hwc: Add support for YCrCb_420_SP_VENUS(NV21_VENUS)

* Earlier, camera preview buffers were of NV21(YCrCb_420_SP)
  and the video buffers were of NV12_VENUS(YCbCr_420_SP_VENUS)
  format. Now that the video encoder has support for NV21,
  both the camera and video buffers can be of
  NV21_VENUS(YCrCb_420_SP_VENUS) format.

* If the preview and video buffer sizes are the same,
  CPP double pass to generate video and preview buffers can be
  avoided and the buffers can now be generated within a single pass
  with CPP duplication thereby saving power.

* Add support in gralloc for NV12_VENUS format to achieve
  the same.

Change-Id: I7001f975f2cafa21c893e7384ddbddd5f2788b1d
diff --git a/libcopybit/copybit.cpp b/libcopybit/copybit.cpp
index 02f0c7e..10f5943 100644
--- a/libcopybit/copybit.cpp
+++ b/libcopybit/copybit.cpp
@@ -146,6 +146,7 @@
         case HAL_PIXEL_FORMAT_YCbCr_420_SP:  return MDP_Y_CBCR_H2V2;
         case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO: return MDP_Y_CBCR_H2V2_ADRENO;
         case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS: return MDP_Y_CBCR_H2V2_VENUS;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS: return MDP_Y_CRCB_H2V2_VENUS;
         case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: return MDP_Y_CBCR_H2V2;
     }
     return -1;
diff --git a/libgralloc/alloc_controller.cpp b/libgralloc/alloc_controller.cpp
index 3e17061..41a9707 100644
--- a/libgralloc/alloc_controller.cpp
+++ b/libgralloc/alloc_controller.cpp
@@ -173,6 +173,10 @@
             aligned_w = VENUS_Y_STRIDE(COLOR_FMT_NV12, width);
             aligned_h = VENUS_Y_SCANLINES(COLOR_FMT_NV12, height);
             break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+            aligned_w = VENUS_Y_STRIDE(COLOR_FMT_NV21, width);
+            aligned_h = VENUS_Y_SCANLINES(COLOR_FMT_NV21, height);
+            break;
         case HAL_PIXEL_FORMAT_BLOB:
             break;
         case HAL_PIXEL_FORMAT_NV21_ZSL:
@@ -517,6 +521,9 @@
         case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
             size = VENUS_BUFFER_SIZE(COLOR_FMT_NV12, width, height);
             break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+            size = VENUS_BUFFER_SIZE(COLOR_FMT_NV21, width, height);
+            break;
         case HAL_PIXEL_FORMAT_BLOB:
             if(height != 1) {
                 ALOGE("%s: Buffers with format HAL_PIXEL_FORMAT_BLOB \
@@ -680,6 +687,7 @@
         case HAL_PIXEL_FORMAT_YCrCb_420_SP:
         case HAL_PIXEL_FORMAT_YCrCb_422_SP:
         case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
         case HAL_PIXEL_FORMAT_NV21_ZSL:
         case HAL_PIXEL_FORMAT_RAW_SENSOR:
         case HAL_PIXEL_FORMAT_RAW10:
diff --git a/libgralloc/gralloc_priv.h b/libgralloc/gralloc_priv.h
index 676c3bc..a38c36c 100755
--- a/libgralloc/gralloc_priv.h
+++ b/libgralloc/gralloc_priv.h
@@ -103,6 +103,7 @@
 #define HAL_PIXEL_FORMAT_YCrCb_422_I             0x111
 #define HAL_PIXEL_FORMAT_BGRX_8888               0x112
 #define HAL_PIXEL_FORMAT_NV21_ZSL                0x113
+#define HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS      0x114
 #define HAL_PIXEL_FORMAT_INTERLACE               0x180
 
 //v4l2_fourcc('Y', 'U', 'Y', 'L'). 24 bpp YUYV 4:2:2 10 bit per component
diff --git a/libhwcomposer/hwc_dump_layers.cpp b/libhwcomposer/hwc_dump_layers.cpp
index aad984d..fca8a5c 100644
--- a/libhwcomposer/hwc_dump_layers.cpp
+++ b/libhwcomposer/hwc_dump_layers.cpp
@@ -448,6 +448,9 @@
         case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
             strlcpy(pixFormatStr, "YCbCr_420_SP_VENUS", sizeof(pixFormatStr));
             break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+            strlcpy(pixFormatStr, "YCrCb_420_SP_VENUS", sizeof(pixFormatStr));
+            break;
         default:
             size_t len = sizeof(pixFormatStr);
             snprintf(pixFormatStr, len, "Unknown0x%X", format);
diff --git a/liboverlay/overlayUtils.cpp b/liboverlay/overlayUtils.cpp
index b37eba9..d87bee6 100644
--- a/liboverlay/overlayUtils.cpp
+++ b/liboverlay/overlayUtils.cpp
@@ -128,6 +128,8 @@
             //NV12 encodeable format maps to the venus format on
             //B-Family targets
             return MDP_Y_CBCR_H2V2_VENUS;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+            return MDP_Y_CRCB_H2V2_VENUS;
         default:
             //Unsupported by MDP
             //---gralloc_priv.h-----
@@ -227,6 +229,8 @@
             return HAL_PIXEL_FORMAT_YCrCb_444_SP;
         case MDP_Y_CBCR_H2V2_VENUS:
             return HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS;
+        case MDP_Y_CRCB_H2V2_VENUS:
+            return HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS;
         default:
             ALOGE("%s: Unsupported MDP format = 0x%x", __func__, mdpFormat);
             return -1;
diff --git a/liboverlay/overlayUtils.h b/liboverlay/overlayUtils.h
index 5e3bd1f..17ec268 100644
--- a/liboverlay/overlayUtils.h
+++ b/liboverlay/overlayUtils.h
@@ -420,6 +420,7 @@
         case MDP_Y_CR_CB_H2V2:
         case MDP_Y_CR_CB_GH2V2:
         case MDP_Y_CBCR_H2V2_VENUS:
+        case MDP_Y_CRCB_H2V2_VENUS:
         case MDP_YCBYCR_H2V1:
         case MDP_YCRYCB_H2V1:
             return true;
@@ -478,6 +479,7 @@
     formats[MDP_BGR_565] = STR(MDP_BGR_565);
     formats[MDP_BGR_888] = STR(MDP_BGR_888);
     formats[MDP_Y_CBCR_H2V2_VENUS] = STR(MDP_Y_CBCR_H2V2_VENUS);
+    formats[MDP_Y_CRCB_H2V2_VENUS] = STR(MDP_Y_CRCB_H2V2_VENUS);
     formats[MDP_BGRX_8888] = STR(MDP_BGRX_8888);
     formats[MDP_RGBA_8888_TILE] = STR(MDP_RGBA_8888_TILE);
     formats[MDP_ARGB_8888_TILE] = STR(MDP_ARGB_8888_TILE);