gstreamer/sys/d3d11/gstd3d11utils.c

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/* GStreamer
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.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 "gstd3d11utils.h"
#include "gstd3d11device.h"
#include <windows.h>
#include <versionhelpers.h>
GST_DEBUG_CATEGORY_STATIC (GST_CAT_CONTEXT);
GST_DEBUG_CATEGORY_EXTERN (gst_d3d11_utils_debug);
#define GST_CAT_DEFAULT gst_d3d11_utils_debug
static void
_init_context_debug (void)
{
static volatile gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_GET (GST_CAT_CONTEXT, "GST_CONTEXT");
g_once_init_leave (&_init, 1);
}
}
/**
* gst_d3d11_handle_set_context:
* @element: a #GstElement
* @context: a #GstContext
* @device: (inout) (transfer full): location of a #GstD3DDevice
*
* Helper function for implementing #GstElementClass.set_context() in
* D3D11 capable elements.
*
* Retrieve's the #GstD3D11Device in @context and places the result in @device.
*
* Returns: whether the @device could be set successfully
*/
gboolean
gst_d3d11_handle_set_context (GstElement * element, GstContext * context,
gint adapter, GstD3D11Device ** device)
{
const gchar *context_type;
g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
g_return_val_if_fail (device != NULL, FALSE);
_init_context_debug ();
if (!context)
return FALSE;
context_type = gst_context_get_context_type (context);
if (g_strcmp0 (context_type, GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE) == 0) {
const GstStructure *str;
GstD3D11Device *other_device = NULL;
gint other_adapter = 0;
/* If we had device already, will not replace it */
if (*device)
return TRUE;
str = gst_context_get_structure (context);
if (gst_structure_get (str, "device", GST_TYPE_D3D11_DEVICE,
&other_device, "adapter", G_TYPE_INT, &other_adapter, NULL)) {
if (adapter == -1 || adapter == other_adapter) {
GST_CAT_DEBUG_OBJECT (GST_CAT_CONTEXT,
element, "Found D3D11 device context");
*device = other_device;
return TRUE;
}
gst_object_unref (other_device);
}
}
return FALSE;
}
static void
context_set_d3d11_device (GstContext * context, GstD3D11Device * device)
{
GstStructure *s;
gint adapter;
g_return_if_fail (context != NULL);
g_object_get (G_OBJECT (device), "adapter", &adapter, NULL);
GST_CAT_LOG (GST_CAT_CONTEXT,
"setting GstD3D11Device(%" GST_PTR_FORMAT
") with adapter %d on context(%" GST_PTR_FORMAT ")",
device, adapter, context);
s = gst_context_writable_structure (context);
gst_structure_set (s, "device", GST_TYPE_D3D11_DEVICE,
device, "adapter", G_TYPE_INT, adapter, NULL);
}
/**
* gst_d3d11_handle_context_query:
* @element: a #GstElement
* @query: a #GstQuery of type %GST_QUERY_CONTEXT
* @device: (transfer none) (nullable): a #GstD3D11Device
*
* Returns: Whether the @query was successfully responded to from the passed
* @device.
