diff options
Diffstat (limited to 'contrib')
| -rw-r--r-- | contrib/a52dec/imdct.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/contrib/a52dec/imdct.c b/contrib/a52dec/imdct.c index aa1c85464..3b85a2853 100644 --- a/contrib/a52dec/imdct.c +++ b/contrib/a52dec/imdct.c @@ -183,6 +183,7 @@ static void ifft_pass (complex_t * buf, sample_t * weight, int n) complex_t * buf1; complex_t * buf2; complex_t * buf3; + sample_t * wi; double tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8; int i; @@ -194,14 +195,16 @@ static void ifft_pass (complex_t * buf, sample_t * weight, int n) BUTTERFLY_ZERO (buf[-1], buf1[-1], buf2[-1], buf3[-1]); i = n - 1; + wi = weight + n - 2; do { - BUTTERFLY (buf[0], buf1[0], buf2[0], buf3[0], weight[n], weight[2*i]); + BUTTERFLY (buf[0], buf1[0], buf2[0], buf3[0], weight[0], wi[0]); buf++; buf1++; buf2++; buf3++; weight++; + wi--; } while (--i); } @@ -210,7 +213,7 @@ static void ifft16 (complex_t * buf) ifft8 (buf); ifft4 (buf + 8); ifft4 (buf + 12); - ifft_pass (buf, roots16 - 4, 4); + ifft_pass (buf, roots16, 4); } static void ifft32 (complex_t * buf) @@ -218,7 +221,7 @@ static void ifft32 (complex_t * buf) ifft16 (buf); ifft8 (buf + 16); ifft8 (buf + 24); - ifft_pass (buf, roots32 - 8, 8); + ifft_pass (buf, roots32, 8); } static void ifft64_c (complex_t * buf) @@ -226,7 +229,7 @@ static void ifft64_c (complex_t * buf) ifft32 (buf); ifft16 (buf + 32); ifft16 (buf + 48); - ifft_pass (buf, roots64 - 16, 16); + ifft_pass (buf, roots64, 16); } static void ifft128_c (complex_t * buf) @@ -234,11 +237,11 @@ static void ifft128_c (complex_t * buf) ifft32 (buf); ifft16 (buf + 32); ifft16 (buf + 48); - ifft_pass (buf, roots64 - 16, 16); + ifft_pass (buf, roots64, 16); ifft32 (buf + 64); ifft32 (buf + 96); - ifft_pass (buf, roots128 - 32, 32); + ifft_pass (buf, roots128, 32); } void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias) |