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RetroArch/gfx/drivers/omap_gfx.c
libretroadmin 51d238875e Get rid of obsolete HAVE_VIDEO_LAYOUT - obsolete spec, was only 
ever implemented for OpenGL2 driver, lots of code debt, best to
instead just keep improving the overlay system instead which is
already available for most video drivers
2023-02-23 21:03:41 +01:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
* Copyright (C) 2013-2014 - Tobias Jakobi
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/mman.h>
#include <linux/omapfb.h>
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#ifdef HAVE_MENU
#include "../../menu/menu_driver.h"
#endif
#include <retro_inline.h>
#include <gfx/scaler/scaler.h>
#include <gfx/video_frame.h>
#include <string/stdstring.h>
#include "../font_driver.h"
#include "../../configuration.h"
#include "../../driver.h"
#include "../../retroarch.h"
typedef struct omapfb_page
{
unsigned yoffset;
void *buf;
bool used;
} omapfb_page_t;
typedef struct omapfb_state
{
struct omapfb_plane_info pi;
struct omapfb_mem_info mi;
struct fb_var_screeninfo si;
void* mem;
} omapfb_state_t;
typedef struct omapfb_data
{
const char* fbname;
int fd;
void *fb_mem;
unsigned fb_framesize;
omapfb_page_t *pages;
int num_pages;
omapfb_page_t *cur_page;
omapfb_page_t *old_page;
/* current and saved (for later restore) states */
omapfb_state_t* current_state;
omapfb_state_t* saved_state;
/* native screen size */
unsigned nat_w, nat_h;
/* bytes per pixel */
unsigned bpp;
bool sync;
} omapfb_data_t;
static const char *omapfb_get_fb_device(void)
{
static char fbname[12] = {0};
settings_t *settings = config_get_ptr();
const int fbidx = settings->uints.video_monitor_index;
if (fbidx == 0)
return "/dev/fb0";
snprintf(fbname, sizeof(fbname), "/dev/fb%d", fbidx - 1);
RARCH_LOG("[video_omap]: Using %s as framebuffer device.\n", fbname);
return fbname;
}
static omapfb_page_t *omapfb_get_page(omapfb_data_t *pdata)
{
unsigned i;
omapfb_page_t *page = NULL;
for (i = 0; i < pdata->num_pages; ++i)
{
if (&pdata->pages[i] == pdata->cur_page)
continue;
if (&pdata->pages[i] == pdata->old_page)
continue;
if (!pdata->pages[i].used)
{
page = &pdata->pages[i];
break;
}
}
return page;
}
static void omapfb_page_flip(omapfb_data_t *pdata)
{
if (pdata->sync)
ioctl(pdata->fd, OMAPFB_WAITFORGO);
/* TODO: should we use the manual update feature of the OMAP here? */
pdata->current_state->si.yoffset = pdata->cur_page->yoffset;
ioctl(pdata->fd, FBIOPAN_DISPLAY, &pdata->current_state->si);
if (pdata->old_page)
pdata->old_page->used = false;
}
static int omapfb_read_sysfs(const char *fname, char *buff, size_t size)
{
int ret;
FILE *f = fopen(fname, "r");
if (!f)
return -1;
ret = fread(buff, 1, size - 1, f);
fclose(f);
if (ret <= 0)
return -1;
buff[ret] = 0;
for (ret--; ret >= 0 && isspace(buff[ret]); ret--)
buff[ret] = 0;
return 0;
}
static INLINE void omapfb_put_pixel_rgb565(
uint16_t *p, unsigned r, unsigned g, unsigned b)
{
*p = (((r >> 3) & 0x1f) << 11) | (((g >> 2) & 0x3f) << 5) | ((b >> 3) & 0x1f);
}
static INLINE void omapfb_put_pixel_argb8888(
