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RetroArch/gfx/drivers/exynos_gfx.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2013-2015 - Tobias Jakobi
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* 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 <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <poll.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <drm_fourcc.h>
#include <libdrm/exynos_drmif.h>
#include <exynos/exynos_fimg2d.h>
#include <retro_inline.h>
#include <retro_assert.h>
#include <string/stdstring.h>
#ifdef HAVE_CONFIG_H
#include "../../config.h"
#endif
#ifdef HAVE_MENU
#include "../../menu/menu_driver.h"
#endif
#include "../common/drm_common.h"
#include "../font_driver.h"
#include "../../configuration.h"
#include "../../retroarch.h"
/* TODO: Honor these properties: vsync, menu rotation, menu alpha, aspect ratio change */
/* Set to '1' to enable debug logging code. */
#define EXYNOS_GFX_DEBUG_LOG 0
/* Set to '1' to enable debug perf code. */
#define EXYNOS_GFX_DEBUG_PERF 0
extern void *memcpy_neon(void *dst, const void *src, size_t n);
/* We use two GEM buffers (main and aux) to handle 'data' from the frontend. */
enum exynos_buffer_type
{
EXYNOS_BUFFER_MAIN = 0,
EXYNOS_BUFFER_AUX,
EXYNOS_BUFFER_COUNT
};
/* We have to handle three types of 'data' from the frontend, each abstracted by a *
* G2D image object. The image objects are then backed by some storage buffer. *
* (1) the core framebuffer (backed by main buffer) *
* (2) the menu buffer (backed by aux buffer) *
* (3) the font rendering buffer (backed by aux buffer) */
enum exynos_image_type
{
EXYNOS_IMAGE_FRAME = 0,
EXYNOS_IMAGE_FRONT,
EXYNOS_IMAGE_MENU,
EXYNOS_IMAGE_COUNT
};
static const struct exynos_config_default
{
unsigned width, height;
enum exynos_buffer_type buf_type;
unsigned g2d_color_mode;
unsigned bpp; /* bytes per pixel */
} defaults[EXYNOS_IMAGE_COUNT] = {
{1024, 640, EXYNOS_BUFFER_MAIN, G2D_COLOR_FMT_RGB565 | G2D_ORDER_AXRGB, 2}, /* frame */
{720, 368, EXYNOS_BUFFER_AUX, G2D_COLOR_FMT_ARGB4444 | G2D_ORDER_AXRGB, 2}, /* font */
{400, 240, EXYNOS_BUFFER_AUX, G2D_COLOR_FMT_ARGB4444 | G2D_ORDER_RGBAX, 2} /* menu */
};
struct exynos_data;
#if (EXYNOS_GFX_DEBUG_PERF == 1)
struct exynos_perf
{
unsigned memcpy_calls;
unsigned g2d_calls;
unsigned long long memcpy_time;
unsigned long long g2d_time;
struct timespec tspec;
};
#endif
struct exynos_page
{
struct exynos_bo *bo;
uint32_t buf_id;
struct exynos_data *base;
bool used; /* Set if page is currently used. */
bool clear; /* Set if page has to be cleared. */
};
struct exynos_data
{
char drmname[32];
struct exynos_device *device;
/* G2D is used for scaling to framebuffer dimensions. */
struct g2d_context *g2d;
struct g2d_image *dst;
struct g2d_image *src[EXYNOS_IMAGE_COUNT];
struct exynos_bo *buf[EXYNOS_BUFFER_COUNT];
struct exynos_page *pages;
unsigned num_pages;
/* currently displayed page */
struct exynos_page *cur_page;
unsigned pageflip_pending;
/* framebuffer dimensions */
unsigned width, height;
/* framebuffer aspect ratio */
float aspect;
/* parameters for blitting core fb to screen */
unsigned blit_params[6];
/* bytes per pixel */
unsigned bpp;
/* framebuffer parameters */
unsigned pitch, size;
bool sync;
#if (EXYNOS_GFX_DEBUG_PERF == 1)
struct exynos_perf perf;
#endif
};
static INLINE unsigned align_common(unsigned i, unsigned j)
{
return (i + j - 1) & ~(j - 1);
}
/* Find the index of a compatible DRM device. */
static int exynos_get_device_index(void)
{
drmVersionPtr ver;
char buf[32] = {0};
int index = 0;
bool found = false;
while (!found)
{
int fd;
snprintf(buf, sizeof(buf), "/dev/dri/card%d", index);
fd = open(buf, O_RDWR);
if (fd < 0) break;
ver = drmGetVersion(fd);
if (string_is_equal_fast(ver->name, "exynos", 6))
found = true;
else
++index;
drmFreeVersion(ver);
close(fd);
}
if (!found)
return -1;
return index;
}
/* The main pageflip handler, which the DRM executes
* when it flips to the page.
*
* Decreases the pending pageflip count and
* updates the current page.
