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FFmpeg/libavfilter/vsrc_ddagrab.c
Andreas Rheinhardt 790f793844 avutil/common: Don't auto-include mem.h 
There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.

Keep it for external users in order to not cause breakages.

Also improve the other headers a bit while just at it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-31 00:08:43 +01:00

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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0A00
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0A00
#endif
#include <windows.h>
#define COBJMACROS
#include <initguid.h>
#include <d3d11.h>
#include <dxgi1_2.h>
#if HAVE_IDXGIOUTPUT5
#include <dxgi1_5.h>
#endif
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/time.h"
#include "libavutil/avstring.h"
#include "libavutil/avassert.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_d3d11va.h"
#include "compat/w32dlfcn.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
#include "vsrc_ddagrab_shaders.h"
// avutil/time.h takes and returns time in microseconds
#define TIMER_RES 1000000
#define TIMER_RES64 INT64_C(1000000)
typedef struct DdagrabContext {
const AVClass *class;
AVBufferRef *device_ref;
AVHWDeviceContext *device_ctx;
AVD3D11VADeviceContext *device_hwctx;
AVBufferRef *frames_ref;
AVHWFramesContext *frames_ctx;
AVD3D11VAFramesContext *frames_hwctx;
DXGI_OUTPUT_DESC output_desc;
IDXGIOutputDuplication *dxgi_outdupl;
AVFrame *last_frame;
int mouse_x, mouse_y;
ID3D11Texture2D *mouse_texture;
ID3D11ShaderResourceView* mouse_resource_view;
ID3D11Texture2D *mouse_xor_texture;
ID3D11ShaderResourceView* mouse_xor_resource_view;
AVRational time_base;
int64_t time_frame;
int64_t time_timeout;
int64_t first_pts;
DXGI_FORMAT raw_format;
int raw_width;
int raw_height;
ID3D11Texture2D *probed_texture;
ID3D11Texture2D *buffer_texture;
ID3D11VertexShader *vertex_shader;
ID3D11InputLayout *input_layout;
ID3D11PixelShader *pixel_shader;
ID3D11Buffer *const_buffer;
ID3D11SamplerState *sampler_state;
ID3D11BlendState *blend_state;
ID3D11BlendState *blend_state_xor;
int output_idx;
int draw_mouse;
AVRational framerate;
int width;
int height;
int offset_x;
int offset_y;
int out_fmt;
int allow_fallback;
int force_fmt;
int dup_frames;
} DdagrabContext;
#define OFFSET(x) offsetof(DdagrabContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
static const AVOption ddagrab_options[] = {
{ "output_idx", "dda output index to capture", OFFSET(output_idx), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
{ "draw_mouse", "draw the mouse pointer", OFFSET(draw_mouse), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ "framerate", "set video frame rate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, { .str = "30" }, 0, INT_MAX, FLAGS },
{ "video_size", "set video frame size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, 0, FLAGS },
{ "offset_x", "capture area x offset", OFFSET(offset_x), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS },
{ "offset_y", "capture area y offset", OFFSET(offset_y), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS },
{ "output_fmt", "desired output format", OFFSET(out_fmt), AV_OPT_TYPE_INT, { .i64 = DXGI_FORMAT_B8G8R8A8_UNORM }, 0, INT_MAX, FLAGS, .unit = "output_fmt" },
{ "auto", "let dda pick its preferred format", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, INT_MAX, FLAGS, .unit = "output_fmt" },
{ "8bit", "only output default 8 Bit format", 0, AV_OPT_TYPE_CONST, { .i64 = DXGI_FORMAT_B8G8R8A8_UNORM }, 0, INT_MAX, FLAGS, .unit = "output_fmt" },
{ "bgra", "only output 8 Bit BGRA", 0, AV_OPT_TYPE_CONST, { .i64 = DXGI_FORMAT_B8G8R8A8_UNORM }, 0, INT_MAX, FLAGS, .unit = "output_fmt" },
{ "10bit", "only output default 10 Bit format", 0, AV_OPT_TYPE_CONST, { .i64 = DXGI_FORMAT_R10G10B10A2_UNORM }, 0, INT_MAX, FLAGS, .unit = "output_fmt" },
{ "x2bgr10", "only output 10 Bit X2BGR10", 0, AV_OPT_TYPE_CONST, { .i64 = DXGI_FORMAT_R10G10B10A2_UNORM }, 0, INT_MAX, FLAGS, .unit = "output_fmt" },
{ "16bit", "only output default 16 Bit format", 0, AV_OPT_TYPE_CONST, { .i64 = DXGI_FORMAT_R16G16B16A16_FLOAT },0, INT_MAX, FLAGS, .unit = "output_fmt" },
{ "rgbaf16", "only output 16 Bit RGBAF16", 0, AV_OPT_TYPE_CONST, { .i64 = DXGI_FORMAT_R16G16B16A16_FLOAT },0, INT_MAX, FLAGS, .unit = "output_fmt" },
{ "allow_fallback", "don't error on fallback to default 8 Bit format",
OFFSET(allow_fallback), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "force_fmt", "exclude BGRA from format list (experimental, discouraged by Microsoft)",