uint32_t *p, unsigned r, unsigned g, unsigned b)
{
*p = ((r << 16) & 0xff0000) | ((g << 8) & 0x00ff00) | ((b << 0) & 0x0000ff);
}
static int omapfb_detect_screen(omapfb_data_t *pdata)
{
struct stat status;
int i, ret;
int w, h;
FILE *f;
char buff[64];
char manager_name[64];
char display_name[64];
int fb_id, overlay_id = -1, display_id = -1;
buff[0] = manager_name[0] = display_name[0] = '\0';
/* Find out the native screen resolution, which is needed to
* properly center the scaled image data. */
ret = stat(pdata->fbname, &status);
if (ret != 0)
{
RARCH_ERR("[video_omap]: can't stat %s.\n", pdata->fbname);
return -1;
}
fb_id = minor(status.st_rdev);
snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id);
f = fopen(buff, "r");
if (!f)
{
RARCH_ERR("[video_omap]: can't open %s.\n", buff);
return -1;
}
ret = fscanf(f, "%d", &overlay_id);
fclose(f);
if (ret != 1)
{
RARCH_ERR("[video_omap]: can't parse %s.\n", buff);
return -1;
}
snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id);
ret = omapfb_read_sysfs(buff, manager_name, sizeof(manager_name));
if (ret < 0)
{
RARCH_ERR("[video_omap]: can't read manager name.\n");
return -1;
}
for (i = 0; ; i++)
{
snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/manager%d/name", i);
ret = omapfb_read_sysfs(buff, buff, sizeof(buff));
if (ret < 0)
break;
if (string_is_equal(manager_name, buff))
{
snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/manager%d/display", i);
ret = omapfb_read_sysfs(buff, display_name, sizeof(display_name));
if (ret < 0)
{
RARCH_ERR("[video_omap]: can't read display name.\n");
return -1;
}
break;
}
}
if (ret < 0)
{
RARCH_ERR("[video_omap]: couldn't find manager.\n");
return -1;
}
for (i = 0; ; i++)
{
snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i);
ret = omapfb_read_sysfs(buff, buff, sizeof(buff));
if (ret < 0)
break;
if (string_is_equal(display_name, buff))
{
display_id = i;
break;
}
}
if (display_id < 0)
{
RARCH_ERR("[video_omap]: couldn't find display.\n");
return -1;
}
snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", display_id);
f = fopen(buff, "r");
if (!f)
{
RARCH_ERR("[video_omap]: can't open %s.\n", buff);
return -1;
}
ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &w, &h);
fclose(f);
if (ret != 2)
{
RARCH_ERR("[video_omap]: can't parse %s (%d).\n", buff, ret);
return -1;
}
if (w <= 0 || h <= 0)
{
RARCH_ERR("[video_omap]: unsane dimensions detected (%dx%d).\n", w, h);
return -1;
}
RARCH_LOG("[video_omap]: detected %dx%d '%s' (%d) display attached to fb %d and overlay %d.\n",
w, h, display_name, display_id, fb_id, overlay_id);
pdata->nat_w = w;
pdata->nat_h = h;
return 0;
}
static int omapfb_setup_pages(omapfb_data_t *pdata)
{
int i;
if (!pdata->pages)
{
pdata->pages = (omapfb_page_t*)calloc(pdata->num_pages, sizeof(omapfb_page_t));
if (!pdata->pages)
{
RARCH_ERR("[video_omap]: pages allocation failed.\n");
return -1;
}
}
for (i = 0; i < pdata->num_pages; ++i)
{
pdata->pages[i].yoffset = i * pdata->current_state->si.yres;
pdata->pages[i].buf = (void*)((uint8_t*)pdata->fb_mem + (i * pdata->fb_framesize));
pdata->pages[i].used = false;
}