*/
static void exynos_page_flip_handler(int fd, unsigned frame, unsigned sec,
unsigned usec, void *data)
{
struct exynos_page *page = data;
#if (EXYNOS_GFX_DEBUG_LOG == 1)
RARCH_LOG("[video_exynos]: in exynos_page_flip_handler, page = %p\n", page);
#endif
if (page->base->cur_page)
page->base->cur_page->used = false;
page->base->pageflip_pending--;
page->base->cur_page = page;
}
static struct exynos_page *exynos_get_free_page(
struct exynos_page *p, unsigned cnt)
{
unsigned i;
for (i = 0; i < cnt; ++i)
{
if (!p[i].used)
return &p[i];
}
return NULL;
}
/* Count the number of used pages. */
static unsigned exynos_pages_used(struct exynos_page *p, unsigned cnt)
{
unsigned i;
unsigned count = 0;
for (i = 0; i < cnt; ++i)
{
if (p[i].used)
++count;
}
return count;
}
static void exynos_clean_up_pages(struct exynos_page *p, unsigned cnt)
{
unsigned i;
for (i = 0; i < cnt; ++i)
{
if (p[i].bo != NULL)
{
if (p[i].buf_id != 0)
drmModeRmFB(p[i].buf_id, p[i].bo->handle);
exynos_bo_destroy(p[i].bo);
}
}
}
#if (EXYNOS_GFX_DEBUG_LOG == 1)
static const char *exynos_buffer_name(enum exynos_buffer_type type)
{
switch (type)
{
case EXYNOS_BUFFER_MAIN:
return "main";
case EXYNOS_BUFFER_AUX:
return "aux";
default:
retro_assert(false);
break;
}
return NULL;
}
#endif
/* Create a GEM buffer with userspace mapping.
* Buffer is cleared after creation. */
static struct exynos_bo *exynos_create_mapped_buffer(
struct exynos_device *dev, unsigned size)
{
const unsigned flags = 0;
struct exynos_bo *buf = exynos_bo_create(dev, size, flags);
if (!buf)
{
RARCH_ERR("[video_exynos]: failed to create temp buffer object\n");
return NULL;
}
if (!exynos_bo_map(buf))
{
RARCH_ERR("[video_exynos]: failed to map temp buffer object\n");
exynos_bo_destroy(buf);
return NULL;
}
memset(buf->vaddr, 0, size);
return buf;
}
static int exynos_realloc_buffer(struct exynos_data *pdata,
enum exynos_buffer_type type, unsigned size)
{
struct exynos_bo *buf = pdata->buf[type];
if (!buf)
return -1;
if (size > buf->size)
{
unsigned i;
#if (EXYNOS_GFX_DEBUG_LOG == 1)
RARCH_LOG("[video_exynos]: reallocating %s buffer (%u -> %u bytes)\n",
exynos_buffer_name(type), buf->size, size);
#endif
exynos_bo_destroy(buf);
buf = exynos_create_mapped_buffer(pdata->device, size);
if (!buf)
{
RARCH_ERR("[video_exynos]: reallocation failed\n");
return -1;
}
pdata->buf[type] = buf;
/* Map new GEM buffer to the G2D images backed by it. */
for (i = 0; i < EXYNOS_IMAGE_COUNT; ++i)
{
if (defaults[i].buf_type == type)
pdata->src[i]->bo[0] = buf->handle;
}
}
return 0;
}
/* Clear a buffer associated to a G2D image by doing a (fast) solid fill. */
static int exynos_clear_buffer(struct g2d_context *g2d, struct g2d_image *img)
{
int ret = g2d_solid_fill(g2d, img, 0, 0, img->width, img->height);
if (ret == 0)
ret = g2d_exec(g2d);
if (ret != 0)
RARCH_ERR("[video_exynos]: failed to clear buffer using G2D\n");
return ret;
}
/* Put a font glyph at a position in the buffer that is backing the G2D font image object. */
static void exynos_put_glyph_rgba4444(struct exynos_data *pdata,
const uint8_t *__restrict__ src,
uint16_t color, unsigned g_width, unsigned g_height,
unsigned g_pitch, unsigned dst_x, unsigned dst_y)
{
unsigned x, y;
const enum exynos_image_type buf_type = defaults[EXYNOS_IMAGE_FONT].buf_type;
const unsigned buf_width = pdata->src[EXYNOS_IMAGE_FONT]->width;
uint16_t *__restrict__ dst = (uint16_t*)pdata->buf[buf_type]->vaddr +
dst_y * buf_width + dst_x;
for (y = 0; y < g_height; ++y, src += g_pitch, dst += buf_width)
{
for (x = 0; x < g_width; ++x)
{
const uint16_t blend = src[x];
dst[x] = color | ((blend << 8) & 0xf000);
}
}
}
#if (EXYNOS_GFX_DEBUG_PERF == 1)
static void exynos_perf_init(struct exynos_perf *p)
{
p->memcpy_calls = 0;
p->g2d_calls = 0;
p->memcpy_time = 0;
p->g2d_time = 0;
memset(&p->tspec, 0, sizeof(struct timespec));
}
static void exynos_perf_finish(struct exynos_perf *p)
{
RARCH_LOG("[video_exynos]: debug: total memcpy calls: %u\n", p->memcpy_calls);
