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authoremersion <contact@emersion.fr>2017-10-07 19:01:11 +0200
committeremersion <contact@emersion.fr>2017-10-07 19:01:11 +0200
commita87f0160174487a1bbb1280597b73d36755542de (patch)
treecc29188720df37ac0166b7cdedea190a65393e36 /examples
parentb27b6cd69c25284541b8ec585ddbc5f0294f52e6 (diff)
Remove cairo dependency, write raw pixels
Diffstat (limited to 'examples')
-rw-r--r--examples/meson.build2
-rw-r--r--examples/screenshot.c24
2 files changed, 18 insertions, 8 deletions
diff --git a/examples/meson.build b/examples/meson.build
index 292ab053..a29a3310 100644
--- a/examples/meson.build
+++ b/examples/meson.build
@@ -26,5 +26,5 @@ executable(
executable(
'screenshot',
'screenshot.c',
- dependencies: [wayland_client, wlr_protos, dependency('cairo')],
+ dependencies: [wayland_client, wlr_protos],
)
diff --git a/examples/screenshot.c b/examples/screenshot.c
index f70b9b56..253638c9 100644
--- a/examples/screenshot.c
+++ b/examples/screenshot.c
@@ -33,7 +33,6 @@
#include <wayland-client.h>
#include <limits.h>
#include <sys/param.h>
-#include <cairo.h>
#include <screenshooter-client-protocol.h>
#include "../backend/wayland/os-compatibility.c"
@@ -174,11 +173,20 @@ create_shm_buffer(int width, int height, void **data_out)
return buffer;
}
+static void argb_to_rgba(uint32_t *data, size_t height, size_t stride) {
+ size_t n = height*stride/4;
+ for (size_t i = 0; i < n; ++i) {
+ uint32_t v = data[i];
+ uint32_t rgb = v & 0x00ffffff;
+ uint32_t a = (v & 0xff000000) >> 24;
+ data[i] = (rgb << 8) | a;
+ }
+}
+
static void
write_png(int width, int height)
{
int output_stride, buffer_stride, i;
- cairo_surface_t *surface;
void *data, *d, *s;
struct screenshooter_output *output, *next;
@@ -203,11 +211,13 @@ write_png(int width, int height)
free(output);
}
- surface = cairo_image_surface_create_for_data(data,
- CAIRO_FORMAT_RGB24,
- width, height, buffer_stride);
- cairo_surface_write_to_png(surface, "wayland-screenshot.png");
- cairo_surface_destroy(surface);
+ argb_to_rgba(data, height, buffer_stride);
+
+ // TODO: call convert
+ FILE *f = fopen("wayland-screenshot", "w");
+ fwrite(data, buffer_stride * height, 1, f);
+ fclose(f);
+
free(data);
}