And define the resolution levels according.
---
libavcodec/jpeg2000.h | 8 +++++---
libavcodec/jpeg2000dec.c | 2 +-
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/libavcodec/jpeg2000.h b/libavcodec/jpeg2000.h
index 1e46f07..66651bc 100644
--- a/libavcodec/jpeg2000.h
+++ b/libavcodec/jpeg2000.h
@@ -67,7 +67,9 @@ enum Jpeg2000Quantsty { // quantization style
#define JPEG2000_MAX_CBLKW 64
#define JPEG2000_MAX_CBLKH 64
-#define JPEG2000_MAX_RESLEVELS 33
+
+#define JPEG2000_MAX_DECLEVELS 32
+#define JPEG2000_MAX_RESLEVELS JPEG2000_MAX_DECLEVELS + 1
// T1 flags
// flags determining significance of neighbor coefficients
@@ -145,8 +147,8 @@ typedef struct Jpeg2000CodingStyle {
} Jpeg2000CodingStyle;
typedef struct Jpeg2000QuantStyle {
- uint8_t expn[32 * 3]; // quantization exponent
- uint32_t mant[32 * 3]; // quantization mantissa
+ uint8_t expn[JPEG2000_MAX_DECLEVELS * 3]; // quantization exponent
+ uint32_t mant[JPEG2000_MAX_DECLEVELS * 3]; // quantization mantissa
uint8_t quantsty; // quantization style
uint8_t nguardbits; // number of guard bits
} Jpeg2000QuantStyle;
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c
index 26c2cfc..363757c 100644
--- a/libavcodec/jpeg2000dec.c
+++ b/libavcodec/jpeg2000dec.c
@@ -360,7 +360,7 @@ static int get_qcx(Jpeg2000DecoderContext *s, int n,
Jpeg2000QuantStyle *q)
x = bytestream_get_be16(&s->buf);
q->expn[0] = x >> 11;
q->mant[0] = x & 0x7ff;
- for (i = 1; i < 32 * 3; i++) {
+ for (i = 1; i < JPEG2000_MAX_DECLEVELS * 3; i++) {
int curexpn = FFMAX(0, q->expn[0] - (i - 1) / 3);
q->expn[i] = curexpn;
q->mant[i] = q->mant[0];
--
1.8.2.1
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