RARCH_LOG("[video_exynos]: debug: total g2d calls: %u\n", p->g2d_calls);
RARCH_LOG("[video_exynos]: debug: total memcpy time: %f seconds\n",
(double)p->memcpy_time / 1000000.0);
RARCH_LOG("[video_exynos]: debug: total g2d time: %f seconds\n",
(double)p->g2d_time / 1000000.0);
RARCH_LOG("[video_exynos]: debug: average time per memcpy call: %f microseconds\n",
(double)p->memcpy_time / (double)p->memcpy_calls);
RARCH_LOG("[video_exynos]: debug: average time per g2d call: %f microseconds\n",
(double)p->g2d_time / (double)p->g2d_calls);
}
static void exynos_perf_memcpy(struct exynos_perf *p, bool start)
{
if (start)
clock_gettime(CLOCK_MONOTONIC, &p->tspec);
else
{
struct timespec new = { 0 };
clock_gettime(CLOCK_MONOTONIC, &new);
p->memcpy_time += (new.tv_sec - p->tspec.tv_sec) * 1000000;
p->memcpy_time += (new.tv_nsec - p->tspec.tv_nsec) / 1000;
++p->memcpy_calls;
}
}
static void exynos_perf_g2d(struct exynos_perf *p, bool start)
{
if (start)
clock_gettime(CLOCK_MONOTONIC, &p->tspec);
else
{
struct timespec new = { 0 };
clock_gettime(CLOCK_MONOTONIC, &new);
p->g2d_time += (new.tv_sec - p->tspec.tv_sec) * 1000000;
p->g2d_time += (new.tv_nsec - p->tspec.tv_nsec) / 1000;
++p->g2d_calls;
}
}
#endif
static int exynos_g2d_init(struct exynos_data *pdata)
{
unsigned i;
struct g2d_image *dst = NULL;
struct g2d_context *g2d = g2d_init(g_drm_fd);
if (!g2d)
return -1;
dst = calloc(1, sizeof(struct g2d_image));
if (!dst)
goto fail;
dst->buf_type = G2D_IMGBUF_GEM;
dst->color_mode = (pdata->bpp == 2) ? G2D_COLOR_FMT_RGB565 | G2D_ORDER_AXRGB :
G2D_COLOR_FMT_ARGB8888 | G2D_ORDER_AXRGB;
dst->width = pdata->width;
dst->height = pdata->height;
dst->stride = pdata->pitch;
dst->color = 0xff000000; /* Clear color for solid fill operation. */
for (i = 0; i < EXYNOS_IMAGE_COUNT; ++i)
{
const enum exynos_buffer_type buf_type = defaults[i].buf_type;
const unsigned buf_size = defaults[i].width * defaults[i].height * defaults[i].bpp;
struct g2d_image *src = (struct g2d_image*)calloc(1, sizeof(struct g2d_image));
if (!src)
break;
src->width = defaults[i].width;
src->height = defaults[i].height;
src->stride = defaults[i].width * defaults[i].bpp;
src->color_mode = defaults[i].g2d_color_mode;
/* Associate GEM buffer storage with G2D image. */
src->buf_type = G2D_IMGBUF_GEM;
src->bo[0] = pdata->buf[buf_type]->handle;
src->repeat_mode = G2D_REPEAT_MODE_PAD; /* Pad creates no border artifacts. */
/* Make sure that the storage buffer is large enough. If the code is working *
* properly, then this is just a NOP. Still put it here as an insurance. */
exynos_realloc_buffer(pdata, buf_type, buf_size);
pdata->src[i] = src;
}
if (i != EXYNOS_IMAGE_COUNT)
{
while (i-- > 0)
{
free(pdata->src[i]);
pdata->src[i] = NULL;
}
goto fail_src;
}
pdata->dst = dst;
pdata->g2d = g2d;
return 0;
fail_src:
free(dst);
fail:
g2d_fini(g2d);
return -1;
}
static void exynos_g2d_free(struct exynos_data *pdata)
{
unsigned i;
free(pdata->dst);
for (i = 0; i < EXYNOS_IMAGE_COUNT; ++i)
{
free(pdata->src[i]);
pdata->src[i] = NULL;
}
g2d_fini(pdata->g2d);
}
static int exynos_open(struct exynos_data *pdata)
{
unsigned i;
int fd = -1;
char buf[32] = {0};
int devidx = exynos_get_device_index();
if (pdata)
g_drm_fd = -1;
if (devidx != -1)
snprintf(buf, sizeof(buf), "/dev/dri/card%d", devidx);
else
{
RARCH_ERR("[video_exynos]: no compatible DRM device found\n");
return -1;
}
fd = open(buf, O_RDWR);
if (fd < 0)
{
RARCH_ERR("[video_exynos]: can't open DRM device\n");
return -1;
}
if (!drm_get_resources(fd))
goto fail;
if (!drm_get_decoder(fd))
goto fail;
if (!drm_get_encoder(fd))
goto fail;
/* Setup the flip handler. */
g_drm_fds.fd = fd;
g_drm_fds.events = POLLIN;
g_drm_evctx.version = DRM_EVENT_CONTEXT_VERSION;
g_drm_evctx.page_flip_handler = exynos_page_flip_handler;
strncpy(pdata->drmname, buf, sizeof(buf));
g_drm_fd = fd;
RARCH_LOG("[video_exynos]: using DRM device \"%s\" with connector id %u.\n",
