Add snappy as compression algorithm

src/CMakeLists.txt

@@ -14,6 +14,7 @@ pico_sdk_init()
 include(../lib/heatshrink/CMakeLists.txt)
 include(../lib/zlib/interfaceLibForPicoSDK.cmake)
 include(../lib/zstd/interfaceLibForPicoSDK.cmake)
+include(../lib/snappy/interfaceLibForPicoSDK.cmake)
 
 ## Add our own C/C++ files here
 ## Sorted alphabetically
@@ -22,6 +23,7 @@ add_executable(${CMAKE_PROJECT_NAME}
     algo-heatshrink.c
     algo-zlib.c
     algo-zstd.c
+    algo-snappy.c
     main.c
 )
 
@@ -51,6 +53,7 @@ target_link_libraries(${CMAKE_PROJECT_NAME}
     pico_stdlib
     zlib
     zstd
+    snappy
 )
 
 ## enable usb output, disable uart output

src/algo-snappy.c

@@ -0,0 +1,17 @@
+#include "algo-zlib.h"
+
+#include "../lib/snappy/snappy-c.h"
+
+void mysnappy_init()
+{
+}
+
+void mysnappy_compress(uint8_t *input, size_t insize, uint8_t *output, size_t *outsize)
+{
+    snappy_compress(input, insize, output, outsize);
+}
+
+void mysnappy_uncompress(uint8_t *input, size_t insize, uint8_t *output, size_t *outsize)
+{
+    snappy_uncompress(input, insize, output, outsize); 
+}

src/algo-snappy.h

@@ -0,0 +1,10 @@
+#ifndef __ALGO_SNAPPY_H__
+#define __ALGO_SNAPPY_H__
+
+#include "pico/stdlib.h"
+
+void mysnappy_init();
+void mysnappy_compress(uint8_t* input, size_t insize, uint8_t* output, size_t* outsize);
+void mysnappy_uncompress(uint8_t* input, size_t insize, uint8_t* output, size_t* outsize);
+
+#endif // __ALGO_SNAPPY_H__

src/main.c

@@ -18,6 +18,7 @@
 #include "algo-heatshrink.h"
 #include "algo-zlib.h"
 #include "algo-zstd.h"
+#include "algo-snappy.h"
 
 
 // TEST VECTORS
@@ -54,6 +55,7 @@ enum {
     ALGO_HEATSHRINK,
     ALGO_ZLIB,
     ALGO_ZSTD,
+    ALGO_SNAPPY,
     // Add more HERE
     ALGO_NUM_TOTAL
 };
@@ -198,6 +200,13 @@ int main() {
     algos[ALGO_ZSTD].uncompress = zstd_uncompress;
     algos[ALGO_ZSTD].init();
 
+    // Algo 2: snappy
+    sprintf(algos[ALGO_SNAPPY].name, "SNAPPY");
+    algos[ALGO_SNAPPY].init = mysnappy_init;
+    algos[ALGO_SNAPPY].compress = mysnappy_compress;
+    algos[ALGO_SNAPPY].uncompress = mysnappy_uncompress;
+    algos[ALGO_SNAPPY].init();
+
     finish_time = time_us_32();
     elapsed_time = finish_time - start_time;
     printf("%luµs\n", elapsed_time);