1 files changed, 495 insertions, 0 deletions
diff --git a/xbmc/guilib/Texture.cpp b/xbmc/guilib/Texture.cpp
new file mode 100644
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+++ b/xbmc/guilib/Texture.cpp
@@ -0,0 +1,495 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include "Texture.h"
+
+#include "DDSImage.h"
+#include "ServiceBroker.h"
+#include "URL.h"
+#include "commons/ilog.h"
+#include "filesystem/File.h"
+#include "filesystem/ResourceFile.h"
+#include "filesystem/XbtFile.h"
+#include "guilib/iimage.h"
+#include "guilib/imagefactory.h"
+#include "utils/URIUtils.h"
+#include "utils/log.h"
+#if defined(TARGET_DARWIN_EMBEDDED)
+#include <ImageIO/ImageIO.h>
+#include "filesystem/File.h"
+#endif
+#if defined(TARGET_ANDROID)
+#include "platform/android/filesystem/AndroidAppFile.h"
+#endif
+#include "rendering/RenderSystem.h"
+#include "utils/MemUtils.h"
+
+#include <algorithm>
+#include <cstring>
+#include <exception>
+#include <utility>
+
+/************************************************************************/
+/*                                                                      */
+/************************************************************************/
+CTexture::CTexture(unsigned int width, unsigned int height, unsigned int format)
+{
+  m_pixels = NULL;
+  m_loadedToGPU = false;
+  Allocate(width, height, format);
+}
+
+CTexture::~CTexture()
+{
+  KODI::MEMORY::AlignedFree(m_pixels);
+  m_pixels = NULL;
+}
+
+void CTexture::Allocate(unsigned int width, unsigned int height, unsigned int format)
+{
+  m_imageWidth = m_originalWidth = width;
+  m_imageHeight = m_originalHeight = height;
+  m_format = format;
+  m_orientation = 0;
+
+  m_textureWidth = m_imageWidth;
+  m_textureHeight = m_imageHeight;
+
+  if (m_format & XB_FMT_DXT_MASK)
+  {
+    while (GetPitch() < CServiceBroker::GetRenderSystem()->GetMinDXTPitch())
+      m_textureWidth += GetBlockSize();
+  }
+
+  if (!CServiceBroker::GetRenderSystem()->SupportsNPOT((m_format & XB_FMT_DXT_MASK) != 0))
+  {
+    m_textureWidth = PadPow2(m_textureWidth);
+    m_textureHeight = PadPow2(m_textureHeight);
+  }
+
+  if (m_format & XB_FMT_DXT_MASK)
+  {
+    // DXT textures must be a multiple of 4 in width and height
+    m_textureWidth = ((m_textureWidth + 3) / 4) * 4;
+    m_textureHeight = ((m_textureHeight + 3) / 4) * 4;
+  }
+  else
+  {
+    // align all textures so that they have an even width
+    // in some circumstances when we downsize a thumbnail
+    // which has an uneven number of pixels in width
+    // we crash in CPicture::ScaleImage in ffmpegs swscale
+    // because it tries to access beyond the source memory
+    // (happens on osx and ios)
+    // UPDATE: don't just update to be on an even width;
+    // ffmpegs swscale relies on a 16-byte stride on some systems
+    // so the textureWidth needs to be a multiple of 16. see ffmpeg
+    // swscale headers for more info.
