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avcodec/dca_core: Only call emms_c() if needed
It is not needed on x64, because the AV_COPY* and AV_ZERO* macros never use MMX on x64. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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@ -767,7 +767,9 @@ static void erase_adpcm_history(DCACoreDecoder *s)
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for (band = 0; band < DCA_SUBBANDS; band++)
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AV_ZERO128(s->subband_samples[ch][band] - DCA_ADPCM_COEFFS);
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#ifdef FF_COPY_SWAP_ZERO_USES_MMX
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emms_c();
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#endif
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}
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static int alloc_sample_buffer(DCACoreDecoder *s)
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@ -831,7 +833,9 @@ static int parse_frame_data(DCACoreDecoder *s, enum HeaderType header, int xch_b
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}
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}
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#ifdef FF_COPY_SWAP_ZERO_USES_MMX
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emms_c();
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#endif
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return 0;
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}
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@ -1276,7 +1280,9 @@ static void erase_x96_adpcm_history(DCACoreDecoder *s)
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for (band = 0; band < DCA_SUBBANDS_X96; band++)
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AV_ZERO128(s->x96_subband_samples[ch][band] - DCA_ADPCM_COEFFS);
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#ifdef FF_COPY_SWAP_ZERO_USES_MMX
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emms_c();
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#endif
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}
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static int alloc_x96_sample_buffer(DCACoreDecoder *s)
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@ -1506,7 +1512,9 @@ static int parse_x96_frame_data(DCACoreDecoder *s, int exss, int xch_base)
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}
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}
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#ifdef FF_COPY_SWAP_ZERO_USES_MMX
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emms_c();
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#endif
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return 0;
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}
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