display: Add video transcoder stats metadata support

Add support to assign video decoder stat info metadata
in gralloc buffer with in gralloc interface.

Change-Id: I87a130cff68e425a5493b4711e2c344a45597254
Signed-off-by: Mahesh Kumar Sharma <quic_smahesh@quicinc.com>
diff --git a/gralloc/QtiGralloc.h b/gralloc/QtiGralloc.h
index ac96e7f..c8e4ef8 100644
--- a/gralloc/QtiGralloc.h
+++ b/gralloc/QtiGralloc.h
@@ -96,6 +96,9 @@
 static const MetadataType MetadataType_VideoHistogramStats = {VENDOR_QTI,
                                                               QTI_VIDEO_HISTOGRAM_STATS};
 
+static const MetadataType MetadataType_VideoTranscodeStats = {VENDOR_QTI,
+                                                              QTI_VIDEO_TRANSCODE_STATS};
+
 static const MetadataType MetadataType_VideoTimestampInfo = {VENDOR_QTI, QTI_VIDEO_TS_INFO};
 
 static const MetadataType MetadataType_FD = {VENDOR_QTI, QTI_FD};
@@ -161,6 +164,8 @@
 Error encodeCVPMetadata(CVPMetadata &in, hidl_vec<uint8_t> *out);
 Error decodeVideoHistogramMetadata(hidl_vec<uint8_t> &in, VideoHistogramMetadata *out);
 Error encodeVideoHistogramMetadata(VideoHistogramMetadata &in, hidl_vec<uint8_t> *out);
+Error decodeVideoTranscodeStatsMetadata(hidl_vec<uint8_t> &in, VideoTranscodeStatsMetadata *out);
+Error encodeVideoTranscodeStatsMetadata(VideoTranscodeStatsMetadata &in, hidl_vec<uint8_t> *out);
 Error decodeVideoTimestampInfo(hidl_vec<uint8_t> &in, VideoTimestampInfo *out);
 Error encodeVideoTimestampInfo(VideoTimestampInfo &in, hidl_vec<uint8_t> *out);
 Error decodeYUVPlaneInfoMetadata(hidl_vec<uint8_t> &in, qti_ycbcr *out);
diff --git a/gralloc/QtiGrallocMetadata.h b/gralloc/QtiGrallocMetadata.h
index ccccaf6..98a12c6 100644
--- a/gralloc/QtiGrallocMetadata.h
+++ b/gralloc/QtiGrallocMetadata.h
@@ -71,7 +71,8 @@
 #define QTI_MEM_HANDLE 10027
 #define QTI_TIMED_RENDERING 10028
 #define QTI_CUSTOM_CONTENT_METADATA 10029
-
+// Video transcode metadata stat
+#define QTI_VIDEO_TRANSCODE_STATS 10030
 // Used to indicate to framework that internal definitions are used instead
 #define COMPRESSION_QTI_UBWC 20001
 #define INTERLACED_QTI 20002
@@ -168,6 +169,13 @@
   uint32_t reserved[12];
 };
 
+#define VIDEO_TRANSCODE_STATS_SIZE 128 //32 payloads with 4 bytes each: 4x32 = 128
+#define VIDEO_TRANSCODE_PAYLOAD_NUM 32
+struct VideoTranscodeStatsMetadata {
+  uint32_t stats_info[VIDEO_TRANSCODE_PAYLOAD_NUM];   /* Transcode stats payload */
+  uint32_t stat_len;                                  /* Full payload size in bytes */
+};
+
 #define VIDEO_TIMESTAMP_INFO_SIZE 16
 struct VideoTimestampInfo {
   uint32_t enable;               /* Enable video timestamp info */
diff --git a/gralloc/QtiGrallocPriv.h b/gralloc/QtiGrallocPriv.h
index 688d6df..56e2b1b 100644
--- a/gralloc/QtiGrallocPriv.h
+++ b/gralloc/QtiGrallocPriv.h
@@ -122,7 +122,7 @@
   /* Populated and used by adreno during buffer size calculation.
    * Set only for RGB formats. */
   GraphicsMetadata graphics_metadata;
-  /* Video hisogram stats populated by video decoder */
+  /* Video histogram stats populated by video decoder */
   struct VideoHistogramMetadata video_histogram_stats;
   /*
    * Producer (camera) will set cvp metadata and consumer (video) will
@@ -143,6 +143,8 @@
   /* Set by clients to indicate that timed rendering will be enabled
    * or disabled for this buffer. */
   uint32_t timedRendering;
+  /* Video transcode stat populated by video decoder */
+  struct VideoTranscodeStatsMetadata video_transcode_stats;
 };
 
 namespace qtigralloc {