static int decode_residuals(FLACContext *s, int32_t *decoded, int pred_order) { int i, tmp, partition, method_type, rice_order; int rice_bits, rice_esc; int samples; method_type = get_bits(&s->gb, 2); if (method_type > 1) { av_log(s->avctx, AV_LOG_ERROR, "illegal residual coding method %d\n", method_type); return AVERROR_INVALIDDATA; } rice_order = get_bits(&s->gb, 4); samples= s->blocksize >> rice_order; if (samples << rice_order != s->blocksize) { av_log(s->avctx, AV_LOG_ERROR, "invalid rice order: %i blocksize %i\n", rice_order, s->blocksize); return AVERROR_INVALIDDATA; } if (pred_order > samples) { av_log(s->avctx, AV_LOG_ERROR, "invalid predictor order: %i > %i\n", pred_order, samples); return AVERROR_INVALIDDATA; } rice_bits = 4 + method_type; rice_esc = (1 << rice_bits) - 1; decoded += pred_order; i= pred_order; for (partition = 0; partition < (1 << rice_order); partition++) { tmp = get_bits(&s->gb, rice_bits); if (tmp == rice_esc) { tmp = get_bits(&s->gb, 5); for (; i < samples; i++) *decoded++ = get_sbits_long(&s->gb, tmp); } else { for (; i < samples; i++) { *decoded++ = get_sr_golomb_flac(&s->gb, tmp, INT_MAX, 0); } } i= 0; } return 0; }