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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 <assert.h>
#include "common/av_common.h"
#include "dxva2.h"
#include "mp_image.h"
#include "img_format.h"
#include "mp_image_pool.h"
struct dxva2_surface {
HMODULE d3dlib;
HMODULE dxva2lib;
IDirectXVideoDecoder *decoder;
LPDIRECT3DSURFACE9 surface;
};
LPDIRECT3DSURFACE9 d3d9_surface_in_mp_image(struct mp_image *mpi)
{
return mpi && mpi->imgfmt == IMGFMT_DXVA2 ?
(LPDIRECT3DSURFACE9)mpi->planes[3] : NULL;
}
void dxva2_img_ref_decoder(struct mp_image *mpi, IDirectXVideoDecoder *decoder)
{
assert(mpi->imgfmt == IMGFMT_DXVA2);
struct dxva2_surface *surface = (struct dxva2_surface *)mpi->planes[0];
if (surface->decoder)
IDirectXVideoDecoder_Release(surface->decoder);
surface->decoder = decoder;
IDirectXVideoDecoder_AddRef(surface->decoder);
}
static void dxva2_pool_release_img(void *arg)
{
struct dxva2_surface *surface = arg;
if (surface->surface)
IDirect3DSurface9_Release(surface->surface);
if (surface->decoder)
IDirectXVideoDecoder_Release(surface->decoder);
if (surface->dxva2lib)
FreeLibrary(surface->dxva2lib);
if (surface->d3dlib)
FreeLibrary(surface->d3dlib);
talloc_free(surface);
}
struct pool_alloc_ctx {
IDirectXVideoDecoderService *decoder_service;
D3DFORMAT target_format;
int surface_alignment;
};
static struct mp_image *dxva2_pool_alloc_img(void *arg, int fmt, int w, int h)
{
if (fmt != IMGFMT_DXVA2)
return NULL;
struct dxva2_surface *surface = talloc_zero(NULL, struct dxva2_surface);
// Add additional references to the libraries which might otherwise be freed
// before the surface, which is observed to lead to bad behaviour
surface->d3dlib = LoadLibrary(L"d3d9.dll");
surface->dxva2lib = LoadLibrary(L"dxva2.dll");
if (!surface->d3dlib || !surface->dxva2lib)
goto fail;
struct pool_alloc_ctx *alloc_ctx = arg;
HRESULT hr = IDirectXVideoDecoderService_CreateSurface(
alloc_ctx->decoder_service,
FFALIGN(w, alloc_ctx->surface_alignment),
FFALIGN(h, alloc_ctx->surface_alignment),
0, alloc_ctx->target_format, D3DPOOL_DEFAULT, 0,
DXVA2_VideoDecoderRenderTarget,
&surface->surface, NULL);
if (FAILED(hr))
goto fail;
struct mp_image mpi = {0};
mp_image_setfmt(&mpi, IMGFMT_DXVA2);
mp_image_set_size(&mpi, w, h);
mpi.planes[0] = (void *)surface;
mpi.planes[3] = (void *)surface->surface;
return mp_image_new_custom_ref(&mpi, surface, dxva2_pool_release_img);
fail:
dxva2_pool_release_img(surface);
return NULL;
}
void dxva2_pool_set_allocator(struct mp_image_pool *pool,
IDirectXVideoDecoderService *decoder_service,
D3DFORMAT target_format, int surface_alignment)
{
struct pool_alloc_ctx *alloc_ctx = talloc_ptrtype(pool, alloc_ctx);
*alloc_ctx = (struct pool_alloc_ctx){
decoder_service = decoder_service,
target_format = target_format,
surface_alignment = surface_alignment
};
mp_image_pool_set_allocator(pool, dxva2_pool_alloc_img, alloc_ctx);
mp_image_pool_set_lru(pool);
}
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