avutil/samplefmt: don't add offsets to NULL pointers

Signed-off-by: James Almer <jamrial@gmail.com>
4 years ago · 8a6103326e
parent 7916c14713
commit 8a6103326e
1 changed files with 10 additions and 3 deletions
--- a/libavutil/samplefmt.c
+++ b/libavutil/samplefmt.c
@ -160,13 +160,20 @@ int av_samples_fill_arrays(uint8_t **audio_data, int *linesize,
    if (buf_size < 0)
        return buf_size;

+    if (linesize)
+        *linesize = line_size;
+
+    memset(audio_data, 0, planar
+                          ? sizeof(*audio_data) * nb_channels
+                          : sizeof(*audio_data));
+
+    if (!buf)
+        return buf_size;
+
    audio_data[0] = (uint8_t *)buf;
    for (ch = 1; planar && ch < nb_channels; ch++)
        audio_data[ch] = audio_data[ch-1] + line_size;

-    if (linesize)
-        *linesize = line_size;
-
    return buf_size;
 }