From 436f00b10c062b75c7aab276c4a7d64524bd0444 Mon Sep 17 00:00:00 2001 From: Marton Balint Date: Tue, 21 Feb 2017 23:50:56 +0100 Subject: [PATCH] avcodec/wrapped_avframe: allocate a buffer with padding This ensures that the wrapped avframe will not get reallocated later, which would invalidate internal references such as extended data. Reviewed-by: wm4 Signed-off-by: Marton Balint --- libavcodec/wrapped_avframe.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/libavcodec/wrapped_avframe.c b/libavcodec/wrapped_avframe.c index 13c8d8a239..14360320ff 100644 --- a/libavcodec/wrapped_avframe.c +++ b/libavcodec/wrapped_avframe.c @@ -43,19 +43,31 @@ static int wrapped_avframe_encode(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet) { AVFrame *wrapped = av_frame_clone(frame); + uint8_t *data; + int size = sizeof(*wrapped) + AV_INPUT_BUFFER_PADDING_SIZE; if (!wrapped) return AVERROR(ENOMEM); - pkt->buf = av_buffer_create((uint8_t *)wrapped, sizeof(*wrapped), + data = av_mallocz(size); + if (!data) { + av_frame_free(&wrapped); + return AVERROR(ENOMEM); + } + + pkt->buf = av_buffer_create(data, size, wrapped_avframe_release_buffer, NULL, AV_BUFFER_FLAG_READONLY); if (!pkt->buf) { av_frame_free(&wrapped); + av_freep(&data); return AVERROR(ENOMEM); } - pkt->data = (uint8_t *)wrapped; + av_frame_move_ref((AVFrame*)data, wrapped); + av_frame_free(&wrapped); + + pkt->data = data; pkt->size = sizeof(*wrapped); pkt->flags |= AV_PKT_FLAG_KEY; -- 2.11.0