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Diffstat (limited to 'src/capture/xcomposite_cuda.c')
-rw-r--r--src/capture/xcomposite_cuda.c474
1 files changed, 474 insertions, 0 deletions
diff --git a/src/capture/xcomposite_cuda.c b/src/capture/xcomposite_cuda.c
new file mode 100644
index 0000000..d6c147b
--- /dev/null
+++ b/src/capture/xcomposite_cuda.c
@@ -0,0 +1,474 @@
+#include "../../include/capture/xcomposite_cuda.h"
+#include "../../include/egl.h"
+#include "../../include/cuda.h"
+#include "../../include/window_texture.h"
+#include "../../include/time.h"
+#include <X11/extensions/Xcomposite.h>
+#include <libavutil/hwcontext.h>
+#include <libavutil/hwcontext_cuda.h>
+#include <libavutil/frame.h>
+#include <libavcodec/avcodec.h>
+
+typedef struct {
+ gsr_capture_xcomposite_cuda_params params;
+ Display *dpy;
+ XEvent xev;
+ bool should_stop;
+ bool stop_is_error;
+ bool window_resized;
+ bool created_hw_frame;
+ double window_resize_timer;
+
+ vec2i window_size;
+ vec2i window_pos;
+
+ unsigned int target_texture_id;
+ vec2i texture_size;
+ Window composite_window;
+ WindowTexture window_texture;
+
+ CUgraphicsResource cuda_graphics_resource;
+ CUarray mapped_array;
+
+ gsr_egl egl;
+ gsr_cuda cuda;
+} gsr_capture_xcomposite_cuda;
+
+static int max_int(int a, int b) {
+ return a > b ? a : b;
+}
+
+static int min_int(int a, int b) {
+ return a < b ? a : b;
+}
+
+static void gsr_capture_xcomposite_cuda_stop(gsr_capture *cap, AVCodecContext *video_codec_context);
+
+static bool cuda_register_opengl_texture(gsr_capture_xcomposite_cuda *cap_xcomp) {
+ CUresult res;
+ CUcontext old_ctx;
+ res = cap_xcomp->cuda.cuCtxPushCurrent_v2(cap_xcomp->cuda.cu_ctx);
+ res = cap_xcomp->cuda.cuGraphicsGLRegisterImage(
+ &cap_xcomp->cuda_graphics_resource, cap_xcomp->target_texture_id, GL_TEXTURE_2D,
+ CU_GRAPHICS_REGISTER_FLAGS_READ_ONLY);
+ if (res != CUDA_SUCCESS) {
+ const char *err_str = "unknown";
+ cap_xcomp->cuda.cuGetErrorString(res, &err_str);
+ fprintf(stderr,
+ "Error: cuGraphicsGLRegisterImage failed, error %s, texture "
+ "id: %u\n",
+ err_str, cap_xcomp->target_texture_id);
+ return false;
+ }
+
+ res = cap_xcomp->cuda.cuGraphicsResourceSetMapFlags(cap_xcomp->cuda_graphics_resource, CU_GRAPHICS_MAP_RESOURCE_FLAGS_READ_ONLY);
+ res = cap_xcomp->cuda.cuGraphicsMapResources(1, &cap_xcomp->cuda_graphics_resource, 0);
+
+ res = cap_xcomp->cuda.cuGraphicsSubResourceGetMappedArray(&cap_xcomp->mapped_array, cap_xcomp->cuda_graphics_resource, 0, 0);
+ res = cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return true;
+}
+
+static bool cuda_create_codec_context(gsr_capture_xcomposite_cuda *cap_xcomp, AVCodecContext *video_codec_context) {
+ CUcontext old_ctx;
+ cap_xcomp->cuda.cuCtxPushCurrent_v2(cap_xcomp->cuda.cu_ctx);
+
+ AVBufferRef *device_ctx = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);
+ if(!device_ctx) {
+ fprintf(stderr, "Error: Failed to create hardware device context\n");
+ cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return false;
+ }
+
+ AVHWDeviceContext *hw_device_context = (AVHWDeviceContext*)device_ctx->data;
+ AVCUDADeviceContext *cuda_device_context = (AVCUDADeviceContext*)hw_device_context->hwctx;
