DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (3cc34f31408f)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "libyuv.h"
#include "MacIOSurfaceHelpers.h"
#include "mozilla/gfx/MacIOSurface.h"
#include "YCbCrUtils.h"

namespace mozilla {

using namespace gfx;

namespace layers {

#define ALIGNED_32(x) ((x + 31) & ~31)
#define ALIGNEDPTR_32(x) \
  reinterpret_cast<uint8_t*>((reinterpret_cast<uintptr_t>(x) + 31) & ~31)

static already_AddRefed<SourceSurface>
CreateSourceSurfaceFromLockedMacIOSurface(MacIOSurface* aSurface) {
  size_t bytesPerRow = aSurface->GetBytesPerRow();
  size_t ioWidth = aSurface->GetDevicePixelWidth();
  size_t ioHeight = aSurface->GetDevicePixelHeight();
  SurfaceFormat ioFormat = aSurface->GetFormat();

  if ((ioFormat == SurfaceFormat::NV12 || ioFormat == SurfaceFormat::YUV422) &&
      (ioWidth > PlanarYCbCrImage::MAX_DIMENSION ||
       ioHeight > PlanarYCbCrImage::MAX_DIMENSION)) {
    return nullptr;
  }

  SurfaceFormat format =
      (ioFormat == SurfaceFormat::NV12 || ioFormat == SurfaceFormat::YUV422)
          ? SurfaceFormat::B8G8R8X8
          : SurfaceFormat::B8G8R8A8;

  RefPtr<DataSourceSurface> dataSurface = Factory::CreateDataSourceSurface(
      IntSize::Truncate(ioWidth, ioHeight), format);
  if (NS_WARN_IF(!dataSurface)) {
    return nullptr;
  }

  DataSourceSurface::MappedSurface mappedSurface;
  if (!dataSurface->Map(DataSourceSurface::WRITE, &mappedSurface)) {
    return nullptr;
  }

  if (ioFormat == SurfaceFormat::NV12) {
    /* Extract and separate the CbCr planes */
    size_t cbCrStride = aSurface->GetBytesPerRow(1);
    size_t cbCrWidth = aSurface->GetDevicePixelWidth(1);
    size_t cbCrHeight = aSurface->GetDevicePixelHeight(1);

    auto cbPlane = MakeUnique<uint8_t[]>(cbCrWidth * cbCrHeight);
    auto crPlane = MakeUnique<uint8_t[]>(cbCrWidth * cbCrHeight);

    uint8_t* src = (uint8_t*)aSurface->GetBaseAddressOfPlane(1);
    uint8_t* cbDest = cbPlane.get();
    uint8_t* crDest = crPlane.get();

    for (size_t i = 0; i < cbCrHeight; i++) {
      uint8_t* rowSrc = src + cbCrStride * i;
      for (size_t j = 0; j < cbCrWidth; j++) {
        *cbDest = *rowSrc;
        cbDest++;
        rowSrc++;
        *crDest = *rowSrc;
        crDest++;
        rowSrc++;
      }
    }

    /* Convert to RGB */
    PlanarYCbCrData data;
    data.mYChannel = (uint8_t*)aSurface->GetBaseAddressOfPlane(0);
    data.mYStride = aSurface->GetBytesPerRow(0);
    data.mYSize = IntSize::Truncate(ioWidth, ioHeight);
    data.mCbChannel = cbPlane.get();
    data.mCrChannel = crPlane.get();
    data.mCbCrStride = cbCrWidth;
    data.mCbCrSize = IntSize::Truncate(cbCrWidth, cbCrHeight);
    data.mPicSize = data.mYSize;
    data.mYUVColorSpace = aSurface->GetYUVColorSpace();
    data.mColorRange = aSurface->IsFullRange() ? gfx::ColorRange::FULL
                                               : gfx::ColorRange::LIMITED;

