jpeginfo: parse TIFF UNDEFINED values
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4cbf9239ee
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4d9236336c
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@ -601,6 +601,20 @@ parse_exif_ascii(struct tiffer_entry *entry)
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return a;
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}
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static jv
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parse_exif_undefined(struct tiffer_entry *entry)
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{
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const char *alphabet = "0123456789abcdef";
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char *buf = calloc(1, 2 * entry->remaining_count + 1);
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for (uint32_t i = 0; i < entry->remaining_count; i++) {
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buf[2 * i + 0] = alphabet[entry->p[i] >> 4];
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buf[2 * i + 1] = alphabet[entry->p[i] & 0xF];
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}
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jv s = jv_string(buf);
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free(buf);
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return s;
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}
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static jv
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parse_exif_entry(jv o, struct tiffer *T, struct tiffer_entry *entry)
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{
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@ -613,11 +627,13 @@ parse_exif_entry(jv o, struct tiffer *T, struct tiffer_entry *entry)
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value = parse_exif_subifds(T, entry);
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} else if (entry->type == ASCII) {
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value = parse_exif_ascii(entry);
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} else if (entry->type == UNDEFINED) {
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value = parse_exif_undefined(entry);
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} else if ((numeric = tiffer_real(T, entry, &real))) {
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value = jv_number(real);
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}
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// TODO(p): Decode UNDEFINED as a hex dump, and iterate over all values.
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// TODO(p): Iterate over all numeric values.
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for (const struct tiff_entry *p = tiff_entries; p->name; p++) {
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if (p->tag != entry->tag)
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continue;
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