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Code Issues Releases Activity

hevc: Bound check cu_qp_delta

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The T-REC-H.265-2013044 page 91 states it has to be in the range
[-(26 + s->sps->qp_bd_offset / 2), (25 + s->sps->qp_bd_offset / 2)].
This commit is contained in:
Luca Barbato 2014-01-11 20:13:20 +01:00
parent 0d999333f9
commit e22ebd04bc
1 changed files with 54 additions and 23 deletions
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63
libavcodec/hevc.c
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@ -1224,7 +1224,7 @@ static void hls_residual_coding(HEVCContext *s, int x0, int y0,
}
}
static void hls_transform_unit(HEVCContext *s, int x0, int y0,
static int hls_transform_unit(HEVCContext *s, int x0, int y0,
int xBase, int yBase, int cb_xBase, int cb_yBase,
int log2_cb_size, int log2_trafo_size,
int trafo_depth, int blk_idx)
@ -1262,6 +1262,18 @@ static void hls_transform_unit(HEVCContext *s, int x0, int y0,
if (ff_hevc_cu_qp_delta_sign_flag(s) == 1)
lc->tu.cu_qp_delta = -lc->tu.cu_qp_delta;
lc->tu.is_cu_qp_delta_coded = 1;
if (lc->tu.cu_qp_delta < -(26 + s->sps->qp_bd_offset / 2) ||
lc->tu.cu_qp_delta > (25 + s->sps->qp_bd_offset / 2)) {
av_log(s->avctx, AV_LOG_ERROR,
"The cu_qp_delta %d is outside the valid range "
"[%d, %d].\n",
lc->tu.cu_qp_delta,
-(26 + s->sps->qp_bd_offset / 2),
(25 + s->sps->qp_bd_offset / 2));
return AVERROR_INVALIDDATA;
}
ff_hevc_set_qPy(s, x0, y0, cb_xBase, cb_yBase, log2_cb_size);
}
@ -1297,6 +1309,7 @@ static void hls_transform_unit(HEVCContext *s, int x0, int y0,
hls_residual_coding(s, xBase, yBase, log2_trafo_size, scan_idx_c, 2);
}
}
return 0;
}
static void set_deblocking_bypass(HEVCContext *s, int x0, int y0, int log2_cb_size)
@ -1314,13 +1327,14 @@ static void set_deblocking_bypass(HEVCContext *s, int x0, int y0, int log2_cb_si
s->is_pcm[i + j * min_pu_width] = 2;
}
static void hls_transform_tree(HEVCContext *s, int x0, int y0,
static int hls_transform_tree(HEVCContext *s, int x0, int y0,
int xBase, int yBase, int cb_xBase, int cb_yBase,
int log2_cb_size, int log2_trafo_size,
int trafo_depth, int blk_idx)
{
HEVCLocalContext *lc = &s->HEVClc;
uint8_t split_transform_flag;
int ret;
if (trafo_depth > 0 && log2_trafo_size == 2) {
SAMPLE_CBF(lc->tt.cbf_cb[trafo_depth], x0, y0) =
@ -1375,14 +1389,26 @@ static void hls_transform_tree(HEVCContext *s, int x0, int y0,
int x1 = x0 + ((1 << log2_trafo_size) >> 1);
int y1 = y0 + ((1 << log2_trafo_size) >> 1);
hls_transform_tree(s, x0, y0, x0, y0, cb_xBase, cb_yBase, log2_cb_size,
log2_trafo_size - 1, trafo_depth + 1, 0);
hls_transform_tree(s, x1, y0, x0, y0, cb_xBase, cb_yBase, log2_cb_size,
log2_trafo_size - 1, trafo_depth + 1, 1);
hls_transform_tree(s, x0, y1, x0, y0, cb_xBase, cb_yBase, log2_cb_size,
log2_trafo_size - 1, trafo_depth + 1, 2);
hls_transform_tree(s, x1, y1, x0, y0, cb_xBase, cb_yBase, log2_cb_size,
log2_trafo_size - 1, trafo_depth + 1, 3);
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;
} else {
int min_tu_size = 1 << s->sps->log2_min_tb_size;
int log2_min_tu_size = s->sps->log2_min_tb_size;
@ -1394,9 +1420,11 @@ static void hls_transform_tree(HEVCContext *s, int x0, int y0,
lc->tt.cbf_luma = ff_hevc_cbf_luma_decode(s, trafo_depth);
}
hls_transform_unit(s, x0, y0, xBase, yBase, cb_xBase, cb_yBase,
log2_cb_size, log2_trafo_size, trafo_depth, blk_idx);
ret = hls_transform_unit(s, x0, y0, xBase, yBase, cb_xBase, cb_yBase,
log2_cb_size, log2_trafo_size, trafo_depth,
blk_idx);
if (ret < 0)
return ret;
// TODO: store cbf_luma somewhere else
if (lc->tt.cbf_luma) {
int i, j;
@ -1416,6 +1444,7 @@ static void hls_transform_tree(HEVCContext *s, int x0, int y0,
set_deblocking_bypass(s, x0, y0, log2_trafo_size);
}
}
return 0;
}
static int hls_pcm_sample(HEVCContext *s, int x0, int y0, int log2_cb_size)
@ -2048,7 +2077,7 @@ static int hls_coding_unit(HEVCContext *s, int x0, int y0, int log2_cb_size)
int min_cb_width = s->sps->min_cb_width;
int x_cb = x0 >> log2_min_cb_size;
int y_cb = y0 >> log2_min_cb_size;
int x, y;
int x, y, ret;
lc->cu.x = x0;
lc->cu.y = y0;
@ -2105,7 +2134,6 @@ static int hls_coding_unit(HEVCContext *s, int x0, int y0, int log2_cb_size)
lc->cu.pcm_flag = ff_hevc_pcm_flag_decode(s);
}
if (lc->cu.pcm_flag) {
int ret;
intra_prediction_unit_default_value(s, x0, y0, log2_cb_size);
ret = hls_pcm_sample(s, x0, y0, log2_cb_size);
if (s->sps->pcm.loop_filter_disable_flag)
@ -2164,8 +2192,11 @@ static int hls_coding_unit(HEVCContext *s, int x0, int y0, int log2_cb_size)
lc->cu.max_trafo_depth = lc->cu.pred_mode == MODE_INTRA ?
s->sps->max_transform_hierarchy_depth_intra + lc->cu.intra_split_flag :
s->sps->max_transform_hierarchy_depth_inter;
hls_transform_tree(s, x0, y0, x0, y0, x0, y0, log2_cb_size,
ret = hls_transform_tree(s, x0, y0, x0, y0, x0, y0,
log2_cb_size,
log2_cb_size, 0, 0);
if (ret < 0)
return ret;
} else {
if (!s->sh.disable_deblocking_filter_flag)
ff_hevc_deblocking_boundary_strengths(s, x0, y0, log2_cb_size,