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d3d12decoder: Try zero-copy in case of reverse playback too

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In case of tier 1 decoder, always use reference-only picture to avoid
fixed-size pool limitation and output decoded picture without
copy even for negative rate. Also do not use copy queue for GPU to GPU
copy. Copy queue is specialized for upload/download and may occupy
PCIE bandwidth. Use direct queue as recommended by vendors.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5877>
This commit is contained in:
Seungha Yang 2024-01-03 02:03:23 +09:00
parent 1fb44b8160
commit 1b86c9d370
1 changed files with 14 additions and 15 deletions
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29
subprojects/gst-plugins-bad/sys/d3d12/gstd3d12decoder.cpp
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@ -680,10 +680,18 @@ gst_d3d12_decoder_configure (GstD3D12Decoder * decoder,
return GST_FLOW_ERROR;
}
guint max_buffers = session->dpb_size;
if (support.DecodeTier == D3D12_VIDEO_DECODE_TIER_1) {
session->array_of_textures = false;
} else {
session->array_of_textures = true;
max_buffers = 0;
}
D3D12_RESOURCE_FLAGS resource_flags;
if ((support.ConfigurationFlags &
D3D12_VIDEO_DECODE_CONFIGURATION_FLAG_REFERENCE_ONLY_ALLOCATIONS_REQUIRED)
!= 0) {
!= 0 || !session->array_of_textures) {
resource_flags =
D3D12_RESOURCE_FLAG_VIDEO_DECODE_REFERENCE_ONLY |
D3D12_RESOURCE_FLAG_DENY_SHADER_RESOURCE;
@ -693,14 +701,6 @@ gst_d3d12_decoder_configure (GstD3D12Decoder * decoder,
session->reference_only = false;
}
guint max_buffers = session->dpb_size;
if (support.DecodeTier == D3D12_VIDEO_DECODE_TIER_1) {
session->array_of_textures = false;
} else {
session->array_of_textures = true;
max_buffers = 0;
}
GST_DEBUG_OBJECT (decoder, "reference only: %d, array-of-textures: %d",
session->reference_only, session->array_of_textures);
@ -1300,10 +1300,6 @@ gst_d3d12_decoder_can_direct_render (GstD3D12Decoder * self,
{
auto priv = self->priv;
/* We don't support direct render for reverse playback */
if (videodec->input_segment.rate < 0)
return FALSE;
if (priv->session->output_type != GST_D3D12_DECODER_OUTPUT_D3D12)
return FALSE;
@ -1482,9 +1478,12 @@ gst_d3d12_decoder_process_output (GstD3D12Decoder * self,
}
guint64 copy_fence_val = 0;
D3D12_COMMAND_LIST_TYPE queue_type = D3D12_COMMAND_LIST_TYPE_COPY;
if (out_resource)
queue_type = D3D12_COMMAND_LIST_TYPE_DIRECT;
gst_d3d12_device_copy_texture_region (self->device, copy_args.size (),
copy_args.data (), D3D12_COMMAND_LIST_TYPE_COPY, &copy_fence_val);
gst_d3d12_device_fence_wait (self->device, D3D12_COMMAND_LIST_TYPE_COPY,
copy_args.data (), queue_type, &copy_fence_val);
gst_d3d12_device_fence_wait (self->device, queue_type,
copy_fence_val, priv->copy_event_handle);
if (!out_resource) {