New parameters for transport controlled BRC were added
diff --git a/va/va.h b/va/va.h
index 2d0a624..49c72af 100644
--- a/va/va.h
+++ b/va/va.h
@@ -882,8 +882,18 @@
* Convergence is specified in the unit of frame.
* window_size in VAEncMiscParameterRateControl is equal to convergence for AVBR.
* Accuracy is in the range of [1,100], 1 means one percent, and so on.
- * target_percentage in VAEncMiscParameterRateControl is equal to accuracy for AVBR. */
+ * target_percentage in VAEncMiscParameterRateControl is equal to accuracy for AVBR.
+ * */
#define VA_RC_AVBR 0x00000800
+/** \brief Transport Controlled BRC
+ * Specific bitrate control for real time streaming.
+ * TCBRC can instantly react to channel change to remove or significantly reduce the delay.
+ * Application (transport) provides channel feedback to driver through TargetFrameSize.
+ * When channel condition is very good (almost no constraint on instant frame size),
+ * the app should set target frame size as zero. Otherwise, channel capacity divided by fps
+ * should be used.
+ * */
+#define VA_RC_TCBRC 0x00001000
/**@}*/
@@ -2095,8 +2105,17 @@
* the range will be different for different codec
*/
uint32_t quality_factor;
+ /** Target frame size
+ *
+ * Desired frame size in bytes.
+ * This parameter can be used in some RC modes (like Transport Controlled BRC)
+ * where feedback from the app is required.
+ * Zero value means no limits.
+ *
+ */
+ uint32_t target_frame_size;
/** Reserved bytes for future use, must be zero. */
- uint32_t va_reserved[VA_PADDING_MEDIUM - 3];
+ uint32_t va_reserved[VA_PADDING_LOW];
} VAEncMiscParameterRateControl;
/** Encode framerate parameters.
