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140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/* GStreamer
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* Copyright (C) <2013> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_VIDEO_TILE_H__
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#define __GST_VIDEO_TILE_H__
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#include <gst/gst.h>
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#include <gst/video/video-prelude.h>
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G_BEGIN_DECLS
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/**
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* GstVideoTileType:
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* @GST_VIDEO_TILE_TYPE_INDEXED: Tiles are indexed. Use
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* gst_video_tile_get_index () to retrieve the tile at the requested
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* coordinates.
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*
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* Enum value describing the most common tiling types.
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*/
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typedef enum
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{
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GST_VIDEO_TILE_TYPE_INDEXED = 0
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} GstVideoTileType;
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#define GST_VIDEO_TILE_TYPE_SHIFT (16)
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/**
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* GST_VIDEO_TILE_TYPE_MASK: (value 65535)
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*/
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#define GST_VIDEO_TILE_TYPE_MASK ((1 << GST_VIDEO_TILE_TYPE_SHIFT) - 1)
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/**
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* GST_VIDEO_TILE_MAKE_MODE:
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* @num: the mode number to create
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* @type: the tile mode type
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*
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* use this macro to create new tile modes.
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*/
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#define GST_VIDEO_TILE_MAKE_MODE(num, type) \
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(((num) << GST_VIDEO_TILE_TYPE_SHIFT) | (GST_VIDEO_TILE_TYPE_ ##type))
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/**
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* GST_VIDEO_TILE_MODE_TYPE:
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* @mode: the tile mode
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*
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* Get the tile mode type of @mode
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*/
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#define GST_VIDEO_TILE_MODE_TYPE(mode) ((mode) & GST_VIDEO_TILE_TYPE_MASK)
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/**
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* GST_VIDEO_TILE_MODE_IS_INDEXED:
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* @mode: a tile mode
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*
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* Check if @mode is an indexed tile type
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*/
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#define GST_VIDEO_TILE_MODE_IS_INDEXED(mode) (GST_VIDEO_TILE_MODE_TYPE(mode) == GST_VIDEO_TILE_TYPE_INDEXED)
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#define GST_VIDEO_TILE_Y_TILES_SHIFT (16)
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/**
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* GST_VIDEO_TILE_X_TILES_MASK: (value 65535)
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*/
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#define GST_VIDEO_TILE_X_TILES_MASK ((1 << GST_VIDEO_TILE_Y_TILES_SHIFT) - 1)
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/**
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* GST_VIDEO_TILE_MAKE_STRIDE:
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* @x_tiles: number of tiles in X
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* @y_tiles: number of tiles in Y
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*
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* Encode the number of tile in X and Y into the stride.
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*/
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#define GST_VIDEO_TILE_MAKE_STRIDE(x_tiles, y_tiles) \
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(((y_tiles) << GST_VIDEO_TILE_Y_TILES_SHIFT) | (x_tiles))
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/**
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* GST_VIDEO_TILE_X_TILES:
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* @stride: plane stride
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*
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* Extract the number of tiles in X from the stride value.
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*/
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#define GST_VIDEO_TILE_X_TILES(stride) ((stride) & GST_VIDEO_TILE_X_TILES_MASK)
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/**
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* GST_VIDEO_TILE_Y_TILES:
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* @stride: plane stride
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*
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* Extract the number of tiles in Y from the stride value.
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*/
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#define GST_VIDEO_TILE_Y_TILES(stride) ((stride) >> GST_VIDEO_TILE_Y_TILES_SHIFT)
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/**
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* GstVideoTileMode:
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* @GST_VIDEO_TILE_MODE_UNKNOWN: Unknown or unset tile mode
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* @GST_VIDEO_TILE_MODE_ZFLIPZ_2X2: Every four adjacent blocks - two
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* horizontally and two vertically are grouped together and are located
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* in memory in Z or flipped Z order. In case of odd rows, the last row
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* of blocks is arranged in linear order.
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* @GST_VIDEO_TILE_MODE_LINEAR: Tiles are in row order. (Since: 1.18)
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*
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* Enum value describing the available tiling modes.
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*/
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typedef enum
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{
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GST_VIDEO_TILE_MODE_UNKNOWN = 0,
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GST_VIDEO_TILE_MODE_ZFLIPZ_2X2 = GST_VIDEO_TILE_MAKE_MODE (1, INDEXED),
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/**
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* GST_VIDEO_TILE_MODE_LINEAR:
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*
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* Tiles are in row order.
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*
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* Since: 1.18
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*/
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GST_VIDEO_TILE_MODE_LINEAR = GST_VIDEO_TILE_MAKE_MODE (2, INDEXED),
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} GstVideoTileMode;
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GST_VIDEO_API
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guint gst_video_tile_get_index (GstVideoTileMode mode, gint x, gint y,
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gint x_tiles, gint y_tiles);
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G_END_DECLS
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#endif /* __GST_VIDEO_TILE_H__ */
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