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android_hardware_qcom_display/libhwcomposer/hwc_pip.cpp
Prashant Surana cc5cb1781c Add support for PIP, picture in picture feature 
Add a new state and required implementation in new overlay to support playback
of two videos using overlay.
Add a new class VideoPIP to handle the pip feature.

Change-Id: Ibce7044bc1216cba77bd952e191aed5472ed6737
2012-09-12 23:07:49 -05:00

332 lines
11 KiB
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/*
* Copyright (C) 2010 The Android Open Source Project
* Copyright (C) 2012, Code Aurora Forum. All rights reserved.
* Not a Contribution, Apache license notifications and license are retained
* for attribution purposes only.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define VIDEOPIP_DEBUG 0
#include <overlay.h>
#include "hwc_qbuf.h"
#include "hwc_external.h"
#include "hwc_pip.h"
namespace qhwc {
#define FINAL_TRANSFORM_MASK 0x000F
//Static Members
ovutils::eOverlayState VideoPIP::sState = ovutils::OV_CLOSED;
int VideoPIP::sYuvCount = 0;
int VideoPIP::sYuvLayerIndex = -1;
bool VideoPIP::sIsYuvLayerSkip = false;
int VideoPIP::sPIPLayerIndex = -1;
bool VideoPIP::sIsModeOn = false;
//Cache stats, figure out the state, config overlay
bool VideoPIP::prepare(hwc_context_t *ctx, hwc_layer_list_t *list) {
sIsModeOn = false;
if(!ctx->mMDP.hasOverlay) {
ALOGD_IF(VIDEOPIP_DEBUG,"%s, this hw doesnt support overlay", __FUNCTION__);
return false;
}
if(sYuvLayerIndex == -1 || sPIPLayerIndex == -1) {
return false;
}
chooseState(ctx);
//if the state chosen above is CLOSED, skip this block.
if(sState != ovutils::OV_CLOSED) {
hwc_layer_t *yuvLayer = &list->hwLayers[sYuvLayerIndex];
hwc_layer_t *pipLayer = NULL;
if(sPIPLayerIndex != -1) {
pipLayer = &list->hwLayers[sPIPLayerIndex];
}
if(configure(ctx, yuvLayer, pipLayer)) {
markFlags(&list->hwLayers[sYuvLayerIndex]);
if(sPIPLayerIndex != -1) {
//Mark PIP layer as HWC_OVERLAY
markFlags(&list->hwLayers[sPIPLayerIndex]);
}
sIsModeOn = true;
}
}
ALOGD_IF(VIDEOPIP_DEBUG, "%s: stats: yuvCount = %d, yuvIndex = %d,"
"IsYuvLayerSkip = %d, pipLayerIndex = %d, IsModeOn = %d",
__FUNCTION__, sYuvCount, sYuvLayerIndex,
sIsYuvLayerSkip, sPIPLayerIndex, sIsModeOn);
return sIsModeOn;
}
void VideoPIP::chooseState(hwc_context_t *ctx) {
ALOGD_IF(VIDEOPIP_DEBUG, "%s: old state = %s", __FUNCTION__,
ovutils::getStateString(sState));
ovutils::eOverlayState newState = ovutils::OV_CLOSED;
//Support 1 video layer
if(sYuvCount == 2 && !ctx->mExtDisplay->getExternalDisplay()) {
/* PIP: Picture in picture
If HDMI is not connected as secondary and there are two videos
we can use two VG pipes for video playback. */
newState = ovutils::OV_2D_PIP_VIDEO_ON_PANEL;
}
sState = newState;
ALOGD_IF(VIDEOPIP_DEBUG, "%s: new chosen state = %s", __FUNCTION__,
ovutils::getStateString(sState));
}
void VideoPIP::markFlags(hwc_layer_t *layer) {
switch(sState) {
case ovutils::OV_2D_PIP_VIDEO_ON_PANEL:
layer->compositionType = HWC_OVERLAY;
break;
default:
break;
}
}
/* Helpers */
bool configPrimaryVideo(hwc_context_t *ctx, hwc_layer_t *layer) {
overlay::Overlay& ov = *(ctx->mOverlay);
private_handle_t *hnd = (private_handle_t *)layer->handle;
ovutils::Whf info(hnd->width, hnd->height, hnd->format, hnd->size);
ovutils::eMdpFlags mdpFlags = ovutils::OV_MDP_FLAGS_NONE;
