Remove cairo dependency, write raw pixels
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parent
b27b6cd69c
commit
a87f016017
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@ -26,5 +26,5 @@ executable(
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executable(
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'screenshot',
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'screenshot.c',
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dependencies: [wayland_client, wlr_protos, dependency('cairo')],
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dependencies: [wayland_client, wlr_protos],
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)
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@ -33,7 +33,6 @@
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#include <wayland-client.h>
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#include <limits.h>
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#include <sys/param.h>
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#include <cairo.h>
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#include <screenshooter-client-protocol.h>
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#include "../backend/wayland/os-compatibility.c"
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@ -174,11 +173,20 @@ create_shm_buffer(int width, int height, void **data_out)
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return buffer;
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}
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static void argb_to_rgba(uint32_t *data, size_t height, size_t stride) {
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size_t n = height*stride/4;
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for (size_t i = 0; i < n; ++i) {
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uint32_t v = data[i];
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uint32_t rgb = v & 0x00ffffff;
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uint32_t a = (v & 0xff000000) >> 24;
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data[i] = (rgb << 8) | a;
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}
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}
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static void
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write_png(int width, int height)
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{
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int output_stride, buffer_stride, i;
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cairo_surface_t *surface;
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void *data, *d, *s;
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struct screenshooter_output *output, *next;
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@ -203,11 +211,13 @@ write_png(int width, int height)
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free(output);
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}
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surface = cairo_image_surface_create_for_data(data,
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CAIRO_FORMAT_RGB24,
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width, height, buffer_stride);
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cairo_surface_write_to_png(surface, "wayland-screenshot.png");
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cairo_surface_destroy(surface);
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argb_to_rgba(data, height, buffer_stride);
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// TODO: call convert
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FILE *f = fopen("wayland-screenshot", "w");
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fwrite(data, buffer_stride * height, 1, f);
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fclose(f);
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free(data);
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}
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@ -71,6 +71,10 @@ void wlr_output_swap_buffers(struct wlr_output *output);
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void wlr_output_set_gamma(struct wlr_output *output,
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uint16_t size, uint16_t *r, uint16_t *g, uint16_t *b);
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uint16_t wlr_output_get_gamma_size(struct wlr_output *output);
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/**
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* Reads all pixels from the output and stores them as ARGB.
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*/
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void wlr_output_read_pixels(struct wlr_output *output, void *out_data);
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#endif
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@ -8,7 +8,6 @@
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#include <wlr/util/list.h>
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#include <wlr/util/log.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <wlr/render/matrix.h>
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#include <wlr/render/gles2.h>
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#include <wlr/render.h>
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@ -252,9 +251,19 @@ uint16_t wlr_output_get_gamma_size(struct wlr_output *output) {
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return output->impl->get_gamma_size(output);
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}
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void wlr_output_read_pixels(struct wlr_output *output, void *out_data) {
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// TODO: is wlr_output_make_current required?
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wlr_output_make_current(output);
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glReadPixels(0, 0, output->width, output->height, GL_BGRA_EXT,
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GL_UNSIGNED_BYTE, out_data);
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static void rgba_to_argb(uint32_t *data, size_t height, size_t stride) {
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size_t n = height*stride/4;
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for (size_t i = 0; i < n; ++i) {
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uint32_t v = data[i];
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uint32_t rgb = (v & 0xffffff00) >> 8;
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uint32_t a = v & 0x000000ff;
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data[i] = rgb | (a << 24);
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}
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}
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void wlr_output_read_pixels(struct wlr_output *output, void *out_data) {
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wlr_output_make_current(output);
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glReadPixels(0, 0, output->width, output->height, GL_RGBA, GL_UNSIGNED_BYTE,
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out_data);
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rgba_to_argb(out_data, output->height, output->width*4);
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}
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