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726 lines
18 KiB
726 lines
18 KiB
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdarg.h>
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#include <i915_drm.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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#include <cairo.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <glib.h>
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#include <png.h>
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#include <math.h>
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#include "wayland.h"
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#include "cairo-util.h"
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#include <GL/gl.h>
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#include <eagle.h>
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#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
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struct egl_compositor {
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struct wl_compositor base;
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EGLDisplay display;
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EGLSurface surface;
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EGLContext context;
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EGLConfig config;
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struct wl_display *wl_display;
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int gem_fd;
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int width, height;
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struct egl_surface *pointer;
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struct egl_surface *background;
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struct egl_surface *overlay;
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};
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struct egl_surface {
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GLuint texture;
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struct wl_map map;
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EGLSurface surface;
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};
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static void
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die(const char *msg, ...)
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{
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va_list ap;
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va_start (ap, msg);
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vfprintf(stderr, msg, ap);
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va_end (ap);
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exit(EXIT_FAILURE);
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}
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static void
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stdio_write_func (png_structp png, png_bytep data, png_size_t size)
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{
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FILE *fp;
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size_t ret;
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fp = png_get_io_ptr (png);
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while (size) {
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ret = fwrite (data, 1, size, fp);
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size -= ret;
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data += ret;
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if (size && ferror (fp))
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die("write: %m\n");
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}
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}
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static void
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png_simple_output_flush_fn (png_structp png_ptr)
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{
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}
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static void
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png_simple_error_callback (png_structp png,
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png_const_charp error_msg)
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{
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die("png error: %s\n", error_msg);
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}
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static void
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png_simple_warning_callback (png_structp png,
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png_const_charp error_msg)
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{
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fprintf(stderr, "png warning: %s\n", error_msg);
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}
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static void
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convert_pixels(png_structp png, png_row_infop row_info, png_bytep data)
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{
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unsigned int i;
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for (i = 0; i < row_info->rowbytes; i += 4) {
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uint8_t *b = &data[i];
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uint32_t pixel;
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memcpy (&pixel, b, sizeof (uint32_t));
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b[0] = (pixel & 0xff0000) >> 16;
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b[1] = (pixel & 0x00ff00) >> 8;
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b[2] = (pixel & 0x0000ff) >> 0;
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b[3] = 0;
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}
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}
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struct screenshooter {
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struct wl_object base;
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struct egl_compositor *ec;
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};
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static void
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screenshooter_shoot(struct wl_client *client, struct screenshooter *shooter)
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{
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struct egl_compositor *ec = shooter->ec;
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png_struct *png;
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png_info *info;
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png_byte **volatile rows = NULL;
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png_color_16 white;
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int depth, i;
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FILE *fp;
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uint8_t *data;
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GLuint stride;
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static const char filename[] = "wayland-screenshot.png";
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data = eglReadBuffer(ec->display, ec->surface, GL_FRONT_LEFT, &stride);
