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gstreamer/sys/winscreencap/dxgicapture.c
Jakub Adam fa05f19f14 dxgiscreencapsrc: renegotiate caps on resolution change 
When desktop gets resized, recreate the textures and renegotiate the
source caps with the updated video dimensions.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2249>
2021-05-21 17:03:20 +02:00

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/* GStreamer
* Copyright (C) 2019 OKADA Jun-ichi <okada@abt.jp>
*
* 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.
*/
/* This code captures the screen using "Desktop Duplication API".
* For more information
* https://docs.microsoft.com/en-us/windows/win32/direct3ddxgi/desktop-dup-api */
#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
#define PTR_RELEASE(p) {if(NULL!=(p)){IUnknown_Release((IUnknown *)(p)); (p) = NULL;}}
#define BYTE_PER_PIXEL (4)
/* vertex structures */
typedef struct _vector3d
{
float x;
float y;
float z;
} vector3d;
typedef struct _vector2d
{
float x;
float y;
} vector2d;
typedef struct _vertex
{
vector3d pos;
vector2d texcoord;
} vertex;
#define VERTEX_NUM (6);
typedef struct _DxgiCapture
{
GstDXGIScreenCapSrc *src;
/*Direct3D pointers */
ID3D11Device *d3d11_device;
ID3D11DeviceContext *d3d11_context;
IDXGIOutput1 *dxgi_output1;
IDXGIOutputDuplication *dxgi_dupl;
/* Texture that has been rotated and combined fragments. */
ID3D11Texture2D *work_texture;
D3D11_TEXTURE2D_DESC work_texture_desc;
D3D11_VIEWPORT view_port;
/* Textures that can be read by the CPU.
* CPU-accessible textures are required separately from work_texture
* because shaders cannot be executed. */
ID3D11Texture2D *readable_texture;
ID3D11VertexShader *vertex_shader;
ID3D11PixelShader *pixel_shader;
ID3D11SamplerState *sampler_state;
ID3D11RenderTargetView *target_view;
/* Screen output dimensions and rotation status.
* The texture acquired by AcquireNextFrame has a non-rotated region. */
DXGI_OUTDUPL_DESC dupl_desc;
/* mouse pointer image */
guint8 *pointer_buffer;
gsize pointer_buffer_capacity;
/* The movement rectangular regions and the movement
* destination position from the previous frame. */
DXGI_OUTDUPL_MOVE_RECT *move_rects;
gsize move_rects_capacity;
/* Array of dirty rectangular region for the desktop frame. */
RECT *dirty_rects;
gsize dirty_rects_capacity;
/* Vertex buffer created from array of dirty rectangular region. */
vertex *dirty_verteces;
gsize verteces_capacity;
/* Array of rectangular region to copy to readable_texture. */
RECT *copy_rects;
gsize copy_rects_capacity;
/* latest mouse pointer info */
DXGI_OUTDUPL_POINTER_SHAPE_INFO pointer_shape_info;
DXGI_OUTDUPL_POINTER_POSITION last_pointer_position;
} DxgiCapture;
/* Vertex shader for texture rotation by HLSL. */
static const char STR_VERTEX_SHADER[] =
"struct vs_input { float4 pos : POSITION; float2 tex : TEXCOORD; }; "
"struct vs_output { float4 pos : SV_POSITION; float2 tex : TEXCOORD; }; "
"vs_output vs_main(vs_input input){return input;}";
/* Pixel shader for texture rotation by HLSL. */
static const char STR_PIXEL_SHADER[] =
"Texture2D tx : register( t0 ); "
"SamplerState samp : register( s0 ); "
"struct ps_input { float4 pos : SV_POSITION; float2 tex : TEXCOORD;}; "
"float4 ps_main(ps_input input) : "
"SV_Target{ return tx.Sample( samp, input.tex ); }";
/* initial buffer size */
const int INITIAL_POINTER_BUFFER_CAPACITY = 64 * 64 * BYTE_PER_PIXEL;
const int INITIAL_MOVE_RECTS_CAPACITY = 100;
const int INITIAL_DIRTY_RECTS_CAPACITY = 100;
const int INITIAL_VERTICES_CAPACITY = 100 * VERTEX_NUM;
const int INITIAL_COPY_RECTS_CAPACITY = 100;
static D3D_FEATURE_LEVEL feature_levels[] = {
D3D_FEATURE_LEVEL_11_0,
D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0,
D3D_FEATURE_LEVEL_9_3,
D3D_FEATURE_LEVEL_9_2,
D3D_FEATURE_LEVEL_9_1,
};
static D3D11_INPUT_ELEMENT_DESC vertex_layout[] = {
{"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0,
D3D11_INPUT_PER_VERTEX_DATA, 0},
{"TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA,
0}
};
static void _draw_pointer (DxgiCapture * self, LPBYTE buffer, LPRECT dst_rect,
int stride);
static ID3D11Texture2D *_create_texture (DxgiCapture * self,
enum D3D11_USAGE usage, UINT bindFlags, UINT cpuAccessFlags);
static gboolean _setup_texture (DxgiCapture * self);
static HRESULT _update_work_texture (DxgiCapture * self,
IDXGIResource * desktop_resource);
static HRESULT _copy_dirty_fragment (DxgiCapture * self,
ID3D11Texture2D * src_texture, const D3D11_TEXTURE2D_DESC * src_desc,
guint move_count, guint dirty_count, RECT ** dst_rect);
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 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;
}
static GstFlowReturn
initialize_output_duplication (DxgiCapture * self)
{
HDESK hdesk;
HRESULT hr;
DXGI_OUTDUPL_DESC old_dupl_desc;
GstDXGIScreenCapSrc *src = self->src;
