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-rw-r--r--src/main.cpp564
1 files changed, 564 insertions, 0 deletions
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..28fa725
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,564 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string>
+#include <vector>
+
+#define GLX_GLXEXT_PROTOTYPES
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+#include <GL/glx.h>
+#include <GL/glxext.h>
+
+#include <X11/extensions/Xcomposite.h>
+#include <X11/extensions/Xdamage.h>
+
+// TODO: Use opencl or vulkan instead
+#include <ffnvcodec/nvEncodeAPI.h>
+//#include <ffnvcodec/dynlink_cuda.h>
+extern "C" {
+#include <libavutil/hwcontext_cuda.h>
+#include <libavcodec/avcodec.h>
+#include <libavformat/avformat.h>
+}
+#include <cudaGL.h>
+
+extern "C" {
+#include <libavutil/hwcontext.h>
+}
+
+#include <CL/cl.h>
+
+struct ScopedGLXFBConfig {
+ ~ScopedGLXFBConfig() {
+ if(configs)
+ XFree(configs);
+ }
+
+ GLXFBConfig *configs = nullptr;
+};
+
+struct WindowPixmap {
+ WindowPixmap() : pixmap(None), glx_pixmap(None), texture_id(0), texture_width(0), texture_height(0) {
+
+ }
+
+ Pixmap pixmap;
+ GLXPixmap glx_pixmap;
+ GLuint texture_id;
+
+ GLint texture_width;
+ GLint texture_height;
+
+ GLuint dst_texture_id;
+};
+
+static bool x11_supports_composite_named_window_pixmap(Display *dpy) {
+ int extension_major;
+ int extension_minor;
+ if(!XCompositeQueryExtension(dpy, &extension_major, &extension_minor))
+ return false;
+
+ int major_version;
+ int minor_version;
+ return XCompositeQueryVersion(dpy, &major_version, &minor_version) && (major_version > 0 || minor_version >= 2);
+}
+
+static void cleanup_window_pixmap(Display *dpy, WindowPixmap &pixmap) {
+ if(pixmap.texture_id) {
+ glDeleteTextures(1, &pixmap.texture_id);
+ pixmap.texture_id = 0;
+ pixmap.texture_width = 0;
+ pixmap.texture_height = 0;
+ }
+
+ if(pixmap.glx_pixmap) {
+ glXReleaseTexImageEXT(dpy, pixmap.glx_pixmap, GLX_FRONT_EXT);
+ glXDestroyPixmap(dpy, pixmap.glx_pixmap);
+ pixmap.glx_pixmap = None;
+ }
+
+ if(pixmap.pixmap) {
+ XFreePixmap(dpy, pixmap.pixmap);
+ pixmap.pixmap = None;
+ }
+}
+
+static bool recreate_window_pixmap(Display *dpy, Window window_id, WindowPixmap &pixmap) {
+ cleanup_window_pixmap(dpy, pixmap);
+
+ const int pixmap_config[] = {
+ GLX_BIND_TO_TEXTURE_RGBA_EXT, True,
+ GLX_DRAWABLE_TYPE, GLX_PIXMAP_BIT,
+ GLX_BIND_TO_TEXTURE_TARGETS_EXT, GLX_TEXTURE_2D_BIT_EXT,
+ //GLX_BIND_TO_MIPMAP_TEXTURE_EXT, True,
+ GLX_DOUBLEBUFFER, False,
+ GLX_Y_INVERTED_EXT, (int)GLX_DONT_CARE,
+ None
+ };
+
+ const int pixmap_attribs[] = {
+ GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
+ GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGB_EXT,
+ GLX_MIPMAP_TEXTURE_EXT, 0,
+ None
+ };
+
+ int c;
+ GLXFBConfig *configs = glXChooseFBConfig(dpy, 0, pixmap_config, &c);
+ if(!configs) {
+ fprintf(stderr, "Failed too choose fb config\n");
+ return false;
+ }
+ ScopedGLXFBConfig scoped_configs;
+ scoped_configs.configs = configs;
+
+ Pixmap new_window_pixmap = XCompositeNameWindowPixmap(dpy, window_id);
+ if(!new_window_pixmap) {