if (hnd->flags & private_handle_t::PRIV_FLAGS_SECURE_BUFFER) {
ovutils::setMdpFlags(mdpFlags,
ovutils::OV_MDP_SECURE_OVERLAY_SESSION);
}
ovutils::eIsFg isFgFlag = ovutils::IS_FG_OFF;
if (ctx->numHwLayers == 1) {
isFgFlag = ovutils::IS_FG_SET;
}
ovutils::PipeArgs parg(mdpFlags,
info,
ovutils::ZORDER_0,
isFgFlag,
ovutils::ROT_FLAG_DISABLED);
ovutils::PipeArgs pargs[ovutils::MAX_PIPES] = { parg, parg, parg };
ov.setSource(pargs, ovutils::OV_PIPE0);
hwc_rect_t sourceCrop = layer->sourceCrop;
// x,y,w,h
ovutils::Dim dcrop(sourceCrop.left, sourceCrop.top,
sourceCrop.right - sourceCrop.left,
sourceCrop.bottom - sourceCrop.top);
ovutils::Dim dpos;
hwc_rect_t displayFrame = layer->displayFrame;
dpos.x = displayFrame.left;
dpos.y = displayFrame.top;
dpos.w = (displayFrame.right - displayFrame.left);
dpos.h = (displayFrame.bottom - displayFrame.top);
//Calculate the rect for primary based on whether the supplied position
//is within or outside bounds.
const int fbWidth =
ovutils::FrameBufferInfo::getInstance()->getWidth();
const int fbHeight =
ovutils::FrameBufferInfo::getInstance()->getHeight();
if( displayFrame.left < 0 ||
displayFrame.top < 0 ||
displayFrame.right > fbWidth ||
displayFrame.bottom > fbHeight) {
calculate_crop_rects(sourceCrop, displayFrame, fbWidth, fbHeight);
//Update calculated width and height
dcrop.w = sourceCrop.right - sourceCrop.left;
dcrop.h = sourceCrop.bottom - sourceCrop.top;
dpos.x = displayFrame.left;
dpos.y = displayFrame.top;
dpos.w = displayFrame.right - displayFrame.left;
dpos.h = displayFrame.bottom - displayFrame.top;
}
//Only for Primary
ov.setCrop(dcrop, ovutils::OV_PIPE0);
int transform = layer->transform & FINAL_TRANSFORM_MASK;
ovutils::eTransform orient =
static_cast<ovutils::eTransform>(transform);
ov.setTransform(orient, ovutils::OV_PIPE0);
ov.setPosition(dpos, ovutils::OV_PIPE0);
if (!ov.commit(ovutils::OV_PIPE0)) {
ALOGE("%s: commit fails", __FUNCTION__);
return false;
}
return true;
}
// Configure the second video in pip scenario
bool configPIPVideo(hwc_context_t *ctx, hwc_layer_t *layer) {
overlay::Overlay& ov = *(ctx->mOverlay);
private_handle_t *hnd = (private_handle_t *)layer->handle;
ovutils::Whf info(hnd->width, hnd->height, hnd->format, hnd->size);
ovutils::eMdpFlags mdpFlags = ovutils::OV_MDP_FLAGS_NONE;
if (hnd->flags & private_handle_t::PRIV_FLAGS_SECURE_BUFFER) {
ovutils::setMdpFlags(mdpFlags,
ovutils::OV_MDP_SECURE_OVERLAY_SESSION);
}
ovutils::eIsFg isFgFlag = ovutils::IS_FG_OFF;
//Set z-order 1 since this video is on top of the
//primary video
ovutils::PipeArgs parg(mdpFlags,
info,
ovutils::ZORDER_1,
isFgFlag,
ovutils::ROT_FLAG_DISABLED);
ovutils::PipeArgs pargs[ovutils::MAX_PIPES] = { parg, parg, parg };
// Use pipe 1, pipe 0 is used for primary video
ov.setSource(pargs, ovutils::OV_PIPE1);
hwc_rect_t sourceCrop = layer->sourceCrop;
// x,y,w,h
ovutils::Dim dcrop(sourceCrop.left, sourceCrop.top,
sourceCrop.right - sourceCrop.left,
sourceCrop.bottom - sourceCrop.top);
ovutils::Dim dpos;
hwc_rect_t displayFrame = layer->displayFrame;
dpos.x = displayFrame.left;
dpos.y = displayFrame.top;
dpos.w = (displayFrame.right - displayFrame.left);
dpos.h = (displayFrame.bottom - displayFrame.top);
//Calculate the rect for primary based on whether the supplied position
//is within or outside bounds.