pdata->drmname, g_drm_connector->connector_id);
return 0;
fail:
drm_free();
close(g_drm_fd);
return -1;
}
/* Counterpart to exynos_open. */
static void exynos_close(struct exynos_data *pdata)
{
memset(pdata->drmname, 0, sizeof(char) * 32);
drm_free();
close(g_drm_fd);
g_drm_fd = -1;
}
static int exynos_init(struct exynos_data *pdata, unsigned bpp)
{
unsigned i;
settings_t *settings = config_get_ptr();
if (settings->uints.video_fullscreen_x != 0 &&
settings->uints.video_fullscreen_y != 0)
{
for (i = 0; i < g_drm_connector->count_modes; i++)
{
if (g_drm_connector->modes[i].hdisplay == settings->uints.video_fullscreen_x &&
g_drm_connector->modes[i].vdisplay == settings->uints.video_fullscreen_y)
{
g_drm_mode = &g_drm_connector->modes[i];
break;
}
}
if (!g_drm_mode)
{
RARCH_ERR("[video_exynos]: requested resolution (%ux%u) not available\n",
settings->uints.video_fullscreen_x,
settings->uints.video_fullscreen_y);
goto fail;
}
}
else
{
/* Select first mode, which is the native one. */
g_drm_mode = &g_drm_connector->modes[0];
}
if (g_drm_mode->hdisplay == 0 || g_drm_mode->vdisplay == 0)
{
RARCH_ERR("[video_exynos]: failed to select sane resolution\n");
goto fail;
}
drm_setup(g_drm_fd);
pdata->width = g_drm_mode->hdisplay;
pdata->height = g_drm_mode->vdisplay;
pdata->aspect = (float)g_drm_mode->hdisplay / (float)g_drm_mode->vdisplay;
/* Always use triple buffering to reduce chance of tearing. */
pdata->num_pages = 3;
pdata->bpp = bpp;
pdata->pitch = bpp * pdata->width;
pdata->size = pdata->pitch * pdata->height;
RARCH_LOG("[video_exynos]: selected %ux%u resolution with %u bpp\n",
pdata->width, pdata->height, pdata->bpp);
return 0;
fail:
drm_restore_crtc();
g_drm_mode = NULL;
return -1;
}
/* Counterpart to exynos_init. */
static void exynos_deinit(struct exynos_data *pdata)
{
drm_restore_crtc();
pdata->width = 0;
pdata->height = 0;
pdata->num_pages = 0;
pdata->bpp = 0;
pdata->pitch = 0;
pdata->size = 0;
}
static int exynos_alloc(struct exynos_data *pdata)
{
struct exynos_bo *bo;
struct exynos_page *pages;
unsigned i;
uint32_t pixel_format;
const unsigned flags = 0;
uint32_t handles[4] = {0}, pitches[4] = {0}, offsets[4] = {0};
struct exynos_device *device = exynos_device_create(g_drm_fd);
if (!device)
{
RARCH_ERR("[video_exynos]: failed to create device from fd\n");
return -1;
}
pages = (struct exynos_page*)calloc(pdata->num_pages,
sizeof(struct exynos_page));
if (!pages)
{
RARCH_ERR("[video_exynos]: failed to allocate pages\n");
goto fail_alloc;
}
for (i = 0; i < EXYNOS_BUFFER_COUNT; ++i)
{
const unsigned buffer_size = defaults[i].width * defaults[i].height * defaults[i].bpp;
bo = exynos_create_mapped_buffer(device, buffer_size);
if (!bo)
break;
pdata->buf[i] = bo;
}
if (i != EXYNOS_BUFFER_COUNT)
{
while (i-- > 0)
{
exynos_bo_destroy(pdata->buf[i]);
pdata->buf[i] = NULL;
}
goto fail;
}
for (i = 0; i < pdata->num_pages; ++i)
{
bo = exynos_bo_create(device, pdata->size, flags);
if (!bo)
{
RARCH_ERR("[video_exynos]: failed to create buffer object\n");
goto fail;
}
/* Don't map the BO, since we don't access it through userspace. */
pages[i].bo = bo;
pages[i].base = pdata;
pages[i].used = false;
pages[i].clear = true;
}
pixel_format = (pdata->bpp == 2) ? DRM_FORMAT_RGB565 : DRM_FORMAT_XRGB8888;
pitches[0] = pdata->pitch;
offsets[0] = 0;
for (i = 0; i < pdata->num_pages; ++i)
{
handles[0] = pages[i].bo->handle;
if (drmModeAddFB2(g_drm_fd, pdata->width, pdata->height,
pixel_format, handles, pitches, offsets,
&pages[i].buf_id, flags))
{
RARCH_ERR("[video_exynos]: failed to add bo %u to fb\n", i);
goto fail;
}
}
/* Setup CRTC: display the last allocated page. */
if (drmModeSetCrtc(g_drm_fd, g_crtc_id,
pages[pdata->num_pages - 1].buf_id,
0, 0, &g_drm_connector_id, 1, g_drm_mode))
{
RARCH_ERR("[video_exynos]: initial CRTC setup failed.\n");
goto fail;
}
pdata->pages = pages;
pdata->device = device;
return 0;
fail:
exynos_clean_up_pages(pages, pdata->num_pages);
fail_alloc:
exynos_device_destroy(device);
