| /* |
| * Copyright 2018, 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_NDEBUG 0 |
| #define LOG_TAG "Codec2BufferUtils" |
| #include <utils/Log.h> |
| |
| #include <libyuv.h> |
| |
| #include <list> |
| #include <mutex> |
| |
| #include <android/hardware_buffer.h> |
| #include <media/hardware/HardwareAPI.h> |
| #include <media/stagefright/foundation/AUtils.h> |
| |
| #include <C2Debug.h> |
| |
| #include "Codec2BufferUtils.h" |
| |
| namespace android { |
| |
| namespace { |
| |
| /** |
| * A flippable, optimizable memcpy. Constructs such as (from ? src : dst) do not work as the results are |
| * always const. |
| */ |
| template<bool ToA, size_t S> |
| struct MemCopier { |
| template<typename A, typename B> |
| inline static void copy(A *a, const B *b, size_t size) { |
| __builtin_memcpy(a, b, size); |
| } |
| }; |
| |
| template<size_t S> |
| struct MemCopier<false, S> { |
| template<typename A, typename B> |
| inline static void copy(const A *a, B *b, size_t size) { |
| MemCopier<true, S>::copy(b, a, size); |
| } |
| }; |
| |
| /** |
| * Copies between a MediaImage and a graphic view. |
| * |
| * \param ToMediaImage whether to copy to (or from) the MediaImage |
| * \param view graphic view (could be ConstGraphicView or GraphicView depending on direction) |
| * \param img MediaImage data |
| * \param imgBase base of MediaImage (could be const uint8_t* or uint8_t* depending on direction) |
| */ |
| template<bool ToMediaImage, typename View, typename ImagePixel> |
| static status_t _ImageCopy(View &view, const MediaImage2 *img, ImagePixel *imgBase) { |
| // TODO: more efficient copying --- e.g. copy interleaved planes together, etc. |
| const C2PlanarLayout &layout = view.layout(); |
| const size_t bpp = divUp(img->mBitDepthAllocated, 8u); |
| |
| for (uint32_t i = 0; i < layout.numPlanes; ++i) { |
| typename std::conditional<ToMediaImage, uint8_t, const uint8_t>::type *imgRow = |
| imgBase + img->mPlane[i].mOffset; |
| typename std::conditional<ToMediaImage, const uint8_t, uint8_t>::type *viewRow = |
| viewRow = view.data()[i]; |
| const C2PlaneInfo &plane = layout.planes[i]; |
| if (plane.colSampling != img->mPlane[i].mHorizSubsampling |
| || plane.rowSampling != img->mPlane[i].mVertSubsampling |
| || plane.allocatedDepth != img->mBitDepthAllocated |
| || plane.allocatedDepth < plane.bitDepth |
| // MediaImage only supports MSB values |
| || plane.rightShift != plane.allocatedDepth - plane.bitDepth |
| || (bpp > 1 && plane.endianness != plane.NATIVE)) { |
| return BAD_VALUE; |
| } |
| |
| uint32_t planeW = img->mWidth / plane.colSampling; |
| uint32_t planeH = img->mHeight / plane.rowSampling; |
| |
| bool canCopyByRow = (plane.colInc == 1) && (img->mPlane[i].mColInc == 1); |
| bool canCopyByPlane = canCopyByRow && (plane.rowInc == img->mPlane[i].mRowInc); |
| if (canCopyByPlane) { |
| MemCopier<ToMediaImage, 0>::copy(imgRow, viewRow, plane.rowInc * planeH); |
| } else if (canCopyByRow) { |
| for (uint32_t row = 0; row < planeH; ++row) { |
| MemCopier<ToMediaImage, 0>::copy( |
| imgRow, viewRow, std::min(plane.rowInc, img->mPlane[i].mRowInc)); |
| imgRow += img->mPlane[i].mRowInc; |
| viewRow += plane.rowInc; |
| } |
| } else { |