+ cuda_device_context->cuda_ctx = cap_xcomp->cuda.cu_ctx;
+ if(av_hwdevice_ctx_init(device_ctx) < 0) {
+ fprintf(stderr, "Error: Failed to create hardware device context\n");
+ av_buffer_unref(&device_ctx);
+ cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return false;
+ }
+
+ AVBufferRef *frame_context = av_hwframe_ctx_alloc(device_ctx);
+ if(!frame_context) {
+ fprintf(stderr, "Error: Failed to create hwframe context\n");
+ av_buffer_unref(&device_ctx);
+ cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return false;
+ }
+
+ AVHWFramesContext *hw_frame_context =
+ (AVHWFramesContext *)frame_context->data;
+ hw_frame_context->width = video_codec_context->width;
+ hw_frame_context->height = video_codec_context->height;
+ hw_frame_context->sw_format = AV_PIX_FMT_0RGB32;
+ hw_frame_context->format = video_codec_context->pix_fmt;
+ hw_frame_context->device_ref = device_ctx;
+ hw_frame_context->device_ctx = (AVHWDeviceContext*)device_ctx->data;
+
+ if (av_hwframe_ctx_init(frame_context) < 0) {
+ fprintf(stderr, "Error: Failed to initialize hardware frame context "
+ "(note: ffmpeg version needs to be > 4.0)\n");
+ av_buffer_unref(&device_ctx);
+ av_buffer_unref(&frame_context);
+ cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return false;
+ }
+
+ video_codec_context->hw_device_ctx = device_ctx;
+ video_codec_context->hw_frames_ctx = frame_context;
+ return true;
+}
+
+static unsigned int gl_create_texture(gsr_capture_xcomposite_cuda *cap_xcomp, int width, int height) {
+ // Generating this second texture is needed because
+ // cuGraphicsGLRegisterImage cant be used with the texture that is mapped
+ // directly to the pixmap.
+ // TODO: Investigate if it's somehow possible to use the pixmap texture
+ // directly, this should improve performance since only less image copy is
+ // then needed every frame.
+ // Ignoring failure for now.. TODO: Show proper error
+ unsigned int texture_id = 0;
+ cap_xcomp->egl.glGenTextures(1, &texture_id);
+ cap_xcomp->egl.glBindTexture(GL_TEXTURE_2D, texture_id);
+ cap_xcomp->egl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+
+ cap_xcomp->egl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ cap_xcomp->egl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ cap_xcomp->egl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ cap_xcomp->egl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+
+ cap_xcomp->egl.glBindTexture(GL_TEXTURE_2D, 0);
+ return texture_id;
+}
+
+static int gsr_capture_xcomposite_cuda_start(gsr_capture *cap, AVCodecContext *video_codec_context) {
+ gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
+
+ XWindowAttributes attr;
+ if(!XGetWindowAttributes(cap_xcomp->dpy, cap_xcomp->params.window, &attr)) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_start failed: invalid window id: %lu\n", cap_xcomp->params.window);
+ return -1;
+ }
+
+ cap_xcomp->window_size.x = max_int(attr.width, 0);
+ cap_xcomp->window_size.y = max_int(attr.height, 0);
+ Window c;
+ XTranslateCoordinates(cap_xcomp->dpy, cap_xcomp->params.window, DefaultRootWindow(cap_xcomp->dpy), 0, 0, &cap_xcomp->window_pos.x, &cap_xcomp->window_pos.y, &c);
+
+ XSelectInput(cap_xcomp->dpy, cap_xcomp->params.window, StructureNotifyMask | ExposureMask);