    ConvertYCbCrToRGB(data, SurfaceFormat::B8G8R8X8,
                      IntSize::Truncate(ioWidth, ioHeight), mappedSurface.mData,
                      mappedSurface.mStride);
  } else if (ioFormat == SurfaceFormat::YUV422) {
    if (ioWidth == ALIGNED_32(ioWidth)) {
      // Optimization when width is aligned to 32.
      IntSize size = IntSize::Truncate(ioWidth, ioHeight);
      libyuv::ConvertToARGB((uint8_t*)aSurface->GetBaseAddress(),
                            0 /* not used */, mappedSurface.mData,
                            mappedSurface.mStride, 0, 0, size.width,
                            size.height, size.width, size.height,
                            libyuv::kRotate0, libyuv::FOURCC_UYVY);
    } else {
      /* Convert to YV16 */
      size_t cbCrWidth = (ioWidth + 1) >> 1;
      size_t cbCrHeight = ioHeight;
      // Ensure our stride is a multiple of 32 to allow for memory aligned rows.
      size_t cbCrStride = ALIGNED_32(cbCrWidth);
      size_t strideDelta = cbCrStride - cbCrWidth;
      MOZ_ASSERT(strideDelta <= 31);

      auto yPlane = MakeUnique<uint8_t[]>(cbCrStride * 2 * ioHeight + 31);
      auto cbPlane = MakeUnique<uint8_t[]>(cbCrStride * cbCrHeight + 31);
      auto crPlane = MakeUnique<uint8_t[]>(cbCrStride * cbCrHeight + 31);

      uint8_t* src = (uint8_t*)aSurface->GetBaseAddress();
      uint8_t* yDest = ALIGNEDPTR_32(yPlane.get());
      uint8_t* cbDest = ALIGNEDPTR_32(cbPlane.get());
      uint8_t* crDest = ALIGNEDPTR_32(crPlane.get());

      for (size_t i = 0; i < ioHeight; i++) {
        uint8_t* rowSrc = src + bytesPerRow * i;
        for (size_t j = 0; j < cbCrWidth; j++) {
          *cbDest = *rowSrc;
          cbDest++;
          rowSrc++;
          *yDest = *rowSrc;
          yDest++;
          rowSrc++;
          *crDest = *rowSrc;
          crDest++;
          rowSrc++;
          *yDest = *rowSrc;
          yDest++;
          rowSrc++;
        }
        if (strideDelta) {
          cbDest += strideDelta;
          crDest += strideDelta;
          yDest += strideDelta << 1;
        }
      }

      /* Convert to RGB */
      PlanarYCbCrData data;
      data.mYChannel = ALIGNEDPTR_32(yPlane.get());
      data.mYStride = cbCrStride * 2;
      data.mYSize = IntSize::Truncate(ioWidth, ioHeight);
      data.mCbChannel = ALIGNEDPTR_32(cbPlane.get());
      data.mCrChannel = ALIGNEDPTR_32(crPlane.get());
      data.mCbCrStride = cbCrStride;
      data.mCbCrSize = IntSize::Truncate(cbCrWidth, cbCrHeight);
      data.mPicSize = data.mYSize;
      data.mYUVColorSpace = aSurface->GetYUVColorSpace();
      data.mColorRange = aSurface->IsFullRange() ? gfx::ColorRange::FULL
                                                 : gfx::ColorRange::LIMITED;

      ConvertYCbCrToRGB(data, SurfaceFormat::B8G8R8X8,
                        IntSize::Truncate(ioWidth, ioHeight),
                        mappedSurface.mData, mappedSurface.mStride);
    }
  } else {
    unsigned char* ioData = (unsigned char*)aSurface->GetBaseAddress();

    for (size_t i = 0; i < ioHeight; ++i) {
      memcpy(mappedSurface.mData + i * mappedSurface.mStride,
             ioData + i * bytesPerRow, ioWidth * 4);
    }
  }

  dataSurface->Unmap();

  return dataSurface.forget();
}

already_AddRefed<SourceSurface> CreateSourceSurfaceFromMacIOSurface(
    MacIOSurface* aSurface) {
  aSurface->Lock();
  RefPtr<SourceSurface> result =
      CreateSourceSurfaceFromLockedMacIOSurface(aSurface);
  aSurface->Unlock();
  return result.forget();
}

}  // namespace layers
}  // namespace mozilla