pdata->old_page = NULL;
pdata->cur_page = &pdata->pages[0];
memset(pdata->cur_page->buf, 0, pdata->fb_framesize);
omapfb_page_flip(pdata);
pdata->cur_page->used = true;
return 0;
}
static int omapfb_mmap(omapfb_data_t *pdata)
{
pdata->fb_mem = mmap(NULL, pdata->current_state->mi.size, PROT_WRITE,
MAP_SHARED, pdata->fd, 0);
if (pdata->fb_mem == MAP_FAILED)
{
pdata->fb_mem = NULL;
RARCH_ERR("[video_omap]: framebuffer mmap failed\n");
return -1;
}
return 0;
}
static int omapfb_backup_state(omapfb_data_t *pdata)
{
void* mem = NULL;
pdata->saved_state = calloc(1, sizeof(omapfb_state_t));
if (!pdata->saved_state) return -1;
if (ioctl(pdata->fd, OMAPFB_QUERY_PLANE, &pdata->saved_state->pi) != 0)
{
RARCH_ERR("[video_omap]: backup layer (plane) failed\n");
return -1;
}
if (ioctl(pdata->fd, OMAPFB_QUERY_MEM, &pdata->saved_state->mi) != 0)
{
RARCH_ERR("[video_omap]: backup layer (mem) failed\n");
return -1;
}
if (ioctl(pdata->fd, FBIOGET_VSCREENINFO, &pdata->saved_state->si) != 0)
{
RARCH_ERR("[video_omap]: backup layer (screeninfo) failed\n");
return -1;
}
pdata->saved_state->mem = malloc(pdata->saved_state->mi.size);
mem = mmap(NULL, pdata->saved_state->mi.size, PROT_WRITE|PROT_READ,
MAP_SHARED, pdata->fd, 0);
if (!pdata->saved_state->mem || mem == MAP_FAILED)
{
RARCH_ERR("[video_omap]: backup layer (mem backup) failed\n");
munmap(mem, pdata->saved_state->mi.size);
return -1;
}
memcpy(pdata->saved_state->mem, mem, pdata->saved_state->mi.size);
munmap(mem, pdata->saved_state->mi.size);
return 0;
}
static int omapfb_alloc_mem(omapfb_data_t *pdata)
{
unsigned mem_size;
struct omapfb_plane_info pi;
struct omapfb_mem_info mi;
void *mem = NULL;
const struct retro_game_geometry *geom = NULL;
struct retro_system_av_info *av_info = NULL;
pdata->current_state = (omapfb_state_t*)calloc(1, sizeof(omapfb_state_t));
if (!pdata->current_state)
goto error;
if (ioctl(pdata->fd, OMAPFB_QUERY_PLANE, &pi) != 0)
{
RARCH_ERR("[video_omap]: alloc mem (query plane) failed\n");
goto error;
}
if (ioctl(pdata->fd, OMAPFB_QUERY_MEM, &mi) != 0)
{
RARCH_ERR("[video_omap]: alloc mem (query mem) failed\n");
goto error;
}
/* disable plane when changing memory allocation */
if (pi.enabled)
{
pi.enabled = 0;
if (ioctl(pdata->fd, OMAPFB_SETUP_PLANE, &pi) != 0)
{
RARCH_ERR("[video_omap]: alloc mem (disable plane) failed\n");
goto error;
}
}
av_info = video_viewport_get_system_av_info();
if (av_info)
geom = &av_info->geometry;
if (!geom)
goto error;
mem_size = geom->max_width * geom->max_height *
pdata->bpp * pdata->num_pages;
if (mi.size < mem_size)
{
mi.size = mem_size;
if (ioctl(pdata->fd, OMAPFB_SETUP_MEM, &mi) != 0)
{
RARCH_ERR("[video_omap]: allocation of %u bytes of VRAM failed\n", mem_size);
goto error;
}
}
mem = mmap(NULL, mi.size, PROT_WRITE|PROT_READ, MAP_SHARED, pdata->fd, 0);
if (mem == MAP_FAILED)
{
RARCH_ERR("[video_omap]: zeroing framebuffer failed\n");
goto error;
}
memset(mem, 0, mi.size);
munmap(mem, mi.size);
pdata->current_state->mi = mi;
/* Don't re-enable the plane here (setup not yet complete) */
return 0;
error:
if (pdata->current_state)
free(pdata->current_state);