PTR_RELEASE (self->dxgi_dupl);
hdesk = OpenInputDesktop (0, FALSE, GENERIC_ALL);
if (hdesk) {
if (!SetThreadDesktop (hdesk)) {
GST_WARNING_OBJECT (src, "SetThreadDesktop() failed. Error code: %lu",
GetLastError ());
}
CloseDesktop (hdesk);
} else {
GST_WARNING_OBJECT (src, "OpenInputDesktop() failed. Error code: %lu",
GetLastError ());
}
hr = IDXGIOutput1_DuplicateOutput (self->dxgi_output1,
(IUnknown *) (self->d3d11_device), &self->dxgi_dupl);
if (hr != S_OK) {
gchar *msg = get_hresult_to_string (hr);
GST_WARNING_OBJECT (src, "IDXGIOutput1::DuplicateOutput() failed (%x): %s",
(guint) hr, msg);
g_free (msg);
if (hr == E_ACCESSDENIED) {
/* Happens temporarily during resolution changes. */
return GST_FLOW_OK;
}
return GST_FLOW_ERROR;
}
old_dupl_desc = self->dupl_desc;
IDXGIOutputDuplication_GetDesc (self->dxgi_dupl, &self->dupl_desc);
if (self->readable_texture &&
(self->dupl_desc.ModeDesc.Width != old_dupl_desc.ModeDesc.Width ||
self->dupl_desc.ModeDesc.Height != old_dupl_desc.ModeDesc.Height ||
self->dupl_desc.Rotation != old_dupl_desc.Rotation)) {
PTR_RELEASE (self->readable_texture);
PTR_RELEASE (self->work_texture);
_setup_texture (self);
return GST_DXGICAP_FLOW_RESOLUTION_CHANGE;
}
return GST_FLOW_OK;
}
DxgiCapture *
dxgicap_new (HMONITOR monitor, GstDXGIScreenCapSrc * src)
{
int i, j;
HRESULT hr;
IDXGIFactory1 *dxgi_factory1 = NULL;
IDXGIAdapter1 *dxgi_adapter1 = NULL;
ID3D11InputLayout *vertex_input_layout = NULL;
ID3DBlob *vertex_shader_blob = NULL;
ID3DBlob *pixel_shader_blob = NULL;
D3D11_SAMPLER_DESC sampler_desc;
DxgiCapture *self = g_new0 (DxgiCapture, 1);
if (NULL == self) {
return NULL;
}
self->src = src;
hr = CreateDXGIFactory1 (&IID_IDXGIFactory1, (void **) &dxgi_factory1);
HR_FAILED_GOTO (hr, CreateDXGIFactory1, new_error);
for (i = 0;
IDXGIFactory1_EnumAdapters1 (dxgi_factory1, i,
&dxgi_adapter1) != DXGI_ERROR_NOT_FOUND; ++i) {
IDXGIOutput *dxgi_output = NULL;
D3D_FEATURE_LEVEL feature_level;
hr = D3D11CreateDevice ((IDXGIAdapter *) dxgi_adapter1,
D3D_DRIVER_TYPE_UNKNOWN, NULL, 0,
feature_levels, G_N_ELEMENTS (feature_levels),
D3D11_SDK_VERSION, &self->d3d11_device, &feature_level,
&self->d3d11_context);
if (FAILED (hr)) {
HR_FAILED_INFO (hr, D3D11CreateDevice);
PTR_RELEASE (dxgi_adapter1);
continue;
}
for (j = 0; IDXGIAdapter1_EnumOutputs (dxgi_adapter1, j, &dxgi_output) !=
DXGI_ERROR_NOT_FOUND; ++j) {
DXGI_OUTPUT_DESC output_desc;
hr = IDXGIOutput_QueryInterface (dxgi_output, &IID_IDXGIOutput1,
(void **) &self->dxgi_output1);
PTR_RELEASE (dxgi_output);
HR_FAILED_GOTO (hr, IDXGIOutput::QueryInterface, new_error);
hr = IDXGIOutput1_GetDesc (self->dxgi_output1, &output_desc);
HR_FAILED_GOTO (hr, IDXGIOutput1::GetDesc, new_error);
if (output_desc.Monitor == monitor) {
GST_DEBUG_OBJECT (src, "found monitor");
break;
}
PTR_RELEASE (self->dxgi_output1);
}
PTR_RELEASE (dxgi_adapter1);
if (NULL != self->dxgi_output1) {
break;
}
PTR_RELEASE (self->d3d11_device);
PTR_RELEASE (self->d3d11_context);
}
if (NULL == self->dxgi_output1) {
goto new_error;
}
PTR_RELEASE (dxgi_factory1);
if (initialize_output_duplication (self) == GST_FLOW_ERROR) {
goto new_error;
}
self->pointer_buffer_capacity = INITIAL_POINTER_BUFFER_CAPACITY;
self->pointer_buffer = g_malloc (self->pointer_buffer_capacity);
if (NULL == self->pointer_buffer) {
goto new_error;
}
self->move_rects_capacity = INITIAL_MOVE_RECTS_CAPACITY;
self->move_rects = g_new0 (DXGI_OUTDUPL_MOVE_RECT, self->move_rects_capacity);
if (NULL == self->move_rects) {
goto new_error;
}
self->dirty_rects_capacity = INITIAL_DIRTY_RECTS_CAPACITY;
self->dirty_rects = g_new0 (RECT, self->dirty_rects_capacity);
if (NULL == self->dirty_rects) {
goto new_error;
}
self->verteces_capacity = INITIAL_VERTICES_CAPACITY;
self->dirty_verteces = g_new0 (vertex, self->verteces_capacity);
if (NULL == self->dirty_verteces) {
goto new_error;
}
self->copy_rects_capacity = INITIAL_COPY_RECTS_CAPACITY;
self->copy_rects = g_new0 (RECT, self->copy_rects_capacity);
if (NULL == self->copy_rects) {
goto new_error;
}
if (DXGI_MODE_ROTATION_IDENTITY != self->dupl_desc.Rotation) {
g_assert (GstD3DCompileFunc);
/* For a rotated display, create a 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 = 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);
hr = ID3D11Device_CreateVertexShader (self->d3d11_device,
ID3D10Blob_GetBufferPointer (vertex_shader_blob),
ID3D10Blob_GetBufferSize (vertex_shader_blob), NULL,
&self->vertex_shader);
HR_FAILED_GOTO (hr, ID3D11Device::CreateVertexShader, new_error);
hr = ID3D11Device_CreateInputLayout (self->d3d11_device, vertex_layout,
G_N_ELEMENTS (vertex_layout),
ID3D10Blob_GetBufferPointer (vertex_shader_blob),
ID3D10Blob_GetBufferSize (vertex_shader_blob), &vertex_input_layout);
PTR_RELEASE (vertex_shader_blob)
HR_FAILED_GOTO (hr, ID3D11Device::CreateInputLayout, new_error);
