mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-01 12:11:03 +00:00
374 lines
8.2 KiB
C
374 lines
8.2 KiB
C
/* 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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* Copyright (C) 2016-2017 - Brad Parker
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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 <caca.h>
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#include <retro_miscellaneous.h>
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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/caca_common.h"
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#include "../font_driver.h"
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#include "../../driver.h"
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#include "../../verbosity.h"
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static caca_canvas_t *caca_cv = NULL;
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static caca_dither_t *caca_dither = NULL;
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static caca_display_t *caca_display = NULL;
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static unsigned char *caca_menu_frame = NULL;
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static unsigned caca_menu_width = 0;
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static unsigned caca_menu_height = 0;
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static unsigned caca_menu_pitch = 0;
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static unsigned caca_video_width = 0;
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static unsigned caca_video_height = 0;
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static unsigned caca_video_pitch = 0;
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static bool caca_rgb32 = false;
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static void caca_gfx_free(void *data);
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static void caca_gfx_create(void)
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{
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caca_display = caca_create_display(NULL);
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caca_cv = caca_get_canvas(caca_display);
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if(!caca_video_width || !caca_video_height)
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{
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caca_video_width = caca_get_canvas_width(caca_cv);
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caca_video_height = caca_get_canvas_height(caca_cv);
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}
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if (caca_rgb32)
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caca_dither = caca_create_dither(32, caca_video_width, caca_video_height, caca_video_pitch,
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0x00ff0000, 0xff00, 0xff, 0x0);
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else
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caca_dither = caca_create_dither(16, caca_video_width, caca_video_height, caca_video_pitch,
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0xf800, 0x7e0, 0x1f, 0x0);
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video_driver_set_size(&caca_video_width, &caca_video_height);
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}
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static void *caca_gfx_init(const video_info_t *video,
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const input_driver_t **input, void **input_data)
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{
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caca_t *caca = (caca_t*)calloc(1, sizeof(*caca));
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caca->caca_cv = &caca_cv;
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caca->caca_dither = &caca_dither;
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caca->caca_display = &caca_display;
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*input = NULL;
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*input_data = NULL;
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caca_video_width = video->width;
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caca_video_height = video->height;
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caca_rgb32 = video->rgb32;
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if (video->rgb32)
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caca_video_pitch = video->width * 4;
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else
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caca_video_pitch = video->width * 2;
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caca_gfx_create();
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if (!caca_cv || !caca_dither || !caca_display)
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{
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/* TODO: handle errors */
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}
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if (video->font_enable)
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font_driver_init_osd(NULL, false, FONT_DRIVER_RENDER_CACA);
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return caca;
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}
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static bool caca_gfx_frame(void *data, const void *frame,
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unsigned frame_width, unsigned frame_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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size_t len = 0;
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void *buffer = NULL;
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const void *frame_to_copy = frame;
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unsigned width = 0;
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unsigned height = 0;
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bool draw = true;
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(void)data;
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(void)frame;
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(void)frame_width;
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(void)frame_height;
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(void)pitch;
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(void)msg;
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if (!frame || !frame_width || !frame_height)
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return true;
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if ( caca_video_width != frame_width ||
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caca_video_height != frame_height ||
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caca_video_pitch != pitch)
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{
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if (frame_width > 4 && frame_height > 4)
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{
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caca_video_width = frame_width;
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caca_video_height = frame_height;
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caca_video_pitch = pitch;
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caca_gfx_free(NULL);
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caca_gfx_create();
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}
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}
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if (!caca_cv)
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return true;
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if (caca_menu_frame && menu_driver_ctl(RARCH_MENU_CTL_IS_ALIVE, NULL))
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frame_to_copy = caca_menu_frame;
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width = caca_get_canvas_width(caca_cv);
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height = caca_get_canvas_height(caca_cv);
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if ( frame_to_copy == frame &&
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frame_width == 4 &&
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frame_height == 4 &&
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(frame_width < width && frame_height < height))
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draw = false;
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if (menu_driver_ctl(RARCH_MENU_CTL_IS_ALIVE, NULL))
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draw = false;
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caca_clear_canvas(caca_cv);
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#ifdef HAVE_MENU
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menu_driver_frame(video_info);
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#endif
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if (msg)
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font_driver_render_msg(video_info, NULL, msg, NULL);
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if (draw)
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{
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caca_dither_bitmap(caca_cv, 0, 0,
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width,
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height,
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caca_dither, frame_to_copy);
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buffer = caca_export_canvas_to_memory(caca_cv, "caca", &len);
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if (buffer)
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{
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if (len)
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caca_refresh_display(caca_display);
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free(buffer);
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}
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}
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return true;
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}
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static void caca_gfx_set_nonblock_state(void *data, bool toggle)
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{
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(void)data;
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(void)toggle;
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}
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static bool caca_gfx_alive(void *data)
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{
