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/*
* libzvbi
*
* Copyright (C) 2003, 2004 Michael H. Schimek
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: image_format.c,v 1.2 2005/01/08 14:54:20 mschimek Exp $ */
#include "image_format.h"
/**
* @param pixfmt Pixel format.
*
* Returns the name of a pixel format like VBI3_PIXFMT_YUYV ->
* "YUYV". This is mainly intended for debugging.
*
* @return
* Static ASCII string, NULL if @a pixfmt is invalid.
*/
const char *
vbi3_pixfmt_name (vbi3_pixfmt pixfmt)
{
switch (pixfmt) {
#undef CASE
#define CASE(fmt) case VBI3_PIXFMT_##fmt : return #fmt ;
CASE (NONE)
CASE (YUV444)
CASE (YVU444)
CASE (YUV422)
CASE (YVU422)
CASE (YUV411)
CASE (YVU411)
CASE (YUV420)
CASE (YVU420)
CASE (YUV410)
CASE (YVU410)
CASE (YUVA24_LE)
CASE (YUVA24_BE)
CASE (YVUA24_LE)
CASE (YVUA24_BE)
CASE (YUV24_LE)
CASE (YUV24_BE)
CASE (YVU24_LE)
CASE (YVU24_BE)
CASE (YUYV)
CASE (YVYU)
CASE (UYVY)
CASE (VYUY)
CASE (Y8)
CASE (RGBA24_LE)
CASE (RGBA24_BE)
CASE (BGRA24_LE)
CASE (BGRA24_BE)
CASE (RGB24_LE)
CASE (BGR24_LE)
CASE (RGB16_LE)
CASE (RGB16_BE)
CASE (BGR16_LE)
CASE (BGR16_BE)
CASE (RGBA15_LE)
CASE (RGBA15_BE)
CASE (BGRA15_LE)
CASE (BGRA15_BE)
CASE (ARGB15_LE)
CASE (ARGB15_BE)
CASE (ABGR15_LE)
CASE (ABGR15_BE)
CASE (RGBA12_LE)
CASE (RGBA12_BE)
CASE (BGRA12_LE)
CASE (BGRA12_BE)
CASE (ARGB12_LE)
CASE (ARGB12_BE)
CASE (ABGR12_LE)
CASE (ABGR12_BE)
CASE (RGB8)
CASE (BGR8)
CASE (RGBA7)
CASE (BGRA7)
CASE (ARGB7)
CASE (ABGR7)
case VBI3_PIXFMT_RESERVED0:
case VBI3_PIXFMT_RESERVED1:
case VBI3_PIXFMT_RESERVED2:
case VBI3_PIXFMT_RESERVED3:
break;
/* No default, gcc warns. */
}
return NULL;
}
unsigned int
_vbi3_pixfmt_bytes_per_pixel (vbi3_pixfmt pixfmt)
{
vbi3_pixfmt_set set = VBI3_PIXFMT_SET (pixfmt);
if (set & (_VBI3_PIXFMT_SET_4 | _VBI3_PIXFMT_SET_3))
return (set & _VBI3_PIXFMT_SET_4) ? 4 : 3;
else if (set & (_VBI3_PIXFMT_SET_2 | _VBI3_PIXFMT_SET_1))
return (set & _VBI3_PIXFMT_SET_2) ? 2 : 1;
return 0;
}
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