+ fprintf(stderr, "Failed to get pixmap for window %ld\n", window_id);
+ return false;
+ }
+
+ GLXPixmap glx_pixmap = glXCreatePixmap(dpy, *configs, new_window_pixmap, pixmap_attribs);
+ if(!glx_pixmap) {
+ fprintf(stderr, "Failed to create glx pixmap\n");
+ XFreePixmap(dpy, new_window_pixmap);
+ return false;
+ }
+
+ pixmap.pixmap = new_window_pixmap;
+ pixmap.glx_pixmap = glx_pixmap;
+
+ glEnable(GL_TEXTURE_2D);
+ glGenTextures(1, &pixmap.texture_id);
+ glBindTexture(GL_TEXTURE_2D, pixmap.texture_id);
+
+ //glEnable(GL_BLEND);
+ //glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+ glXBindTexImageEXT(dpy, pixmap.glx_pixmap, GLX_FRONT_EXT, NULL);
+ glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &pixmap.texture_width);
+ glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &pixmap.texture_height);
+ printf("texture width: %d, height: %d\n", pixmap.texture_width, pixmap.texture_height);
+ //glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, pixmap.texture_width, pixmap.texture_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+ //glXBindTexImageEXT(dpy, pixmap.glx_pixmap, GLX_FRONT_EXT, NULL);
+ //glGenerateTextureMipmapEXT(glxpixmap, GL_TEXTURE_2D);
+
+ //glGenerateMipmap(GL_TEXTURE_2D);
+
+ //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
+ //glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
+ glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);//GL_LINEAR );
+ glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);//GL_LINEAR);//GL_LINEAR_MIPMAP_LINEAR );
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+ glBindTexture(GL_TEXTURE_2D, 0);
+
+ glGenTextures(1, &pixmap.dst_texture_id);
+ glBindTexture(GL_TEXTURE_2D, pixmap.dst_texture_id);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, pixmap.texture_width, pixmap.texture_height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
+ glCopyImageSubData(pixmap.texture_id, GL_TEXTURE_2D, 0, 0, 0, 0, pixmap.dst_texture_id, GL_TEXTURE_2D, 0, 0, 0, 0, pixmap.texture_width, pixmap.texture_height, 0);
+ glBindTexture(GL_TEXTURE_2D, 0);
+
+ return pixmap.texture_id != 0 && pixmap.dst_texture_id != 0;
+}
+
+std::vector<std::string> get_hardware_acceleration_device_names() {
+ #if 1
+ std::vector<std::string> result;
+
+ cl_uint platform_count = 0;
+ clGetPlatformIDs(0, nullptr, &platform_count);
+ cl_platform_id *platforms = new cl_platform_id[platform_count];
+ clGetPlatformIDs(platform_count, platforms, nullptr);
+
+ for(cl_uint i = 0; i < platform_count; ++i) {
+ cl_uint device_count = 0;
+ clGetDeviceIDs(platforms[i], CL_DEVICE_TYPE_GPU, 0, nullptr, &device_count);
+ cl_device_id *devices = new cl_device_id[device_count];
+ clGetDeviceIDs(platforms[i], CL_DEVICE_TYPE_GPU, device_count, devices, nullptr);
+
+ for(cl_uint j = 0; j < device_count; ++j) {
+ size_t value_size = 0;
+ clGetDeviceInfo(devices[j], CL_DEVICE_NAME, 0, nullptr, &value_size);
+ std::string device_name(value_size, 0);
+ clGetDeviceInfo(devices[j], CL_DEVICE_NAME, value_size, &device_name[0], nullptr);
+ printf("Device: %s\n", device_name.c_str());
+ result.push_back(std::move(device_name));
+ }
+
+ delete []devices;
+ }
+