OFFSET(force_fmt), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "dup_frames", "duplicate frames to maintain framerate",
OFFSET(dup_frames), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(ddagrab);
static inline void release_resource(void *resource)
{
IUnknown **resp = (IUnknown**)resource;
if (*resp) {
IUnknown_Release(*resp);
*resp = NULL;
}
}
static av_cold void ddagrab_uninit(AVFilterContext *avctx)
{
DdagrabContext *dda = avctx->priv;
release_resource(&dda->blend_state);
release_resource(&dda->blend_state_xor);
release_resource(&dda->sampler_state);
release_resource(&dda->pixel_shader);
release_resource(&dda->input_layout);
release_resource(&dda->vertex_shader);
release_resource(&dda->const_buffer);
release_resource(&dda->probed_texture);
release_resource(&dda->buffer_texture);
release_resource(&dda->dxgi_outdupl);
release_resource(&dda->mouse_resource_view);
release_resource(&dda->mouse_texture);
release_resource(&dda->mouse_xor_resource_view);
release_resource(&dda->mouse_xor_texture);
av_frame_free(&dda->last_frame);
av_buffer_unref(&dda->frames_ref);
av_buffer_unref(&dda->device_ref);
}
static av_cold int init_dxgi_dda(AVFilterContext *avctx)
{
DdagrabContext *dda = avctx->priv;
IDXGIDevice *dxgi_device = NULL;
IDXGIAdapter *dxgi_adapter = NULL;
IDXGIOutput *dxgi_output = NULL;
IDXGIOutput1 *dxgi_output1 = NULL;
#if HAVE_IDXGIOUTPUT5 && HAVE_DPI_AWARENESS_CONTEXT
IDXGIOutput5 *dxgi_output5 = NULL;
typedef DPI_AWARENESS_CONTEXT (*set_thread_dpi_t)(DPI_AWARENESS_CONTEXT);
set_thread_dpi_t set_thread_dpi;
HMODULE user32_module;
#endif
int w, h;
HRESULT hr;
hr = ID3D11Device_QueryInterface(dda->device_hwctx->device, &IID_IDXGIDevice, (void**)&dxgi_device);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed querying IDXGIDevice\n");
return AVERROR_EXTERNAL;
}
hr = IDXGIDevice_GetParent(dxgi_device, &IID_IDXGIAdapter, (void**)&dxgi_adapter);
IDXGIDevice_Release(dxgi_device);
dxgi_device = NULL;
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed getting parent IDXGIAdapter\n");
return AVERROR_EXTERNAL;
}
hr = IDXGIAdapter_EnumOutputs(dxgi_adapter, dda->output_idx, &dxgi_output);
IDXGIAdapter_Release(dxgi_adapter);
dxgi_adapter = NULL;
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed to enumerate DXGI output %d\n", dda->output_idx);
return AVERROR_EXTERNAL;
}
hr = IDXGIOutput_GetDesc(dxgi_output, &dda->output_desc);
if (FAILED(hr)) {
IDXGIOutput_Release(dxgi_output);
av_log(avctx, AV_LOG_ERROR, "Failed getting output description\n");
return AVERROR_EXTERNAL;
}
#if HAVE_IDXGIOUTPUT5 && HAVE_DPI_AWARENESS_CONTEXT
user32_module = dlopen("user32.dll", 0);
if (!user32_module) {
av_log(avctx, AV_LOG_ERROR, "Failed loading user32.dll\n");
return AVERROR_EXTERNAL;
}
set_thread_dpi = (set_thread_dpi_t)dlsym(user32_module, "SetThreadDpiAwarenessContext");
if (set_thread_dpi)
hr = IDXGIOutput_QueryInterface(dxgi_output, &IID_IDXGIOutput5, (void**)&dxgi_output5);
if (set_thread_dpi && SUCCEEDED(hr)) {
DPI_AWARENESS_CONTEXT prev_dpi_ctx;
DXGI_FORMAT formats[] = {
DXGI_FORMAT_R16G16B16A16_FLOAT,
DXGI_FORMAT_R10G10B10A2_UNORM,
DXGI_FORMAT_B8G8R8A8_UNORM
};
int nb_formats = FF_ARRAY_ELEMS(formats);
if(dda->out_fmt == DXGI_FORMAT_B8G8R8A8_UNORM) {
formats[0] = DXGI_FORMAT_B8G8R8A8_UNORM;
nb_formats = 1;
} else if (dda->out_fmt) {
formats[0] = dda->out_fmt;
formats[1] = DXGI_FORMAT_B8G8R8A8_UNORM;
nb_formats = dda->force_fmt ? 1 : 2;
}
IDXGIOutput_Release(dxgi_output);
dxgi_output = NULL;
prev_dpi_ctx = set_thread_dpi(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
if (!prev_dpi_ctx)
av_log(avctx, AV_LOG_WARNING, "Failed enabling DPI awareness for DDA\n");
hr = IDXGIOutput5_DuplicateOutput1(dxgi_output5,
(IUnknown*)dda->device_hwctx->device,
0,
nb_formats,
formats,
&dda->dxgi_outdupl);
IDXGIOutput5_Release(dxgi_output5);
dxgi_output5 = NULL;
if (prev_dpi_ctx)
set_thread_dpi(prev_dpi_ctx);
dlclose(user32_module);
user32_module = NULL;
set_thread_dpi = NULL;
av_log(avctx, AV_LOG_DEBUG, "Using IDXGIOutput5 interface\n");
} else {
dlclose(user32_module);
user32_module = NULL;
set_thread_dpi = NULL;
av_log(avctx, AV_LOG_DEBUG, "Falling back to IDXGIOutput1\n");
#else
{
#endif
if (dda->out_fmt && dda->out_fmt != DXGI_FORMAT_B8G8R8A8_UNORM && (!dda->allow_fallback || dda->force_fmt)) {
av_log(avctx, AV_LOG_ERROR, "Only 8 bit output supported with legacy API\n");
return AVERROR(ENOTSUP);
}
hr = IDXGIOutput_QueryInterface(dxgi_output, &IID_IDXGIOutput1, (void**)&dxgi_output1);
IDXGIOutput_Release(dxgi_output);
dxgi_output = NULL;
