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d3d11decoder: Fix copying decoder view to staging

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Source texture (decoder view) might be larger than destination (staging) texture.
In that case, D3D11_BOX structure should be passed to CopySubresourceRegion method
in order to specify the exact target area.
This commit is contained in:
Seungha Yang 2020-02-13 21:19:37 +09:00
parent f156ee1da4
commit 9bf4746e2f
1 changed files with 15 additions and 1 deletions
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16
sys/d3d11/gstd3d11decoder.c
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@ -50,6 +50,7 @@ struct _GstD3D11DecoderPrivate
/* for staging */
ID3D11Texture2D *staging;
D3D11_TEXTURE2D_DESC staging_desc;
D3D11_BOX staging_box;
GUID decoder_profile;
};
@ -622,6 +623,18 @@ gst_d3d11_decoder_open (GstD3D11Decoder * decoder, GstD3D11Codec codec,
goto error;
}
/* This D3D11_BOX structure is used to copy decoder view to staging texture,
* in case of system memory downstream.
* Since resolution of decoder view might be larger than this staging texture,
* this D3D11_BOX structure will guide the target area which need to be copied.
*/
priv->staging_box.left = 0;
priv->staging_box.top = 0;
priv->staging_box.front = 0;
priv->staging_box.back = 1;
priv->staging_box.right = GST_VIDEO_INFO_WIDTH (info);
priv->staging_box.bottom = GST_VIDEO_INFO_HEIGHT (info);
priv->decoder_profile = *selected_profile;
decoder->opened = TRUE;
gst_d3d11_device_unlock (priv->device);
@ -879,7 +892,8 @@ copy_to_system (GstD3D11Decoder * self, GstVideoInfo * info,
gst_d3d11_device_lock (priv->device);
ID3D11DeviceContext_CopySubresourceRegion (device_context,
(ID3D11Resource *) priv->staging, 0, 0, 0, 0,
(ID3D11Resource *) in_mem->texture, in_mem->subresource_index, NULL);
(ID3D11Resource *) in_mem->texture, in_mem->subresource_index,
&priv->staging_box);
hr = ID3D11DeviceContext_Map (device_context,
(ID3D11Resource *) priv->staging, 0, D3D11_MAP_READ, 0, &map);