*/
gboolean
gst_d3d11_handle_context_query (GstElement * element, GstQuery * query,
GstD3D11Device * device)
{
const gchar *context_type;
GstContext *context, *old_context;
g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
g_return_val_if_fail (GST_IS_QUERY (query), FALSE);
_init_context_debug ();
GST_LOG_OBJECT (element, "handle context query %" GST_PTR_FORMAT, query);
if (!device)
return FALSE;
gst_query_parse_context_type (query, &context_type);
if (g_strcmp0 (context_type, GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE) != 0)
return FALSE;
gst_query_parse_context (query, &old_context);
if (old_context)
context = gst_context_copy (old_context);
else
context = gst_context_new (GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE, TRUE);
context_set_d3d11_device (context, device);
gst_query_set_context (query, context);
gst_context_unref (context);
GST_DEBUG_OBJECT (element, "successfully set %" GST_PTR_FORMAT
" on %" GST_PTR_FORMAT, device, query);
return TRUE;
}
static gboolean
pad_query (const GValue * item, GValue * value, gpointer user_data)
{
GstPad *pad = g_value_get_object (item);
GstQuery *query = user_data;
gboolean res;
res = gst_pad_peer_query (pad, query);
if (res) {
g_value_set_boolean (value, TRUE);
return FALSE;
}
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, pad, "pad peer query failed");
return TRUE;
}
static gboolean
run_query (GstElement * element, GstQuery * query, GstPadDirection direction)
{
GstIterator *it;
GstIteratorFoldFunction func = pad_query;
GValue res = { 0 };
g_value_init (&res, G_TYPE_BOOLEAN);
g_value_set_boolean (&res, FALSE);
/* Ask neighbor */
if (direction == GST_PAD_SRC)
it = gst_element_iterate_src_pads (element);
else
it = gst_element_iterate_sink_pads (element);
while (gst_iterator_fold (it, func, &res, query) == GST_ITERATOR_RESYNC)
gst_iterator_resync (it);
gst_iterator_free (it);
return g_value_get_boolean (&res);
}
static void
run_d3d11_context_query (GstElement * element, GstD3D11Device ** device)
{
GstQuery *query;
GstContext *ctxt = NULL;
/* 1) Query downstream with GST_QUERY_CONTEXT for the context and
* check if downstream already has a context of the specific type
*/
query = gst_query_new_context (GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE);
if (run_query (element, query, GST_PAD_SRC)) {
gst_query_parse_context (query, &ctxt);
if (ctxt) {
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%" GST_PTR_FORMAT ") in downstream query", ctxt);
gst_element_set_context (element, ctxt);
}
}
/* 2) although we found d3d11 device context above, the element does not want
* to use the context. Then try to find from the other direction */
if (*device == NULL && run_query (element, query, GST_PAD_SINK)) {
gst_query_parse_context (query, &ctxt);
if (ctxt) {
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%" GST_PTR_FORMAT ") in upstream query", ctxt);
gst_element_set_context (element, ctxt);
}
}
if (*device == NULL) {
/* 3) Post a GST_MESSAGE_NEED_CONTEXT message on the bus with
* the required context type and afterwards check if a
* usable context was set now as in 1). The message could
* be handled by the parent bins of the element and the
* application.
*/
GstMessage *msg;
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"posting need context message");
msg = gst_message_new_need_context (GST_OBJECT_CAST (element),
GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE);
gst_element_post_message (element, msg);
}
/*
* Whomever responds to the need-context message performs a
* GstElement::set_context() with the required context in which the element
* is required to update the display_ptr or call gst_gl_handle_set_context().
*/
gst_query_unref (query);
}
/**
* gst_d3d11_ensure_element_data:
* @element: the #GstElement running the query
* @adapter: prefered adapter index, pass adapter >=0 when
* the adapter explicitly required. Otherwise, set -1.
* @device: (inout): the resulting #GstD3D11Device
*
* Perform the steps necessary for retrieving a #GstD3D11Device
* from the surrounding elements or from the application using the #GstContext mechanism.
*
* If the contents of @device is not %NULL, then no #GstContext query is
* necessary for #GstD3D11Device retrieval is performed.
