[FFmpeg-devel] [PATCH 10/11] avcodec/aptxdec: Process data in complete blocks only

[Andreas Rheinhardt]

The APTX (HD) decoder decodes blocks of four (six) bytes to four
output samples. It makes no sense to handle incomplete blocks:
They would just lead to synchronization errors, in which case
the complete frame is discarded. So only handle complete blocks.
This also avoids reading from the packet's padding.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
 libavcodec/aptxdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/aptxdec.c b/libavcodec/aptxdec.c
index bdcc076c41..de661476b7 100644
--- a/libavcodec/aptxdec.c
+++ b/libavcodec/aptxdec.c
@@ -148,7 +148,7 @@ static int aptx_decode_frame(AVCodecContext *avctx, void *data,
     /* get output buffer */
     frame->channels = NB_CHANNELS;
     frame->format = AV_SAMPLE_FMT_S32P;
-    frame->nb_samples = 4 * avpkt->size / s->block_size;
+    frame->nb_samples = 4 * (avpkt->size / s->block_size);
     if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
         return ret;
 
-- 
2.30.2