mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-04 06:11:17 +00:00
250 lines
7.4 KiB
C
250 lines
7.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2016-2017 - Alfred Agrell
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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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#define _XOPEN_SOURCE 700 /* TODO: this doesn't really belong here. */
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#include <stdlib.h>
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#include <string.h>
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#include <sys/shm.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/extensions/XShm.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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#ifdef HAVE_MENU
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#include "../../menu/menu_driver.h"
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#endif
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#include "../common/x11_common.h"
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#include "../../configuration.h"
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#include "../../verbosity.h"
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typedef struct xshm
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{
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XShmSegmentInfo shmInfo;
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XImage* image;
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uint8_t *fbptr;
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GC gc;
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int width;
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int height;
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bool use_shm;
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} xshm_t;
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static void *xshm_init(const video_info_t *video,
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input_driver_t **input, void **input_data)
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{
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xshm_t* xshm = (xshm_t*)malloc(sizeof(xshm_t));
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Window parent;
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XSetWindowAttributes attributes;
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XInitThreads();
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g_x11_dpy = XOpenDisplay(NULL);
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xshm->use_shm = true;
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if (!XShmQueryExtension(g_x11_dpy))
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{
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RARCH_LOG("[X11]: XShm extension not found.\n");
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xshm->use_shm = false;
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}
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#ifdef RARCH_INTERNAL
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parent = DefaultRootWindow(g_x11_dpy);
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#else
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parent = video->parent;
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#endif
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attributes.border_pixel = 0;
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g_x11_win = XCreateWindow(g_x11_dpy, parent,
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0, 0, video->width, video->height,
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0, 24, CopyFromParent, NULL, CWBorderPixel, &attributes);
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XSetWindowBackground(g_x11_dpy, g_x11_win, 0);
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XMapWindow(g_x11_dpy, g_x11_win);
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if (xshm->use_shm)
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{
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xshm->shmInfo.shmid = shmget(IPC_PRIVATE, sizeof(uint32_t) * video->width * video->height,
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IPC_CREAT | 0600);
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if (xshm->shmInfo.shmid < 0)
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abort();/* seems like an OOM situation... let's just blow up. */
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xshm->shmInfo.shmaddr = (char*)shmat(xshm->shmInfo.shmid, 0, 0);
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xshm->shmInfo.readOnly = False;
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XShmAttach(g_x11_dpy, &xshm->shmInfo);
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XSync(g_x11_dpy, False);/* no idea why this is required, but I get weird errors without it. */
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xshm->image = XShmCreateImage(g_x11_dpy, NULL, 24, ZPixmap,
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xshm->shmInfo.shmaddr, &xshm->shmInfo, video->width, video->height);
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xshm->fbptr = (uint8_t*)xshm->shmInfo.shmaddr;
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}
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else
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{
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size_t pitch = video->width * 4;
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void *data = malloc (pitch * video->height);
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if (!data)
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abort(); /* seems like an OOM situation... let's just blow up. */
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xshm->image = XCreateImage(g_x11_dpy, NULL, 24, ZPixmap, 0,
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(char *) data, video->width,
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video->height, 8, pitch);
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xshm->fbptr = (uint8_t*)data;
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XSync(g_x11_dpy, False);
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}
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xshm->gc = XCreateGC(g_x11_dpy, g_x11_win, 0, NULL);
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xshm->width = video->width;
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xshm->height = video->height;
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if (!x11_input_ctx_new(true))
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goto error;
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if (input && input_data)
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{
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settings_t *settings = config_get_ptr();
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void *xinput = input_driver_init_wrap(&input_x,
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settings->arrays.input_joypad_driver);
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if (xinput)
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{
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*input = &input_x;
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*input_data = xinput;
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}
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else
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*input = NULL;
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}
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return xshm;
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error:
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free (xshm);
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return NULL;
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}
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static bool xshm_frame(void *data, const void *frame, unsigned width,
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unsigned height, uint64_t frame_count,
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unsigned pitch, const char *msg, video_frame_info_t *video_info)
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{
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unsigned y;
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xshm_t *xshm = (xshm_t*)data;