| for (uint32_t row = 0; row < planeH; ++row) { |
| decltype(imgRow) imgPtr = imgRow; |
| decltype(viewRow) viewPtr = viewRow; |
| for (uint32_t col = 0; col < planeW; ++col) { |
| MemCopier<ToMediaImage, 0>::copy(imgPtr, viewPtr, bpp); |
| imgPtr += img->mPlane[i].mColInc; |
| viewPtr += plane.colInc; |
| } |
| imgRow += img->mPlane[i].mRowInc; |
| viewRow += plane.rowInc; |
| } |
| } |
| } |
| return OK; |
| } |
| |
| } // namespace |
| |
| status_t ImageCopy(uint8_t *imgBase, const MediaImage2 *img, const C2GraphicView &view) { |
| if (view.crop().width != img->mWidth || view.crop().height != img->mHeight) { |
| return BAD_VALUE; |
| } |
| const uint8_t* src_y = view.data()[0]; |
| const uint8_t* src_u = view.data()[1]; |
| const uint8_t* src_v = view.data()[2]; |
| int32_t src_stride_y = view.layout().planes[0].rowInc; |
| int32_t src_stride_u = view.layout().planes[1].rowInc; |
| int32_t src_stride_v = view.layout().planes[2].rowInc; |
| uint8_t* dst_y = imgBase + img->mPlane[0].mOffset; |
| uint8_t* dst_u = imgBase + img->mPlane[1].mOffset; |
| uint8_t* dst_v = imgBase + img->mPlane[2].mOffset; |
| int32_t dst_stride_y = img->mPlane[0].mRowInc; |
| int32_t dst_stride_u = img->mPlane[1].mRowInc; |
| int32_t dst_stride_v = img->mPlane[2].mRowInc; |
| int width = view.crop().width; |
| int height = view.crop().height; |
| |
| if (IsNV12(view)) { |
| if (IsNV12(img)) { |
| libyuv::CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height); |
| libyuv::CopyPlane(src_u, src_stride_u, dst_u, dst_stride_u, width, height / 2); |
| return OK; |
| } else if (IsNV21(img)) { |
| if (!libyuv::NV21ToNV12(src_y, src_stride_y, src_u, src_stride_u, |
| dst_y, dst_stride_y, dst_v, dst_stride_v, width, height)) { |
| return OK; |
| } |
| } else if (IsI420(img)) { |
| if (!libyuv::NV12ToI420(src_y, src_stride_y, src_u, src_stride_u, dst_y, dst_stride_y, |
| dst_u, dst_stride_u, dst_v, dst_stride_v, width, height)) { |
| return OK; |
| } |
| } |
| } else if (IsNV21(view)) { |
| if (IsNV12(img)) { |
| if (!libyuv::NV21ToNV12(src_y, src_stride_y, src_v, src_stride_v, |
| dst_y, dst_stride_y, dst_u, dst_stride_u, width, height)) { |
| return OK; |
| } |
| } else if (IsNV21(img)) { |
| libyuv::CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height); |
| libyuv::CopyPlane(src_v, src_stride_v, dst_v, dst_stride_v, width, height / 2); |
| return OK; |
| } else if (IsI420(img)) { |
| if (!libyuv::NV21ToI420(src_y, src_stride_y, src_v, src_stride_v, dst_y, dst_stride_y, |
| dst_u, dst_stride_u, dst_v, dst_stride_v, width, height)) { |
| return OK; |
| } |
| } |
| } else if (IsI420(view)) { |
| if (IsNV12(img)) { |
| if (!libyuv::I420ToNV12(src_y, src_stride_y, src_u, src_stride_u, src_v, src_stride_v, |
| dst_y, dst_stride_y, dst_u, dst_stride_u, width, height)) { |
| return OK; |
| } |
| } else if (IsNV21(img)) { |
| if (!libyuv::I420ToNV21(src_y, src_stride_y, src_u, src_stride_u, src_v, src_stride_v, |
| dst_y, dst_stride_y, dst_v, dst_stride_v, width, height)) { |
| return OK; |
| } |
| } else if (IsI420(img)) { |
| libyuv::CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height); |
| libyuv::CopyPlane(src_u, src_stride_u, dst_u, dst_stride_u, width / 2, height / 2); |
