From cac651c83417dde3b64a6620cac32f078c9c399f Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Mon, 29 Aug 2011 07:11:57 +0200
Subject: cmdutils: move grow_array() from avconv to cmdutils.

---
 cmdutils.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'cmdutils.c')

diff --git a/cmdutils.c b/cmdutils.c
index a86c55bc6d..9e34e43128 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -931,4 +931,23 @@ int get_filtered_video_frame(AVFilterContext *ctx, AVFrame *frame,
     return 1;
 }
 
+void *grow_array(void *array, int elem_size, int *size, int new_size)
+{
+    if (new_size >= INT_MAX / elem_size) {
+        av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
+        exit_program(1);
+    }
+    if (*size < new_size) {
+        uint8_t *tmp = av_realloc(array, new_size*elem_size);
+        if (!tmp) {
+            av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
+            exit_program(1);
+        }
+        memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
+        *size = new_size;
+        return tmp;
+    }
+    return array;
+}
+
 #endif /* CONFIG_AVFILTER */
-- 
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