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if (data == NULL)
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die("eglReadBuffer failed\n");
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rows = malloc(ec->height * sizeof rows[0]);
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if (rows == NULL)
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die("malloc failed\n");
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for (i = 0; i < ec->height; i++)
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rows[i] = (png_byte *) data + i * stride;
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png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL,
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png_simple_error_callback,
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png_simple_warning_callback);
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if (png == NULL)
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die("png_create_write_struct failed\n");
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info = png_create_info_struct(png);
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if (info == NULL)
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die("png_create_info_struct failed\n");
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fp = fopen(filename, "w");
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if (fp == NULL)
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die("fopen failed: %m\n");
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png_set_write_fn(png, fp, stdio_write_func, png_simple_output_flush_fn);
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depth = 8;
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png_set_IHDR(png, info,
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ec->width,
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ec->height, depth,
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PNG_COLOR_TYPE_RGB,
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PNG_INTERLACE_NONE,
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PNG_COMPRESSION_TYPE_DEFAULT,
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PNG_FILTER_TYPE_DEFAULT);
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white.gray = (1 << depth) - 1;
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white.red = white.blue = white.green = white.gray;
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png_set_bKGD(png, info, &white);
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png_write_info (png, info);
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png_set_write_user_transform_fn(png, convert_pixels);
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png_set_filler(png, 0, PNG_FILLER_AFTER);
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png_write_image(png, rows);
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png_write_end(png, info);
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png_destroy_write_struct(&png, &info);
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fclose(fp);
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free(rows);
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free(data);
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}
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static const struct wl_method screenshooter_methods[] = {
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{ "shoot", screenshooter_shoot, 0, NULL }
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};
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static const struct wl_interface screenshooter_interface = {
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"screenshooter", 1,
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ARRAY_LENGTH(screenshooter_methods),
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screenshooter_methods,
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};
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static struct screenshooter *
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screenshooter_create(struct egl_compositor *ec)
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{
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struct screenshooter *shooter;
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shooter = malloc(sizeof *shooter);
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if (shooter == NULL)
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return NULL;
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shooter->base.interface = &screenshooter_interface;
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shooter->ec = ec;
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return shooter;
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};
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static struct egl_surface *
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egl_surface_create_from_cairo_surface(cairo_surface_t *surface,
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int x, int y, int width, int height)
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{
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struct egl_surface *es;
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int stride;
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void *data;
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stride = cairo_image_surface_get_stride(surface);
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data = cairo_image_surface_get_data(surface);
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es = malloc(sizeof *es);
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if (es == NULL)
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return NULL;
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glGenTextures(1, &es->texture);
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glBindTexture(GL_TEXTURE_2D, es->texture);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
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GL_BGRA, GL_UNSIGNED_BYTE, data);
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es->map.x = x;
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es->map.y = y;
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es->map.width = width;
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es->map.height = height;
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es->surface = EGL_NO_SURFACE;
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return es;
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}
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static void
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egl_surface_destroy(struct egl_surface *es, struct egl_compositor *ec)
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{
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glDeleteTextures(1, &es->texture);
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if (es->surface != EGL_NO_SURFACE)
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eglDestroySurface(ec->display, es->surface);
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free(es);
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}
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static void
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pointer_path(cairo_t *cr, int x, int y)
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{
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const int end = 3, tx = 4, ty = 12, dx = 5, dy = 10;
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const int width = 16, height = 16;
