From: Pascal <redacted>
Date: Thu, 7 May 2026 12:01:01 +0000 (+0200)
Subject: mtmd: fix whisper audio tail truncation by exposing padded buffer to FFT (#22770)
X-Git-Tag: upstream/0.0.10438~1382
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=cc97e45a1418fa9f63a34ceafcf4aa4c01fbdd0d;p=pkg%2Fggml%2Fsources%2Fllama.cpp

mtmd: fix whisper audio tail truncation by exposing padded buffer to FFT (#22770)
---

diff --git a/tools/mtmd/mtmd-audio.cpp b/tools/mtmd/mtmd-audio.cpp
index 6bab1b6be..8f0a9875b 100644
--- a/tools/mtmd/mtmd-audio.cpp
+++ b/tools/mtmd/mtmd-audio.cpp
@@ -403,6 +403,11 @@ static bool log_mel_spectrogram(
             return false;
         }
         std::reverse_copy(samples + 1, samples + 1 + stage_2_pad, samples_padded.begin());
+
+        // expose the padded buffer to downstream FFT and to out.n_len computation
+        // mirrors the no_padding and center_padding branches above
+        samples   = samples_padded.data();
+        n_samples = samples_padded.size();
     }
 
     // preemphasis