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