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Merge pull request #83536 from wareya/new_cubic

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Optimize cubic hermite algorithm in AudioStreamPlaybackResampled
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Rémi Verschelde 2024-09-08 23:21:02 +02:00
commit 73a0f6e90f
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1 changed files with 5 additions and 5 deletions
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servers/audio/audio_stream.cpp
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@ -173,12 +173,12 @@ int AudioStreamPlaybackResampled::mix(AudioFrame *p_buffer, float p_rate_scale,
}
float mu2 = mu * mu;
AudioFrame a0 = 3 * y1 - 3 * y2 + y3 - y0;
AudioFrame a1 = 2 * y0 - 5 * y1 + 4 * y2 - y3;
AudioFrame a2 = y2 - y0;
AudioFrame a3 = 2 * y1;
float h11 = mu2 * (mu - 1);
float z = mu2 - h11;
float h01 = z - h11;
float h10 = mu - z;
p_buffer[i] = (a0 * mu * mu2 + a1 * mu2 + a2 * mu + a3) / 2;
p_buffer[i] = y1 + (y2 - y1) * h01 + ((y2 - y0) * h10 + (y3 - y1) * h11) * 0.5;
mix_offset += mix_increment;