mirror of
https://github.com/mpv-player/mpv
synced 2024-12-21 06:14:32 +00:00
2d58fb3b8e
VA-API's OpenGL/GLX interop is pretty bad and perhaps slow (renders a X11 pixmap into a FBO, and has to go over X11, probably involves one or more copies), and this code serves more as an example, rather than for serious use. On the other hand, this might be work much better than vo_vaapi, even if slightly slower.
141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/*
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* This file is part of mpv.
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*
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* Parts based on the MPlayer VA-API patch (see vo_vaapi.c).
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*
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* mpv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stddef.h>
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#include <assert.h>
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#include <GL/glx.h>
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#include <va/va_glx.h>
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#include "x11_common.h"
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#include "gl_common.h"
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#include "video/vaapi.h"
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#include "video/decode/dec_video.h"
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struct priv {
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struct mp_vaapi_ctx *ctx;
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VADisplay *display;
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GLuint gl_texture;
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void *vaglx_surface;
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};
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static bool query_format(int imgfmt)
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{
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return imgfmt == IMGFMT_VAAPI;
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}
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static void destroy_texture(struct gl_hwdec *hw)
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{
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struct priv *p = hw->priv;
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VAStatus status;
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if (p->vaglx_surface) {
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status = vaDestroySurfaceGLX(p->display, p->vaglx_surface);
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check_va_status(status, "vaDestroySurfaceGLX()");
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p->vaglx_surface = NULL;
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}
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glDeleteTextures(1, &p->gl_texture);
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p->gl_texture = 0;
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}
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static void destroy(struct gl_hwdec *hw)
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{
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struct priv *p = hw->priv;
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destroy_texture(hw);
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va_destroy(p->ctx);
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}
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static int create(struct gl_hwdec *hw)
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{
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if (hw->info->vaapi_ctx)
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return -1;
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if (!hw->mpgl->vo->x11 || !glXGetCurrentContext())
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return -1;
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struct priv *p = talloc_zero(hw, struct priv);
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hw->priv = p;
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p->display = vaGetDisplayGLX(hw->mpgl->vo->x11->display);
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if (!p->display)
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return -1;
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p->ctx = va_initialize(p->display);
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if (!p->ctx) {
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vaTerminate(p->display);
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return -1;
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}
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hw->info->vaapi_ctx = p->ctx;
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hw->converted_imgfmt = IMGFMT_RGBA;
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return 0;
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}
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static int reinit(struct gl_hwdec *hw, int w, int h)
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{
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struct priv *p = hw->priv;
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GL *gl = hw->mpgl->gl;
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VAStatus status;
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destroy_texture(hw);
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gl->GenTextures(1, &p->gl_texture);
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gl->BindTexture(GL_TEXTURE_2D, p->gl_texture);
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gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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gl->TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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gl->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0,
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GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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gl->BindTexture(GL_TEXTURE_2D, 0);
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status = vaCreateSurfaceGLX(p->display, GL_TEXTURE_2D,
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p->gl_texture, &p->vaglx_surface);
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return check_va_status(status, "vaCreateSurfaceGLX()") ? 0 : -1;
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}
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static int load_image(struct gl_hwdec *hw, struct mp_image *hw_image,
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GLuint *out_textures)
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{
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struct priv *p = hw->priv;
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VAStatus status;
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if (!p->vaglx_surface)
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return -1;
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status = vaCopySurfaceGLX(p->display, p->vaglx_surface,
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va_surface_id_in_mp_image(hw_image),
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va_get_colorspace_flag(hw_image->colorspace));
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if (!check_va_status(status, "vaCopySurfaceGLX()"))
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return -1;
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out_textures[0] = p->gl_texture;
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return 0;
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}
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static void unload_image(struct gl_hwdec *hw)
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{
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}
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const struct gl_hwdec_driver gl_hwdec_vaglx = {
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.api_name = "vaapi",
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.query_format = query_format,
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.create = create,
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.reinit = reinit,
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.load_image = load_image,
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.unload_image = unload_image,
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.destroy = destroy,
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};
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