all working, but needs to optimize vram

2026-09-19 01:05:09 +02:00 · 2026-02-24 21:55:57 +08:00
parent 488c431331
commit aa58d1ed3b
5 changed files with 40 additions and 6 deletions
@@ -389,6 +389,18 @@ std::vector<float> resample_wav(const std::vector<float>& input, uint32_t input_
    return output;
 }

+std::vector<float> mix_planar_stereo_to_mono(const float* audio, int T_audio)
+{
+    std::vector<float> mono(T_audio);
+    const float* left  = audio;
+    const float* right = audio + T_audio;
+    for (int t = 0; t < T_audio; ++t)
+    {
+        mono[t] = 0.5f * (left[t] + right[t]);
+    }
+    return mono;
+}
+
 static uint8_t linear_to_mulaw(int16_t sample)
 {
    const int16_t BIAS = 0x84;        // 132