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dxgiscreencapsrc: Load HLSL compiler library using g_module_open

Browse source 
Depending on OS version, available d3dcompiler library name is different.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1355>
This commit is contained in:
Seungha Yang 2020-06-19 22:14:29 +09:00 committed by GStreamer Merge Bot
parent 96a5760751
commit 9042062072
6 changed files with 77 additions and 16 deletions
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52
sys/winscreencap/dxgicapture.c
View file

@ -24,6 +24,7 @@
#include "dxgicapture.h"
#include <d3dcompiler.h>
#include <gmodule.h>
GST_DEBUG_CATEGORY_EXTERN (gst_dxgi_screen_cap_src_debug);
#define GST_CAT_DEFAULT gst_dxgi_screen_cap_src_debug
@ -159,6 +160,51 @@ static void _set_verteces (DxgiCapture * self, vertex * verteces,
RECT * dest_rect, const D3D11_TEXTURE2D_DESC * dst_desc, RECT * rect,
const D3D11_TEXTURE2D_DESC * src_desc);
static GModule *d3d_compiler_module = NULL;
static pD3DCompile GstD3DCompileFunc = NULL;
gboolean
gst_dxgicap_shader_init (void)
{
static volatile gsize _init = 0;
static const gchar *d3d_compiler_names[] = {
"d3dcompiler_47.dll",
"d3dcompiler_46.dll",
"d3dcompiler_45.dll",
"d3dcompiler_44.dll",
"d3dcompiler_43.dll",
};
if (g_once_init_enter (&_init)) {
gint i;
for (i = 0; i < G_N_ELEMENTS (d3d_compiler_names); i++) {
d3d_compiler_module =
g_module_open (d3d_compiler_names[i], G_MODULE_BIND_LAZY);
if (d3d_compiler_module) {
GST_INFO ("D3D compiler %s is available", d3d_compiler_names[i]);
if (!g_module_symbol (d3d_compiler_module, "D3DCompile",
(gpointer *) & GstD3DCompileFunc)) {
GST_ERROR ("Cannot load D3DCompile symbol from %s",
d3d_compiler_names[i]);
g_module_close (d3d_compiler_module);
d3d_compiler_module = NULL;
GstD3DCompileFunc = NULL;
} else {
break;
}
}
}
if (!GstD3DCompileFunc)
GST_WARNING ("D3D11 compiler library is unavailable");
g_once_init_leave (&_init, 1);
}
return ! !GstD3DCompileFunc;
}
DxgiCapture *
dxgicap_new (HMONITOR monitor, GstDXGIScreenCapSrc * src)
{
@ -272,13 +318,15 @@ dxgicap_new (HMONITOR monitor, GstDXGIScreenCapSrc * src)
}
if (DXGI_MODE_ROTATION_IDENTITY != self->dupl_desc.Rotation) {
g_assert (GstD3DCompileFunc);
/* For a rotated display, create a shader. */
hr = D3DCompile (STR_VERTEX_SHADER, sizeof (STR_VERTEX_SHADER),
hr = GstD3DCompileFunc (STR_VERTEX_SHADER, sizeof (STR_VERTEX_SHADER),
NULL, NULL, NULL, "vs_main", "vs_4_0_level_9_1",
0, 0, &vertex_shader_blob, NULL);
HR_FAILED_GOTO (hr, D3DCompile, new_error);
hr = D3DCompile (STR_PIXEL_SHADER, sizeof (STR_PIXEL_SHADER),
hr = GstD3DCompileFunc (STR_PIXEL_SHADER, sizeof (STR_PIXEL_SHADER),
NULL, NULL, NULL, "ps_main", "ps_4_0_level_9_1",
0, 0, &pixel_shader_blob, NULL);
HR_FAILED_GOTO (hr, D3DCompile, new_error);

2
sys/winscreencap/dxgicapture.h
View file

@ -61,6 +61,8 @@ typedef struct _GstDXGIScreenCapSrc GstDXGIScreenCapSrc;
typedef struct _DxgiCapture DxgiCapture;
gboolean gst_dxgicap_shader_init (void);
DxgiCapture *dxgicap_new (HMONITOR monitor, GstDXGIScreenCapSrc * src);
void dxgicap_destory (DxgiCapture * _this);

