void osd_alert(struct osd_t* osd, char* text)
{
uint32_t text_length;
uint32_t width,height;
uint32_t y_offset;
uint32_t x_offset;
uint32_t text_size = 40;
pthread_mutex_lock(&osd->osd_mutex);
/* TODO: Only clear alert area */
graphics_resource_fill(osd->img, 0, 0, osd->display_width, osd->display_height, GRAPHICS_RGBA32(0,0,0,0));
if (text) {
fprintf(stderr,"[OSD ALERT]: %s\n",text);
text_length = strlen(text);
graphics_resource_text_dimensions_ext(osd->img, text, text_length, &width, &height, text_size);
x_offset = ((1920 - width) / 2);
y_offset = (1080 - height) / 2;
osd_draw_window(osd,x_offset,y_offset,width+100,height+50);
graphics_resource_render_text_ext(osd->img, x_offset+50, y_offset+25,
width,
height,
GRAPHICS_RGBA32(0xff,0xff,0xff,0xff), /* fg */
GRAPHICS_RGBA32(0,0,0,0x80), /* bg */
text, text_length, text_size);
}
graphics_update_displayed_resource(osd->img, 0, 0, 0, 0);
pthread_mutex_unlock(&osd->osd_mutex);
}
void osd_init(struct osd_t* osd)
{
uint32_t display_width, display_height;
char str[2] = { 0, 0 };
uint32_t width, height;
int n;
int s;
s = gx_graphics_init(tiresias_pcfont, sizeof(tiresias_pcfont));
assert(s == 0);
s = graphics_get_display_size(0, &display_width, &display_height);
osd->display_width = display_width;
osd->display_height = display_height;
printf("osd_init: %d %d\n", display_width, display_height);
assert(s == 0);
//fprintf(stderr,"Display width=%d, height=%d\n",display_width,display_height);
/* The main OSD image */
s = gx_create_window(SCREEN, display_width, display_height, GRAPHICS_RESOURCE_RGBA32, &osd->img);
assert(s == 0);
graphics_resource_fill(osd->img, 0, 0, display_width, display_height, GRAPHICS_RGBA32(0,0,0,0));
graphics_display_resource(osd->img, 0, OSD_LAYER, 0, 0, GRAPHICS_RESOURCE_WIDTH, GRAPHICS_RESOURCE_HEIGHT, VC_DISPMAN_ROT0, 1);
/* A full-screen black image to either remove any left-over console text (BG_LAYER) or to hide the video (FG_LAYER) */
s = gx_create_window(SCREEN, display_width, display_height, GRAPHICS_RESOURCE_RGBA32, &osd->img_blank);
assert(s == 0);
graphics_resource_fill(osd->img_blank, 0, 0, display_width, display_height, GRAPHICS_RGBA32(0,0,0,255));
graphics_display_resource(osd->img_blank, 0, BG_LAYER, 0, 0, GRAPHICS_RESOURCE_WIDTH, GRAPHICS_RESOURCE_HEIGHT, VC_DISPMAN_ROT0, 1);
osd->video_blanked = 0;
osd->osd_cleartime = 0.0;
osd->last_now = time(NULL);
pthread_mutex_init(&osd->osd_mutex,NULL);
// cache font widths since graphics_resource_text_dimensions_ext is kind of slow
for (n = 32; n < 256; n++) {
str[0] = n;
graphics_resource_text_dimensions_ext(osd->img, str, 1, &width, &height, 40);
fontWidth[n] = (uint8_t)width;
}
(void)s; // remove compiler warning
}
int32_t render_subtitle(GRAPHICS_RESOURCE_HANDLE img, const char *text, const int skip, const uint32_t text_size, const uint32_t y_offset)
{
uint32_t text_length = strlen(text)-skip;
uint32_t width=0, height=0;
const char *split = text;
int32_t s=0;
int len = 0; // length of pre-subtitle
uint32_t img_w, img_h;
graphics_get_resource_size(img, &img_w, &img_h);
if (text_length==0)
return 0;
while (split[0]) {
s = graphics_resource_text_dimensions_ext(img, split, text_length-(split-text), &width, &height, text_size);
if (s != 0) return s;
if (width > img_w) {
const char *space = strnchr(split, text_length-(split-text), ' ');
if (!space) {
len = split+1-text;
split = split+1;
} else {
len = space-text;
split = space+1;
}
} else {
break;
}
}
// split now points to last line of text. split-text = length of initial text. text_length-(split-text) is length of last line
if (width) {
s = graphics_resource_render_text_ext(img, (img_w - width)>>1, y_offset-height,
GRAPHICS_RESOURCE_WIDTH,
GRAPHICS_RESOURCE_HEIGHT,
GRAPHICS_RGBA32(0xff,0xff,0xff,0xff), /* fg */
GRAPHICS_RGBA32(0,0,0,0x80), /* bg */
split, text_length-(split-text), text_size);
if (s!=0) return s;
}
return render_subtitle(img, text, skip+text_length-len, text_size, y_offset - height);
}
int32_t render_paragraph(GRAPHICS_RESOURCE_HANDLE img, const char *text, const uint32_t text_size, const uint32_t x_offset, const uint32_t y_offset)
{
uint32_t text_length;
uint32_t line_length;
uint32_t width=0, height=0;
const char *split = text;
int32_t s=0;
uint32_t img_w = 1400;;
if ((!text) || ((text_length=strlen(text))==0))
return 0;
//fprintf(stderr,"render_paragraph(\"%s\",%d)\n",text,text_length);
s = graphics_resource_text_dimensions_ext(img, text, text_length, &width, &height, text_size);
if (s != 0) return s;
if (width <= img_w) {
/* We can display the whole line */
line_length = text_length;
} else {
//fprintf(stderr,"width=%d, img_w=%d, looking for next space\n",width,img_w);
const char* space = index(split,' ');
if (space) {
s = graphics_resource_text_dimensions_ext(img, text, space-text, &width, &height, text_size);
if (s != 0) return s;
}
if ((space == NULL) || (width > img_w)) {
/* No spaces, within img_w. Just go through character by character */
line_length = 0;
do {
line_length++;
s = graphics_resource_text_dimensions_ext(img, text, text_length, &width, &height, text_size);
if (s != 0) return s;
} while (width < img_w);
line_length--;
} else {
/* We have at least one space, so can split line on a space */
width = 0;
line_length = space - text;
while (width < img_w) {
space = index(space+1,' ');
s = graphics_resource_text_dimensions_ext(img, text, space - text, &width, &height, text_size);
if (s != 0) return s;
if (width < img_w) { line_length = space - text; }
}
}
}
if (line_length) {
//int i;
//fprintf(stderr,"Rendering: ");
//for (i=0;i<line_length;i++) { fprintf(stderr,"%c",text[i]); }
//fprintf(stderr,"\n");
s = graphics_resource_render_text_ext(img, x_offset, y_offset,
GRAPHICS_RESOURCE_WIDTH,
GRAPHICS_RESOURCE_HEIGHT,
GRAPHICS_RGBA32(0xff,0xff,0xff,0xff), /* fg */
GRAPHICS_RGBA32(0,0,0,0x80), /* bg */
text, line_length, text_size);
if (s!=0) return s;
}
if (text[line_length]) {
return render_paragraph(img, text + line_length+1, text_size, x_offset, y_offset + height);
} else {
return 0;
}
}