return -1;
}
/* Counterpart to exynos_alloc. */
static void exynos_free(struct exynos_data *pdata)
{
unsigned i;
/* Disable the CRTC. */
if (drmModeSetCrtc(g_drm_fd, g_crtc_id, 0,
0, 0, NULL, 0, NULL))
RARCH_WARN("[video_exynos]: failed to disable the CRTC.\n");
exynos_clean_up_pages(pdata->pages, pdata->num_pages);
free(pdata->pages);
pdata->pages = NULL;
for (i = 0; i < EXYNOS_BUFFER_COUNT; ++i)
{
exynos_bo_destroy(pdata->buf[i]);
pdata->buf[i] = NULL;
}
exynos_device_destroy(pdata->device);
pdata->device = NULL;
}
#if (EXYNOS_GFX_DEBUG_LOG == 1)
static void exynos_alloc_status(struct exynos_data *pdata)
{
unsigned i;
struct exynos_page *pages = pdata->pages;
RARCH_LOG("[video_exynos]: Allocated %u pages with %u bytes each (pitch = %u bytes)\n",
pdata->num_pages, pdata->size, pdata->pitch);
for (i = 0; i < pdata->num_pages; ++i)
{
RARCH_LOG("[video_exynos]: page %u: BO at %p, buffer id = %u\n",
i, pages[i].bo, pages[i].buf_id);
}
}
#endif
/* Find a free page, clear it if necessary, and return the page. If *
* no free page is available when called, wait for a page flip. */
static struct exynos_page *exynos_free_page(struct exynos_data *pdata)
{
struct exynos_page *page = NULL;
struct g2d_image *dst = pdata->dst;
/* Wait until a free page is available. */
while (!page)
{
page = exynos_get_free_page(pdata->pages, pdata->num_pages);
if (!page)
drm_wait_flip(-1);
}
dst->bo[0] = page->bo->handle;
if (page->clear)
{
if (exynos_clear_buffer(pdata->g2d, dst) == 0)
page->clear = false;
}
page->used = true;
return page;
}
static void exynos_setup_scale(struct exynos_data *pdata,
unsigned width, unsigned height, unsigned src_bpp)
{
unsigned i;
unsigned w, h;
struct g2d_image *src = pdata->src[EXYNOS_IMAGE_FRAME];
const float aspect = (float)width / (float)height;
src->width = width;
src->height = height;
src->color_mode = (src_bpp == 2) ?
G2D_COLOR_FMT_RGB565 | G2D_ORDER_AXRGB:
G2D_COLOR_FMT_XRGB8888 | G2D_ORDER_AXRGB;
if (fabsf(pdata->aspect - aspect) < 0.0001f)
{
w = pdata->width;
h = pdata->height;
}
else
{
if (pdata->aspect > aspect)
{
w = (float)pdata->width * aspect / pdata->aspect;
h = pdata->height;
}
else
{
w = pdata->width;
h = (float)pdata->height * pdata->aspect / aspect;
}
}
pdata->blit_params[0] = (pdata->width - w) / 2;
pdata->blit_params[1] = (pdata->height - h) / 2;
pdata->blit_params[2] = w;
pdata->blit_params[3] = h;
pdata->blit_params[4] = width;
pdata->blit_params[5] = height;
for (i = 0; i < pdata->num_pages; ++i)
pdata->pages[i].clear = true;
}
static void exynos_set_fake_blit(struct exynos_data *pdata)
{
unsigned i;
pdata->blit_params[0] = 0;
pdata->blit_params[1] = 0;
pdata->blit_params[2] = pdata->width;
pdata->blit_params[3] = pdata->height;
for (i = 0; i < pdata->num_pages; ++i)
pdata->pages[i].clear = true;
}
static int exynos_blit_frame(struct exynos_data *pdata, const void *frame,
unsigned src_pitch)
{
const enum exynos_buffer_type buf_type = defaults[EXYNOS_IMAGE_FRAME].buf_type;
const unsigned size = src_pitch * pdata->blit_params[5];
struct g2d_image *src = pdata->src[EXYNOS_IMAGE_FRAME];
if (exynos_realloc_buffer(pdata, buf_type, size) != 0)
return -1;
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_memcpy(&pdata->perf, true);
#endif
/* HACK: Without IOMMU the G2D only works properly between GEM buffers. */
memcpy_neon(pdata->buf[buf_type]->vaddr, frame, size);
src->stride = src_pitch;
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_memcpy(&pdata->perf, false);
#endif
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_g2d(&pdata->perf, true);
#endif
if (g2d_copy_with_scale(pdata->g2d, src, pdata->dst, 0, 0,
pdata->blit_params[4], pdata->blit_params[5],
pdata->blit_params[0], pdata->blit_params[1],
pdata->blit_params[2], pdata->blit_params[3], 0) ||
g2d_exec(pdata->g2d))
{
RARCH_ERR("[video_exynos]: failed to blit frame.\n");
return -1;
}
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_g2d(&pdata->perf, false);
#endif
