[FFmpeg-devel] [PATCH 1/3] avformat/evcdec: Avoid nonsense casts

Andreas Rheinhardt andreas.rheinhardt at outlook.com
Fri Jul 7 00:06:05 EEST 2023


For uint8_t buf[EVC_NALU_LENGTH_PREFIX_SIZE], &buf still points
to the beginning of buf, but it is of type "pointer to array of
EVC_NALU_LENGTH_PREFIX_SIZE uint8_t" (i.e. pointer arithmetic
would operate on blocks of size EVC_NALU_LENGTH_PREFIX_SIZE).
This is of course a different type than uint8_t*, which is why
there have been casts in evc_read_packet(). But these are unnecessary
if one justs removes the unnecessary address-of operator.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
 libavformat/evcdec.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavformat/evcdec.c b/libavformat/evcdec.c
index 73aab6c52f..9886542311 100644
--- a/libavformat/evcdec.c
+++ b/libavformat/evcdec.c
@@ -65,7 +65,7 @@ static int annexb_probe(const AVProbeData *p)
     int nalu_type;
     size_t nalu_size;
     int got_sps = 0, got_pps = 0, got_idr = 0, got_nonidr = 0;
-    unsigned char *bits = (unsigned char *)p->buf;
+    unsigned char *bits = p->buf;
     int bytes_to_read = p->buf_size;
 
     while (bytes_to_read > EVC_NALU_LENGTH_PREFIX_SIZE) {
@@ -159,11 +159,11 @@ static int evc_read_packet(AVFormatContext *s, AVPacket *pkt)
         if (ret < 0)
             return ret;
 
-        ret = avio_read(s->pb, (unsigned char *)&buf, EVC_NALU_LENGTH_PREFIX_SIZE);
+        ret = avio_read(s->pb, buf, EVC_NALU_LENGTH_PREFIX_SIZE);
         if (ret < 0)
             return ret;
 
-        nalu_size = evc_read_nal_unit_length((const uint8_t *)&buf, EVC_NALU_LENGTH_PREFIX_SIZE);
+        nalu_size = evc_read_nal_unit_length(buf, EVC_NALU_LENGTH_PREFIX_SIZE);
         if (!nalu_size || nalu_size > INT_MAX)
             return AVERROR_INVALIDDATA;
 
-- 
2.34.1



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