Commit c3a9247e authored by hui su's avatar hui su

VP9: adjust trellis quant optimization RD parameters

Coding gain:
lowres  0.64%
midres  0.38%
hdres   0.58%

Change-Id: I233fa2a4b24bd1e15091a5f5ef6aff661f3f50ec
parent c8f56d23
......@@ -62,8 +62,7 @@ typedef struct vp9_token_state {
int16_t qc;
} vp9_token_state;
// TODO(huisu): experiment to find optimal RD numbers.
static const int plane_rd_mult[PLANE_TYPES] = { 4, 2 };
static const int plane_rd_mult[REF_TYPES][PLANE_TYPES] ={ {10, 6}, {8, 7}, };
#define UPDATE_RD_COST()\
{\
......@@ -110,7 +109,8 @@ static int optimize_b(MACROBLOCK *mb, int plane, int block,
const int16_t *const scan = so->scan;
const int16_t *const nb = so->neighbors;
int next = eob, sz = 0;
int64_t rdmult = mb->rdmult * plane_rd_mult[type], rddiv = mb->rddiv;
const int64_t rdmult = (mb->rdmult * plane_rd_mult[ref][type]) >> 1;
const int64_t rddiv = mb->rddiv;
int64_t rd_cost0, rd_cost1;
int rate0, rate1, error0, error1;
int16_t t0, t1;
......@@ -126,9 +126,6 @@ static int optimize_b(MACROBLOCK *mb, int plane, int block,
assert(eob <= default_eob);
/* Now set up a Viterbi trellis to evaluate alternative roundings. */
if (!ref)
rdmult = (rdmult * 9) >> 4;
/* Initialize the sentinel node of the trellis. */
tokens[eob][0].rate = 0;
tokens[eob][0].error = 0;
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment