overlay: Add support for rotator downscale
Add support for rotator downscale. This is enabled from 8994 onwards
Constraints:
--Downscale should be a power of 2, max upto 32
--Both directions should have equal downscale
--{src_w, src_h} mod downscale = 0
--No BWC
--No Interlaced video support
The rotator's destination rect is modified to reflect the presence of
downscale. Any downscale calcs should be done only after adjusting
crop to meet rotator's requirements.
Smaller downscale is used if we need to chop off any more than 1
line or pixel.
Change-Id: Id07d62fefa3213035f16cca49497800716484a95
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 3696c05..a58eec4 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -1633,6 +1633,47 @@
crop.bottom = transformedCrop.y + transformedCrop.h;
}
+int getRotDownscale(hwc_context_t *ctx, const hwc_layer_1_t *layer) {
+ if(not qdutils::MDPVersion::getInstance().isRotDownscaleEnabled()) {
+ return 0;
+ }
+
+ int downscale = 0;
+ hwc_rect_t crop = integerizeSourceCrop(layer->sourceCropf);
+ hwc_rect_t dst = layer->displayFrame;
+ private_handle_t *hnd = (private_handle_t *)layer->handle;
+
+ if(not hnd) {
+ return 0;
+ }
+
+ MetaData_t *metadata = (MetaData_t *)hnd->base_metadata;
+ bool isInterlaced = metadata && (metadata->operation & PP_PARAM_INTERLACED)
+ && metadata->interlaced;
+ int transform = layer->transform;
+ uint32_t format = ovutils::getMdpFormat(hnd->format, isTileRendered(hnd));
+
+ if(isYuvBuffer(hnd)) {
+ if(ctx->mMDP.version >= qdutils::MDP_V4_2 &&
+ ctx->mMDP.version < qdutils::MDSS_V5) {
+ downscale = Rotator::getDownscaleFactor(crop.right - crop.left,
+ crop.bottom - crop.top, dst.right - dst.left,
+ dst.bottom - dst.top, format, isInterlaced);
+ } else {
+ Dim adjCrop(crop.left, crop.top, crop.right - crop.left,
+ crop.bottom - crop.top);
+ Dim pos(dst.left, dst.top, dst.right - dst.left,
+ dst.bottom - dst.top);
+ if(transform & HAL_TRANSFORM_ROT_90) {
+ swap(adjCrop.w, adjCrop.h);
+ }
+ downscale = Rotator::getDownscaleFactor(adjCrop.w, adjCrop.h, pos.w,
+ pos.h, format, isInterlaced);
+ }
+ }
+ return downscale;
+}
+
int configureNonSplit(hwc_context_t *ctx, hwc_layer_1_t *layer,
const int& dpy, eMdpFlags& mdpFlags, eZorder& z,
eIsFg& isFg, const eDest& dest, Rotator **rot) {
@@ -1654,7 +1695,6 @@
hwc_rect_t dst = layer->displayFrame;
int transform = layer->transform;
eTransform orient = static_cast<eTransform>(transform);
- int downscale = 0;
int rotFlags = ovutils::ROT_FLAGS_NONE;
uint32_t format = ovutils::getMdpFormat(hnd->format, isTileRendered(hnd));
Whf whf(getWidth(hnd), getHeight(hnd), format, (uint32_t)hnd->size);
@@ -1668,36 +1708,24 @@
}
calcExtDisplayPosition(ctx, hnd, dpy, crop, dst, transform, orient);
-
- if(isYuvBuffer(hnd) && ctx->mMDP.version >= qdutils::MDP_V4_2 &&
- ctx->mMDP.version < qdutils::MDSS_V5) {
- downscale = getDownscaleFactor(
- crop.right - crop.left,
- crop.bottom - crop.top,
- dst.right - dst.left,
- dst.bottom - dst.top);
- if(downscale) {