ID3D11DeviceContext_IASetInputLayout (self->d3d11_context,
vertex_input_layout);
PTR_RELEASE (vertex_input_layout);
hr = ID3D11Device_CreatePixelShader (self->d3d11_device,
ID3D10Blob_GetBufferPointer (pixel_shader_blob),
ID3D10Blob_GetBufferSize (pixel_shader_blob), NULL,
&self->pixel_shader);
PTR_RELEASE (pixel_shader_blob);
HR_FAILED_GOTO (hr, ID3D11Device::CreatePixelShader, new_error);
memset (&sampler_desc, 0, sizeof (sampler_desc));
sampler_desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
sampler_desc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP;
sampler_desc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP;
sampler_desc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP;
sampler_desc.ComparisonFunc = D3D11_COMPARISON_NEVER;
sampler_desc.MinLOD = 0;
sampler_desc.MaxLOD = D3D11_FLOAT32_MAX;
hr = ID3D11Device_CreateSamplerState (self->d3d11_device, &sampler_desc,
&self->sampler_state);
HR_FAILED_GOTO (hr, ID3D11Device::CreateSamplerState, new_error);
}
return self;
new_error:
PTR_RELEASE (vertex_input_layout);
PTR_RELEASE (vertex_shader_blob);
PTR_RELEASE (pixel_shader_blob);
dxgicap_destory (self);
return NULL;
}
void
dxgicap_destory (DxgiCapture * self)
{
if (!self)
return;
PTR_RELEASE (self->target_view);
PTR_RELEASE (self->readable_texture);
PTR_RELEASE (self->work_texture);
PTR_RELEASE (self->dxgi_output1);
PTR_RELEASE (self->dxgi_dupl);
PTR_RELEASE (self->d3d11_context);
PTR_RELEASE (self->d3d11_device);
PTR_RELEASE (self->vertex_shader);
PTR_RELEASE (self->pixel_shader);
PTR_RELEASE (self->sampler_state);
g_free (self->pointer_buffer);
g_free (self->move_rects);
g_free (self->dirty_rects);
g_free (self->dirty_verteces);
g_free (self->copy_rects);
g_free (self);
}
gboolean
dxgicap_start (DxgiCapture * self)
{
return _setup_texture (self);
}
void
dxgicap_stop (DxgiCapture * self)
{
PTR_RELEASE (self->target_view);
PTR_RELEASE (self->readable_texture);
PTR_RELEASE (self->work_texture);
}
GstFlowReturn
dxgicap_acquire_next_frame (DxgiCapture * self, gboolean show_cursor,
guint timeout)
{
GstFlowReturn ret = GST_FLOW_ERROR;
HRESULT hr;
GstDXGIScreenCapSrc *src = self->src;
DXGI_OUTDUPL_FRAME_INFO frame_info;
IDXGIResource *desktop_resource = NULL;
if (!self->dxgi_dupl) {
/* Desktop duplication interface became invalid due to desktop switch,
* UAC prompt popping up, or similar event. Try to reinitialize. */
ret = initialize_output_duplication (self);
goto end;
}
/* Get the latest desktop frames. */
hr = IDXGIOutputDuplication_AcquireNextFrame (self->dxgi_dupl,
timeout, &frame_info, &desktop_resource);
if (hr == DXGI_ERROR_WAIT_TIMEOUT) {
/* In case of DXGI_ERROR_WAIT_TIMEOUT,
* it has not changed from the last time. */
GST_LOG_OBJECT (src, "DXGI_ERROR_WAIT_TIMEOUT");
ret = GST_FLOW_OK;
goto end;
} else if (hr == DXGI_ERROR_ACCESS_LOST) {
GST_LOG_OBJECT (src, "DXGI_ERROR_ACCESS_LOST; reinitializing output "
"duplication...");
PTR_RELEASE (self->dxgi_dupl);
ret = GST_FLOW_OK;
goto end;
}
HR_FAILED_GOTO (hr, IDXGIOutputDuplication::AcquireNextFrame, end);
if (0 != frame_info.LastPresentTime.QuadPart) {
/* The desktop frame has changed since last time. */
hr = _update_work_texture (self, desktop_resource);
if (FAILED (hr)) {
GST_DEBUG_OBJECT (src, "failed to _update_work_texture");
goto end;
}
}
if (show_cursor && 0 != frame_info.LastMouseUpdateTime.QuadPart) {
/* The mouse pointer has changed since last time. */
self->last_pointer_position = frame_info.PointerPosition;
if (0 < frame_info.PointerShapeBufferSize) {
/* A valid mouse cursor shape exists. */
DXGI_OUTDUPL_POINTER_SHAPE_INFO pointer_shape_info;
guint pointer_shape_size_required;
/* Get the mouse cursor shape. */
hr = IDXGIOutputDuplication_GetFramePointerShape (self->dxgi_dupl,
self->pointer_buffer_capacity,
self->pointer_buffer,
&pointer_shape_size_required, &pointer_shape_info);
if (DXGI_ERROR_MORE_DATA == hr) {
/* not enough buffers */
self->pointer_buffer_capacity = pointer_shape_size_required * 2;
self->pointer_buffer =
g_realloc (self->pointer_buffer, self->pointer_buffer_capacity);
hr = IDXGIOutputDuplication_GetFramePointerShape (self->dxgi_dupl,
self->pointer_buffer_capacity,
self->pointer_buffer,
&pointer_shape_size_required, &pointer_shape_info);
}
HR_FAILED_GOTO (hr, IDXGIOutputDuplication::GetFramePointerShape, end);
self->pointer_shape_info = pointer_shape_info;
ret = GST_FLOW_OK;
} else {
ret = GST_FLOW_OK;
}
} else {
ret = GST_FLOW_OK;
}
end:
if (self->dxgi_dupl) {
IDXGIOutputDuplication_ReleaseFrame (self->dxgi_dupl);
}
PTR_RELEASE (desktop_resource);
return ret;
}
gboolean
dxgicap_copy_buffer (DxgiCapture * self, gboolean show_cursor, LPRECT dst_rect,
GstVideoInfo * video_info, GstBuffer * buf)
{
HRESULT hr;
int i;
GstDXGIScreenCapSrc *src = self->src;
D3D11_MAPPED_SUBRESOURCE readable_map;
GstVideoFrame vframe;
gint height = RECT_HEIGHT ((*dst_rect));