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed querying IDXGIOutput1\n");
return AVERROR_EXTERNAL;
}
hr = IDXGIOutput1_DuplicateOutput(dxgi_output1,
(IUnknown*)dda->device_hwctx->device,
&dda->dxgi_outdupl);
IDXGIOutput1_Release(dxgi_output1);
dxgi_output1 = NULL;
}
if (hr == DXGI_ERROR_NOT_CURRENTLY_AVAILABLE) {
av_log(avctx, AV_LOG_ERROR, "Too many open duplication sessions\n");
return AVERROR(EBUSY);
} else if (hr == DXGI_ERROR_UNSUPPORTED) {
av_log(avctx, AV_LOG_ERROR, "Selected output not supported\n");
return AVERROR_EXTERNAL;
} else if (hr == E_INVALIDARG) {
av_log(avctx, AV_LOG_ERROR, "Invalid output duplication argument\n");
return AVERROR(EINVAL);
} else if (hr == E_ACCESSDENIED) {
av_log(avctx, AV_LOG_ERROR, "Desktop duplication access denied\n");
return AVERROR(EPERM);
} else if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed duplicating output\n");
return AVERROR_EXTERNAL;
}
w = dda->output_desc.DesktopCoordinates.right - dda->output_desc.DesktopCoordinates.left;
h = dda->output_desc.DesktopCoordinates.bottom - dda->output_desc.DesktopCoordinates.top;
av_log(avctx, AV_LOG_VERBOSE, "Opened dxgi output %d with dimensions %dx%d\n", dda->output_idx, w, h);
return 0;
}
typedef struct ConstBufferData
{
float width;
float height;
uint64_t padding;
} ConstBufferData;
static const D3D11_INPUT_ELEMENT_DESC vertex_shader_input_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 av_cold int init_render_resources(AVFilterContext *avctx)
{
DdagrabContext *dda = avctx->priv;
ID3D11Device *dev = dda->device_hwctx->device;
D3D11_SAMPLER_DESC sampler_desc = { 0 };
D3D11_BLEND_DESC blend_desc = { 0 };
D3D11_BUFFER_DESC buffer_desc = { 0 };
D3D11_SUBRESOURCE_DATA buffer_data = { 0 };
ConstBufferData const_data = { 0 };
HRESULT hr;
hr = ID3D11Device_CreateVertexShader(dev,
vertex_shader_bytes,
FF_ARRAY_ELEMS(vertex_shader_bytes),
NULL,
&dda->vertex_shader);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreateVertexShader failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
hr = ID3D11Device_CreateInputLayout(dev,
vertex_shader_input_layout,
FF_ARRAY_ELEMS(vertex_shader_input_layout),
vertex_shader_bytes,
FF_ARRAY_ELEMS(vertex_shader_bytes),
&dda->input_layout);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreateInputLayout failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
hr = ID3D11Device_CreatePixelShader(dev,
pixel_shader_bytes,
FF_ARRAY_ELEMS(pixel_shader_bytes),
NULL,
&dda->pixel_shader);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreatePixelShader failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
const_data = (ConstBufferData){ dda->width, dda->height };
buffer_data.pSysMem = &const_data;
buffer_desc.ByteWidth = sizeof(const_data);
buffer_desc.Usage = D3D11_USAGE_IMMUTABLE;
buffer_desc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
hr = ID3D11Device_CreateBuffer(dev,
&buffer_desc,
&buffer_data,
&dda->const_buffer);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreateBuffer const buffer failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
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;
hr = ID3D11Device_CreateSamplerState(dev,
&sampler_desc,
&dda->sampler_state);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreateSamplerState failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
blend_desc.AlphaToCoverageEnable = FALSE;
blend_desc.IndependentBlendEnable = FALSE;
blend_desc.RenderTarget[0].BlendEnable = TRUE;
blend_desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
blend_desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
blend_desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
blend_desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_ONE;
blend_desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO;
blend_desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
blend_desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
hr = ID3D11Device_CreateBlendState(dev,
&blend_desc,
&dda->blend_state);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreateBlendState failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
blend_desc.RenderTarget[0].SrcBlend = D3D11_BLEND_INV_DEST_COLOR;
blend_desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_COLOR;
hr = ID3D11Device_CreateBlendState(dev,
&blend_desc,
&dda->blend_state_xor);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreateBlendState (xor) failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
return 0;
}
static av_cold int ddagrab_init(AVFilterContext *avctx)
{
