De-duplicate blit API -> fatfs glue

32blit-config.cmake

@@ -40,6 +40,7 @@ if (NOT DEFINED BLIT_ONCE)
 		add_definitions("-DWIN32")
 	endif()
 
+	add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/3rd-party 3rd-party)
 	add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/32blit 32blit)
 
 	function (blit_assets_yaml TARGET FILE)

32blit-pico/CMakeLists.txt

@@ -13,11 +13,13 @@ set(PICO_SDK_VERSION_MINOR ${PICO_SDK_VERSION_MINOR} PARENT_SCOPE)
 set(PICO_SDK_VERSION_REVISION ${PICO_SDK_VERSION_REVISION} PARENT_SCOPE)
 
 # make sure BlitEngine is built with the right exception flags
-target_link_libraries(BlitEngine pico_cxx_options)
+target_link_libraries(BlitEngine PUBLIC pico_cxx_options)
 
 # also enable function/data sectons
 target_compile_options(BlitEngine PRIVATE -ffunction-sections -fdata-sections)
 
+add_subdirectory(../32blit-shared ../32blit-shared)
+
 # driver helper
 # can override driver choice by pre-setting BLIT_x_DRIVER
 function(blit_driver DRV NAME)
@@ -31,9 +33,6 @@ endfunction()
 
 add_library(BlitHalPico INTERFACE)
 target_sources(BlitHalPico INTERFACE
-    ${CMAKE_CURRENT_LIST_DIR}/../3rd-party/fatfs/ff.c
-    ${CMAKE_CURRENT_LIST_DIR}/../3rd-party/fatfs/ffunicode.c
-
     ${CMAKE_CURRENT_LIST_DIR}/display.cpp
     ${CMAKE_CURRENT_LIST_DIR}/file.cpp
     ${CMAKE_CURRENT_LIST_DIR}/led.cpp
@@ -43,10 +42,15 @@ target_sources(BlitHalPico INTERFACE
     ${CMAKE_CURRENT_LIST_DIR}/usb_descriptors.c
 )
 
-target_link_libraries(BlitHalPico INTERFACE hardware_dma hardware_pio hardware_pwm hardware_spi pico_multicore pico_stdlib pico_unique_id pico_rand tinyusb_device)
+target_link_libraries(BlitHalPico INTERFACE
+    hardware_dma hardware_pio hardware_pwm hardware_spi
+    pico_multicore pico_stdlib pico_unique_id pico_rand
+    tinyusb_device
+    FatFsBlitAPI
+)
+
 target_include_directories(BlitHalPico INTERFACE
     ${CMAKE_CURRENT_LIST_DIR} # for tusb_config
-    ${CMAKE_CURRENT_LIST_DIR}/../3rd-party/fatfs
 )
 
 target_compile_definitions(BlitHalPico INTERFACE

32blit-pico/file.cpp

@@ -14,8 +14,6 @@
 static FATFS fs;
 static bool initialised = false;
 
-std::vector<void *> open_files;
-
 // fatfs io funcs
 DSTATUS disk_initialize(BYTE pdrv) {
   initialised = storage_init();
@@ -81,150 +79,6 @@ void init_fs() {
     printf("Failed to mount filesystem! (%i)\n", res);
 }
 
