hwcontext_vulkan: dlopen libvulkan

[ffmpeg] / libavcodec / fitsdec.c

diff --git a/libavcodec/fitsdec.c b/libavcodec/fitsdec.c
index a20b8faf9e9c574ba0d1a10aa8ca1f9051b27d03..af60217a8a04c25e53c9f7192d282e2a6e26e5b1 100644 (file)
--- a/libavcodec/fitsdec.c
+++ b/libavcodec/fitsdec.c
@@ -63,7 +63,7 @@ static int fill_data_min_max(const uint8_t *ptr8, FITSHeader *header, const uint
     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: \
@@ -143,7 +143,7 @@ static int fits_read_header(AVCodecContext *avctx, const uint8_t **ptr, FITSHead
 
     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;
         }
@@ -279,7 +279,7 @@ static int fits_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
             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; \
                 } \
@@ -320,7 +320,7 @@ static const AVClass fits_decoder_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-AVCodec ff_fits_decoder = {
+const AVCodec ff_fits_decoder = {
     .name           = "fits",
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_FITS,