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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stddef.h>
#include <assert.h>
#include <GL/glx.h>
#include "hwdec.h"
#include "utils.h"
#include "video/vdpau.h"
#include "video/vdpau_mixer.h"
// This is a GL_NV_vdpau_interop specification bug, and headers (unfortunately)
// follow it. I'm not sure about the original nvidia headers.
#define BRAINDEATH(x) ((void *)(uintptr_t)(x))
static int reinit(struct gl_hwdec *hw, struct mp_image_params *params);
struct priv {
struct mp_log *log;
struct mp_vdpau_ctx *ctx;
uint64_t preemption_counter;
struct mp_image_params image_params;
GLuint gl_texture;
bool vdpgl_initialized;
GLvdpauSurfaceNV vdpgl_surface;
VdpOutputSurface vdp_surface;
struct mp_vdpau_mixer *mixer;
bool mapped;
};
static void mark_vdpau_objects_uninitialized(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
p->vdp_surface = VDP_INVALID_HANDLE;
p->mapped = false;
}
static void destroy_objects(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
struct vdp_functions *vdp = &p->ctx->vdp;
VdpStatus vdp_st;
if (p->mapped)
gl->VDPAUUnmapSurfacesNV(1, &p->vdpgl_surface);
p->mapped = false;
if (p->vdpgl_surface)
gl->VDPAUUnregisterSurfaceNV(p->vdpgl_surface);
p->vdpgl_surface = 0;
glDeleteTextures(1, &p->gl_texture);
p->gl_texture = 0;
if (p->vdp_surface != VDP_INVALID_HANDLE) {
vdp_st = vdp->output_surface_destroy(p->vdp_surface);
CHECK_VDP_WARNING(p, "Error when calling vdp_output_surface_destroy");
}
p->vdp_surface = VDP_INVALID_HANDLE;
glCheckError(gl, hw->log, "Before uninitializing OpenGL interop");
if (p->vdpgl_initialized)
gl->VDPAUFiniNV();
p->vdpgl_initialized = false;
glCheckError(gl, hw->log, "After uninitializing OpenGL interop");
}
static void destroy(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
destroy_objects(hw);
mp_vdpau_mixer_destroy(p->mixer);
if (p->ctx)
hwdec_devices_remove(hw->devs, &p->ctx->hwctx);
mp_vdpau_destroy(p->ctx);
}
static int create(struct gl_hwdec *hw)
{
GL *gl = hw->gl;
Display *x11disp = glXGetCurrentDisplay();
if (!x11disp)
return -1;
if (!(gl->mpgl_caps & MPGL_CAP_VDPAU))
return -1;
struct priv *p = talloc_zero(hw, struct priv);
hw->priv = p;
p->log = hw->log;
p->ctx = mp_vdpau_create_device_x11(hw->log, x11disp, true);
if (!p->ctx)
return -1;
if (mp_vdpau_handle_preemption(p->ctx, &p->preemption_counter) < 1)
return -1;
p->vdp_surface = VDP_INVALID_HANDLE;
p->mixer = mp_vdpau_mixer_create(p->ctx, hw->log);
if (hw->probing && mp_vdpau_guess_if_emulated(p->ctx)) {
destroy(hw);
return -1;
}
p->ctx->hwctx.driver_name = hw->driver->name;
hwdec_devices_add(hw->devs, &p->ctx->hwctx);
return 0;
}
static int reinit(struct gl_hwdec *hw, struct mp_image_params *params)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
struct vdp_functions *vdp = &p->ctx->vdp;
VdpStatus vdp_st;
destroy_objects(hw);
assert(params->imgfmt == hw->driver->imgfmt);
p->image_params = *params;
if (mp_vdpau_handle_preemption(p->ctx, &p->preemption_counter) < 0)
return -1;
gl->VDPAUInitNV(BRAINDEATH(p->ctx->vdp_device), p->ctx->get_proc_address);
p->vdpgl_initialized = true;
vdp_st = vdp->output_surface_create(p->ctx->vdp_device,
VDP_RGBA_FORMAT_B8G8R8A8,
params->w, params->h, &p->vdp_surface);
CHECK_VDP_ERROR(p, "Error when calling vdp_output_surface_create");
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->vdpgl_surface = gl->VDPAURegisterOutputSurfaceNV(BRAINDEATH(p->vdp_surface),
GL_TEXTURE_2D,
1, &p->gl_texture);
if (!p->vdpgl_surface)
return -1;
gl->VDPAUSurfaceAccessNV(p->vdpgl_surface, GL_READ_ONLY);
glCheckError(gl, hw->log, "After initializing vdpau OpenGL interop");
params->imgfmt = IMGFMT_RGB0;
return 0;
}
static int map_frame(struct gl_hwdec *hw, struct mp_image *hw_image,
struct gl_hwdec_frame *out_frame)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
int pe = mp_vdpau_handle_preemption(p->ctx, &p->preemption_counter);
if (pe < 1) {
mark_vdpau_objects_uninitialized(hw);
if (pe < 0)
return -1;
if (reinit(hw, &p->image_params) < 0)
return -1;
}
if (!p->vdpgl_surface)
return -1;
mp_vdpau_mixer_render(p->mixer, NULL, p->vdp_surface, NULL, hw_image, NULL);
gl->VDPAUMapSurfacesNV(1, &p->vdpgl_surface);
p->mapped = true;
*out_frame = (struct gl_hwdec_frame){
.planes = {
{
.gl_texture = p->gl_texture,
.gl_target = GL_TEXTURE_2D,
.tex_w = p->image_params.w,
.tex_h = p->image_params.h,
},
},
};
return 0;
}
static void unmap(struct gl_hwdec *hw)
{
struct priv *p = hw->priv;
GL *gl = hw->gl;
if (p->mapped)
gl->VDPAUUnmapSurfacesNV(1, &p->vdpgl_surface);
p->mapped = false;
}
const struct gl_hwdec_driver gl_hwdec_vdpau = {
.name = "vdpau-glx",
.api = HWDEC_VDPAU,
.imgfmt = IMGFMT_VDPAU,
.create = create,
.reinit = reinit,
.map_frame = map_frame,
.unmap = unmap,
.destroy = destroy,
};
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