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mips: Optimization of IIR filter function

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Signed-off-by: Bojan Zivkovic <bojan@mips.com>
Reviewed-by: Nedeljko Babic <Nedeljko.Babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Bojan Zivkovic
2013-03-06 14:55:06 +01:00
committed by Michael Niedermayer
parent 26f3924d78
commit 7d29c6eebc
6 changed files with 243 additions and 2 deletions
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libavcodec/psymodel.c
+7 -2
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@@ -88,6 +88,7 @@ typedef struct FFPsyPreprocessContext{
float stereo_att;
struct FFIIRFilterCoeffs *fcoeffs;
struct FFIIRFilterState **fstate;
struct FFIIRFilterContext fiir;
}FFPsyPreprocessContext;
#define FILT_ORDER 4
@@ -115,6 +116,9 @@ av_cold struct FFPsyPreprocessContext* ff_psy_preprocess_init(AVCodecContext *av
for (i = 0; i < avctx->channels; i++)
ctx->fstate[i] = ff_iir_filter_init_state(FILT_ORDER);
}
ff_iir_filter_init(&ctx->fiir);
return ctx;
}
@@ -122,11 +126,12 @@ void ff_psy_preprocess(struct FFPsyPreprocessContext *ctx, float **audio, int ch
{
int ch;
int frame_size = ctx->avctx->frame_size;
FFIIRFilterContext *iir = &ctx->fiir;
if (ctx->fstate) {
for (ch = 0; ch < channels; ch++)
ff_iir_filter_flt(ctx->fcoeffs, ctx->fstate[ch], frame_size,
&audio[ch][frame_size], 1, &audio[ch][frame_size], 1);
iir->filter_flt(ctx->fcoeffs, ctx->fstate[ch], frame_size,
&audio[ch][frame_size], 1, &audio[ch][frame_size], 1);
}
}