diff options
Diffstat (limited to 'libavcodec/decode.c')
-rw-r--r-- | libavcodec/decode.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/libavcodec/decode.c b/libavcodec/decode.c index 5c80ef9cd0..f3e8b72be7 100644 --- a/libavcodec/decode.c +++ b/libavcodec/decode.c @@ -1857,6 +1857,72 @@ int ff_decode_preinit(AVCodecContext *avctx) return 0; } +/** + * Check side data preference and clear existing side data from frame + * if needed. + * + * @retval 0 side data of this type can be added to frame + * @retval 1 side data of this type should not be added to frame + */ +static int side_data_pref(const AVCodecContext *avctx, AVFrame *frame, + enum AVFrameSideDataType type) +{ + DecodeContext *dc = decode_ctx(avctx->internal); + + // Note: could be skipped for `type` without corresponding packet sd + if (av_frame_get_side_data(frame, type)) { + if (dc->side_data_pref_mask & (1ULL << type)) + return 1; + av_frame_remove_side_data(frame, type); + } + + return 0; +} + + +int ff_frame_new_side_data(const AVCodecContext *avctx, AVFrame *frame, + enum AVFrameSideDataType type, size_t size, + AVFrameSideData **psd) +{ + AVFrameSideData *sd; + + if (side_data_pref(avctx, frame, type)) { + if (psd) + *psd = NULL; + return 0; + } + + sd = av_frame_new_side_data(frame, type, size); + if (psd) + *psd = sd; + + return sd ? 0 : AVERROR(ENOMEM); +} + +int ff_frame_new_side_data_from_buf(const AVCodecContext *avctx, + AVFrame *frame, enum AVFrameSideDataType type, + AVBufferRef **buf, AVFrameSideData **psd) +{ + AVFrameSideData *sd = NULL; + int ret = 0; + + if (side_data_pref(avctx, frame, type)) + goto finish; + + sd = av_frame_new_side_data_from_buf(frame, type, *buf); + if (sd) + *buf = NULL; + else + ret = AVERROR(ENOMEM); + +finish: + av_buffer_unref(buf); + if (psd) + *psd = sd; + + return ret; +} + int ff_copy_palette(void *dst, const AVPacket *src, void *logctx) { size_t size; |