+ delete []platforms;
+ return result;
+ #else
+ int iGpu = 0;
+ CUresult res;
+ if(cuInit(0) < 0) {
+ fprintf(stderr, "Error: cuInit failed\n");
+ return {};
+ }
+
+ int nGpu = 0;
+ cuDeviceGetCount(&nGpu);
+ if(iGpu < 0 || iGpu >= nGpu) {
+ fprintf(stderr, "Error: failed...\n");
+ return {};
+ }
+
+ CUdevice cuDevice = 0;
+ cuDeviceGet(&cuDevice, iGpu);
+ char deviceName[80];
+ cuDeviceGetName(deviceName, sizeof(deviceName), cuDevice);
+ printf("device name: %s\n", deviceName);
+ return { deviceName };
+ #endif
+}
+
+static inline double ToDouble(const AVRational& r) {
+ return (double) r.num / (double) r.den;
+}
+
+static void receive_frames(AVCodecContext *av_codec_context, AVStream *stream, AVFormatContext *av_format_context) {
+ for( ; ; ) {
+ AVPacket *av_packet = new AVPacket;
+ av_init_packet(av_packet);
+ av_packet->data = NULL;
+ av_packet->size = 0;
+ int res = avcodec_receive_packet(av_codec_context, av_packet);
+ if(res == 0) { // we have a packet, send the packet to the muxer
+ printf("Received packet!\n");
+ printf("data: %p, size: %d, pts: %ld\n", (void*)av_packet->data, av_packet->size, av_packet->pts);
+ printf("timebase: %f\n", ToDouble(stream->time_base));
+
+ // prepare packet
+ av_packet_rescale_ts(av_packet, av_codec_context->time_base, stream->time_base);
+ av_packet->stream_index = stream->index;
+/*
+ if(av_packet->pts != (int64_t) AV_NOPTS_VALUE) {
+ av_packet->pts = av_rescale_q(av_packet->pts, av_codec_context->time_base, stream->time_base);
+ }
+ if(av_packet->dts != (int64_t) AV_NOPTS_VALUE) {
+ av_packet->dts = av_rescale_q(av_packet->dts, av_codec_context->time_base, stream->time_base);
+ }
+*/
+ if(av_interleaved_write_frame(av_format_context, av_packet) < 0) {
+ fprintf(stderr, "Error: Failed to write frame to muxer\n");
+ }
+ //av_packet_unref(&av_packet);
+ } else if(res == AVERROR(EAGAIN)) { // we have no packet
+ //printf("No packet!\n");
+ break;
+ } else if(res == AVERROR_EOF) { // this is the end of the stream
+ printf("End of stream!\n");
+ break;
+ } else {
+ printf("Unexpected error: %d\n", res);
+ break;
+ }
+ }
+ //av_packet_unref(&av_packet);
+}
+
+int main(int argc, char **argv) {
+ if(argc < 2) {
+ fprintf(stderr, "usage: hardware-screen-recorder <window_id>\n");
+ return 1;
+ }
+
+ Window src_window_id = atoi(argv[1]);
+
+ Display *dpy = XOpenDisplay(nullptr);
+ if(!dpy) {
+ fprintf(stderr, "Error: Failed to open display\n");
+ return 1;
+ }
+
+ bool has_name_pixmap = x11_supports_composite_named_window_pixmap(dpy);
+ if(!has_name_pixmap) {
+ fprintf(stderr, "Error: XCompositeNameWindowPixmap is not supported by your X11 server\n");
+ return 1;
+ }
+
+ // TODO: Verify if this is needed
+ int screen_count = ScreenCount(dpy);
+ for(int i = 0; i < screen_count; ++i) {
+ XCompositeRedirectSubwindows(dpy, RootWindow(dpy, i), CompositeRedirectAutomatic);
+ }
+
+ XWindowAttributes attr;
+ if(!XGetWindowAttributes(dpy, src_window_id, &attr)) {
+ fprintf(stderr, "Error: Invalid window id: %lu\n", src_window_id);
+ return 1;
+ }
+
+ //glXMakeContextCurrent(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
+ if(!glfwInit()) {
