mirror of
https://github.com/mpv-player/mpv
synced 2025-01-04 22:20:22 +00:00
06f1e934db
This is required so that the individual surfaces can pass beyond the dxva2 decoder and be passed to the vo. This also adds additional data to mp_image->planes[0] for IMGFMT_DXVA2, which is required for maintaining and releasing the surface even if the decoder code is uninited. The IDirectXVideoDecoder itself is encapsulated together with its surface pool and configuration in a dxva2_decoder structure whose creation and destruction is managed by talloc.
123 lines
3.8 KiB
C
123 lines
3.8 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 <assert.h>
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#include "common/av_common.h"
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#include "dxva2.h"
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#include "mp_image.h"
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#include "img_format.h"
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#include "mp_image_pool.h"
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struct dxva2_surface {
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HMODULE d3dlib;
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HMODULE dxva2lib;
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IDirectXVideoDecoder *decoder;
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LPDIRECT3DSURFACE9 surface;
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};
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LPDIRECT3DSURFACE9 d3d9_surface_in_mp_image(struct mp_image *mpi)
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{
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return mpi && mpi->imgfmt == IMGFMT_DXVA2 ?
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(LPDIRECT3DSURFACE9)mpi->planes[3] : NULL;
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}
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void dxva2_img_ref_decoder(struct mp_image *mpi, IDirectXVideoDecoder *decoder)
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{
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assert(mpi->imgfmt == IMGFMT_DXVA2);
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struct dxva2_surface *surface = (struct dxva2_surface *)mpi->planes[0];
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if (surface->decoder)
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IDirectXVideoDecoder_Release(surface->decoder);
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surface->decoder = decoder;
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IDirectXVideoDecoder_AddRef(surface->decoder);
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}
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static void dxva2_pool_release_img(void *arg)
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{
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struct dxva2_surface *surface = arg;
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if (surface->surface)
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IDirect3DSurface9_Release(surface->surface);
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if (surface->decoder)
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IDirectXVideoDecoder_Release(surface->decoder);
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if (surface->dxva2lib)
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FreeLibrary(surface->dxva2lib);
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if (surface->d3dlib)
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FreeLibrary(surface->d3dlib);
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talloc_free(surface);
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}
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struct pool_alloc_ctx {
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IDirectXVideoDecoderService *decoder_service;
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D3DFORMAT target_format;
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int surface_alignment;
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};
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static struct mp_image *dxva2_pool_alloc_img(void *arg, int fmt, int w, int h)
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{
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if (fmt != IMGFMT_DXVA2)
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return NULL;
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struct dxva2_surface *surface = talloc_zero(NULL, struct dxva2_surface);
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// Add additional references to the libraries which might otherwise be freed
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// before the surface, which is observed to lead to bad behaviour
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surface->d3dlib = LoadLibrary(L"d3d9.dll");
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surface->dxva2lib = LoadLibrary(L"dxva2.dll");
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if (!surface->d3dlib || !surface->dxva2lib)
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goto fail;
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struct pool_alloc_ctx *alloc_ctx = arg;
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HRESULT hr = IDirectXVideoDecoderService_CreateSurface(
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alloc_ctx->decoder_service,
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FFALIGN(w, alloc_ctx->surface_alignment),
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FFALIGN(h, alloc_ctx->surface_alignment),
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0, alloc_ctx->target_format, D3DPOOL_DEFAULT, 0,
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DXVA2_VideoDecoderRenderTarget,
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&surface->surface, NULL);
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if (FAILED(hr))
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goto fail;
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struct mp_image mpi = {0};
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mp_image_setfmt(&mpi, IMGFMT_DXVA2);
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mp_image_set_size(&mpi, w, h);
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mpi.planes[0] = (void *)surface;
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mpi.planes[3] = (void *)surface->surface;
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return mp_image_new_custom_ref(&mpi, surface, dxva2_pool_release_img);
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fail:
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dxva2_pool_release_img(surface);
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return NULL;
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}
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void dxva2_pool_set_allocator(struct mp_image_pool *pool,
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IDirectXVideoDecoderService *decoder_service,
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D3DFORMAT target_format, int surface_alignment)
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{
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struct pool_alloc_ctx *alloc_ctx = talloc_ptrtype(pool, alloc_ctx);
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*alloc_ctx = (struct pool_alloc_ctx){
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decoder_service = decoder_service,
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target_format = target_format,
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surface_alignment = surface_alignment
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};
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mp_image_pool_set_allocator(pool, dxva2_pool_alloc_img, alloc_ctx);
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mp_image_pool_set_lru(pool);
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}
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