return 0;
}
static int exynos_blend_menu(struct exynos_data *pdata,
unsigned rotation)
{
struct g2d_image *src = pdata->src[EXYNOS_IMAGE_MENU];
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_g2d(&pdata->perf, true);
#endif
if (g2d_scale_and_blend(pdata->g2d, src, pdata->dst, 0, 0,
src->width, src->height, pdata->blit_params[0],
pdata->blit_params[1], pdata->blit_params[2],
pdata->blit_params[3], G2D_OP_INTERPOLATE) ||
g2d_exec(pdata->g2d))
{
RARCH_ERR("[video_exynos]: failed to blend menu.\n");
return -1;
}
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_g2d(&pdata->perf, false);
#endif
return 0;
}
static int exynos_blend_font(struct exynos_data *pdata)
{
struct g2d_image *src = pdata->src[EXYNOS_IMAGE_FONT];
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_g2d(&pdata->perf, true);
#endif
if (g2d_scale_and_blend(pdata->g2d, src, pdata->dst, 0, 0, src->width,
src->height, 0, 0, pdata->width, pdata->height,
G2D_OP_INTERPOLATE) ||
g2d_exec(pdata->g2d))
{
RARCH_ERR("[video_exynos]: failed to blend font\n");
return -1;
}
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_g2d(&pdata->perf, false);
#endif
return 0;
}
static int exynos_flip(struct exynos_data *pdata, struct exynos_page *page)
{
/* We don't queue multiple page flips. */
if (pdata->pageflip_pending > 0)
drm_wait_flip(-1);
/* Issue a page flip at the next vblank interval. */
if (drmModePageFlip(g_drm_fd, g_crtc_id, page->buf_id,
DRM_MODE_PAGE_FLIP_EVENT, page) != 0)
{
RARCH_ERR("[video_exynos]: failed to issue page flip\n");
return -1;
}
else
{
pdata->pageflip_pending++;
}
/* On startup no frame is displayed. We therefore wait for the initial flip to finish. */
if (!pdata->cur_page)
drm_wait_flip(-1);
return 0;
}
struct exynos_video
{
struct exynos_data *data;
void *font;
const font_renderer_driver_t *font_driver;
uint16_t font_color; /* ARGB4444 */
unsigned bytes_per_pixel;
/* current dimensions of the core fb */
unsigned width;
unsigned height;
/* menu data */
unsigned menu_rotation;
bool menu_active;
bool aspect_changed;
};
static int exynos_init_font(struct exynos_video *vid)
{
struct exynos_data *pdata = vid->data;
struct g2d_image *src = pdata->src[EXYNOS_IMAGE_FONT];
const unsigned buf_height = defaults[EXYNOS_IMAGE_FONT].height;
const unsigned buf_width = align_common(pdata->aspect * (float)buf_height, 16);
const unsigned buf_bpp = defaults[EXYNOS_IMAGE_FONT].bpp;
settings_t *settings = config_get_ptr();
if (!settings->bools.video_font_enable)
return 0;
if (font_renderer_create_default(&vid->font_driver, &vid->font,
*settings->video.font_path ? settings->video.font_path : NULL,
settings->floats.video_font_size))
{
const int r = settings->floats.video_msg_color_r * 15;
const int g = settings->floats.video_msg_color_g * 15;
const int b = settings->floats.video_msg_color_b * 15;
vid->font_color = ((b < 0 ? 0 : (b > 15 ? 15 : b)) << 0) |
((g < 0 ? 0 : (g > 15 ? 15 : g)) << 4) |
((r < 0 ? 0 : (r > 15 ? 15 : r)) << 8);
}
else
{
RARCH_ERR("[video_exynos]: creating font renderer failed\n");
return -1;
}
/* The font buffer color type is ARGB4444. */
if (exynos_realloc_buffer(pdata, defaults[EXYNOS_IMAGE_FONT].buf_type,
buf_width * buf_height * buf_bpp) != 0)
{
vid->font_driver->free(vid->font);
return -1;
}
src->width = buf_width;
src->height = buf_height;
src->stride = buf_width * buf_bpp;
#if (EXYNOS_GFX_DEBUG_LOG == 1)
RARCH_LOG("[video_exynos]: using font rendering image with size %ux%u\n",
buf_width, buf_height);
#endif
return 0;
}
static int exynos_render_msg(struct exynos_video *vid,
const char *msg)
{
const struct font_atlas *atlas;
struct exynos_data *pdata = vid->data;
struct g2d_image *dst = pdata->src[EXYNOS_IMAGE_FONT];
settings_t *settings = config_get_ptr();
int msg_base_x = settings->floats.video_msg_pos_x * dst->width;
int msg_base_y = (1.0f - settings->floats.video_msg_pos_y) * dst->height;
if (!vid->font || !vid->font_driver)
return -1;
if (exynos_clear_buffer(pdata->g2d, dst) != 0)
