diff --git a/libavcodec/flacdec.c b/libavcodec/flacdec.c index 581c73efc8..567f6f88a7 100644 --- a/libavcodec/flacdec.c +++ b/libavcodec/flacdec.c @@ -225,15 +225,21 @@ static int decode_residuals(FLACContext *s, int32_t *decoded, int pred_order) int samples; method_type = get_bits(&s->gb, 2); + rice_order = get_bits(&s->gb, 4); + + samples = s->blocksize >> rice_order; + rice_bits = 4 + method_type; + rice_esc = (1 << rice_bits) - 1; + + decoded += pred_order; + i = pred_order; + 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); @@ -246,11 +252,6 @@ static int decode_residuals(FLACContext *s, int32_t *decoded, int pred_order) 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) {