static int encode_tile(Jpeg2000EncoderContext *s, Jpeg2000Tile *tile, int tileno) { int compno, reslevelno, bandno, ret; Jpeg2000T1Context t1; Jpeg2000CodingStyle *codsty = &s->codsty; for (compno = 0; compno < s->ncomponents; compno++){ Jpeg2000Component *comp = s->tile[tileno].comp + compno; av_log(s->avctx, AV_LOG_DEBUG,"dwt\n"); if (ret = ff_dwt_encode(&comp->dwt, comp->i_data)) return ret; av_log(s->avctx, AV_LOG_DEBUG,"after dwt -> tier1\n"); for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++){ Jpeg2000ResLevel *reslevel = comp->reslevel + reslevelno; for (bandno = 0; bandno < reslevel->nbands ; bandno++){ Jpeg2000Band *band = reslevel->band + bandno; Jpeg2000Prec *prec = band->prec; // we support only 1 precinct per band ATM in the encoder int cblkx, cblky, cblkno=0, xx0, x0, xx1, y0, yy0, yy1, bandpos; yy0 = bandno == 0 ? 0 : comp->reslevel[reslevelno-1].coord[1][1] - comp->reslevel[reslevelno-1].coord[1][0]; y0 = yy0; yy1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[1][0] + 1, band->log2_cblk_height) << band->log2_cblk_height, band->coord[1][1]) - band->coord[1][0] + yy0; if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1]) continue; bandpos = bandno + (reslevelno > 0); for (cblky = 0; cblky < prec->nb_codeblocks_height; cblky++){ if (reslevelno == 0 || bandno == 1) xx0 = 0; else xx0 = comp->reslevel[reslevelno-1].coord[0][1] - comp->reslevel[reslevelno-1].coord[0][0]; x0 = xx0; xx1 = FFMIN(ff_jpeg2000_ceildivpow2(band->coord[0][0] + 1, band->log2_cblk_width) << band->log2_cblk_width, band->coord[0][1]) - band->coord[0][0] + xx0; for (cblkx = 0; cblkx < prec->nb_codeblocks_width; cblkx++, cblkno++){ int y, x; if (codsty->transform == FF_DWT53){ for (y = yy0; y < yy1; y++){ int *ptr = t1.data[y-yy0]; for (x = xx0; x < xx1; x++){ *ptr++ = comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x] << NMSEDEC_FRACBITS; } } } else{ for (y = yy0; y < yy1; y++){ int *ptr = t1.data[y-yy0]; for (x = xx0; x < xx1; x++){ *ptr = (comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * y + x]); *ptr = (int64_t)*ptr * (int64_t)(16384 * 65536 / band->i_stepsize) >> 14 - NMSEDEC_FRACBITS; ptr++; } } } encode_cblk(s, &t1, prec->cblk + cblkno, tile, xx1 - xx0, yy1 - yy0, bandpos, codsty->nreslevels - reslevelno - 1); xx0 = xx1; xx1 = FFMIN(xx1 + (1 << band->log2_cblk_width), band->coord[0][1] - band->coord[0][0] + x0); } yy0 = yy1; yy1 = FFMIN(yy1 + (1 << band->log2_cblk_height), band->coord[1][1] - band->coord[1][0] + y0); } } } av_log(s->avctx, AV_LOG_DEBUG, "after tier1\n"); } av_log(s->avctx, AV_LOG_DEBUG, "rate control\n"); truncpasses(s, tile); if (ret = encode_packets(s, tile, tileno)) return ret; av_log(s->avctx, AV_LOG_DEBUG, "after rate control\n"); return 0; }