diff options
| -rw-r--r-- | video/decode/d3d.c | 81 | ||||
| -rw-r--r-- | video/decode/d3d.h | 4 | ||||
| -rw-r--r-- | video/out/opengl/hwdec_d3d11egl.c | 1 |
3 files changed, 86 insertions, 0 deletions
diff --git a/video/decode/d3d.c b/video/decode/d3d.c index 5c65da469f..b50f3a0288 100644 --- a/video/decode/d3d.c +++ b/video/decode/d3d.c @@ -24,6 +24,7 @@ #include "common/av_common.h" #include "video/fmt-conversion.h" #include "video/mp_image.h" +#include "video/mp_image_pool.h" #include "osdep/windows_utils.h" #include "d3d.h" @@ -278,3 +279,83 @@ bool d3d11_check_decoding(ID3D11Device *dev) hr = ID3D11Device_CheckFormatSupport(dev, DXGI_FORMAT_NV12, &supported); return !FAILED(hr) && (supported & D3D11_BIND_DECODER); } + +static int get_dxgi_mpfmt(DWORD dxgi_fmt) +{ + switch (dxgi_fmt) { + case DXGI_FORMAT_NV12: return IMGFMT_NV12; + case DXGI_FORMAT_P010: return IMGFMT_P010; + case DXGI_FORMAT_P016: return IMGFMT_P010; + } + return 0; +} + +struct mp_image *d3d11_download_image(struct mp_hwdec_ctx *ctx, + struct mp_image *mpi, + struct mp_image_pool *swpool) +{ + HRESULT hr; + ID3D11Device *device = ctx->ctx; + + if (mpi->imgfmt != IMGFMT_D3D11VA && mpi->imgfmt != IMGFMT_D3D11NV12) + return NULL; + + ID3D11Texture2D *texture = (void *)mpi->planes[1]; + int subindex = (intptr_t)mpi->planes[2]; + if (!texture) + return NULL; + + D3D11_TEXTURE2D_DESC tex_desc; + ID3D11Texture2D_GetDesc(texture, &tex_desc); + int mpfmt = get_dxgi_mpfmt(tex_desc.Format); + if (!mpfmt) + return NULL; + + // create staging texture shared with the CPU with mostly the same + // parameters as the source texture + tex_desc.MipLevels = 1; + tex_desc.MiscFlags = 0; + tex_desc.ArraySize = 1; + tex_desc.Usage = D3D11_USAGE_STAGING; + tex_desc.CPUAccessFlags = D3D11_CPU_ACCESS_READ; + tex_desc.BindFlags = 0; + ID3D11Texture2D *staging = NULL; + hr = ID3D11Device_CreateTexture2D(device, &tex_desc, NULL, &staging); + if (FAILED(hr)) + return NULL; + + bool ok = false; + struct mp_image *sw_img = NULL; + ID3D11DeviceContext *device_ctx = NULL; + ID3D11Device_GetImmediateContext(device, &device_ctx); + + // copy to the staging texture + ID3D11DeviceContext_CopySubresourceRegion( + device_ctx, + (ID3D11Resource *)staging, 0, 0, 0, 0, + (ID3D11Resource *)texture, subindex, NULL); + + sw_img = mp_image_pool_get(swpool, mpfmt, tex_desc.Width, tex_desc.Height); + if (!sw_img) + goto done; + + // copy staging texture to the cpu mp_image + D3D11_MAPPED_SUBRESOURCE lock; + hr = ID3D11DeviceContext_Map(device_ctx, (ID3D11Resource *)staging, + 0, D3D11_MAP_READ, 0, &lock); + if (FAILED(hr)) + goto done; + copy_nv12(sw_img, lock.pData, lock.RowPitch, tex_desc.Height); + ID3D11DeviceContext_Unmap(device_ctx, (ID3D11Resource *)staging, 0); + + mp_image_set_size(sw_img, mpi->w, mpi->h); + mp_image_copy_attributes(sw_img, mpi); + ok = true; + +done: + ID3D11Texture2D_Release(staging); + ID3D11DeviceContext_Release(device_ctx); + if (!ok) + mp_image_unrefp(&sw_img); + return sw_img; +} diff --git a/video/decode/d3d.h b/video/decode/d3d.h index 16a8dc0258..6caeb2dc03 100644 --- a/video/decode/d3d.h +++ b/video/decode/d3d.h @@ -67,4 +67,8 @@ void copy_nv12(struct mp_image *dest, uint8_t *src_bits, bool d3d11_check_decoding(ID3D11Device *dev); +struct mp_image *d3d11_download_image(struct mp_hwdec_ctx *ctx, + struct mp_image *mpi, + struct mp_image_pool *swpool); + #endif diff --git a/video/out/opengl/hwdec_d3d11egl.c b/video/out/opengl/hwdec_d3d11egl.c index 1e69d87269..07333c372e 100644 --- a/video/out/opengl/hwdec_d3d11egl.c +++ b/video/out/opengl/hwdec_d3d11egl.c @@ -195,6 +195,7 @@ static int create(struct gl_hwdec *hw) .type = HWDEC_D3D11VA, .driver_name = hw->driver->name, .ctx = p->d3d11_device, + .download_image = d3d11_download_image, }; hwdec_devices_add(hw->devs, &p->hwctx); |