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#include "../../include/capture/xcomposite.h"
#include "../../include/window_texture.h"
#include "../../include/utils.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include <X11/Xlib.h>
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext.h>
#include <libavutil/frame.h>
#include <libavcodec/avcodec.h>
#include <va/va.h>
#include <va/va_drmcommon.h>
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;
}
void gsr_capture_xcomposite_init(gsr_capture_xcomposite *self, const gsr_capture_xcomposite_params *params) {
memset(self, 0, sizeof(*self));
self->params = *params;
}
static Window get_focused_window(Display *display, Atom net_active_window_atom) {
Atom type;
int format = 0;
unsigned long num_items = 0;
unsigned long bytes_after = 0;
unsigned char *properties = NULL;
if(XGetWindowProperty(display, DefaultRootWindow(display), net_active_window_atom, 0, 1024, False, AnyPropertyType, &type, &format, &num_items, &bytes_after, &properties) == Success && properties) {
Window focused_window = *(unsigned long*)properties;
XFree(properties);
return focused_window;
}
return None;
}
int gsr_capture_xcomposite_start(gsr_capture_xcomposite *self, AVCodecContext *video_codec_context, AVFrame *frame) {
self->base.video_codec_context = video_codec_context;
if(self->params.follow_focused) {
self->net_active_window_atom = XInternAtom(self->params.egl->x11.dpy, "_NET_ACTIVE_WINDOW", False);
if(!self->net_active_window_atom) {
fprintf(stderr, "gsr error: gsr_capture_xcomposite_start failed: failed to get _NET_ACTIVE_WINDOW atom\n");
return -1;
}
self->window = get_focused_window(self->params.egl->x11.dpy, self->net_active_window_atom);
} else {
self->window = self->params.window;
}
/* TODO: Do these in tick, and allow error if follow_focused */
XWindowAttributes attr;
if(!XGetWindowAttributes(self->params.egl->x11.dpy, self->params.window, &attr) && !self->params.follow_focused) {
fprintf(stderr, "gsr error: gsr_capture_xcomposite_start failed: invalid window id: %lu\n", self->params.window);
return -1;
}
self->window_size.x = max_int(attr.width, 0);
self->window_size.y = max_int(attr.height, 0);
if(self->params.follow_focused)
XSelectInput(self->params.egl->x11.dpy, DefaultRootWindow(self->params.egl->x11.dpy), PropertyChangeMask);
// TODO: Get select and add these on top of it and then restore at the end. Also do the same in other xcomposite
XSelectInput(self->params.egl->x11.dpy, self->params.window, StructureNotifyMask | ExposureMask);
if(!self->params.egl->eglExportDMABUFImageQueryMESA) {
fprintf(stderr, "gsr error: gsr_capture_xcomposite_start: could not find eglExportDMABUFImageQueryMESA\n");
return -1;
}
if(!self->params.egl->eglExportDMABUFImageMESA) {
fprintf(stderr, "gsr error: gsr_capture_xcomposite_start: could not find eglExportDMABUFImageMESA\n");
return -1;
}
/* Disable vsync */
self->params.egl->eglSwapInterval(self->params.egl->egl_display, 0);
if(window_texture_init(&self->window_texture, self->params.egl->x11.dpy, self->params.window, self->params.egl) != 0 && !self->params.follow_focused) {
fprintf(stderr, "gsr error: gsr_capture_xcomposite_start: failed to get window texture for window %ld\n", self->params.window);
return -1;
}
self->texture_size.x = 0;
self->texture_size.y = 0;
self->params.egl->glBindTexture(GL_TEXTURE_2D, window_texture_get_opengl_texture_id(&self->window_texture));
self->params.egl->glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &self->texture_size.x);
self->params.egl->glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &self->texture_size.y);
self->params.egl->glBindTexture(GL_TEXTURE_2D, 0);
self->texture_size.x = max_int(2, even_number_ceil(self->texture_size.x));
self->texture_size.y = max_int(2, even_number_ceil(self->texture_size.y));
video_codec_context->width = self->texture_size.x;
video_codec_context->height = self->texture_size.y;
if(self->params.region_size.x > 0 && self->params.region_size.y > 0) {
video_codec_context->width = max_int(2, even_number_ceil(self->params.region_size.x));
video_codec_context->height = max_int(2, even_number_ceil(self->params.region_size.y));
}
frame->width = video_codec_context->width;
frame->height = video_codec_context->height;
self->window_resize_timer = clock_get_monotonic_seconds();
return 0;
}
void gsr_capture_xcomposite_stop(gsr_capture_xcomposite *self, AVCodecContext *video_codec_context) {
window_texture_deinit(&self->window_texture);
if(video_codec_context->hw_device_ctx)
av_buffer_unref(&video_codec_context->hw_device_ctx);
if(video_codec_context->hw_frames_ctx)
av_buffer_unref(&video_codec_context->hw_frames_ctx);
gsr_capture_base_stop(&self->base, self->params.egl);
}
void gsr_capture_xcomposite_tick(gsr_capture_xcomposite *self, AVCodecContext *video_codec_context) {
//self->params.egl->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
self->params.egl->glClear(0);
bool init_new_window = false;
