lock(
-                        const_cast<native_handle_t*>(mBuffer),
-                        grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &pointer](const auto &maperr, const auto &mapPointer,
-                                         int32_t bytesPerPixel, int32_t bytesPerStride) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                pointer = mapPointer;
-                            }
-                            (void)bytesPerPixel;
-                            (void)bytesPerStride;
-                        }).isOk()) {
-                    ALOGE("failed transaction: lock(BLOB) (@3.0)");
-                    return C2_CORRUPTED;
-                }
-            } else {
-                if (!mMapper4->lock(
-                        const_cast<native_handle_t *>(mBuffer),
-                        grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &pointer](const auto &maperr, const auto &mapPointer) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                pointer = mapPointer;
-                            }
-                        }).isOk()) {
-                    ALOGE("failed transaction: lock(BLOB) (@4.0)");
-                    return C2_CORRUPTED;
-                }
-            }
-            if (err != C2_OK) {
-                ALOGD("lock failed: %d", err);
-                return err;
-            }
-
-            *addr = static_cast<uint8_t*>(pointer);
-            break;
-        }
-
-        case PixelFormat4::YCBCR_420_888:
+        case static_cast<uint32_t>(PixelFormat4::YCBCR_420_888):
             // fall-through
-        case PixelFormat4::YV12:
+        case static_cast<uint32_t>(PixelFormat4::YV12):
             // fall-through
         default: {
-            struct YCbCrLayout {
-                void* y;
-                void* cb;
-                void* cr;
-                uint32_t yStride;
-                uint32_t cStride;
-                uint32_t chromaStep;
-            };
-            YCbCrLayout ycbcrLayout;
-            if (mMapper2) {
-                if (!mMapper2->lockYCbCr(
-                        const_cast<native_handle_t *>(mBuffer), grallocUsage,
+            android_ycbcr ycbcrLayout;
+
+            status_t err = GraphicBufferMapper::get().lockYCbCr(
+                        const_cast<native_handle_t*>(mBuffer), grallocUsage,
                         { (int32_t)rect.left, (int32_t)rect.top,
                           (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &ycbcrLayout](const auto &maperr, const auto &mapLayout) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                ycbcrLayout = YCbCrLayout{
-                                        mapLayout.y,
-                                        mapLayout.cb,
-                                        mapLayout.cr,
-                                        mapLayout.yStride,
-                                        mapLayout.cStride,
-                                        mapLayout.chromaStep};
-                            }
-                        }).isOk()) {
-                    ALOGE("failed transaction: lockYCbCr");
-                    return C2_CORRUPTED;
-                }
-            } else if (mMapper3) {
-                if (!mMapper3->lockYCbCr(
-                        const_cast<native_handle_t *>(mBuffer), grallocUsage,
-                        { (int32_t)rect.left, (int32_t)rect.top,
-                          (int32_t)rect.width, (int32_t)rect.height },
-                        // TODO: fence
-                        hidl_handle(),
-                        [&err, &ycbcrLayout](const auto &maperr, const auto &mapLayout) {
-                            err = maperr2error(maperr);
-                            if (err == C2_OK) {
-                                ycbcrLayout = YCbCrLayout{
-                                        mapLayout.y,
-                                        mapLayout.cb,
-                                        mapLayout.cr,
-                                        mapLayout.yStride,
-                                        mapLayout.cStride,
-                                        mapLayout.chromaStep};
-                            }
-                        }).isOk()) {
-                    ALOGE("failed transaction: lockYCbCr (@3.0)");
-                    return C2_CORRUPTED;
-                }
-            } else {
-                // No device currently supports IMapper 4.0 so it is safe to just return an error
-                // code here.
-                //
-                // This will be supported by a combination of lock and BufferMetadata getters.
-                // We are going to refactor all the IAllocator/IMapper versioning code into a
-                // shared library. We will then add the IMapper 4.0 lockYCbCr support then.
-                ALOGE("failed transaction: lockYCbCr (@4.0)");
+                        &ycbcrLayout);
+            if (err) {
+                ALOGE("failed transaction: lockYCbCr");
                 return C2_CORRUPTED;
             }
-            if (err != C2_OK) {
-                ALOGD("lockYCbCr failed: %d", err);
-                return err;
-            }
+
             addr[C2PlanarLayout::PLANE_Y] = (uint8_t *)ycbcrLayout.y;
             addr[C2PlanarLayout::PLANE_U] = (uint8_t *)ycbcrLayout.cb;
             addr[C2PlanarLayout::PLANE_V] = (uint8_t *)ycbcrLayout.cr;
@@ -955,7 +546,7 @@
             layout->planes[C2PlanarLayout::PLANE_Y] = {
                 C2PlaneInfo::CHANNEL_Y,         // channel
                 1,                              // colInc
-                (int32_t)ycbcrLayout.yStride,   // rowInc
+                (int32_t)ycbcrLayout.ystride,   // rowInc
                 1,                              // mColSampling
                 1,                              // mRowSampling
                 8,                              // allocatedDepth
@@ -967,8 +558,8 @@
             };
             layout->planes[C2PlanarLayout::PLANE_U] = {
                 C2PlaneInfo::CHANNEL_CB,          // channel
-                (int32_t)ycbcrLayout.chromaStep,  // colInc
-                (int32_t)ycbcrLayout.cStride,     // rowInc
+                (int32_t)ycbcrLayout.chroma_step, // colInc
+                (int32_t)ycbcrLayout.cstride,     // rowInc
                 2,                                // mColSampling
                 2,                                // mRowSampling
                 8,                                // allocatedDepth
@@ -980,8 +571,8 @@
             };
             layout->planes[C2PlanarLayout::PLANE_V] = {
                 C2PlaneInfo::CHANNEL_CR,          // channel
-                (int32_t)ycbcrLayout.chromaStep,  // colInc
-                (int32_t)ycbcrLayout.cStride,     // rowInc
+                (int32_t)ycbcrLayout.chroma_step, // colInc
+                (int32_t)ycbcrLayout.cstride,     // rowInc
                 2,                                // mColSampling
                 2,                                // mRowSampling
                 8,                                // allocatedDepth
@@ -993,11 +584,11 @@
             };
             // handle interleaved formats
             intptr_t uvOffset = addr[C2PlanarLayout::PLANE_V] - addr[C2PlanarLayout::PLANE_U];
-            if (uvOffset > 0 && uvOffset < (intptr_t)ycbcrLayout.chromaStep) {
+            if (uvOffset > 0 && uvOffset < (intptr_t)ycbcrLayout.chroma_step) {
                 layout->rootPlanes = 2;
                 layout->planes[C2PlanarLayout::PLANE_V].rootIx = C2PlanarLayout::PLANE_U;
                 layout->planes[C2PlanarLayout::PLANE_V].offset = uvOffset;
-            } else if (uvOffset < 0 && uvOffset > -(intptr_t)ycbcrLayout.chromaStep) {
+            } else if (uvOffset < 0 && uvOffset > -(intptr_t)ycbcrLayout.chroma_step) {
                 layout->rootPlanes = 2;
                 layout->planes[C2PlanarLayout::PLANE_U].rootIx = C2PlanarLayout::PLANE_V;
                 layout->planes[C2PlanarLayout::PLANE_U].offset = -uvOffset;
@@ -1015,59 +606,18 @@
     // TODO: check addr and size, use fence
     (void)addr;
     (void)rect;
+    (void)fence;
 
