static void mdp_calc_scaleInitPhase_3p1(uint32 in_w,
uint32 in_h,
uint32 out_w,
uint32 out_h,
boolean is_rotate,
boolean is_pp_x,
boolean is_pp_y, struct phase_val *pval)
{
uint64 dst_ROI_width;
uint64 dst_ROI_height;
uint64 src_ROI_width;
uint64 src_ROI_height;
/*
* phase_step_x, phase_step_y, phase_init_x and phase_init_y
* are represented in fixed-point, unsigned 3.29 format
*/
uint32 phase_step_x = 0;
uint32 phase_step_y = 0;
uint32 phase_init_x = 0;
uint32 phase_init_y = 0;
uint32 yscale_filter_sel, xscale_filter_sel;
uint32 scale_unit_sel_x, scale_unit_sel_y;
uint64 numerator, denominator;
uint64 temp_dim;
src_ROI_width = in_w;
src_ROI_height = in_h;
dst_ROI_width = out_w;
dst_ROI_height = out_h;
/* if there is a 90 degree rotation */
if (is_rotate) {
/* decide whether to use FIR or M/N for scaling */
/* if down-scaling by a factor smaller than 1/4 */
if ((dst_ROI_height == 1 && src_ROI_width < 4) ||
(src_ROI_width < 4 * dst_ROI_height - 3))
scale_unit_sel_x = 0;/* use FIR scalar */
else
scale_unit_sel_x = 1;/* use M/N scalar */
/* if down-scaling by a factor smaller than 1/4 */
if ((dst_ROI_width == 1 && src_ROI_height < 4) ||
(src_ROI_height < 4 * dst_ROI_width - 3))
scale_unit_sel_y = 0;/* use FIR scalar */
else
scale_unit_sel_y = 1;/* use M/N scalar */
} else {
/* decide whether to use FIR or M/N for scaling */
if ((dst_ROI_width == 1 && src_ROI_width < 4) ||
(src_ROI_width < 4 * dst_ROI_width - 3))
scale_unit_sel_x = 0;/* use FIR scalar */
else
scale_unit_sel_x = 1;/* use M/N scalar */
if ((dst_ROI_height == 1 && src_ROI_height < 4) ||
(src_ROI_height < 4 * dst_ROI_height - 3))
scale_unit_sel_y = 0;/* use FIR scalar */
else
scale_unit_sel_y = 1;/* use M/N scalar */
}
/* if there is a 90 degree rotation */
if (is_rotate) {
/* swap the width and height of dst ROI */
temp_dim = dst_ROI_width;
dst_ROI_width = dst_ROI_height;
dst_ROI_height = temp_dim;
}
/* calculate phase step for the x direction */
/* if destination is only 1 pixel wide, the value of phase_step_x
is unimportant. Assigning phase_step_x to src ROI width
as an arbitrary value. */
if (dst_ROI_width == 1)
phase_step_x = (uint32) ((src_ROI_width) << SCALER_PHASE_BITS);
/* if using FIR scalar */
else if (scale_unit_sel_x == 0) {
/* Calculate the quotient ( src_ROI_width - 1 ) / ( dst_ROI_width - 1)
with u3.29 precision. Quotient is rounded up to the larger
29th decimal point. */
numerator = (src_ROI_width - 1) << SCALER_PHASE_BITS;
denominator = (dst_ROI_width - 1); /* never equals to 0 because of the "( dst_ROI_width == 1 ) case" */
phase_step_x = (uint32) mdp_do_div((numerator + denominator - 1), denominator); /* divide and round up to the larger 29th decimal point. */
}
/* if M/N scalar */
else if (scale_unit_sel_x == 1) {
/* Calculate the quotient ( src_ROI_width ) / ( dst_ROI_width)
with u3.29 precision. Quotient is rounded down to the
smaller 29th decimal point. */
numerator = (src_ROI_width) << SCALER_PHASE_BITS;
denominator = (dst_ROI_width);
phase_step_x = (uint32) mdp_do_div(numerator, denominator);