return -1;
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 = dst->width - base_x;
const int max_height = dst->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;
exynos_put_glyph_rgba4444(pdata, src, vid->font_color,
glyph_width, glyph_height,
atlas->width, base_x, base_y);
msg_base_x += glyph->advance_x;
msg_base_y += glyph->advance_y;
}
return exynos_blend_font(pdata);
}
static void *exynos_gfx_init(const video_info_t *video,
const input_driver_t **input, void **input_data)
{
struct exynos_video *vid;
const unsigned fb_bpp = 4; /* Use XRGB8888 framebuffer. */
vid = calloc(1, sizeof(struct exynos_video));
if (!vid)
return NULL;
vid->data = calloc(1, sizeof(struct exynos_data));
if (!vid->data)
goto fail_data;
vid->bytes_per_pixel = video->rgb32 ? 4 : 2;
if (exynos_open(vid->data) != 0)
{
RARCH_ERR("[video_exynos]: opening device failed\n");
goto fail;
}
if (exynos_init(vid->data, fb_bpp) != 0)
{
RARCH_ERR("[video_exynos]: initialization failed\n");
goto fail_init;
}
if (exynos_alloc(vid->data) != 0)
{
RARCH_ERR("[video_exynos]: allocation failed\n");
goto fail_alloc;
}
if (exynos_g2d_init(vid->data) != 0)
{
RARCH_ERR("[video_exynos]: G2D initialization failed\n");
goto fail_g2d;
}
#if (EXYNOS_GFX_DEBUG_LOG == 1)
exynos_alloc_status(vid->data);
#endif
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_init(&vid->data->perf);
#endif
if (input && input_data)
*input = NULL;
if (exynos_init_font(vid) != 0)
{
RARCH_ERR("[video_exynos]: font initialization failed\n");
goto fail_font;
}
return vid;
fail_font:
exynos_g2d_free(vid->data);
fail_g2d:
exynos_free(vid->data);
fail_alloc:
exynos_deinit(vid->data);
fail_init:
exynos_close(vid->data);
fail:
free(vid->data);
fail_data:
free(vid);
return NULL;
}
static void exynos_gfx_free(void *data)
{
struct exynos_video *vid = data;
struct exynos_data *pdata;
if (!vid)
return;
pdata = vid->data;
exynos_g2d_free(pdata);
/* Flush pages: One page remains, the one being displayed at this moment. */
while (exynos_pages_used(pdata->pages, pdata->num_pages) > 1)
drm_wait_flip(-1);
exynos_free(pdata);
exynos_deinit(pdata);
exynos_close(pdata);
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_finish(&pdata->perf);
#endif
free(pdata);
if (vid->font != NULL && vid->font_driver != NULL)
vid->font_driver->free(vid->font);
free(vid);
}
static bool exynos_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)
{
struct exynos_video *vid = data;
struct exynos_page *page = NULL;
/* Check if neither menu nor core framebuffer is to be displayed. */
if (!vid->menu_active && !frame)
return true;
if (frame != NULL)
{
if (width != vid->width || height != vid->height)
{
/* Sanity check on new dimension parameters. */
if (width == 0 || height == 0)
return true;
RARCH_LOG("[video_exynos]: resolution changed by core: %ux%u -> %ux%u\n",
vid->width, vid->height, width, height);
exynos_setup_scale(vid->data, width, height, vid->bytes_per_pixel);
vid->width = width;
vid->height = height;
}
page = exynos_free_page(vid->data);
if (exynos_blit_frame(vid->data, frame, pitch) != 0)
goto fail;
}
/* If at this point the dimension parameters are still zero, setup some *
* fake blit parameters so that menu and font rendering work properly. */
if (vid->width == 0 || vid->height == 0)
exynos_set_fake_blit(vid->data);
if (!page)
page = exynos_free_page(vid->data);
if (vid->menu_active)
{
if (exynos_blend_menu(vid->data, vid->menu_rotation) != 0)
goto fail;
#ifdef HAVE_MENU
menu_driver_frame(video_info);
#endif
}
if (msg)
{
if (exynos_render_msg(vid, msg) != 0)
goto fail;
/* Font is blitted to the entire screen, so issue clear afterwards. */
page->clear = true;
}
if (exynos_flip(vid->data, page) != 0)
goto fail;
return true;
fail:
/* Since we didn't manage to issue a pageflip to this page, set *
* it to 'unused' again, and hope that it works next time. */
page->used = false;
return false;
}
static void exynos_gfx_set_nonblock_state(void *data, bool state)
