int vpx_reader_init(vpx_reader *r,
const uint8_t *buffer,
size_t size,
vpx_decrypt_cb decrypt_cb,
void *decrypt_state) {
if (size && !buffer) {
return 1;
} else {
r->buffer_end = buffer + size;
r->buffer = buffer;
r->value = 0;
r->count = -8;
r->range = 255;
r->decrypt_cb = decrypt_cb;
r->decrypt_state = decrypt_state;
vpx_reader_fill(r);
return vpx_read_bit(r) != 0; // marker bit
}
}
static int decode_coefs(const MACROBLOCKD *xd, PLANE_TYPE type,
tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
int ctx, const int16_t *scan, const int16_t *nb,
vpx_reader *r)
#endif
{
FRAME_COUNTS *counts = xd->counts;
const int max_eob = 16 << (tx_size << 1);
const FRAME_CONTEXT *const fc = xd->fc;
const int ref = is_inter_block(&xd->mi[0]->mbmi);
#if CONFIG_AOM_QM
const qm_val_t *iqmatrix = iqm[!ref][tx_size];
#endif
int band, c = 0;
const vpx_prob(*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
fc->coef_probs[tx_size][type][ref];
const vpx_prob *prob;
unsigned int(*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1];
unsigned int(*eob_branch_count)[COEFF_CONTEXTS];
uint8_t token_cache[32 * 32];
const uint8_t *band_translate = get_band_translate(tx_size);
const int dq_shift = (tx_size == TX_32X32);
int v, token;
int16_t dqv = dq[0];
const uint8_t *cat1_prob;
const uint8_t *cat2_prob;
const uint8_t *cat3_prob;
const uint8_t *cat4_prob;
const uint8_t *cat5_prob;
const uint8_t *cat6_prob;
if (counts) {
coef_counts = counts->coef[tx_size][type][ref];
eob_branch_count = counts->eob_branch[tx_size][type][ref];
}
#if CONFIG_VPX_HIGHBITDEPTH
if (xd->bd > VPX_BITS_8) {
if (xd->bd == VPX_BITS_10) {
cat1_prob = vp10_cat1_prob_high10;
cat2_prob = vp10_cat2_prob_high10;
cat3_prob = vp10_cat3_prob_high10;
cat4_prob = vp10_cat4_prob_high10;
cat5_prob = vp10_cat5_prob_high10;
cat6_prob = vp10_cat6_prob_high10;
} else {
cat1_prob = vp10_cat1_prob_high12;
cat2_prob = vp10_cat2_prob_high12;
cat3_prob = vp10_cat3_prob_high12;
cat4_prob = vp10_cat4_prob_high12;
cat5_prob = vp10_cat5_prob_high12;
cat6_prob = vp10_cat6_prob_high12;
}
} else {
cat1_prob = vp10_cat1_prob;
cat2_prob = vp10_cat2_prob;
cat3_prob = vp10_cat3_prob;
cat4_prob = vp10_cat4_prob;
cat5_prob = vp10_cat5_prob;
cat6_prob = vp10_cat6_prob;
}
#else
cat1_prob = vp10_cat1_prob;
cat2_prob = vp10_cat2_prob;
cat3_prob = vp10_cat3_prob;
cat4_prob = vp10_cat4_prob;
cat5_prob = vp10_cat5_prob;
cat6_prob = vp10_cat6_prob;
#endif
while (c < max_eob) {
int val = -1;
band = *band_translate++;
prob = coef_probs[band][ctx];
if (counts) ++eob_branch_count[band][ctx];
if (!vpx_read(r, prob[EOB_CONTEXT_NODE])) {
INCREMENT_COUNT(EOB_MODEL_TOKEN);
break;
}
