| /* GStreamer |
| * Copyright (C) <2013> Wim Taymans <wim.taymans@gmail.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef __GST_VIDEO_TILE_H__ |
| #define __GST_VIDEO_TILE_H__ |
| |
| #include <gst/gst.h> |
| #include <gst/video/video-prelude.h> |
| |
| G_BEGIN_DECLS |
| |
| /** |
| * GstVideoTileType: |
| * @GST_VIDEO_TILE_TYPE_INDEXED: Tiles are indexed. Use |
| * gst_video_tile_get_index () to retrieve the tile at the requested |
| * coordinates. |
| * |
| * Enum value describing the most common tiling types. |
| */ |
| typedef enum |
| { |
| GST_VIDEO_TILE_TYPE_INDEXED = 0 |
| } GstVideoTileType; |
| |
| #define GST_VIDEO_TILE_TYPE_SHIFT (16) |
| |
| /** |
| * GST_VIDEO_TILE_TYPE_MASK: (value 65535) |
| */ |
| #define GST_VIDEO_TILE_TYPE_MASK ((1 << GST_VIDEO_TILE_TYPE_SHIFT) - 1) |
| |
| /** |
| * GST_VIDEO_TILE_MAKE_MODE: |
| * @num: the mode number to create |
| * @type: the tile mode type |
| * |
| * use this macro to create new tile modes. |
| */ |
| #define GST_VIDEO_TILE_MAKE_MODE(num, type) \ |
| (((num) << GST_VIDEO_TILE_TYPE_SHIFT) | (GST_VIDEO_TILE_TYPE_ ##type)) |
| |
| /** |
| * GST_VIDEO_TILE_MODE_TYPE: |
| * @mode: the tile mode |
| * |
| * Get the tile mode type of @mode |
| */ |
| #define GST_VIDEO_TILE_MODE_TYPE(mode) ((mode) & GST_VIDEO_TILE_TYPE_MASK) |
| |
| /** |
| * GST_VIDEO_TILE_MODE_IS_INDEXED: |
| * @mode: a tile mode |
| * |
| * Check if @mode is an indexed tile type |
| */ |
| #define GST_VIDEO_TILE_MODE_IS_INDEXED(mode) (GST_VIDEO_TILE_MODE_TYPE(mode) == GST_VIDEO_TILE_TYPE_INDEXED) |
| |
| |
| #define GST_VIDEO_TILE_Y_TILES_SHIFT (16) |
| |
| /** |
| * GST_VIDEO_TILE_X_TILES_MASK: (value 65535) |
| */ |
| #define GST_VIDEO_TILE_X_TILES_MASK ((1 << GST_VIDEO_TILE_Y_TILES_SHIFT) - 1) |
| |
| /** |
| * GST_VIDEO_TILE_MAKE_STRIDE: |
| * @x_tiles: number of tiles in X |
| * @y_tiles: number of tiles in Y |
| * |
| * Encode the number of tile in X and Y into the stride. |
| */ |
| #define GST_VIDEO_TILE_MAKE_STRIDE(x_tiles, y_tiles) \ |
| (((y_tiles) << GST_VIDEO_TILE_Y_TILES_SHIFT) | (x_tiles)) |
| |
| /** |
| * GST_VIDEO_TILE_X_TILES: |
| * @stride: plane stride |
| * |
| * Extract the number of tiles in X from the stride value. |
| */ |
| #define GST_VIDEO_TILE_X_TILES(stride) ((stride) & GST_VIDEO_TILE_X_TILES_MASK) |
| |
| /** |
| * GST_VIDEO_TILE_Y_TILES: |
| * @stride: plane stride |
| * |
| * Extract the number of tiles in Y from the stride value. |
| */ |
| #define GST_VIDEO_TILE_Y_TILES(stride) ((stride) >> GST_VIDEO_TILE_Y_TILES_SHIFT) |
| |
| /** |
| * GstVideoTileMode: |
| * @GST_VIDEO_TILE_MODE_UNKNOWN: Unknown or unset tile mode |
| * @GST_VIDEO_TILE_MODE_ZFLIPZ_2X2: Every four adjacent blocks - two |
| * horizontally and two vertically are grouped together and are located |
| * in memory in Z or flipped Z order. In case of odd rows, the last row |
| * of blocks is arranged in linear order. |
| * |
| * Enum value describing the available tiling modes. |
| */ |
| typedef enum |
| { |
| GST_VIDEO_TILE_MODE_UNKNOWN = 0, |
| GST_VIDEO_TILE_MODE_ZFLIPZ_2X2 = GST_VIDEO_TILE_MAKE_MODE (1, INDEXED), |
| } GstVideoTileMode; |
| |
| GST_VIDEO_API |
| guint gst_video_tile_get_index (GstVideoTileMode mode, gint x, gint y, |
| gint x_tiles, gint y_tiles); |
| |
| |
| G_END_DECLS |
| |
| #endif /* __GST_VIDEO_TILE_H__ */ |