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Code Issues Releases Activity

utvideoenc: use dsp.sub_hfyu_median_prediction

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Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2012-08-22 16:17:31 +02:00
parent 729b2d02af
commit 12ad68b7e2
1 changed files with 6 additions and 20 deletions
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26
libavcodec/utvideoenc.c
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@@ -262,7 +262,7 @@ static void left_predict(uint8_t *src, uint8_t *dst, int stride,
} }
/* Write data to a plane with median prediction */ /* Write data to a plane with median prediction */
static void median_predict(uint8_t *src, uint8_t *dst, int stride, static void median_predict(UtvideoContext *c, uint8_t *src, uint8_t *dst, int stride,
int width, int height) int width, int height)
{ {
int i, j; int i, j;
@@ -285,26 +285,12 @@ static void median_predict(uint8_t *src, uint8_t *dst, int stride,
* Second line uses top prediction for the first sample, * Second line uses top prediction for the first sample,
* and median for the rest. * and median for the rest.
*/ */
C = src[-stride]; A = C = 0;
*dst++ = src[0] - C;
A = src[0];
for (i = 1; i < width; i++) {
B = src[i - stride];
*dst++ = src[i] - mid_pred(A, B, (A + B - C) & 0xFF);
C = B;
A = src[i];
}
src += stride;
/* Rest of the coded part uses median prediction */ /* Rest of the coded part uses median prediction */
for (j = 2; j < height; j++) { for (j = 1; j < height; j++) {
for (i = 0; i < width; i++) { c->dsp.sub_hfyu_median_prediction(dst, src - stride, src, width, &A, &C);
B = src[i - stride]; dst += width;
*dst++ = src[i] - mid_pred(A, B, (A + B - C) & 0xFF);
C = B;
A = src[i];
}
src += stride; src += stride;
} }
} }
@@ -413,7 +399,7 @@ static int encode_plane(AVCodecContext *avctx, uint8_t *src,
for (i = 0; i < c->slices; i++) { for (i = 0; i < c->slices; i++) {
sstart = send; sstart = send;
send = height * (i + 1) / c->slices; send = height * (i + 1) / c->slices;
median_predict(src + sstart * stride, dst + sstart * width, median_predict(c, src + sstart * stride, dst + sstart * width,
stride, width, send - sstart); stride, width, send - sstart);
} }
break; break;