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Support zlib compressed AJP mask

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Nunuhara Cabbage
2020-05-18 19:37:00 -07:00
parent 05d998886f
commit 940fcb6931
1 changed files with 13 additions and 1 deletions
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src/ajp.c
+13 -1
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@@ -18,6 +18,7 @@
#include <stdlib.h>
#include <string.h>
#include <turbojpeg.h>
#include <zlib.h>
#include "little_endian.h"
#include "system4.h"
#include "system4/cg.h"
@@ -116,9 +117,20 @@ void ajp_extract(uint8_t *data, size_t size, struct cg *cg)
uint8_t *mask;
if (ajp.mask_size && pms8_checkfmt(mask_data)) {
mask = pms_extract_mask(mask_data, ajp.mask_size);
} else if (mask_data[0] == 0x78) {
// compressed
unsigned long uncompressed_size = width*height;
mask = xmalloc(uncompressed_size);
if (uncompress(mask, &uncompressed_size, mask_data, ajp.mask_size) != Z_OK) {
WARNING("uncompress failed");
memset(mask, 0xFF, width * height);
} else if (uncompressed_size != (unsigned)width * (unsigned)height) {
WARNING("Unexpected AJP mask size");
}
} else {
if (ajp.mask_size)
WARNING("Unsupported AJP mask format");
WARNING("Unsupported AJP mask format: %02x %02x %02x %02x",
mask_data[0], mask_data[1], mask_data[2], mask_data[3]);
mask = xmalloc(width * height);
memset(mask, 0xFF, width * height);
}