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-rw-r--r--src/bin/jp2/convert.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/bin/jp2/convert.c b/src/bin/jp2/convert.c
index 4273141f..e6346ea9 100644
--- a/src/bin/jp2/convert.c
+++ b/src/bin/jp2/convert.c
@@ -108,15 +108,15 @@ static void scale_component_up(opj_image_comp_t* component, OPJ_UINT32 precision
len = (OPJ_SIZE_T)component->w * (OPJ_SIZE_T)component->h;
if (component->sgnd) {
- OPJ_INT64 newMax = (1U << (precision - 1));
- OPJ_INT64 oldMax = (1U << (component->prec - 1));
+ OPJ_INT64 newMax = (OPJ_INT64)(1U << (precision - 1));
+ OPJ_INT64 oldMax = (OPJ_INT64)(1U << (component->prec - 1));
OPJ_INT32* l_data = component->data;
for (i = 0; i < len; ++i) {
l_data[i] = (OPJ_INT32)(((OPJ_INT64)l_data[i] * newMax) / oldMax);
}
} else {
- OPJ_UINT64 newMax = (1U << precision) - 1U;
- OPJ_UINT64 oldMax = (1U << component->prec) - 1U;
+ OPJ_UINT64 newMax = (OPJ_UINT64)((1U << precision) - 1U);
+ OPJ_UINT64 oldMax = (OPJ_UINT64)((1U << component->prec) - 1U);
OPJ_UINT32* l_data = (OPJ_UINT32*)component->data;
for (i = 0; i < len; ++i) {
l_data[i] = (OPJ_UINT32)(((OPJ_UINT64)l_data[i] * newMax) / oldMax);