ref: b60293e1ce9bc1b392e9e6652f17bb44bf9699b2
parent: 4622cd14c24f40b75668e622e6ee399b6bf77881
parent: dd69337e6ea436a091d7441b70c92ae2254920e6
author: Yaowu Xu <[email protected]>
date: Tue Nov 26 09:32:02 EST 2013
Merge "Amended some comments for clarity"
--- a/vp9/common/vp9_enums.h
+++ b/vp9/common/vp9_enums.h
@@ -52,20 +52,22 @@
#define PARTITION_PLOFFSET 4 // number of probability models per block size
#define PARTITION_CONTEXTS (4 * PARTITION_PLOFFSET)
+// block transform size
typedef enum {- TX_4X4 = 0, // 4x4 dct transform
- TX_8X8 = 1, // 8x8 dct transform
- TX_16X16 = 2, // 16x16 dct transform
- TX_32X32 = 3, // 32x32 dct transform
+ TX_4X4 = 0, // 4x4 transform
+ TX_8X8 = 1, // 8x8 transform
+ TX_16X16 = 2, // 16x16 transform
+ TX_32X32 = 3, // 32x32 transform
TX_SIZES
} TX_SIZE;
+// frame transform mode
typedef enum {- ONLY_4X4 = 0,
- ALLOW_8X8 = 1,
- ALLOW_16X16 = 2,
- ALLOW_32X32 = 3,
- TX_MODE_SELECT = 4,
+ ONLY_4X4 = 0, // only 4x4 transform used
+ ALLOW_8X8 = 1, // allow block transform size up to 8x8
+ ALLOW_16X16 = 2, // allow block transform size up to 16x16
+ ALLOW_32X32 = 3, // allow block transform size up to 32x32
+ TX_MODE_SELECT = 4, // transform specified for each block
TX_MODES = 5,
} TX_MODE;