static int read_decoding_params(MLPDecodeContext *m, GetBitContext *gbp, unsigned int substr) { SubStream *s = &m->substream[substr]; unsigned int ch; if (s->param_presence_flags & PARAM_PRESENCE) if (get_bits1(gbp)) s->param_presence_flags = get_bits(gbp, 8); if (s->param_presence_flags & PARAM_BLOCKSIZE) if (get_bits1(gbp)) { s->blocksize = get_bits(gbp, 9); if (s->blocksize > MAX_BLOCKSIZE) { av_log(m->avctx, AV_LOG_ERROR, "block size too large\n"); s->blocksize = 0; return -1; } } if (s->param_presence_flags & PARAM_MATRIX) if (get_bits1(gbp)) { if (read_matrix_params(m, s, gbp) < 0) return -1; } if (s->param_presence_flags & PARAM_OUTSHIFT) if (get_bits1(gbp)) for (ch = 0; ch <= s->max_matrix_channel; ch++) { s->output_shift[ch] = get_sbits(gbp, 4); dprintf(m->avctx, "output shift[%d] = %d\n", ch, s->output_shift[ch]); } if (s->param_presence_flags & PARAM_QUANTSTEP) if (get_bits1(gbp)) for (ch = 0; ch <= s->max_channel; ch++) { ChannelParams *cp = &m->channel_params[ch]; s->quant_step_size[ch] = get_bits(gbp, 4); cp->sign_huff_offset = calculate_sign_huff(m, substr, ch); } for (ch = s->min_channel; ch <= s->max_channel; ch++) if (get_bits1(gbp)) { if (read_channel_params(m, substr, gbp, ch) < 0) return -1; } return 0; }