| … | |
… | |
| 346 | rxvt_term::pixbuf_to_pixmap (GdkPixbuf *pixbuf, Pixmap pixmap, GC gc, |
346 | rxvt_term::pixbuf_to_pixmap (GdkPixbuf *pixbuf, Pixmap pixmap, GC gc, |
| 347 | int src_x, int src_y, int dst_x, int dst_y, |
347 | int src_x, int src_y, int dst_x, int dst_y, |
| 348 | unsigned int width, unsigned int height) |
348 | unsigned int width, unsigned int height) |
| 349 | { |
349 | { |
| 350 | XImage *ximage; |
350 | XImage *ximage; |
| 351 | char *data, *line; |
351 | char *line; |
| 352 | int bytes_per_pixel; |
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| 353 | int width_r, width_g, width_b, width_a; |
352 | int width_r, width_g, width_b, width_a; |
| 354 | int sh_r, sh_g, sh_b, sh_a; |
353 | int sh_r, sh_g, sh_b, sh_a; |
| 355 | uint32_t alpha_mask; |
354 | uint32_t alpha_mask; |
| 356 | int rowstride; |
355 | int rowstride; |
| 357 | int channels; |
356 | int channels; |
| … | |
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| 366 | alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha; |
365 | alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha; |
| 367 | else |
366 | else |
| 368 | #endif |
367 | #endif |
| 369 | alpha_mask = 0; |
368 | alpha_mask = 0; |
| 370 | |
369 | |
| 371 | if (depth == 24 || depth == 32) |
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| 372 | bytes_per_pixel = 4; |
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| 373 | else if (depth == 15 || depth == 16) |
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| 374 | bytes_per_pixel = 2; |
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| 375 | else |
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| 376 | return false; |
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| 377 | |
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| 378 | width_r = ecb_popcount32 (visual->red_mask); |
370 | width_r = ecb_popcount32 (visual->red_mask); |
| 379 | width_g = ecb_popcount32 (visual->green_mask); |
371 | width_g = ecb_popcount32 (visual->green_mask); |
| 380 | width_b = ecb_popcount32 (visual->blue_mask); |
372 | width_b = ecb_popcount32 (visual->blue_mask); |
| 381 | width_a = ecb_popcount32 (alpha_mask); |
373 | width_a = ecb_popcount32 (alpha_mask); |
| 382 | |
374 | |
| … | |
… | |
| 386 | sh_r = ecb_ctz32 (visual->red_mask); |
378 | sh_r = ecb_ctz32 (visual->red_mask); |
| 387 | sh_g = ecb_ctz32 (visual->green_mask); |
379 | sh_g = ecb_ctz32 (visual->green_mask); |
| 388 | sh_b = ecb_ctz32 (visual->blue_mask); |
380 | sh_b = ecb_ctz32 (visual->blue_mask); |
| 389 | sh_a = ecb_ctz32 (alpha_mask); |
381 | sh_a = ecb_ctz32 (alpha_mask); |
| 390 | |
382 | |
| 391 | if (width > INT_MAX / height / bytes_per_pixel) |
383 | if (width > 32767 || height > 32767) |
| 392 | return false; |
384 | return false; |
| 393 | |
385 | |
| 394 | data = (char *)malloc (width * height * bytes_per_pixel); |
386 | ximage = XCreateImage (dpy, visual, depth, ZPixmap, 0, 0, |
| 395 | if (!data) |
387 | width, height, 32, 0); |
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388 | if (!ximage) |
| 396 | return false; |
389 | return false; |
| 397 | |
390 | |
| 398 | ximage = XCreateImage (dpy, visual, depth, ZPixmap, 0, data, |
391 | if (height > INT_MAX / ximage->bytes_per_line |
| 399 | width, height, bytes_per_pixel * 8, 0); |
392 | || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line))) |
| 400 | if (!ximage) |
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|
| 401 | { |
393 | { |
| 402 | free (data); |
394 | XDestroyImage (ximage); |
| 403 | return false; |
395 | return false; |
| 404 | } |
396 | } |
| 405 | |
397 | |
| 406 | ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
398 | ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
| 407 | |
399 | |
| 408 | rowstride = gdk_pixbuf_get_rowstride (pixbuf); |
400 | rowstride = gdk_pixbuf_get_rowstride (pixbuf); |
| 409 | channels = gdk_pixbuf_get_n_channels (pixbuf); |
401 | channels = gdk_pixbuf_get_n_channels (pixbuf); |
| 410 | row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels; |
402 | row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels; |
| 411 | line = data; |
403 | line = ximage->data; |
| 412 | |
404 | |
| 413 | rgba c (0, 0, 0); |
405 | rgba c (0, 0, 0); |
| 414 | |
406 | |
| 415 | if (channels == 4 && alpha_mask == 0) |
407 | if (channels == 4 && alpha_mask == 0) |
| 416 | { |
408 | { |
| … | |
… | |
| 446 | value = ((r >> (8 - width_r)) << sh_r) |
438 | value = ((r >> (8 - width_r)) << sh_r) |
| 447 | | ((g >> (8 - width_g)) << sh_g) |
439 | | ((g >> (8 - width_g)) << sh_g) |
| 448 | | ((b >> (8 - width_b)) << sh_b) |
440 | | ((b >> (8 - width_b)) << sh_b) |
| 449 | | ((a >> (8 - width_a)) << sh_a); |
441 | | ((a >> (8 - width_a)) << sh_a); |
| 450 | |
442 | |
| 451 | if (bytes_per_pixel == 4) |
443 | if (ximage->bits_per_pixel == 32) |
| 452 | ((uint32_t *)line)[x] = value; |
444 | ((uint32_t *)line)[x] = value; |
| 453 | else |
445 | else |
| 454 | ((uint16_t *)line)[x] = value; |
446 | XPutPixel (ximage, x, y, value); |
| 455 | } |
447 | } |
| 456 | |
448 | |
| 457 | row += rowstride; |
449 | row += rowstride; |
| 458 | line += ximage->bytes_per_line; |
450 | line += ximage->bytes_per_line; |
| 459 | } |
451 | } |
