324 lines
10 KiB
C++
324 lines
10 KiB
C++
/* GStreamer
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* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "gstd3d12download.h"
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#include "gstd3d12bufferpool.h"
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#include "gstd3d12format.h"
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GST_DEBUG_CATEGORY_STATIC (gst_d3d12_download_debug);
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#define GST_CAT_DEFAULT gst_d3d12_download_debug
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static GstStaticPadTemplate sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY, GST_D3D12_ALL_FORMATS) "; "
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY ","
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
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GST_D3D12_ALL_FORMATS) "; "
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GST_VIDEO_CAPS_MAKE (GST_D3D12_ALL_FORMATS) "; "
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY ","
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
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GST_D3D12_ALL_FORMATS)));
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static GstStaticPadTemplate src_template =
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GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY, GST_D3D12_ALL_FORMATS) "; "
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY ","
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
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GST_D3D12_ALL_FORMATS) "; "
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GST_VIDEO_CAPS_MAKE (GST_D3D12_ALL_FORMATS) "; "
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GST_VIDEO_CAPS_MAKE_WITH_FEATURES
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(GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY ","
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GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
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GST_D3D12_ALL_FORMATS)));
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struct _GstD3D12Download
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{
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GstD3D12BaseFilter parent;
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};
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#define gst_d3d12_download_parent_class parent_class
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G_DEFINE_TYPE (GstD3D12Download, gst_d3d12_download,
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GST_TYPE_D3D12_BASE_FILTER);
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static GstCaps *gst_d3d12_download_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter);
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static gboolean gst_d3d12_download_propose_allocation (GstBaseTransform * trans,
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GstQuery * decide_query, GstQuery * query);
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static gboolean gst_d3d12_download_decide_allocation (GstBaseTransform * trans,
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GstQuery * query);
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static GstFlowReturn gst_d3d12_download_transform (GstBaseTransform * trans,
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GstBuffer * inbuf, GstBuffer * outbuf);
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static void
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gst_d3d12_download_class_init (GstD3D12DownloadClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass);
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gst_element_class_add_static_pad_template (element_class, &sink_template);
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gst_element_class_add_static_pad_template (element_class, &src_template);
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gst_element_class_set_static_metadata (element_class,
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"Direct3D12 Downloader", "Filter/Video",
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"Downloads Direct3D12 texture memory into system memory",
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"Seungha Yang <seungha@centricular.com>");
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trans_class->passthrough_on_same_caps = TRUE;
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trans_class->transform_caps =
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GST_DEBUG_FUNCPTR (gst_d3d12_download_transform_caps);
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trans_class->propose_allocation =
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GST_DEBUG_FUNCPTR (gst_d3d12_download_propose_allocation);
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trans_class->decide_allocation =
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GST_DEBUG_FUNCPTR (gst_d3d12_download_decide_allocation);
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trans_class->transform = GST_DEBUG_FUNCPTR (gst_d3d12_download_transform);
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GST_DEBUG_CATEGORY_INIT (gst_d3d12_download_debug,
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"d3d12download", 0, "d3d12download Element");
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}
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static void
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gst_d3d12_download_init (GstD3D12Download * self)
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{
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}
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static GstCaps *
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_set_caps_features (const GstCaps * caps, const gchar * feature_name)
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{
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GstCaps *tmp = gst_caps_copy (caps);
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guint n = gst_caps_get_size (tmp);
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guint i = 0;
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for (i = 0; i < n; i++) {
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gst_caps_set_features (tmp, i,
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gst_caps_features_from_string (feature_name));
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}
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return tmp;
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}
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static GstCaps *
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gst_d3d12_download_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps, GstCaps * filter)
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{
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GstCaps *result, *tmp;
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GST_DEBUG_OBJECT (trans,
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"Transforming caps %" GST_PTR_FORMAT " in direction %s", caps,
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(direction == GST_PAD_SINK) ? "sink" : "src");
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if (direction == GST_PAD_SINK) {
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tmp = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
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tmp = gst_caps_merge (gst_caps_ref (caps), tmp);
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} else {
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GstCaps *newcaps;
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tmp = gst_caps_ref (caps);
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newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY);
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tmp = gst_caps_merge (tmp, newcaps);
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}
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if (filter) {
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result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (tmp);
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} else {
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result = tmp;
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}
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GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, result);
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return result;
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}
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static gboolean
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gst_d3d12_download_propose_allocation (GstBaseTransform * trans,
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GstQuery * decide_query, GstQuery * query)
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{
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GstD3D12BaseFilter *filter = GST_D3D12_BASE_FILTER (trans);
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GstVideoInfo info;
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GstBufferPool *pool;
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GstCaps *caps;
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guint size;
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gboolean is_d3d12 = FALSE;
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if (!GST_BASE_TRANSFORM_CLASS (parent_class)->propose_allocation (trans,
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decide_query, query))
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return FALSE;