19
sys/winscreencap/gstdxgiscreencapsrc.c
View file

@ -43,6 +43,8 @@
#include "config.h"
#endif
#include <windows.h>
#include <versionhelpers.h>
#include <gst/video/video.h>
#include "gstdxgiscreencapsrc.h"
#include "dxgicapture.h"
@ -560,3 +562,20 @@ _get_hmonitor (GstDXGIScreenCapSrc * src)
}
return hmonitor;
}
void
gst_dxgi_screen_cap_src_register (GstPlugin * plugin, GstRank rank)
{
if (!IsWindows8OrGreater ()) {
GST_WARNING ("OS version is too old");
return;
}
if (!gst_dxgicap_shader_init ()) {
GST_WARNING ("Couldn't load HLS compiler");
return;
}
gst_element_register (plugin, "dxgiscreencapsrc",
rank, GST_TYPE_DXGI_SCREEN_CAP_SRC);
}

3
sys/winscreencap/gstdxgiscreencapsrc.h
View file

@ -28,5 +28,8 @@ G_BEGIN_DECLS
G_DECLARE_FINAL_TYPE (GstDXGIScreenCapSrc, gst_dxgi_screen_cap_src, GST,
DXGI_SCREEN_CAP_SRC, GstPushSrc);
void gst_dxgi_screen_cap_src_register (GstPlugin * plugin,
GstRank rank);
G_END_DECLS
#endif /* __GST_DXGI_SCREEN_CAP_SRC_H__ */

12
sys/winscreencap/gstwinscreencap.c
View file

@ -25,7 +25,6 @@
#include "gstdx9screencapsrc.h"
#ifdef HAVE_DXGI_CAP
#include <versionhelpers.h>
#include "gstdxgiscreencapsrc.h"
GST_DEBUG_CATEGORY (gst_dxgi_screen_cap_src_debug);
@ -73,16 +72,7 @@ plugin_init (GstPlugin * plugin)
return FALSE;
}
#ifdef HAVE_DXGI_CAP
if (IsWindows8OrGreater ()) {
GST_DEBUG_CATEGORY_INIT (gst_dxgi_screen_cap_src_debug,
"dxgiscreencapsrc", 0, "DirectX DXGI screen capture source");
/* dxgiscreencapsrc is needs Windows8 or later. */
if (!gst_element_register (plugin, "dxgiscreencapsrc",
GST_RANK_NONE, GST_TYPE_DXGI_SCREEN_CAP_SRC)) {
return FALSE;
}
}
gst_dxgi_screen_cap_src_register (plugin, GST_RANK_NONE);
#endif
return TRUE;

5
sys/winscreencap/meson.build
View file

@ -17,7 +17,6 @@ d3d_dep = cc.find_library('d3d9', required : get_option('winscreencap'))
gdi_dep = cc.find_library('gdi32', required : get_option('winscreencap'))
d3d11_dep = cc.find_library('d3d11', required : false)
dxgi_lib_dep = cc.find_library('dxgi', required : false)
d3d_compile_dep = cc.find_library('d3dcompiler', required : false)
windowscodecs_dep = cc.find_library('windowscodecs', required : false)
dxguid_dep = cc.find_library('dxguid', required : false)
@ -31,12 +30,12 @@ if not have_d3d9_h and get_option('winscreencap').enabled()
error('winscreencap plugin enabled but d3d9.h not found')
endif
have_dxgi = d3d11_dep.found() and dxgi_lib_dep.found() and d3d_compile_dep.found() and windowscodecs_dep.found() and dxguid_dep.found() and have_d3d11_h and have_dxgi_h and have_d3dcompiler_h and have_versionhelpers_h
have_dxgi = d3d11_dep.found() and dxgi_lib_dep.found() and windowscodecs_dep.found() and dxguid_dep.found() and have_d3d11_h and have_dxgi_h and have_d3dcompiler_h and have_versionhelpers_h
if have_dxgi
dxgi_c_args += ['-DHAVE_DXGI_CAP']
dxgiscreencap_sources += ['dxgicapture.c', 'gstdxgiscreencapsrc.c']
dxgi_dep += [d3d11_dep, dxgi_lib_dep, d3d_compile_dep, windowscodecs_dep, dxguid_dep]
dxgi_dep += [gmodule_dep, d3d11_dep, dxgi_lib_dep, windowscodecs_dep, dxguid_dep]
endif
if d3d_dep.found() and gdi_dep.found() and have_d3d9_h