gint width = RECT_WIDTH ((*dst_rect));
if (NULL == self->readable_texture) {
GST_DEBUG_OBJECT (src, "readable_texture is null");
goto flow_error;
}
hr = ID3D11DeviceContext_Map (self->d3d11_context,
(ID3D11Resource *) self->readable_texture, 0,
D3D11_MAP_READ, 0, &readable_map);
HR_FAILED_GOTO (hr, IDXGISurface1::Map, flow_error);
GST_DEBUG_OBJECT (src, "copy size width:%d height:%d", width, height);
/* Copy from readable_texture to GstVideFrame. */
if (gst_video_frame_map (&vframe, video_info, buf, GST_MAP_WRITE)) {
gint line_size;
gint stride_dst;
PBYTE frame_buffer;
PBYTE p_dst;
PBYTE p_src;
frame_buffer = GST_VIDEO_FRAME_PLANE_DATA (&vframe, 0);
p_src = (PBYTE) readable_map.pData +
(dst_rect->top * readable_map.RowPitch) +
(dst_rect->left * BYTE_PER_PIXEL);
p_dst = frame_buffer;
line_size = width * BYTE_PER_PIXEL;
stride_dst = GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, 0);
if (line_size > stride_dst) {
GST_ERROR_OBJECT (src, "not enough stride in video frame");
ID3D11DeviceContext_Unmap (self->d3d11_context,
(ID3D11Resource *) self->readable_texture, 0);
gst_video_frame_unmap (&vframe);
goto flow_error;
}
for (i = 0; i < height; ++i) {
memcpy (p_dst, p_src, line_size);
p_dst += stride_dst;
p_src += readable_map.RowPitch;
}
ID3D11DeviceContext_Unmap (self->d3d11_context,
(ID3D11Resource *) self->readable_texture, 0);
HR_FAILED_GOTO (hr, IDXGISurface1::Unmap, flow_error);
if (show_cursor && self->last_pointer_position.Visible) {
_draw_pointer (self, frame_buffer, dst_rect, stride_dst);
}
gst_video_frame_unmap (&vframe);
return TRUE;
}
flow_error:
return FALSE;
}
static void
_draw_pointer (DxgiCapture * self, PBYTE buffer, LPRECT dst_rect, int stride)
{
RECT pointer_rect;
RECT clip_pointer_rect;
int offset_x;
int offset_y;
PBYTE p_dst;
/* For DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME, halve the height. */
int pointer_height =
(DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME ==
self->pointer_shape_info.Type)
? self->pointer_shape_info.Height / 2 : self->pointer_shape_info.Height;
/* A rectangular area containing the mouse pointer shape */
SetRect (&pointer_rect,
self->last_pointer_position.Position.x,
self->last_pointer_position.Position.y,
self->last_pointer_position.Position.x +
self->pointer_shape_info.Width,
self->last_pointer_position.Position.y + pointer_height);
if (!IntersectRect (&clip_pointer_rect, dst_rect, &pointer_rect)) {
return;
}
/* Draw a pointer if it overlaps the destination rectangle range.
* There are three ways to draw the mouse cursor.
* see https://docs.microsoft.com/ja-jp/windows/win32/api/dxgi1_2/ne-dxgi1_2-dxgi_outdupl_pointer_shape_type */
offset_x = clip_pointer_rect.left - pointer_rect.left;
offset_y = clip_pointer_rect.top - pointer_rect.top;
p_dst =
((PBYTE) buffer) + ((clip_pointer_rect.top -
dst_rect->top) * stride) +
((clip_pointer_rect.left - dst_rect->left) * BYTE_PER_PIXEL);
if (DXGI_OUTDUPL_POINTER_SHAPE_TYPE_COLOR ==
self->pointer_shape_info.Type
|| DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR ==
self->pointer_shape_info.Type) {
gboolean mask_mode =
DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR ==
self->pointer_shape_info.Type;
PBYTE p_src =
(PBYTE) self->pointer_buffer +
(offset_y * self->pointer_shape_info.Pitch) +
(offset_x * BYTE_PER_PIXEL);
int y, x;
for (y = 0; y < RECT_HEIGHT (clip_pointer_rect); ++y) {
for (x = 0; x < RECT_WIDTH (clip_pointer_rect); ++x) {
PBYTE p1 = p_dst + (x * BYTE_PER_PIXEL);
PBYTE p2 = p_src + (x * BYTE_PER_PIXEL);
int alpha = *(p2 + 3);
int i;
for (i = 0; i < 3; ++i) {
if (mask_mode) {
/* case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR:
* If the alpha channel of a pixel in the mouse image is 0, copy it.
* Otherwise, xor each pixel. */
if (0 == alpha) {
*p1 = *p2;
} else {
*p1 = *p2 ^ *p1;
}
} else {
/* case DXGI_OUTDUPL_POINTER_SHAPE_TYPE_COLOR:
* Copies the mouse cursor image with alpha channel composition. */
*p1 = min (255, max (0, *p1 + ((*p2 - *p1) * alpha / 255)));
}
++p1;
++p2;
}
}
p_dst += stride;
p_src += self->pointer_shape_info.Pitch;
}
} else if (DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME ==
self->pointer_shape_info.Type) {
guint mask_bit = 0x80;
/* AND MASK pointer
* It is stored in 1 bit per pixel from the beginning. */
PBYTE p_src_and =
(PBYTE) self->pointer_buffer +
(offset_y * self->pointer_shape_info.Pitch);
/* XOR MASK pointer
* The XOR MASK is stored after the AND mask. */
PBYTE p_src_xor =
(PBYTE) self->pointer_buffer +
((offset_y + pointer_height) * self->pointer_shape_info.Pitch);
int y, x;
for (y = 0; y < RECT_HEIGHT (clip_pointer_rect); ++y) {
guint32 *p_dst_32 = ((guint32 *) (p_dst));
for (x = offset_x; x < RECT_WIDTH (clip_pointer_rect); ++x) {
int bit_pos = x % 8;
gboolean and_bit =
0 != (*(p_src_and + (x / 8)) & (mask_bit >> bit_pos));