+    m_textureWidth = ((m_textureWidth + 15) / 16) * 16;
+  }
+
+  // check for max texture size
+  #define CLAMP(x, y) { if (x > y) x = y; }
+  CLAMP(m_textureWidth, CServiceBroker::GetRenderSystem()->GetMaxTextureSize());
+  CLAMP(m_textureHeight, CServiceBroker::GetRenderSystem()->GetMaxTextureSize());
+  CLAMP(m_imageWidth, m_textureWidth);
+  CLAMP(m_imageHeight, m_textureHeight);
+
+  KODI::MEMORY::AlignedFree(m_pixels);
+  m_pixels = NULL;
+  if (GetPitch() * GetRows() > 0)
+  {
+    size_t size = GetPitch() * GetRows();
+    m_pixels = static_cast<unsigned char*>(KODI::MEMORY::AlignedMalloc(size, 32));
+
+    if (m_pixels == nullptr)
+    {
+      CLog::Log(LOGERROR, "{} - Could not allocate {} bytes. Out of memory.", __FUNCTION__, size);
+    }
+  }
+}
+
+void CTexture::Update(unsigned int width,
+                      unsigned int height,
+                      unsigned int pitch,
+                      unsigned int format,
+                      const unsigned char* pixels,
+                      bool loadToGPU)
+{
+  if (pixels == NULL)
+    return;
+
+  if (format & XB_FMT_DXT_MASK)
+    return;
+
+  Allocate(width, height, format);
+
+  if (m_pixels == nullptr)
+    return;
+
+  unsigned int srcPitch = pitch ? pitch : GetPitch(width);
+  unsigned int srcRows = GetRows(height);
+  unsigned int dstPitch = GetPitch(m_textureWidth);
+  unsigned int dstRows = GetRows(m_textureHeight);
+
+  if (srcPitch == dstPitch)
+    memcpy(m_pixels, pixels, srcPitch * std::min(srcRows, dstRows));
+  else
+  {
+    const unsigned char *src = pixels;
+    unsigned char* dst = m_pixels;
+    for (unsigned int y = 0; y < srcRows && y < dstRows; y++)
+    {
+      memcpy(dst, src, std::min(srcPitch, dstPitch));
+      src += srcPitch;
+      dst += dstPitch;
+    }
+  }
+  ClampToEdge();
+
+  if (loadToGPU)
+    LoadToGPU();
+}
+
+void CTexture::ClampToEdge()
+{
+  if (m_pixels == nullptr)
+    return;
+
+  unsigned int imagePitch = GetPitch(m_imageWidth);
+  unsigned int imageRows = GetRows(m_imageHeight);
+  unsigned int texturePitch = GetPitch(m_textureWidth);
+  unsigned int textureRows = GetRows(m_textureHeight);
+  if (imagePitch < texturePitch)
+  {
+    unsigned int blockSize = GetBlockSize();
+    unsigned char *src = m_pixels + imagePitch - blockSize;
+    unsigned char *dst = m_pixels;
+    for (unsigned int y = 0; y < imageRows; y++)
+    {
+      for (unsigned int x = imagePitch; x < texturePitch; x += blockSize)
+        memcpy(dst + x, src, blockSize);
+      dst += texturePitch;
+    }
+  }
+
+  if (imageRows < textureRows)
+  {
+    unsigned char *dst = m_pixels + imageRows * texturePitch;
+    for (unsigned int y = imageRows; y < textureRows; y++)
+    {
+      memcpy(dst, dst - texturePitch, texturePitch);
+      dst += texturePitch;
+    }
+  }
+}
+
+std::unique_ptr<CTexture> CTexture::LoadFromFile(const std::string& texturePath,
+                                                 unsigned int idealWidth,
+                                                 unsigned int idealHeight,
+                                                 bool requirePixels,
+                                                 const std::string& strMimeType)
+{
+#if defined(TARGET_ANDROID)
+  CURL url(texturePath);
+  if (url.IsProtocol("androidapp"))
+  {
+    XFILE::CFileAndroidApp file;
+    if (file.Open(url))
+    {
+      unsigned char* inputBuff;
+      unsigned int width;
+      unsigned int height;
+      unsigned int inputBuffSize = file.ReadIcon(&inputBuff, &width, &height);
+      file.Close();
+      if (!inputBuffSize)
+        return NULL;
+
+      std::unique_ptr<CTexture> texture = CTexture::CreateTexture();
+      texture->LoadFromMemory(width, height, width*4, XB_FMT_RGBA8, true, inputBuff);
+      delete[] inputBuff;
+      return texture;
+    }
+  }
+#endif
+  std::unique_ptr<CTexture> texture = CTexture::CreateTexture();
+  if (texture->LoadFromFileInternal(texturePath, idealWidth, idealHeight, requirePixels, strMimeType))
+    return texture;
+  return {};