}
/* calculate phase step for the y direction */
/* if destination is only 1 pixel wide, the value of
phase_step_x is unimportant. Assigning phase_step_x
to src ROI width as an arbitrary value. */
if (dst_ROI_height == 1)
phase_step_y = (uint32) ((src_ROI_height) << SCALER_PHASE_BITS);
/* if FIR scalar */
else if (scale_unit_sel_y == 0) {
/* Calculate the quotient ( src_ROI_height - 1 ) / ( dst_ROI_height - 1)
with u3.29 precision. Quotient is rounded up to the larger
29th decimal point. */
numerator = (src_ROI_height - 1) << SCALER_PHASE_BITS;
denominator = (dst_ROI_height - 1); /* never equals to 0 because of the "( dst_ROI_height == 1 )" case */
phase_step_y = (uint32) mdp_do_div((numerator + denominator - 1), denominator); /* Quotient is rounded up to the larger 29th decimal point. */
}
/* if M/N scalar */
else if (scale_unit_sel_y == 1) {
/* Calculate the quotient ( src_ROI_height ) / ( dst_ROI_height)
with u3.29 precision. Quotient is rounded down to the smaller
29th decimal point. */
numerator = (src_ROI_height) << SCALER_PHASE_BITS;
denominator = (dst_ROI_height);
phase_step_y = (uint32) mdp_do_div(numerator, denominator);
}
/* decide which set of FIR coefficients to use */
if (phase_step_x > HAL_MDP_PHASE_STEP_2P50)
xscale_filter_sel = 0;
else if (phase_step_x > HAL_MDP_PHASE_STEP_1P66)
xscale_filter_sel = 1;
else if (phase_step_x > HAL_MDP_PHASE_STEP_1P25)
xscale_filter_sel = 2;
else
xscale_filter_sel = 3;
if (phase_step_y > HAL_MDP_PHASE_STEP_2P50)
yscale_filter_sel = 0;
else if (phase_step_y > HAL_MDP_PHASE_STEP_1P66)
yscale_filter_sel = 1;
else if (phase_step_y > HAL_MDP_PHASE_STEP_1P25)
yscale_filter_sel = 2;
else
yscale_filter_sel = 3;
/* calculate phase init for the x direction */
/* if using FIR scalar */
if (scale_unit_sel_x == 0) {
if (dst_ROI_width == 1)
phase_init_x =
(uint32) ((src_ROI_width - 1) << SCALER_PHASE_BITS);
else
phase_init_x = 0;
}
/* M over N scalar */
else if (scale_unit_sel_x == 1)
phase_init_x = 0;
/* calculate phase init for the y direction
if using FIR scalar */
if (scale_unit_sel_y == 0) {
if (dst_ROI_height == 1)
phase_init_y =
(uint32) ((src_ROI_height -
1) << SCALER_PHASE_BITS);
else
phase_init_y = 0;
}
/* M over N scalar */
else if (scale_unit_sel_y == 1)
phase_init_y = 0;
/* write registers */
pval->phase_step_x = (uint32) phase_step_x;
pval->phase_step_y = (uint32) phase_step_y;
pval->phase_init_x = (uint32) phase_init_x;
pval->phase_init_y = (uint32) phase_init_y;
return;
}
static void mdp_calc_scaleInitPhase_3p1(uint32 in_w,
uint32 in_h,
uint32 out_w,
uint32 out_h,
boolean is_rotate,
boolean is_pp_x,
boolean is_pp_y, struct phase_val *pval)
{
uint64 dst_ROI_width;
uint64 dst_ROI_height;
uint64 src_ROI_width;
uint64 src_ROI_height;
/*
*/
uint32 phase_step_x = 0;
uint32 phase_step_y = 0;
uint32 phase_init_x = 0;
uint32 phase_init_y = 0;
uint32 yscale_filter_sel, xscale_filter_sel;
uint32 scale_unit_sel_x, scale_unit_sel_y;
uint64 numerator, denominator;
uint64 temp_dim;