| libyuv::CopyPlane(src_v, src_stride_v, dst_v, dst_stride_v, width / 2, height / 2); |
| return OK; |
| } |
| } |
| return _ImageCopy<true>(view, img, imgBase); |
| } |
| |
| status_t ImageCopy(C2GraphicView &view, const uint8_t *imgBase, const MediaImage2 *img) { |
| if (view.crop().width != img->mWidth || view.crop().height != img->mHeight) { |
| return BAD_VALUE; |
| } |
| const uint8_t* src_y = imgBase + img->mPlane[0].mOffset; |
| const uint8_t* src_u = imgBase + img->mPlane[1].mOffset; |
| const uint8_t* src_v = imgBase + img->mPlane[2].mOffset; |
| int32_t src_stride_y = img->mPlane[0].mRowInc; |
| int32_t src_stride_u = img->mPlane[1].mRowInc; |
| int32_t src_stride_v = img->mPlane[2].mRowInc; |
| uint8_t* dst_y = view.data()[0]; |
| uint8_t* dst_u = view.data()[1]; |
| uint8_t* dst_v = view.data()[2]; |
| int32_t dst_stride_y = view.layout().planes[0].rowInc; |
| int32_t dst_stride_u = view.layout().planes[1].rowInc; |
| int32_t dst_stride_v = view.layout().planes[2].rowInc; |
| int width = view.crop().width; |
| int height = view.crop().height; |
| if (IsNV12(img)) { |
| if (IsNV12(view)) { |
| libyuv::CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height); |
| libyuv::CopyPlane(src_u, src_stride_u, dst_u, dst_stride_u, width, height / 2); |
| return OK; |
| } else if (IsNV21(view)) { |
| if (!libyuv::NV21ToNV12(src_y, src_stride_y, src_u, src_stride_u, |
| dst_y, dst_stride_y, dst_v, dst_stride_v, width, height)) { |
| return OK; |
| } |
| } else if (IsI420(view)) { |
| if (!libyuv::NV12ToI420(src_y, src_stride_y, src_u, src_stride_u, dst_y, dst_stride_y, |
| dst_u, dst_stride_u, dst_v, dst_stride_v, width, height)) { |
| return OK; |
| } |
| } |
| } else if (IsNV21(img)) { |
| if (IsNV12(view)) { |
| if (!libyuv::NV21ToNV12(src_y, src_stride_y, src_v, src_stride_v, |
| dst_y, dst_stride_y, dst_u, dst_stride_u, width, height)) { |
| return OK; |
| } |
| } else if (IsNV21(view)) { |
| libyuv::CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height); |
| libyuv::CopyPlane(src_v, src_stride_v, dst_v, dst_stride_v, width, height / 2); |
| return OK; |
| } else if (IsI420(view)) { |
| if (!libyuv::NV21ToI420(src_y, src_stride_y, src_v, src_stride_v, dst_y, dst_stride_y, |
| dst_u, dst_stride_u, dst_v, dst_stride_v, width, height)) { |
| return OK; |
| } |
| } |
| } else if (IsI420(img)) { |
| if (IsNV12(view)) { |
| if (!libyuv::I420ToNV12(src_y, src_stride_y, src_u, src_stride_u, src_v, src_stride_v, |
| dst_y, dst_stride_y, dst_u, dst_stride_u, width, height)) { |
| return OK; |
| } |
| } else if (IsNV21(view)) { |
| if (!libyuv::I420ToNV21(src_y, src_stride_y, src_u, src_stride_u, src_v, src_stride_v, |
| dst_y, dst_stride_y, dst_v, dst_stride_v, width, height)) { |
| return OK; |
| } |
| } else if (IsI420(view)) { |
| libyuv::CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height); |
| libyuv::CopyPlane(src_u, src_stride_u, dst_u, dst_stride_u, width / 2, height / 2); |
| libyuv::CopyPlane(src_v, src_stride_v, dst_v, dst_stride_v, width / 2, height / 2); |
| return OK; |
| } |
| } |
| return _ImageCopy<false>(view, img, imgBase); |
| } |
| |
| bool IsYUV420(const C2GraphicView &view) { |
| const C2PlanarLayout &layout = view.layout(); |