     std::lock_guard<std::mutex> lock(mMappedLock);
-    c2_status_t err = C2_OK;
-    if (mMapper2) {
-        if (!mMapper2->unlock(
-                const_cast<native_handle_t *>(mBuffer),
-                [&err, &fence](const auto &maperr, const auto &releaseFence) {
-                    // TODO
-                    (void) fence;
-                    (void) releaseFence;
-                    err = maperr2error(maperr);
-                    if (err == C2_OK) {
-                        // TODO: fence
-                    }
-                }).isOk()) {
-            ALOGE("failed transaction: unlock");
-            return C2_CORRUPTED;
-        }
-    } else if (mMapper3) {
-        if (!mMapper3->unlock(
-                const_cast<native_handle_t *>(mBuffer),
-                [&err, &fence](const auto &maperr, const auto &releaseFence) {
-                    // TODO
-                    (void) fence;
-                    (void) releaseFence;
-                    err = maperr2error(maperr);
-                    if (err == C2_OK) {
-                        // TODO: fence
-                    }
-                }).isOk()) {
-            ALOGE("failed transaction: unlock (@3.0)");
-            return C2_CORRUPTED;
-        }
-    } else {
-        if (!mMapper4->unlock(
-                const_cast<native_handle_t *>(mBuffer),
-                [&err, &fence](const auto &maperr, const auto &releaseFence) {
-                    // TODO
-                    (void) fence;
-                    (void) releaseFence;
-                    err = maperr2error(maperr);
-                    if (err == C2_OK) {
-                        // TODO: fence
-                    }
-                }).isOk()) {
-            ALOGE("failed transaction: unlock (@4.0)");
-            return C2_CORRUPTED;
-        }
+    // TODO: fence
+    status_t err = GraphicBufferMapper::get().unlock(mBuffer);
+    if (err) {
+        ALOGE("failed transaction: unlock");
+        return C2_CORRUPTED;
     }
-    if (err == C2_OK) {
-        mLocked = false;
-    }
-    return err;
+
+    mLocked = false;
+    return C2_OK;
 }
 