-bool get_files_open() {
-  return open_files.size() > 0;
-}
-
-void close_open_files() {
-  while(!open_files.empty())
-    close_file(open_files.back());
-}
-
-void *open_file(const std::string &file, int mode) {
-  FIL *f = new FIL();
-
-  BYTE ff_mode = 0;
-
-  if(mode & blit::OpenMode::read)
-    ff_mode |= FA_READ;
-
-  if(mode & blit::OpenMode::write)
-    ff_mode |= FA_WRITE;
-
-  if(mode == blit::OpenMode::write)
-    ff_mode |= FA_CREATE_ALWAYS;
-
-  FRESULT r = f_open(f, file.c_str(), ff_mode);
-
-  if(r == FR_OK) {
-    open_files.push_back(f);
-    return f;
-  }
-
-  delete f;
-  return nullptr;
-}
-
-int32_t read_file(void *fh, uint32_t offset, uint32_t length, char *buffer) {
-  FRESULT r = FR_OK;
-  FIL *f = (FIL *)fh;
-
-  if(offset != f_tell(f))
-    r = f_lseek(f, offset);
-
-  if(r == FR_OK){
-    unsigned int bytes_read;
-    r = f_read(f, buffer, length, &bytes_read);
-    if(r == FR_OK){
-      return bytes_read;
-    }
-  }
-
-  return -1;
-}
-
-int32_t write_file(void *fh, uint32_t offset, uint32_t length, const char *buffer) {
-  FRESULT r = FR_OK;
-  FIL *f = (FIL *)fh;
-
-  if(offset != f_tell(f))
-    r = f_lseek(f, offset);
-
-  if(r == FR_OK) {
-    unsigned int bytes_written;
-    r = f_write(f, buffer, length, &bytes_written);
-    if(r == FR_OK) {
-      return bytes_written;
-    }
-  }
-
-  return -1;
-}
-
-int32_t close_file(void *fh) {
-  FRESULT r;
-
-  r = f_close((FIL *)fh);
-
-  for(auto it = open_files.begin(); it != open_files.end(); ++it) {
-    if(*it == fh) {
-      open_files.erase(it);
-      break;
-    }
-  }
-
-  delete (FIL *)fh;
-  return r == FR_OK ? 0 : -1;
-}
-
-uint32_t get_file_length(void *fh) {
-  return f_size((FIL *)fh);
-}
-
-void list_files(const std::string &path, std::function<void(blit::FileInfo &)> callback) {
-  DIR dir;
-
-  if(f_opendir(&dir, path.c_str()) != FR_OK)
-    return;
-
-  FILINFO ent;
-
-  while(f_readdir(&dir, &ent) == FR_OK && ent.fname[0]) {
-    blit::FileInfo info;
-
-    info.name = ent.fname;
-    info.flags = 0;
-    info.size = ent.fsize;
-
-    if(ent.fattrib & AM_DIR)
-      info.flags |= blit::FileFlags::directory;
-
-    callback(info);
-  }
-
-  f_closedir(&dir);
-}
-
-bool file_exists(const std::string &path) {
-  FILINFO info;
-  return f_stat(path.c_str(), &info) == FR_OK && !(info.fattrib & AM_DIR);
-}
-
-bool directory_exists(const std::string &path) {
-  FILINFO info;
-  return f_stat(path.c_str(), &info) == FR_OK && (info.fattrib & AM_DIR);
-}
-
-bool create_directory(const std::string &path) {
-  FRESULT r;
-
-  // strip trailing slash
-  if(path.back() == '/')
-     r = f_mkdir(path.substr(0, path.length() - 1).c_str());
-  else
-    r = f_mkdir(path.c_str());
-
-  return r == FR_OK || r == FR_EXIST;
-}
-
-bool rename_file(const std::string &old_name, const std::string &new_name) {
-  return f_rename(old_name.c_str(), new_name.c_str()) == FR_OK;
-}
-
-bool remove_file(const std::string &path) {
-  return f_unlink(path.c_str()) == FR_OK;
-}
-
 static char save_path[32]; // max game title length is 24 + ".blit/" + "/"
 
 const char *get_save_path() {

32blit-pico/file.hpp

@@ -1,26 +1,7 @@
 #pragma once
 
-#include <cstdint>
-#include <functional>
-#include <string>
-#include <vector>
-
-#include "engine/file.hpp"
+#include "fatfs_blit_api.hpp"
 
 void init_fs();
 
-bool get_files_open();
-void close_open_files();
-
-void *open_file(const std::string &file, int mode);
-int32_t read_file(void *fh, uint32_t offset, uint32_t length, char *buffer);
-int32_t write_file(void *fh, uint32_t offset, uint32_t length, const char *buffer);
-int32_t close_file(void *fh);
-uint32_t get_file_length(void *fh);
-void list_files(const std::string &path, std::function<void(blit::FileInfo &)> callback);
-bool file_exists(const std::string &path);
-bool directory_exists(const std::string &path);
-bool create_directory(const std::string &path);
-bool rename_file(const std::string &old_name, const std::string &new_name);
-bool remove_file(const std::string &path);
 const char *get_save_path();

32blit-shared/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(fatfs-blit-api)

32blit-shared/fatfs-blit-api/CMakeLists.txt

@@ -0,0 +1,4 @@
+add_library(FatFsBlitAPI INTERFACE)
+target_sources(FatFsBlitAPI INTERFACE ${CMAKE_CURRENT_LIST_DIR}/fatfs_blit_api.cpp)
+target_include_directories(FatFsBlitAPI INTERFACE ${CMAKE_CURRENT_LIST_DIR})
+target_link_libraries(FatFsBlitAPI INTERFACE FatFs)