+ fprintf(stderr, "Error: Failed to initialize glfw\n");
+ return 1;
+ }
+
+ GLFWwindow *window = glfwCreateWindow(1920, 1080, "Hello world", nullptr, nullptr);
+ if(!window) {
+ fprintf(stderr, "Error: Failed to create glfw window\n");
+ glfwTerminate();
+ return 1;
+ }
+
+ glfwMakeContextCurrent(window);
+
+ glewExperimental = GL_TRUE;
+ GLenum nGlewError = glewInit();
+ if (nGlewError != GLEW_OK) {
+ fprintf(stderr, "%s - Error initializing GLEW! %s\n", __FUNCTION__, glewGetErrorString(nGlewError));
+ return 1;
+ }
+ glGetError(); // to clear the error caused deep in GLEW
+
+ WindowPixmap window_pixmap;
+ if(!recreate_window_pixmap(dpy, src_window_id, window_pixmap)) {
+ fprintf(stderr, "Error: Failed to create glx pixmap for window: %lu\n", src_window_id);
+ return 1;
+ }
+
+ //avcodec_register_all();
+ AVCodec *av_codec = avcodec_find_encoder_by_name("h264_nvenc"); //avcodec_find_encoder(AV_CODEC_ID_H264);
+ if(!av_codec) {
+ fprintf(stderr, "Error: No encoder was found for codec h264\n");
+ return 1;
+ }
+
+ AVOutputFormat *format = av_guess_format("mp4", nullptr, nullptr);
+ if(!format) {
+ fprintf(stderr, "Error: Invalid format: mp4\n");
+ return 1;
+ }
+ AVFormatContext *av_format_context = avformat_alloc_context();
+ av_format_context->oformat = format;
+ if(avio_open(&av_format_context->pb, "test_new.mp4", AVIO_FLAG_WRITE) < 0) {
+ fprintf(stderr, "Error: Failed to open output file: test_new.mp4");
+ return 1;
+ }
+
+ AVStream *stream = avformat_new_stream(av_format_context, av_codec);
+ if(!stream) {
+ fprintf(stderr, "Error: Failed to create stream\n");
+ return 1;
+ }
+ stream->id = av_format_context->nb_streams - 1;
+
+ AVCodecContext *av_codec_context = avcodec_alloc_context3(av_codec);
+ if(avcodec_get_context_defaults3(av_codec_context, av_codec) < 0) {
+ fprintf(stderr, "Error: Failed to get av codec context defaults\n");
+ return 1;
+ }
+ av_codec_context->codec_id = av_codec->id;
+ av_codec_context->codec_type = av_codec->type;
+ if(av_format_context->oformat->flags & AVFMT_GLOBALHEADER)
+ av_codec_context->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
+
+ av_codec_context->time_base.num = 1;
+ av_codec_context->time_base.den = 60;
+ av_codec_context->gop_size = 12;
+ av_codec_context->bit_rate = 400000;
+ av_codec_context->width = 720; // window_pixmap.texture_width
+ av_codec_context->height = 480; // window_pixmap.texture_height
+#if SSR_USE_AVSTREAM_TIME_BASE
+ stream->time_base = codec_context->time_base;
+#endif
+ av_codec_context->sample_aspect_ratio.num = 1;
+ av_codec_context->sample_aspect_ratio.den = 1;
+ av_codec_context->pix_fmt = AV_PIX_FMT_CUDA;
+ av_codec_context->codec_type = AVMEDIA_TYPE_VIDEO;
+ av_codec_context->sw_pix_fmt = AV_PIX_FMT_0BGR32;
+ stream->sample_aspect_ratio = av_codec_context->sample_aspect_ratio;
+
+ std::vector<std::string> hardware_accelerated_devices = get_hardware_acceleration_device_names();
+ if(hardware_accelerated_devices.empty()) {
+ fprintf(stderr, "Error: No hardware accelerated device was found on your system\n");
+ return 1;
+ }
+
+ AVBufferRef *device_ctx = nullptr;