*
* Returns: whether a #GstD3D11Device exists in @device
*/
gboolean
gst_d3d11_ensure_element_data (GstElement * element, gint adapter,
GstD3D11Device ** device)
{
guint target_adapter = 0;
g_return_val_if_fail (element != NULL, FALSE);
g_return_val_if_fail (device != NULL, FALSE);
_init_context_debug ();
if (*device) {
GST_LOG_OBJECT (element, "already have a device %" GST_PTR_FORMAT, *device);
return TRUE;
}
run_d3d11_context_query (element, device);
if (*device)
return TRUE;
if (adapter > 0)
target_adapter = adapter;
*device = gst_d3d11_device_new (target_adapter);
if (*device == NULL) {
GST_ERROR_OBJECT (element,
"Couldn't create new device with adapter index %d", target_adapter);
return FALSE;
} else {
GstContext *context;
GstMessage *msg;
/* Propagate new D3D11 device context */
context = gst_context_new (GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE, TRUE);
context_set_d3d11_device (context, *device);
gst_element_set_context (element, context);
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"posting have context (%p) message with D3D11 device context (%p)",
context, *device);
msg = gst_message_new_have_context (GST_OBJECT_CAST (element), context);
gst_element_post_message (GST_ELEMENT_CAST (element), msg);
}
return TRUE;
}
gboolean
gst_d3d11_is_windows_8_or_greater (void)
{
static gsize version_once = 0;
static gboolean ret = FALSE;
if (g_once_init_enter (&version_once)) {
#if (!GST_D3D11_WINAPI_ONLY_APP)
if (IsWindows8OrGreater ())
ret = TRUE;
#else
ret = TRUE;
#endif
g_once_init_leave (&version_once, 1);
}
return ret;
}
GstD3D11DeviceVendor
gst_d3d11_get_device_vendor (GstD3D11Device * device)
{
guint device_id = 0;
guint vendor_id = 0;
gchar *desc = NULL;
GstD3D11DeviceVendor vendor = GST_D3D11_DEVICE_VENDOR_UNKNOWN;
g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), FALSE);
g_object_get (device, "device-id", &device_id, "vendor-id", &vendor_id,
"description", &desc, NULL);
switch (vendor_id) {
case 0:
if (device_id == 0 && desc && g_strrstr (desc, "SraKmd"))
vendor = GST_D3D11_DEVICE_VENDOR_XBOX;
break;
case 0x1002:
case 0x1022:
vendor = GST_D3D11_DEVICE_VENDOR_AMD;
break;
case 0x8086:
vendor = GST_D3D11_DEVICE_VENDOR_INTEL;
break;
case 0x10de:
vendor = GST_D3D11_DEVICE_VENDOR_NVIDIA;
break;
case 0x4d4f4351:
vendor = GST_D3D11_DEVICE_VENDOR_QUALCOMM;
break;
default:
break;
}
g_free (desc);
return vendor;
}
static gchar *
gst_d3d11_hres_to_string (HRESULT hr)
{
DWORD flags;
gchar *ret_text;
LPTSTR error_text = NULL;
flags = FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER
| FORMAT_MESSAGE_IGNORE_INSERTS;
FormatMessage (flags, NULL, hr, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) & error_text, 0, NULL);
#ifdef UNICODE
/* If UNICODE is defined, LPTSTR is LPWSTR which is UTF-16 */
ret_text = g_utf16_to_utf8 (error_text, 0, NULL, NULL, NULL);
#else
ret_text = g_strdup (error_text);
#endif
LocalFree (error_text);
return ret_text;
}
gboolean
_gst_d3d11_result (HRESULT hr, GstD3D11Device * device, GstDebugCategory * cat,
const gchar * file, const gchar * function, gint line)
{
#ifndef GST_DISABLE_GST_DEBUG
gboolean ret = TRUE;
if (FAILED (hr)) {
gchar *error_text = NULL;
error_text = gst_d3d11_hres_to_string (hr);
gst_debug_log (cat, GST_LEVEL_WARNING, file, function, line,
NULL, "D3D11 call failed: 0x%x, %s", (guint) hr, error_text);
g_free (error_text);
ret = FALSE;
}
#if (HAVE_D3D11SDKLAYERS_H || HAVE_DXGIDEBUG_H)
if (device) {
gst_d3d11_device_d3d11_debug (device, file, function, line);
gst_d3d11_device_dxgi_debug (device, file, function, line);
}
#endif
return ret;
#else
return SUCCEEDED (hr);
#endif
}