commit 8bb3b8f79ad63767d1273f7f8353cdbb6a4055ea
author Raj Kamal <rkamal@codeaurora.org> Tue Mar 24 16:22:17 2015 +0530
committer Raj Kamal <rkamal@codeaurora.org> Thu Apr 16 18:28:45 2015 +0530
tree 33ad3de6bc2d21cf6b441313d172a63b162147d2
parent a15b6ae12b43a8d2a1d4a5693bdc3b59414c9b15

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

libgralloc/alloc_controller.cpp

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: