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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2011-01-21 00:12:03 +0000 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2011-01-21 19:59:08 +0000 |
| commit | 77a78e9bdcc589efac41da4f92a489f4523667c0 (patch) | |
| tree | 90c798d89322e0799f72faacff3eb8cda0a5f3c6 /libavcodec/x86/lpc_mmx.c | |
| parent | 56f8952b252f85281317ecd3e0b04c4cae93fd72 (diff) | |
| download | ffmpeg-77a78e9bdcc589efac41da4f92a489f4523667c0.tar.gz | |
Separate window function from autocorrelation.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Diffstat (limited to 'libavcodec/x86/lpc_mmx.c')
| -rw-r--r-- | libavcodec/x86/lpc_mmx.c | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/libavcodec/x86/lpc_mmx.c b/libavcodec/x86/lpc_mmx.c index 19aad9860f..3a0a1f0f6f 100644 --- a/libavcodec/x86/lpc_mmx.c +++ b/libavcodec/x86/lpc_mmx.c @@ -69,21 +69,13 @@ static void apply_welch_window_sse2(const int32_t *data, int len, double *w_data #undef WELCH } -static void lpc_compute_autocorr_sse2(const int32_t *data, int len, int lag, +static void lpc_compute_autocorr_sse2(const double *data, int len, int lag, double *autoc) { - double tmp[len + lag + 2]; - double *data1 = tmp + lag; int j; - if((x86_reg)data1 & 15) - data1++; - - apply_welch_window_sse2(data, len, data1); - - for(j=0; j<lag; j++) - data1[j-lag]= 0.0; - data1[len] = 0.0; + if((x86_reg)data & 15) + data++; for(j=0; j<lag; j+=2){ x86_reg i = -len*sizeof(double); @@ -114,7 +106,7 @@ static void lpc_compute_autocorr_sse2(const int32_t *data, int len, int lag, "movsd %%xmm1, 8(%1) \n\t" "movsd %%xmm2, 16(%1) \n\t" :"+&r"(i) - :"r"(autoc+j), "r"(data1+len), "r"(data1+len-j) + :"r"(autoc+j), "r"(data+len), "r"(data+len-j) :"memory" ); } else { @@ -137,7 +129,7 @@ static void lpc_compute_autocorr_sse2(const int32_t *data, int len, int lag, "movsd %%xmm0, %1 \n\t" "movsd %%xmm1, %2 \n\t" :"+&r"(i), "=m"(autoc[j]), "=m"(autoc[j+1]) - :"r"(data1+len), "r"(data1+len-j) + :"r"(data+len), "r"(data+len-j) ); } } @@ -148,6 +140,7 @@ av_cold void ff_lpc_init_x86(LPCContext *c) int mm_flags = av_get_cpu_flags(); if (mm_flags & (AV_CPU_FLAG_SSE2|AV_CPU_FLAG_SSE2SLOW)) { + c->lpc_apply_welch_window = apply_welch_window_sse2; c->lpc_compute_autocorr = lpc_compute_autocorr_sse2; } } |