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#ifdef HAVE_MENU
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bool menu_is_alive = (video_info->menu_st_flags & MENU_ST_FLAG_ALIVE) ? true : false;
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#endif
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for (y = 0; y < height; y++)
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memcpy(xshm->fbptr + sizeof(uint32_t)*xshm->width*y,
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(uint8_t*)frame + pitch*y, pitch);
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#ifdef HAVE_MENU
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menu_driver_frame(menu_is_alive, video_info);
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#endif
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if (xshm->use_shm)
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XShmPutImage(g_x11_dpy, g_x11_win, xshm->gc, xshm->image,
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0, 0, 0, 0, xshm->width, xshm->height, False);
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else
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XPutImage(g_x11_dpy, g_x11_win, xshm->gc, xshm->image,
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0, 0, 0, 0, xshm->width, xshm->height);
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XFlush(g_x11_dpy);
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return true;
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}
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static void xshm_set_nonblock_state(void *a, bool b, bool c, unsigned d) { }
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static bool xshm_alive(void *data) { return true; }
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static bool xshm_focus(void *data) { return true; }
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static bool xshm_suppress_screensaver(void *data, bool enable) { return false; }
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static void xshm_free(void *data) { }
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static void xshm_poke_set_filtering(void *data, unsigned index, bool smooth, bool ctx_scaling) { }
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static void xshm_poke_set_aspect_ratio(void *data, unsigned aspect_ratio_idx) { }
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static void xshm_poke_apply_state_changes(void *data) { }
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static void xshm_poke_set_texture_frame(void *data,
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const void *frame, bool rgb32,
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unsigned width, unsigned height, float alpha) { }
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static void xshm_poke_texture_enable(void *data,
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bool enable, bool full_screen) { }
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static void xshm_poke_set_osd_msg(void *data,
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const char *msg,
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const struct font_params *params, void *font) { }
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static void xshm_show_mouse(void *data, bool state) { }
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static void xshm_grab_mouse_toggle(void *data) { }
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static video_poke_interface_t xshm_video_poke_interface = {
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NULL, /* get_flags */
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NULL, /* load_texture */
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NULL, /* unload_texture */
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NULL, /* set_video_mode */
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#ifdef HAVE_XF86VM
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x11_get_refresh_rate,
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#else
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NULL, /* get_refresh_rate */
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#endif
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xshm_poke_set_filtering,
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NULL, /* get_video_output_size */
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NULL, /* get_video_output_prev */
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NULL, /* get_video_output_next */
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NULL, /* get_current_framebuffer */
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NULL, /* get_proc_address */
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xshm_poke_set_aspect_ratio,
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xshm_poke_apply_state_changes,
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xshm_poke_set_texture_frame,
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xshm_poke_texture_enable,
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xshm_poke_set_osd_msg,
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xshm_show_mouse,
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xshm_grab_mouse_toggle,
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NULL, /* get_current_shader */
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NULL, /* get_current_software_framebuffer */
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NULL, /* get_hw_render_interface */
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NULL, /* set_hdr_max_nits */
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NULL, /* set_hdr_paper_white_nits */
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NULL, /* set_hdr_contrast */
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NULL /* set_hdr_expand_gamut */
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};
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static void xshm_get_poke_interface(void *data,
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const video_poke_interface_t **iface)
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{
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*iface = &xshm_video_poke_interface;
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}
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static bool xshm_set_shader(void *data,
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enum rarch_shader_type type, const char *path) { return false; }
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video_driver_t video_xshm = {
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xshm_init,
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xshm_frame,
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xshm_set_nonblock_state,
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xshm_alive,
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xshm_focus,
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xshm_suppress_screensaver,
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NULL, /* has_windowed */
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xshm_set_shader,
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xshm_free,
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"x11",
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NULL, /* set_viewport */
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NULL, /* set_rotation */
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NULL, /* viewport_info */
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NULL, /* read_viewport */
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NULL, /* read_frame_raw */
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#ifdef HAVE_OVERLAY
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NULL, /* get_overlay_interface */
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#endif
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xshm_get_poke_interface,
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NULL, /* wrap_type_to_enum */
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#ifdef HAVE_GFX_WIDGETS
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NULL /* gfx_widgets_enabled */
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#endif
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};
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