static void encode_clnpass(Jpeg2000T1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno) { int y0, x, y, mask = 1 << (bpno + NMSEDEC_FRACBITS); for (y0 = 0; y0 < height; y0 += 4) for (x = 0; x < width; x++){ if (y0 + 3 < height && !( (t1->flags[y0+1][x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || (t1->flags[y0+2][x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || (t1->flags[y0+3][x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || (t1->flags[y0+4][x+1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)))) { // aggregation mode int rlen; for (rlen = 0; rlen < 4; rlen++) if (t1->data[y0+rlen][x] & mask) break; ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL, rlen != 4); if (rlen == 4) continue; ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen >> 1); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI, rlen & 1); for (y = y0 + rlen; y < y0 + 4; y++){ if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){ int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno); if (y > y0 + rlen) ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0); if (t1->data[y][x] & mask){ // newly significant int xorbit; int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit); *nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit); ff_jpeg2000_set_significance(t1, x, y, t1->flags[y+1][x+1] >> 15); } } t1->flags[y+1][x+1] &= ~JPEG2000_T1_VIS; } } else{ for (y = y0; y < y0 + 4 && y < height; y++){ if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))){ int ctxno = ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1], bandno); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, t1->data[y][x] & mask ? 1:0); if (t1->data[y][x] & mask){ // newly significant int xorbit; int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit); *nmsedec += getnmsedec_sig(t1->data[y][x], bpno + NMSEDEC_FRACBITS); ff_mqc_encode(&t1->mqc, t1->mqc.cx_states + ctxno, (t1->flags[y+1][x+1] >> 15) ^ xorbit); ff_jpeg2000_set_significance(t1, x, y, t1->flags[y+1][x+1] >> 15); } } t1->flags[y+1][x+1] &= ~JPEG2000_T1_VIS; } } } }