fix const correctness on mjpeg

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/463003

git-svn-id: http://libyuv.googlecode.com/svn/trunk@229 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 228
+Version: 229
 License: BSD
 License File: LICENSE
 

include/libyuv/mjpeg_decoder.h

@@ -42,7 +42,7 @@ struct SetJmpErrorMgr;
 class MJpegDecoder {
  public:
   typedef void (*CallbackFunction)(void* opaque,
-                                   const uint8** data,
+                                   const uint8* const* data,
                                    const int* strides,
                                    int rows);
 

include/libyuv/version.h

@@ -11,7 +11,7 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define INCLUDE_LIBYUV_VERSION 228
+#define INCLUDE_LIBYUV_VERSION 229
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_
 

source/convert.cc

@@ -1377,7 +1377,7 @@ struct I420Buffers {
 };
 
 static void JpegCopyI420(void* opaque,
-                         const uint8** data,
+                         const uint8* const* data,
                          const int* strides,
                          int rows) {
   I420Buffers* dest = static_cast<I420Buffers*>(opaque);
@@ -1395,7 +1395,7 @@ static void JpegCopyI420(void* opaque,
 }
 
 static void JpegI422ToI420(void* opaque,
-                           const uint8** data,
+                           const uint8* const* data,
                            const int* strides,
                            int rows) {
   I420Buffers* dest = static_cast<I420Buffers*>(opaque);
@@ -1413,7 +1413,7 @@ static void JpegI422ToI420(void* opaque,
 }
 
 static void JpegI444ToI420(void* opaque,
-                           const uint8** data,
+                           const uint8* const* data,
                            const int* strides,
                            int rows) {
   I420Buffers* dest = static_cast<I420Buffers*>(opaque);
@@ -1431,7 +1431,7 @@ static void JpegI444ToI420(void* opaque,
 }
 
 static void JpegI411ToI420(void* opaque,
-                           const uint8** data,
+                           const uint8* const* data,
                            const int* strides,
                            int rows) {
   I420Buffers* dest = static_cast<I420Buffers*>(opaque);
@@ -1449,7 +1449,7 @@ static void JpegI411ToI420(void* opaque,
 }
 
 static void JpegI400ToI420(void* opaque,
-                           const uint8** data,
+                           const uint8* const* data,
                            const int* strides,
                            int rows) {
   I420Buffers* dest = static_cast<I420Buffers*>(opaque);