while(XPending(self->params.egl->x11.dpy)) {
XNextEvent(self->params.egl->x11.dpy, &self->xev);
switch(self->xev.type) {
case DestroyNotify: {
/* Window died (when not following focused window), so we stop recording */
if(!self->params.follow_focused && self->xev.xdestroywindow.window == self->window) {
self->should_stop = true;
self->stop_is_error = false;
}
break;
}
case Expose: {
/* Requires window texture recreate */
if(self->xev.xexpose.count == 0 && self->xev.xexpose.window == self->window) {
self->window_resize_timer = clock_get_monotonic_seconds();
self->window_resized = true;
}
break;
}
case ConfigureNotify: {
/* Window resized */
if(self->xev.xconfigure.window == self->window && (self->xev.xconfigure.width != self->window_size.x || self->xev.xconfigure.height != self->window_size.y)) {
self->window_size.x = max_int(self->xev.xconfigure.width, 0);
self->window_size.y = max_int(self->xev.xconfigure.height, 0);
self->window_resize_timer = clock_get_monotonic_seconds();
self->window_resized = true;
}
break;
}
case PropertyNotify: {
/* Focused window changed */
if(self->params.follow_focused && self->xev.xproperty.atom == self->net_active_window_atom) {
init_new_window = true;
}
break;
}
}
}
if(self->params.follow_focused && !self->follow_focused_initialized) {
init_new_window = true;
}
if(init_new_window) {
Window focused_window = get_focused_window(self->params.egl->x11.dpy, self->net_active_window_atom);
if(focused_window != self->window || !self->follow_focused_initialized) {
self->follow_focused_initialized = true;
XSelectInput(self->params.egl->x11.dpy, self->window, 0);
self->window = focused_window;
XSelectInput(self->params.egl->x11.dpy, self->window, StructureNotifyMask | ExposureMask);
XWindowAttributes attr;
attr.width = 0;
attr.height = 0;
if(!XGetWindowAttributes(self->params.egl->x11.dpy, self->window, &attr))
fprintf(stderr, "gsr error: gsr_capture_xcomposite_tick failed: invalid window id: %lu\n", self->window);
self->window_size.x = max_int(attr.width, 0);
self->window_size.y = max_int(attr.height, 0);
self->window_resized = true;
window_texture_deinit(&self->window_texture);
window_texture_init(&self->window_texture, self->params.egl->x11.dpy, self->window, self->params.egl); // TODO: Do not do the below window_texture_on_resize after this
self->texture_size.x = 0;
self->texture_size.y = 0;
self->params.egl->glBindTexture(GL_TEXTURE_2D, window_texture_get_opengl_texture_id(&self->window_texture));
self->params.egl->glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &self->texture_size.x);
self->params.egl->glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &self->texture_size.y);
self->params.egl->glBindTexture(GL_TEXTURE_2D, 0);
self->texture_size.x = min_int(video_codec_context->width, max_int(2, even_number_ceil(self->texture_size.x)));
self->texture_size.y = min_int(video_codec_context->height, max_int(2, even_number_ceil(self->texture_size.y)));
}
}
const double window_resize_timeout = 1.0; // 1 second
if(self->window_resized && clock_get_monotonic_seconds() - self->window_resize_timer >= window_resize_timeout) {
self->window_resized = false;
if(window_texture_on_resize(&self->window_texture) != 0) {
fprintf(stderr, "gsr error: gsr_capture_xcomposite_tick: window_texture_on_resize failed\n");
//self->should_stop = true;
//self->stop_is_error = true;
return;
}
self->texture_size.x = 0;
self->texture_size.y = 0;
self->params.egl->glBindTexture(GL_TEXTURE_2D, window_texture_get_opengl_texture_id(&self->window_texture));
self->params.egl->glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &self->texture_size.x);
self->params.egl->glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &self->texture_size.y);
self->params.egl->glBindTexture(GL_TEXTURE_2D, 0);
self->texture_size.x = min_int(video_codec_context->width, max_int(2, even_number_ceil(self->texture_size.x)));
self->texture_size.y = min_int(video_codec_context->height, max_int(2, even_number_ceil(self->texture_size.y)));
gsr_color_conversion_clear(&self->base.color_conversion);
}
}
bool gsr_capture_xcomposite_should_stop(gsr_capture_xcomposite *self, bool *err) {
if(self->should_stop) {
if(err)
*err = self->stop_is_error;
return true;
}
if(err)
*err = false;
return false;
}
int gsr_capture_xcomposite_capture(gsr_capture_xcomposite *self, AVFrame *frame) {
(void)frame;
const int target_x = max_int(0, frame->width / 2 - self->texture_size.x / 2);
const int target_y = max_int(0, frame->height / 2 - self->texture_size.y / 2);
gsr_color_conversion_draw(&self->base.color_conversion, window_texture_get_opengl_texture_id(&self->window_texture),
(vec2i){target_x, target_y}, self->texture_size,
(vec2i){0, 0}, self->texture_size,
0.0f, false);
self->params.egl->eglSwapBuffers(self->params.egl->egl_display, self->params.egl->egl_surface);
//self->params.egl->glFlush();
//self->params.egl->glFinish();
return 0;
}
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