diff options
Diffstat (limited to 'source/blender/imbuf/intern/jp2.c')
-rw-r--r-- | source/blender/imbuf/intern/jp2.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/source/blender/imbuf/intern/jp2.c b/source/blender/imbuf/intern/jp2.c index 8be7a9ea28b..1fe9a5ab522 100644 --- a/source/blender/imbuf/intern/jp2.c +++ b/source/blender/imbuf/intern/jp2.c @@ -41,6 +41,7 @@ #define JP2_FILEHEADER_SIZE 14 static char JP2_HEAD[] = {0x0, 0x0, 0x0, 0x0C, 0x6A, 0x50, 0x20, 0x20, 0x0D, 0x0A, 0x87, 0x0A}; +static char J2K_HEAD[] = {0xFF, 0x4F, 0xFF, 0x51, 0x00}; /* We only need this because of how the presets are set */ /* this typedef is copied from 'openjpeg-1.5.0/applications/codec/image_to_j2k.c' */ @@ -59,15 +60,19 @@ typedef struct img_folder { static int check_jp2(unsigned char *mem) /* J2K_CFMT */ { - return memcmp(JP2_HEAD, mem, 12) ? 0 : 1; + return memcmp(JP2_HEAD, mem, sizeof(JP2_HEAD)) ? 0 : 1; +} + +static int check_j2k(unsigned char *mem) /* J2K_CFMT */ +{ + return memcmp(J2K_HEAD, mem, sizeof(J2K_HEAD)) ? 0 : 1; } int imb_is_a_jp2(unsigned char *buf) -{ +{ return check_jp2(buf); } - /** * sample error callback expecting a FILE* client object */ @@ -116,6 +121,7 @@ struct ImBuf *imb_jp2_decode(unsigned char *mem, size_t size, int flags) unsigned int i, i_next, w, h, planes; unsigned int y; int *r, *g, *b, *a; /* matching 'opj_image_comp.data' type */ + int is_jp2, is_j2k; opj_dparameters_t parameters; /* decompression parameters */ @@ -125,7 +131,11 @@ struct ImBuf *imb_jp2_decode(unsigned char *mem, size_t size, int flags) opj_dinfo_t *dinfo = NULL; /* handle to a decompressor */ opj_cio_t *cio = NULL; - if (check_jp2(mem) == 0) return(NULL); + is_jp2 = check_jp2(mem); + is_j2k = check_j2k(mem); + + if (!is_jp2 && !is_j2k) + return(NULL); /* configure the event callbacks (not required) */ memset(&event_mgr, 0, sizeof(opj_event_mgr_t)); @@ -141,7 +151,7 @@ struct ImBuf *imb_jp2_decode(unsigned char *mem, size_t size, int flags) /* JPEG 2000 compressed image data */ /* get a decoder handle */ - dinfo = opj_create_decompress(CODEC_JP2); + dinfo = opj_create_decompress(is_jp2 ? CODEC_JP2 : CODEC_J2K); /* catch events using our callbacks and give a local context */ opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr); |