return -1;
}
static int omapfb_setup_screeninfo(omapfb_data_t *pdata, int width, int height)
{
omapfb_state_t* state = pdata->current_state;
state->si.xres = width;
state->si.yres = height;
state->si.xres_virtual = width;
state->si.yres_virtual = height * pdata->num_pages;
state->si.xoffset = 0;
state->si.yoffset = 0;
state->si.bits_per_pixel = pdata->bpp * 8;
/* OMAPFB_COLOR_ARGB32 for bpp=4, OMAPFB_COLOR_RGB565 for bpp=2 */
state->si.nonstd = 0;
if (ioctl(pdata->fd, FBIOPUT_VSCREENINFO, &state->si) != 0)
{
RARCH_ERR("[video_omap]: setup screeninfo failed\n");
return -1;
}
pdata->fb_framesize = width * height * pdata->bpp;
return 0;
}
static float omapfb_scaling(omapfb_data_t *pdata, int width, int height)
{
const float w_factor = (float)pdata->nat_w / (float)width;
const float h_factor = (float)pdata->nat_h / (float)height;
return (w_factor < h_factor ? w_factor : h_factor);
}
static int omapfb_setup_plane(omapfb_data_t *pdata, int width, int height)
{
int x, y;
struct omapfb_plane_info pi = {0};
float scale = omapfb_scaling(pdata, width, height);
int w = (int)(scale * width);
int h = (int)(scale * height);
RARCH_LOG("omap_video: scaling %dx%d to %dx%d\n", width, height, w, h);
x = pdata->nat_w / 2 - w / 2;
y = pdata->nat_h / 2 - h / 2;
if (width * height * pdata->bpp * pdata->num_pages > pdata->current_state->mi.size)
{
RARCH_ERR("omap_video: fb dimensions too large for allocated buffer\n");
return -1;
}
if (ioctl(pdata->fd, OMAPFB_QUERY_PLANE, &pi) != 0)
{
RARCH_ERR("[video_omap]: setup plane (query) failed\n");
return -1;
}
/* Disable the plane during setup to avoid garbage on screen. */
pi.pos_x = x;
pi.pos_y = y;
pi.out_width = w;
pi.out_height = h;
pi.enabled = 0;
if (ioctl(pdata->fd, OMAPFB_SETUP_PLANE, &pi) != 0)
{
RARCH_ERR("[video_omap]: setup plane (param = %d %d %d %d) failed\n", x, y, w, h);
return -1;
}
pdata->current_state->pi = pi;
return 0;
}
static int omapfb_enable_plane(omapfb_data_t *pdata)
{
struct omapfb_plane_info pi = {0};
if (ioctl(pdata->fd, OMAPFB_QUERY_PLANE, &pi) != 0)
{
RARCH_ERR("[video_omap]: enable plane (query) failed\n");
return -1;
}
pi.enabled = 1;
if (ioctl(pdata->fd, OMAPFB_SETUP_PLANE, &pi) != 0)
{
RARCH_ERR("[video_omap]: enable plane failed\n");
return -1;
}
return 0;
}
static int omapfb_init(omapfb_data_t *pdata, unsigned bpp)
{
const char *fbname = omapfb_get_fb_device();
int fd = open(fbname, O_RDWR);
settings_t *settings = config_get_ptr();
bool video_vsync = settings->bools.video_vsync;
if (fd == -1)
{
RARCH_ERR("[video_omap]: can't open framebuffer device\n");
return -1;
}
pdata->fbname = fbname;
pdata->fd = fd;
if (omapfb_detect_screen(pdata))
{
close(fd);
pdata->fbname = NULL;
pdata->fd = -1;
return -1;
}
/* always use triple buffering to reduce chance of tearing */
pdata->bpp = bpp;
pdata->num_pages = 3;
pdata->sync = video_vsync;
return 0;
}
void omapfb_free(omapfb_data_t *pdata)
{
if (pdata->sync)
ioctl(pdata->fd, OMAPFB_WAITFORGO);
/* unmap the framebuffer memory */
if (pdata->fb_mem)
{
munmap(pdata->fb_mem, pdata->current_state->mi.size);
pdata->fb_mem = NULL;
}
