diff options
Diffstat (limited to 'liboverlay/overlayUtils.cpp')
| -rw-r--r-- | liboverlay/overlayUtils.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/liboverlay/overlayUtils.cpp b/liboverlay/overlayUtils.cpp index 280b21461..a22802bcb 100644 --- a/liboverlay/overlayUtils.cpp +++ b/liboverlay/overlayUtils.cpp @@ -151,6 +151,51 @@ bool FrameBufferInfo::supportTrueMirroring() const { return (trueMirroringSupported && mBorderFillSupported); } +/* clears any VG pipes allocated to the fb devices */ +int initOverlay() { + msmfb_mixer_info_req req; + mdp_mixer_info *minfo = NULL; + char fb_dev_name[PATH_MAX]; + int fd = -1; + // loop upto FB_MAX devices + for(int i = 0; i < FB_MAX; i++) { + snprintf(fb_dev_name, PATH_MAX, Res::fbPath, i); + ALOGD("initoverlay:: opening the device:: %s", fb_dev_name); + fd = ::open(fb_dev_name, O_RDWR, 0); + if(fd < 0) { + // break out of this loop when there is no framebuffer node exists + break; + } + //Get the mixer configuration */ + req.mixer_num = i; + if (ioctl(fd, MSMFB_MIXER_INFO, &req) == -1) { + ALOGE("ERROR: MSMFB_MIXER_INFO ioctl failed"); + close(fd); + continue; + } + minfo = req.info; + for (int j = 0; j < req.cnt; j++) { + ALOGD("ndx=%d num=%d z_order=%d", minfo->pndx, minfo->pnum, + minfo->z_order); + // except the RGB base layer with z_order of -1, clear any + // other pipes connected to mixer. + if((minfo->z_order) != -1) { + int index = minfo->pndx; + ALOGD("Unset overlay with index: %d at mixer %d", index, i); + if(ioctl(fd, MSMFB_OVERLAY_UNSET, &index) == -1) { + ALOGE("ERROR: MSMFB_OVERLAY_UNSET failed"); + close(fd); + return -1; + } + } + minfo++; + } + close(fd); + fd = -1; + } + return 0; +} + //-------------------------------------------------------- //Refer to graphics.h, gralloc_priv.h, msm_mdp.h int getMdpFormat(int format) { |