diff options
| -rw-r--r-- | exif.c | 21 |
1 files changed, 16 insertions, 5 deletions
@@ -1168,12 +1168,8 @@ char* formatStr(int format) { // Create minimal exif header - just date and thumbnail pointers, // so that date and thumbnail may be filled later. //-------------------------------------------------------------------------- -void create_EXIF(ExifElement_t* elements, int exifTagCount, int gpsTagCount) +static void create_EXIF_internal(ExifElement_t* elements, int exifTagCount, int gpsTagCount, char* Buffer) { - // TODO: We need to dynamically allocate this buffer and resize it when - // necessary while writing so we don't do a buffer overflow. - char Buffer[1024]; - unsigned short NumEntries; int DataWriteIndex; int DirIndex; @@ -1384,6 +1380,21 @@ void create_EXIF(ExifElement_t* elements, int exifTagCount, int gpsTagCount) } } +void create_EXIF(ExifElement_t* elements, int exifTagCount, int gpsTagCount) +{ + // It is hard to calculate exact necessary size for editing the exif + // header dynamically, so we are using the maximum size of EXIF, 64K + const int EXIF_MAX_SIZE = 1024*64; + char* Buffer = malloc(EXIF_MAX_SIZE); + + if (Buffer != NULL) { + create_EXIF_internal(elements, exifTagCount, gpsTagCount, Buffer); + free(Buffer); + } else { + ErrFatal("Could not allocate memory"); + } +} + //-------------------------------------------------------------------------- // Cler the rotation tag in the exif header to 1. //-------------------------------------------------------------------------- |