- rotFlags = ROT_DOWNSCALE_ENABLED;
- }
- }
-
+ int downscale = getRotDownscale(ctx, layer);
setMdpFlags(ctx, layer, mdpFlags, downscale, transform);
//if 90 component or downscale, use rot
- if((has90Transform(layer) && isRotationDoable(ctx, hnd)) || downscale) {
+ if((has90Transform(layer) or downscale) and isRotationDoable(ctx, hnd)) {
*rot = ctx->mRotMgr->getNext();
if(*rot == NULL) return -1;
ctx->mLayerRotMap[dpy]->add(layer, *rot);
// BWC is not tested for other formats So enable it only for YUV format
if(!dpy && isYuvBuffer(hnd))
- BwcPM::setBwc(crop, dst, transform, mdpFlags);
+ BwcPM::setBwc(crop, dst, transform, downscale, mdpFlags);
//Configure rotator for pre-rotation
if(configRotator(*rot, whf, crop, mdpFlags, orient, downscale) < 0) {
ALOGE("%s: configRotator failed!", __FUNCTION__);
return -1;
}
updateSource(orient, whf, crop, *rot);
- rotFlags |= ovutils::ROT_PREROTATED;
+ rotFlags |= ROT_PREROTATED;
}
//For the mdp, since either we are pre-rotating or MDP does flips
@@ -1761,7 +1789,6 @@
hwc_rect_t dst = layer->displayFrame;
int transform = layer->transform;
eTransform orient = static_cast<eTransform>(transform);
- const int downscale = 0;
int rotFlags = ROT_FLAGS_NONE;
uint32_t format = ovutils::getMdpFormat(hnd->format, isTileRendered(hnd));
Whf whf(getWidth(hnd), getHeight(hnd), format, (uint32_t)hnd->size);
@@ -1777,8 +1804,8 @@
/* Calculate the external display position based on MDP downscale,
ActionSafe, and extorientation features. */
calcExtDisplayPosition(ctx, hnd, dpy, crop, dst, transform, orient);
-
- setMdpFlags(ctx, layer, mdpFlagsL, 0, transform);
+ int downscale = getRotDownscale(ctx, layer);
+ setMdpFlags(ctx, layer, mdpFlagsL, downscale, transform);
if(lDest != OV_INVALID && rDest != OV_INVALID) {
//Enable overfetch
@@ -1792,7 +1819,7 @@
whf.format = wb->getOutputFormat();
}
- if(has90Transform(layer) && isRotationDoable(ctx, hnd)) {
+ if((has90Transform(layer) or downscale) and isRotationDoable(ctx, hnd)) {
(*rot) = ctx->mRotMgr->getNext();
if((*rot) == NULL) return -1;
ctx->mLayerRotMap[dpy]->add(layer, *rot);
@@ -1928,7 +1955,7 @@
ctx->mLayerRotMap[dpy]->add(layer, *rot);
// BWC is not tested for other formats So enable it only for YUV format
if(!dpy && isYuvBuffer(hnd))
- BwcPM::setBwc(crop, dst, transform, mdpFlagsL);
+ BwcPM::setBwc(crop, dst, transform, downscale, mdpFlagsL);
//Configure rotator for pre-rotation
if(configRotator(*rot, whf, crop, mdpFlagsL, orient, downscale) < 0) {
ALOGE("%s: configRotator failed!", __FUNCTION__);
@@ -2175,9 +2202,12 @@
return (eqBounds == 3);
}
-void BwcPM::setBwc(const hwc_rect_t& crop,
- const hwc_rect_t& dst, const int& transform,
- ovutils::eMdpFlags& mdpFlags) {
+void BwcPM::setBwc(const hwc_rect_t& crop, const hwc_rect_t& dst,
+ const int& transform,const int& downscale,
+ ovutils::eMdpFlags& mdpFlags) {
+ //BWC not supported with rot-downscale
+ if(downscale) return;
+
//Target doesnt support Bwc
qdutils::MDPVersion& mdpHw = qdutils::MDPVersion::getInstance();
if(!mdpHw.supportsBWC()) {