| return (layout.numPlanes == 3 |
| && layout.type == C2PlanarLayout::TYPE_YUV |
| && layout.planes[layout.PLANE_Y].channel == C2PlaneInfo::CHANNEL_Y |
| && layout.planes[layout.PLANE_Y].allocatedDepth == 8 |
| && layout.planes[layout.PLANE_Y].bitDepth == 8 |
| && layout.planes[layout.PLANE_Y].rightShift == 0 |
| && layout.planes[layout.PLANE_Y].colSampling == 1 |
| && layout.planes[layout.PLANE_Y].rowSampling == 1 |
| && layout.planes[layout.PLANE_U].channel == C2PlaneInfo::CHANNEL_CB |
| && layout.planes[layout.PLANE_U].allocatedDepth == 8 |
| && layout.planes[layout.PLANE_U].bitDepth == 8 |
| && layout.planes[layout.PLANE_U].rightShift == 0 |
| && layout.planes[layout.PLANE_U].colSampling == 2 |
| && layout.planes[layout.PLANE_U].rowSampling == 2 |
| && layout.planes[layout.PLANE_V].channel == C2PlaneInfo::CHANNEL_CR |
| && layout.planes[layout.PLANE_V].allocatedDepth == 8 |
| && layout.planes[layout.PLANE_V].bitDepth == 8 |
| && layout.planes[layout.PLANE_V].rightShift == 0 |
| && layout.planes[layout.PLANE_V].colSampling == 2 |
| && layout.planes[layout.PLANE_V].rowSampling == 2); |
| } |
| |
| bool IsNV12(const C2GraphicView &view) { |
| if (!IsYUV420(view)) { |
| return false; |
| } |
| const C2PlanarLayout &layout = view.layout(); |
| return (layout.rootPlanes == 2 |
| && layout.planes[layout.PLANE_U].colInc == 2 |
| && layout.planes[layout.PLANE_U].rootIx == layout.PLANE_U |
| && layout.planes[layout.PLANE_U].offset == 0 |
| && layout.planes[layout.PLANE_V].colInc == 2 |
| && layout.planes[layout.PLANE_V].rootIx == layout.PLANE_U |
| && layout.planes[layout.PLANE_V].offset == 1); |
| } |
| |
| bool IsNV21(const C2GraphicView &view) { |
| if (!IsYUV420(view)) { |
| return false; |
| } |
| const C2PlanarLayout &layout = view.layout(); |
| return (layout.rootPlanes == 2 |
| && layout.planes[layout.PLANE_U].colInc == 2 |
| && layout.planes[layout.PLANE_U].rootIx == layout.PLANE_V |
| && layout.planes[layout.PLANE_U].offset == 1 |
| && layout.planes[layout.PLANE_V].colInc == 2 |
| && layout.planes[layout.PLANE_V].rootIx == layout.PLANE_V |
| && layout.planes[layout.PLANE_V].offset == 0); |
| } |
| |
| bool IsI420(const C2GraphicView &view) { |
| if (!IsYUV420(view)) { |
| return false; |
| } |
| const C2PlanarLayout &layout = view.layout(); |
| return (layout.rootPlanes == 3 |
| && layout.planes[layout.PLANE_U].colInc == 1 |
| && layout.planes[layout.PLANE_U].rootIx == layout.PLANE_U |
| && layout.planes[layout.PLANE_U].offset == 0 |
| && layout.planes[layout.PLANE_V].colInc == 1 |
| && layout.planes[layout.PLANE_V].rootIx == layout.PLANE_V |
| && layout.planes[layout.PLANE_V].offset == 0); |
| } |
| |
| bool IsYUV420(const MediaImage2 *img) { |
| return (img->mType == MediaImage2::MEDIA_IMAGE_TYPE_YUV |
| && img->mNumPlanes == 3 |
| && img->mBitDepth == 8 |
| && img->mBitDepthAllocated == 8 |
| && img->mPlane[0].mHorizSubsampling == 1 |
| && img->mPlane[0].mVertSubsampling == 1 |
| && img->mPlane[1].mHorizSubsampling == 2 |
| && img->mPlane[1].mVertSubsampling == 2 |
| && img->mPlane[2].mHorizSubsampling == 2 |
| && img->mPlane[2].mVertSubsampling == 2); |
| } |
| |
| bool IsNV12(const MediaImage2 *img) { |
| if (!IsYUV420(img)) { |
| return false; |
