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Merge pull request #598 from Ongy/screenshot_transform
Screenshot transform
This commit is contained in:
commit
a43555d7f5
1 changed files with 80 additions and 9 deletions
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@ -48,6 +48,7 @@ struct screenshooter_output {
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struct wl_output *output;
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struct wl_buffer *buffer;
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int width, height, offset_x, offset_y;
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enum wl_output_transform transform;
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void *data;
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struct wl_list link;
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};
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@ -60,6 +61,7 @@ static void output_handle_geometry(void *data, struct wl_output *wl_output,
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if (wl_output == output->output) {
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output->offset_x = x;
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output->offset_y = y;
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output->transform = transform;
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}
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}
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@ -159,14 +161,75 @@ static void write_image(const char *filename, int width, int height) {
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struct screenshooter_output *output, *next;
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wl_list_for_each_safe(output, next, &output_list, link) {
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int output_stride = output->width * 4;
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void *s = output->data;
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void *d = data + (output->offset_y - min_y) * buffer_stride +
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(output->offset_x - min_x) * 4;
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uint32_t *src = (uint32_t *)output->data;
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uint32_t *dst = (uint32_t *)(data +
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(output->offset_y - min_y) * buffer_stride +
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(output->offset_x - min_x) * 4);
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for (int i = 0; i < output->height; i++) {
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memcpy(d, s, output_stride);
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d += buffer_stride;
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s += output_stride;
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switch (output->transform) {
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case WL_OUTPUT_TRANSFORM_NORMAL:
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for (int i = 0; i < output->height; i++) {
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memcpy(dst, src, output_stride);
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dst += width;
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src += output->width;
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}
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break;
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case WL_OUTPUT_TRANSFORM_FLIPPED:
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for (int i = 0; i < output->height; ++i) {
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for (int j = 0; j < output->width; ++j) {
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dst[i * width + j] =
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src[i * output->width + output->width - 1 - j];
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}
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}
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break;
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case WL_OUTPUT_TRANSFORM_90:
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for (int i = 0; i < output->width; ++i) {
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for (int j = 0; j < output->height; ++j) {
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dst[i * width + j] =
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src[j * output->width + output->width - 1 - i];
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}
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}
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break;
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case WL_OUTPUT_TRANSFORM_FLIPPED_90:
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for (int i = 0; i < output->width; ++i) {
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for (int j = 0; j < output->height; ++j) {
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dst[i * width + j] =
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src[(output->height - 1 - j) * output->width + output->width - 1 - i];
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}
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}
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break;
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case WL_OUTPUT_TRANSFORM_180:
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for (int i = 0; i < output->height; ++i) {
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for (int j = 0; j < output->width; ++j) {
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dst[i * width + j] =
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src[(output->height - 1 - i) * output->width + output->width - 1 - j];
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}
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}
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break;
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case WL_OUTPUT_TRANSFORM_FLIPPED_180:
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for (int i = 0; i < output->height; ++i) {
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for (int j = 0; j < output->width; ++j) {
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dst[i * width + j] =
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src[(output->height - 1 - i) * output->width + j];
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}
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}
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break;
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case WL_OUTPUT_TRANSFORM_270:
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for (int i = 0; i < output->width; ++i) {
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for (int j = 0; j < output->height; ++j) {
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dst[i * width + j] =
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src[(output->height - 1 - j) * output->width + i];
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}
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}
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break;
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case WL_OUTPUT_TRANSFORM_FLIPPED_270:
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for (int i = 0; i < output->width; ++i) {
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for (int j = 0; j < output->height; ++j) {
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dst[i * width + j] =
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src[j * output->width + i];
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}
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}
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break;
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}
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free(output);
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@ -211,15 +274,23 @@ static void write_image(const char *filename, int width, int height) {
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}
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static int set_buffer_size(int *width, int *height) {
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int owidth, oheight;
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min_x = min_y = INT_MAX;
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max_x = max_y = INT_MIN;
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struct screenshooter_output *output;
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wl_list_for_each(output, &output_list, link) {
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if (output->transform & 0x1) {
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owidth = output->height;
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oheight = output->width;
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} else {
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owidth = output->width;
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oheight = output->height;
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}
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min_x = MIN(min_x, output->offset_x);
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min_y = MIN(min_y, output->offset_y);
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max_x = MAX(max_x, output->offset_x + output->width);
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max_y = MAX(max_y, output->offset_y + output->height);
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max_x = MAX(max_x, output->offset_x + owidth);
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max_y = MAX(max_y, output->offset_y + oheight);
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}
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if (max_x <= min_x || max_y <= min_y) {
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