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quantize_b_c: Refactor highbd and lowbd versions. 

The two functions were exactly the same.

BUG=aomedia:442

Change-Id: I8062dc06ec054d58a97be7396fc07bafc13e5fd5
This commit is contained in:
Urvang Joshi 2017-04-20 11:37:02 -07:00
Родитель f7ba6470a5
Коммит e78b6f4da1
1 изменённых файлов: 9 добавлений и 75 удалений
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84
av1/encoder/av1_quantize.c
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@ -1686,83 +1686,17 @@ void av1_highbd_quantize_b_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
const int16_t *scan, const int16_t *iscan,
#if CONFIG_AOM_QM
const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr,
#endif
int log_scale) {
int i, non_zero_count = (int)n_coeffs, eob = -1;
int zbins[2] = { zbin_ptr[0], zbin_ptr[1] };
int round[2] = { round_ptr[0], round_ptr[1] };
int nzbins[2];
int scale = 1;
int shift = 16;
(void)iscan;
if (log_scale > 0) {
zbins[0] = ROUND_POWER_OF_TWO(zbin_ptr[0], log_scale);
zbins[1] = ROUND_POWER_OF_TWO(zbin_ptr[1], log_scale);
round[0] = ROUND_POWER_OF_TWO(round_ptr[0], log_scale);
round[1] = ROUND_POWER_OF_TWO(round_ptr[1], log_scale);
scale = 1 << log_scale;
shift = 16 - log_scale;
}
nzbins[0] = zbins[0] * -1;
nzbins[1] = zbins[1] * -1;
memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr));
memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr));
if (!skip_block) {
// Pre-scan pass
for (i = (int)n_coeffs - 1; i >= 0; i--) {
const int rc = scan[i];
const int coeff = coeff_ptr[rc];
if (coeff < zbins[rc != 0] && coeff > nzbins[rc != 0])
non_zero_count--;
else
break;
}
// Quantization pass: All coefficients with index >= zero_flag are
// skippable. Note: zero_flag can be zero.
for (i = 0; i < non_zero_count; i++) {
const int rc = scan[i];
#if CONFIG_AOM_QM
const qm_val_t wt = qm_ptr[rc];
const qm_val_t iwt = iqm_ptr[rc];
const int dequant =
(dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >>
AOM_QM_BITS;
#endif
const int coeff = coeff_ptr[rc];
const int coeff_sign = (coeff >> 31);
const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign;
#if CONFIG_AOM_QM
if (abs_coeff * wt >= (zbins[rc != 0] << AOM_QM_BITS)) {
#else
if (abs_coeff >= zbins[rc != 0]) {
#endif
const int64_t tmp1 = abs_coeff + round[rc != 0];
const int64_t tmp2 = ((tmp1 * quant_ptr[rc != 0]) >> 16) + tmp1;
#if CONFIG_AOM_QM
const uint32_t abs_qcoeff = (uint32_t)(
(tmp2 * wt * quant_shift_ptr[rc != 0]) >> (AOM_QM_BITS + shift));
qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign);
dqcoeff_ptr[rc] = (qcoeff_ptr[rc] * dequant) / scale;
#else
const uint32_t abs_qcoeff =
(uint32_t)((tmp2 * quant_shift_ptr[rc != 0]) >> shift);
qcoeff_ptr[rc] =
(tran_low_t)((int)(abs_qcoeff ^ coeff_sign) - coeff_sign);
dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0] / scale;
#endif // CONFIG_AOM_QM
if (abs_qcoeff) eob = i;
}
}
}
*eob_ptr = eob + 1;
int log_scale) {
av1_quantize_b_c(coeff_ptr, n_coeffs, skip_block, zbin_ptr, round_ptr,
quant_ptr, quant_shift_ptr, qcoeff_ptr, dqcoeff_ptr,
dequant_ptr, eob_ptr, scan, iscan,
#if CONFIG_AOM_QM
qm_ptr, iqm_ptr,
#endif // CONFIG_AOM_QM
log_scale);
}
#endif
#endif // CONFIG_HIGHBITDEPTH
static void invert_quant(int16_t *quant, int16_t *shift, int d) {
uint32_t t;