const int fbWidth =
ovutils::FrameBufferInfo::getInstance()->getWidth();
const int fbHeight =
ovutils::FrameBufferInfo::getInstance()->getHeight();
if( displayFrame.left < 0 ||
displayFrame.top < 0 ||
displayFrame.right > fbWidth ||
displayFrame.bottom > fbHeight) {
calculate_crop_rects(sourceCrop, displayFrame, fbWidth, fbHeight);
//Update calculated width and height
dcrop.w = sourceCrop.right - sourceCrop.left;
dcrop.h = sourceCrop.bottom - sourceCrop.top;
dpos.x = displayFrame.left;
dpos.y = displayFrame.top;
dpos.w = displayFrame.right - displayFrame.left;
dpos.h = displayFrame.bottom - displayFrame.top;
}
//Only for Primary
ov.setCrop(dcrop, ovutils::OV_PIPE1);
int transform = layer->transform & FINAL_TRANSFORM_MASK;
ovutils::eTransform orient =
static_cast<ovutils::eTransform>(transform);
ov.setTransform(orient, ovutils::OV_PIPE1);
ov.setPosition(dpos, ovutils::OV_PIPE1);
if (!ov.commit(ovutils::OV_PIPE1)) {
ALOGE("%s: commit fails", __FUNCTION__);
return false;
}
return true;
}
bool VideoPIP::configure(hwc_context_t *ctx, hwc_layer_t *yuvLayer,
hwc_layer_t *pipLayer) {
bool ret = true;
if (LIKELY(ctx->mOverlay)) {
overlay::Overlay& ov = *(ctx->mOverlay);
// Set overlay state
ov.setState(sState);
switch(sState) {
case ovutils::OV_2D_PIP_VIDEO_ON_PANEL:
//Configure the primary or background video
ret &= configPrimaryVideo(ctx, yuvLayer);
//Configure the PIP video
ret &= configPIPVideo(ctx, pipLayer);
break;
default:
return false;
}
} else {
//Ov null
return false;
}
return ret;
}
bool VideoPIP::draw(hwc_context_t *ctx, hwc_layer_list_t *list)
{
if(!sIsModeOn || sYuvLayerIndex == -1 || sPIPLayerIndex == -1) {
return true;
}
private_handle_t *hnd = (private_handle_t *)
list->hwLayers[sYuvLayerIndex].handle;
// Lock this buffer for read.
ctx->qbuf->lockAndAdd(hnd);
private_handle_t *piphnd = NULL;
piphnd = (private_handle_t *)list->hwLayers[sPIPLayerIndex].handle;
ctx->qbuf->lockAndAdd(piphnd);
bool ret = true;
overlay::Overlay& ov = *(ctx->mOverlay);
ovutils::eOverlayState state = ov.getState();
switch (state) {
case ovutils::OV_2D_PIP_VIDEO_ON_PANEL:
// Play first video (background)
if (!ov.queueBuffer(hnd->fd, hnd->offset, ovutils::OV_PIPE0)) {
ALOGE("%s: queueBuffer failed for primary video", __FUNCTION__);
ret = false;
}
//Play pip video
if (piphnd && !ov.queueBuffer(piphnd->fd, piphnd->offset,
ovutils::OV_PIPE1)) {
ALOGE("%s: queueBuffer failed for pip video", __FUNCTION__);
ret = false;
}
break;
default:
ALOGE("%s Unused state %s", __FUNCTION__,
ovutils::getStateString(state));
break;
}
return ret;
}
}; //namespace qhwc
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