+
+ if(!gsr_egl_load(&cap_xcomp->egl, cap_xcomp->dpy)) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_start: failed to load opengl\n");
+ return -1;
+ }
+
+ cap_xcomp->egl.eglSwapInterval(cap_xcomp->egl.egl_display, 0);
+ // TODO: Fallback to composite window
+ if(window_texture_init(&cap_xcomp->window_texture, cap_xcomp->dpy, cap_xcomp->params.window, &cap_xcomp->egl) != 0) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_start: failed get window texture for window %ld\n", cap_xcomp->params.window);
+ gsr_egl_unload(&cap_xcomp->egl);
+ return -1;
+ }
+
+ cap_xcomp->egl.glBindTexture(GL_TEXTURE_2D, window_texture_get_opengl_texture_id(&cap_xcomp->window_texture));
+ cap_xcomp->texture_size.x = 0;
+ cap_xcomp->texture_size.y = 0;
+ cap_xcomp->egl.glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &cap_xcomp->texture_size.x);
+ cap_xcomp->egl.glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &cap_xcomp->texture_size.y);
+ cap_xcomp->egl.glBindTexture(GL_TEXTURE_2D, 0);
+
+ cap_xcomp->texture_size.x = max_int(2, cap_xcomp->texture_size.x & ~1);
+ cap_xcomp->texture_size.y = max_int(2, cap_xcomp->texture_size.y & ~1);
+
+ cap_xcomp->target_texture_id = gl_create_texture(cap_xcomp, cap_xcomp->texture_size.x, cap_xcomp->texture_size.y);
+ if(cap_xcomp->target_texture_id == 0) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_start: failed to create opengl texture\n");
+ gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
+ return -1;
+ }
+
+ video_codec_context->width = cap_xcomp->texture_size.x;
+ video_codec_context->height = cap_xcomp->texture_size.y;
+
+ if(!gsr_cuda_load(&cap_xcomp->cuda)) {
+ gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
+ return -1;
+ }
+
+ if(!cuda_create_codec_context(cap_xcomp, video_codec_context)) {
+ gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
+ return -1;
+ }
+
+ if(!cuda_register_opengl_texture(cap_xcomp)) {
+ gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
+ return -1;
+ }
+
+ cap_xcomp->window_resize_timer = clock_get_monotonic_seconds();
+ return 0;
+}
+
+static void gsr_capture_xcomposite_cuda_stop(gsr_capture *cap, AVCodecContext *video_codec_context) {
+ gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
+
+ window_texture_deinit(&cap_xcomp->window_texture);
+
+ if(cap_xcomp->target_texture_id) {
+ cap_xcomp->egl.glDeleteTextures(1, &cap_xcomp->target_texture_id);
+ cap_xcomp->target_texture_id = 0;
+ }
+
+ if(cap_xcomp->composite_window) {
+ XCompositeUnredirectWindow(cap_xcomp->dpy, cap_xcomp->composite_window, CompositeRedirectAutomatic);
+ cap_xcomp->composite_window = None;
+ }
+
+ av_buffer_unref(&video_codec_context->hw_device_ctx);
+ av_buffer_unref(&video_codec_context->hw_frames_ctx);
+
+ if(cap_xcomp->cuda.cu_ctx) {
+ CUcontext old_ctx;
+ cap_xcomp->cuda.cuCtxPushCurrent_v2(cap_xcomp->cuda.cu_ctx);
+
+ cap_xcomp->cuda.cuGraphicsUnmapResources(1, &cap_xcomp->cuda_graphics_resource, 0);
+ cap_xcomp->cuda.cuGraphicsUnregisterResource(cap_xcomp->cuda_graphics_resource);
+ cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ }
+ gsr_cuda_unload(&cap_xcomp->cuda);
+
+ gsr_egl_unload(&cap_xcomp->egl);
+ if(cap_xcomp->dpy) {
+ // TODO: Why is this crashing?