DdagrabContext *dda = avctx->priv;
dda->last_frame = av_frame_alloc();
if (!dda->last_frame)
return AVERROR(ENOMEM);
dda->mouse_x = -1;
dda->mouse_y = -1;
return 0;
}
static int create_d3d11_pointer_tex(AVFilterContext *avctx,
uint8_t *buf,
DXGI_OUTDUPL_POINTER_SHAPE_INFO *shape_info,
ID3D11Texture2D **out_tex,
ID3D11ShaderResourceView **res_view)
{
DdagrabContext *dda = avctx->priv;
D3D11_TEXTURE2D_DESC desc = { 0 };
D3D11_SUBRESOURCE_DATA init_data = { 0 };
D3D11_SHADER_RESOURCE_VIEW_DESC resource_desc = { 0 };
HRESULT hr;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
desc.Usage = D3D11_USAGE_IMMUTABLE;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.Width = shape_info->Width;
desc.Height = shape_info->Height;
init_data.pSysMem = buf;
init_data.SysMemPitch = shape_info->Pitch;
resource_desc.Format = desc.Format;
resource_desc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
resource_desc.Texture2D.MostDetailedMip = 0;
resource_desc.Texture2D.MipLevels = 1;
hr = ID3D11Device_CreateTexture2D(dda->device_hwctx->device,
&desc,
&init_data,
out_tex);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "Failed creating pointer texture\n");
return AVERROR_EXTERNAL;
}
hr = ID3D11Device_CreateShaderResourceView(dda->device_hwctx->device,
(ID3D11Resource*)*out_tex,
&resource_desc,
res_view);
if (FAILED(hr)) {
release_resource(out_tex);
av_log(avctx, AV_LOG_ERROR, "CreateShaderResourceView for mouse failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
return 0;
}
static int convert_mono_buffer(uint8_t *input, uint8_t **rgba_out, uint8_t **xor_out, int *_width, int *_height, int *_pitch)
{
int width = *_width, height = *_height, pitch = *_pitch;
int real_height = height / 2;
int size = real_height * pitch;
uint8_t *output = av_malloc(real_height * width * 4);
uint8_t *output_xor = av_malloc(real_height * width * 4);
int y, x;
if (!output || !output_xor) {
av_free(output);
av_free(output_xor);
return AVERROR(ENOMEM);
}
for (y = 0; y < real_height; y++) {
for (x = 0; x < width; x++) {
int in_pos = (y * pitch) + (x / 8);
int out_pos = 4 * ((y * width) + x);
int and_val = (input[in_pos] >> (7 - (x % 8))) & 1;
int xor_val = (input[in_pos + size] >> (7 - (x % 8))) & 1;
if (!and_val && !xor_val) {
// solid black
memset(&output[out_pos], 0, 4);
output[out_pos + 3] = 0xFF;
// transparent
memset(&output_xor[out_pos], 0, 4);
} else if (and_val && !xor_val) {
// transparent
memset(&output[out_pos], 0, 4);
// transparent
memset(&output_xor[out_pos], 0, 4);
} else if (!and_val && xor_val) {
// solid white
memset(&output[out_pos], 0xFF, 4);
// transparent
memset(&output_xor[out_pos], 0, 4);
} else if (and_val && xor_val) {
// transparent
memset(&output[out_pos], 0, 4);
// solid white -> invert color
memset(&output_xor[out_pos], 0xFF, 4);
}
}
}
*_pitch = width * 4;
*_height = real_height;
*rgba_out = output;
*xor_out = output_xor;
return 0;
}
static int fixup_color_mask(uint8_t *input, uint8_t **rgba_out, uint8_t **xor_out, int width, int height, int pitch)
{
int size = height * pitch;
uint8_t *output = av_malloc(size);
uint8_t *output_xor = av_malloc(size);
int x, y;
if (!output || !output_xor) {
av_free(output);
av_free(output_xor);
return AVERROR(ENOMEM);
}
memcpy(output, input, size);
memcpy(output_xor, input, size);
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
int pos = (y*pitch) + (4*x) + 3;
output[pos] = input[pos] ? 0 : 0xFF;
output_xor[pos] = input[pos] ? 0xFF : 0;
}
}
*rgba_out = output;
*xor_out = output_xor;
return 0;
}
static int update_mouse_pointer(AVFilterContext *avctx, DXGI_OUTDUPL_FRAME_INFO *frame_info)
{
DdagrabContext *dda = avctx->priv;
HRESULT hr;
int ret, ret2;
if (frame_info->LastMouseUpdateTime.QuadPart == 0)
return 0;
if (frame_info->PointerPosition.Visible) {
switch (dda->output_desc.Rotation) {
case DXGI_MODE_ROTATION_ROTATE90:
dda->mouse_x = frame_info->PointerPosition.Position.y;
dda->mouse_y = dda->output_desc.DesktopCoordinates.right - dda->output_desc.DesktopCoordinates.left - frame_info->PointerPosition.Position.x - 1;
break;
case DXGI_MODE_ROTATION_ROTATE180:
dda->mouse_x = dda->output_desc.DesktopCoordinates.right - dda->output_desc.DesktopCoordinates.left - frame_info->PointerPosition.Position.x - 1;
dda->mouse_y = dda->output_desc.DesktopCoordinates.bottom - dda->output_desc.DesktopCoordinates.top - frame_info->PointerPosition.Position.y - 1;
break;
case DXGI_MODE_ROTATION_ROTATE270:
dda->mouse_x = dda->output_desc.DesktopCoordinates.bottom - dda->output_desc.DesktopCoordinates.top - frame_info->PointerPosition.Position.y - 1;
