From: James Almer <jamrial@gmail.com>
Date: Sun, 6 Jun 2021 15:40:37 +0000 (-0300)
Subject: a52: add some padding bytes to outbuf
X-Git-Tag: v1.2.6~30
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=29f88436a7f3296d8ae78972d698a27196b37715;p=alsa-plugins.git

a52: add some padding bytes to outbuf

Since it's used as AVPacket payload, the API requires it to be padded.

BugLink: https://github.com/alsa-project/alsa-plugins/pull/23
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

diff --git a/a52/pcm_a52.c b/a52/pcm_a52.c
index b6a8f55..2ccc478 100644
--- a/a52/pcm_a52.c
+++ b/a52/pcm_a52.c
@@ -62,6 +62,12 @@
 #define AV_CODEC_ID_AC3 CODEC_ID_AC3
 #endif
 
+#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(56, 56, 0)
+#ifndef AV_INPUT_BUFFER_PADDING_SIZE
+#define AV_INPUT_BUFFER_PADDING_SIZE   FF_INPUT_BUFFER_PADDING_SIZE
+#endif
+#endif
+
 #if LIBAVCODEC_VERSION_INT < 0x371c01
 #define av_frame_alloc avcodec_alloc_frame
 #define av_frame_free avcodec_free_frame
@@ -623,9 +629,10 @@ static int a52_prepare(snd_pcm_ioplug_t *io)
 		return -EINVAL;
 
 	rec->outbuf_size = rec->avctx->frame_size * 4;
-	rec->outbuf = malloc(rec->outbuf_size);
+	rec->outbuf = malloc(rec->outbuf_size + AV_INPUT_BUFFER_PADDING_SIZE);
 	if (! rec->outbuf)
 		return -ENOMEM;
+	memset(rec->outbuf + rec->outbuf_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
 
 	if (alloc_input_buffer(io))
 		return -ENOMEM;