RK3399 Android7.1 异形屏修改

属性说明：
persist.sys.framebuffer.xoffset //用来调整水平方向偏移
persist.sys.framebuffer.yoffset //用来调整垂直方向偏移
persist.sys.framebuffer.main //用来设置上层应用的渲染布局，这个属性值与裁剪屏尺寸相关，例如可显示区域为 1920x400，那么就设置为 1920x400@60 即可。
sys.hwc.compose_policy=0 //裁剪屏建议关闭HWC，否则在一些场景显示会出现偏差出现抖屏的情况，修改方法可将build.prop文件中的该字段修改为 0，默认值为 6

 

HWC_DISPLAY_PRIMARY = 0,
HWC_DISPLAY_EXTERNAL = 1, // HDMI, EDP

 

hardware\rockchip\hwcomposer\hwcomposer.cpp 

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static int hwc_get_display_configs(struct hwc_composer_device_1 *dev,                                    int display, uint32_t *configs,                                    size_t *num_configs) {   if (!num_configs)     return 0;     struct hwc_context_t *ctx = (struct hwc_context_t *)&dev->common;   DrmConnector *connector = ctx->drm.GetConnectorFromType(display);   if (!connector) {     ALOGE("%s:Failed to get connector for display %d line=%d", __FUNCTION__,display,__LINE__);     return -ENODEV;   }     hwc_drm_display_t *hd = &ctx->displays[connector->display()];   if (!hd->active)     return -ENODEV;     int ret = connector->UpdateModes();   if (ret) {     ALOGE("Failed to update display modes %d", ret);     return ret;   }     if (connector->state() != DRM_MODE_CONNECTED && display == HWC_DISPLAY_EXTERNAL) {     ALOGE("connector is not connected with display %d", display);     return -ENODEV;   }     update_display_bestmode(hd, display, connector);   DrmMode mode = connector->best_mode();   connector->set_current_mode(mode);     char framebuffer_size[PROPERTY_VALUE_MAX];   uint32_t width = 0, height = 0 , vrefresh = 0 ;   if (display == HWC_DISPLAY_PRIMARY)     property_get("persist." PROPERTY_TYPE ".framebuffer.main", framebuffer_size, "use_baseparameter");   else if(display == HWC_DISPLAY_EXTERNAL)     property_get("persist." PROPERTY_TYPE ".framebuffer.aux", framebuffer_size, "use_baseparameter");

android7.1_异形屏修改

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0.dts中配置1920x1080的分辨率 1.build.prop添加下面属性： persist.sys.framebuffer.main=1920x600@60  2.hardware/rockchip/hwcomposer合入下面修改： diff --git a/hwcomposer.cpp b/hwcomposer.cpp index 0fd2177..3ad13a9 100755 --- a/hwcomposer.cpp +++ b/hwcomposer.cpp @@ -3498,8 +3498,10 @@ static int hwc_get_display_configs(struct hwc_composer_device_1 *dev,      char framebuffer_size[PROPERTY_VALUE_MAX];    uint32_t width = 0, height = 0 , vrefresh = 0 ; +  if (display == HWC_DISPLAY_PRIMARY)    property_get("persist.sys.framebuffer.main", framebuffer_size, "use_baseparameter"); - +  else if(display == HWC_DISPLAY_EXTERNAL) +  property_get("persist.sys.framebuffer.aux", framebuffer_size, "use_baseparameter");    /*     * if unset framebuffer_size, get it from baseparameter , by libin     */   @@ -2298,7 +2301,8 @@ static int hwc_prepare(hwc_composer_device_1_t *dev, size_t num_displays,      hd->rel_yres = mode.v_display();      hd->v_total = mode.v_total();      hd->w_scale = (float)mode.h_display() / hd->framebuffer_width; -    hd->h_scale = (float)mode.v_display() / hd->framebuffer_height; +    //hd->h_scale = (float)mode.v_display() / hd->framebuffer_height; +    hd->h_scale = 1.0;      int fbSize = hd->framebuffer_width * hd->framebuffer_height;      //get plane size for display      std::vector<PlaneGroup *>& plane_groups = ctx->drm.GetPlaneGroups(); @@ -3638,7 +3647,8 @@ static int hwc_set_active_config(struct hwc_composer_device_1 *dev, int display,      return -ENOENT;    }    hd->w_scale = (float)mode.h_display() / hd->framebuffer_width; -  hd->h_scale = (float)mode.v_display() / hd->framebuffer_height; +  //hd->h_scale = (float)mode.v_display() / hd->framebuffer_height; +  hd->h_scale = 1.0;      c->set_current_mode(mode);    ctx->drm.UpdateDisplayRoute();