From 12030358ee852efd4ff155b0aaf0e5097cf8557c Mon Sep 17 00:00:00 2001
From: Georgi Gerganov <ggerganov@gmail.com>
Date: Fri, 10 Nov 2023 12:45:26 +0200
Subject: [PATCH] whisper : free backends + fix compile warning

---
 examples/common.h | 2 +-
 whisper.cpp       | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/examples/common.h b/examples/common.h
index 9a94bab7..54f0b00d 100644
--- a/examples/common.h
+++ b/examples/common.h
@@ -181,7 +181,7 @@ private:
     // It is assumed that PCM data is normalized to a range from -1 to 1
     bool write_audio(const float * data, size_t length) {
         for (size_t i = 0; i < length; ++i) {
-            const auto intSample = static_cast<const int16_t>(data[i] * 32767);
+            const int16_t intSample = data[i] * 32767;
             file.write(reinterpret_cast<const char *>(&intSample), sizeof(int16_t));
             dataSize += sizeof(int16_t);
         }
diff --git a/whisper.cpp b/whisper.cpp
index d999e548..62d9af25 100644
--- a/whisper.cpp
+++ b/whisper.cpp
@@ -3276,6 +3276,12 @@ void whisper_free(struct whisper_context * ctx) {
 
         whisper_free_state(ctx->state);
 
+        ggml_backend_free(ctx->backend_cpu);
+
+        if (ctx->backend_gpu) {
+            ggml_backend_free(ctx->backend_gpu);
+        }
+
         delete ctx;
     }
 }