gboolean xor_bit =
0 != (*(p_src_xor + (x / 8)) & (mask_bit >> bit_pos));
if (and_bit) {
if (xor_bit) {
*p_dst_32 = *p_dst_32 ^ 0x00ffffff;
}
} else {
if (xor_bit) {
*p_dst_32 = 0xffffffff;
} else {
*p_dst_32 = 0xff000000;
}
}
++p_dst_32;
}
p_dst += stride;
p_src_and += self->pointer_shape_info.Pitch;
p_src_xor += self->pointer_shape_info.Pitch;
}
}
}
static ID3D11Texture2D *
_create_texture (DxgiCapture * self,
enum D3D11_USAGE usage, UINT bindFlags, UINT cpuAccessFlags)
{
HRESULT hr;
GstDXGIScreenCapSrc *src = self->src;
D3D11_TEXTURE2D_DESC new_desc;
ID3D11Texture2D *new_texture = NULL;
ZeroMemory (&new_desc, sizeof (new_desc));
new_desc.Width = self->dupl_desc.ModeDesc.Width;
new_desc.Height = self->dupl_desc.ModeDesc.Height;
new_desc.MipLevels = 1;
new_desc.ArraySize = 1;
new_desc.SampleDesc.Count = 1;
new_desc.SampleDesc.Quality = 0;
new_desc.Usage = usage;
new_desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
new_desc.BindFlags = bindFlags;
new_desc.CPUAccessFlags = cpuAccessFlags;
new_desc.MiscFlags = 0;
hr = ID3D11Device_CreateTexture2D (self->d3d11_device, &new_desc, NULL,
&new_texture);
HR_FAILED_RET (hr, ID3D11Device::CreateTexture2D, NULL);
return new_texture;
}
static gboolean
_setup_texture (DxgiCapture * self)
{
HRESULT hr;
ID3D11Texture2D *new_texture = NULL;
GstDXGIScreenCapSrc *src = self->src;
if (NULL == self->readable_texture) {
new_texture = _create_texture (self, D3D11_USAGE_STAGING, 0,
D3D11_CPU_ACCESS_READ);
if (NULL == new_texture) {
return FALSE;
}
self->readable_texture = new_texture;
}
if (DXGI_MODE_ROTATION_IDENTITY != self->dupl_desc.Rotation) {
/* For rotated displays, create work_texture. */
if (NULL == self->work_texture) {
new_texture =
_create_texture (self, D3D11_USAGE_DEFAULT,
D3D11_BIND_RENDER_TARGET, 0);
if (NULL == new_texture) {
return FALSE;
}
self->work_texture = new_texture;
ID3D11Texture2D_GetDesc (self->work_texture, &self->work_texture_desc);
hr = ID3D11Device_CreateRenderTargetView (self->d3d11_device,
(ID3D11Resource *) self->work_texture, NULL, &self->target_view);
HR_FAILED_RET (hr, ID3D11Device::CreateRenderTargetView, FALSE);
self->view_port.Width = (float) self->work_texture_desc.Width;
self->view_port.Height = (float) self->work_texture_desc.Height;
self->view_port.MinDepth = 0.0f;
self->view_port.MaxDepth = 1.0f;
self->view_port.TopLeftX = 0.0f;
self->view_port.TopLeftY = 0.0f;
}
}
return TRUE;
}
/* Update work_texture to the latest desktop frame from the update information
* that can be obtained from IDXGIOutputDuplication.
* Then copy to readable_texture.
*/
static HRESULT
_update_work_texture (DxgiCapture * self, IDXGIResource * desktop_resource)
{
HRESULT hr = S_OK;
GstDXGIScreenCapSrc *src = self->src;
int i;
ID3D11Texture2D *desktop_texture = NULL;
guint required_size;
guint move_count;
guint dirty_rects_capacity_size;
guint dirty_count;
guint copy_count;
D3D11_TEXTURE2D_DESC src_desc;
RECT *dst_rect;
ID3D11Texture2D *work_src;
guint move_rects_capacity_size =
sizeof (DXGI_OUTDUPL_MOVE_RECT) * self->move_rects_capacity;
hr = IDXGIResource_QueryInterface (desktop_resource, &IID_ID3D11Texture2D,
(void **) &desktop_texture);
HR_FAILED_GOTO (hr, IDXGIResource::QueryInterface, end);
/* Get the rectangular regions that was moved from the last time.
* However, I have never obtained a valid value in GetFrameMoveRects.
* It seems to depend on the implementation of the GPU driver.
* see https://docs.microsoft.com/en-us/windows/win32/api/dxgi1_2/nf-dxgi1_2-idxgioutputduplication-getframemoverects
*/
hr = IDXGIOutputDuplication_GetFrameMoveRects (self->dxgi_dupl,
move_rects_capacity_size, self->move_rects, &required_size);
if (DXGI_ERROR_MORE_DATA == hr) {
/* not enough buffers */
self->move_rects_capacity =
(required_size / sizeof (DXGI_OUTDUPL_MOVE_RECT)) * 2;
self->move_rects =
g_renew (DXGI_OUTDUPL_MOVE_RECT, self->move_rects,
self->move_rects_capacity);
hr = IDXGIOutputDuplication_GetFrameMoveRects (self->dxgi_dupl,
required_size, self->move_rects, &required_size);
}
HR_FAILED_GOTO (hr, IDXGIOutputDuplication::GetFrameMoveRects, end);
move_count = required_size / sizeof (DXGI_OUTDUPL_MOVE_RECT);
dirty_rects_capacity_size = sizeof (RECT) * self->dirty_rects_capacity;
/* Gets the rectangular regions that has changed since the last time.
see https://docs.microsoft.com/en-us/windows/win32/api/dxgi1_2/nf-dxgi1_2-idxgioutputduplication-getframedirtyrects
*/
hr = IDXGIOutputDuplication_GetFrameDirtyRects (self->dxgi_dupl,
dirty_rects_capacity_size, self->dirty_rects, &required_size);
if (DXGI_ERROR_MORE_DATA == hr) {
/* not enough buffers */
self->dirty_rects_capacity = (required_size / sizeof (RECT)) * 2;
self->dirty_rects =
g_renew (RECT, self->dirty_rects, self->dirty_rects_capacity);
hr = IDXGIOutputDuplication_GetFrameDirtyRects (self->dxgi_dupl,
required_size, self->dirty_rects, &required_size);
