/* CRT SwitchRes Core
* Copyright (C) 2018 Alphanu / Ben Templeman.
*
* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see .
*/
#include
#include
#include
#include "video_driver.h"
#include "video_crt_switch.h"
#include "video_display_server.h"
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
#if defined(HAVE_VIDEOCORE)
#include "include/userland/interface/vmcs_host/vc_vchi_gencmd.h"
static void crt_rpi_switch(int width, int height, float hz);
#endif
static unsigned ra_core_width = 0;
static unsigned ra_core_height = 0;
static unsigned ra_tmp_width = 0;
static unsigned ra_tmp_height = 0;
static unsigned ra_set_core_hz = 0;
static unsigned orig_width = 0;
static unsigned orig_height = 0;
static int crt_center_adjust = 0;
static int crt_tmp_center_adjust = 0;
static double p_clock = 0;
static bool first_run = true;
static float ra_tmp_core_hz = 0.0f;
static float fly_aspect = 0.0f;
static float ra_core_hz = 0.0f;
static unsigned crt_index = 0;
static void crt_check_first_run(void)
{
if (!first_run)
return;
first_run = false;
}
static void switch_crt_hz(void)
{
if (ra_core_hz == ra_tmp_core_hz)
return;
/* set hz float to an int for windows switching */
if (ra_core_hz < 100)
{
if (ra_core_hz < 53)
ra_set_core_hz = 50;
if (ra_core_hz >= 53 && ra_core_hz < 57)
ra_set_core_hz = 55;
if (ra_core_hz >= 57)
ra_set_core_hz = 60;
}
if (ra_core_hz > 100)
{
if (ra_core_hz < 106)
ra_set_core_hz = 120;
if (ra_core_hz >= 106 && ra_core_hz < 114)
ra_set_core_hz = 110;
if (ra_core_hz >= 114)
ra_set_core_hz = 120;
}
video_monitor_set_refresh_rate(ra_set_core_hz);
ra_tmp_core_hz = ra_core_hz;
}
void crt_aspect_ratio_switch(unsigned width, unsigned height)
{
/* send aspect float to videeo_driver */
fly_aspect = (float)width / height;
video_driver_set_aspect_ratio_value((float)fly_aspect);
}
static void switch_res_crt(unsigned width, unsigned height)
{
video_display_server_set_resolution(width, height,
ra_set_core_hz, ra_core_hz, crt_center_adjust, crt_index, crt_center_adjust);
#if defined(HAVE_VIDEOCORE)
crt_rpi_switch(width, height, ra_core_hz);
video_monitor_set_refresh_rate(ra_core_hz);
crt_switch_driver_reinit();
#endif
video_driver_apply_state_changes();
}
/* Create correct aspect to fit video if resolution does not exist */
static void crt_screen_setup_aspect(unsigned width, unsigned height)
{
#if defined(HAVE_VIDEOCORE)
if (height > 300)
height = height/2;
#endif
switch_crt_hz();
/* get original resolution of core */
if (height == 4)
{
/* detect menu only */
if (width < 700)
width = 320;
height = 240;
crt_aspect_ratio_switch(width, height);
}
if (height < 200 && height != 144)
{
crt_aspect_ratio_switch(width, height);
height = 200;
}
if (height > 200)
crt_aspect_ratio_switch(width, height);
if (height == 144 && ra_set_core_hz == 50)
{
height = 288;
crt_aspect_ratio_switch(width, height);
}
if (height > 200 && height < 224)
{
crt_aspect_ratio_switch(width, height);
height = 224;
}
if (height > 224 && height < 240)
{
crt_aspect_ratio_switch(width, height);
height = 240;
}
if (height > 240 && height < 255)
{
crt_aspect_ratio_switch(width, height);
height = 254;
}
if (height == 528 && ra_set_core_hz == 60)
{
crt_aspect_ratio_switch(width, height);
height = 480;
}
if (height >= 240 && height < 255 && ra_set_core_hz == 55)
{
crt_aspect_ratio_switch(width, height);
height = 254;
}
switch_res_crt(width, height);
}
void crt_switch_res_core(unsigned width, unsigned height,
float hz, unsigned crt_mode,
int crt_switch_center_adjust, int monitor_index, bool dynamic)
{
/* ra_core_hz float passed from within
* void video_driver_monitor_adjust_system_rates(void) */
if (width == 4)
{
width = 320;
height = 240;
}
ra_core_height = height;
ra_core_hz = hz;
if (dynamic)
ra_core_width = crt_compute_dynamic_width(width);
else
ra_core_width = width;
crt_center_adjust = crt_switch_center_adjust;
