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"
GST_DEBUG_CATEGORY_STATIC (gst_d3d11_utils_debug);
GST_DEBUG_CATEGORY_STATIC (GST_CAT_CONTEXT);
static GstDebugCategory *
_init_d3d11_utils_debug (void)
{
static volatile gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (gst_d3d11_utils_debug, "d3d11utils", 0,
"Direct3D11 Utilities");
g_once_init_leave (&_init, 1);
}
return 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);
}
}
#define GST_CAT_DEFAULT _init_d3d11_utils_debug()
static const struct
{
GstVideoFormat gst_format;
DXGI_FORMAT dxgi_format;
} gst_dxgi_format_map[] = {
/* TODO: add more formats */
{
GST_VIDEO_FORMAT_BGRA, DXGI_FORMAT_B8G8R8A8_UNORM}, {
GST_VIDEO_FORMAT_RGBA, DXGI_FORMAT_R8G8B8A8_UNORM}, {
GST_VIDEO_FORMAT_RGB10A2_LE, DXGI_FORMAT_R10G10B10A2_UNORM}
};
GstVideoFormat
gst_d3d11_dxgi_format_to_gst (DXGI_FORMAT format)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (gst_dxgi_format_map); i++) {
if (gst_dxgi_format_map[i].dxgi_format == format)
return gst_dxgi_format_map[i].gst_format;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
DXGI_FORMAT
gst_d3d11_dxgi_format_from_gst (GstVideoFormat format)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (gst_dxgi_format_map); i++) {
if (gst_dxgi_format_map[i].gst_format == format)
return gst_dxgi_format_map[i].dxgi_format;
}
return DXGI_FORMAT_UNKNOWN;
}
typedef struct
{
GstCaps *caps;
D3D11_FORMAT_SUPPORT flags;
} SupportCapsData;
static void
gst_d3d11_device_get_supported_caps_internal (GstD3D11Device * device,
SupportCapsData * data)
{
ID3D11Device *d3d11_device;
HRESULT hr;
gint i;
GValue v_list = G_VALUE_INIT;
GstCaps *supported_caps;
d3d11_device = gst_d3d11_device_get_device (device);
g_value_init (&v_list, GST_TYPE_LIST);
for (i = 0; i < G_N_ELEMENTS (gst_dxgi_format_map); i++) {
UINT format_support = 0;
GstVideoFormat format = gst_dxgi_format_map[i].gst_format;
hr = ID3D11Device_CheckFormatSupport (d3d11_device,
gst_dxgi_format_map[i].dxgi_format, &format_support);
if (SUCCEEDED (hr) && ((format_support & data->flags) == data->flags)) {
GValue v_str = G_VALUE_INIT;
g_value_init (&v_str, G_TYPE_STRING);
GST_LOG_OBJECT (device, "d3d11 device can support %s with flags 0x%x",
gst_video_format_to_string (format), data->flags);
g_value_set_string (&v_str, gst_video_format_to_string (format));
gst_value_list_append_and_take_value (&v_list, &v_str);
}
}
supported_caps = gst_caps_new_simple ("video/x-raw",
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
gst_caps_set_value (supported_caps, "format", &v_list);
g_value_unset (&v_list);
data->caps = supported_caps;
}
/**
* gst_d3d11_device_get_supported_caps:
* @device: a #GstD3DDevice
* @flags: D3D11_FORMAT_SUPPORT flags
*
* Check supported format with given flags
*
* Returns: a #GstCaps representing supported format
*/
GstCaps *
gst_d3d11_device_get_supported_caps (GstD3D11Device * device,
D3D11_FORMAT_SUPPORT flags)
{
SupportCapsData data;
g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), NULL);
data.caps = NULL;
data.flags = flags;
gst_d3d11_device_thread_add (device, (GstD3D11DeviceThreadFunc)
gst_d3d11_device_get_supported_caps_internal, &data);
return data.caps;
}
gboolean
gst_d3d11_calculate_buffer_size (GstVideoInfo * info, guint pitch,
gsize offset[GST_VIDEO_MAX_PLANES], gint stride[GST_VIDEO_MAX_PLANES],
gsize * size)
{
g_return_val_if_fail (info != NULL, FALSE);
switch (GST_VIDEO_INFO_FORMAT (info)) {
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_RGB10A2_LE:
offset[0] = 0;
stride[0] = pitch;
*size = pitch * GST_VIDEO_INFO_HEIGHT (info);
break;
case GST_VIDEO_FORMAT_NV12:
offset[0] = 0;
stride[0] = pitch;
offset[1] = offset[0] + stride[0] * GST_VIDEO_INFO_COMP_HEIGHT (info, 0);
stride[1] = pitch;
*size = offset[1] + stride[1] * GST_VIDEO_INFO_COMP_HEIGHT (info, 1);
break;
default:
return FALSE;
}
GST_LOG ("Calculated buffer size: %" G_GSIZE_FORMAT
" (%s %dx%d, Pitch %d)", *size,
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)),
GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info), pitch);
return TRUE;
}
/**
* 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,
GstD3D11Device ** device)
{
GstD3D11Device *device_replacement = NULL;
g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
g_return_val_if_fail (device != NULL, FALSE);
if (!context)
return FALSE;
if (!gst_context_get_d3d11_device (context, &device_replacement))
return FALSE;
if (*device)
gst_object_unref (*device);
*device = device_replacement;
return TRUE;
}
/**
* 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);
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);
gst_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)
{
GstQuery *query;
GstContext *ctxt;
/* 2a) Query downstream with GST_QUERY_CONTEXT for the context and
* check if downstream already has a context of the specific type
* 2b) Query upstream as above.
*/
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);
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%" GST_PTR_FORMAT ") in downstream query", ctxt);
gst_element_set_context (element, ctxt);
} else if (run_query (element, query, GST_PAD_SINK)) {
gst_query_parse_context (query, &ctxt);
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"found context (%" GST_PTR_FORMAT ") in upstream query", ctxt);
gst_element_set_context (element, ctxt);
} else {
/* 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
* @device: (inout): the resulting #GstD3D11Device
* @preferred_adapter: the index of preferred adapter
*
* 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, GstD3D11Device ** device,
gint preferred_adapter)
{
GstD3D11Device *new_device;
GstContext *context;
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);
/* Neighbour found and it updated the devicey */
if (*device) {
return TRUE;
}
new_device = gst_d3d11_device_new (preferred_adapter);
if (!new_device) {
GST_ERROR_OBJECT (element,
"Couldn't create new device with adapter index %d", preferred_adapter);
return FALSE;
}
*device = new_device;
context = gst_context_new (GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE, TRUE);
gst_context_set_d3d11_device (context, new_device);
gst_element_set_context (element, context);
GST_CAT_INFO_OBJECT (GST_CAT_CONTEXT, element,
"posting have context (%" GST_PTR_FORMAT
") message with device (%" GST_PTR_FORMAT ")", context, device);
gst_element_post_message (GST_ELEMENT_CAST (element),
gst_message_new_have_context (GST_OBJECT_CAST (element), context));
return TRUE;
}