dda->mouse_y = frame_info->PointerPosition.Position.x;
break;
default:
dda->mouse_x = frame_info->PointerPosition.Position.x;
dda->mouse_y = frame_info->PointerPosition.Position.y;
}
} else {
dda->mouse_x = dda->mouse_y = -1;
}
if (frame_info->PointerShapeBufferSize) {
UINT size = frame_info->PointerShapeBufferSize;
DXGI_OUTDUPL_POINTER_SHAPE_INFO shape_info;
uint8_t *rgba_buf = NULL, *rgb_xor_buf = NULL;
uint8_t *buf = av_malloc(size);
if (!buf)
return AVERROR(ENOMEM);
hr = IDXGIOutputDuplication_GetFramePointerShape(dda->dxgi_outdupl,
size,
buf,
&size,
&shape_info);
if (FAILED(hr)) {
av_free(buf);
av_log(avctx, AV_LOG_ERROR, "Failed getting pointer shape: %lx\n", hr);
return AVERROR_EXTERNAL;
}
if (shape_info.Type == DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MONOCHROME) {
ret = convert_mono_buffer(buf, &rgba_buf, &rgb_xor_buf, &shape_info.Width, &shape_info.Height, &shape_info.Pitch);
av_freep(&buf);
if (ret < 0)
return ret;
} else if (shape_info.Type == DXGI_OUTDUPL_POINTER_SHAPE_TYPE_MASKED_COLOR) {
ret = fixup_color_mask(buf, &rgba_buf, &rgb_xor_buf, shape_info.Width, shape_info.Height, shape_info.Pitch);
av_freep(&buf);
if (ret < 0)
return ret;
} else if (shape_info.Type == DXGI_OUTDUPL_POINTER_SHAPE_TYPE_COLOR) {
rgba_buf = buf;
buf = NULL;
} else {
av_log(avctx, AV_LOG_WARNING, "Unsupported pointer shape type: %d\n", (int)shape_info.Type);
av_freep(&buf);
return 0;
}
release_resource(&dda->mouse_resource_view);
release_resource(&dda->mouse_texture);
release_resource(&dda->mouse_xor_resource_view);
release_resource(&dda->mouse_xor_texture);
ret = create_d3d11_pointer_tex(avctx, rgba_buf, &shape_info, &dda->mouse_texture, &dda->mouse_resource_view);
ret2 = rgb_xor_buf ? create_d3d11_pointer_tex(avctx, rgb_xor_buf, &shape_info, &dda->mouse_xor_texture, &dda->mouse_xor_resource_view) : 0;
av_freep(&rgba_buf);
av_freep(&rgb_xor_buf);
if (ret < 0)
return ret;
if (ret2 < 0)
return ret2;
av_log(avctx, AV_LOG_VERBOSE, "Updated pointer shape texture\n");
}
return 0;
}
static int next_frame_internal(AVFilterContext *avctx, ID3D11Texture2D **desktop_texture, int need_frame)
{
DXGI_OUTDUPL_FRAME_INFO frame_info;
DdagrabContext *dda = avctx->priv;
IDXGIResource *desktop_resource = NULL;
HRESULT hr;
int ret;
hr = IDXGIOutputDuplication_AcquireNextFrame(
dda->dxgi_outdupl,
dda->time_timeout,
&frame_info,
&desktop_resource);
if (hr == DXGI_ERROR_WAIT_TIMEOUT) {
return AVERROR(EAGAIN);
} else if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "AcquireNextFrame failed: %lx\n", hr);
return AVERROR_EXTERNAL;
}
if (dda->draw_mouse) {
ret = update_mouse_pointer(avctx, &frame_info);
if (ret < 0)
goto error;
}
if (!frame_info.LastPresentTime.QuadPart || !frame_info.AccumulatedFrames) {
if (need_frame) {
ret = AVERROR(EAGAIN);
goto error;
}
// Unforunately, we can't rely on the desktop_resource's format in this case.
// The API might even return it in with a format that was not in the initial
// list of supported formats, and it can change/flicker randomly.
// To work around this, return an internal copy of the last valid texture we got.
release_resource(&desktop_resource);
// The initial probing should make this impossible.
if (!dda->buffer_texture) {
av_log(avctx, AV_LOG_ERROR, "No buffer texture while operating!\n");
ret = AVERROR_BUG;
goto error;
}
av_log(avctx, AV_LOG_TRACE, "Returning internal buffer for a frame!\n");
ID3D11Texture2D_AddRef(dda->buffer_texture);
*desktop_texture = dda->buffer_texture;
return 0;
}
hr = IDXGIResource_QueryInterface(desktop_resource, &IID_ID3D11Texture2D, (void**)desktop_texture);
release_resource(&desktop_resource);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "DXGIResource QueryInterface failed\n");
ret = AVERROR_EXTERNAL;
goto error;
}
if (!dda->buffer_texture) {
D3D11_TEXTURE2D_DESC desc;
ID3D11Texture2D_GetDesc(*desktop_texture, &desc);
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = 0;
desc.CPUAccessFlags = 0;
desc.MiscFlags = 0;
hr = ID3D11Device_CreateTexture2D(dda->device_hwctx->device, &desc, NULL, &dda->buffer_texture);
if (FAILED(hr)) {
release_resource(desktop_texture);
av_log(avctx, AV_LOG_ERROR, "Failed creating internal buffer texture.\n");
ret = AVERROR(ENOMEM);
goto error;
}
}
ID3D11DeviceContext_CopyResource(dda->device_hwctx->device_context,
(ID3D11Resource*)dda->buffer_texture,
(ID3D11Resource*)*desktop_texture);
return 0;
error:
release_resource(&desktop_resource);
hr = IDXGIOutputDuplication_ReleaseFrame(dda->dxgi_outdupl);
if (FAILED(hr))
av_log(avctx, AV_LOG_ERROR, "DDA error ReleaseFrame failed!\n");