+}
+
+std::unique_ptr<CTexture> CTexture::LoadFromFileInMemory(unsigned char* buffer,
+                                                         size_t bufferSize,
+                                                         const std::string& mimeType,
+                                                         unsigned int idealWidth,
+                                                         unsigned int idealHeight)
+{
+  std::unique_ptr<CTexture> texture = CTexture::CreateTexture();
+  if (texture->LoadFromFileInMem(buffer, bufferSize, mimeType, idealWidth, idealHeight))
+    return texture;
+  return {};
+}
+
+bool CTexture::LoadFromFileInternal(const std::string& texturePath,
+                                    unsigned int maxWidth,
+                                    unsigned int maxHeight,
+                                    bool requirePixels,
+                                    const std::string& strMimeType)
+{
+  if (URIUtils::HasExtension(texturePath, ".dds"))
+  { // special case for DDS images
+    CDDSImage image;
+    if (image.ReadFile(texturePath))
+    {
+      Update(image.GetWidth(), image.GetHeight(), 0, image.GetFormat(), image.GetData(), false);
+      return true;
+    }
+    return false;
+  }
+
+  unsigned int width = maxWidth ? std::min(maxWidth, CServiceBroker::GetRenderSystem()->GetMaxTextureSize()) :
+                                  CServiceBroker::GetRenderSystem()->GetMaxTextureSize();
+  unsigned int height = maxHeight ? std::min(maxHeight, CServiceBroker::GetRenderSystem()->GetMaxTextureSize()) :
+                                    CServiceBroker::GetRenderSystem()->GetMaxTextureSize();
+
+  // Read image into memory to use our vfs
+  XFILE::CFile file;
+  std::vector<uint8_t> buf;
+
+  if (file.LoadFile(texturePath, buf) <= 0)
+    return false;
+
+  CURL url(texturePath);
+  // make sure resource:// paths are properly resolved
+  if (url.IsProtocol("resource"))
+  {
+    std::string translatedPath;
+    if (XFILE::CResourceFile::TranslatePath(url, translatedPath))
+      url.Parse(translatedPath);
+  }
+
+  // handle xbt:// paths differently because it allows loading the texture directly from memory
+  if (url.IsProtocol("xbt"))
+  {
+    XFILE::CXbtFile xbtFile;
+    if (!xbtFile.Open(url))
+      return false;
+
+    return LoadFromMemory(xbtFile.GetImageWidth(), xbtFile.GetImageHeight(), 0,
+                          xbtFile.GetImageFormat(), xbtFile.HasImageAlpha(), buf.data());
+  }
+
+  IImage* pImage;
+
+  if(strMimeType.empty())
+    pImage = ImageFactory::CreateLoader(texturePath);
+  else
+    pImage = ImageFactory::CreateLoaderFromMimeType(strMimeType);
+
+  if (!LoadIImage(pImage, buf.data(), buf.size(), width, height))
+  {
+    CLog::Log(LOGDEBUG, "{} - Load of {} failed.", __FUNCTION__, CURL::GetRedacted(texturePath));
+    delete pImage;
+    return false;
+  }
+  delete pImage;
+
+  return true;
+}
+
+bool CTexture::LoadFromFileInMem(unsigned char* buffer,
+                                 size_t size,
+                                 const std::string& mimeType,
+                                 unsigned int maxWidth,
+                                 unsigned int maxHeight)
+{
+  if (!buffer || !size)
+    return false;
+
+  unsigned int width = maxWidth ? std::min(maxWidth, CServiceBroker::GetRenderSystem()->GetMaxTextureSize()) :
+                                  CServiceBroker::GetRenderSystem()->GetMaxTextureSize();
+  unsigned int height = maxHeight ? std::min(maxHeight, CServiceBroker::GetRenderSystem()->GetMaxTextureSize()) :
+                                    CServiceBroker::GetRenderSystem()->GetMaxTextureSize();
+
+  IImage* pImage = ImageFactory::CreateLoaderFromMimeType(mimeType);
+  if(!LoadIImage(pImage, buffer, size, width, height))
+  {
+    delete pImage;
+    return false;
+  }
+  delete pImage;
+  return true;
+}
+
+bool CTexture::LoadIImage(IImage* pImage,
+                          unsigned char* buffer,
+                          unsigned int bufSize,
