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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 <errno.h>
#include <unistd.h>
#include "config.h"
#include "dmabuf_interop.h"
#include "video/out/placebo/ra_pl.h"
#include "video/out/placebo/utils.h"
static bool vaapi_pl_map(struct ra_hwdec_mapper *mapper,
struct dmabuf_interop *dmabuf_interop,
bool probing)
{
struct dmabuf_interop_priv *p = mapper->priv;
pl_gpu gpu = ra_pl_get(mapper->ra);
struct ra_imgfmt_desc desc = {0};
if (!ra_get_imgfmt_desc(mapper->ra, mapper->dst_params.imgfmt, &desc))
return false;
// The calling code validates that the total number of exported planes
// equals the number we expected in p->num_planes.
int layer = 0;
int layer_plane = 0;
for (int n = 0; n < p->num_planes; n++) {
const struct ra_format *format = desc.planes[n];
int id = p->desc.layers[layer].planes[layer_plane].object_index;
int fd = p->desc.objects[id].fd;
uint32_t size = p->desc.objects[id].size;
uint32_t offset = p->desc.layers[layer].planes[layer_plane].offset;
uint32_t pitch = p->desc.layers[layer].planes[layer_plane].pitch;
// AMD drivers do not return the size in the surface description, so we
// need to query it manually.
if (size == 0) {
size = lseek(fd, 0, SEEK_END);
if (size == -1) {
MP_ERR(mapper, "Cannot obtain size of object with fd %d: %s\n",
fd, mp_strerror(errno));
return false;
}
off_t err = lseek(fd, 0, SEEK_SET);
if (err == -1) {
MP_ERR(mapper, "Failed to reset offset for fd %d: %s\n",
fd, mp_strerror(errno));
return false;
}
}
struct pl_tex_params tex_params = {
.w = mp_image_plane_w(&p->layout, n),
.h = mp_image_plane_h(&p->layout, n),
.d = 0,
.format = format->priv,
.sampleable = true,
.import_handle = PL_HANDLE_DMA_BUF,
.shared_mem = (struct pl_shared_mem) {
.handle = {
.fd = fd,
},
.size = size,
.offset = offset,
.drm_format_mod = p->desc.objects[id].format_modifier,
.stride_w = pitch,
},
};
mppl_log_set_probing(gpu->log, probing);
pl_tex pltex = pl_tex_create(gpu, &tex_params);
mppl_log_set_probing(gpu->log, false);
if (!pltex)
return false;
struct ra_tex *ratex = talloc_ptrtype(NULL, ratex);
int ret = mppl_wrap_tex(mapper->ra, pltex, ratex);
if (!ret) {
pl_tex_destroy(gpu, &pltex);
talloc_free(ratex);
return false;
}
mapper->tex[n] = ratex;
MP_TRACE(mapper, "Object %d with fd %d imported as %p\n",
id, fd, ratex);
layer_plane++;
if (layer_plane == p->desc.layers[layer].nb_planes) {
layer_plane = 0;
layer++;
}
}
return true;
}
static void vaapi_pl_unmap(struct ra_hwdec_mapper *mapper)
{
for (int n = 0; n < 4; n++)
ra_tex_free(mapper->ra, &mapper->tex[n]);
}
bool dmabuf_interop_pl_init(const struct ra_hwdec *hw,
struct dmabuf_interop *dmabuf_interop)
{
pl_gpu gpu = ra_pl_get(hw->ra);
if (!gpu) {
// This is not a libplacebo RA;
return false;
}
if (!(gpu->import_caps.tex & PL_HANDLE_DMA_BUF)) {
MP_VERBOSE(hw, "libplacebo dmabuf interop requires support for "
"PL_HANDLE_DMA_BUF import.\n");
return false;
}
MP_VERBOSE(hw, "using libplacebo dmabuf interop\n");
dmabuf_interop->interop_map = vaapi_pl_map;
dmabuf_interop->interop_unmap = vaapi_pl_unmap;
return true;
}
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