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[vp9d]: fix bug: intra_only reset frame context

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tips: reset frame context modes
a) intraonly && resetctx==2, reset all context.
b) intraonly && resetctx==3, rest currently used.
c) keyframe || intraonly, set framectxid = 0.

Change-Id: I0d2c38277f720d33a98f7f5148c96f560e423365
Signed-off-by: Ding Wei <leo.ding@rock-chips.com>
This commit is contained in:
Ding Wei
2018-07-02 15:17:10 +08:00
committed by Herman Chen
parent 69e51089b0
commit 993dbb0f8c
1 changed files with 8 additions and 1 deletions
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9
mpp/codec/dec/vp9/vp9d_parser.c
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@@ -1059,7 +1059,8 @@ static RK_S32 decode_parser_header(Vp9CodecContext *ctx,
}
}
if (s->keyframe || s->errorres || s->intraonly) {
if (s->keyframe || s->errorres ||
(s->intraonly && s->resetctx == 3)) {
s->prob_ctx[0].p = s->prob_ctx[1].p = s->prob_ctx[2].p =
s->prob_ctx[3].p = vp9_default_probs;
memcpy(s->prob_ctx[0].coef, vp9_default_coef_probs,
@@ -1070,7 +1071,13 @@ static RK_S32 decode_parser_header(Vp9CodecContext *ctx,
sizeof(vp9_default_coef_probs));
memcpy(s->prob_ctx[3].coef, vp9_default_coef_probs,
sizeof(vp9_default_coef_probs));
} else if (s->intraonly && s->resetctx == 2) {
s->prob_ctx[c].p = vp9_default_probs;
memcpy(s->prob_ctx[c].coef, vp9_default_coef_probs,
sizeof(vp9_default_coef_probs));
}
if (s->keyframe || s->errorres || s->intraonly)
s->framectxid = c = 0;
// next 16 bits is size of the rest of the header (arith-coded)
size2 = mpp_get_bits(&s->gb, 16);