crt_index = monitor_index;
if (crt_mode == 2)
{
if (hz > 53)
ra_core_hz = hz * 2;
if (hz <= 53)
ra_core_hz = 120.0f;
}
crt_check_first_run();
/* Detect resolution change and switch */
if (
(ra_tmp_height != ra_core_height) ||
(ra_core_width != ra_tmp_width) || (crt_center_adjust != crt_tmp_center_adjust)
)
crt_screen_setup_aspect(ra_core_width, ra_core_height);
ra_tmp_height = ra_core_height;
ra_tmp_width = ra_core_width;
crt_tmp_center_adjust = crt_center_adjust;
/* Check if aspect is correct, if not change */
if (video_driver_get_aspect_ratio() != fly_aspect)
{
video_driver_set_aspect_ratio_value((float)fly_aspect);
video_driver_apply_state_changes();
}
}
void crt_video_restore(void)
{
if (first_run)
return;
first_run = true;
}
int crt_compute_dynamic_width(int width)
{
unsigned i;
int dynamic_width = 0;
unsigned min_height = 261;
#if defined(HAVE_VIDEOCORE)
p_clock = 32000000;
#else
p_clock = 15000000;
#endif
for (i = 0; i < 10; i++)
{
dynamic_width = (width*1.5)*i;
if ((dynamic_width * min_height * ra_core_hz) > p_clock)
break;
}
return dynamic_width;
}
#if defined(HAVE_VIDEOCORE)
static void crt_rpi_switch(int width, int height, float hz)
{
char buffer[1024];
VCHI_INSTANCE_T vchi_instance;
VCHI_CONNECTION_T *vchi_connection = NULL;
static char output[250] = {0};
static char output1[250] = {0};
static char output2[250] = {0};
static char set_hdmi[250] = {0};
static char set_hdmi_timing[250] = {0};
int i = 0;
int hfp = 0;
int hsp = 0;
int hbp = 0;
int vfp = 0;
int vsp = 0;
int vbp = 0;
int hmax = 0;
int vmax = 0;
int pdefault = 8;
int pwidth = 0;
float roundw = 0.0f;
float roundh = 0.0f;
float pixel_clock = 0;
int ip_flag = 0;
/* set core refresh from hz */
video_monitor_set_refresh_rate(hz);
/* following code is the mode line generator */
pwidth = width;
if (height < 400 && width > 400)
pwidth = width / 2;
roundw = roundf((float)pwidth / (float)height * 100) / 100;
if (height > width)
roundw = roundf((float)height / (float)width * 100) / 100;
if (roundw > 1.35)
roundw = 1.25;
if (roundw < 1.20)
roundw = 1.34;
hfp = width * 0.065;
hsp = width * 0.1433-hfp+(crt_center_adjust*4);
hbp = width * 0.3-hsp-hfp;
if (height < 241)
vmax = 261;
if (height < 241 && hz > 56 && hz < 58)
vmax = 280;
if (height < 241 && hz < 55)
vmax = 313;
if (height > 250 && height < 260 && hz > 54)
vmax = 296;
if (height > 250 && height < 260 && hz > 52 && hz < 54)
vmax = 285;
if (height > 250 && height < 260 && hz < 52)
vmax = 313;
if (height > 260 && height < 300)
vmax = 318;
if (height > 400 && hz > 56)
vmax = 533;
if (height > 520 && hz < 57)
vmax = 580;
if (height > 300 && hz < 56)
vmax = 615;
if (height > 500 && hz < 56)
vmax = 624;
if (height > 300)
pdefault = pdefault * 2;
vfp = (height + ((vmax - height) / 2) - pdefault) - height;
if (height < 300)
vsp = vfp + 3; /* needs to be 3 for progressive */
if (height > 300)
vsp = vfp + 6; /* needs to be 6 for interlaced */
vsp = 3;
vbp = (vmax-height)-vsp-vfp;
hmax = width+hfp+hsp+hbp;
if (height < 300)
{
pixel_clock = (hmax * vmax * hz) ;
ip_flag = 0;
}
if (height > 300)
{
pixel_clock = (hmax * vmax * (hz/2)) /2 ;
ip_flag = 1;
}
/* above code is the modeline generator */
snprintf(set_hdmi_timing, sizeof(set_hdmi_timing),
"hdmi_timings %d 1 %d %d %d %d 1 %d %d %d 0 0 0 %f %d %f 1 ",
width, hfp, hsp, hbp, height, vfp,vsp, vbp,
hz, ip_flag, pixel_clock);
vcos_init();
vchi_initialise(&vchi_instance);
vchi_connect(NULL, 0, vchi_instance);
vc_vchi_gencmd_init(vchi_instance, &vchi_connection, 1);
vc_gencmd(buffer, sizeof(buffer), set_hdmi_timing);
vc_gencmd_stop();
vchi_disconnect(vchi_instance);
snprintf(output1, sizeof(output1),
"tvservice -e \"DMT 87\" > /dev/null");
system(output1);
snprintf(output2, sizeof(output1),
"fbset -g %d %d %d %d 24 > /dev/null",
width, height, width, height);
system(output2);
}
#endif