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commit 574c34228cb1bb8e4aaec3f2d9ffaa90aad2e06f Author: Lynne <[email protected]> AuthorDate: Wed Sep 23 20:27:15 2026 +0900 Commit: James Almer <[email protected]> CommitDate: Fri Sep 25 02:13:39 2026 +0000 avcodec/opus/rc: zero the unused bytes of an encoded frame When the range coded data and the raw bits of a frame did not meet, the bytes between them were copied from the stale contents of the range coder buffer, and when there were no raw bits, the bytes after the range coded data were left as whatever the packet buffer held. Zero them instead, like libopus does. --- libavcodec/opus/rc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/libavcodec/opus/rc.c b/libavcodec/opus/rc.c index 8e58a52b85..57ac272934 100644 --- a/libavcodec/opus/rc.c +++ b/libavcodec/opus/rc.c @@ -393,9 +393,17 @@ void ff_opus_rc_enc_end(OpusRangeCoder *rc, uint8_t *dst, int size) rb_src = rc->buf + OPUS_MAX_FRAME_SIZE + 12 - rc->rb.bytes; rb_dst = dst + FFMAX(size - rc->rb.bytes, 0); lap = &dst[rng_bytes] - rb_dst; + if (lap < 0) { + /* Zero the unused bytes between the range coded and the raw bits + * parts instead of copying whatever is in the buffer there */ + memset(&dst[rng_bytes], 0, -lap); + lap = 0; + } for (i = 0; i < lap; i++) rb_dst[i] |= rb_src[i]; memcpy(&rb_dst[lap], &rb_src[lap], FFMAX(rc->rb.bytes - lap, 0)); + } else if (rng_bytes < size) { + memset(&dst[rng_bytes], 0, size - rng_bytes); } } -- To stop receiving notification emails like this one, please contact [email protected]. _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
