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postproc: add basic deblock filter visualization support

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2014-09-19 15:21:36 +02:00
parent 266b3d4fe4
commit ac682955e9
5 changed files with 34 additions and 6 deletions
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20
libpostproc/postprocess.c
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@@ -151,6 +151,7 @@ static const struct PPFilter filters[]=
{"tn", "tmpnoise", 1, 7, 8, TEMP_NOISE_FILTER},
{"fq", "forcequant", 1, 0, 0, FORCE_QUANT},
{"be", "bitexact", 1, 0, 0, BITEXACT},
{"vi", "visualize", 1, 0, 0, VISUALIZE},
{NULL, NULL,0,0,0,0} //End Marker
};
@@ -430,7 +431,7 @@ static inline void horizX1Filter(uint8_t *src, int stride, int QP)
* accurate deblock filter
*/
static av_always_inline void do_a_deblock_C(uint8_t *src, int step,
int stride, const PPContext *c)
int stride, const PPContext *c, int mode)
{
int y;
const int QP= c->QP;
@@ -485,6 +486,16 @@ static av_always_inline void do_a_deblock_C(uint8_t *src, int step,
sums[8] = sums[7] - src[3*step] + last;
sums[9] = sums[8] - src[4*step] + last;
if (mode & VISUALIZE) {
src[0*step] =
src[1*step] =
src[2*step] =
src[3*step] =
src[4*step] =
src[5*step] =
src[6*step] =
src[7*step] = 128;
}
src[0*step]= (sums[0] + sums[2] + 2*src[0*step])>>4;
src[1*step]= (sums[1] + sums[3] + 2*src[1*step])>>4;
src[2*step]= (sums[2] + sums[4] + 2*src[2*step])>>4;
@@ -516,6 +527,13 @@ static av_always_inline void do_a_deblock_C(uint8_t *src, int step,
d = FFMAX(d, q);
}
if ((mode & VISUALIZE) && d) {
d= (d < 0) ? 32 : -32;
src[3*step]= av_clip_uint8(src[3*step] - d);
src[4*step]= av_clip_uint8(src[4*step] + d);
d = 0;
}
src[3*step]-= d;
src[4*step]+= d;
}