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mpv/video/out/gl_hwdec_vaglx.c

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/*
* This file is part of mpv.
*
* Parts based on the MPlayer VA-API patch (see vo_vaapi.c).
*
* mpv 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 Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stddef.h>
#include <string.h>
#include <assert.h>
#include <GL/glx.h>
#include "x11_common.h"
#include "gl_hwdec.h"
#include "video/vaapi.h"
struct priv {
struct mp_log *log;
struct mp_vaapi_ctx *ctx;
VADisplay *display;
Display *xdisplay;
GLuint gl_texture;
GLXFBConfig fbc;
Pixmap pixmap;
GLXPixmap glxpixmap;
void (*glXBindTexImage)(Display *dpy, GLXDrawable draw, int buffer, int *a);
void (*glXReleaseTexImage)(Display *dpy, GLXDrawable draw, int buffer);
};
static void destroy_texture(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
if (p->glxpixmap) {
p->glXReleaseTexImage(p->xdisplay, p->glxpixmap, GLX_FRONT_EXT);
glXDestroyPixmap(p->xdisplay, p->glxpixmap);
}
p->glxpixmap = 0;
if (p->pixmap)
XFreePixmap(p->xdisplay, p->pixmap);
p->pixmap = 0;
gl->DeleteTextures(1, &p->gl_texture);
p->gl_texture = 0;
}
static void destroy(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
destroy_texture(hw);
va_destroy(p->ctx);
}
static int create(struct gl_hwdec *hw)
{
if (hw->hwctx)
return -1;
Display *x11disp = glXGetCurrentDisplay();
if (!x11disp)
return -1;
int x11scr = DefaultScreen(x11disp);
struct priv *p = talloc_zero(hw, struct priv);
hw->priv = p;
p->log = hw->log;
p->xdisplay = x11disp;
const char *glxext = glXQueryExtensionsString(x11disp, x11scr);
if (!glxext || !strstr(glxext, "GLX_EXT_texture_from_pixmap"))
return -1;
p->glXBindTexImage =
(void*)glXGetProcAddressARB((void*)"glXBindTexImageEXT");
p->glXReleaseTexImage =
(void*)glXGetProcAddressARB((void*)"glXReleaseTexImageEXT");
if (!p->glXBindTexImage || !p->glXReleaseTexImage)
return -1;
p->display = vaGetDisplay(x11disp);
if (!p->display)
return -1;
p->ctx = va_initialize(p->display, p->log, true);
if (!p->ctx) {
vaTerminate(p->display);
return -1;
}
if (hw->reject_emulated && va_guess_if_emulated(p->ctx)) {
destroy(hw);
return -1;
}
int attribs[] = {
GLX_BIND_TO_TEXTURE_RGBA_EXT, True,
GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT,
GLX_Y_INVERTED_EXT, True,
GLX_DOUBLEBUFFER, False,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
GLX_ALPHA_SIZE, 0,
None
};
int fbcount;
GLXFBConfig *fbc = glXChooseFBConfig(x11disp, x11scr, attribs, &fbcount);
if (fbcount)
p->fbc = fbc[0];
if (fbc)
XFree(fbc);
if (!fbcount) {
MP_VERBOSE(p, "No texture-from-pixmap support.\n");
destroy(hw);
return -1;
}
hw->hwctx = &p->ctx->hwctx;
hw->converted_imgfmt = IMGFMT_RGB0;
return 0;
}
static int reinit(struct gl_hwdec *hw, struct mp_image_params *params)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
destroy_texture(hw);
params->imgfmt = hw->driver->imgfmt;
gl->GenTextures(1, &p->gl_texture);
gl->BindTexture(GL_TEXTURE_2D, p->gl_texture);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
gl->BindTexture(GL_TEXTURE_2D, 0);
p->pixmap = XCreatePixmap(p->xdisplay,
RootWindow(p->xdisplay, DefaultScreen(p->xdisplay)),
params->w, params->h, 24);
if (!p->pixmap) {
MP_FATAL(hw, "could not create pixmap\n");
return -1;
}
int attribs[] = {
GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGB_EXT,
GLX_MIPMAP_TEXTURE_EXT, False,
None,
};
p->glxpixmap = glXCreatePixmap(p->xdisplay, p->fbc, p->pixmap, attribs);
gl->BindTexture(GL_TEXTURE_2D, p->gl_texture);
p->glXBindTexImage(p->xdisplay, p->glxpixmap, GLX_FRONT_EXT, NULL);
gl->BindTexture(GL_TEXTURE_2D, 0);
return 0;
}
static int map_image(struct gl_hwdec *hw, struct mp_image *hw_image,
GLuint *out_textures)
{
struct priv *p = hw->priv;
VAStatus status;
if (!p->pixmap)
return -1;
va_lock(p->ctx);
status = vaPutSurface(p->display, va_surface_id(hw_image), p->pixmap,
0, 0, hw_image->w, hw_image->h,
0, 0, hw_image->w, hw_image->h,
NULL, 0,
va_get_colorspace_flag(hw_image->params.colorspace));
CHECK_VA_STATUS(p, "vaPutSurface()");
va_unlock(p->ctx);
out_textures[0] = p->gl_texture;
return 0;
}
const struct gl_hwdec_driver gl_hwdec_vaglx = {
.api_name = "vaapi",
.imgfmt = IMGFMT_VAAPI,
.create = create,
.reinit = reinit,
.map_image = map_image,
.destroy = destroy,
};