PapaTutuWawa/gpu-screen-recorder
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gpu-screen-recorder/src/main.cpp

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#include <stdio.h>
#include <stdlib.h>
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#include <assert.h>
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#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 {
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WindowPixmap() : pixmap(None), glx_pixmap(None), texture_id(0), target_texture_id(0), texture_width(0), texture_height(0) {
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}
Pixmap pixmap;
GLXPixmap glx_pixmap;
GLuint texture_id;
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GLuint target_texture_id;
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GLint texture_width;
GLint texture_height;
};
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) {
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if(pixmap.target_texture_id) {
glDeleteTextures(1, &pixmap.target_texture_id);
pixmap.target_texture_id = 0;
}
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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,
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GLX_BIND_TO_MIPMAP_TEXTURE_EXT, True,
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GLX_DOUBLEBUFFER, False,
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//GLX_Y_INVERTED_EXT, (int)GLX_DONT_CARE,
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None
};
const int pixmap_attribs[] = {
GLX_TEXTURE_TARGET_EXT, GLX_TEXTURE_2D_EXT,
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GLX_TEXTURE_FORMAT_EXT, GLX_TEXTURE_FORMAT_RGBA_EXT,
GLX_MIPMAP_TEXTURE_EXT, 1,
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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);
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#if 1
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glXBindTexImageEXT(dpy, pixmap.glx_pixmap, GLX_FRONT_EXT, NULL);
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glGenerateMipmap(GL_TEXTURE_2D);
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glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &pixmap.texture_width);
glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &pixmap.texture_height);
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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);
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printf("texture width: %d, height: %d\n", pixmap.texture_width, pixmap.texture_height);
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glGenTextures(1, &pixmap.target_texture_id);
glBindTexture(GL_TEXTURE_2D, pixmap.target_texture_id);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, pixmap.texture_width, pixmap.texture_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glGenerateMipmap(GL_TEXTURE_2D);
int err2 = glGetError();
printf("error: %d\n", err2);
glCopyImageSubData(
pixmap.texture_id, GL_TEXTURE_2D, 0, 0, 0, 0,
pixmap.target_texture_id, GL_TEXTURE_2D, 0, 0, 0, 0,
pixmap.texture_width, pixmap.texture_height, 1);
int err = glGetError();
printf("error: %d\n", err);
#else
pixmap.texture_width = 640;
pixmap.texture_height = 480;
uint8_t *image_data = (uint8_t*)malloc(pixmap.texture_width * pixmap.texture_height * 4);
assert(image_data);
for(int i = 0; i < pixmap.texture_width * pixmap.texture_height * 4; i += 4) {
*(uint32_t*)&image_data[i] = 0xFF0000FF;
}
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, pixmap.texture_width, pixmap.texture_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image_data);
#endif
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//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 );
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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);
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return pixmap.texture_id != 0 && pixmap.target_texture_id != 0;
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}
std::vector<std::string> get_hardware_acceleration_device_names() {
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#if 0
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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;
}
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#if 0
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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);
}
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#else
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static void receive_frames(AVCodecContext *av_codec_context, AVStream *stream, AVFormatContext *av_format_context) {
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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));
av_packet->pts = av_rescale_q_rnd(av_packet->pts, av_codec_context->time_base, stream->time_base, (AVRounding)(AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX));
av_packet->dts = av_rescale_q_rnd(av_packet->dts, av_codec_context->time_base, stream->time_base, (AVRounding)(AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX));
av_packet->duration = av_rescale_q(av_packet->duration, av_codec_context->time_base, stream->time_base);
av_packet->stream_index = stream->index;
//av_packet->stream_index = 0;
