mirror of https://github.com/mpv-player/mpv
205 lines
5.8 KiB
C
205 lines
5.8 KiB
C
/*
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* This file is part of mpv.
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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 "gl_hwdec.h"
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#include "video/vdpau.h"
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#include "video/vdpau_mixer.h"
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// This is a GL_NV_vdpau_interop specification bug, and headers (unfortunately)
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// follow it. I'm not sure about the original nvidia headers.
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#define BRAINDEATH(x) ((void *)(uintptr_t)(x))
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static int reinit(struct gl_hwdec *hw, const struct mp_image_params *params);
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struct priv {
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struct mp_log *log;
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struct mp_vdpau_ctx *ctx;
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uint64_t preemption_counter;
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struct mp_image_params image_params;
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GLuint gl_texture;
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GLvdpauSurfaceNV vdpgl_surface;
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VdpOutputSurface vdp_surface;
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struct mp_vdpau_mixer *mixer;
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};
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static void mark_vdpau_objects_uninitialized(struct gl_hwdec *hw)
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{
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struct priv *p = hw->priv;
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p->vdp_surface = VDP_INVALID_HANDLE;
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p->mixer->video_mixer = VDP_INVALID_HANDLE;
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}
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static void destroy_objects(struct gl_hwdec *hw)
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{
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struct priv *p = hw->priv;
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GL *gl = hw->gl;
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struct vdp_functions *vdp = &p->ctx->vdp;
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VdpStatus vdp_st;
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if (p->vdpgl_surface)
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gl->VDPAUUnregisterSurfaceNV(p->vdpgl_surface);
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p->vdpgl_surface = 0;
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glDeleteTextures(1, &p->gl_texture);
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p->gl_texture = 0;
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if (p->vdp_surface != VDP_INVALID_HANDLE) {
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vdp_st = vdp->output_surface_destroy(p->vdp_surface);
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CHECK_VDP_WARNING(p, "Error when calling vdp_output_surface_destroy");
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}
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p->vdp_surface = VDP_INVALID_HANDLE;
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glCheckError(gl, hw->log, "Before uninitializing OpenGL interop");
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gl->VDPAUFiniNV();
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// If the GL/vdpau state is not initialized, above calls raises an error.
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while (1) {
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if (gl->GetError() == GL_NO_ERROR)
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break;
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}
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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_objects(hw);
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mp_vdpau_mixer_destroy(p->mixer);
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mp_vdpau_destroy(p->ctx);
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hw->info->vdpau_ctx = NULL;
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}
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static int create(struct gl_hwdec *hw)
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{
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GL *gl = hw->gl;
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if (hw->info->vdpau_ctx)
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return -1;
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Display *x11disp = glXGetCurrentDisplay();
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if (!x11disp)
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return -1;
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if (!(gl->mpgl_caps & MPGL_CAP_VDPAU))
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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->log = hw->log;
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p->ctx = mp_vdpau_create_device_x11(hw->log, x11disp);
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if (!p->ctx)
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return -1;
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if (mp_vdpau_handle_preemption(p->ctx, &p->preemption_counter) < 1)
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return -1;
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p->vdp_surface = VDP_INVALID_HANDLE;
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p->mixer = mp_vdpau_mixer_create(p->ctx, hw->log);
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hw->info->vdpau_ctx = p->ctx;
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hw->converted_imgfmt = IMGFMT_RGB0;
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return 0;
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}
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static int reinit(struct gl_hwdec *hw, const struct mp_image_params *params)
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{
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struct priv *p = hw->priv;
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GL *gl = hw->gl;
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struct vdp_functions *vdp = &p->ctx->vdp;
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VdpStatus vdp_st;
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destroy_objects(hw);
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p->image_params = *params;
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if (mp_vdpau_handle_preemption(p->ctx, &p->preemption_counter) < 1)
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return -1;
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gl->VDPAUInitNV(BRAINDEATH(p->ctx->vdp_device), p->ctx->get_proc_address);
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vdp_st = vdp->output_surface_create(p->ctx->vdp_device,
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VDP_RGBA_FORMAT_B8G8R8A8,
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params->w, params->h, &p->vdp_surface);
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CHECK_VDP_ERROR(p, "Error when calling vdp_output_surface_create");
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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->BindTexture(GL_TEXTURE_2D, 0);
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p->vdpgl_surface = gl->VDPAURegisterOutputSurfaceNV(BRAINDEATH(p->vdp_surface),
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GL_TEXTURE_2D,
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1, &p->gl_texture);
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if (!p->vdpgl_surface)
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return -1;
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gl->VDPAUSurfaceAccessNV(p->vdpgl_surface, GL_READ_ONLY);
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glCheckError(gl, hw->log, "After initializing vdpau OpenGL interop");
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return 0;
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}
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static int map_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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GL *gl = hw->gl;
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assert(hw_image && hw_image->imgfmt == IMGFMT_VDPAU);
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int pe = mp_vdpau_handle_preemption(p->ctx, &p->preemption_counter);
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if (pe < 1) {
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mark_vdpau_objects_uninitialized(hw);
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if (pe < 0)
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return -1;
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if (reinit(hw, &p->image_params) < 0)
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return -1;
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}
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if (!p->vdpgl_surface)
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return -1;
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mp_vdpau_mixer_render(p->mixer, NULL, p->vdp_surface, NULL, hw_image, NULL);
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gl->VDPAUMapSurfacesNV(1, &p->vdpgl_surface);
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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 unmap_image(struct gl_hwdec *hw)
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{
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struct priv *p = hw->priv;
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GL *gl = hw->gl;
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gl->VDPAUUnmapSurfacesNV(1, &p->vdpgl_surface);
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}
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const struct gl_hwdec_driver gl_hwdec_vdpau = {
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.api_name = "vdpau",
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.imgfmt = IMGFMT_VDPAU,
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.create = create,
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.reinit = reinit,
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.map_image = map_image,
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.unmap_image = unmap_image,
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.destroy = destroy,
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};
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