From: Georgi Gerganov <redacted>
Date: Sun, 22 Jan 2023 08:47:01 +0000 (+0200)
Subject: whisper : fix condition for providing past prompt (critical)
X-Git-Tag: upstream/1.7.4~1601
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=78f166174f126345ed87cc8f6941af1905c4a0f2;p=pkg%2Fggml%2Fsources%2Fwhisper.cpp

whisper : fix condition for providing past prompt (critical)

This bug has been present since v1.1.0.

Effectively, the past transcribed text wasn't being used for following
transcriptions, which likely significantly reduces the transcription
quality.

Likely related to #419
---

diff --git a/whisper.cpp b/whisper.cpp
index 6014cb18..81458a59 100644
--- a/whisper.cpp
+++ b/whisper.cpp
@@ -3449,7 +3449,7 @@ int whisper_full(
                 prompt.clear();
 
                 // if we have already generated some text, use it as a prompt to condition the next generation
-                if (!prompt_past.empty() && t_cur > 0.5f) {
+                if (!prompt_past.empty() && t_cur < 0.5f) {
                     int n_take = std::min(std::min(params.n_max_text_ctx, whisper_n_text_ctx(ctx)/2), int(prompt_past.size()));
 
                     prompt = { whisper_token_prev(ctx) };