return ret;
}
static int probe_output_format(AVFilterContext *avctx)
{
DdagrabContext *dda = avctx->priv;
D3D11_TEXTURE2D_DESC desc;
int ret;
av_assert1(!dda->probed_texture);
do {
ret = next_frame_internal(avctx, &dda->probed_texture, 1);
} while(ret == AVERROR(EAGAIN));
if (ret < 0)
return ret;
ID3D11Texture2D_GetDesc(dda->probed_texture, &desc);
dda->raw_format = desc.Format;
dda->raw_width = desc.Width;
dda->raw_height = desc.Height;
if (dda->width <= 0)
dda->width = dda->raw_width;
if (dda->height <= 0)
dda->height = dda->raw_height;
return 0;
}
static av_cold int init_hwframes_ctx(AVFilterContext *avctx)
{
DdagrabContext *dda = avctx->priv;
int ret = 0;
dda->frames_ref = av_hwframe_ctx_alloc(dda->device_ref);
if (!dda->frames_ref)
return AVERROR(ENOMEM);
dda->frames_ctx = (AVHWFramesContext*)dda->frames_ref->data;
dda->frames_hwctx = (AVD3D11VAFramesContext*)dda->frames_ctx->hwctx;
dda->frames_ctx->format = AV_PIX_FMT_D3D11;
dda->frames_ctx->width = dda->width;
dda->frames_ctx->height = dda->height;
switch (dda->raw_format) {
case DXGI_FORMAT_B8G8R8A8_UNORM:
av_log(avctx, AV_LOG_VERBOSE, "Probed 8 bit RGB frame format\n");
dda->frames_ctx->sw_format = AV_PIX_FMT_BGRA;
break;
case DXGI_FORMAT_R10G10B10A2_UNORM:
av_log(avctx, AV_LOG_VERBOSE, "Probed 10 bit RGB frame format\n");
dda->frames_ctx->sw_format = AV_PIX_FMT_X2BGR10;
break;
case DXGI_FORMAT_R16G16B16A16_FLOAT:
av_log(avctx, AV_LOG_VERBOSE, "Probed 16 bit float RGB frame format\n");
dda->frames_ctx->sw_format = AV_PIX_FMT_RGBAF16;
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unexpected texture output format!\n");
return AVERROR_BUG;
}
if (dda->draw_mouse)
dda->frames_hwctx->BindFlags |= D3D11_BIND_RENDER_TARGET;
ret = av_hwframe_ctx_init(dda->frames_ref);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to initialise hardware frames context: %d.\n", ret);
goto fail;
}
return 0;
fail:
av_buffer_unref(&dda->frames_ref);
return ret;
}
static int ddagrab_config_props(AVFilterLink *outlink)
{
AVFilterContext *avctx = outlink->src;
DdagrabContext *dda = avctx->priv;
int ret;
if (avctx->hw_device_ctx) {
dda->device_ctx = (AVHWDeviceContext*)avctx->hw_device_ctx->data;
if (dda->device_ctx->type != AV_HWDEVICE_TYPE_D3D11VA) {
av_log(avctx, AV_LOG_ERROR, "Non-D3D11VA input hw_device_ctx\n");
return AVERROR(EINVAL);
}
dda->device_ref = av_buffer_ref(avctx->hw_device_ctx);
if (!dda->device_ref)
return AVERROR(ENOMEM);
av_log(avctx, AV_LOG_VERBOSE, "Using provided hw_device_ctx\n");
} else {
ret = av_hwdevice_ctx_create(&dda->device_ref, AV_HWDEVICE_TYPE_D3D11VA, NULL, NULL, 0);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Failed to create D3D11VA device.\n");
return ret;
}
dda->device_ctx = (AVHWDeviceContext*)dda->device_ref->data;
av_log(avctx, AV_LOG_VERBOSE, "Created internal hw_device_ctx\n");
}
dda->device_hwctx = (AVD3D11VADeviceContext*)dda->device_ctx->hwctx;
ret = init_dxgi_dda(avctx);
if (ret < 0)
return ret;
ret = probe_output_format(avctx);
if (ret < 0)
return ret;
if (dda->out_fmt && dda->raw_format != dda->out_fmt && (!dda->allow_fallback || dda->force_fmt)) {
av_log(avctx, AV_LOG_ERROR, "Requested output format unavailable.\n");
return AVERROR(ENOTSUP);
}
dda->width -= FFMAX(dda->width - dda->raw_width + dda->offset_x, 0);
dda->height -= FFMAX(dda->height - dda->raw_height + dda->offset_y, 0);
dda->time_base = av_inv_q(dda->framerate);
dda->time_frame = av_gettime_relative() / av_q2d(dda->time_base);
dda->time_timeout = av_rescale_q(1, dda->time_base, (AVRational) { 1, 1000 }) / 2;
if (dda->draw_mouse) {
ret = init_render_resources(avctx);
if (ret < 0)
return ret;
}
ret = init_hwframes_ctx(avctx);
if (ret < 0)
return ret;
outlink->hw_frames_ctx = av_buffer_ref(dda->frames_ref);
if (!outlink->hw_frames_ctx)
return AVERROR(ENOMEM);
outlink->w = dda->width;
outlink->h = dda->height;
outlink->time_base = (AVRational){1, TIMER_RES};
outlink->frame_rate = dda->framerate;
return 0;
}
static int draw_mouse_pointer(AVFilterContext *avctx, AVFrame *frame)
{
DdagrabContext *dda = avctx->priv;
ID3D11DeviceContext *devctx = dda->device_hwctx->device_context;
ID3D11Texture2D *frame_tex = (ID3D11Texture2D*)frame->data[0];
D3D11_RENDER_TARGET_VIEW_DESC target_desc = { 0 };
ID3D11RenderTargetView* target_view = NULL;
ID3D11Buffer *mouse_vertex_buffer = NULL;
D3D11_TEXTURE2D_DESC tex_desc;
int num_vertices = 0;
int x, y;
HRESULT hr;
int ret = 0;
if (!dda->mouse_texture || dda->mouse_x < 0 || dda->mouse_y < 0)
return 0;
ID3D11Texture2D_GetDesc(dda->mouse_texture, &tex_desc);