}
HR_FAILED_GOTO (hr, IDXGIOutputDuplication::GetFrameDirtyRects, end);
dirty_count = required_size / sizeof (RECT);
/* The number of rectangular regions to copy to the readable_texture. */
copy_count = move_count + dirty_count;
if (self->copy_rects_capacity < copy_count) {
/* not enough buffers */
self->copy_rects_capacity = copy_count * 2;
self->copy_rects =
g_renew (RECT, self->copy_rects, self->copy_rects_capacity);
}
if (DXGI_MODE_ROTATION_IDENTITY == self->dupl_desc.Rotation) {
/* For a non-rotating display, copy it directly into readable_texture. */
RECT *p = self->copy_rects;
for (i = 0; i < move_count; ++i) {
*p = self->move_rects[i].DestinationRect;
++p;
}
for (i = 0; i < dirty_count; ++i) {
*p = self->dirty_rects[i];
++p;
}
work_src = desktop_texture;
} else {
/* For rotated displays, rotate to work_texture and copy. */
ID3D11Texture2D_GetDesc (desktop_texture, &src_desc);
dst_rect = self->copy_rects;
/* Copy the dirty rectangular and moved rectangular regions from desktop frame to work_texture. */
hr = _copy_dirty_fragment (self, desktop_texture, &src_desc, move_count,
dirty_count, &dst_rect);
work_src = self->work_texture;
if (FAILED (hr)) {
goto end;
}
}
/* Copy the updated rectangular regions to readable_texture. */
for (i = 0; i < copy_count; ++i) {
RECT *p = (self->copy_rects + i);
D3D11_BOX box;
box.left = p->left;
box.top = p->top;
box.front = 0;
box.right = p->right;
box.bottom = p->bottom;
box.back = 1;
ID3D11DeviceContext_CopySubresourceRegion (self->d3d11_context,
(ID3D11Resource *) self->readable_texture,
0, p->left, p->top, 0, (ID3D11Resource *) work_src, 0, &box);
}
end:
PTR_RELEASE (desktop_texture);
return hr;
}
static void
_rotate_rect (DXGI_MODE_ROTATION rotation, RECT * dst, const RECT * src,
gint dst_width, gint dst_height)
{
switch (rotation) {
case DXGI_MODE_ROTATION_ROTATE90:
dst->left = dst_width - src->bottom;
dst->top = src->left;
dst->right = dst_width - src->top;
dst->bottom = src->right;
break;
case DXGI_MODE_ROTATION_ROTATE180:
dst->left = dst_width - src->right;
dst->top = dst_height - src->bottom;
dst->right = dst_width - src->left;
dst->bottom = dst_height - src->top;
break;
case DXGI_MODE_ROTATION_ROTATE270:
dst->left = src->top;
dst->top = dst_height - src->right;
dst->right = src->bottom;
dst->bottom = dst_height - src->left;
break;
default:
*dst = *src;
break;
}
}
/* Copy the rectangular area specified by dirty_rects and move_rects from src_texture to work_texture. */
static HRESULT
_copy_dirty_fragment (DxgiCapture * self, ID3D11Texture2D * src_texture,
const D3D11_TEXTURE2D_DESC * src_desc, guint move_count, guint dirty_count,
RECT ** dst_rect)
{
HRESULT hr = S_OK;
GstDXGIScreenCapSrc *src = self->src;
int i;
RECT *dst_rect_p;
vertex *vp;
UINT stride;
UINT offset;
guint verteces_count;
ID3D11Buffer *verteces_buffer = NULL;
ID3D11ShaderResourceView *shader_resource = NULL;
D3D11_SUBRESOURCE_DATA subresource_data;
D3D11_BUFFER_DESC buffer_desc;
D3D11_SHADER_RESOURCE_VIEW_DESC shader_desc;
shader_desc.Format = src_desc->Format;
shader_desc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
shader_desc.Texture2D.MostDetailedMip = src_desc->MipLevels - 1;
shader_desc.Texture2D.MipLevels = src_desc->MipLevels;
hr = ID3D11Device_CreateShaderResourceView (self->d3d11_device,
(ID3D11Resource *) src_texture, &shader_desc, &shader_resource);
HR_FAILED_GOTO (hr, ID3D11Device::CreateShaderResourceView, end);
ID3D11DeviceContext_OMSetRenderTargets (self->d3d11_context, 1,
&self->target_view, NULL);
ID3D11DeviceContext_VSSetShader (self->d3d11_context, self->vertex_shader,
NULL, 0);
ID3D11DeviceContext_PSSetShader (self->d3d11_context, self->pixel_shader,
NULL, 0);
ID3D11DeviceContext_PSSetShaderResources (self->d3d11_context, 0, 1,
&shader_resource);
ID3D11DeviceContext_PSSetSamplers (self->d3d11_context, 0, 1,
&self->sampler_state);
ID3D11DeviceContext_IASetPrimitiveTopology (self->d3d11_context,
D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
verteces_count = (move_count + dirty_count) * VERTEX_NUM;
if (verteces_count > self->verteces_capacity) {
/* not enough buffers */
self->verteces_capacity = verteces_count * 2;
self->dirty_verteces =
g_renew (vertex, self->dirty_verteces, self->verteces_capacity);
if (NULL == self->dirty_verteces) {
hr = S_FALSE;
goto end;
}
}
dst_rect_p = *dst_rect;
vp = self->dirty_verteces;
/* Create a vertex buffer to move and rotate from the move_rects.
* And set the rectangular region to be copied to readable_texture. */
for (i = 0; i < move_count; ++i) {
/* Copy the area to be moved.
* The source of the move is included in dirty_rects. */
_set_verteces (self, vp, dst_rect_p, &self->work_texture_desc,
&(self->move_rects[i].DestinationRect), src_desc);
vp += VERTEX_NUM;
++dst_rect_p;
}
/* Create a vertex buffer to move and rotate from the dirty_rects.
