1 files changed, 148 insertions, 0 deletions
diff --git a/xbmc/guilib/DDSImage.cpp b/xbmc/guilib/DDSImage.cpp
new file mode 100644
index 0000000..124352d
--- /dev/null
+++ b/xbmc/guilib/DDSImage.cpp
@@ -0,0 +1,148 @@
+/*
+ *  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 "DDSImage.h"
+
+#include "XBTF.h"
+#include "filesystem/File.h"
+#include "utils/log.h"
+
+#include <algorithm>
+#include <string.h>
+using namespace XFILE;
+
+CDDSImage::CDDSImage()
+{
+  m_data = NULL;
+  memset(&m_desc, 0, sizeof(m_desc));
+}
+
+CDDSImage::CDDSImage(unsigned int width, unsigned int height, unsigned int format)
+{
+  m_data = NULL;
+  Allocate(width, height, format);
+}
+
+CDDSImage::~CDDSImage()
+{
+  delete[] m_data;
+}
+
+unsigned int CDDSImage::GetWidth() const
+{
+  return m_desc.width;
+}
+
+unsigned int CDDSImage::GetHeight() const
+{
+  return m_desc.height;
+}
+
+unsigned int CDDSImage::GetFormat() const
+{
+  if (m_desc.pixelFormat.flags & DDPF_RGB)
+    return 0; // Not supported
+  if (m_desc.pixelFormat.flags & DDPF_FOURCC)
+  {
+    if (strncmp((const char *)&m_desc.pixelFormat.fourcc, "DXT1", 4) == 0)
+      return XB_FMT_DXT1;
+    if (strncmp((const char *)&m_desc.pixelFormat.fourcc, "DXT3", 4) == 0)
+      return XB_FMT_DXT3;
+    if (strncmp((const char *)&m_desc.pixelFormat.fourcc, "DXT5", 4) == 0)
+      return XB_FMT_DXT5;
+    if (strncmp((const char *)&m_desc.pixelFormat.fourcc, "ARGB", 4) == 0)
+      return XB_FMT_A8R8G8B8;
+  }
+  return 0;
+}
+
+unsigned int CDDSImage::GetSize() const
+{
+  return m_desc.linearSize;
+}
+
+unsigned char *CDDSImage::GetData() const
+{
+  return m_data;
+}
+
+bool CDDSImage::ReadFile(const std::string &inputFile)
+{
+  // open the file
+  CFile file;
+  if (!file.Open(inputFile))
+    return false;
+
+  // read the header
+  uint32_t magic;
+  if (file.Read(&magic, 4) != 4)
+    return false;
+  if (file.Read(&m_desc, sizeof(m_desc)) != sizeof(m_desc))
+    return false;
+  if (!GetFormat())
+    return false;  // not supported
+
+  // allocate our data
+  m_data = new unsigned char[m_desc.linearSize];
+  if (!m_data)
+    return false;
+
+  // and read it in
+  if (file.Read(m_data, m_desc.linearSize) != static_cast<ssize_t>(m_desc.linearSize))
+    return false;
+
+  file.Close();
+  return true;
+}
+
+unsigned int CDDSImage::GetStorageRequirements(unsigned int width, unsigned int height, unsigned int format)
+{
+  switch (format)
+  {
+  case XB_FMT_DXT1:
+    return ((width + 3) / 4) * ((height + 3) / 4) * 8;
+  case XB_FMT_DXT3:
+  case XB_FMT_DXT5:
+    return ((width + 3) / 4) * ((height + 3) / 4) * 16;
+  case XB_FMT_A8R8G8B8:
+  default:
+    return width * height * 4;
+  }
+}
+
+void CDDSImage::Allocate(unsigned int width, unsigned int height, unsigned int format)
+{
+  memset(&m_desc, 0, sizeof(m_desc));
+  m_desc.size = sizeof(m_desc);
+  m_desc.flags = ddsd_caps | ddsd_pixelformat | ddsd_width | ddsd_height | ddsd_linearsize;
+  m_desc.height = height;
+  m_desc.width = width;
+  m_desc.linearSize = GetStorageRequirements(width, height, format);
+  m_desc.pixelFormat.size = sizeof(m_desc.pixelFormat);
+  m_desc.pixelFormat.flags = ddpf_fourcc;
+  memcpy(&m_desc.pixelFormat.fourcc, GetFourCC(format), 4);
+  m_desc.caps.flags1 = ddscaps_texture;
+  delete[] m_data;
+  m_data = new unsigned char[m_desc.linearSize];
+}
+
+const char *CDDSImage::GetFourCC(unsigned int format)
+{
+  switch (format)
+  {
+  case XB_FMT_DXT1:
+    return "DXT1";
+  case XB_FMT_DXT3:
+    return "DXT3";
+  case XB_FMT_DXT5:
+    return "DXT5";
+  case XB_FMT_A8R8G8B8:
+  default:
+    return "ARGB";
+  }
+}