gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12download.cpp

322 lines
10 KiB
C++

/* GStreamer
* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstd3d12download.h"
#include "gstd3d12pluginutils.h"
GST_DEBUG_CATEGORY_STATIC (gst_d3d12_download_debug);
#define GST_CAT_DEFAULT gst_d3d12_download_debug
static GstStaticPadTemplate sink_template =
GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY, GST_D3D12_ALL_FORMATS) "; "
GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY ","
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
GST_D3D12_ALL_FORMATS) "; "
GST_VIDEO_CAPS_MAKE (GST_D3D12_ALL_FORMATS) "; "
GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY ","
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
GST_D3D12_ALL_FORMATS)));
static GstStaticPadTemplate src_template =
GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY, GST_D3D12_ALL_FORMATS) "; "
GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY ","
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
GST_D3D12_ALL_FORMATS) "; "
GST_VIDEO_CAPS_MAKE (GST_D3D12_ALL_FORMATS) "; "
GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY ","
GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION,
GST_D3D12_ALL_FORMATS)));
struct _GstD3D12Download
{
GstD3D12BaseFilter parent;
};
#define gst_d3d12_download_parent_class parent_class
G_DEFINE_TYPE (GstD3D12Download, gst_d3d12_download,
GST_TYPE_D3D12_BASE_FILTER);
static GstCaps *gst_d3d12_download_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter);
static gboolean gst_d3d12_download_propose_allocation (GstBaseTransform * trans,
GstQuery * decide_query, GstQuery * query);
static gboolean gst_d3d12_download_decide_allocation (GstBaseTransform * trans,
GstQuery * query);
static GstFlowReturn gst_d3d12_download_transform (GstBaseTransform * trans,
GstBuffer * inbuf, GstBuffer * outbuf);
static void
gst_d3d12_download_class_init (GstD3D12DownloadClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass);
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_add_static_pad_template (element_class, &src_template);
gst_element_class_set_static_metadata (element_class,
"Direct3D12 Downloader", "Filter/Video",
"Downloads Direct3D12 texture memory into system memory",
"Seungha Yang <seungha@centricular.com>");
trans_class->passthrough_on_same_caps = TRUE;
trans_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_d3d12_download_transform_caps);
trans_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_d3d12_download_propose_allocation);
trans_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_d3d12_download_decide_allocation);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_d3d12_download_transform);
GST_DEBUG_CATEGORY_INIT (gst_d3d12_download_debug,
"d3d12download", 0, "d3d12download Element");
}
static void
gst_d3d12_download_init (GstD3D12Download * self)
{
}
static GstCaps *
_set_caps_features (const GstCaps * caps, const gchar * feature_name)
{
GstCaps *tmp = gst_caps_copy (caps);
guint n = gst_caps_get_size (tmp);
guint i = 0;
for (i = 0; i < n; i++) {
gst_caps_set_features (tmp, i,
gst_caps_features_from_string (feature_name));
}
return tmp;
}
static GstCaps *
gst_d3d12_download_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstCaps *result, *tmp;
GST_DEBUG_OBJECT (trans,
"Transforming caps %" GST_PTR_FORMAT " in direction %s", caps,
(direction == GST_PAD_SINK) ? "sink" : "src");
if (direction == GST_PAD_SINK) {
tmp = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
tmp = gst_caps_merge (gst_caps_ref (caps), tmp);
} else {
GstCaps *newcaps;
tmp = gst_caps_ref (caps);
newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY);
tmp = gst_caps_merge (tmp, newcaps);
}
if (filter) {
result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (tmp);
} else {
result = tmp;
}
GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, result);
return result;
}
static gboolean