+ XCloseDisplay(cap_xcomp->dpy);
+ cap_xcomp->dpy = NULL;
+ }
+}
+
+static void gsr_capture_xcomposite_cuda_tick(gsr_capture *cap, AVCodecContext *video_codec_context, AVFrame **frame) {
+ gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
+
+ cap_xcomp->egl.glClear(GL_COLOR_BUFFER_BIT);
+
+ if(!cap_xcomp->created_hw_frame) {
+ cap_xcomp->created_hw_frame = true;
+ CUcontext old_ctx;
+ cap_xcomp->cuda.cuCtxPushCurrent_v2(cap_xcomp->cuda.cu_ctx);
+
+ if(av_hwframe_get_buffer(video_codec_context->hw_frames_ctx, *frame, 0) < 0) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_tick: av_hwframe_get_buffer failed\n");
+ cap_xcomp->should_stop = true;
+ cap_xcomp->stop_is_error = true;
+ cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return;
+ }
+
+ cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ }
+
+ if(XCheckTypedWindowEvent(cap_xcomp->dpy, cap_xcomp->params.window, DestroyNotify, &cap_xcomp->xev)) {
+ cap_xcomp->should_stop = true;
+ cap_xcomp->stop_is_error = false;
+ }
+
+ if(XCheckTypedWindowEvent(cap_xcomp->dpy, cap_xcomp->params.window, Expose, &cap_xcomp->xev) && cap_xcomp->xev.xexpose.count == 0) {
+ cap_xcomp->window_resize_timer = clock_get_monotonic_seconds();
+ cap_xcomp->window_resized = true;
+ }
+
+ if(XCheckTypedWindowEvent(cap_xcomp->dpy, cap_xcomp->params.window, ConfigureNotify, &cap_xcomp->xev) && cap_xcomp->xev.xconfigure.window == cap_xcomp->params.window) {
+ while(XCheckTypedWindowEvent(cap_xcomp->dpy, cap_xcomp->params.window, ConfigureNotify, &cap_xcomp->xev)) {}
+ Window c;
+ XTranslateCoordinates(cap_xcomp->dpy, cap_xcomp->params.window, DefaultRootWindow(cap_xcomp->dpy), 0, 0, &cap_xcomp->xev.xconfigure.x, &cap_xcomp->xev.xconfigure.y, &c);
+ cap_xcomp->window_pos.x = cap_xcomp->xev.xconfigure.x;
+ cap_xcomp->window_pos.y = cap_xcomp->xev.xconfigure.y;
+
+ /* Window resize */
+ if(cap_xcomp->xev.xconfigure.width != cap_xcomp->window_size.x || cap_xcomp->xev.xconfigure.height != cap_xcomp->window_size.y) {
+ cap_xcomp->window_size.x = max_int(cap_xcomp->xev.xconfigure.width, 0);
+ cap_xcomp->window_size.y = max_int(cap_xcomp->xev.xconfigure.height, 0);
+ cap_xcomp->window_resize_timer = clock_get_monotonic_seconds();
+ cap_xcomp->window_resized = true;
+ }
+ }
+
+ const double window_resize_timeout = 1.0; // 1 second
+ if(cap_xcomp->window_resized && clock_get_monotonic_seconds() - cap_xcomp->window_resize_timer >= window_resize_timeout) {
+ cap_xcomp->window_resized = false;
+ fprintf(stderr, "Resize window!\n");
+ if(window_texture_on_resize(&cap_xcomp->window_texture) != 0) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_tick: window_texture_on_resize failed\n");
+ cap_xcomp->should_stop = true;
+ cap_xcomp->stop_is_error = true;
+ return;
+ }
+
+ cap_xcomp->egl.glBindTexture(GL_TEXTURE_2D, window_texture_get_opengl_texture_id(&cap_xcomp->window_texture));
+ cap_xcomp->texture_size.x = 0;
+ cap_xcomp->texture_size.y = 0;
+ cap_xcomp->egl.glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &cap_xcomp->texture_size.x);
+ cap_xcomp->egl.glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &cap_xcomp->texture_size.y);
+ cap_xcomp->egl.glBindTexture(GL_TEXTURE_2D, 0);
+
+ cap_xcomp->texture_size.x = min_int(video_codec_context->width, max_int(2, cap_xcomp->texture_size.x & ~1));
