From 2fe30b4743c0f4c3bdf37b91ae534cafa85e4036 Mon Sep 17 00:00:00 2001
From: Vittorio Giovara <vittorio.giovara@gmail.com>
Date: Mon, 7 Nov 2016 17:36:20 -0500
Subject: [PATCH] hevc: Allow parsing external extradata buffers
---
libavcodec/hevcdec.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index 4dacdd7c88f..d9463370bc9 100644
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -2698,17 +2698,15 @@ static int verify_md5(HEVCContext *s, AVFrame *frame)
return 0;
}
-static int hevc_decode_extradata(HEVCContext *s)
+static int hevc_decode_extradata(HEVCContext *s, uint8_t *buf, int length)
{
AVCodecContext *avctx = s->avctx;
GetByteContext gb;
int ret, i;
- bytestream2_init(&gb, avctx->extradata, avctx->extradata_size);
+ bytestream2_init(&gb, buf, length);
- if (avctx->extradata_size > 3 &&
- (avctx->extradata[0] || avctx->extradata[1] ||
- avctx->extradata[2] > 1)) {
+ if (length > 3 && (buf[0] || buf[1] || buf[2] > 1)) {
/* It seems the extradata is encoded as hvcC format.
* Temporarily, we support configurationVersion==0 until 14496-15 3rd
* is finalized. When finalized, configurationVersion will be 1 and we
@@ -2755,7 +2753,7 @@ static int hevc_decode_extradata(HEVCContext *s)
s->nal_length_size = nal_len_size;
} else {
s->is_nalff = 0;
- ret = decode_nal_units(s, avctx->extradata, avctx->extradata_size);
+ ret = decode_nal_units(s, buf, length);
if (ret < 0)
return ret;
}
@@ -3009,7 +3007,7 @@ static av_cold int hevc_decode_init(AVCodecContext *avctx)
return ret;
if (avctx->extradata_size > 0 && avctx->extradata) {
- ret = hevc_decode_extradata(s);
+ ret = hevc_decode_extradata(s, avctx->extradata, avctx->extradata_size);
if (ret < 0) {
hevc_decode_free(avctx);
return ret;
--
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