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 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
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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