/* restore the framebuffer state (OMAP plane state, screen info) */
if (pdata->saved_state)
{
void *mem;
int enabled = pdata->saved_state->pi.enabled;
/* be sure to disable while setting up */
pdata->saved_state->pi.enabled = 0;
ioctl(pdata->fd, OMAPFB_SETUP_PLANE, &pdata->saved_state->pi);
ioctl(pdata->fd, OMAPFB_SETUP_MEM, &pdata->saved_state->mi);
if (enabled)
{
pdata->saved_state->pi.enabled = enabled;
ioctl(pdata->fd, OMAPFB_SETUP_PLANE, &pdata->saved_state->pi);
}
/* restore framebuffer content */
mem = mmap(0, pdata->saved_state->mi.size, PROT_WRITE|PROT_READ,
MAP_SHARED, pdata->fd, 0);
if (mem != MAP_FAILED)
{
memcpy(mem, pdata->saved_state->mem, pdata->saved_state->mi.size);
munmap(mem, pdata->saved_state->mi.size);
}
/* restore screen info */
ioctl(pdata->fd, FBIOPUT_VSCREENINFO, &pdata->saved_state->si);
free(pdata->saved_state->mem);
pdata->saved_state->mem = NULL;
free(pdata->saved_state);
pdata->saved_state = NULL;
}
free(pdata->current_state);
pdata->current_state = NULL;
close(pdata->fd);
pdata->fd = -1;
}
static int omapfb_set_mode(omapfb_data_t *pdata, int width, int height)
{
if (pdata->sync)
ioctl(pdata->fd, OMAPFB_WAITFORGO);
if (omapfb_setup_plane(pdata, width, height) != 0)
return -1;
if (omapfb_setup_screeninfo(pdata, width, height) != 0 ||
omapfb_setup_pages(pdata) != 0 ||
omapfb_enable_plane(pdata) != 0)
return -1;
return 0;
}
static void omapfb_prepare(omapfb_data_t *pdata)
{
omapfb_page_t *page = NULL;
/* issue flip before getting free page */
omapfb_page_flip(pdata);
page = omapfb_get_page(pdata);
pdata->old_page = pdata->cur_page;
pdata->cur_page = page;
pdata->cur_page->used = true;
}
static void omapfb_blend_glyph_rgb565(omapfb_data_t *pdata,
const uint8_t *src, uint8_t *f_rgb,
unsigned g_width, unsigned g_height, unsigned g_pitch,
unsigned dst_x, unsigned dst_y)
{
unsigned x, y;
unsigned r, g, b;
unsigned dst_pitch = (pdata->current_state->si.xres * pdata->bpp) >> 1;
uint16_t *dst = (uint16_t*)pdata->cur_page->buf + dst_y * dst_pitch + dst_x;
for (y = 0; y < g_height; ++y, src += g_pitch, dst += dst_pitch)
{
for (x = 0; x < g_width; ++x)
{
const uint8_t blend = src[x];
const uint16_t out = dst[x];
if (blend == 0)
continue;
if (blend == 255)
{
omapfb_put_pixel_rgb565(&dst[x], f_rgb[0], f_rgb[1], f_rgb[2]);
continue;
}
r = (out & 0xf800) >> 11;
g = (out & 0x07e0) >> 5;
b = (out & 0x001f) >> 0;
r = (r << 3) | (r >> 2);
g = (g << 2) | (g >> 4);
b = (b << 3) | (b >> 2);
omapfb_put_pixel_rgb565(&dst[x], (r * (256 - blend) + f_rgb[0] * blend) >> 8,
(g * (256 - blend) + f_rgb[1] * blend) >> 8,
(b * (256 - blend) + f_rgb[2] * blend) >> 8);
}
}
}
static void omapfb_blend_glyph_argb8888(omapfb_data_t *pdata,
const uint8_t *src, uint8_t *f_rgb,
unsigned g_width, unsigned g_height, unsigned g_pitch,
unsigned dst_x, unsigned dst_y)
{
unsigned x, y;
unsigned r, g, b;
unsigned dst_pitch = (pdata->current_state->si.xres * pdata->bpp) >> 2;
uint32_t *dst = (uint32_t*)pdata->cur_page->buf + dst_y * dst_pitch + dst_x;
for (y = 0; y < g_height; ++y, src += g_pitch, dst += dst_pitch)
{
for (x = 0; x < g_width; ++x)
{
