aomcx.h: update tile columns/rows documentation
- correct tile rows range, [0, 6] since:
492c545fa Remove CONFIG_MAX_TILE
- normalize text between rows and columns
BUG=aomedia:2128
Change-Id: I98163af57f470d198cb87c30784ea910e08312ca
diff --git a/aom/aomcx.h b/aom/aomcx.h
index bbf1775..cb33d02 100644
--- a/aom/aomcx.h
+++ b/aom/aomcx.h
@@ -291,11 +291,10 @@
/*!\brief Codec control function to set number of tile columns.
*
* In encoding and decoding, AV1 allows an input image frame be partitioned
- * into separated vertical tile columns, which can be encoded or decoded
+ * into separate vertical tile columns, which can be encoded or decoded
* independently. This enables easy implementation of parallel encoding and
- * decoding. This control requests the encoder to use column tiles in
- * encoding an input frame, with number of tile columns (in Log2 unit) as
- * the parameter:
+ * decoding. The parameter for this control describes the number of tile
+ * columns (in log2 units), which has a valid range of [0, 6]:
* 0 = 1 tile column
* 1 = 2 tile columns
* 2 = 4 tile columns
@@ -312,16 +311,14 @@
/*!\brief Codec control function to set number of tile rows.
*
* In encoding and decoding, AV1 allows an input image frame be partitioned
- * into separated horizontal tile rows. Tile rows are encoded or decoded
- * sequentially. Even though encoding/decoding of later tile rows depends on
- * earlier ones, this allows the encoder to output data packets for tile rows
- * prior to completely processing all tile rows in a frame, thereby reducing
- * the latency in processing between input and output. The parameter
- * for this control describes the number of tile rows, which has a valid
- * range [0, 2]:
+ * into separate horizontal tile rows, which can be encoded or decoded
+ * independently. The parameter for this control describes the number of tile
+ * rows (in log2 units), which has a valid range of [0, 6]:
* 0 = 1 tile row
* 1 = 2 tile rows
* 2 = 4 tile rows
+ * .....
+ * n = 2**n tile rows
*
* By default, the value is 0, i.e. one single row tile for entire image.
*/