x = dda->mouse_x - dda->offset_x;
y = dda->mouse_y - dda->offset_y;
if (x >= dda->width || y >= dda->height ||
-x >= (int)tex_desc.Width || -y >= (int)tex_desc.Height)
return 0;
target_desc.Format = dda->raw_format;
target_desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
target_desc.Texture2D.MipSlice = 0;
hr = ID3D11Device_CreateRenderTargetView(dda->device_hwctx->device,
(ID3D11Resource*)frame_tex,
&target_desc,
&target_view);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreateRenderTargetView failed: %lx\n", hr);
ret = AVERROR_EXTERNAL;
goto end;
}
ID3D11DeviceContext_ClearState(devctx);
{
D3D11_VIEWPORT viewport = { 0 };
viewport.Width = dda->width;
viewport.Height = dda->height;
viewport.MinDepth = 0.0f;
viewport.MaxDepth = 1.0f;
ID3D11DeviceContext_RSSetViewports(devctx, 1, &viewport);
}
{
FLOAT vertices[] = {
// x, y, z, u, v
x , y + tex_desc.Height, 0.0f, 0.0f, 1.0f,
x , y , 0.0f, 0.0f, 0.0f,
x + tex_desc.Width, y + tex_desc.Height, 0.0f, 1.0f, 1.0f,
x + tex_desc.Width, y , 0.0f, 1.0f, 0.0f,
};
UINT stride = sizeof(FLOAT) * 5;
UINT offset = 0;
D3D11_SUBRESOURCE_DATA init_data = { 0 };
D3D11_BUFFER_DESC buf_desc = { 0 };
switch (dda->output_desc.Rotation) {
case DXGI_MODE_ROTATION_ROTATE90:
vertices[ 0] = x; vertices[ 1] = y;
vertices[ 5] = x; vertices[ 6] = y - tex_desc.Width;
vertices[10] = x + tex_desc.Height; vertices[11] = y;
vertices[15] = x + tex_desc.Height; vertices[16] = y - tex_desc.Width;
vertices[ 3] = 0.0f; vertices[ 4] = 0.0f;
vertices[ 8] = 1.0f; vertices[ 9] = 0.0f;
vertices[13] = 0.0f; vertices[14] = 1.0f;
vertices[18] = 1.0f; vertices[19] = 1.0f;
break;
case DXGI_MODE_ROTATION_ROTATE180:
vertices[ 0] = x - tex_desc.Width; vertices[ 1] = y;
vertices[ 5] = x - tex_desc.Width; vertices[ 6] = y - tex_desc.Height;
vertices[10] = x; vertices[11] = y;
vertices[15] = x; vertices[16] = y - tex_desc.Height;
vertices[ 3] = 1.0f; vertices[ 4] = 0.0f;
vertices[ 8] = 1.0f; vertices[ 9] = 1.0f;
vertices[13] = 0.0f; vertices[14] = 0.0f;
vertices[18] = 0.0f; vertices[19] = 1.0f;
break;
case DXGI_MODE_ROTATION_ROTATE270:
vertices[ 0] = x - tex_desc.Height; vertices[ 1] = y + tex_desc.Width;
vertices[ 5] = x - tex_desc.Height; vertices[ 6] = y;
vertices[10] = x; vertices[11] = y + tex_desc.Width;
vertices[15] = x; vertices[16] = y;
vertices[ 3] = 1.0f; vertices[ 4] = 1.0f;
vertices[ 8] = 0.0f; vertices[ 9] = 1.0f;
vertices[13] = 1.0f; vertices[14] = 0.0f;
vertices[18] = 0.0f; vertices[19] = 0.0f;
break;
default:
break;
}
num_vertices = sizeof(vertices) / (sizeof(FLOAT) * 5);
buf_desc.Usage = D3D11_USAGE_DEFAULT;
buf_desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
buf_desc.ByteWidth = sizeof(vertices);
init_data.pSysMem = vertices;
hr = ID3D11Device_CreateBuffer(dda->device_hwctx->device,
&buf_desc,
&init_data,
&mouse_vertex_buffer);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "CreateBuffer failed: %lx\n", hr);
ret = AVERROR_EXTERNAL;
goto end;
}
ID3D11DeviceContext_IASetVertexBuffers(devctx, 0, 1, &mouse_vertex_buffer, &stride, &offset);
ID3D11DeviceContext_IASetInputLayout(devctx, dda->input_layout);
ID3D11DeviceContext_IASetPrimitiveTopology(devctx, D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
}
ID3D11DeviceContext_VSSetShader(devctx, dda->vertex_shader, NULL, 0);
ID3D11DeviceContext_VSSetConstantBuffers(devctx, 0, 1, &dda->const_buffer);
ID3D11DeviceContext_PSSetSamplers(devctx, 0, 1, &dda->sampler_state);
ID3D11DeviceContext_PSSetShaderResources(devctx, 0, 1, &dda->mouse_resource_view);
ID3D11DeviceContext_PSSetShader(devctx, dda->pixel_shader, NULL, 0);
ID3D11DeviceContext_OMSetBlendState(devctx, dda->blend_state, NULL, 0xFFFFFFFF);
ID3D11DeviceContext_OMSetRenderTargets(devctx, 1, &target_view, NULL);
ID3D11DeviceContext_Draw(devctx, num_vertices, 0);
if (dda->mouse_xor_resource_view) {
ID3D11DeviceContext_PSSetShaderResources(devctx, 0, 1, &dda->mouse_xor_resource_view);
ID3D11DeviceContext_OMSetBlendState(devctx, dda->blend_state_xor, NULL, 0xFFFFFFFF);
ID3D11DeviceContext_Draw(devctx, num_vertices, 0);
}
end:
release_resource(&mouse_vertex_buffer);
release_resource(&target_view);
return ret;
}
static int ddagrab_request_frame(AVFilterLink *outlink)
{
AVFilterContext *avctx = outlink->src;
DdagrabContext *dda = avctx->priv;
ID3D11Texture2D *cur_texture = NULL;
D3D11_TEXTURE2D_DESC desc = { 0 };
D3D11_BOX box = { 0 };
int64_t time_frame = dda->time_frame;
int64_t now, delay;
AVFrame *frame = NULL;
HRESULT hr;
int ret;
/* time_frame is in units of microseconds divided by the time_base.
