media now plays in node graph

2019-08-04 19:45:06 +10:00
parent 298ae2f36c
commit f55094c5df
15 changed files with 484 additions and 229 deletions
@@ -0,0 +1,93 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef PIXELSERVICE_H
+#define PIXELSERVICE_H
+
+#include <QString>
+#include <QOpenGLExtraFunctions>
+
+#include "pixelformat.h"
+
+/**
+ * @brief A struct of information pertaining to each enum PixelFormat.
+ *
+ * Primarily this is a means of retrieving OpenGL texture information for different pixel formats/bit depths. Both
+ * RAM and VRAM buffers will need a PixelFormat. To keep consistency between the OpenGL code and CPU code when using
+ * a given PixelFormat, the PixelFormatInfo struct contains all necessary variables that you'll need to plug into
+ * OpenGL.
+ *
+ * Use the static function PixelService::GetPixelFormatInfo to generate a PixelFormatInfo object.
+ */
+struct PixelFormatInfo {
+  QString name;
+  GLint internal_format;
+  GLenum pixel_format;
+  GLenum pixel_type;
+  int bytes_per_pixel;
+};
+
+class PixelService : public QObject {
+public:
+
+  PixelService();
+
+  /**
+   * @brief Return a PixelFormatInfo containing information for a certain format
+   *
+   * \see PixelFormatInfo
+   */
+  static PixelFormatInfo GetPixelFormatInfo(const olive::PixelFormat& format);
+
+  /**
+   * @brief Returns the minimum buffer size (in bytes) necessary for a given format, width, and height.
+   *
+   * @param format
+   *
+   * The format of the data the buffer should contain. Must be a member of the olive::PixelFormat enum.
+   *
+   * @param width
+   *
+   * The width (in pixels) of the buffer.
+   *
+   * @param height
+   *
+   * The height (in pixels) of the buffer.
+   */
+  static int GetBufferSize(const olive::PixelFormat &format, const int& width, const int& height);
+
+  /**
+   * @brief Returns the number of bytes per pixel for a certain format
+   *
+   * Different formats use different sizes of data for pixels. Use this function to determine how many bytes a pixel
+   * requires for a certain format. The number of bytes will always be a multiple of 4 since all formats use RGBA and
+   * are at least 1 bpc.
+   */
+  static int BytesPerPixel(const olive::PixelFormat& format);
+
+  /**
+   * @brief Returns the number of bytes per channel for a certain format
+   */
+  static int BytesPerChannel(const olive::PixelFormat& format);
+
+private:
+};
+
+#endif // PIXELSERVICE_H