int i, j;
header->data_min = DBL_MAX;
- header->data_max = DBL_MIN;
+ header->data_max = -DBL_MAX;
switch (header->bitpix) {
#define CASE_N(a, t, rd) \
case a: \
size = abs(header->bitpix) >> 3;
for (i = 0; i < header->naxis; i++) {
- if (size && header->naxisn[i] > SIZE_MAX / size) {
+ if (size == 0 || header->naxisn[i] > SIZE_MAX / size) {
av_log(avctx, AV_LOG_ERROR, "unsupported size of FITS image");
return AVERROR_INVALIDDATA;
}
uint8_t *dst8;
uint16_t *dst16;
uint64_t t;
- double scale;
FITSHeader header;
FITSContext * fitsctx = avctx->priv_data;
if (ret < 0)
return ret;
- scale = header.data_max - header.data_min;
- if (scale <= 0 || !isfinite(scale)) {
- scale = 1;
- }
- scale = 1/scale;
-
if (header.rgb) {
if (header.bitpix == 8) {
if (header.naxisn[2] == 3) {
CASE_RGB(16, dst16, uint16_t, AV_RB16);
}
} else {
+ double scale = header.data_max - header.data_min;
+
+ if (scale <= 0 || !isfinite(scale)) {
+ scale = 1;
+ }
+ scale = 1/scale;
+
switch (header.bitpix) {
#define CASE_GRAY(cas, dst, type, t, rd) \
case cas: \
for (j = 0; j < avctx->width; j++) { \
t = rd; \
if (!header.blank_found || t != header.blank) { \
- *dst++ = ((t - header.data_min) * ((1 << (sizeof(type) * 8)) - 1)) * scale; \
+ *dst++ = lrint(((t - header.data_min) * ((1 << (sizeof(type) * 8)) - 1)) * scale); \
} else { \
*dst++ = fitsctx->blank_val; \
} \
.version = LIBAVUTIL_VERSION_INT,
};
-AVCodec ff_fits_decoder = {
+const AVCodec ff_fits_decoder = {
.name = "fits",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_FITS,