replaygain: fix gain sign decoding

[ffmpeg] / libavformat / aviobuf.c

diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 3f27d6976c2abcf3cb9a60a3fe9e2eb6c32659d5..0024f9e8b22e093190c5fdb79d4995f8bedc7b1d 100644 (file)
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -880,8 +880,11 @@ static int dyn_buf_write(void *opaque, uint8_t *buf, int buf_size)
 
     if (new_allocated_size > d->allocated_size) {
         int err;
-        if ((err = av_reallocp(&d->buffer, new_allocated_size)) < 0)
+        if ((err = av_reallocp(&d->buffer, new_allocated_size)) < 0) {
+            d->allocated_size = 0;
+            d->size = 0;
             return err;
+        }
         d->allocated_size = new_allocated_size;
     }
     memcpy(d->buffer + d->pos, buf, buf_size);
@@ -961,6 +964,11 @@ int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
     static const char padbuf[FF_INPUT_BUFFER_PADDING_SIZE] = {0};
     int padding = 0;
 
+    if (!s) {
+        *pbuffer = NULL;
+        return 0;
+    }
+
     /* don't attempt to pad fixed-size packet buffers */
     if (!s->max_packet_size) {
         avio_write(s, padbuf, sizeof(padbuf));