while (!vpx_read(r, prob[ZERO_CONTEXT_NODE])) {
INCREMENT_COUNT(ZERO_TOKEN);
dqv = dq[1];
token_cache[scan[c]] = 0;
++c;
if (c >= max_eob) return c; // zero tokens at the end (no eob token)
ctx = get_coef_context(nb, token_cache, c);
band = *band_translate++;
prob = coef_probs[band][ctx];
}
if (!vpx_read(r, prob[ONE_CONTEXT_NODE])) {
INCREMENT_COUNT(ONE_TOKEN);
token = ONE_TOKEN;
val = 1;
} else {
INCREMENT_COUNT(TWO_TOKEN);
token = vpx_read_tree(r, vp10_coef_con_tree,
vp10_pareto8_full[prob[PIVOT_NODE] - 1]);
switch (token) {
case TWO_TOKEN:
case THREE_TOKEN:
case FOUR_TOKEN: val = token; break;
case CATEGORY1_TOKEN:
val = CAT1_MIN_VAL + read_coeff(cat1_prob, 1, r);
break;
case CATEGORY2_TOKEN:
val = CAT2_MIN_VAL + read_coeff(cat2_prob, 2, r);
break;
case CATEGORY3_TOKEN:
val = CAT3_MIN_VAL + read_coeff(cat3_prob, 3, r);
break;
case CATEGORY4_TOKEN:
val = CAT4_MIN_VAL + read_coeff(cat4_prob, 4, r);
break;
case CATEGORY5_TOKEN:
val = CAT5_MIN_VAL + read_coeff(cat5_prob, 5, r);
break;
case CATEGORY6_TOKEN: {
#if CONFIG_MISC_FIXES
const int skip_bits = TX_SIZES - 1 - tx_size;
#else
const int skip_bits = 0;
#endif
const uint8_t *cat6p = cat6_prob + skip_bits;
#if CONFIG_VPX_HIGHBITDEPTH
switch (xd->bd) {
case VPX_BITS_8:
val = CAT6_MIN_VAL + read_coeff(cat6p, 14 - skip_bits, r);
break;
case VPX_BITS_10:
val = CAT6_MIN_VAL + read_coeff(cat6p, 16 - skip_bits, r);
break;
case VPX_BITS_12:
val = CAT6_MIN_VAL + read_coeff(cat6p, 18 - skip_bits, r);
break;
default: assert(0); return -1;
}
#else
val = CAT6_MIN_VAL + read_coeff(cat6p, 14 - skip_bits, r);
#endif
break;
}
}
}
#if CONFIG_AOM_QM
dqv = ((iqmatrix[scan[c]] * (int)dqv) + (1 << (AOM_QM_BITS - 1))) >>
AOM_QM_BITS;
#endif
v = (val * dqv) >> dq_shift;
#if CONFIG_COEFFICIENT_RANGE_CHECKING
#if CONFIG_VPX_HIGHBITDEPTH
dqcoeff[scan[c]] = highbd_check_range((vpx_read_bit(r) ? -v : v), xd->bd);
#else
dqcoeff[scan[c]] = check_range(vpx_read_bit(r) ? -v : v);
#endif // CONFIG_VPX_HIGHBITDEPTH
#else
dqcoeff[scan[c]] = vpx_read_bit(r) ? -v : v;
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
token_cache[scan[c]] = vp10_pt_energy_class[token];
++c;
ctx = get_coef_context(nb, token_cache, c);
dqv = dq[1];
}
return c;
}
static int decode_coefs(const MACROBLOCKD *xd, PLANE_TYPE type,
tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
int ctx, const int16_t *scan, const int16_t *nb,
vpx_reader *r) {
FRAME_COUNTS *counts = xd->counts;
const int max_eob = 16 << (tx_size << 1);
const FRAME_CONTEXT *const fc = xd->fc;
const int ref = is_inter_block(xd->mi[0]);
int band, c = 0;
const vpx_prob(*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
fc->coef_probs[tx_size][type][ref];