+ cap_xcomp->texture_size.y = min_int(video_codec_context->height, max_int(2, cap_xcomp->texture_size.y & ~1));
+
+ cap_xcomp->egl.glBindTexture(GL_TEXTURE_2D, cap_xcomp->target_texture_id);
+ cap_xcomp->egl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, cap_xcomp->texture_size.x, cap_xcomp->texture_size.y, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+ cap_xcomp->egl.glBindTexture(GL_TEXTURE_2D, 0);
+
+ CUcontext old_ctx;
+ CUresult res = cap_xcomp->cuda.cuCtxPushCurrent_v2(cap_xcomp->cuda.cu_ctx);
+
+ cap_xcomp->cuda.cuGraphicsUnmapResources(1, &cap_xcomp->cuda_graphics_resource, 0);
+ cap_xcomp->cuda.cuGraphicsUnregisterResource(cap_xcomp->cuda_graphics_resource);
+ res = cap_xcomp->cuda.cuGraphicsGLRegisterImage(&cap_xcomp->cuda_graphics_resource, cap_xcomp->target_texture_id, GL_TEXTURE_2D, CU_GRAPHICS_REGISTER_FLAGS_READ_ONLY);
+ if (res != CUDA_SUCCESS) {
+ const char *err_str = "unknown";
+ cap_xcomp->cuda.cuGetErrorString(res, &err_str);
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_tick: cuGraphicsGLRegisterImage failed, error %s, texture id: %u\n", err_str, cap_xcomp->target_texture_id);
+ cap_xcomp->should_stop = true;
+ cap_xcomp->stop_is_error = true;
+ res = cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return;
+ }
+
+ res = cap_xcomp->cuda.cuGraphicsResourceSetMapFlags(cap_xcomp->cuda_graphics_resource, CU_GRAPHICS_MAP_RESOURCE_FLAGS_READ_ONLY);
+ res = cap_xcomp->cuda.cuGraphicsMapResources(1, &cap_xcomp->cuda_graphics_resource, 0);
+ res = cap_xcomp->cuda.cuGraphicsSubResourceGetMappedArray(&cap_xcomp->mapped_array, cap_xcomp->cuda_graphics_resource, 0, 0);
+
+ av_frame_free(frame);
+ *frame = av_frame_alloc();
+ if(!frame) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_tick: failed to allocate frame\n");
+ cap_xcomp->should_stop = true;
+ cap_xcomp->stop_is_error = true;
+ res = cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return;
+ }
+ (*frame)->format = video_codec_context->pix_fmt;
+ (*frame)->width = video_codec_context->width;
+ (*frame)->height = video_codec_context->height;
+ (*frame)->color_range = AVCOL_RANGE_JPEG;
+
+ if(av_hwframe_get_buffer(video_codec_context->hw_frames_ctx, *frame, 0) < 0) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_tick: av_hwframe_get_buffer failed\n");
+ cap_xcomp->should_stop = true;
+ cap_xcomp->stop_is_error = true;
+ res = cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ return;
+ }
+
+ // Make it completely black to clear unused parts
+ // TODO: cuMemsetD32?
+ res = cap_xcomp->cuda.cuMemsetD8_v2((CUdeviceptr)(*frame)->data[0], 0, (*frame)->width * (*frame)->height * 4);
+ res = cap_xcomp->cuda.cuCtxPopCurrent_v2(&old_ctx);
+ }
+}
+
+static bool gsr_capture_xcomposite_cuda_should_stop(gsr_capture *cap, bool *err) {
+ gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
+ if(cap_xcomp->should_stop) {
+ if(err)
+ *err = cap_xcomp->stop_is_error;
+ return true;
+ }
+
+ if(err)
+ *err = false;
+ return false;
+}
+
+static int gsr_capture_xcomposite_cuda_capture(gsr_capture *cap, AVFrame *frame) {
+ gsr_capture_xcomposite_cuda *cap_xcomp = cap->priv;
+
+ // TODO: Use a framebuffer instead. glCopyImageSubData requires opengl 4.2
+ vec2i source_pos = { 0, 0 };
+ vec2i source_size = cap_xcomp->texture_size;
+
+ // Requires opengl 4.2... TODO: Replace with earlier opengl if opengl < 4.2.