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/* passthrough, we're done */
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if (!decide_query)
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return TRUE;
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gst_query_parse_allocation (query, &caps, nullptr);
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if (!caps) {
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GST_WARNING_OBJECT (filter, "Allocation query without caps");
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return FALSE;
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}
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if (!gst_video_info_from_caps (&info, caps))
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return FALSE;
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if (gst_query_get_n_allocation_pools (query) == 0) {
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GstCapsFeatures *features;
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GstStructure *config;
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features = gst_caps_get_features (caps, 0);
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if (features && gst_caps_features_contains (features,
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GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY)) {
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GST_DEBUG_OBJECT (filter, "upstream support d3d12 memory");
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pool = gst_d3d12_buffer_pool_new (filter->device);
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is_d3d12 = TRUE;
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} else {
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pool = gst_video_buffer_pool_new ();
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}
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_add_option (config,
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GST_BUFFER_POOL_OPTION_VIDEO_META);
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if (!is_d3d12) {
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gst_buffer_pool_config_add_option (config,
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GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
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}
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size = GST_VIDEO_INFO_SIZE (&info);
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gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
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if (!gst_buffer_pool_set_config (pool, config)) {
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GST_ERROR_OBJECT (filter, "Bufferpool config failed");
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gst_object_unref (pool);
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return FALSE;
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}
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/* d3d12 buffer pool will update buffer size based on allocated texture,
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* get size from config again */
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_get_params (config,
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nullptr, &size, nullptr, nullptr);
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gst_structure_free (config);
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gst_query_add_allocation_pool (query, pool, size, 0, 0);
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gst_object_unref (pool);
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}
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gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, nullptr);
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gst_query_add_allocation_meta (query,
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GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, nullptr);
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return TRUE;
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}
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static gboolean
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gst_d3d12_download_decide_allocation (GstBaseTransform * trans,
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GstQuery * query)
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{
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GstBufferPool *pool = nullptr;
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GstStructure *config;
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guint min, max, size;
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gboolean update_pool;
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GstCaps *outcaps = nullptr;
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gst_query_parse_allocation (query, &outcaps, nullptr);
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if (!outcaps) {
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GST_WARNING_OBJECT (trans, "Allocation query without caps");
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return FALSE;
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}
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if (gst_query_get_n_allocation_pools (query) > 0) {
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gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
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update_pool = TRUE;
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} else {
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GstVideoInfo vinfo;
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gst_video_info_from_caps (&vinfo, outcaps);
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size = vinfo.size;
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min = max = 0;
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update_pool = FALSE;
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}
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if (!pool) {
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pool = gst_video_buffer_pool_new ();
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}
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
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gst_buffer_pool_config_set_params (config, outcaps, size, min, max);
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gst_buffer_pool_set_config (pool, config);
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/* d3d12 buffer pool will update buffer size based on allocated texture,
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* get size from config again */
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_get_params (config, nullptr, &size, nullptr, nullptr);
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gst_structure_free (config);
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if (update_pool)
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gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
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else
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gst_query_add_allocation_pool (query, pool, size, min, max);
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gst_object_unref (pool);
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return GST_BASE_TRANSFORM_CLASS (parent_class)->decide_allocation (trans,
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query);
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}
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static GstFlowReturn
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gst_d3d12_download_transform (GstBaseTransform * trans, GstBuffer * inbuf,
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GstBuffer * outbuf)
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{
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GstD3D12BaseFilter *filter = GST_D3D12_BASE_FILTER (trans);
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GstVideoFrame in_frame, out_frame;
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GstFlowReturn ret = GST_FLOW_OK;
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if (!gst_video_frame_map (&in_frame, &filter->in_info, inbuf, GST_MAP_READ)) {
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GST_ERROR_OBJECT (filter, "Couldn't map input frame");
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return GST_FLOW_ERROR;
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}
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if (!gst_video_frame_map (&out_frame,
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&filter->out_info, outbuf, GST_MAP_WRITE)) {
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GST_ERROR_OBJECT (filter, "Couldn't map output frame");
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gst_video_frame_unmap (&in_frame);
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return GST_FLOW_ERROR;
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}
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if (!gst_video_frame_copy (&out_frame, &in_frame)) {
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GST_ERROR_OBJECT (filter, "Copy failed");
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ret = GST_FLOW_ERROR;
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}
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gst_video_frame_unmap (&out_frame);
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gst_video_frame_unmap (&in_frame);
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return ret;
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}
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