{
struct exynos_video *vid = data;
if (vid && vid->data)
vid->data->sync = !state;
}
static bool exynos_gfx_alive(void *data)
{
(void)data;
return true; /* always alive */
}
static bool exynos_gfx_focus(void *data)
{
(void)data;
return true; /* drm device always has focus */
}
static bool exynos_gfx_suppress_screensaver(void *data, bool enable)
{
(void)data;
(void)enable;
return false;
}
static void exynos_gfx_set_rotation(void *data, unsigned rotation)
{
struct exynos_video *vid = (struct exynos_video*)data;
if (vid)
vid->menu_rotation = rotation;
}
static void exynos_gfx_viewport_info(void *data, struct video_viewport *vp)
{
struct exynos_video *vid = (struct exynos_video*)data;
if (!vid)
return;
vp->x = vp->y = 0;
vp->width = vp->full_width = vid->width;
vp->height = vp->full_height = vid->height;
}
static void exynos_set_aspect_ratio(void *data, unsigned aspect_ratio_idx)
{
struct exynos_video *vid = (struct exynos_video*)data;
switch (aspect_ratio_idx)
{
case ASPECT_RATIO_SQUARE:
video_driver_set_viewport_square_pixel();
break;
case ASPECT_RATIO_CORE:
video_driver_set_viewport_core();
break;
case ASPECT_RATIO_CONFIG:
video_driver_set_viewport_config();
break;
default:
break;
}
video_driver_set_aspect_ratio_value(aspectratio_lut[aspect_ratio_idx].value);
vid->aspect_changed = true;
}
static void exynos_apply_state_changes(void *data)
{
(void)data;
}
static void exynos_set_texture_frame(void *data, const void *frame, bool rgb32,
unsigned width, unsigned height, float alpha)
{
const enum exynos_buffer_type buf_type = defaults[EXYNOS_IMAGE_MENU].buf_type;
struct exynos_video *vid = data;
struct exynos_data *pdata = vid->data;
struct g2d_image *src = pdata->src[EXYNOS_IMAGE_MENU];
const unsigned size = width * height * (rgb32 ? 4 : 2);
if (exynos_realloc_buffer(pdata, buf_type, size) != 0)
return;
src->width = width;
src->height = height;
src->stride = width * (rgb32 ? 4 : 2);
src->color_mode = rgb32 ? G2D_COLOR_FMT_ARGB8888 | G2D_ORDER_RGBAX :
G2D_COLOR_FMT_ARGB4444 | G2D_ORDER_RGBAX;
src->component_alpha = (unsigned char)(255.0f * alpha);
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_memcpy(&pdata->perf, true);
#endif
memcpy_neon(pdata->buf[buf_type]->vaddr, frame, size);
#if (EXYNOS_GFX_DEBUG_PERF == 1)
exynos_perf_memcpy(&pdata->perf, false);
#endif
}
static void exynos_set_texture_enable(void *data, bool state, bool full_screen)
{
struct exynos_video *vid = data;
if (vid)
vid->menu_active = state;
}
static void exynos_set_osd_msg(void *data, const char *msg,
const struct font_params *params)
{
(void)data;
(void)msg;
(void)params;
}
static void exynos_show_mouse(void *data, bool state)
{
(void)data;
(void)state;
}
static const video_poke_interface_t exynos_poke_interface = {
NULL,
NULL,
NULL, /* set_video_mode */
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 */
exynos_set_aspect_ratio,
exynos_apply_state_changes,
#ifdef HAVE_MENU
exynos_set_texture_frame,
exynos_set_texture_enable,
#endif
exynos_set_osd_msg,
exynos_show_mouse
};
static void exynos_gfx_get_poke_interface(void *data,
const video_poke_interface_t **iface)
{
(void)data;
*iface = &exynos_poke_interface;
}
static bool exynos_gfx_set_shader(void *data,
enum rarch_shader_type type, const char *path)
{
(void)data;
(void)type;
(void)path;
return false;
}
static bool exynos_gfx_read_viewport(void *data, uint8_t *buffer, bool is_idle)
{
(void)data;
(void)buffer;
return true;
}
video_driver_t video_exynos = {
exynos_gfx_init,
exynos_gfx_frame,
exynos_gfx_set_nonblock_state,
exynos_gfx_alive,
exynos_gfx_focus,
exynos_gfx_suppress_screensaver,
NULL, /* has_windowed */
exynos_gfx_set_shader,
exynos_gfx_free,
"exynos",
NULL, /* set_viewport */
exynos_gfx_set_rotation,
exynos_gfx_viewport_info,
exynos_gfx_read_viewport,
NULL, /* read_frame_raw */
#ifdef HAVE_OVERLAY
NULL, /* overlay_interface */
#endif
exynos_gfx_get_poke_interface
};
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