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/*
* Copyright (c) 2019 Philip Langdale <philipl@overt.org>
*
* 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 "hwdec_cuda.h"
#include "options/m_config.h"
#include "options/options.h"
#include "video/out/opengl/formats.h"
#include "video/out/opengl/ra_gl.h"
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_cuda.h>
#include <unistd.h>
#define CHECK_CU(x) check_cu((mapper)->owner, (x), #x)
struct ext_gl {
CUgraphicsResource cu_res;
};
static bool cuda_ext_gl_init(struct ra_hwdec_mapper *mapper,
const struct ra_format *format, int n)
{
struct cuda_hw_priv *p_owner = mapper->owner->priv;
struct cuda_mapper_priv *p = mapper->priv;
CudaFunctions *cu = p_owner->cu;
int ret = 0;
CUcontext dummy;
struct ext_gl *egl = talloc_ptrtype(NULL, egl);
p->ext[n] = egl;
struct ra_tex_params params = {
.dimensions = 2,
.w = mp_image_plane_w(&p->layout, n),
.h = mp_image_plane_h(&p->layout, n),
.d = 1,
.format = format,
.render_src = true,
.src_linear = format->linear_filter,
};
mapper->tex[n] = ra_tex_create(mapper->ra, ¶ms);
if (!mapper->tex[n]) {
goto error;
}
GLuint texture;
GLenum target;
ra_gl_get_raw_tex(mapper->ra, mapper->tex[n], &texture, &target);
ret = CHECK_CU(cu->cuGraphicsGLRegisterImage(&egl->cu_res, texture, target,
CU_GRAPHICS_REGISTER_FLAGS_WRITE_DISCARD));
if (ret < 0)
goto error;
ret = CHECK_CU(cu->cuGraphicsMapResources(1, &egl->cu_res, 0));
if (ret < 0)
goto error;
ret = CHECK_CU(cu->cuGraphicsSubResourceGetMappedArray(&p->cu_array[n], egl->cu_res,
0, 0));
if (ret < 0)
goto error;
ret = CHECK_CU(cu->cuGraphicsUnmapResources(1, &egl->cu_res, 0));
if (ret < 0)
goto error;
return true;
error:
CHECK_CU(cu->cuCtxPopCurrent(&dummy));
return false;
}
static void cuda_ext_gl_uninit(const struct ra_hwdec_mapper *mapper, int n)
{
struct cuda_hw_priv *p_owner = mapper->owner->priv;
struct cuda_mapper_priv *p = mapper->priv;
CudaFunctions *cu = p_owner->cu;
struct ext_gl *egl = p->ext[n];
if (egl && egl->cu_res) {
CHECK_CU(cu->cuGraphicsUnregisterResource(egl->cu_res));
egl->cu_res = 0;
}
talloc_free(egl);
}
#undef CHECK_CU
#define CHECK_CU(x) check_cu(hw, (x), #x)
bool cuda_gl_init(const struct ra_hwdec *hw) {
int ret = 0;
struct cuda_hw_priv *p = hw->priv;
CudaFunctions *cu = p->cu;
if (ra_is_gl(hw->ra_ctx->ra)) {
GL *gl = ra_gl_get(hw->ra_ctx->ra);
if (gl->version < 210 && gl->es < 300) {
MP_VERBOSE(hw, "need OpenGL >= 2.1 or OpenGL-ES >= 3.0\n");
return false;
}
} else {
// This is not an OpenGL RA.
return false;
}
CUdevice display_dev;
unsigned int device_count;
ret = CHECK_CU(cu->cuGLGetDevices(&device_count, &display_dev, 1,
CU_GL_DEVICE_LIST_ALL));
if (ret < 0)
return false;
ret = CHECK_CU(cu->cuCtxCreate(&p->display_ctx, CU_CTX_SCHED_BLOCKING_SYNC,
display_dev));
if (ret < 0)
return false;
p->decode_ctx = p->display_ctx;
struct cuda_opts *opts = mp_get_config_group(NULL, hw->global, &cuda_conf);
int decode_dev_idx = opts->cuda_device;
talloc_free(opts);
if (decode_dev_idx > -1) {
CUcontext dummy;
CUdevice decode_dev;
ret = CHECK_CU(cu->cuDeviceGet(&decode_dev, decode_dev_idx));
if (ret < 0) {
CHECK_CU(cu->cuCtxPopCurrent(&dummy));
return false;
}
if (decode_dev != display_dev) {
MP_INFO(hw, "Using separate decoder and display devices\n");
// Pop the display context. We won't use it again during init()
ret = CHECK_CU(cu->cuCtxPopCurrent(&dummy));
if (ret < 0)
return false;
ret = CHECK_CU(cu->cuCtxCreate(&p->decode_ctx, CU_CTX_SCHED_BLOCKING_SYNC,
decode_dev));
if (ret < 0)
return false;
}
}
// We don't have a way to do a GPU sync after copying
p->do_full_sync = true;
p->ext_init = cuda_ext_gl_init;
p->ext_uninit = cuda_ext_gl_uninit;
return true;
}
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