log2_cblk_height; // exponent of codeblock size
uint8_t transform; // DWT type
uint8_t csty; // coding style
- uint8_t log2_prec_width,
- log2_prec_height; // precinct size
uint8_t nlayers; // number of layers
uint8_t mct; // multiple component transformation
uint8_t cblk_style; // codeblock coding style
} Jpeg2000Cblk; // code block
typedef struct Jpeg2000Prec {
- uint16_t xi0, yi0; // codeblock indexes ([xi0, xi1))
uint16_t nb_codeblocks_width;
uint16_t nb_codeblocks_height;
Jpeg2000TgtNode *zerobits;
typedef struct Jpeg2000Band {
uint16_t coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
uint16_t log2_cblk_width, log2_cblk_height;
- uint16_t cblknx, cblkny;
float stepsize; // quantization stepsize
Jpeg2000Prec *prec;
} Jpeg2000Band; // subband
c->log2_prec_widths[i] = byte & 0x0F; // precinct PPx
c->log2_prec_heights[i] = (byte >> 4) & 0x0F; // precinct PPy
}
+ } else {
+ memset(c->log2_prec_widths , 15, sizeof(c->log2_prec_widths ));
+ memset(c->log2_prec_heights, 15, sizeof(c->log2_prec_heights));
}
return 0;
}
if (bytestream2_get_bytes_left(&s->g) < 5)
return AVERROR_INVALIDDATA;
- tmp.log2_prec_width =
- tmp.log2_prec_height = 15;
-
tmp.csty = bytestream2_get_byteu(&s->g);
// get progression order
if (band->coord[0][0] == band->coord[0][1] ||
band->coord[1][0] == band->coord[1][1])
continue;
- prec->yi0 = 0;
- prec->xi0 = 0;
nb_code_blocks = prec->nb_codeblocks_height *
prec->nb_codeblocks_width;
for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) {