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Improve readability of scaling code

pull/88/head
IanSB 2019-04-16 15:39:15 +01:00
rodzic 9275ac8e49
commit 08ee1a362c
2 zmienionych plików z 30 dodań i 26 usunięć
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43
src/geometry.c
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@ -236,17 +236,19 @@ int get_scaling() {
}
void geometry_get_fb_params(capture_info_t *capinfo) {
capinfo->sizex2 = geometry->fb_sizex2;
capinfo->sizex2 = geometry->fb_sizex2;
int double_width = (capinfo->sizex2 & 2) >> 1;
int double_height = capinfo->sizex2 & 1;
capinfo->h_offset = ((geometry->h_offset >> 2) - (cpld->get_delay() >> 2));
if (capinfo->h_offset < 0) {
capinfo->h_offset = 0;
}
capinfo->v_offset = geometry->v_offset;
capinfo->chars_per_line = (geometry->h_width >> 3) << ((capinfo->sizex2 & 2)>>1);
capinfo->chars_per_line = (geometry->h_width >> 3) << double_width;
capinfo->nlines = geometry->v_height;
capinfo->width = geometry->fb_width << ((capinfo->sizex2 & 2)>>1); //adjust the width for capinfo according to fb_sizex2 setting;
capinfo->height = geometry->fb_height << (capinfo->sizex2 & 1); //adjust the height for capinfo according to fb_sizex2 setting
capinfo->width = geometry->fb_width << double_width; //adjust the width for capinfo according to sizex2 setting;
capinfo->height = geometry->fb_height << double_height; //adjust the height for capinfo according to sizex2 setting
capinfo->bpp = geometry->fb_bpp;
capinfo->px_sampling = geometry->px_sampling;
capinfo->sync_type = geometry->sync_type;
@ -268,19 +270,20 @@ void geometry_get_fb_params(capture_info_t *capinfo) {
}
int standard_width = mode7 ? (geometry->h_width * 4 / 3) : geometry->h_width; // workaround mode 7 width so it looks like other modes
int adjusted_width = geometry->h_width << ((capinfo->sizex2 & 2) >> 1);
int adjusted_height = geometry->v_height << (capinfo->sizex2 & 1);
int standard_height = geometry->v_height;
int adjusted_width = geometry->h_width << double_width;
int adjusted_height = geometry->v_height << double_height;
double hscalef = (double) h_size43 / standard_width;
int hscale = (int) hscalef;
int hborder = ((h_size - standard_width * hscale) << ((capinfo->sizex2 & 2)>>1)) / hscale; // (h_size - adjusted_width * hscale) / hscale;
int hborder43 = ((h_size43 - standard_width * hscale) << ((capinfo->sizex2 & 2)>>1)) / hscale; // (h_size43 - adjusted_width * hscale) / hscale;
double vscalef = (double) v_size43 / geometry->v_height;
int hborder = ((h_size - standard_width * hscale) << double_width) / hscale; // (h_size - adjusted_width * hscale) / hscale;
int hborder43 = ((h_size43 - standard_width * hscale) << double_width) / hscale; // (h_size43 - adjusted_width * hscale) / hscale;
double vscalef = (double) v_size43 / standard_height;
int vscale = (int) vscalef;
int vborder = ((v_size - geometry->v_height * vscale) << (capinfo->sizex2 & 1)) / vscale;
int vborder43 = ((v_size43 - geometry->v_height * vscale) << (capinfo->sizex2 & 1)) / vscale;
int vborder = ((v_size - standard_height * vscale) << double_height) / vscale;
int vborder43 = ((v_size43 - standard_height * vscale) << double_height) / vscale;
int newhborder43 = vborder43 * 4 / 3;
int newvborder43 = hborder43 * 3 / 4;
@ -305,19 +308,19 @@ void geometry_get_fb_params(capture_info_t *capinfo) {
capinfo->height = adjusted_height + vborder - vborder43 + newvborder43;
break;
case SCALING_MANUAL43:
capinfo->width = (geometry->fb_width << ((capinfo->sizex2 & 2) >> 1)) + (int)((double)(h_size - h_size43) / hscalef);
capinfo->height = (geometry->fb_height << (capinfo->sizex2 & 1)) + (int)((double)(v_size - v_size43) / vscalef);
capinfo->width = (geometry->fb_width << double_width ) + (int)((double)(h_size - h_size43) / hscalef);
capinfo->height = (geometry->fb_height << double_height) + (int)((double)(v_size - v_size43) / vscalef);
break;
case SCALING_MANUAL:
break;
};
if (capinfo->chars_per_line > (capinfo->width >> 3) ) {
if (capinfo->chars_per_line > (capinfo->width >> 3)) {
capinfo->chars_per_line = (capinfo->width >> 3);
}
if (capinfo->nlines > (capinfo->height >> (capinfo->sizex2 & 1))) {
capinfo->nlines = (capinfo->height >> (capinfo->sizex2 & 1));
if (capinfo->nlines > (capinfo->height >> double_height)) {
capinfo->nlines = (capinfo->height >> double_height);
}
//log_info("size= %d, %d, %d, %d, %d, %d, %d",capinfo->chars_per_line, capinfo->nlines, geometry->h_width, geometry->v_height,capinfo->width, capinfo->height, capinfo->sizex2);

13
src/rgb_to_hdmi.c
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@ -247,7 +247,7 @@ static void init_framebuffer(capture_info_t *capinfo) {
static void init_framebuffer(capture_info_t *capinfo) {
static int last_width = -1;
static int last_height = -1;
log_debug("Framebuf struct address: %p", fbp);
if (capinfo->width != last_width || capinfo->height != last_height) {
@ -282,7 +282,7 @@ static void init_framebuffer(capture_info_t *capinfo) {
// Wait for the response (0)
RPI_Mailbox0Read(MB0_FRAMEBUFFER);
}
last_width = capinfo->width;
last_height = capinfo->height;
@ -1568,17 +1568,18 @@ int is_genlocked() {
}
void calculate_fb_adjustment() {
capinfo->v_adjust = (capinfo->height >> (capinfo->sizex2 & 1)) - capinfo->nlines;
int double_height = capinfo->sizex2 & 1;
capinfo->v_adjust = (capinfo->height >> double_height) - capinfo->nlines;
if (capinfo->v_adjust < 0) {
capinfo->v_adjust = 0;
}
capinfo->v_adjust >>= ((capinfo->sizex2 & 1) ? 0 : 1);
capinfo->v_adjust >>= (double_height ^ 1);
capinfo->h_adjust = (capinfo->width >> 3) - capinfo->chars_per_line;
capinfo->h_adjust = (capinfo->width >> 3) - capinfo->chars_per_line;
if (capinfo->h_adjust < 0) {
capinfo->h_adjust = 0;
}
capinfo->h_adjust = ((capinfo->h_adjust >> 1) << (capinfo->bpp == 8)) << 2;
capinfo->h_adjust = capinfo->h_adjust << (capinfo->bpp == 8 ? 2 : 1);
//log_info("adjust=%d, %d", capinfo->h_adjust, capinfo->v_adjust);
}