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/*
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int written = fwrite(av_packet->data, 1, av_packet->size, output_file);
if(written != av_packet->size) {
fprintf(stderr, "Failed to write %d bytes to file: %d, %d\n", av_packet->size, written, ferror(output_file));
}
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*/
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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);
}
#endif
static AVStream* add_stream(AVFormatContext *av_format_context, AVCodec **codec, enum AVCodecID codec_id) {
//*codec = avcodec_find_encoder(codec_id);
*codec = avcodec_find_encoder_by_name("h264_nvenc");
if(!*codec) {
fprintf(stderr, "Error: Could not find encoder for '%s'\n", avcodec_get_name(codec_id));
exit(1);
}
AVStream *stream = avformat_new_stream(av_format_context, *codec);
if(!stream) {
fprintf(stderr, "Error: Could not allocate stream\n");
exit(1);
}
stream->id = av_format_context->nb_streams - 1;
AVCodecContext *codec_context = stream->codec;
switch((*codec)->type) {
case AVMEDIA_TYPE_AUDIO: {
codec_context->sample_fmt = (*codec)->sample_fmts ? (*codec)->sample_fmts[0] : AV_SAMPLE_FMT_FLTP;
codec_context->bit_rate = 64000;
codec_context->sample_rate = 44100;
codec_context->channels = 2;
break;
}
case AVMEDIA_TYPE_VIDEO: {
codec_context->codec_id = codec_id;
codec_context->bit_rate = 400000;
// Resolution must be a multiple of two
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codec_context->width = 1920;
codec_context->height = 1080;
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// Timebase: This is the fundamental unit of time (in seconds) in terms of
// which frame timestamps are represented. For fixed-fps content,
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// timebase should be 1/framerate and timestamp increments should be identical to 1
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codec_context->time_base.num = 1;
codec_context->time_base.den = 60;
codec_context->framerate.num = 60;
codec_context->framerate.den = 1;
codec_context->sample_aspect_ratio.num = 1;
codec_context->sample_aspect_ratio.den = 1;
codec_context->gop_size = 12; // Emit one intra frame every twelve frames at most
codec_context->pix_fmt = AV_PIX_FMT_CUDA;
if(codec_context->codec_id == AV_CODEC_ID_MPEG1VIDEO)
codec_context->mb_decision = 2;
break;
}
default:
break;
}
// Some formats want stream headers to be seperate
if(av_format_context->oformat->flags & AVFMT_GLOBALHEADER)
av_format_context->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
return stream;
}
static void open_video(AVCodec *codec, AVStream *stream, WindowPixmap &window_pixmap, AVFrame **frame, AVBufferRef **device_ctx, CUgraphicsResource *cuda_graphics_resource) {
int ret;
AVCodecContext *codec_context = stream->codec;
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");
exit(1);
}
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());
exit(1);
}
AVBufferRef *frame_context = av_hwframe_ctx_alloc(*device_ctx);
if(!frame_context) {
fprintf(stderr, "Error: Failed to create hwframe context\n");
exit(1);
}
AVHWFramesContext *hw_frame_context = (AVHWFramesContext*)frame_context->data;
hw_frame_context->width = codec_context->width;
hw_frame_context->height = codec_context->height;
hw_frame_context->sw_format = AV_PIX_FMT_0BGR32;
hw_frame_context->format = 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");
exit(1);
}
codec_context->hw_device_ctx = *device_ctx;
codec_context->hw_frames_ctx = frame_context;
ret = avcodec_open2(codec_context, codec, nullptr);
if(ret < 0) {
fprintf(stderr, "Error: Could not open video codec: %s\n", "blabla");//av_err2str(ret));
exit(1);
}
*frame = av_frame_alloc();
if(!*frame) {
fprintf(stderr, "Error: Failed to allocate frame\n");
exit(1);
}
(*frame)->format = codec_context->pix_fmt;
(*frame)->width = codec_context->width;
(*frame)->height = codec_context->height;
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");
exit(1);
}
CUresult res;
CUcontext old_ctx;
res = cuCtxPopCurrent(&old_ctx);
res = cuCtxPushCurrent(*cuda_context);
res = cuGraphicsGLRegisterImage(cuda_graphics_resource, window_pixmap.target_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.target_texture_id);
exit(1);
}
res = cuCtxPopCurrent(&old_ctx);
}
static void close_video(AVStream *video_stream, AVFrame *frame) {
avcodec_close(video_stream->codec);
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//av_frame_free(&frame);
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}
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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;
}
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 5);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
GLFWwindow *window = glfwCreateWindow(1280, 720, "Hello world", nullptr, nullptr);
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if(!window) {
fprintf(stderr, "Error: Failed to create glfw window\n");
glfwTerminate();
return 1;
}
glfwMakeContextCurrent(window);
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//glfwSwapInterval(1);
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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;
}
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const char *filename = "test_video.mp4";