* And set the rectangular region to be copied to readable_texture. */
for (i = 0; i < dirty_count; ++i) {
_set_verteces (self, vp, dst_rect_p, &self->work_texture_desc,
&(self->dirty_rects[i]), src_desc);
vp += VERTEX_NUM;
++dst_rect_p;
}
*dst_rect = dst_rect_p;
memset (&buffer_desc, 0, sizeof (buffer_desc));
buffer_desc.Usage = D3D11_USAGE_IMMUTABLE;
buffer_desc.ByteWidth = verteces_count * sizeof (vertex);
buffer_desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
buffer_desc.CPUAccessFlags = 0;
memset (&subresource_data, 0, sizeof (subresource_data));
subresource_data.pSysMem = self->dirty_verteces;
hr = ID3D11Device_CreateBuffer (self->d3d11_device, &buffer_desc,
&subresource_data, &verteces_buffer);
HR_FAILED_GOTO (hr, ID3D11Device::CreateBuffer, end);
stride = sizeof (vertex);
offset = 0;
ID3D11DeviceContext_IASetVertexBuffers (self->d3d11_context, 0, 1,
&verteces_buffer, &stride, &offset);
ID3D11DeviceContext_RSSetViewports (self->d3d11_context, 1, &self->view_port);
/* Copy the rectangular region indicated by dirty_rects from the desktop frame to work_texture. */
ID3D11DeviceContext_Draw (self->d3d11_context, verteces_count, 0);
end:
PTR_RELEASE (verteces_buffer);
PTR_RELEASE (shader_resource);
return hr;
}
static void
_set_verteces (DxgiCapture * self, vertex * verteces, RECT * dst_rect,
const D3D11_TEXTURE2D_DESC * dst_desc, RECT * rect,
const D3D11_TEXTURE2D_DESC * src_desc)
{
int center_x;
int center_y;
/* Rectangular area is moved according to the rotation of the display. */
_rotate_rect (self->dupl_desc.Rotation, dst_rect, rect, dst_desc->Width,
dst_desc->Height);
/* Set the vertex buffer from the rotation of the display. */
switch (self->dupl_desc.Rotation) {
case DXGI_MODE_ROTATION_ROTATE90:
verteces[0].texcoord = (vector2d) {
(float) rect->right / (float) src_desc->Width,
(float) rect->bottom / (float) src_desc->Height};
verteces[1].texcoord = (vector2d) {
(float) rect->left / (float) src_desc->Width,
(float) rect->bottom / (float) src_desc->Height};
verteces[2].texcoord = (vector2d) {
(float) rect->right / (float) src_desc->Width,
(float) rect->top / (float) src_desc->Height};
verteces[5].texcoord = (vector2d) {
(float) rect->left / (float) src_desc->Width,
(float) rect->top / (float) src_desc->Height};
break;
case DXGI_MODE_ROTATION_ROTATE180:
verteces[0].texcoord = (vector2d) {
(float) rect->right / (float) src_desc->Width,
(float) rect->top / (float) src_desc->Height};
verteces[1].texcoord = (vector2d) {
(float) rect->right / (float) src_desc->Width,
(float) rect->bottom / (float) src_desc->Height};
verteces[2].texcoord = (vector2d) {
(float) rect->left / (float) src_desc->Width,
(float) rect->top / (float) src_desc->Height};
verteces[5].texcoord = (vector2d) {
(float) rect->left / (float) src_desc->Width,
(float) rect->bottom / (float) src_desc->Height};
break;
case DXGI_MODE_ROTATION_ROTATE270:
verteces[0].texcoord = (vector2d) {
(float) rect->left / (float) src_desc->Width,
(float) rect->top / (float) src_desc->Height};
verteces[1].texcoord = (vector2d) {
(float) rect->right / (float) src_desc->Width,
(float) rect->top / (float) src_desc->Height};
verteces[2].texcoord = (vector2d) {
(float) rect->left / (float) src_desc->Width,
(float) rect->bottom / (float) src_desc->Height};
verteces[5].texcoord = (vector2d) {
(float) rect->right / (float) src_desc->Width,
(float) rect->bottom / (float) src_desc->Height};
break;
default:
verteces[0].texcoord = (vector2d) {
(float) rect->left / (float) src_desc->Width,
(float) rect->bottom / (float) src_desc->Height};
verteces[1].texcoord = (vector2d) {
(float) rect->left / (float) src_desc->Width,
(float) rect->top / (float) src_desc->Height};
verteces[2].texcoord = (vector2d) {
(float) rect->right / (float) src_desc->Width,
(float) rect->bottom / (float) src_desc->Height};
verteces[5].texcoord = (vector2d) {
(float) rect->right / (float) src_desc->Width,
(float) rect->top / (float) src_desc->Height};
break;
}
verteces[3].texcoord = verteces[2].texcoord;
verteces[4].texcoord = verteces[1].texcoord;
center_x = (int) dst_desc->Width / 2;
center_y = (int) dst_desc->Height / 2;
verteces[0].pos = (vector3d) {
(float) (dst_rect->left - center_x) / (float) center_x,
(float) (dst_rect->bottom - center_y) / (float) center_y *-1.0f, 0.0f};
verteces[1].pos = (vector3d) {
(float) (dst_rect->left - center_x) / (float) center_x,
(float) (dst_rect->top - center_y) / (float) center_y *-1.0f, 0.0f};
verteces[2].pos = (vector3d) {
(float) (dst_rect->right - center_x) / (float) center_x,
(float) (dst_rect->bottom - center_y) / (float) center_y *-1.0f, 0.0f};
verteces[3].pos = verteces[2].pos;
verteces[4].pos = verteces[1].pos;
verteces[5].pos = (vector3d) {
(float) (dst_rect->right - center_x) / (float) center_x,
(float) (dst_rect->top - center_y) / (float) center_y *-1.0f, 0.0f};
}
typedef struct _monitor_param_by_name
{
const gchar *device_name;
HMONITOR hmonitor;
} monitor_param_by_name;
static BOOL CALLBACK
monitor_enum_proc_by_name (HMONITOR hmonitor, HDC hdc, LPRECT rect,
LPARAM lparam)
{
MONITORINFOEXA monitor_info;
monitor_param_by_name *param = (monitor_param_by_name *) lparam;
monitor_info.cbSize = sizeof (monitor_info);
if (GetMonitorInfoA (hmonitor, (MONITORINFO *) & monitor_info)) {
if (0 == g_strcmp0 (monitor_info.szDevice, param->device_name)) {
param->hmonitor = hmonitor;
return FALSE;
}
