diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/screenshot.c | 91 |
1 files changed, 81 insertions, 10 deletions
diff --git a/examples/screenshot.c b/examples/screenshot.c index ba225023..7de2ab8e 100644 --- a/examples/screenshot.c +++ b/examples/screenshot.c @@ -48,6 +48,7 @@ struct screenshooter_output { struct wl_output *output; struct wl_buffer *buffer; int width, height, offset_x, offset_y; + enum wl_output_transform transform; void *data; struct wl_list link; }; @@ -60,6 +61,7 @@ static void output_handle_geometry(void *data, struct wl_output *wl_output, if (wl_output == output->output) { output->offset_x = x; output->offset_y = y; + output->transform = transform; } } @@ -159,14 +161,75 @@ static void write_image(const char *filename, int width, int height) { struct screenshooter_output *output, *next; wl_list_for_each_safe(output, next, &output_list, link) { int output_stride = output->width * 4; - void *s = output->data; - void *d = data + (output->offset_y - min_y) * buffer_stride + - (output->offset_x - min_x) * 4; - - for (int i = 0; i < output->height; i++) { - memcpy(d, s, output_stride); - d += buffer_stride; - s += output_stride; + uint32_t *src = (uint32_t *)output->data; + uint32_t *dst = (uint32_t *)(data + + (output->offset_y - min_y) * buffer_stride + + (output->offset_x - min_x) * 4); + + switch (output->transform) { + case WL_OUTPUT_TRANSFORM_NORMAL: + for (int i = 0; i < output->height; i++) { + memcpy(dst, src, output_stride); + dst += width; + src += output->width; + } + break; + case WL_OUTPUT_TRANSFORM_FLIPPED: + for (int i = 0; i < output->height; ++i) { + for (int j = 0; j < output->width; ++j) { + dst[i * width + j] = + src[i * output->width + output->width - 1 - j]; + } + } + break; + case WL_OUTPUT_TRANSFORM_90: + for (int i = 0; i < output->width; ++i) { + for (int j = 0; j < output->height; ++j) { + dst[i * width + j] = + src[j * output->width + output->width - 1 - i]; + } + } + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + for (int i = 0; i < output->width; ++i) { + for (int j = 0; j < output->height; ++j) { + dst[i * width + j] = + src[(output->height - 1 - j) * output->width + output->width - 1 - i]; + } + } + break; + case WL_OUTPUT_TRANSFORM_180: + for (int i = 0; i < output->height; ++i) { + for (int j = 0; j < output->width; ++j) { + dst[i * width + j] = + src[(output->height - 1 - i) * output->width + output->width - 1 - j]; + } + } + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_180: + for (int i = 0; i < output->height; ++i) { + for (int j = 0; j < output->width; ++j) { + dst[i * width + j] = + src[(output->height - 1 - i) * output->width + j]; + } + } + break; + case WL_OUTPUT_TRANSFORM_270: + for (int i = 0; i < output->width; ++i) { + for (int j = 0; j < output->height; ++j) { + dst[i * width + j] = + src[(output->height - 1 - j) * output->width + i]; + } + } + break; + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + for (int i = 0; i < output->width; ++i) { + for (int j = 0; j < output->height; ++j) { + dst[i * width + j] = + src[j * output->width + i]; + } + } + break; } free(output); @@ -211,15 +274,23 @@ static void write_image(const char *filename, int width, int height) { } static int set_buffer_size(int *width, int *height) { + int owidth, oheight; min_x = min_y = INT_MAX; max_x = max_y = INT_MIN; struct screenshooter_output *output; wl_list_for_each(output, &output_list, link) { + if (output->transform & 0x1) { + owidth = output->height; + oheight = output->width; + } else { + owidth = output->width; + oheight = output->height; + } min_x = MIN(min_x, output->offset_x); min_y = MIN(min_y, output->offset_y); - max_x = MAX(max_x, output->offset_x + output->width); - max_y = MAX(max_y, output->offset_y + output->height); + max_x = MAX(max_x, output->offset_x + owidth); + max_y = MAX(max_y, output->offset_y + oheight); } if (max_x <= min_x || max_y <= min_y) { |