// Video start
AVFormatContext *av_format_context;
// The output format is automatically guessed by the file extension
avformat_alloc_output_context2(&av_format_context, nullptr, nullptr, filename);
if(!av_format_context) {
fprintf(stderr, "Error: Failed to deduce output format from file extension .mp4\n");
return 1;
}
AVOutputFormat *output_format = av_format_context->oformat;
AVCodec *video_codec;
AVStream *video_stream = add_stream(av_format_context, &video_codec, output_format->video_codec);
if(!video_stream) {
fprintf(stderr, "Error: Failed to create video stream\n");
return 1;
}
AVFrame *frame;
AVBufferRef *device_ctx;
CUgraphicsResource cuda_graphics_resource;
open_video(video_codec, video_stream, window_pixmap, &frame, &device_ctx, &cuda_graphics_resource);
av_dump_format(av_format_context, 0, filename, 1);
if(!(output_format->flags & AVFMT_NOFILE)) {
int ret = avio_open(&av_format_context->pb, filename, AVIO_FLAG_WRITE);
if(ret < 0) {
fprintf(stderr, "Error: Could not open '%s': %s\n", filename, "blabla");//av_err2str(ret));
return 1;
}
}
int ret = avformat_write_header(av_format_context, nullptr);
if(ret < 0) {
fprintf(stderr, "Error occurred when opening output file: %s\n", "blabla");//av_err2str(ret));
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");
exit(1);
}
//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);
int frame_count = 0;
fully in gpu
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CUresult res;
CUcontext old_ctx;
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);
// TODO: Remove this
AVCodecContext *codec_context = video_stream->codec;
if(av_hwframe_get_buffer(codec_context->hw_frames_ctx, frame, 0) < 0) {
fprintf(stderr, "Error: av_hwframe_get_buffer failed\n");
works
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exit(1);
}
while(!glfwWindowShouldClose(window)) {
glClear(GL_COLOR_BUFFER_BIT);
glfwSwapBuffers(window);
glfwPollEvents();
glCopyImageSubData(
window_pixmap.texture_id, GL_TEXTURE_2D, 0, 0, 0, 0,
window_pixmap.target_texture_id, GL_TEXTURE_2D, 0, 0, 0, 0,
window_pixmap.texture_width, window_pixmap.texture_height, 1);
fully in gpu
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//int err = glGetError();
//printf("error: %d\n", err);
works
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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)frame->data[0];
memcpy_struct.dstPitch = frame->linesize[0];
memcpy_struct.WidthInBytes = frame->width * 4;
memcpy_struct.Height = frame->height;
cuMemcpy2D(&memcpy_struct);
fully in gpu
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//res = cuCtxPopCurrent(&old_ctx);
works
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frame->pts = frame_count++;
if(avcodec_send_frame(video_stream->codec, frame) < 0) {
fprintf(stderr, "Error: avcodec_send_frame failed\n");
}
fully in gpu
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receive_frames(video_stream->codec, video_stream, av_format_context);
works
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}
#if 0
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) {
printf("Redraw!\n");
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);
glBindTexture(GL_TEXTURE_2D, window_pixmap.dst_texture_id);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, window_pixmap.texture_width, window_pixmap.texture_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, ff);
AVCodecContext *codec_context = video_stream->codec;
if(av_hwframe_get_buffer(codec_context->hw_frames_ctx, frame, 0) < 0) {
fprintf(stderr, "Error: av_hwframe_get_buffer failed\n");
exit(1);
}
// Get context
CUresult res;
CUcontext old_ctx;
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)frame->data[0];
memcpy_struct.dstPitch = frame->linesize[0];
memcpy_struct.WidthInBytes = frame->width * 4;
memcpy_struct.Height = frame->height;
cuMemcpy2D(&memcpy_struct);
res = cuCtxPopCurrent(&old_ctx);
frame->pts = frame_count++;
if(avcodec_send_frame(video_stream->codec, frame) < 0) {
fprintf(stderr, "Error: avcodec_send_frame failed\n");
}
receive_frames(video_stream->codec, video_stream, av_format_context, output_file);
}
}
#endif
#if 0
first
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//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");
}
works
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close_video(video_stream, frame);
if(!(output_format->fmt & AVFMT_NOFILE))
avio_close(output_format->pb);
first
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avformat_free_context(av_format_context);
XDamageDestroy(dpy, xdamage);
av_buffer_unref(&device_ctx);
avcodec_free_context(&av_codec_context);
works
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#else
if(av_write_trailer(av_format_context) != 0) {
fprintf(stderr, "Failed to write trailer\n");
}
close_video(video_stream, frame);
if(!(output_format->flags & AVFMT_NOFILE))
avio_close(av_format_context->pb);
avformat_free_context(av_format_context);
XDamageDestroy(dpy, xdamage);
#endif
first
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cleanup_window_pixmap(dpy, window_pixmap);
for(int i = 0; i < screen_count; ++i) {
XCompositeUnredirectSubwindows(dpy, RootWindow(dpy, i), CompositeRedirectAutomatic);
}
XCloseDisplay(dpy);
}
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