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commit 6e824825b32a4d3ed3fc9b7e41dee600d010b093 Author: Cyril Hrubis metan@ucw.cz Date: Thu Sep 22 21:31:53 2011 +0200
Add support for png 1BPP palette (eg. black&white).
diff --git a/libs/loaders/GP_PNG.c b/libs/loaders/GP_PNG.c index a533287..50395b4 100644 --- a/libs/loaders/GP_PNG.c +++ b/libs/loaders/GP_PNG.c @@ -108,7 +108,8 @@ GP_RetCode GP_ReadPNG(FILE *f, GP_Context **res) png_get_IHDR(png, png_info, &w, &h, &depth, &color_type, NULL, NULL, NULL);
- GP_DEBUG(2, "Have %s PNG%s size %ux%u depth %i", + GP_DEBUG(2, "Have %s%s PNG%s size %ux%u depth %i", + color_type & PNG_COLOR_MASK_PALETTE ? "pallete " : "", color_type & PNG_COLOR_MASK_COLOR ? "color" : "gray", color_type & PNG_COLOR_MASK_ALPHA ? " with alpha channel" : "", w, h, depth); @@ -140,6 +141,17 @@ GP_RetCode GP_ReadPNG(FILE *f, GP_Context **res) break; } break; + case PNG_COLOR_TYPE_PALETTE: + /* Grayscale with BPP < 8 is usually saved as palette */ + if (png_get_channels(png, png_info) == 1) { + switch (depth) { + case 1: + png_set_packswap(png); + pixel_type = GP_PIXEL_G1; + break; + } + } + break; }
if (pixel_type == GP_PIXEL_UNKNOWN) {
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Summary of changes: libs/loaders/GP_PNG.c | 14 +++++++++++++- 1 files changed, 13 insertions(+), 1 deletions(-)
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