From 6aafcec6823d2b99c40b2ce85ed6581b6c3af3ea Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Wed, 19 Oct 2011 14:26:51 -0400 Subject: Make PNG and GL share the same optimizer. --- libdimension/rgba16.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 libdimension/rgba16.c (limited to 'libdimension/rgba16.c') diff --git a/libdimension/rgba16.c b/libdimension/rgba16.c new file mode 100644 index 0000000..980a2d3 --- /dev/null +++ b/libdimension/rgba16.c @@ -0,0 +1,63 @@ +/************************************************************************* + * Copyright (C) 2010-2011 Tavian Barnes * + * * + * This file is part of The Dimension Library. * + * * + * The Dimension Library is free software; you can redistribute it and/ * + * or modify it under the terms of the GNU Lesser General Public License * + * as published by the Free Software Foundation; either version 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension 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 * + * Lesser General Public License for more details. * + * * + * You should have received a copy of the GNU Lesser General Public * + * License along with this program. If not, see * + * . * + *************************************************************************/ + +/** + * @file + * 16-bit RGBA canvas optimizer. + */ + +#include "dimension-internal.h" +#include + +void +dmnsn_rgba16_optimize_canvas(dmnsn_canvas *canvas) +{ + /* Check if we've already optimized this canvas */ + DMNSN_ARRAY_FOREACH (dmnsn_canvas_optimizer *, i, canvas->optimizers) { + if (i->optimizer_fn == dmnsn_rgba16_optimizer_fn) { + return; + } + } + + dmnsn_canvas_optimizer optimizer; + optimizer.optimizer_fn = dmnsn_rgba16_optimizer_fn; + optimizer.free_fn = dmnsn_free; + optimizer.ptr = dmnsn_malloc(4*canvas->width*canvas->height*sizeof(uint16_t)); + + dmnsn_canvas_optimize(canvas, optimizer); +} + +/* PNG optimizer callback */ +void +dmnsn_rgba16_optimizer_fn(const dmnsn_canvas *canvas, + dmnsn_canvas_optimizer optimizer, size_t x, size_t y) +{ + uint16_t *pixel = (uint16_t *)optimizer.ptr + 4*(y*canvas->width + x); + dmnsn_color color; + color = dmnsn_canvas_get_pixel(canvas, x, y); + color = dmnsn_remove_filter(color); + color = dmnsn_color_to_sRGB(color); + color = dmnsn_color_saturate(color); + + pixel[0] = lround(color.R*UINT16_MAX); + pixel[1] = lround(color.G*UINT16_MAX); + pixel[2] = lround(color.B*UINT16_MAX); + pixel[3] = lround(color.trans*UINT16_MAX); +} -- cgit v1.2.3