gst_d3d12_download_propose_allocation (GstBaseTransform * trans,
GstQuery * decide_query, GstQuery * query)
{
GstD3D12BaseFilter *filter = GST_D3D12_BASE_FILTER (trans);
GstVideoInfo info;
GstBufferPool *pool;
GstCaps *caps;
guint size;
gboolean is_d3d12 = FALSE;
if (!GST_BASE_TRANSFORM_CLASS (parent_class)->propose_allocation (trans,
decide_query, query))
return FALSE;
/* passthrough, we're done */
if (!decide_query)
return TRUE;
gst_query_parse_allocation (query, &caps, nullptr);
if (!caps) {
GST_WARNING_OBJECT (filter, "Allocation query without caps");
return FALSE;
}
if (!gst_video_info_from_caps (&info, caps))
return FALSE;
if (gst_query_get_n_allocation_pools (query) == 0) {
GstCapsFeatures *features;
GstStructure *config;
features = gst_caps_get_features (caps, 0);
if (features && gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY)) {
GST_DEBUG_OBJECT (filter, "upstream support d3d12 memory");
pool = gst_d3d12_buffer_pool_new (filter->device);
is_d3d12 = TRUE;
} else {
pool = gst_video_buffer_pool_new ();
}
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
if (!is_d3d12) {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
}
size = GST_VIDEO_INFO_SIZE (&info);
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
if (!gst_buffer_pool_set_config (pool, config)) {
GST_ERROR_OBJECT (filter, "Bufferpool config failed");
gst_object_unref (pool);
return FALSE;
}
/* d3d12 buffer pool will update buffer size based on allocated texture,
* get size from config again */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config,
nullptr, &size, nullptr, nullptr);
gst_structure_free (config);
gst_query_add_allocation_pool (query, pool, size, 0, 0);
gst_object_unref (pool);
}
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, nullptr);
gst_query_add_allocation_meta (query,
GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, nullptr);
return TRUE;
}
static gboolean
gst_d3d12_download_decide_allocation (GstBaseTransform * trans,
GstQuery * query)
{
GstBufferPool *pool = nullptr;
GstStructure *config;
guint min, max, size;
gboolean update_pool;
GstCaps *outcaps = nullptr;
gst_query_parse_allocation (query, &outcaps, nullptr);
if (!outcaps) {
GST_WARNING_OBJECT (trans, "Allocation query without caps");
return FALSE;
}
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
update_pool = TRUE;
} else {
GstVideoInfo vinfo;
gst_video_info_from_caps (&vinfo, outcaps);
size = vinfo.size;
min = max = 0;
update_pool = FALSE;
}
if (!pool) {
pool = gst_video_buffer_pool_new ();
}
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_buffer_pool_config_set_params (config, outcaps, size, min, max);
gst_buffer_pool_set_config (pool, config);
/* d3d12 buffer pool will update buffer size based on allocated texture,
* get size from config again */
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, nullptr, &size, nullptr, nullptr);
gst_structure_free (config);
if (update_pool)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
gst_object_unref (pool);
return GST_BASE_TRANSFORM_CLASS (parent_class)->decide_allocation (trans,
query);
}
static GstFlowReturn
gst_d3d12_download_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstBuffer * outbuf)
{
GstD3D12BaseFilter *filter = GST_D3D12_BASE_FILTER (trans);
GstVideoFrame in_frame, out_frame;
GstFlowReturn ret = GST_FLOW_OK;
if (!gst_video_frame_map (&in_frame, &filter->in_info, inbuf, GST_MAP_READ)) {
GST_ERROR_OBJECT (filter, "Couldn't map input frame");
return GST_FLOW_ERROR;
}
if (!gst_video_frame_map (&out_frame,
&filter->out_info, outbuf, GST_MAP_WRITE)) {
GST_ERROR_OBJECT (filter, "Couldn't map output frame");
gst_video_frame_unmap (&in_frame);
return GST_FLOW_ERROR;
}
if (!gst_video_frame_copy (&out_frame, &in_frame)) {
GST_ERROR_OBJECT (filter, "Copy failed");
ret = GST_FLOW_ERROR;
}
gst_video_frame_unmap (&out_frame);
gst_video_frame_unmap (&in_frame);
return ret;
}