 bool C2AllocationGralloc::equals(const std::shared_ptr<const C2GraphicAllocation> &other) const {
@@ -1104,12 +654,6 @@
 private:
     std::shared_ptr<C2Allocator::Traits> mTraits;
     c2_status_t mInit;
-    sp<IAllocator2> mAllocator2;
-    sp<IMapper2> mMapper2;
-    sp<IAllocator3> mAllocator3;
-    sp<IMapper3> mMapper3;
-    sp<IAllocator4> mAllocator4;
-    sp<IMapper4> mMapper4;
     const bool mBufferQueue;
 };
 
@@ -1127,27 +671,6 @@
     C2MemoryUsage minUsage = { 0, 0 }, maxUsage = { ~(uint64_t)0, ~(uint64_t)0 };
     Traits traits = { "android.allocator.gralloc", id, C2Allocator::GRAPHIC, minUsage, maxUsage };
     mTraits = std::make_shared<C2Allocator::Traits>(traits);
-
-    // gralloc allocator is a singleton, so all objects share a global service
-    mAllocator4 = IAllocator4::getService();
-    mMapper4 = IMapper4::getService();
-    if (!mAllocator4 || !mMapper4) {
-        mAllocator4 = nullptr;
-        mMapper4 = nullptr;
-        mAllocator3 = IAllocator3::getService();
-        mMapper3 = IMapper3::getService();
-        if (!mAllocator3 || !mMapper3) {
-            mAllocator3 = nullptr;
-            mMapper3 = nullptr;
-            mAllocator2 = IAllocator2::getService();
-            mMapper2 = IMapper2::getService();
-            if (!mAllocator2 || !mMapper2) {
-                mAllocator2 = nullptr;
-                mMapper2 = nullptr;
-                mInit = C2_CORRUPTED;
-            }
-        }
-    }
 }
 
 c2_status_t C2AllocatorGralloc::Impl::newGraphicAllocation(
@@ -1157,257 +680,59 @@
     ALOGV("allocating buffer with usage %#llx => %#llx",
           (long long)usage.expected, (long long)grallocUsage);
 
-    c2_status_t err = C2_OK;
-    hidl_handle buffer{};
+    buffer_handle_t buffer;
 
-    if (mMapper2) {
-        BufferDescriptorInfo2 info = {
-            {
-                width,
-                height,
-                1u,  // layerCount
-                PixelFormat2(format),
-                grallocUsage,
-            },
-            0u,  // stride placeholder
-        };
-        BufferDescriptor2 desc;
-        if (!mMapper2->createDescriptor(
-                info.mapperInfo, [&err, &desc](const auto &maperr, const auto &descriptor) {
-                    err = maperr2error(maperr);
-                    if (err == C2_OK) {
-                        desc = descriptor;
-                    }
-                }).isOk()) {
-            ALOGE("failed transaction: createDescriptor");
-            return C2_CORRUPTED;
-        }
-        if (err != C2_OK) {
-            return err;
-        }
+    uint32_t stride = 0;
 
