basic type mechanism working

1 files changed, 3 insertions, 7 deletions

diff --git a/ffmpeg/libavformat/apc.c b/ffmpeg/libavformat/apc.c
index bb28a62..21bb514 100644
--- a/ffmpeg/libavformat/apc.c
+++ b/ffmpeg/libavformat/apc.c
@@ -23,6 +23,7 @@
 
 #include "libavutil/channel_layout.h"
 #include "avformat.h"
+#include "internal.h"
 
 static int apc_probe(AVProbeData *p)
 {
@@ -51,14 +52,9 @@ static int apc_read_header(AVFormatContext *s)
     avio_rl32(pb); /* number of samples */
     st->codec->sample_rate = avio_rl32(pb);
 
-    st->codec->extradata_size = 2 * 4;
-    st->codec->extradata = av_malloc(st->codec->extradata_size +
-                                     FF_INPUT_BUFFER_PADDING_SIZE);
-    if (!st->codec->extradata)
-        return AVERROR(ENOMEM);
-
     /* initial predictor values for adpcm decoder */
-    avio_read(pb, st->codec->extradata, 2 * 4);
+    if (ff_get_extradata(st->codec, pb, 2 * 4) < 0)
+        return AVERROR(ENOMEM);
 
     if (avio_rl32(pb)) {
         st->codec->channels       = 2;