Compress saved traces using LZ4.

1 files changed, 17 insertions, 4 deletions

diff --git a/server/TracyFileRead.hpp b/server/TracyFileRead.hpp
index b7758a27..234b07a6 100755
--- a/server/TracyFileRead.hpp
+++ b/server/TracyFileRead.hpp
@@ -4,6 +4,8 @@
 #include <algorithm>
 #include <stdio.h>
 
+#include "../common/tracy_lz4.hpp"
+
 namespace tracy
 {
 
@@ -19,6 +21,7 @@ public:
     ~FileRead()
     {
         fclose( m_file );
+        LZ4_freeStreamDecode( m_stream );
     }
 
     void Read( void* ptr, size_t size )
@@ -28,12 +31,17 @@ public:
         {
             if( m_offset == BufSize )
             {
-                fread( m_buf, 1, BufSize, m_file );
+                m_active = 1 - m_active;
                 m_offset = 0;
+                uint32_t sz;
+                fread( &sz, 1, sizeof( sz ), m_file );
+                char lz4[LZ4Size];
+                fread( lz4, 1, sz, m_file );
+                LZ4_decompress_safe_continue( m_stream, lz4, m_buf[m_active], sz, BufSize );
             }
 
             const auto sz = std::min( size, BufSize - m_offset );
-            memcpy( dst, m_buf + m_offset, sz );
+            memcpy( dst, m_buf[m_active] + m_offset, sz );
             m_offset += sz;
             dst += sz;
             size -= sz;
@@ -42,15 +50,20 @@ public:
 
 private:
     FileRead( FILE* f )
-        : m_file( f )
+        : m_stream( LZ4_createStreamDecode() )
+        , m_file( f )
         , m_offset( BufSize )
+        , m_active( 1 )
     {}
 
     enum { BufSize = 64 * 1024 };
+    enum { LZ4Size = LZ4_COMPRESSBOUND( BufSize ) };
 
+    LZ4_streamDecode_t* m_stream;
     FILE* m_file;
-    char m_buf[BufSize];
+    char m_buf[2][BufSize];
     size_t m_offset;
+    uint8_t m_active;
 };
 
 }