| } |
| return (img->mPlane[1].mColInc == 2 |
| && img->mPlane[2].mColInc == 2 |
| && (img->mPlane[2].mOffset == img->mPlane[1].mOffset + 1)); |
| } |
| |
| bool IsNV21(const MediaImage2 *img) { |
| if (!IsYUV420(img)) { |
| return false; |
| } |
| return (img->mPlane[1].mColInc == 2 |
| && img->mPlane[2].mColInc == 2 |
| && (img->mPlane[1].mOffset == img->mPlane[2].mOffset + 1)); |
| } |
| |
| bool IsI420(const MediaImage2 *img) { |
| if (!IsYUV420(img)) { |
| return false; |
| } |
| return (img->mPlane[1].mColInc == 1 |
| && img->mPlane[2].mColInc == 1 |
| && img->mPlane[2].mOffset > img->mPlane[1].mOffset); |
| } |
| |
| FlexLayout GetYuv420FlexibleLayout() { |
| static FlexLayout sLayout = []{ |
| AHardwareBuffer_Desc desc = { |
| 16, // width |
| 16, // height |
| 1, // layers |
| AHARDWAREBUFFER_FORMAT_Y8Cb8Cr8_420, |
| AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN | AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN, |
| 0, // stride |
| 0, // rfu0 |
| 0, // rfu1 |
| }; |
| AHardwareBuffer *buffer = nullptr; |
| int ret = AHardwareBuffer_allocate(&desc, &buffer); |
| if (ret != 0) { |
| return FLEX_LAYOUT_UNKNOWN; |
| } |
| class AutoCloser { |
| public: |
| AutoCloser(AHardwareBuffer *buffer) : mBuffer(buffer), mLocked(false) {} |
| ~AutoCloser() { |
| if (mLocked) { |
| AHardwareBuffer_unlock(mBuffer, nullptr); |
| } |
| AHardwareBuffer_release(mBuffer); |
| } |
| |
| void setLocked() { mLocked = true; } |
| |
| private: |
| AHardwareBuffer *mBuffer; |
| bool mLocked; |
| } autoCloser(buffer); |
| AHardwareBuffer_Planes planes; |
| ret = AHardwareBuffer_lockPlanes( |
| buffer, |
| AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN | AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN, |
| -1, // fence |
| nullptr, // rect |
| &planes); |
| if (ret != 0) { |
| AHardwareBuffer_release(buffer); |
| return FLEX_LAYOUT_UNKNOWN; |
| } |
| autoCloser.setLocked(); |
| if (planes.planeCount != 3) { |
| return FLEX_LAYOUT_UNKNOWN; |
| } |
| if (planes.planes[0].pixelStride != 1) { |
| return FLEX_LAYOUT_UNKNOWN; |
| } |
| if (planes.planes[1].pixelStride == 1 && planes.planes[2].pixelStride == 1) { |
| return FLEX_LAYOUT_PLANAR; |
| } |
| if (planes.planes[1].pixelStride == 2 && planes.planes[2].pixelStride == 2) { |
| ssize_t uvDist = |
| static_cast<uint8_t *>(planes.planes[2].data) - |
| static_cast<uint8_t *>(planes.planes[1].data); |
| if (uvDist == 1) { |
| return FLEX_LAYOUT_SEMIPLANAR_UV; |
| } else if (uvDist == -1) { |
| return FLEX_LAYOUT_SEMIPLANAR_VU; |
| } |
| return FLEX_LAYOUT_UNKNOWN; |
| } |
| return FLEX_LAYOUT_UNKNOWN; |
| }(); |
| return sLayout; |
| } |
| |
| MediaImage2 CreateYUV420PlanarMediaImage2( |
| uint32_t width, uint32_t height, uint32_t stride, uint32_t vstride) { |
| return MediaImage2 { |
| .mType = MediaImage2::MEDIA_IMAGE_TYPE_YUV, |
| .mNumPlanes = 3, |
| .mWidth = width, |
| .mHeight = height, |
| .mBitDepth = 8, |
| .mBitDepthAllocated = 8, |
| .mPlane = { |
| { |
| .mOffset = 0, |
| .mColInc = 1, |
| .mRowInc = (int32_t)stride, |
| .mHorizSubsampling = 1, |
| .mVertSubsampling = 1, |
| }, |
| { |
| .mOffset = stride * vstride, |
| .mColInc = 1, |
| .mRowInc = (int32_t)stride / 2, |
