1 files changed, 134 insertions, 0 deletions
diff --git a/xbmc/pictures/Picture.h b/xbmc/pictures/Picture.h
new file mode 100644
index 0000000..192982a
--- /dev/null
+++ b/xbmc/pictures/Picture.h
@@ -0,0 +1,134 @@
+/*
+ *  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.
+ */
+
+#pragma once
+
+#include "pictures/PictureScalingAlgorithm.h"
+#include "utils/Job.h"
+
+#include <cstddef>
+#include <cstdint>
+#include <string>
+#include <vector>
+
+extern "C"
+{
+#include <libavutil/pixfmt.h>
+}
+
+class CTexture;
+
+class CPicture
+{
+public:
+  static bool GetThumbnailFromSurface(const unsigned char* buffer, int width, int height, int stride, const std::string &thumbFile, uint8_t* &result, size_t& result_size);
+  static bool CreateThumbnailFromSurface(const unsigned char* buffer, int width, int height, int stride, const std::string &thumbFile);
+
+  /*! \brief Create a tiled thumb of the given files
+   \param files the files to create the thumb from
+   \param thumb the filename of the thumb
+   */
+  static bool CreateTiledThumb(const std::vector<std::string> &files, const std::string &thumb);
+
+  static bool ResizeTexture(
+      const std::string& image,
+      CTexture* texture,
+      uint32_t& dest_width,
+      uint32_t& dest_height,
+      uint8_t*& result,
+      size_t& result_size,
+      CPictureScalingAlgorithm::Algorithm scalingAlgorithm = CPictureScalingAlgorithm::NoAlgorithm);
+  static bool ResizeTexture(const std::string &image, uint8_t *pixels, uint32_t width, uint32_t height, uint32_t pitch,
+    uint32_t &dest_width, uint32_t &dest_height, uint8_t* &result, size_t& result_size,
+    CPictureScalingAlgorithm::Algorithm scalingAlgorithm = CPictureScalingAlgorithm::NoAlgorithm);
+
+  /*! \brief Cache a texture, resizing, rotating and flipping as needed, and saving as a JPG or PNG
+   \param texture a pointer to a CTexture
+   \param dest_width [in/out] maximum width in pixels of cached version - replaced with actual cached width
+   \param dest_height [in/out] maximum height in pixels of cached version - replaced with actual cached height
+   \param dest the output cache file
+   \return true if successful, false otherwise
+   */
+  static bool CacheTexture(
+      CTexture* texture,
+      uint32_t& dest_width,
+      uint32_t& dest_height,
+      const std::string& dest,
+      CPictureScalingAlgorithm::Algorithm scalingAlgorithm = CPictureScalingAlgorithm::NoAlgorithm);
+  static bool CacheTexture(uint8_t *pixels, uint32_t width, uint32_t height, uint32_t pitch, int orientation,
+    uint32_t &dest_width, uint32_t &dest_height, const std::string &dest,
+    CPictureScalingAlgorithm::Algorithm scalingAlgorithm = CPictureScalingAlgorithm::NoAlgorithm);
+
+  static void GetScale(unsigned int width, unsigned int height, unsigned int &out_width, unsigned int &out_height);
+  static bool ScaleImage(
+      uint8_t* in_pixels,
+      unsigned int in_width,
+      unsigned int in_height,
+      unsigned int in_pitch,
+      AVPixelFormat in_format,
+      uint8_t* out_pixels,
+      unsigned int out_width,
+      unsigned int out_height,
+      unsigned int out_pitch,
+      AVPixelFormat out_format,
+      CPictureScalingAlgorithm::Algorithm scalingAlgorithm = CPictureScalingAlgorithm::NoAlgorithm);
+
+private:
+  static bool OrientateImage(uint32_t*& pixels,
+                             unsigned int& width,
+                             unsigned int& height,
+                             int orientation,
+                             unsigned int& stridePixels);
+
+  static bool FlipHorizontal(uint32_t*& pixels,
+                             const unsigned int& width,
+                             const unsigned int& height,
+                             const unsigned int& stridePixels);
+  static bool FlipVertical(uint32_t*& pixels,
+                           const unsigned int& width,
+                           const unsigned int& height,
+                           const unsigned int& stridePixels);
+  static bool Rotate90CCW(uint32_t*& pixels,
+                          unsigned int& width,
+                          unsigned int& height,
+                          unsigned int& stridePixels);
+  static bool Rotate270CCW(uint32_t*& pixels,
+                           unsigned int& width,
+                           unsigned int& height,
+                           unsigned int& stridePixels);
+  static bool Rotate180CCW(uint32_t*& pixels,
+                           const unsigned int& width,
+                           const unsigned int& height,
+                           const unsigned int& stridePixels);
+  static bool Transpose(uint32_t*& pixels,
+                        unsigned int& width,
+                        unsigned int& height,
+                        unsigned int& width_aligned);
+  static bool TransposeOffAxis(uint32_t*& pixels,
+                               unsigned int& width,
+                               unsigned int& height,
+                               unsigned int& stridePixels);
+};
+
+//this class calls CreateThumbnailFromSurface in a CJob, so a png file can be written without halting the render thread
+class CThumbnailWriter : public CJob
+{
+  public:
+    //WARNING: buffer is deleted from DoWork()
+    CThumbnailWriter(unsigned char* buffer, int width, int height, int stride, const std::string& thumbFile);
+    ~CThumbnailWriter() override;
+    bool DoWork() override;
+
+  private:
+    unsigned char* m_buffer;
+    int            m_width;
+    int            m_height;
+    int            m_stride;
+    std::string    m_thumbFile;
+};
+