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RetroArch/gfx/omap_gfx.c
Themaister 9a861fba6d Untested: Rewrite omap_gfx font rendering.
2014-06-09 12:52:21 +02:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* 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 "../driver.h"
#include <stdlib.h>
#include <string.h>
#include "../general.h"
#include "scaler/scaler.h"
#include "gfx_common.h"
#include "gfx_context.h"
#include "fonts/fonts.h"
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <ctype.h>
#include <assert.h>
#include <sys/mman.h>
#include <linux/omapfb.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
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 *get_fb_device(void) {
const int fbidx = g_settings.video.monitor_index;
static char fbname[12];
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 *get_page(omapfb_data_t *pdata) {
omapfb_page_t *page = NULL;
unsigned i;
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 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 read_sysfs(const char *fname, char *buff, size_t size) {
FILE *f;
int ret;
f = fopen(fname, "r");
if (f == NULL) 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 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 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) {
int fb_id, overlay_id = -1, display_id = -1;
char buff[64], manager_name[64], display_name[64];
struct stat status;
int fd, i, ret;
int w, h;
FILE *f;
/* 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 == NULL) {
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 = 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 = read_sysfs(buff, buff, sizeof(buff));
if (ret < 0) break;
if (strcmp(manager_name, buff) == 0) {
snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/manager%d/display", i);
ret = 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 = read_sysfs(buff, buff, sizeof(buff));
if (ret < 0) break;
if (strcmp(display_name, buff) == 0) {
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 == NULL) {
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 == NULL) {
pdata->pages = calloc(pdata->num_pages, sizeof(omapfb_page_t));
if (pdata->pages == NULL) {
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 = 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);
page_flip(pdata);
pdata->cur_page->used = true;
return 0;
}
static int omapfb_mmap(omapfb_data_t *pdata) {
assert(pdata->fb_mem == NULL);
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) {
struct omapfb_plane_info pi;
struct omapfb_mem_info mi;
void* mem;
assert(pdata->saved_state == 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 == NULL || 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) {
struct omapfb_plane_info pi;
struct omapfb_mem_info mi;
const struct retro_game_geometry *geom;
unsigned mem_size;
void* mem;
assert(pdata->current_state == NULL);
pdata->current_state = calloc(1, sizeof(omapfb_state_t));
if (!pdata->current_state) return -1;
if (ioctl(pdata->fd, OMAPFB_QUERY_PLANE, &pi) != 0) {
RARCH_ERR("video_omap: alloc mem (query plane) failed\n");
return -1;
}
if (ioctl(pdata->fd, OMAPFB_QUERY_MEM, &mi) != 0) {
RARCH_ERR("video_omap: alloc mem (query mem) failed\n");
return -1;
}
/* 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");
return -1;
}
}
geom = &g_extern.system.av_info.geometry;
mem_size = geom->max_width * geom->max_height *
pdata->bpp * pdata->num_pages;
mi.size = mem_size;
if (ioctl(pdata->fd, OMAPFB_SETUP_MEM, &mi) != 0) {
RARCH_ERR("video_omap: allocation of %d bytes of VRAM failed\n", mem_size);
return -1;
}
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");
return -1;
}
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;
}
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) {
struct omapfb_plane_info pi = {0};
int x, y, w, h;
float scale;
scale = omapfb_scaling(pdata, width, height);
w = (int)(scale * width);
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;
int fd;
fbname = get_fb_device();
fd = open(fbname, O_RDWR);
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 = g_settings.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 != NULL) {
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 != NULL) {
int enabled;
void *mem;
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;
/* issue flip before getting free page */
page_flip(pdata);
page = get_page(pdata);
assert(page != NULL);
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 dst_pitch;
uint16_t *dst;
unsigned r, g, b;
dst_pitch = (pdata->current_state->si.xres * pdata->bpp) >> 1;
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) {
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);
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 dst_pitch;
uint32_t *dst;
unsigned r, g, b;
dst_pitch = (pdata->current_state->si.xres * pdata->bpp) >> 2;
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) {
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;
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, dst_pitch;
void *dst;
dst = pdata->cur_page->buf;
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;
} 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);
free(vid);
}
static void omap_init_font(omap_video_t *vid, const char *font_path, unsigned font_size) {
if (!g_settings.video.font_enable) return;
if (font_renderer_create_default(&vid->font_driver, &vid->font,
*g_settings.video.font_path ? g_settings.video.font_path : NULL, g_settings.video.font_size)) {
int r = g_settings.video.msg_color_r * 255;
int g = g_settings.video.msg_color_g * 255;
int b = g_settings.video.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;
} else {
RARCH_LOG("video_omap: font init failed\n");
}
}
static void omap_render_msg(omap_video_t *vid, const char *msg) {
int msg_base_x = g_settings.video.msg_pos_x * vid->width;
int msg_base_y = (1.0 - g_settings.video.msg_pos_y) * vid->height;
if (vid->font == NULL) return;
const struct font_atlas *atlas = vid->font_driver->get_atlas(vid->font);
for (; *msg; msg++) {
const struct font_glyph *glyph = vid->font_driver->get_glyph(vid->font, (uint8_t)*msg);
if (!glyph) continue;
int base_x = msg_base_x + glyph->draw_offset_x;
int 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;
int glyph_width = head->width;
int glyph_height = head->height;
const uint8_t *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;
}
}
static void *omap_gfx_init(const video_info_t *video, const input_driver_t **input, void **input_data) {
omap_video_t *vid = NULL;
/* Don't support filters at the moment since they make estimations *
* on the maximum used resolution difficult. */
if (g_extern.filter.active) {
RARCH_ERR("video_omap: filters are not supported\n");
return NULL;
}
vid = calloc(1, sizeof(omap_video_t));
if (!vid) return NULL;
vid->omap = 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;
if (input && input_data) {
*input = NULL;
}
omap_init_font(vid, g_settings.video.font_path, g_settings.video.font_size);
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, unsigned pitch, const char *msg) {
omap_video_t *vid;
if (!frame) return true;
vid = data;
if (width != vid->width || height != vid->height) {
if (width == 0 || height == 0) return true;
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);
if (msg) omap_render_msg(vid, msg);
g_extern.frame_count++;
return true;
}
static void omap_gfx_set_nonblock_state(void *data, bool state) {
omap_video_t *vid;
if (data == NULL) return;
vid = data;
vid->omap->sync = !state;
}
static bool omap_gfx_alive(void *data) {
(void)data;
return true; /* always alive */
}
static bool omap_gfx_focus(void *data) {
(void)data;
return true; /* fb device always has focus */
}
static void omap_gfx_viewport_info(void *data, struct rarch_viewport *vp) {
omap_video_t *vid = (omap_video_t*)data;
vp->x = vp->y = 0;
vp->width = vp->full_width = vid->width;
vp->height = vp->full_height = vid->height;
}
const video_driver_t video_omap = {
omap_gfx_init,
omap_gfx_frame,
omap_gfx_set_nonblock_state,
omap_gfx_alive,
omap_gfx_focus,
NULL, /* set_shader */
omap_gfx_free,
"omap",
NULL, /* set_rotation */
omap_gfx_viewport_info,
NULL, /* read_viewport */
#ifdef HAVE_OVERLAY
NULL, /* overlay_interface */
#endif
NULL /* poke_interface */
};
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