| .mHorizSubsampling = 2, |
| .mVertSubsampling = 2, |
| }, |
| { |
| .mOffset = stride * vstride * 5 / 4, |
| .mColInc = 1, |
| .mRowInc = (int32_t)stride / 2, |
| .mHorizSubsampling = 2, |
| .mVertSubsampling = 2, |
| } |
| }, |
| }; |
| } |
| |
| MediaImage2 CreateYUV420SemiPlanarMediaImage2( |
| uint32_t width, uint32_t height, uint32_t stride, uint32_t vstride) { |
| return MediaImage2 { |
| .mType = MediaImage2::MEDIA_IMAGE_TYPE_YUV, |
| .mNumPlanes = 3, |
| .mWidth = width, |
| .mHeight = height, |
| .mBitDepth = 8, |
| .mBitDepthAllocated = 8, |
| .mPlane = { |
| { |
| .mOffset = 0, |
| .mColInc = 1, |
| .mRowInc = (int32_t)stride, |
| .mHorizSubsampling = 1, |
| .mVertSubsampling = 1, |
| }, |
| { |
| .mOffset = stride * vstride, |
| .mColInc = 2, |
| .mRowInc = (int32_t)stride, |
| .mHorizSubsampling = 2, |
| .mVertSubsampling = 2, |
| }, |
| { |
| .mOffset = stride * vstride + 1, |
| .mColInc = 2, |
| .mRowInc = (int32_t)stride, |
| .mHorizSubsampling = 2, |
| .mVertSubsampling = 2, |
| } |
| }, |
| }; |
| } |
| |
| status_t ConvertRGBToPlanarYUV( |
| uint8_t *dstY, size_t dstStride, size_t dstVStride, size_t bufferSize, |
| const C2GraphicView &src) { |
| CHECK(dstY != nullptr); |
| CHECK((src.width() & 1) == 0); |
| CHECK((src.height() & 1) == 0); |
| |
| if (dstStride * dstVStride * 3 / 2 > bufferSize) { |
| ALOGD("conversion buffer is too small for converting from RGB to YUV"); |
| return NO_MEMORY; |
| } |
| |
| uint8_t *dstU = dstY + dstStride * dstVStride; |
| uint8_t *dstV = dstU + (dstStride >> 1) * (dstVStride >> 1); |
| |
| const C2PlanarLayout &layout = src.layout(); |
| const uint8_t *pRed = src.data()[C2PlanarLayout::PLANE_R]; |
| const uint8_t *pGreen = src.data()[C2PlanarLayout::PLANE_G]; |
| const uint8_t *pBlue = src.data()[C2PlanarLayout::PLANE_B]; |
| |
| #define CLIP3(x,y,z) (((z) < (x)) ? (x) : (((z) > (y)) ? (y) : (z))) |
| for (size_t y = 0; y < src.height(); ++y) { |
| for (size_t x = 0; x < src.width(); ++x) { |
| uint8_t red = *pRed; |
| uint8_t green = *pGreen; |
| uint8_t blue = *pBlue; |
| |
| // using ITU-R BT.601 conversion matrix |
| unsigned luma = |
| CLIP3(0, (((red * 66 + green * 129 + blue * 25) >> 8) + 16), 255); |
| |
| dstY[x] = luma; |
| |
| if ((x & 1) == 0 && (y & 1) == 0) { |
| unsigned U = |
| CLIP3(0, (((-red * 38 - green * 74 + blue * 112) >> 8) + 128), 255); |
| |
| unsigned V = |
| CLIP3(0, (((red * 112 - green * 94 - blue * 18) >> 8) + 128), 255); |
| |
| dstU[x >> 1] = U; |
| dstV[x >> 1] = V; |
| } |
| pRed += layout.planes[C2PlanarLayout::PLANE_R].colInc; |
| pGreen += layout.planes[C2PlanarLayout::PLANE_G].colInc; |
| pBlue += layout.planes[C2PlanarLayout::PLANE_B].colInc; |
| } |
| |
| if ((y & 1) == 0) { |
| dstU += dstStride >> 1; |
| dstV += dstStride >> 1; |
| } |
| |
| pRed -= layout.planes[C2PlanarLayout::PLANE_R].colInc * src.width(); |
| pGreen -= layout.planes[C2PlanarLayout::PLANE_G].colInc * src.width(); |
| pBlue -= layout.planes[C2PlanarLayout::PLANE_B].colInc * src.width(); |
| pRed += layout.planes[C2PlanarLayout::PLANE_R].rowInc; |
| pGreen += layout.planes[C2PlanarLayout::PLANE_G].rowInc; |
| pBlue += layout.planes[C2PlanarLayout::PLANE_B].rowInc; |
| |
| dstY += dstStride; |
| } |
