[Libva] [PATCH Libva-intel-driver] Encoding: Update the comment for the data structure about the packed rawdata/slice_header data

[Zhao, Yakui]

From: "Zhao, Yakui" <yakui.zhao at intel.com>

Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
---
 src/i965_drv_video.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/i965_drv_video.h b/src/i965_drv_video.h
index 418c277..fff301c 100644
--- a/src/i965_drv_video.h
+++ b/src/i965_drv_video.h
@@ -150,7 +150,7 @@ struct encode_state
     int num_slice_params_ext;
 
     /* For the packed data that needs to be inserted into video clip */
-    /* currently it is mainly for packed raw data */
+    /* currently it is mainly to track packed raw data and packed slice_header data. */
     struct buffer_store **packed_header_params_ext;
     int max_packed_header_params_ext;
     int num_packed_header_params_ext;
@@ -162,7 +162,11 @@ struct encode_state
     int slice_num;
     /* This is to store the first index of packed data for one slice */
     int *slice_rawdata_index;
-    /* This is to store the number of packed data for one slice */
+    /* This is to store the number of packed data for one slice.
+     * Both packed rawdata and slice_header data are tracked by this
+     * this variable. That is to say: When one packed slice_header is parsed,
+     * this variable will also be increased.
+     */
     int *slice_rawdata_count;
 
     /* This is to store the index of packed slice header for one slice */
-- 
1.7.12-rc1