+ if(av_hwdevice_ctx_create(&device_ctx, AV_HWDEVICE_TYPE_CUDA, hardware_accelerated_devices[0].c_str(), NULL, 0) < 0) {
+ fprintf(stderr, "Error: Failed to create hardware device context for gpu: %s\n", hardware_accelerated_devices[0].c_str());
+ return 1;
+ }
+
+ AVHWDeviceContext *hw_device_context = (AVHWDeviceContext*)device_ctx->data;
+ AVCUDADeviceContext *cuda_device_context = (AVCUDADeviceContext*)hw_device_context->hwctx;
+ CUcontext *cuda_context = &(cuda_device_context->cuda_ctx);
+ if(!cuda_context) {
+ fprintf(stderr, "Error: No cuda context\n");
+ return 1;
+ }
+ AVBufferRef *frame_context = av_hwframe_ctx_alloc(device_ctx);
+
+ AVHWFramesContext *hw_frame_context = (AVHWFramesContext*)frame_context->data;
+ hw_frame_context->width = window_pixmap.texture_width;
+ hw_frame_context->height = window_pixmap.texture_height;
+ hw_frame_context->sw_format = AV_PIX_FMT_0BGR32;
+ hw_frame_context->format = AV_PIX_FMT_CUDA;
+ 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");
+ return 1;
+ }
+
+ av_codec_context->hw_device_ctx = device_ctx;
+ av_codec_context->hw_frames_ctx = frame_context;
+
+ if(avcodec_open2(av_codec_context, av_codec, nullptr) < 0) {
+ fprintf(stderr, "Error: avcodec_open2 failed\n");
+ return 1;
+ }
+
+ if(avcodec_parameters_from_context(stream->codecpar, av_codec_context) < 0) {
+ fprintf(stderr, "Error: Can't copy parameters to stream!\n");
+ return 1;
+ }
+
+ //AVDictionary *opts = nullptr;
+ //av_dict_set(&opts, "b", "2.5M", 0);
+ // if(avcodec_open2(av_codec_context, av_codec, nullptr) < 0) {
+ // fprintf(stderr, "Error: avcodec_open2 failed\n");
+ // return 1;
+ // }
+
+ CUresult res;
+ CUcontext old_ctx;
+ CUgraphicsResource cuda_graphics_resource;
+ res = cuCtxPopCurrent(&old_ctx);
+ res = cuCtxPushCurrent(*cuda_context);
+ res = cuGraphicsGLRegisterImage(&cuda_graphics_resource, window_pixmap.dst_texture_id, GL_TEXTURE_2D, CU_GRAPHICS_REGISTER_FLAGS_READ_ONLY);
+ if(res != CUDA_SUCCESS) {
+ fprintf(stderr, "Error: cuGraphicsGLRegisterImage failed, error %d, texture id: %u\n", res, window_pixmap.texture_id);
+ return 1;
+ }
+ res = cuCtxPopCurrent(&old_ctx);
+
+
+ AVFrame *rgb_frame = av_frame_alloc();
+ if(av_hwframe_get_buffer(frame_context, rgb_frame, 0) < 0) {
+ fprintf(stderr, "Error: av_hwframe_get_buffer failed\n");
+ return 1;
+ }
+
+
+ // Get context
+ res = cuCtxPopCurrent(&old_ctx);
+ res = cuCtxPushCurrent(*cuda_context);
+
+ // Get texture
+ res = cuGraphicsResourceSetMapFlags(cuda_graphics_resource, CU_GRAPHICS_MAP_RESOURCE_FLAGS_READ_ONLY);
+ res = cuGraphicsMapResources(1, &cuda_graphics_resource, 0);
+
+ // Map texture to cuda array
+ CUarray mapped_array;
+ res = cuGraphicsSubResourceGetMappedArray(&mapped_array, cuda_graphics_resource, 0, 0);
+
+ // Release texture
+ res = cuGraphicsUnmapResources(1, &cuda_graphics_resource, 0);
+
+ CUDA_MEMCPY2D memcpy_struct;
+ memcpy_struct.srcXInBytes = 0;
+ memcpy_struct.srcY = 0;
+ memcpy_struct.srcMemoryType = CUmemorytype::CU_MEMORYTYPE_ARRAY;
+
+ memcpy_struct.dstXInBytes = 0;
+ memcpy_struct.dstY = 0;
+ memcpy_struct.dstMemoryType = CUmemorytype::CU_MEMORYTYPE_DEVICE;
+
+ memcpy_struct.srcArray = mapped_array;