+                          unsigned int width,
+                          unsigned int height)
+{
+  if(pImage != NULL && pImage->LoadImageFromMemory(buffer, bufSize, width, height))
+  {
+    if (pImage->Width() > 0 && pImage->Height() > 0)
+    {
+      Allocate(pImage->Width(), pImage->Height(), XB_FMT_A8R8G8B8);
+      if (m_pixels != nullptr && pImage->Decode(m_pixels, GetTextureWidth(), GetRows(), GetPitch(), XB_FMT_A8R8G8B8))
+      {
+        if (pImage->Orientation())
+          m_orientation = pImage->Orientation() - 1;
+        m_hasAlpha = pImage->hasAlpha();
+        m_originalWidth = pImage->originalWidth();
+        m_originalHeight = pImage->originalHeight();
+        m_imageWidth = pImage->Width();
+        m_imageHeight = pImage->Height();
+        ClampToEdge();
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+bool CTexture::LoadFromMemory(unsigned int width,
+                              unsigned int height,
+                              unsigned int pitch,
+                              unsigned int format,
+                              bool hasAlpha,
+                              const unsigned char* pixels)
+{
+  m_imageWidth = m_originalWidth = width;
+  m_imageHeight = m_originalHeight = height;
+  m_format = format;
+  m_hasAlpha = hasAlpha;
+  Update(width, height, pitch, format, pixels, false);
+  return true;
+}
+
+bool CTexture::LoadPaletted(unsigned int width,
+                            unsigned int height,
+                            unsigned int pitch,
+                            unsigned int format,
+                            const unsigned char* pixels,
+                            const COLOR* palette)
+{
+  if (pixels == NULL || palette == NULL)
+    return false;
+
+  Allocate(width, height, format);
+
+  for (unsigned int y = 0; y < m_imageHeight; y++)
+  {
+    unsigned char *dest = m_pixels + y * GetPitch();
+    const unsigned char *src = pixels + y * pitch;
+    for (unsigned int x = 0; x < m_imageWidth; x++)
+    {
+      COLOR col = palette[*src++];
+      *dest++ = col.b;
+      *dest++ = col.g;
+      *dest++ = col.r;
+      *dest++ = col.x;
+    }
+  }
+  ClampToEdge();
+  return true;
+}
+
+unsigned int CTexture::PadPow2(unsigned int x)
+{
+  --x;
+  x |= x >> 1;
+  x |= x >> 2;
+  x |= x >> 4;
+  x |= x >> 8;
+  x |= x >> 16;
+  return ++x;
+}
+
+bool CTexture::SwapBlueRed(unsigned char* pixels,
+                           unsigned int height,
+                           unsigned int pitch,
+                           unsigned int elements,
+                           unsigned int offset)
+{
+  if (!pixels) return false;
+  unsigned char *dst = pixels;
+  for (unsigned int y = 0; y < height; y++)
+  {
+    dst = pixels + (y * pitch);
+    for (unsigned int x = 0; x < pitch; x+=elements)
+      std::swap(dst[x+offset], dst[x+2+offset]);
+  }
+  return true;
+}
+
+unsigned int CTexture::GetPitch(unsigned int width) const
+{
+  switch (m_format)
+  {
+  case XB_FMT_DXT1:
+    return ((width + 3) / 4) * 8;
+  case XB_FMT_DXT3:
+  case XB_FMT_DXT5:
+  case XB_FMT_DXT5_YCoCg:
+    return ((width + 3) / 4) * 16;
+  case XB_FMT_A8:
+    return width;
+  case XB_FMT_RGB8:
+    return (((width + 1)* 3 / 4) * 4);
+  case XB_FMT_RGBA8:
+  case XB_FMT_A8R8G8B8:
+  default:
+    return width*4;
+  }
+}
+
+unsigned int CTexture::GetRows(unsigned int height) const
+{
+  switch (m_format)
+  {
+  case XB_FMT_DXT1:
+    return (height + 3) / 4;
+  case XB_FMT_DXT3:
+  case XB_FMT_DXT5:
+  case XB_FMT_DXT5_YCoCg:
+    return (height + 3) / 4;
+  default:
+    return height;
+  }
+}
+
+unsigned int CTexture::GetBlockSize() const
+{
+  switch (m_format)
+  {
+  case XB_FMT_DXT1:
+    return 8;
+  case XB_FMT_DXT3:
+  case XB_FMT_DXT5:
+  case XB_FMT_DXT5_YCoCg:
+    return 16;
+  case XB_FMT_A8:
+    return 1;
+  default:
+    return 4;
+  }
+}
+
+bool CTexture::HasAlpha() const
+{
+  return m_hasAlpha;
+}
+
+void CTexture::SetMipmapping()
+{
+  m_mipmapping = true;
+}
+
+bool CTexture::IsMipmapped() const
+{
+  return m_mipmapping;
+}