-        // IAllocator shares IMapper error codes.
-        if (!mAllocator2->allocate(
-                desc,
-                1u,
-                [&err, &buffer, &info](const auto &maperr, const auto &stride, auto &buffers) {
-                    err = maperr2error(maperr);
-                    if (err != C2_OK) {
-                        return;
-                    }
-                    if (buffers.size() != 1u) {
-                        err = C2_CORRUPTED;
-                        return;
-                    }
-                    info.stride = stride;
-                    buffer = buffers[0];
-                }).isOk()) {
-            ALOGE("failed transaction: allocate");
-            return C2_CORRUPTED;
-        }
-        if (err != C2_OK) {
-            return err;
-        }
-        allocation->reset(new C2AllocationGralloc(
-                info, mMapper2, buffer,
-                C2HandleGralloc::WrapAndMoveNativeHandle(
-                        buffer.getNativeHandle(),
-                        width, height,
-                        format, grallocUsage, info.stride,
-                        0, 0, mBufferQueue ? ~0 : 0),
-                mTraits->id));
-        return C2_OK;
-    } else if (mMapper3) {
-        BufferDescriptorInfo3 info = {
-            {
-                width,
-                height,
-                1u,  // layerCount
-                PixelFormat4(format),
-                grallocUsage,
-            },
-            0u,  // stride placeholder
-        };
-        BufferDescriptor3 desc;
-        if (!mMapper3->createDescriptor(
-                info.mapperInfo, [&err, &desc](const auto &maperr, const auto &descriptor) {
-                    err = maperr2error(maperr);
-                    if (err == C2_OK) {
-                        desc = descriptor;
-                    }
-                }).isOk()) {
-            ALOGE("failed transaction: createDescriptor");
-            return C2_CORRUPTED;
-        }
-        if (err != C2_OK) {
-            return err;
-        }
-
-        // IAllocator shares IMapper error codes.
-        if (!mAllocator3->allocate(
-                desc,
-                1u,
-                [&err, &buffer, &info](const auto &maperr, const auto &stride, auto &buffers) {
-                    err = maperr2error(maperr);
-                    if (err != C2_OK) {
-                        return;
-                    }
-                    if (buffers.size() != 1u) {
-                        err = C2_CORRUPTED;
-                        return;
-                    }
-                    info.stride = stride;
-                    buffer = buffers[0];
-                }).isOk()) {
-            ALOGE("failed transaction: allocate");
-            return C2_CORRUPTED;
-        }
-        if (err != C2_OK) {
-            return err;
-        }
-        allocation->reset(new C2AllocationGralloc(
-                info, mMapper3, buffer,
-                C2HandleGralloc::WrapAndMoveNativeHandle(
-                        buffer.getNativeHandle(),
-                        width, height,
-                        format, grallocUsage, info.stride,
-                        0, 0, mBufferQueue ? ~0 : 0),
-                mTraits->id));
-        return C2_OK;
-    } else {
-        BufferDescriptorInfo4 info = {
-            {
-                "C2GrallocAllocation",
-                width,
-                height,
-                1u,  // layerCount
-                PixelFormat4(format),
-                grallocUsage,
-            },
-            0u,  // stride placeholder
-        };
-        BufferDescriptor4 desc;
-        if (!mMapper4->createDescriptor(
-                info.mapperInfo, [&err, &desc](const auto &maperr, const auto &descriptor) {
-                    err = maperr2error(maperr);
-                    if (err == C2_OK) {
-                        desc = descriptor;
-                    }
-                }).isOk()) {
-            ALOGE("failed transaction: createDescriptor");
-            return C2_CORRUPTED;
-        }
-        if (err != C2_OK) {
-            return err;
-        }
-
-        // IAllocator shares IMapper error codes.
-        if (!mAllocator4->allocate(
-                desc,
-                1u,
-                [&err, &buffer, &info](const auto &maperr, const auto &stride, auto &buffers) {
-                    err = maperr2error(maperr);
-                    if (err != C2_OK) {
-                        return;
-                    }
-                    if (buffers.size() != 1u) {
-                        err = C2_CORRUPTED;
-                        return;
-                    }
-                    info.stride = stride;
-                    buffer = buffers[0];
-                }).isOk()) {
-            ALOGE("failed transaction: allocate");
-            return C2_CORRUPTED;
-        }
-        if (err != C2_OK) {
-            return err;
-        }
-        allocation->reset(new C2AllocationGralloc(
-                info, mMapper4, buffer,
-                C2HandleGralloc::WrapAndMoveNativeHandle(
-                        buffer.getNativeHandle(),
-                        width, height,
-                        format, grallocUsage, info.stride,
-                        0, 0, mBufferQueue ? ~0 : 0),
-                mTraits->id));
-        return C2_OK;
+    status_t err = GraphicBufferAllocator::get().allocateRawHandle(width, height, format,
+            1u /* layer count */, grallocUsage, &buffer, &stride, "C2GrallocAllocation");
+    if (err) {
+        ALOGE("failed transaction: allocate");
+        return C2_CORRUPTED;
     }
+
+    hidl_handle hidlHandle;
+    hidlHandle.setTo(const_cast<native_handle_t*>(buffer), true);
+
+    allocation->reset(new C2AllocationGralloc(
+            width, height, format, 1u /* layer count */, grallocUsage, stride, hidlHandle,
+            C2HandleGralloc::WrapAndMoveNativeHandle(
+                    hidlHandle, width, height,
+                    format, grallocUsage, stride,
+                    0, 0, mBufferQueue ? ~0 : 0),
+            mTraits->id));
+    return C2_OK;
 }
 
