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aacsbr: prevent multiple ff_aac_sbr_ctx_init()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -131,6 +131,8 @@ av_cold void ff_aac_sbr_init(void)
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av_cold void ff_aac_sbr_ctx_init(AACContext *ac, SpectralBandReplication *sbr)
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av_cold void ff_aac_sbr_ctx_init(AACContext *ac, SpectralBandReplication *sbr)
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{
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{
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float mdct_scale;
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float mdct_scale;
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if(sbr->mdct.mdct_bits)
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return;
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sbr->kx[0] = sbr->kx[1] = 32; //Typo in spec, kx' inits to 32
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sbr->kx[0] = sbr->kx[1] = 32; //Typo in spec, kx' inits to 32
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sbr->data[0].e_a[1] = sbr->data[1].e_a[1] = -1;
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sbr->data[0].e_a[1] = sbr->data[1].e_a[1] = -1;
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sbr->data[0].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
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sbr->data[0].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
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