generic-library/vpx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Move vp8_strict_quantize_b inside EXACT_QUANT #define.

Browse Source 
There is currently no inexact version of this function, so do not
 even compile it without EXACT_QUANT.
This will prevent someone from inadvertently trying to use it without
 the proper EXACT_QUANT setup.

Change-Id: Ia13491e0128afb281c05c9222ee5987101e4010d
This commit is contained in:
Timothy B. Terriberry
2010-10-11 13:49:52 -07:00
parent dd08db9315
commit 82c4339885
1 changed files with 59 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

117
vp8/encoder/quantize.c
View File

@@ -118,6 +118,65 @@ void vp8_regular_quantize_b(BLOCK *b, BLOCKD *d)
d->eob = eob + 1; d->eob = eob + 1;
} }
/* Perform regular quantization, with unbiased rounding and no zero bin. */
void vp8_strict_quantize_b(BLOCK *b, BLOCKD *d)
{
int i;
int rc;
int eob;
int x;
int y;
int z;
int sz;
short *coeff_ptr;
short *quant_ptr;
short *quant_shift_ptr;
short *qcoeff_ptr;
short *dqcoeff_ptr;
short *dequant_ptr;
coeff_ptr = &b->coeff[0];
quant_ptr = &b->quant[0][0];
quant_shift_ptr = &b->quant_shift[0][0];
qcoeff_ptr = d->qcoeff;
dqcoeff_ptr = d->dqcoeff;
dequant_ptr = &d->dequant[0][0];
eob = - 1;
vpx_memset(qcoeff_ptr, 0, 32);
vpx_memset(dqcoeff_ptr, 0, 32);
for (i = 0; i < 16; i++)
{
int dq;
int round;
/*TODO: These arrays should be stored in zig-zag order.*/
rc = vp8_default_zig_zag1d[i];
z = coeff_ptr[rc];
dq = dequant_ptr[rc];
round = dq >> 1;
/* Sign of z. */
sz = -(z < 0);
x = (z + sz) ^ sz;
x += round;
if (x >= dq)
{
/* Quantize x. */
y = (((x * quant_ptr[rc]) >> 16) + x) >> quant_shift_ptr[rc];
/* Put the sign back. */
x = (y + sz) ^ sz;
/* Save the coefficient and its dequantized value. */
qcoeff_ptr[rc] = x;
dqcoeff_ptr[rc] = x * dq;
/* Remember the last non-zero coefficient. */
if (y)
eob = i;
}
}
d->eob = eob + 1;
}
#else #else
void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d) void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d)
{ {
@@ -207,64 +266,6 @@ void vp8_regular_quantize_b(BLOCK *b, BLOCKD *d)
#endif #endif
/* Perform regular quantization, with unbiased rounding and no zero bin. */
void vp8_strict_quantize_b(BLOCK *b, BLOCKD *d)
{
int i;
int rc;
int eob;
int x;
int y;
int z;
int sz;
short *coeff_ptr;
short *quant_ptr;
short *quant_shift_ptr;
short *qcoeff_ptr;
short *dqcoeff_ptr;
short *dequant_ptr;
coeff_ptr = &b->coeff[0];
quant_ptr = &b->quant[0][0];
quant_shift_ptr = &b->quant_shift[0][0];
qcoeff_ptr = d->qcoeff;
dqcoeff_ptr = d->dqcoeff;
dequant_ptr = &d->dequant[0][0];
eob = - 1;
vpx_memset(qcoeff_ptr, 0, 32);
vpx_memset(dqcoeff_ptr, 0, 32);
for (i = 0; i < 16; i++)
{
int dq;
int round;
/*TODO: These arrays should be stored in zig-zag order.*/
rc = vp8_default_zig_zag1d[i];
z = coeff_ptr[rc];
dq = dequant_ptr[rc];
round = dq >> 1;
/* Sign of z. */
sz = -(z < 0);
x = (z + sz) ^ sz;
x += round;
if (x >= dq)
{
/* Quantize x. */
y = (((x * quant_ptr[rc]) >> 16) + x) >> quant_shift_ptr[rc];
/* Put the sign back. */
x = (y + sz) ^ sz;
/* Save the coefficient and its dequantized value. */
qcoeff_ptr[rc] = x;
dqcoeff_ptr[rc] = x * dq;
/* Remember the last non-zero coefficient. */
if (y)
eob = i;
}
}
d->eob = eob + 1;
}
void vp8_quantize_mby(MACROBLOCK *x) void vp8_quantize_mby(MACROBLOCK *x)
{ {
int i; int i;