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(void)data;
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video_driver_set_size(&caca_video_width, &caca_video_height);
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return true;
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}
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static bool caca_gfx_focus(void *data)
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{
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(void)data;
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return true;
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}
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static bool caca_gfx_suppress_screensaver(void *data, bool enable)
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{
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(void)data;
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(void)enable;
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return false;
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}
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static bool caca_gfx_has_windowed(void *data)
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{
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(void)data;
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return true;
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}
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static void caca_gfx_free(void *data)
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{
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(void)data;
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if (caca_display)
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{
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caca_free_display(caca_display);
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caca_display = NULL;
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}
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if (caca_dither)
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{
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caca_free_dither(caca_dither);
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caca_dither = NULL;
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}
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if (caca_menu_frame)
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{
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free(caca_menu_frame);
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caca_menu_frame = NULL;
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}
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}
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static bool caca_gfx_set_shader(void *data,
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enum rarch_shader_type type, const char *path)
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{
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(void)data;
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(void)type;
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(void)path;
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return false;
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}
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static void caca_gfx_set_rotation(void *data,
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unsigned rotation)
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{
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(void)data;
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(void)rotation;
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}
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static void caca_gfx_viewport_info(void *data,
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struct video_viewport *vp)
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{
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(void)data;
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(void)vp;
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}
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static bool caca_gfx_read_viewport(void *data, uint8_t *buffer)
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{
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(void)data;
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(void)buffer;
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return true;
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}
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static void caca_set_texture_frame(void *data,
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const void *frame, bool rgb32, unsigned width, unsigned height,
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float alpha)
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{
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unsigned pitch = width * 2;
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if (rgb32)
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pitch = width * 4;
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if (caca_menu_frame)
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{
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free(caca_menu_frame);
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caca_menu_frame = NULL;
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}
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if ( !caca_menu_frame ||
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caca_menu_width != width ||
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caca_menu_height != height ||
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caca_menu_pitch != pitch)
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if (pitch && height)
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caca_menu_frame = (unsigned char*)malloc(pitch * height);
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if (caca_menu_frame && frame && pitch && height)
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memcpy(caca_menu_frame, frame, pitch * height);
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}
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static void caca_set_osd_msg(void *data, const char *msg,
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const void *params, void *font)
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{
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video_frame_info_t video_info;
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video_driver_build_info(&video_info);
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font_driver_render_msg(&video_info, font, msg, params);
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}
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static const video_poke_interface_t caca_poke_interface = {
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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#ifdef HAVE_FBO
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NULL,
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#else
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NULL,
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#endif
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NULL,
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NULL,
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NULL,
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#if defined(HAVE_MENU)
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caca_set_texture_frame,
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NULL,
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caca_set_osd_msg,
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NULL,
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#else
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NULL,
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NULL,
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NULL,
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NULL,
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#endif
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NULL,
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#ifdef HAVE_MENU
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NULL,
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#endif
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};
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static void caca_gfx_get_poke_interface(void *data,
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const video_poke_interface_t **iface)
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{
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(void)data;
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*iface = &caca_poke_interface;
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}
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void caca_gfx_set_viewport(void *data, unsigned viewport_width,
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unsigned viewport_height, bool force_full, bool allow_rotate)
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{
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}
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video_driver_t video_caca = {
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caca_gfx_init,
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caca_gfx_frame,
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caca_gfx_set_nonblock_state,
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caca_gfx_alive,
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caca_gfx_focus,
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caca_gfx_suppress_screensaver,
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caca_gfx_has_windowed,
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caca_gfx_set_shader,
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caca_gfx_free,
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"caca",
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caca_gfx_set_viewport,
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caca_gfx_set_rotation,
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caca_gfx_viewport_info,
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caca_gfx_read_viewport,
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NULL, /* read_frame_raw */
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#ifdef HAVE_OVERLAY
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NULL, /* overlay_interface */
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#endif
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caca_gfx_get_poke_interface,
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};
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