ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinha...@outlook.com> | Tue Nov 30 09:24:51 2021 +0100| [0b934f8f17c19be6b73cc5ecc9a23f7451bee5d0] | committer: Andreas Rheinhardt
avcodec/movtextenc: Reset AVBPrint at the beginning, not end of encoding This avoids abusing a variable called length for the return value and ensures that the AVBPrint is always reset before using it; previously this has been forgotten in some error paths. Reviewed-by: Philip Langdale <phil...@overt.org> Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0b934f8f17c19be6b73cc5ecc9a23f7451bee5d0 --- libavcodec/movtextenc.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/libavcodec/movtextenc.c b/libavcodec/movtextenc.c index 0632463a63..46109e0a5e 100644 --- a/libavcodec/movtextenc.c +++ b/libavcodec/movtextenc.c @@ -646,6 +646,7 @@ static int mov_text_encode_frame(AVCodecContext *avctx, unsigned char *buf, s->text_pos = 0; s->count = 0; s->box_flags = 0; + av_bprint_clear(&s->buffer); for (i = 0; i < sub->num_rects; i++) { const char *ass = sub->rects[i]->ass; @@ -669,27 +670,20 @@ static int mov_text_encode_frame(AVCodecContext *avctx, unsigned char *buf, AV_WB16(buf, s->byte_count); buf += 2; - if (!av_bprint_is_complete(&s->buffer)) { - length = AVERROR(ENOMEM); - goto exit; - } + if (!av_bprint_is_complete(&s->buffer)) + return AVERROR(ENOMEM); - if (!s->buffer.len) { - length = 0; - goto exit; - } + if (!s->buffer.len) + return 0; if (s->buffer.len > bufsize - 3) { av_log(avctx, AV_LOG_ERROR, "Buffer too small for ASS event.\n"); - length = AVERROR_BUFFER_TOO_SMALL; - goto exit; + return AVERROR_BUFFER_TOO_SMALL; } memcpy(buf, s->buffer.str, s->buffer.len); length = s->buffer.len + 2; -exit: - av_bprint_clear(&s->buffer); return length; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
