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Update aom to commit id e87fb2378f01103d5d6e477a4ef6892dc714e614

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trav90 2018-10-18 21:53:44 -05:00 • committed by Roy Tam
commit 992c6637e3
429 changed files with 76047 additions and 40937 deletions
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49
third_party/aom/aom_dsp/binary_codes_reader.c vendored
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@ -53,6 +53,15 @@ uint16_t aom_read_primitive_quniform_(aom_reader *r,
return v < m ? v : (v << 1) - m + aom_read_bit(r, ACCT_STR_NAME);
}
static uint16_t aom_rb_read_primitive_quniform(struct aom_read_bit_buffer *rb,
uint16_t n) {
if (n <= 1) return 0;
const int l = get_msb(n - 1) + 1;
const int m = (1 << l) - n;
const int v = aom_rb_read_literal(rb, l - 1);
return v < m ? v : (v << 1) - m + aom_rb_read_bit(rb);
}
uint16_t aom_read_primitive_refbilevel_(aom_reader *r, uint16_t n, uint16_t p,
uint16_t ref ACCT_STR_PARAM) {
if (n <= 1) return 0;
@ -101,15 +110,42 @@ uint16_t aom_read_primitive_subexpfin_(aom_reader *r, uint16_t n,
return v;
}
// Decode finite subexponential code that for a symbol v in [0, n-1] with
// parameter k
// based on a reference ref also in [0, n-1].
static uint16_t aom_rb_read_primitive_subexpfin(struct aom_read_bit_buffer *rb,
uint16_t n, uint16_t k) {
int i = 0;
int mk = 0;
uint16_t v;
while (1) {
int b = (i ? k + i - 1 : k);
int a = (1 << b);
if (n <= mk + 3 * a) {
v = aom_rb_read_primitive_quniform(rb, n - mk) + mk;
break;
} else {
if (aom_rb_read_bit(rb)) {
i = i + 1;
mk += a;
} else {
v = aom_rb_read_literal(rb, b) + mk;
break;
}
}
}
return v;
}
uint16_t aom_read_primitive_refsubexpfin_(aom_reader *r, uint16_t n, uint16_t k,
uint16_t ref ACCT_STR_PARAM) {
return inv_recenter_finite_nonneg(
n, ref, aom_read_primitive_subexpfin(r, n, k, ACCT_STR_NAME));
}
static uint16_t aom_rb_read_primitive_refsubexpfin(
struct aom_read_bit_buffer *rb, uint16_t n, uint16_t k, uint16_t ref) {
return inv_recenter_finite_nonneg(n, ref,
aom_rb_read_primitive_subexpfin(rb, n, k));
}
// Decode finite subexponential code that for a symbol v in [-(n-1), n-1] with
// parameter k based on a reference ref also in [-(n-1), n-1].
int16_t aom_read_signed_primitive_refsubexpfin_(aom_reader *r, uint16_t n,
@ -120,3 +156,10 @@ int16_t aom_read_signed_primitive_refsubexpfin_(aom_reader *r, uint16_t n,
return aom_read_primitive_refsubexpfin(r, scaled_n, k, ref, ACCT_STR_NAME) -
n + 1;
}
int16_t aom_rb_read_signed_primitive_refsubexpfin(
struct aom_read_bit_buffer *rb, uint16_t n, uint16_t k, int16_t ref) {
ref += n - 1;
const uint16_t scaled_n = (n << 1) - 1;
return aom_rb_read_primitive_refsubexpfin(rb, scaled_n, k, ref) - n + 1;
}