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/*
* kmscon - Bit-Blitting Bulk Text Renderer Backend
*
* Copyright (c) 2012-2013 David Herrmann <dh.herrmann@googlemail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* SECTION:text_bbulk.c
* @short_description: Bit-Blitting Bulk Text Renderer Backend
* @include: text.h
*
* Similar to the bblit renderer but assembles an array of blit-requests and
* pushes all of them at once to the video device.
*/
#include <errno.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include "shl_log.h"
#include "text.h"
#include "uterm_video.h"
#define LOG_SUBSYSTEM "text_bbulk"
struct bbulk {
struct uterm_video_blend_req *reqs;
};
#define FONT_WIDTH(txt) ((txt)->font->attr.width)
#define FONT_HEIGHT(txt) ((txt)->font->attr.height)
static int bbulk_init(struct kmscon_text *txt)
{
struct bbulk *bb;
bb = malloc(sizeof(*bb));
if (!bb)
return -ENOMEM;
txt->data = bb;
return 0;
}
static void bbulk_destroy(struct kmscon_text *txt)
{
struct bbulk *bb = txt->data;
free(bb);
}
static int bbulk_set(struct kmscon_text *txt)
{
struct bbulk *bb = txt->data;
unsigned int sw, sh, i, j;
struct uterm_video_blend_req *req;
struct uterm_mode *mode;
memset(bb, 0, sizeof(*bb));
mode = uterm_display_get_current(txt->disp);
if (!mode)
return -EINVAL;
sw = uterm_mode_get_width(mode);
sh = uterm_mode_get_height(mode);
txt->cols = sw / FONT_WIDTH(txt);
txt->rows = sh / FONT_HEIGHT(txt);
bb->reqs = malloc(sizeof(*bb->reqs) * txt->cols * txt->rows);
if (!bb->reqs)
return -ENOMEM;
memset(bb->reqs, 0, sizeof(*bb->reqs) * txt->cols * txt->rows);
for (i = 0; i < txt->rows; ++i) {
for (j = 0; j < txt->cols; ++j) {
req = &bb->reqs[i * txt->cols + j];
req->x = j * FONT_WIDTH(txt);
req->y = i * FONT_HEIGHT(txt);
}
}
return 0;
}
static void bbulk_unset(struct kmscon_text *txt)
{
struct bbulk *bb = txt->data;
free(bb->reqs);
bb->reqs = NULL;
}
static int bbulk_draw(struct kmscon_text *txt,
uint32_t id, const uint32_t *ch, size_t len,
unsigned int width,
unsigned int posx, unsigned int posy,
const struct tsm_screen_attr *attr)
{
struct bbulk *bb = txt->data;
const struct kmscon_glyph *glyph;
int ret;
struct uterm_video_blend_req *req;
struct kmscon_font *font;
if (!width) {
bb->reqs[posy * txt->cols + posx].buf = NULL;
return 0;
}
if (attr->bold)
font = txt->bold_font;
else
font = txt->font;
if (!len) {
ret = kmscon_font_render_empty(font, &glyph);
} else {
ret = kmscon_font_render(font, id, ch, len, &glyph);
}
if (ret) {
ret = kmscon_font_render_inval(font, &glyph);
if (ret)
return ret;
}
req = &bb->reqs[posy * txt->cols + posx];
req->buf = &glyph->buf;
if (attr->inverse) {
req->fr = attr->br;
req->fg = attr->bg;
req->fb = attr->bb;
req->br = attr->fr;
req->bg = attr->fg;
req->bb = attr->fb;
} else {
req->fr = attr->fr;
req->fg = attr->fg;
req->fb = attr->fb;
req->br = attr->br;
req->bg = attr->bg;
req->bb = attr->bb;
}
return 0;
}
static int bbulk_render(struct kmscon_text *txt)
{
struct bbulk *bb = txt->data;
return uterm_display_fake_blendv(txt->disp, bb->reqs,
txt->cols * txt->rows);
}
struct kmscon_text_ops kmscon_text_bbulk_ops = {
.name = "bbulk",
.owner = NULL,
.init = bbulk_init,
.destroy = bbulk_destroy,
.set = bbulk_set,
.unset = bbulk_unset,
.prepare = NULL,
.draw = bbulk_draw,
.render = bbulk_render,
.abort = NULL,
};
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