[FFmpeg-cvslog] avcodec/utvideodec: bswap directly without memcpy

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Tue Jun 27 21:47:34 2017 +0200| [5eb4701b7d6428ceae7624051dce88e17723ac8a] | committer: Michael Niedermayer

avcodec/utvideodec: bswap directly without memcpy

Reviewed-by: Paul B Mahol <onemda at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5eb4701b7d6428ceae7624051dce88e17723ac8a
---

 libavcodec/utvideodec.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/libavcodec/utvideodec.c b/libavcodec/utvideodec.c
index 96a032bda5..22da8cda1c 100644
--- a/libavcodec/utvideodec.c
+++ b/libavcodec/utvideodec.c
@@ -187,11 +187,9 @@ static int decode_plane10(UtvideoContext *c, int plane_no,
             goto fail;
         }
 
-        memcpy(c->slice_bits, src + slice_data_start + c->slices * 4,
-               slice_size);
         memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
         c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
-                          (uint32_t *) c->slice_bits,
+                          (uint32_t *)(src + slice_data_start + c->slices * 4),
                           (slice_data_end - slice_data_start + 3) >> 2);
         init_get_bits(&gb, c->slice_bits, slice_size * 8);
 
@@ -293,11 +291,9 @@ static int decode_plane(UtvideoContext *c, int plane_no,
             goto fail;
         }
 
-        memcpy(c->slice_bits, src + slice_data_start + c->slices * 4,
-               slice_size);
         memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
         c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
-                          (uint32_t *) c->slice_bits,
+                          (uint32_t *)(src + slice_data_start + c->slices * 4),
                           (slice_data_end - slice_data_start + 3) >> 2);
         init_get_bits(&gb, c->slice_bits, slice_size * 8);