JPEG2000_EOC = 0xffd9, // end of codestream
};
+#define JPEG2000_SOP_FIXED_BYTES 0xFF910004
+#define JPEG2000_SOP_BYTE_LENGTH 6
+
enum Jpeg2000Quantsty { // quantization style
JPEG2000_QSTY_NONE, // no quantization
JPEG2000_QSTY_SI, // scalar derived
JPEG2000_QSTY_SE // scalar expounded
};
-#define JPEG2000_MAX_CBLKW 64
-#define JPEG2000_MAX_CBLKH 64
-
-
#define JPEG2000_MAX_DECLEVELS 32
#define JPEG2000_MAX_RESLEVELS (JPEG2000_MAX_DECLEVELS + 1)
+#define JPEG2000_MAX_PASSES 100
+
// T1 flags
// flags determining significance of neighbor coefficients
#define JPEG2000_T1_SIG_N 0x0001
#define JPEG2000_PGOD_CPRL 0x04 // Component-position-resolution level-layer progression
typedef struct Jpeg2000T1Context {
- int data[JPEG2000_MAX_CBLKW][JPEG2000_MAX_CBLKH];
- int flags[JPEG2000_MAX_CBLKW + 2][JPEG2000_MAX_CBLKH + 2];
+ int data[6144];
+ uint16_t flags[6156];
MqcState mqc;
+ int stride;
} Jpeg2000T1Context;
typedef struct Jpeg2000TgtNode {
typedef struct Jpeg2000Pass {
uint16_t rate;
int64_t disto;
+ uint8_t flushed[4];
+ int flushed_len;
} Jpeg2000Pass;
typedef struct Jpeg2000Cblk {
uint8_t ninclpasses; // number coding of passes included in codestream
uint8_t nonzerobits;
uint16_t length;
- uint16_t lengthinc;
+ uint16_t lengthinc[JPEG2000_MAX_PASSES];
+ uint8_t nb_lengthinc;
uint8_t lblock;
uint8_t zero;
uint8_t data[8192];
- Jpeg2000Pass passes[100];
+ int nb_terminations;
+ int nb_terminationsinc;
+ int data_start[JPEG2000_MAX_PASSES];
+ Jpeg2000Pass passes[JPEG2000_MAX_PASSES];
uint16_t coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
} Jpeg2000Cblk; // code block
void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty);
+static inline int needs_termination(int style, int passno) {
+ if (style & JPEG2000_CBLK_BYPASS) {
+ int type = passno % 3;
+ passno /= 3;
+ if (type == 0 && passno > 2)
+ return 2;
+ if (type == 2 && passno > 2)
+ return 1;
+ if (style & JPEG2000_CBLK_TERMALL) {
+ return passno > 2 ? 2 : 1;
+ }
+ }
+ if (style & JPEG2000_CBLK_TERMALL)
+ return 1;
+ return 0;
+}
+
#endif /* AVCODEC_JPEG2000_H */