LineageOS/android_vendor_qcom_opensource_display-commonsys-intf
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overlay: Support for returning pipe based on capability

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Add support for returning pipes based on capabilities.
getPipe() API takes in pipe specifications like format class,
scaling, display, mixer, fb and decides what pipe to return.
The nextPipe() API is now just a private helper.

Change-Id: I0ab809662c0ad6297e19a44f39264ee929944d13
This commit is contained in:
Saurabh Shah
2014-03-05 14:28:26 -08:00
committed by Gerrit - the friendly Code Review server
parent 8118d4b5b9
commit c62f39861a
6 changed files with 207 additions and 120 deletions
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99
liboverlay/overlay.cpp
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@@ -42,7 +42,7 @@ using namespace scale;
namespace overlay {
using namespace utils;
using namespace qdutils;
Overlay::Overlay() {
int numPipes = qdutils::MDPVersion::getInstance().getTotalPipes();
@@ -158,6 +158,103 @@ eDest Overlay::nextPipe(eMdpPipeType type, int dpy, int mixer) {
return dest;
}
utils::eDest Overlay::getPipe(const PipeSpecs& pipeSpecs) {
if(MDPVersion::getInstance().is8x26()) {
return getPipe_8x26(pipeSpecs);
} else if(MDPVersion::getInstance().is8x16()) {
return getPipe_8x16(pipeSpecs);
}
eDest dest = OV_INVALID;
//The default behavior is to assume RGB and VG pipes have scalars
if(pipeSpecs.formatClass == FORMAT_YUV) {
return nextPipe(OV_MDP_PIPE_VG, pipeSpecs.dpy, pipeSpecs.mixer);
} else if(pipeSpecs.fb == false) { //RGB App layers
if(not pipeSpecs.needsScaling) {
dest = nextPipe(OV_MDP_PIPE_DMA, pipeSpecs.dpy, pipeSpecs.mixer);
}
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_RGB, pipeSpecs.dpy, pipeSpecs.mixer);
}
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_VG, pipeSpecs.dpy, pipeSpecs.mixer);
}
} else { //FB layer
dest = nextPipe(OV_MDP_PIPE_RGB, pipeSpecs.dpy, pipeSpecs.mixer);
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_VG, pipeSpecs.dpy, pipeSpecs.mixer);
}
//Some features can cause FB to have scaling as well.
//If we ever come to this block with FB needing scaling,
//the screen will be black for a frame, since the FB won't get a pipe
//but atleast this will prevent a hang
if(dest == OV_INVALID and (not pipeSpecs.needsScaling)) {
dest = nextPipe(OV_MDP_PIPE_DMA, pipeSpecs.dpy, pipeSpecs.mixer);
}
}
return dest;
}
utils::eDest Overlay::getPipe_8x26(const PipeSpecs& pipeSpecs) {
//Use this to hide all the 8x26 requirements that cannot be humanly
//described in a generic way
eDest dest = OV_INVALID;
if(pipeSpecs.formatClass == FORMAT_YUV) { //video
return nextPipe(OV_MDP_PIPE_VG, pipeSpecs.dpy, pipeSpecs.mixer);
} else if(pipeSpecs.fb == false) { //RGB app layers
if(not pipeSpecs.needsScaling) {
dest = nextPipe(OV_MDP_PIPE_DMA, pipeSpecs.dpy, pipeSpecs.mixer);
}
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_RGB, pipeSpecs.dpy, pipeSpecs.mixer);
}
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_VG, pipeSpecs.dpy, pipeSpecs.mixer);
}
} else { //FB layer
//For 8x26 Secondary we use DMA always for FB for inline rotation
if(pipeSpecs.dpy == DPY_PRIMARY) {
dest = nextPipe(OV_MDP_PIPE_RGB, pipeSpecs.dpy, pipeSpecs.mixer);
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_VG, pipeSpecs.dpy, pipeSpecs.mixer);
}
}
if(dest == OV_INVALID and (not pipeSpecs.needsScaling)) {
dest = nextPipe(OV_MDP_PIPE_DMA, pipeSpecs.dpy, pipeSpecs.mixer);
}
}
return dest;
}
utils::eDest Overlay::getPipe_8x16(const PipeSpecs& pipeSpecs) {
//Having such functions help keeping the interface generic but code specific
//and rife with assumptions
eDest dest = OV_INVALID;
if(pipeSpecs.formatClass == FORMAT_YUV or pipeSpecs.needsScaling) {
return nextPipe(OV_MDP_PIPE_VG, pipeSpecs.dpy, pipeSpecs.mixer);
} else if(pipeSpecs.fb == false) { //RGB app layers
//Since this is a specific func, we can assume stuff like RGB pipe not
//having scalar blocks
dest = nextPipe(OV_MDP_PIPE_RGB, pipeSpecs.dpy, pipeSpecs.mixer);
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_DMA, pipeSpecs.dpy, pipeSpecs.mixer);
}
} else {
//For 8x16 Secondary we use DMA always for FB for inline rotation
if(pipeSpecs.dpy == DPY_PRIMARY) {
dest = nextPipe(OV_MDP_PIPE_RGB, pipeSpecs.dpy, pipeSpecs.mixer);
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_VG, pipeSpecs.dpy, pipeSpecs.mixer);
}
}
if(dest == OV_INVALID) {
dest = nextPipe(OV_MDP_PIPE_DMA, pipeSpecs.dpy, pipeSpecs.mixer);
}
}
return dest;
}
void Overlay::endAllSessions() {
for(int i = 0; i < PipeBook::NUM_PIPES; i++) {
if(mPipeBook[i].valid() && mPipeBook[i].mSession==PipeBook::START)