+ cap_xcomp->egl.glCopyImageSubData(
+ window_texture_get_opengl_texture_id(&cap_xcomp->window_texture), GL_TEXTURE_2D, 0, source_pos.x, source_pos.y, 0,
+ cap_xcomp->target_texture_id, GL_TEXTURE_2D, 0, 0, 0, 0,
+ source_size.x, source_size.y, 1);
+ unsigned int err = cap_xcomp->egl.glGetError();
+ if(err != 0) {
+ static bool error_shown = false;
+ if(!error_shown) {
+ error_shown = true;
+ fprintf(stderr, "Error: glCopyImageSubData failed, gl error: %d\n", err);
+ }
+ }
+ cap_xcomp->egl.eglSwapBuffers(cap_xcomp->egl.egl_display, cap_xcomp->egl.egl_surface);
+ // TODO: Remove this copy, which is only possible by using nvenc directly and encoding window_pixmap.target_texture_id
+
+ frame->linesize[0] = frame->width * 4;
+
+ CUDA_MEMCPY2D memcpy_struct;
+ memcpy_struct.srcXInBytes = 0;
+ memcpy_struct.srcY = 0;
+ memcpy_struct.srcMemoryType = CU_MEMORYTYPE_ARRAY;
+
+ memcpy_struct.dstXInBytes = 0;
+ memcpy_struct.dstY = 0;
+ memcpy_struct.dstMemoryType = CU_MEMORYTYPE_DEVICE;
+
+ memcpy_struct.srcArray = cap_xcomp->mapped_array;
+ memcpy_struct.dstDevice = (CUdeviceptr)frame->data[0];
+ memcpy_struct.dstPitch = frame->linesize[0];
+ memcpy_struct.WidthInBytes = frame->width * 4;
+ memcpy_struct.Height = frame->height;
+ cap_xcomp->cuda.cuMemcpy2D_v2(&memcpy_struct);
+
+ return 0;
+}
+
+static void gsr_capture_xcomposite_cuda_destroy(gsr_capture *cap, AVCodecContext *video_codec_context) {
+ gsr_capture_xcomposite_cuda_stop(cap, video_codec_context);
+ if(cap->priv) {
+ free(cap->priv);
+ cap->priv = NULL;
+ }
+ free(cap);
+}
+
+gsr_capture* gsr_capture_xcomposite_cuda_create(const gsr_capture_xcomposite_cuda_params *params) {
+ if(!params) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_create params is NULL\n");
+ return NULL;
+ }
+
+ gsr_capture *cap = calloc(1, sizeof(gsr_capture));
+ if(!cap)
+ return NULL;
+
+ gsr_capture_xcomposite_cuda *cap_xcomp = calloc(1, sizeof(gsr_capture_xcomposite_cuda));
+ if(!cap_xcomp) {
+ free(cap);
+ return NULL;
+ }
+
+ Display *display = XOpenDisplay(NULL);
+ if(!display) {
+ fprintf(stderr, "gsr error: gsr_capture_xcomposite_cuda_create failed: XOpenDisplay failed\n");
+ free(cap);
+ free(cap_xcomp);
+ return NULL;
+ }
+
+ cap_xcomp->dpy = display;
+ cap_xcomp->params = *params;
+
+ *cap = (gsr_capture) {
+ .start = gsr_capture_xcomposite_cuda_start,
+ .tick = gsr_capture_xcomposite_cuda_tick,
+ .should_stop = gsr_capture_xcomposite_cuda_should_stop,
+ .capture = gsr_capture_xcomposite_cuda_capture,
+ .destroy = gsr_capture_xcomposite_cuda_destroy,
+ .priv = cap_xcomp
+ };
+
+ return cap;
+}