[FFmpeg-cvslog] lavfi/tinterlace: declare source buffers in copy_picture_field() as const
Stefano Sabatini
git at videolan.org
Thu Sep 6 00:44:16 CEST 2012
ffmpeg | branch: master | Stefano Sabatini <stefasab at gmail.com> | Wed Sep 5 10:37:12 2012 +0200| [9a2daef53ffe6bc0f1b879d55d57a1eef9d1f684] | committer: Stefano Sabatini
lavfi/tinterlace: declare source buffers in copy_picture_field() as const
Increase performance (slightly).
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9a2daef53ffe6bc0f1b879d55d57a1eef9d1f684
---
libavfilter/vf_tinterlace.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/libavfilter/vf_tinterlace.c b/libavfilter/vf_tinterlace.c
index 6ec5674..d41889a 100644
--- a/libavfilter/vf_tinterlace.c
+++ b/libavfilter/vf_tinterlace.c
@@ -175,7 +175,7 @@ static int config_out_props(AVFilterLink *outlink)
*/
static inline
void copy_picture_field(uint8_t *dst[4], int dst_linesize[4],
- uint8_t *src[4], int src_linesize[4],
+ const uint8_t *src[4], int src_linesize[4],
enum PixelFormat format, int w, int src_h,
int src_field, int interleave, int dst_field)
{
@@ -187,7 +187,7 @@ void copy_picture_field(uint8_t *dst[4], int dst_linesize[4],
int lines = plane == 1 || plane == 2 ? src_h >> vsub : src_h;
int linesize = av_image_get_linesize(format, w, plane);
uint8_t *dstp = dst[plane];
- uint8_t *srcp = src[plane];
+ const uint8_t *srcp = src[plane];
lines /= k;
if (src_field == FIELD_LOWER)
srcp += src_linesize[plane];
@@ -235,12 +235,12 @@ static int end_frame(AVFilterLink *inlink)
/* write odd frame lines into the upper field of the new frame */
copy_picture_field(out->data, out->linesize,
- cur->data, cur->linesize,
+ (const uint8_t **)cur->data, cur->linesize,
inlink->format, inlink->w, inlink->h,
FIELD_UPPER_AND_LOWER, 1, FIELD_UPPER);
/* write even frame lines into the lower field of the new frame */
copy_picture_field(out->data, out->linesize,
- next->data, next->linesize,
+ (const uint8_t **)next->data, next->linesize,
inlink->format, inlink->w, inlink->h,
FIELD_UPPER_AND_LOWER, 1, FIELD_LOWER);
avfilter_unref_bufferp(&tinterlace->next);
@@ -261,12 +261,12 @@ static int end_frame(AVFilterLink *inlink)
field = (1 + tinterlace->frame) & 1 ? FIELD_UPPER : FIELD_LOWER;
/* copy upper and lower fields */
copy_picture_field(out->data, out->linesize,
- cur->data, cur->linesize,
+ (const uint8_t **)cur->data, cur->linesize,
inlink->format, inlink->w, inlink->h,
FIELD_UPPER_AND_LOWER, 1, field);
/* pad with black the other field */
copy_picture_field(out->data, out->linesize,
- tinterlace->black_data, tinterlace->black_linesize,
+ (const uint8_t **)tinterlace->black_data, tinterlace->black_linesize,
inlink->format, inlink->w, inlink->h,
FIELD_UPPER_AND_LOWER, 1, !field);
break;
@@ -283,12 +283,12 @@ static int end_frame(AVFilterLink *inlink)
/* copy upper/lower field from cur */
copy_picture_field(out->data, out->linesize,
- cur->data, cur->linesize,
+ (const uint8_t **)cur->data, cur->linesize,
inlink->format, inlink->w, inlink->h,
tff ? FIELD_UPPER : FIELD_LOWER, 1, tff ? FIELD_UPPER : FIELD_LOWER);
/* copy lower/upper field from next */
copy_picture_field(out->data, out->linesize,
- next->data, next->linesize,
+ (const uint8_t **)next->data, next->linesize,
inlink->format, inlink->w, inlink->h,
tff ? FIELD_LOWER : FIELD_UPPER, 1, tff ? FIELD_LOWER : FIELD_UPPER);
avfilter_unref_bufferp(&tinterlace->next);
@@ -310,12 +310,12 @@ static int end_frame(AVFilterLink *inlink)
/* write current frame second field lines into the second field of the new frame */
copy_picture_field(out->data, out->linesize,
- cur->data, cur->linesize,
+ (const uint8_t **)cur->data, cur->linesize,
inlink->format, inlink->w, inlink->h,
tff ? FIELD_LOWER : FIELD_UPPER, 1, tff ? FIELD_LOWER : FIELD_UPPER);
/* write next frame first field lines into the first field of the new frame */
copy_picture_field(out->data, out->linesize,
- next->data, next->linesize,
+ (const uint8_t **)next->data, next->linesize,
inlink->format, inlink->w, inlink->h,
tff ? FIELD_UPPER : FIELD_LOWER, 1, tff ? FIELD_UPPER : FIELD_LOWER);
break;
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