}
return TRUE;
}
HMONITOR
get_hmonitor_by_device_name (const gchar * device_name)
{
monitor_param_by_name monitor = { device_name, NULL, };
EnumDisplayMonitors (NULL, NULL, monitor_enum_proc_by_name,
(LPARAM) & monitor);
return monitor.hmonitor;
}
static BOOL CALLBACK
monitor_enum_proc_primary (HMONITOR hmonitor, HDC hdc, LPRECT rect,
LPARAM lparam)
{
MONITORINFOEXA monitor_info;
monitor_param_by_name *param = (monitor_param_by_name *) lparam;
monitor_info.cbSize = sizeof (monitor_info);
if (GetMonitorInfoA (hmonitor, (MONITORINFO *) & monitor_info)) {
if (MONITORINFOF_PRIMARY == monitor_info.dwFlags) {
param->hmonitor = hmonitor;
return FALSE;
}
}
return TRUE;
}
HMONITOR
get_hmonitor_primary (void)
{
monitor_param_by_name monitor = { NULL, NULL, };
EnumDisplayMonitors (NULL, NULL, monitor_enum_proc_primary,
(LPARAM) & monitor);
return monitor.hmonitor;
}
typedef struct _monitor_param_by_index
{
int target;
int counter;
HMONITOR hmonitor;
} monitor_param_by_index;
static BOOL CALLBACK
monitor_enum_proc_by_index (HMONITOR hmonitor, HDC hdc, LPRECT rect,
LPARAM lparam)
{
MONITORINFOEXA monitor_info;
monitor_param_by_index *param = (monitor_param_by_index *) lparam;
monitor_info.cbSize = sizeof (monitor_info);
if (GetMonitorInfoA (hmonitor, (MONITORINFO *) & monitor_info)) {
if (param->target == param->counter) {
param->hmonitor = hmonitor;
return FALSE;
}
}
++param->counter;
return TRUE;
}
HMONITOR
get_hmonitor_by_index (int index)
{
monitor_param_by_index monitor = { index, 0, NULL, };
EnumDisplayMonitors (NULL, NULL, monitor_enum_proc_by_index,
(LPARAM) & monitor);
return monitor.hmonitor;
}
gboolean
get_monitor_physical_size (HMONITOR hmonitor, LPRECT rect)
{
MONITORINFOEXW monitor_info;
DEVMODEW dev_mode;
monitor_info.cbSize = sizeof (monitor_info);
if (!GetMonitorInfoW (hmonitor, (LPMONITORINFO) & monitor_info)) {
return FALSE;
}
dev_mode.dmSize = sizeof (dev_mode);
dev_mode.dmDriverExtra = sizeof (POINTL);
dev_mode.dmFields = DM_POSITION;
if (!EnumDisplaySettingsW
(monitor_info.szDevice, ENUM_CURRENT_SETTINGS, &dev_mode)) {
return FALSE;
}
SetRect (rect, 0, 0, dev_mode.dmPelsWidth, dev_mode.dmPelsHeight);
return TRUE;
}
static const gchar *
_hresult_to_string_fallback (HRESULT hr)
{
const gchar *s = "unknown error";
switch (hr) {
case DXGI_ERROR_ACCESS_DENIED:
s = "DXGI_ERROR_ACCESS_DENIED";
break;
case DXGI_ERROR_ACCESS_LOST:
s = "DXGI_ERROR_ACCESS_LOST";
break;
case DXGI_ERROR_CANNOT_PROTECT_CONTENT:
s = "DXGI_ERROR_CANNOT_PROTECT_CONTENT";
break;
case DXGI_ERROR_DEVICE_HUNG:
s = "DXGI_ERROR_DEVICE_HUNG";
break;
case DXGI_ERROR_DEVICE_REMOVED:
s = "DXGI_ERROR_DEVICE_REMOVED";
break;
case DXGI_ERROR_DEVICE_RESET:
s = "DXGI_ERROR_DEVICE_RESET";
break;
case DXGI_ERROR_DRIVER_INTERNAL_ERROR:
s = "DXGI_ERROR_DRIVER_INTERNAL_ERROR";
break;
case DXGI_ERROR_FRAME_STATISTICS_DISJOINT:
s = "DXGI_ERROR_FRAME_STATISTICS_DISJOINT";
break;
case DXGI_ERROR_GRAPHICS_VIDPN_SOURCE_IN_USE:
s = "DXGI_ERROR_GRAPHICS_VIDPN_SOURCE_IN_USE";
break;
case DXGI_ERROR_INVALID_CALL:
s = "DXGI_ERROR_INVALID_CALL";
break;
case DXGI_ERROR_MORE_DATA:
s = "DXGI_ERROR_MORE_DATA";
break;
case DXGI_ERROR_NAME_ALREADY_EXISTS:
s = "DXGI_ERROR_NAME_ALREADY_EXISTS";
break;
case DXGI_ERROR_NONEXCLUSIVE:
s = "DXGI_ERROR_NONEXCLUSIVE";
break;
case DXGI_ERROR_NOT_CURRENTLY_AVAILABLE:
s = "DXGI_ERROR_NOT_CURRENTLY_AVAILABLE";
break;
case DXGI_ERROR_NOT_FOUND:
s = "DXGI_ERROR_NOT_FOUND";
break;
case DXGI_ERROR_REMOTE_CLIENT_DISCONNECTED:
s = "DXGI_ERROR_REMOTE_CLIENT_DISCONNECTED";
break;
case DXGI_ERROR_REMOTE_OUTOFMEMORY:
s = "DXGI_ERROR_REMOTE_OUTOFMEMORY";
break;
case DXGI_ERROR_RESTRICT_TO_OUTPUT_STALE:
s = "DXGI_ERROR_RESTRICT_TO_OUTPUT_STALE";
break;
case DXGI_ERROR_SDK_COMPONENT_MISSING:
s = "DXGI_ERROR_SDK_COMPONENT_MISSING";
break;
case DXGI_ERROR_SESSION_DISCONNECTED:
s = "DXGI_ERROR_SESSION_DISCONNECTED";
break;
case DXGI_ERROR_UNSUPPORTED:
s = "DXGI_ERROR_UNSUPPORTED";
break;
case DXGI_ERROR_WAIT_TIMEOUT:
s = "DXGI_ERROR_WAIT_TIMEOUT";
break;
case DXGI_ERROR_WAS_STILL_DRAWING:
s = "DXGI_ERROR_WAS_STILL_DRAWING";
break;
case E_FAIL:
s = "E_FAIL";
break;
case E_OUTOFMEMORY:
s = "E_OUTOFMEMORY";
break;
case E_NOTIMPL:
s = "E_NOTIMPL";
break;
case E_ACCESSDENIED:
s = "E_ACCESSDENIED";
break;
case E_POINTER:
s = "E_POINTER";
break;
case E_INVALIDARG:
s = "E_INVALIDARG";
break;
#if defined(_MSC_VER) && (_MSC_VER >= 1800)
case DXGI_ERROR_ALREADY_EXISTS:
s = "DXGI_ERROR_ALREADY_EXISTS";
break;
case D3D11_ERROR_FILE_NOT_FOUND:
s = "D3D11_ERROR_FILE_NOT_FOUND";
break;
case D3D11_ERROR_TOO_MANY_UNIQUE_STATE_OBJECTS:
s = "D3D11_ERROR_TOO_MANY_UNIQUE_STATE_OBJECTS";
break;
case D3D11_ERROR_TOO_MANY_UNIQUE_VIEW_OBJECTS:
s = "D3D11_ERROR_TOO_MANY_UNIQUE_VIEW_OBJECTS";
break;
case D3D11_ERROR_DEFERRED_CONTEXT_MAP_WITHOUT_INITIAL_DISCARD:
s = "D3D11_ERROR_DEFERRED_CONTEXT_MAP_WITHOUT_INITIAL_DISCARD";
break;
#endif
}
return s;
}
gchar *
get_hresult_to_string (HRESULT hr)
{
gchar *error_text = NULL;
error_text = g_win32_error_message ((gint) hr);
/* g_win32_error_message() doesn't cover all HERESULT return code,
* so it could be empty string, or null if there was an error
* in g_utf16_to_utf8() */
if (!error_text || strlen (error_text) == 0) {
g_free (error_text);
error_text = g_strdup (_hresult_to_string_fallback (hr));
}
return error_text;
}
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