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aom: update libaom to 0ec86ac7ae1e32a7e70410fa4972a655ec3670a4

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This commit is contained in:
Roy Tam 2019-02-22 21:52:01 +08:00
commit eb361970c5
438 changed files with 52661 additions and 21905 deletions
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49
third_party/aom/aom_dsp/bitreader_buffer.c vendored
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@ -14,6 +14,8 @@
#include "config/aom_config.h"
#include "aom_dsp/bitreader_buffer.h"
#include "aom_dsp/recenter.h"
#include "aom_ports/bitops.h"
size_t aom_rb_bytes_read(const struct aom_read_bit_buffer *rb) {
return (rb->bit_offset + 7) >> 3;
@ -65,3 +67,50 @@ uint32_t aom_rb_read_uvlc(struct aom_read_bit_buffer *rb) {
const uint32_t value = aom_rb_read_literal(rb, leading_zeros);
return base + value;
}
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;
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);
}
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;
while (1) {
int b = (i ? k + i - 1 : k);
int a = (1 << b);
if (n <= mk + 3 * a) {
return aom_rb_read_primitive_quniform(rb, n - mk) + mk;
}
if (!aom_rb_read_bit(rb)) {
return aom_rb_read_literal(rb, b) + mk;
}
i = i + 1;
mk += a;
}
assert(0);
return 0;
}
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));
}
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;
}