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cairo_move_to(cr, x, y);
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cairo_line_to(cr, x + tx, y + ty);
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cairo_line_to(cr, x + dx, y + dy);
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cairo_line_to(cr, x + width - end, y + height);
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cairo_line_to(cr, x + width, y + height - end);
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cairo_line_to(cr, x + dy, y + dx);
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cairo_line_to(cr, x + ty, y + tx);
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cairo_close_path(cr);
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}
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static struct egl_surface *
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pointer_create(int x, int y, int width, int height)
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{
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struct egl_surface *es;
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const int hotspot_x = 16, hotspot_y = 16;
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cairo_surface_t *surface;
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cairo_t *cr;
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surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
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width, height);
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cr = cairo_create(surface);
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pointer_path(cr, hotspot_x + 5, hotspot_y + 4);
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cairo_set_line_width (cr, 2);
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cairo_set_source_rgb(cr, 0, 0, 0);
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cairo_stroke_preserve(cr);
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cairo_fill(cr);
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blur_surface(surface, width);
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pointer_path(cr, hotspot_x, hotspot_y);
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cairo_stroke_preserve(cr);
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cairo_set_source_rgb(cr, 1, 1, 1);
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cairo_fill(cr);
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cairo_destroy(cr);
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es = egl_surface_create_from_cairo_surface(surface, x, y, width, height);
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cairo_surface_destroy(surface);
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return es;
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}
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static struct egl_surface *
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background_create(const char *filename, int width, int height)
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{
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struct egl_surface *background;
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GdkPixbuf *pixbuf;
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GError *error = NULL;
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int pixbuf_width, pixbuf_height;
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void *data;
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background = malloc(sizeof *background);
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if (background == NULL)
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return NULL;
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g_type_init();
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pixbuf = gdk_pixbuf_new_from_file(filename, &error);
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if (error != NULL) {
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free(background);
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return NULL;
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}
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pixbuf_width = gdk_pixbuf_get_width(pixbuf);
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pixbuf_height = gdk_pixbuf_get_height(pixbuf);
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data = gdk_pixbuf_get_pixels(pixbuf);
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glGenTextures(1, &background->texture);
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glBindTexture(GL_TEXTURE_2D, background->texture);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, pixbuf_width, pixbuf_height, 0,
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GL_BGR, GL_UNSIGNED_BYTE, data);
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background->map.x = 0;
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background->map.y = 0;
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background->map.width = width;
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background->map.height = height;
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background->surface = EGL_NO_SURFACE;
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return background;
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}
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static void
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rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius)
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{
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cairo_move_to(cr, x0, y0 + radius);
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cairo_arc(cr, x0 + radius, y0 + radius, radius, M_PI, 3 * M_PI / 2);
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cairo_line_to(cr, x1 - radius, y0);
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cairo_arc(cr, x1 - radius, y0 + radius, radius, 3 * M_PI / 2, 2 * M_PI);
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cairo_line_to(cr, x1, y1 - radius);
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cairo_arc(cr, x1 - radius, y1 - radius, radius, 0, M_PI / 2);
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cairo_line_to(cr, x0 + radius, y1);
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cairo_arc(cr, x0 + radius, y1 - radius, radius, M_PI / 2, M_PI);
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cairo_close_path(cr);
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}
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static void
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draw_button(cairo_t *cr, int x, int y, int width, int height, const char *text)
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{
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cairo_pattern_t *gradient;
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cairo_text_extents_t extents;
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double bright = 0.15, dim = 0.02;
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int radius = 10;
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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cairo_set_line_width (cr, 2);
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rounded_rect(cr, x, y, x + width, y + height, radius);
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cairo_set_source_rgb(cr, dim, dim, dim);
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cairo_stroke(cr);