+ memcpy_struct.dstDevice = (CUdeviceptr)rgb_frame->data[0];
+ memcpy_struct.dstPitch = rgb_frame->linesize[0];
+ memcpy_struct.WidthInBytes = rgb_frame->width * 4;
+ memcpy_struct.Height = rgb_frame->height;
+ cuMemcpy2D(&memcpy_struct);
+
+ // Release context
+ res = cuCtxPopCurrent(&old_ctx);
+
+ if(avformat_write_header(av_format_context, NULL) != 0) {
+ fprintf(stderr, "Error: Failed to write header\n");
+ return 1;
+ }
+
+ if(avcodec_send_frame(av_codec_context, rgb_frame) < 0) {
+ fprintf(stderr, "Error: avcodec_send_frame failed\n");
+ }
+
+ //av_frame_free(&rgb_frame);
+ //avcodec_close(av_codec_context);
+
+ XSelectInput(dpy, src_window_id, StructureNotifyMask);
+
+ int damage_event;
+ int damage_error;
+ if(!XDamageQueryExtension(dpy, &damage_event, &damage_error)) {
+ fprintf(stderr, "Error: XDamage is not supported by your X11 server\n");
+ return 1;
+ }
+
+ Damage xdamage = XDamageCreate(dpy, src_window_id, XDamageReportNonEmpty);
+
+ XEvent e;
+ while (1) {
+ XNextEvent(dpy, &e);
+ if (e.type == ConfigureNotify) {
+ // Window resize
+ printf("Resize window!\n");
+ recreate_window_pixmap(dpy, src_window_id, window_pixmap);
+ } else if (e.type == damage_event + XDamageNotify) {
+ XDamageNotifyEvent *de = (XDamageNotifyEvent*)&e;
+ // de->drawable is the window ID of the damaged window
+ XserverRegion region = XFixesCreateRegion(dpy, nullptr, 0);
+ // Subtract all the damage, repairing the window
+ XDamageSubtract(dpy, de->damage, None, region);
+ XFixesDestroyRegion(dpy, region);
+
+ glCopyImageSubData(window_pixmap.texture_id, GL_TEXTURE_2D, 0, 0, 0, 0, window_pixmap.dst_texture_id, GL_TEXTURE_2D, 0, 0, 0, 0, window_pixmap.texture_width, window_pixmap.texture_height, 0);
+ res = cuCtxPopCurrent(&old_ctx);
+ res = cuCtxPushCurrent(*cuda_context);
+ CUDA_MEMCPY2D memcpy_struct;
+ memcpy_struct.srcXInBytes = 0;
+ memcpy_struct.srcY = 0;
+ memcpy_struct.srcMemoryType = CUmemorytype::CU_MEMORYTYPE_ARRAY;
+
+ memcpy_struct.dstXInBytes = 0;
+ memcpy_struct.dstY = 0;
+ memcpy_struct.dstMemoryType = CUmemorytype::CU_MEMORYTYPE_DEVICE;
+
+ memcpy_struct.srcArray = mapped_array;
+ memcpy_struct.dstDevice = (CUdeviceptr)rgb_frame->data[0];
+ memcpy_struct.dstPitch = rgb_frame->linesize[0];
+ memcpy_struct.WidthInBytes = rgb_frame->width * 4;
+ memcpy_struct.Height = rgb_frame->height;
+ cuMemcpy2D(&memcpy_struct);
+ res = cuCtxPopCurrent(&old_ctx);
+ if(avcodec_send_frame(av_codec_context, rgb_frame) < 0) {
+ fprintf(stderr, "Error: avcodec_send_frame failed\n");
+ }
+ receive_frames(av_codec_context, stream, av_format_context);
+ }
+ }
+
+ if(av_write_trailer(av_format_context) != 0) {
+ fprintf(stderr, "Failed to write trailer\n");
+ }
+
+ if(av_format_context->pb)
+ avio_close(av_format_context->pb);
+ avformat_free_context(av_format_context);
+
+ XDamageDestroy(dpy, xdamage);
+ av_buffer_unref(&device_ctx);
+ avcodec_free_context(&av_codec_context);
+ cleanup_window_pixmap(dpy, window_pixmap);
+ for(int i = 0; i < screen_count; ++i) {
+ XCompositeUnredirectSubwindows(dpy, RootWindow(dpy, i), CompositeRedirectAutomatic);
+ }
+ XCloseDisplay(dpy);
+}