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| author | James Almer <jamrial@gmail.com> | 2019-08-30 11:37:25 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2019-09-04 10:07:12 -0300 |
| commit | 9ea6d2149e25d68885a24894bb911077b05388c4 (patch) | |
| tree | d302ed27dd814bea2189537f62c4120f69ecb669 /libavcodec/decode.c | |
| parent | 39f129593756e3e270ed3881ca076627f30e1eb7 (diff) | |
| download | ffmpeg-9ea6d2149e25d68885a24894bb911077b05388c4.tar.gz | |
avcodec/decode: add a flags parameter to ff_reget_buffer()
Some decoders may not need a writable buffer in some specific cases, but only
a reference to the existing buffer with updated frame properties instead, for
the purpose of returning duplicate frames. For this, the
FF_REGET_BUFFER_FLAG_READONLY flag is added, which will prevent potential
allocations and buffer copies when they are not needed.
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavcodec/decode.c')
| -rw-r--r-- | libavcodec/decode.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libavcodec/decode.c b/libavcodec/decode.c index cf9676e2ac..a9ea5a51e6 100644 --- a/libavcodec/decode.c +++ b/libavcodec/decode.c @@ -1970,7 +1970,7 @@ int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) return ret; } -static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame) +static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags) { AVFrame *tmp; int ret; @@ -1986,7 +1986,7 @@ static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame) if (!frame->data[0]) return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF); - if (av_frame_is_writable(frame)) + if ((flags & FF_REGET_BUFFER_FLAG_READONLY) || av_frame_is_writable(frame)) return ff_decode_frame_props(avctx, frame); tmp = av_frame_alloc(); @@ -2007,9 +2007,9 @@ static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame) return 0; } -int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame) +int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) { - int ret = reget_buffer_internal(avctx, frame); + int ret = reget_buffer_internal(avctx, frame, flags); if (ret < 0) av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); return ret; |