const uint8_t blend = src[x];
const uint32_t out = dst[x];
if (blend == 0)
continue;
if (blend == 255)
{
omapfb_put_pixel_argb8888(&dst[x], f_rgb[0], f_rgb[1], f_rgb[2]);
continue;
}
r = (out & 0xff0000) >> 16;
g = (out & 0x00ff00) >> 8;
b = (out & 0x0000ff) >> 0;
omapfb_put_pixel_argb8888(&dst[x], (r * (256 - blend) + f_rgb[0] * blend) >> 8,
(g * (256 - blend) + f_rgb[1] * blend) >> 8,
(b * (256 - blend) + f_rgb[2] * blend) >> 8);
}
}
}
static void omapfb_blit_frame(omapfb_data_t *pdata, const void *src,
unsigned height, unsigned src_pitch)
{
unsigned i;
void *dst = pdata->cur_page->buf;
unsigned dst_pitch = pdata->current_state->si.xres * pdata->bpp;
for (i = 0; i < height; i++)
memcpy(dst + dst_pitch * i, src + src_pitch * i, dst_pitch);
}
typedef struct omap_video
{
omapfb_data_t *omap;
void *font;
const font_renderer_driver_t *font_driver;
uint8_t font_rgb[4];
unsigned bytes_per_pixel;
/* current dimensions */
unsigned width;
unsigned height;
struct
{
bool active;
void *frame;
struct scaler_ctx scaler;
} menu;
} omap_video_t;
static void omap_gfx_free(void *data)
{
omap_video_t *vid = data;
if (!vid)
return;
omapfb_free(vid->omap);
free(vid->omap);
if (vid->font)
vid->font_driver->free(vid->font);
scaler_ctx_gen_reset(&vid->menu.scaler);
free(vid->menu.frame);
free(vid);
}
static void omap_init_font(omap_video_t *vid, const char *font_path, unsigned font_size)
{
int r, g, b;
settings_t *settings = config_get_ptr();
bool video_font_enable = settings->bools.video_font_enable;
const char *path_font = settings->paths.path_font;
float video_font_size = settings->floats.video_font_size;
float msg_color_r = settings->floats.video_msg_color_r;
float msg_color_g = settings->floats.video_msg_color_g;
float msg_color_b = settings->floats.video_msg_color_b;
if (!video_font_enable)
return;
if (!(font_renderer_create_default(&vid->font_driver, &vid->font,
*path_font ? path_font : NULL, video_font_size)))
{
RARCH_LOG("[video_omap]: font init failed\n");
return;
}
r = msg_color_r * 255;
g = msg_color_g * 255;
b = msg_color_b * 255;
r = (r < 0) ? 0 : (r > 255 ? 255 : r);
g = (g < 0) ? 0 : (g > 255 ? 255 : g);
b = (b < 0) ? 0 : (b > 255 ? 255 : b);
vid->font_rgb[0] = r;
vid->font_rgb[1] = g;
vid->font_rgb[2] = b;
}
static void omap_render_msg(omap_video_t *vid, const char *msg)
{
const struct font_atlas *atlas = NULL;
settings_t *settings = config_get_ptr();
float msg_pos_x = settings->floats.video_msg_pos_x;
float msg_pos_y = settings->floats.video_msg_pos_y;
int msg_base_x = msg_pos_x * vid->width;
int msg_base_y = (1.0 - msg_pos_y) * vid->height;
if (!vid->font)
return;
atlas = vid->font_driver->get_atlas(vid->font);
for (; *msg; msg++)
{
int base_x, base_y;
int glyph_width, glyph_height;
const uint8_t *src = NULL;
const struct font_glyph *glyph =
vid->font_driver->get_glyph(vid->font, (uint8_t)*msg);
if (!glyph)
continue;
base_x = msg_base_x + glyph->draw_offset_x;
base_y = msg_base_y + glyph->draw_offset_y;
const int max_width = vid->width - base_x;
const int max_height = vid->height - base_y;
glyph_width = glyph->width;
glyph_height = glyph->height;
