static int allocate_buffers(ShortenContext *s) { int i, chan, err; for (chan = 0; chan < s->channels; chan++) { if (FFMAX(1, s->nmean) >= UINT_MAX / sizeof(int32_t)) { av_log(s->avctx, AV_LOG_ERROR, "nmean too large\n"); return AVERROR_INVALIDDATA; } if (s->blocksize + s->nwrap >= UINT_MAX / sizeof(int32_t) || s->blocksize + s->nwrap <= (unsigned)s->nwrap) { av_log(s->avctx, AV_LOG_ERROR, "s->blocksize + s->nwrap too large\n"); return AVERROR_INVALIDDATA; } if ((err = av_reallocp_array(&s->offset[chan], sizeof(int32_t), FFMAX(1, s->nmean))) < 0) return err; if ((err = av_reallocp_array(&s->decoded_base[chan], (s->blocksize + s->nwrap), sizeof(s->decoded_base[0][0]))) < 0) return err; for (i = 0; i < s->nwrap; i++) s->decoded_base[chan][i] = 0; s->decoded[chan] = s->decoded_base[chan] + s->nwrap; } if ((err = av_reallocp_array(&s->coeffs, s->nwrap, sizeof(*s->coeffs))) < 0) return err; return 0; }