src_ROI_width = in_w;
src_ROI_height = in_h;
dst_ROI_width = out_w;
dst_ROI_height = out_h;
/* */
if (is_rotate) {
/* */
/* */
if ((dst_ROI_height == 1 && src_ROI_width < 4) ||
(src_ROI_width < 4 * dst_ROI_height - 3))
scale_unit_sel_x = 0;/* */
else
scale_unit_sel_x = 1;/* */
/* */
if ((dst_ROI_width == 1 && src_ROI_height < 4) ||
(src_ROI_height < 4 * dst_ROI_width - 3))
scale_unit_sel_y = 0;/* */
else
scale_unit_sel_y = 1;/* */
} else {
/* */
if ((dst_ROI_width == 1 && src_ROI_width < 4) ||
(src_ROI_width < 4 * dst_ROI_width - 3))
scale_unit_sel_x = 0;/* */
else
scale_unit_sel_x = 1;/* */
if ((dst_ROI_height == 1 && src_ROI_height < 4) ||
(src_ROI_height < 4 * dst_ROI_height - 3))
scale_unit_sel_y = 0;/* */
else
scale_unit_sel_y = 1;/* */
}
/* */
if (is_rotate) {
/* */
temp_dim = dst_ROI_width;
dst_ROI_width = dst_ROI_height;
dst_ROI_height = temp_dim;
}
/* */
/*
*/
if (dst_ROI_width == 1)
phase_step_x = (uint32) ((src_ROI_width) << SCALER_PHASE_BITS);
/* */
else if (scale_unit_sel_x == 0) {
/*
*/
numerator = (src_ROI_width - 1) << SCALER_PHASE_BITS;
denominator = (dst_ROI_width - 1); /* */
phase_step_x = (uint32) mdp_do_div((numerator + denominator - 1), denominator); /* */
}
/* */
else if (scale_unit_sel_x == 1) {
/*
*/
numerator = (src_ROI_width) << SCALER_PHASE_BITS;
denominator = (dst_ROI_width);
phase_step_x = (uint32) mdp_do_div(numerator, denominator);
}
/* */
/*
*/
if (dst_ROI_height == 1)
phase_step_y = (uint32) ((src_ROI_height) << SCALER_PHASE_BITS);
/* */
else if (scale_unit_sel_y == 0) {
/*
*/
numerator = (src_ROI_height - 1) << SCALER_PHASE_BITS;
denominator = (dst_ROI_height - 1); /* */
phase_step_y = (uint32) mdp_do_div((numerator + denominator - 1), denominator); /* */
}
/* */
else if (scale_unit_sel_y == 1) {
/*
*/
numerator = (src_ROI_height) << SCALER_PHASE_BITS;
denominator = (dst_ROI_height);
phase_step_y = (uint32) mdp_do_div(numerator, denominator);
}
/* */
if (phase_step_x > HAL_MDP_PHASE_STEP_2P50)
xscale_filter_sel = 0;
else if (phase_step_x > HAL_MDP_PHASE_STEP_1P66)
xscale_filter_sel = 1;
else if (phase_step_x > HAL_MDP_PHASE_STEP_1P25)
xscale_filter_sel = 2;
else
xscale_filter_sel = 3;
if (phase_step_y > HAL_MDP_PHASE_STEP_2P50)
yscale_filter_sel = 0;
else if (phase_step_y > HAL_MDP_PHASE_STEP_1P66)
yscale_filter_sel = 1;
else if (phase_step_y > HAL_MDP_PHASE_STEP_1P25)
yscale_filter_sel = 2;
else
yscale_filter_sel = 3;
/* */
/* */
if (scale_unit_sel_x == 0) {
if (dst_ROI_width == 1)
phase_init_x =
(uint32) ((src_ROI_width - 1) << SCALER_PHASE_BITS);
else
phase_init_x = 0;
}
/* */
else if (scale_unit_sel_x == 1)
phase_init_x = 0;
/*
*/
if (scale_unit_sel_y == 0) {
if (dst_ROI_height == 1)
phase_init_y =
(uint32) ((src_ROI_height -
1) << SCALER_PHASE_BITS);
else
phase_init_y = 0;
}
/* */
else if (scale_unit_sel_y == 1)
phase_init_y = 0;
/* */
pval->phase_step_x = (uint32) phase_step_x;
pval->phase_step_y = (uint32) phase_step_y;
pval->phase_init_x = (uint32) phase_init_x;
pval->phase_init_y = (uint32) phase_init_y;
return;
}