const vpx_prob *prob;
unsigned int(*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1];
unsigned int(*eob_branch_count)[COEFF_CONTEXTS];
uint8_t token_cache[32 * 32];
const uint8_t *band_translate = get_band_translate(tx_size);
const int dq_shift = (tx_size == TX_32X32);
int v, token;
int16_t dqv = dq[0];
const uint8_t *const cat6_prob =
#if CONFIG_VP9_HIGHBITDEPTH
(xd->bd == VPX_BITS_12)
? vp9_cat6_prob_high12
: (xd->bd == VPX_BITS_10) ? vp9_cat6_prob_high12 + 2 :
#endif // CONFIG_VP9_HIGHBITDEPTH
vp9_cat6_prob;
const int cat6_bits =
#if CONFIG_VP9_HIGHBITDEPTH
(xd->bd == VPX_BITS_12) ? 18 : (xd->bd == VPX_BITS_10) ? 16 :
#endif // CONFIG_VP9_HIGHBITDEPTH
14;
if (counts) {
coef_counts = counts->coef[tx_size][type][ref];
eob_branch_count = counts->eob_branch[tx_size][type][ref];
}
while (c < max_eob) {
int val = -1;
band = *band_translate++;
prob = coef_probs[band][ctx];
if (counts) ++eob_branch_count[band][ctx];
if (!vpx_read(r, prob[EOB_CONTEXT_NODE])) {
INCREMENT_COUNT(EOB_MODEL_TOKEN);
break;
}
while (!vpx_read(r, prob[ZERO_CONTEXT_NODE])) {
INCREMENT_COUNT(ZERO_TOKEN);
dqv = dq[1];
token_cache[scan[c]] = 0;
++c;
if (c >= max_eob) return c; // zero tokens at the end (no eob token)
ctx = get_coef_context(nb, token_cache, c);
band = *band_translate++;
prob = coef_probs[band][ctx];
}
if (!vpx_read(r, prob[ONE_CONTEXT_NODE])) {
INCREMENT_COUNT(ONE_TOKEN);
token = ONE_TOKEN;
val = 1;
} else {
INCREMENT_COUNT(TWO_TOKEN);
token = vpx_read_tree(r, vp9_coef_con_tree,
vp9_pareto8_full[prob[PIVOT_NODE] - 1]);
switch (token) {
case TWO_TOKEN:
case THREE_TOKEN:
case FOUR_TOKEN: val = token; break;
case CATEGORY1_TOKEN:
val = CAT1_MIN_VAL + read_coeff(vp9_cat1_prob, 1, r);
break;
case CATEGORY2_TOKEN:
val = CAT2_MIN_VAL + read_coeff(vp9_cat2_prob, 2, r);
break;
case CATEGORY3_TOKEN:
val = CAT3_MIN_VAL + read_coeff(vp9_cat3_prob, 3, r);
break;
case CATEGORY4_TOKEN:
val = CAT4_MIN_VAL + read_coeff(vp9_cat4_prob, 4, r);
break;
case CATEGORY5_TOKEN:
val = CAT5_MIN_VAL + read_coeff(vp9_cat5_prob, 5, r);
break;
case CATEGORY6_TOKEN:
val = CAT6_MIN_VAL + read_coeff(cat6_prob, cat6_bits, r);
break;
}
}
v = (val * dqv) >> dq_shift;
#if CONFIG_COEFFICIENT_RANGE_CHECKING
#if CONFIG_VP9_HIGHBITDEPTH
dqcoeff[scan[c]] = highbd_check_range((vpx_read_bit(r) ? -v : v), xd->bd);
#else
dqcoeff[scan[c]] = check_range(vpx_read_bit(r) ? -v : v);
#endif // CONFIG_VP9_HIGHBITDEPTH
#else
dqcoeff[scan[c]] = vpx_read_bit(r) ? -v : v;
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
token_cache[scan[c]] = vp9_pt_energy_class[token];
++c;
ctx = get_coef_context(nb, token_cache, c);
dqv = dq[1];
}
return c;
}