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rounded_rect(cr, x + 2, y + 2, x + width, y + height, radius);
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cairo_set_source_rgb(cr, 0.1, 0.1, 0.1);
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cairo_stroke(cr);
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rounded_rect(cr, x + 1, y + 1, x + width - 1, y + height - 1, radius - 1);
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cairo_set_source_rgb(cr, bright, bright, bright);
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cairo_stroke(cr);
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rounded_rect(cr, x + 3, y + 3, x + width - 1, y + height - 1, radius - 1);
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cairo_set_source_rgb(cr, dim, dim, dim);
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cairo_stroke(cr);
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rounded_rect(cr, x + 1, y + 1, x + width - 1, y + height - 1, radius - 1);
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gradient = cairo_pattern_create_linear (0, y, 0, y + height);
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cairo_pattern_add_color_stop_rgb(gradient, 0, 0.15, 0.15, 0.15);
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cairo_pattern_add_color_stop_rgb(gradient, 0.5, 0.08, 0.08, 0.08);
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cairo_pattern_add_color_stop_rgb(gradient, 0.5, 0.07, 0.07, 0.07);
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cairo_pattern_add_color_stop_rgb(gradient, 1, 0.1, 0.1, 0.1);
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cairo_set_source(cr, gradient);
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cairo_fill(cr);
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cairo_set_font_size(cr, 16);
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cairo_text_extents(cr, text, &extents);
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cairo_move_to(cr, x + (width - extents.width) / 2, y + (height - extents.height) / 2 - extents.y_bearing);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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cairo_set_line_width (cr, 4);
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cairo_text_path(cr, text);
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cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
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cairo_stroke_preserve(cr);
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cairo_set_source_rgb(cr, 1, 1, 1);
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cairo_fill(cr);
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}
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static struct egl_surface *
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overlay_create(int x, int y, int width, int height)
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{
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struct egl_surface *es;
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cairo_surface_t *surface;
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cairo_t *cr;
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int total_width, button_x, button_y;
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const int button_width = 150;
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const int button_height = 40;
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const int spacing = 50;
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surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
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width, height);
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cr = cairo_create(surface);
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cairo_set_source_rgba(cr, 0.1, 0.1, 0.1, 0.8);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_paint(cr);
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total_width = button_width * 2 + spacing;
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button_x = (width - total_width) / 2;
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button_y = height - button_height - 20;
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draw_button(cr, button_x, button_y, button_width, button_height, "Previous");
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button_x += button_width + spacing;
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draw_button(cr, button_x, button_y, button_width, button_height, "Next");
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cairo_destroy(cr);
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es = egl_surface_create_from_cairo_surface(surface, x, y, width, height);
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cairo_surface_destroy(surface);
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return es;
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}
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static void
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draw_surface(struct egl_surface *es)
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{
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GLint vertices[12];
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GLint tex_coords[12] = { 0, 0, 0, 1, 1, 0, 1, 1 };
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GLuint indices[4] = { 0, 1, 2, 3 };
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vertices[0] = es->map.x;
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vertices[1] = es->map.y;
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vertices[2] = 0;
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vertices[3] = es->map.x;
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vertices[4] = es->map.y + es->map.height;
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vertices[5] = 0;
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vertices[6] = es->map.x + es->map.width;
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vertices[7] = es->map.y;
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vertices[8] = 0;
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vertices[9] = es->map.x + es->map.width;
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vertices[10] = es->map.y + es->map.height;
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vertices[11] = 0;
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glBindTexture(GL_TEXTURE_2D, es->texture);
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glEnable(GL_TEXTURE_2D);
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glEnable(GL_BLEND);
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/* Assume pre-multiplied alpha for now, this probably
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* needs to be a wayland visual type of thing. */
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glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glVertexPointer(3, GL_INT, 0, vertices);
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glTexCoordPointer(2, GL_INT, 0, tex_coords);
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glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_INT, indices);
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}
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static void
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repaint(void *data)
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{
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struct egl_compositor *ec = data;
