libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_enums.h

 /*
  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef VP9_COMMON_VP9_ENUMS_H_
 #define VP9_COMMON_VP9_ENUMS_H_
 
 #include "./vpx_config.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #define MI_SIZE_LOG2 3
 #define MI_BLOCK_SIZE_LOG2 (6 - MI_SIZE_LOG2)  // 64 = 2^6
 
 #define MI_SIZE (1 << MI_SIZE_LOG2)  // pixels per mi-unit
 #define MI_BLOCK_SIZE (1 << MI_BLOCK_SIZE_LOG2)  // mi-units per max block
 
 #define MI_MASK (MI_BLOCK_SIZE - 1)
 
 // Bitstream profiles indicated by 2-3 bits in the uncompressed header.
 // 00: Profile 0.  8-bit 4:2:0 only.
-// 10: Profile 1.  Adds 4:4:4, 4:2:2, alpha to Profile 0.
+// 10: Profile 1.  Adds 4:4:4, 4:2:2, and 4:4:0 to Profile 0.
 // 01: Profile 2.  Supports 10-bit and 12-bit color only, with 4:2:0 sampling.
-// 110: Profile 3. Supports 10-bit and 12-bit color only, with 4:2:2/4:4:4
-//                 sampling and alpha.
+// 110: Profile 3. Supports 10-bit and 12-bit color only, with 4:2:2/4:4:4/4:4:0
+//                 subsampling.
 // 111: Undefined profile.
 typedef enum BITSTREAM_PROFILE {
   PROFILE_0,
   PROFILE_1,
   PROFILE_2,
   PROFILE_3,
   MAX_PROFILES
 } BITSTREAM_PROFILE;
 
 typedef enum BIT_DEPTH {
@@ skipping 74 matching lines @@
   VP9_LAST_FLAG = 1 << 0,
   VP9_GOLD_FLAG = 1 << 1,
   VP9_ALT_FLAG = 1 << 2,
 } VP9_REFFRAME;
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_COMMON_VP9_ENUMS_H_