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Code Issues Releases Activity

hevc: simplify splitting the transform tree blocks

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This commit is contained in:
Anton Khirnov 2014-07-27 09:19:16 +00:00
parent e36a2f4c52
commit 53a11135f2
1 changed files with 17 additions and 22 deletions
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39
libavcodec/hevc.c
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@ -1392,29 +1392,24 @@ static int hls_transform_tree(HEVCContext *s, int x0, int y0,
}
if (split_transform_flag) {
int x1 = x0 + ((1 << log2_trafo_size) >> 1);
int y1 = y0 + ((1 << log2_trafo_size) >> 1);
const int trafo_size_split = 1 << (log2_trafo_size - 1);
const int x1 = x0 + trafo_size_split;
const int y1 = y0 + trafo_size_split;
ret = hls_transform_tree(s, x0, y0, x0, y0, cb_xBase, cb_yBase,
log2_cb_size, log2_trafo_size - 1,
trafo_depth + 1, 0);
if (ret < 0)
return ret;
ret = hls_transform_tree(s, x1, y0, x0, y0, cb_xBase, cb_yBase,
log2_cb_size, log2_trafo_size - 1,
trafo_depth + 1, 1);
if (ret < 0)
return ret;
ret = hls_transform_tree(s, x0, y1, x0, y0, cb_xBase, cb_yBase,
log2_cb_size, log2_trafo_size - 1,
trafo_depth + 1, 2);
if (ret < 0)
return ret;
ret = hls_transform_tree(s, x1, y1, x0, y0, cb_xBase, cb_yBase,
log2_cb_size, log2_trafo_size - 1,
trafo_depth + 1, 3);
if (ret < 0)
return ret;
#define SUBDIVIDE(x, y, idx) \
do { \
ret = hls_transform_tree(s, x, y, x0, y0, cb_xBase, cb_yBase, log2_cb_size, \
log2_trafo_size - 1, trafo_depth + 1, idx); \
if (ret < 0) \
return ret; \
} while (0)
SUBDIVIDE(x0, y0, 0);
SUBDIVIDE(x1, y0, 1);
SUBDIVIDE(x0, y1, 2);
SUBDIVIDE(x1, y1, 3);
#undef SUBDIVIDE
} else {
int min_tu_size = 1 << s->sps->log2_min_tb_size;
int log2_min_tu_size = s->sps->log2_min_tb_size;