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struct wl_surface_iterator *iterator;
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struct wl_surface *surface;
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struct egl_surface *es;
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draw_surface(ec->background);
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iterator = wl_surface_iterator_create(ec->wl_display, 0);
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while (wl_surface_iterator_next(iterator, &surface)) {
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es = wl_surface_get_data(surface);
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if (es == NULL)
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continue;
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draw_surface(es);
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}
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wl_surface_iterator_destroy(iterator);
|
|
|
|
draw_surface(ec->overlay);
|
|
|
|
draw_surface(ec->pointer);
|
|
|
|
eglSwapBuffers(ec->display, ec->surface);
|
|
}
|
|
|
|
static void
|
|
schedule_repaint(struct egl_compositor *ec)
|
|
{
|
|
struct wl_event_loop *loop;
|
|
|
|
loop = wl_display_get_event_loop(ec->wl_display);
|
|
wl_event_loop_add_idle(loop, repaint, ec);
|
|
}
|
|
|
|
static void
|
|
notify_surface_create(struct wl_compositor *compositor,
|
|
struct wl_surface *surface)
|
|
{
|
|
struct egl_surface *es;
|
|
|
|
es = malloc(sizeof *es);
|
|
if (es == NULL)
|
|
return;
|
|
|
|
es->surface = EGL_NO_SURFACE;
|
|
wl_surface_set_data(surface, es);
|
|
|
|
glGenTextures(1, &es->texture);
|
|
}
|
|
|
|
static void
|
|
notify_surface_destroy(struct wl_compositor *compositor,
|
|
struct wl_surface *surface)
|
|
{
|
|
struct egl_compositor *ec = (struct egl_compositor *) compositor;
|
|
struct egl_surface *es;
|
|
|
|
es = wl_surface_get_data(surface);
|
|
if (es == NULL)
|
|
return;
|
|
|
|
egl_surface_destroy(es, ec);
|
|
|
|
schedule_repaint(ec);
|
|
}
|
|
|
|
static void
|
|
notify_surface_attach(struct wl_compositor *compositor,
|
|
struct wl_surface *surface, uint32_t name,
|
|
uint32_t width, uint32_t height, uint32_t stride)
|
|
{
|
|
struct egl_compositor *ec = (struct egl_compositor *) compositor;
|
|
struct egl_surface *es;
|
|
|
|
es = wl_surface_get_data(surface);
|
|
if (es == NULL)
|
|
return;
|
|
|
|
if (es->surface != EGL_NO_SURFACE)
|
|
eglDestroySurface(ec->display, es->surface);
|
|
|
|
/* FIXME: We need to use a single buffer config without depth
|
|
* or stencil buffers here to keep egl from creating auxillary
|
|
* buffers for the pixmap here. */
|
|
es->surface = eglCreateSurfaceForName(ec->display, ec->config,
|
|
name, width, height, stride, NULL);
|
|
|
|
glBindTexture(GL_TEXTURE_2D, es->texture);
|
|
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
eglBindTexImage(ec->display, es->surface, GL_TEXTURE_2D);
|
|
|
|
schedule_repaint(ec);
|
|
}
|
|
|
|
static void
|
|
notify_surface_map(struct wl_compositor *compositor,
|
|
struct wl_surface *surface, struct wl_map *map)
|
|
{
|
|
struct egl_compositor *ec = (struct egl_compositor *) compositor;
|
|
struct egl_surface *es;
|
|
|
|
es = wl_surface_get_data(surface);
|
|
if (es == NULL)
|
|
return;
|
|
|
|
es->map = *map;
|
|
|
|
schedule_repaint(ec);
|
|
}
|
|
|
|
static void
|
|
notify_surface_copy(struct wl_compositor *compositor,
|
|
struct wl_surface *surface,
|
|
int32_t dst_x, int32_t dst_y,
|
|
uint32_t name, uint32_t stride,
|
|
int32_t x, int32_t y, int32_t width, int32_t height)
|
|
{
|
|
struct egl_compositor *ec = (struct egl_compositor *) compositor;
|
|
EGLSurface src;
|
|
struct egl_surface *es;
|
|
|
|
es = wl_surface_get_data(surface);
|
|
|
|
/* FIXME: glCopyPixels should work, but then we'll have to
|
|
* call eglMakeCurrent to set up the src and dest surfaces
|
|
* first. This seems cheaper, but maybe there's a better way
|
|
* to accomplish this. */
|
|
|
|
src = eglCreateSurfaceForName(ec->display, ec->config,
|
|
name, x + width, y + height, stride, NULL);
|
|
|
|
eglCopyNativeBuffers(ec->display, es->surface, GL_FRONT_LEFT, dst_x, dst_y,
|
|
src, GL_FRONT_LEFT, x, y, width, height);
|
|
schedule_repaint(ec);
|
|
}
|
|
|
|
static void
|
|
notify_surface_damage(struct wl_compositor *compositor,
|
|
struct wl_surface *surface,
|
|
int32_t x, int32_t y, int32_t width, int32_t height)
|
|
{
|
|
struct egl_compositor *ec = (struct egl_compositor *) compositor;
|
|
|
|
/* FIXME: This need to take a damage region, of course. */
|
|
schedule_repaint(ec);
|
|
}
|
|
|
|
static void
|
|
notify_pointer_motion(struct wl_compositor *compositor,
|
|
struct wl_object *source, int x, int y)
|
|
{
|
|
struct egl_compositor *ec = (struct egl_compositor *) compositor;
|
|
|
|
ec->pointer->map.x = x;
|
|
ec->pointer->map.y = y;
|
|
schedule_repaint(ec);
|
|
}
|
|
|
|
static const struct wl_compositor_interface interface = {
|
|
notify_surface_create,
|
|
notify_surface_destroy,
|
|
notify_surface_attach,
|
|
notify_surface_map,
|
|
notify_surface_copy,
|
|
notify_surface_damage,
|
|
notify_pointer_motion
|
|
};
|
|
|
|
static const char gem_device[] = "/dev/dri/card0";
|
|
|
|
WL_EXPORT struct wl_compositor *
|
|
wl_compositor_create(struct wl_display *display)
|
|
{
|
|
EGLConfig configs[64];
|
|
EGLint major, minor, count;
|
|
struct egl_compositor *ec;
|
|
const char *filename;
|
|
struct screenshooter *shooter;
|
|
|
|
ec = malloc(sizeof *ec);
|
|
if (ec == NULL)
|
|
return NULL;
|
|
|
|
ec->width = 1280;
|
|
ec->height = 800;
|
|
|
|
ec->base.interface = &interface;
|
|
ec->wl_display = display;
|
|
|
|
ec->display = eglCreateDisplayNative(gem_device, "i965");
|
|
if (ec->display == NULL) {
|
|
fprintf(stderr, "failed to create display\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!eglInitialize(ec->display, &major, &minor)) {
|
|
fprintf(stderr, "failed to initialize display\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!eglGetConfigs(ec->display, configs, ARRAY_LENGTH(configs), &count)) {
|
|
fprintf(stderr, "failed to get configs\n");
|
|
return NULL;
|
|
}
|
|
|
|
ec->config = configs[24];
|
|
ec->surface = eglCreateSurfaceNative(ec->display, ec->config,
|
|
0, 0, ec->width, ec->height);
|
|
if (ec->surface == NULL) {
|
|
fprintf(stderr, "failed to create surface\n");
|
|
return NULL;
|
|
}
|
|
|
|
ec->context = eglCreateContext(ec->display, ec->config, NULL, NULL);
|
|
if (ec->context == NULL) {
|
|
fprintf(stderr, "failed to create context\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!eglMakeCurrent(ec->display, ec->surface, ec->surface, ec->context)) {
|
|
fprintf(stderr, "failed to make context current\n");
|
|
return NULL;
|
|
}
|
|
|
|
glViewport(0, 0, ec->width, ec->height);
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glOrtho(0, ec->width, ec->height, 0, 0, 1000.0);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glClearColor(0.0, 0.05, 0.2, 0.0);
|
|
|
|
filename = getenv("WAYLAND_BACKGROUND");
|
|
if (filename == NULL)
|
|
filename = "background.jpg";
|
|
ec->background = background_create(filename, 1280, 800);
|
|
ec->pointer = pointer_create(100, 100, 64, 64);
|
|
ec->overlay = overlay_create(0, ec->height - 200, ec->width, 200);
|
|
|
|
ec->gem_fd = open(gem_device, O_RDWR);
|
|
if (ec->gem_fd < 0) {
|
|
fprintf(stderr, "failed to open drm device\n");
|
|
return NULL;
|
|
}
|
|
|
|
shooter = screenshooter_create(ec);
|
|
wl_display_add_object(display, &shooter->base);
|
|
wl_display_add_global(display, &shooter->base);
|
|
|
|
schedule_repaint(ec);
|
|
|
|
return &ec->base;
|
|
}
|
|
|