On Thu, 1 Mar 2018 12:32:14 +0000
Rostislav Pehlivanov <atomnu...@gmail.com> wrote:
> Signed-off-by: Rostislav Pehlivanov <atomnu...@gmail.com>
> ---
> libavutil/frame.c | 39 ++++++++++++++++++++++++---------------
> libavutil/frame.h | 13 +++++++++++++
> 2 files changed, 37 insertions(+), 15 deletions(-)
>
> diff --git a/libavutil/frame.c b/libavutil/frame.c
> index 662a7e5ab5..601906fcc2 100644
> --- a/libavutil/frame.c
> +++ b/libavutil/frame.c
> @@ -356,8 +356,10 @@ FF_ENABLE_DEPRECATION_WARNINGS
> }
> memcpy(sd_dst->data, sd_src->data, sd_src->size);
> } else {
> - sd_dst = frame_new_side_data(dst, sd_src->type,
> av_buffer_ref(sd_src->buf));
> + AVBufferRef *buf = av_buffer_ref(sd_src->buf);
> + sd_dst = av_frame_new_side_data_from_buf(dst, sd_src->type, buf);
> if (!sd_dst) {
> + av_buffer_unref(&buf);
> wipe_side_data(dst);
> return AVERROR(ENOMEM);
> }
> @@ -642,9 +644,9 @@ AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame,
> int plane)
> return NULL;
> }
>
> -static AVFrameSideData *frame_new_side_data(AVFrame *frame,
> - enum AVFrameSideDataType type,
> - AVBufferRef *buf)
> +AVFrameSideData *av_frame_new_side_data_from_buf(AVFrame *frame,
> + enum AVFrameSideDataType
> type,
> + AVBufferRef *buf)
> {
> AVFrameSideData *ret, **tmp;
>
> @@ -652,18 +654,20 @@ static AVFrameSideData *frame_new_side_data(AVFrame
> *frame,
> return NULL;
>
> if (frame->nb_side_data > INT_MAX / sizeof(*frame->side_data) - 1)
> - goto fail;
> + return NULL;
> +
> + ret = av_mallocz(sizeof(*ret));
> + if (!ret)
> + return NULL;
>
> tmp = av_realloc(frame->side_data,
> (frame->nb_side_data + 1) * sizeof(*frame->side_data));
> - if (!tmp)
> - goto fail;
> + if (!tmp) {
> + av_free(ret);
> + return NULL;
> + }
> frame->side_data = tmp;
>
> - ret = av_mallocz(sizeof(*ret));
> - if (!ret)
> - goto fail;
> -
> ret->buf = buf;
> ret->data = ret->buf->data;
> ret->size = buf->size;
> @@ -672,17 +676,22 @@ static AVFrameSideData *frame_new_side_data(AVFrame
> *frame,
> frame->side_data[frame->nb_side_data++] = ret;
>
> return ret;
> -fail:
> - av_buffer_unref(&buf);
> - return NULL;
> }
>
> AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
> enum AVFrameSideDataType type,
> int size)
> {
> + AVBufferRef *buf = av_buffer_alloc(size);
> + if (!buf)
> + return NULL;
>
> - return frame_new_side_data(frame, type, av_buffer_alloc(size));
> + AVFrameSideData *ret = av_frame_new_side_data_from_buf(frame, type, buf);
> + if (!ref) {
> + av_buffer_unref(&buf);
> + return NULL;
> + }
> + return ret;
> }
>
> AVFrameSideData *av_frame_get_side_data(const AVFrame *frame,
> diff --git a/libavutil/frame.h b/libavutil/frame.h
> index d54bd9a354..1e3c40a30e 100644
> --- a/libavutil/frame.h
> +++ b/libavutil/frame.h
> @@ -800,6 +800,19 @@ AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
> enum AVFrameSideDataType type,
> int size);
>
> +/**
> + * Add a new side data to a frame from an existing AVBufferRef
> + *
> + * @param frame a frame to which the side data should be added
> + * @param type type of the added side data
> + * @param buf the AVBufferRef to add as side data
> + *
> + * @return newly added side data on success, NULL on error
> + */
Doesn't describe what happens to buf at all. Does the function create a
new reference? Does it take over ownership? If so, what happens on
error?
> +AVFrameSideData *av_frame_new_side_data_from_buf(AVFrame *frame,
> + enum AVFrameSideDataType
> type,
> + AVBufferRef *buf);
> +
> /**
> * @return a pointer to the side data of a given type on success, NULL if
> there
> * is no side data with such type in this frame.
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