src = atlas->buffer + glyph->atlas_offset_x +
glyph->atlas_offset_y * atlas->width;
if (base_x < 0)
{
src -= base_x;
glyph_width += base_x;
base_x = 0;
}
if (base_y < 0)
{
src -= base_y * (int)atlas->width;
glyph_height += base_y;
base_y = 0;
}
if (max_width <= 0 || max_height <= 0)
continue;
if (glyph_width > max_width)
glyph_width = max_width;
if (glyph_height > max_height)
glyph_height = max_height;
if (vid->bytes_per_pixel == 2)
{
omapfb_blend_glyph_rgb565(vid->omap, src, vid->font_rgb,
glyph_width, glyph_height,
atlas->width, base_x, base_y);
}
else
{
omapfb_blend_glyph_argb8888(vid->omap, src, vid->font_rgb,
glyph_width, glyph_height,
atlas->width, base_x, base_y);
}
msg_base_x += glyph->advance_x;
msg_base_y += glyph->advance_y;
}
}
/* FIXME/TODO: Filters not supported. */
static void *omap_gfx_init(const video_info_t *video,
input_driver_t **input, void **input_data)
{
settings_t *settings = config_get_ptr();
omap_video_t *vid = (omap_video_t*)calloc(1, sizeof(omap_video_t));
if (!vid)
return NULL;
vid->omap = (omapfb_data_t*)calloc(1, sizeof(omapfb_data_t));
if (!vid->omap)
goto fail;
vid->bytes_per_pixel = video->rgb32 ? 4 : 2;
if (omapfb_init(vid->omap, vid->bytes_per_pixel) != 0)
goto fail_omapfb;
if (omapfb_backup_state(vid->omap) != 0 ||
omapfb_alloc_mem(vid->omap) != 0 ||
omapfb_mmap(vid->omap) != 0)
goto fail_omapfb;
/* set some initial mode for the menu */
vid->width = 320;
vid->height = 240;
if (omapfb_set_mode(vid->omap, vid->width, vid->height) != 0)
goto fail_omapfb;
if (input && input_data)
*input = NULL;
omap_init_font(vid, settings->paths.path_font, settings->video.font_size);
vid->menu.frame = calloc(vid->width * vid->height, vid->bytes_per_pixel);
if (!vid->menu.frame)
goto fail_omapfb;
vid->menu.scaler.scaler_type = SCALER_TYPE_BILINEAR;
vid->menu.scaler.out_fmt = (vid->bytes_per_pixel == 4)
? SCALER_FMT_ARGB8888 : SCALER_FMT_RGB565;
return vid;
fail_omapfb:
omapfb_free(vid->omap);
free(vid->omap);
fail:
free(vid);
RARCH_ERR("[video_omap]: initialization failed\n");
return NULL;
}
static bool omap_gfx_frame(void *data, const void *frame, unsigned width,
unsigned height, uint64_t frame_count, unsigned pitch, const char *msg,
video_frame_info_t *video_info)
{
omap_video_t *vid = (omap_video_t*)data;
#ifdef HAVE_MENU
bool menu_is_alive = video_info->menu_is_alive;
#endif
if (!frame)
return true;
if ( (width > 4)
&& (height > 4)
&& (width != vid->width || height != vid->height))
{
RARCH_LOG("[video_omap]: mode set (resolution changed by core)\n");
if (omapfb_set_mode(vid->omap, width, height) != 0)
{
RARCH_ERR("[video_omap]: mode set failed\n");
return false;
}
vid->width = width;
vid->height = height;
}
omapfb_prepare(vid->omap);
omapfb_blit_frame(vid->omap, frame, vid->height, pitch);
#ifdef HAVE_MENU
menu_driver_frame(menu_is_alive, video_info);
if (vid->menu.active)
omapfb_blit_frame(vid->omap, vid->menu.frame,
vid->menu.scaler.out_height,
vid->menu.scaler.out_stride);
#endif
if (msg)
omap_render_msg(vid, msg);
return true;
}
static void omap_gfx_set_nonblock_state(void *data, bool state,
