root / ui / vnchextile.h @ 3e230dd2
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#define CONCAT_I(a, b) a ## b |
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#define CONCAT(a, b) CONCAT_I(a, b)
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#define pixel_t CONCAT(uint, CONCAT(BPP, _t))
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#ifdef GENERIC
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#define NAME CONCAT(generic_, BPP)
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#else
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#define NAME BPP
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#endif
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static void CONCAT(send_hextile_tile_, NAME)(VncState *vs, |
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int x, int y, int w, int h, |
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void *last_bg_,
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void *last_fg_,
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int *has_bg, int *has_fg) |
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{
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VncDisplay *vd = vs->vd; |
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uint8_t *row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds); |
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pixel_t *irow = (pixel_t *)row; |
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int j, i;
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pixel_t *last_bg = (pixel_t *)last_bg_; |
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pixel_t *last_fg = (pixel_t *)last_fg_; |
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pixel_t bg = 0;
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pixel_t fg = 0;
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int n_colors = 0; |
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int bg_count = 0; |
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int fg_count = 0; |
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int flags = 0; |
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uint8_t data[(vs->clientds.pf.bytes_per_pixel + 2) * 16 * 16]; |
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int n_data = 0; |
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int n_subtiles = 0; |
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for (j = 0; j < h; j++) { |
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for (i = 0; i < w; i++) { |
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switch (n_colors) {
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case 0: |
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bg = irow[i]; |
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n_colors = 1;
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break;
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case 1: |
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if (irow[i] != bg) {
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fg = irow[i]; |
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n_colors = 2;
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} |
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break;
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case 2: |
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if (irow[i] != bg && irow[i] != fg) {
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n_colors = 3;
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} else {
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if (irow[i] == bg)
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bg_count++; |
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else if (irow[i] == fg) |
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fg_count++; |
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} |
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break;
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default:
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break;
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} |
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} |
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if (n_colors > 2) |
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break;
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irow += ds_get_linesize(vs->ds) / sizeof(pixel_t);
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} |
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if (n_colors > 1 && fg_count > bg_count) { |
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pixel_t tmp = fg; |
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fg = bg; |
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bg = tmp; |
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} |
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if (!*has_bg || *last_bg != bg) {
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flags |= 0x02;
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*has_bg = 1;
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*last_bg = bg; |
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} |
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if (n_colors < 3 && (!*has_fg || *last_fg != fg)) { |
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flags |= 0x04;
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*has_fg = 1;
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*last_fg = fg; |
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} |
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switch (n_colors) {
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case 1: |
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n_data = 0;
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break;
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case 2: |
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flags |= 0x08;
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irow = (pixel_t *)row; |
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for (j = 0; j < h; j++) { |
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int min_x = -1; |
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for (i = 0; i < w; i++) { |
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if (irow[i] == fg) {
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if (min_x == -1) |
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min_x = i; |
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} else if (min_x != -1) { |
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hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1);
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n_data += 2;
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n_subtiles++; |
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min_x = -1;
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} |
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} |
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if (min_x != -1) { |
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hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1);
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n_data += 2;
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n_subtiles++; |
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} |
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irow += ds_get_linesize(vs->ds) / sizeof(pixel_t);
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} |
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break;
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case 3: |
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flags |= 0x18;
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irow = (pixel_t *)row; |
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if (!*has_bg || *last_bg != bg)
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flags |= 0x02;
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for (j = 0; j < h; j++) { |
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int has_color = 0; |
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int min_x = -1; |
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pixel_t color = 0; /* shut up gcc */ |
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for (i = 0; i < w; i++) { |
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if (!has_color) {
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if (irow[i] == bg)
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continue;
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color = irow[i]; |
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min_x = i; |
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has_color = 1;
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} else if (irow[i] != color) { |
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has_color = 0;
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#ifdef GENERIC
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vnc_convert_pixel(vs, data + n_data, color); |
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n_data += vs->clientds.pf.bytes_per_pixel; |
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#else
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memcpy(data + n_data, &color, sizeof(color));
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n_data += sizeof(pixel_t);
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#endif
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hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1);
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n_data += 2;
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n_subtiles++; |
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min_x = -1;
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if (irow[i] != bg) {
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color = irow[i]; |
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min_x = i; |
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has_color = 1;
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} |
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} |
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} |
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if (has_color) {
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#ifdef GENERIC
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vnc_convert_pixel(vs, data + n_data, color); |
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n_data += vs->clientds.pf.bytes_per_pixel; |
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#else
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memcpy(data + n_data, &color, sizeof(color));
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n_data += sizeof(pixel_t);
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#endif
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hextile_enc_cord(data + n_data, min_x, j, i - min_x, 1);
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n_data += 2;
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n_subtiles++; |
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} |
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irow += ds_get_linesize(vs->ds) / sizeof(pixel_t);
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} |
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/* A SubrectsColoured subtile invalidates the foreground color */
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*has_fg = 0;
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if (n_data > (w * h * sizeof(pixel_t))) { |
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n_colors = 4;
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flags = 0x01;
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*has_bg = 0;
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/* we really don't have to invalidate either the bg or fg
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but we've lost the old values. oh well. */
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} |
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default:
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break;
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} |
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if (n_colors > 3) { |
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flags = 0x01;
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*has_fg = 0;
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*has_bg = 0;
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n_colors = 4;
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} |
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vnc_write_u8(vs, flags); |
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if (n_colors < 4) { |
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if (flags & 0x02) |
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vs->write_pixels(vs, &vd->server->pf, last_bg, sizeof(pixel_t));
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if (flags & 0x04) |
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vs->write_pixels(vs, &vd->server->pf, last_fg, sizeof(pixel_t));
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if (n_subtiles) {
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vnc_write_u8(vs, n_subtiles); |
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vnc_write(vs, data, n_data); |
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} |
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} else {
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for (j = 0; j < h; j++) { |
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vs->write_pixels(vs, &vd->server->pf, row, |
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w * ds_get_bytes_per_pixel(vs->ds)); |
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row += ds_get_linesize(vs->ds); |
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} |
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} |
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} |
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#undef NAME
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#undef pixel_t
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#undef CONCAT_I
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#undef CONCAT
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