 c2_status_t C2AllocatorGralloc::Impl::priorGraphicAllocation(
         const C2Handle *handle,
         std::shared_ptr<C2GraphicAllocation> *allocation) {
-    if (mMapper2) {
-        BufferDescriptorInfo2 info;
-        info.mapperInfo.layerCount = 1u;
-        uint32_t generation;
-        uint64_t igbp_id;
-        uint32_t igbp_slot;
-        const C2HandleGralloc *grallocHandle = C2HandleGralloc::Import(
-                handle,
-                &info.mapperInfo.width, &info.mapperInfo.height,
-                (uint32_t *)&info.mapperInfo.format,
-                (uint64_t *)&info.mapperInfo.usage,
-                &info.stride,
-                &generation, &igbp_id, &igbp_slot);
-        if (grallocHandle == nullptr) {
-            return C2_BAD_VALUE;
-        }
 
-        hidl_handle hidlHandle;
-        hidlHandle.setTo(C2HandleGralloc::UnwrapNativeHandle(grallocHandle), true);
+    uint32_t generation;
+    uint64_t igbp_id;
+    uint32_t igbp_slot;
 
-        allocation->reset(new C2AllocationGralloc(
-                info, mMapper2, hidlHandle, grallocHandle, mTraits->id));
-        return C2_OK;
-    } else if (mMapper3) {
-        BufferDescriptorInfo3 info;
-        info.mapperInfo.layerCount = 1u;
-        uint32_t generation;
-        uint64_t igbp_id;
-        uint32_t igbp_slot;
-        const C2HandleGralloc *grallocHandle = C2HandleGralloc::Import(
-                handle,
-                &info.mapperInfo.width, &info.mapperInfo.height,
-                (uint32_t *)&info.mapperInfo.format,
-                (uint64_t *)&info.mapperInfo.usage,
-                &info.stride,
-                &generation, &igbp_id, &igbp_slot);
-        if (grallocHandle == nullptr) {
-            return C2_BAD_VALUE;
-        }
+    uint32_t width;
+    uint32_t height;
+    uint32_t format;
+    uint32_t layerCount = 1;
+    uint64_t grallocUsage;
+    uint32_t stride;
 
-        hidl_handle hidlHandle;
-        hidlHandle.setTo(C2HandleGralloc::UnwrapNativeHandle(grallocHandle), true);
-
-        allocation->reset(new C2AllocationGralloc(
-                info, mMapper3, hidlHandle, grallocHandle, mTraits->id));
-        return C2_OK;
-    } else {
-        BufferDescriptorInfo4 info;
-        info.mapperInfo.layerCount = 1u;
-        uint32_t generation;
-        uint64_t igbp_id;
-        uint32_t igbp_slot;
-        const C2HandleGralloc *grallocHandle = C2HandleGralloc::Import(
-                handle,
-                &info.mapperInfo.width, &info.mapperInfo.height,
-                (uint32_t *)&info.mapperInfo.format,
-                (uint64_t *)&info.mapperInfo.usage,
-                &info.stride,
-                &generation, &igbp_id, &igbp_slot);
-        if (grallocHandle == nullptr) {
-            return C2_BAD_VALUE;
-        }
-
-        hidl_handle hidlHandle;
-        hidlHandle.setTo(C2HandleGralloc::UnwrapNativeHandle(grallocHandle), true);
-
-        allocation->reset(new C2AllocationGralloc(
-                info, mMapper4, hidlHandle, grallocHandle, mTraits->id));
-        return C2_OK;
+    const C2HandleGralloc *grallocHandle = C2HandleGralloc::Import(
+            handle, &width, &height, &format, &grallocUsage, &stride,
+            &generation, &igbp_id, &igbp_slot);
+    if (grallocHandle == nullptr) {
+        return C2_BAD_VALUE;
     }
+
+    hidl_handle hidlHandle;
+    hidlHandle.setTo(C2HandleGralloc::UnwrapNativeHandle(grallocHandle), true);
+
+    allocation->reset(new C2AllocationGralloc(
+            width, height, format, layerCount,
+            grallocUsage, stride, hidlHandle, grallocHandle, mTraits->id));
+    return C2_OK;
 }
 
 C2AllocatorGralloc::C2AllocatorGralloc(id_t id, bool bufferQueue)