| return OK; |
| } |
| |
| namespace { |
| |
| /** |
| * A block of raw allocated memory. |
| */ |
| struct MemoryBlockPoolBlock { |
| MemoryBlockPoolBlock(size_t size) |
| : mData(new uint8_t[size]), mSize(mData ? size : 0) { } |
| |
| ~MemoryBlockPoolBlock() { |
| delete[] mData; |
| } |
| |
| const uint8_t *data() const { |
| return mData; |
| } |
| |
| size_t size() const { |
| return mSize; |
| } |
| |
| C2_DO_NOT_COPY(MemoryBlockPoolBlock); |
| |
| private: |
| uint8_t *mData; |
| size_t mSize; |
| }; |
| |
| /** |
| * A simple raw memory block pool implementation. |
| */ |
| struct MemoryBlockPoolImpl { |
| void release(std::list<MemoryBlockPoolBlock>::const_iterator block) { |
| std::lock_guard<std::mutex> lock(mMutex); |
| // return block to free blocks if it is the current size; otherwise, discard |
| if (block->size() == mCurrentSize) { |
| mFreeBlocks.splice(mFreeBlocks.begin(), mBlocksInUse, block); |
| } else { |
| mBlocksInUse.erase(block); |
| } |
| } |
| |
| std::list<MemoryBlockPoolBlock>::const_iterator fetch(size_t size) { |
| std::lock_guard<std::mutex> lock(mMutex); |
| mFreeBlocks.remove_if([size](const MemoryBlockPoolBlock &block) -> bool { |
| return block.size() != size; |
| }); |
| mCurrentSize = size; |
| if (mFreeBlocks.empty()) { |
| mBlocksInUse.emplace_front(size); |
| } else { |
| mBlocksInUse.splice(mBlocksInUse.begin(), mFreeBlocks, mFreeBlocks.begin()); |
| } |
| return mBlocksInUse.begin(); |
| } |
| |
| MemoryBlockPoolImpl() = default; |
| |
| C2_DO_NOT_COPY(MemoryBlockPoolImpl); |
| |
| private: |
| std::mutex mMutex; |
| std::list<MemoryBlockPoolBlock> mFreeBlocks; |
| std::list<MemoryBlockPoolBlock> mBlocksInUse; |
| size_t mCurrentSize; |
| }; |
| |
| } // namespace |
| |
| struct MemoryBlockPool::Impl : MemoryBlockPoolImpl { |
| }; |
| |
| struct MemoryBlock::Impl { |
| Impl(std::list<MemoryBlockPoolBlock>::const_iterator block, |
| std::shared_ptr<MemoryBlockPoolImpl> pool) |
| : mBlock(block), mPool(pool) { |
| } |
| |
| ~Impl() { |
| mPool->release(mBlock); |
| } |
| |
| const uint8_t *data() const { |
| return mBlock->data(); |
| } |
| |
| size_t size() const { |
| return mBlock->size(); |
| } |
| |
| private: |
| std::list<MemoryBlockPoolBlock>::const_iterator mBlock; |
| std::shared_ptr<MemoryBlockPoolImpl> mPool; |
| }; |
| |
| MemoryBlock MemoryBlockPool::fetch(size_t size) { |
| std::list<MemoryBlockPoolBlock>::const_iterator poolBlock = mImpl->fetch(size); |
| return MemoryBlock(std::make_shared<MemoryBlock::Impl>( |
| poolBlock, std::static_pointer_cast<MemoryBlockPoolImpl>(mImpl))); |
| } |
| |
| MemoryBlockPool::MemoryBlockPool() |
| : mImpl(std::make_shared<MemoryBlockPool::Impl>()) { |
| } |
| |
| MemoryBlock::MemoryBlock(std::shared_ptr<MemoryBlock::Impl> impl) |
| : mImpl(impl) { |
| } |
| |
| MemoryBlock::MemoryBlock() = default; |
| |
| MemoryBlock::~MemoryBlock() = default; |
| |
| const uint8_t* MemoryBlock::data() const { |
| return mImpl ? mImpl->data() : nullptr; |
| } |
| |
| size_t MemoryBlock::size() const { |
| return mImpl ? mImpl->size() : 0; |
| } |
| |
| MemoryBlock MemoryBlock::Allocate(size_t size) { |
| return MemoryBlockPool().fetch(size); |
| } |
| |
| } // namespace android |