bool adaptive_vsync_enabled, unsigned swap_interval)
{
omap_video_t *vid;
if (!data)
return;
vid = data;
vid->omap->sync = !state;
}
static bool omap_gfx_alive(void *data) { return true; /* always alive */ }
static bool omap_gfx_focus(void *data) { return true; /* fb device always has focus */ }
static void omap_gfx_viewport_info(void *data, struct video_viewport *vp)
{
omap_video_t *vid = (omap_video_t*)data;
if (!vid)
return;
vp->x = vp->y = 0;
vp->width = vp->full_width = vid->width;
vp->height = vp->full_height = vid->height;
}
static bool omap_gfx_suppress_screensaver(void *data, bool enable) { return false; }
static bool omap_gfx_has_windowed(void *data) { return true; }
static bool omap_gfx_set_shader(void *data,
enum rarch_shader_type type, const char *path) { return false; }
static void omap_gfx_set_texture_frame(void *data, const void *frame, bool rgb32,
unsigned width, unsigned height, float alpha)
{
omap_video_t *vid = (omap_video_t*)data;
enum scaler_pix_fmt format = rgb32 ? SCALER_FMT_ARGB8888 : SCALER_FMT_RGBA4444;
video_frame_scale(
&vid->menu.scaler,
vid->menu.frame,
frame,
format,
vid->width,
vid->height,
vid->width * vid->bytes_per_pixel,
width,
height,
width * (rgb32 ? sizeof(uint32_t) : sizeof(uint16_t)));
}
static void omap_gfx_set_texture_enable(void *data, bool state, bool full_screen)
{
omap_video_t *vid = (omap_video_t*)data;
vid->menu.active = state;
(void) full_screen;
}
static float omap_get_refresh_rate(void *data)
{
omap_video_t *vid = (omap_video_t*)data;
struct fb_var_screeninfo *s = &vid->omap->current_state->si;
return 1000000.0f / s->pixclock /
(s->xres + s->left_margin + s->right_margin + s->hsync_len) * 1000000.0f /
(s->yres + s->upper_margin + s->lower_margin + s->vsync_len);
}
static const video_poke_interface_t omap_gfx_poke_interface = {
NULL, /* get_flags */
NULL,
NULL,
NULL,
omap_get_refresh_rate,
NULL, /* set_filtering */
NULL, /* get_video_output_size */
NULL, /* get_video_output_prev */
NULL, /* get_video_output_next */
NULL, /* get_current_framebuffer */
NULL, /* get_proc_address */
NULL, /* set_aspect_ratio */
NULL, /* apply_state_changes */
omap_gfx_set_texture_frame,
omap_gfx_set_texture_enable,
NULL,
NULL, /* show_mouse */
NULL, /* grab_mouse_toggle */
NULL, /* get_current_shader */
NULL, /* get_current_software_framebuffer */
NULL, /* get_hw_render_interface */
NULL, /* set_hdr_max_nits */
NULL, /* set_hdr_paper_white_nits */
NULL, /* set_hdr_contrast */
NULL /* set_hdr_expand_gamut */
};
static void omap_gfx_get_poke_interface(void *data,
const video_poke_interface_t **iface)
{
(void)data;
*iface = &omap_gfx_poke_interface;
}
video_driver_t video_omap = {
omap_gfx_init,
omap_gfx_frame,
omap_gfx_set_nonblock_state,
omap_gfx_alive,
omap_gfx_focus,
omap_gfx_suppress_screensaver,
omap_gfx_has_windowed,
omap_gfx_set_shader,
omap_gfx_free,
"omap",
NULL, /* set_viewport */
NULL, /* set_rotation */
omap_gfx_viewport_info,
NULL, /* read_viewport */
NULL, /* read_frame_raw */
#ifdef HAVE_OVERLAY
NULL, /* overlay_interface */
#endif
omap_gfx_get_poke_interface
};
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