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ac3enc: add some assertions

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(cherry picked from commit 2d9a101a1f)
This commit is contained in:
Justin Ruggles 2011-03-04 12:12:01 -05:00 committed by Michael Niedermayer
parent e8a0c465bc
commit e95f3363d8
1 changed files with 6 additions and 0 deletions
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6
libavcodec/ac3enc.c
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@ -428,6 +428,7 @@ static void extract_exponents(AC3EncodeContext *s)
e = 24;
coef[i] = 0;
}
av_assert2(e >= 0);
}
exp[i] = e;
}
@ -650,16 +651,19 @@ static void group_exponents(AC3EncodeContext *s)
exp1 = p[0];
p += group_size;
delta0 = exp1 - exp0 + 2;
av_assert2(delta0 >= 0 && delta0 <= 4);
exp0 = exp1;
exp1 = p[0];
p += group_size;
delta1 = exp1 - exp0 + 2;
av_assert2(delta1 >= 0 && delta1 <= 4);
exp0 = exp1;
exp1 = p[0];
p += group_size;
delta2 = exp1 - exp0 + 2;
av_assert2(delta2 >= 0 && delta2 <= 4);
block->grouped_exp[ch][i] = ((delta0 * 5 + delta1) * 5) + delta2;
}
@ -947,6 +951,7 @@ static int cbr_bit_allocation(AC3EncodeContext *s)
int snr_offset, snr_incr;
bits_left = 8 * s->frame_size - (s->frame_bits + s->exponent_bits);
av_assert2(bits_left >= 0);
snr_offset = s->coarse_snr_offset << 4;
@ -1438,6 +1443,7 @@ static void output_frame_end(AC3EncodeContext *s)
frame_size_58 = ((s->frame_size >> 2) + (s->frame_size >> 4)) << 1;
/* pad the remainder of the frame with zeros */
av_assert2(s->frame_size * 8 - put_bits_count(&s->pb) >= 18);
flush_put_bits(&s->pb);
frame = s->pb.buf;
pad_bytes = s->frame_size - (put_bits_ptr(&s->pb) - frame) - 2;