From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Subject: [FFmpeg-devel] [PATCH 1/3] avformat/evcdec: Avoid nonsense casts
Date: Thu, 6 Jul 2023 23:06:05 +0200
Message-ID: <GV1P250MB0737A5B6C108D1223DD82FBF8F2CA@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM> (raw)
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@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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next reply other threads:[~2023-07-06 21:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-06 21:06 Andreas Rheinhardt [this message]
2023-07-06 21:08 ` [FFmpeg-devel] [PATCH 2/3] avformat/evcdec: Check that enough data has been read Andreas Rheinhardt
2023-07-07 1:14 ` James Almer
2023-07-07 1:20 ` James Almer
2023-07-07 1:30 ` Andreas Rheinhardt
2023-07-07 1:31 ` James Almer
2023-07-07 1:52 ` Andreas Rheinhardt
2023-07-07 1:24 ` Andreas Rheinhardt
2023-07-07 2:12 ` James Almer
2023-07-06 21:08 ` [FFmpeg-devel] [PATCH 3/3] avformat/evc: Don't cast const away, avoid loop Andreas Rheinhardt
2023-07-07 1:15 ` [FFmpeg-devel] [PATCH 1/3] avformat/evcdec: Avoid nonsense casts James Almer
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