* This means that adding a clean 1M to it is the equivalent of adding
* 1M*time_base microseconds to it, except it avoids all rounding error.
* The only time rounding error occurs is when multiplying to calculate
* the delay. So any rounding error there corrects itself over time.
*/
time_frame += TIMER_RES64;
for (;;) {
now = av_gettime_relative();
delay = time_frame * av_q2d(dda->time_base) - now;
if (delay <= 0) {
if (delay < -TIMER_RES64 * av_q2d(dda->time_base)) {
time_frame += TIMER_RES64;
}
break;
}
av_usleep(delay);
}
if (!dda->first_pts)
dda->first_pts = now;
now -= dda->first_pts;
if (!dda->probed_texture) {
do {
ret = next_frame_internal(avctx, &cur_texture, 0);
} while (ret == AVERROR(EAGAIN) && !dda->dup_frames);
} else {
cur_texture = dda->probed_texture;
dda->probed_texture = NULL;
ret = 0;
}
if (ret == AVERROR(EAGAIN) && dda->last_frame->buf[0]) {
frame = av_frame_alloc();
if (!frame)
return AVERROR(ENOMEM);
ret = av_frame_ref(frame, dda->last_frame);
if (ret < 0) {
av_frame_free(&frame);
return ret;
}
av_log(avctx, AV_LOG_DEBUG, "Duplicated output frame\n");
goto frame_done;
} else if (ret == AVERROR(EAGAIN)) {
av_log(avctx, AV_LOG_VERBOSE, "Initial DDA AcquireNextFrame timeout!\n");
return AVERROR(EAGAIN);
} else if (ret < 0) {
return ret;
}
// AcquireNextFrame sometimes has bursts of delay.
// This increases accuracy of the timestamp, but might upset consumers due to more jittery framerate?
now = av_gettime_relative() - dda->first_pts;
ID3D11Texture2D_GetDesc(cur_texture, &desc);
if (desc.Format != dda->raw_format ||
(int)desc.Width != dda->raw_width ||
(int)desc.Height != dda->raw_height) {
av_log(avctx, AV_LOG_ERROR, "Output parameters changed!\n");
ret = AVERROR_OUTPUT_CHANGED;
goto fail;
}
frame = ff_get_video_buffer(outlink, dda->width, dda->height);
if (!frame) {
ret = AVERROR(ENOMEM);
goto fail;
}
box.left = dda->offset_x;
box.top = dda->offset_y;
box.right = box.left + dda->width;
box.bottom = box.top + dda->height;
box.front = 0;
box.back = 1;
ID3D11DeviceContext_CopySubresourceRegion(
dda->device_hwctx->device_context,
(ID3D11Resource*)frame->data[0], (UINT)(intptr_t)frame->data[1],
0, 0, 0,
(ID3D11Resource*)cur_texture, 0,
&box);
release_resource(&cur_texture);
hr = IDXGIOutputDuplication_ReleaseFrame(dda->dxgi_outdupl);
if (FAILED(hr)) {
av_log(avctx, AV_LOG_ERROR, "DDA ReleaseFrame failed!\n");
ret = AVERROR_EXTERNAL;
goto fail;
}
if (dda->draw_mouse) {
ret = draw_mouse_pointer(avctx, frame);
if (ret < 0)
goto fail;
}
frame->sample_aspect_ratio = (AVRational){1, 1};
if (desc.Format == DXGI_FORMAT_B8G8R8A8_UNORM ||
desc.Format == DXGI_FORMAT_R10G10B10A2_UNORM) {
// According to MSDN, all integer formats contain sRGB image data
frame->color_range = AVCOL_RANGE_JPEG;
frame->color_primaries = AVCOL_PRI_BT709;
frame->color_trc = AVCOL_TRC_IEC61966_2_1;
frame->colorspace = AVCOL_SPC_RGB;
} else if(desc.Format == DXGI_FORMAT_R16G16B16A16_FLOAT) {
// According to MSDN, all floating point formats contain sRGB image data with linear 1.0 gamma.
frame->color_range = AVCOL_RANGE_JPEG;
frame->color_primaries = AVCOL_PRI_BT709;
frame->color_trc = AVCOL_TRC_LINEAR;
frame->colorspace = AVCOL_SPC_RGB;
} else {
ret = AVERROR_BUG;
goto fail;
}
ret = av_frame_replace(dda->last_frame, frame);
if (ret < 0)
return ret;
frame_done:
frame->pts = now;
dda->time_frame = time_frame;
return ff_filter_frame(outlink, frame);
fail:
if (frame)
av_frame_free(&frame);
if (cur_texture)
IDXGIOutputDuplication_ReleaseFrame(dda->dxgi_outdupl);
release_resource(&cur_texture);
return ret;
}
static const AVFilterPad ddagrab_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = ddagrab_request_frame,
.config_props = ddagrab_config_props,
},
};
const AVFilter ff_vsrc_ddagrab = {
.name = "ddagrab",
.description = NULL_IF_CONFIG_SMALL("Grab Windows Desktop images using Desktop Duplication API"),
.priv_size = sizeof(DdagrabContext),
.priv_class = &ddagrab_class,
.init = ddagrab_init,
.uninit = ddagrab_uninit,
.inputs = NULL,
FILTER_OUTPUTS(ddagrab_outputs),
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_D3D11),
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
.flags = AVFILTER_FLAG_HWDEVICE,
};
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