Add steam screenshot api.

dll/local_storage.cpp

@@ -17,6 +17,16 @@
 
 #include "local_storage.h"
 
+#define STB_IMAGE_IMPLEMENTATION
+#define STB_IMAGE_STATIC
+#define STBI_ONLY_PNG
+#define STBI_ONLY_JPEG
+#include "../stb/stb_image.h"
+
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#define STB_IMAGE_WRITE_STATIC
+#include "../stb/stb_image_write.h"
+
 struct File_Data {
     std::string name;
 };
@@ -143,6 +153,16 @@ std::vector<std::string> Local_Storage::get_filenames_path(std::string path)
     return std::vector<std::string>();
 }
 
+std::vector<image_pixel_t> Local_Storage::load_image(std::string const& image_path)
+{
+    return std::vector<image_pixel_t>();
+}
+
+bool Local_Storage::save_screenshot(std::string const& image_path, uint8_t* img_ptr, int32_t width, int32_t height, int32_t channels)
+{
+    return false;
+}
+
 #else
 #if defined(__WINDOWS__)
 
@@ -737,4 +757,32 @@ bool Local_Storage::write_json_file(std::string folder, std::string const&file,
     return false;
 }
 
+std::vector<image_pixel_t> Local_Storage::load_image(std::string const& image_path)
+{
+    std::vector<image_pixel_t> res;
+    FILE* hFile = fopen(image_path.c_str(), "r");
+    if (hFile != nullptr)
+    {
+        int width, height;
+        image_pixel_t* img = (image_pixel_t*)stbi_load_from_file(hFile, &width, &height, nullptr, 4);
+        if (img != nullptr)
+        {
+            res.resize(width*height);
+            std::copy(img, img + width * height, res.begin());
+
+            stbi_image_free(img);
+        }
+        fclose(hFile);
+    }
+    return res;
+}
+
+bool Local_Storage::save_screenshot(std::string const& image_path, uint8_t* img_ptr, int32_t width, int32_t height, int32_t channels)
+{
+    std::string screenshot_path = std::move(save_directory + appid + screenshots_folder + PATH_SEPARATOR); 
+    create_directory(screenshot_path);
+    screenshot_path += image_path;
+    return stbi_write_png(screenshot_path.c_str(), width, height, channels, img_ptr, 0) == 1;
+}
+
 #endif

dll/local_storage.h

@@ -22,6 +22,25 @@
 
 #define MAX_FILENAME_LENGTH 300
 
+union image_pixel_t
+{
+    uint32_t pixel;
+    struct pixel_channels_t
+    {
+        uint8_t r;
+        uint8_t g;
+        uint8_t b;
+        uint8_t a;
+    } channels;
+};
+
+struct image_t
+{
+    size_t width;
+    size_t height;
+    std::vector<image_pixel_t> pix_map;
+};
+
 class Local_Storage {
 public:
     static constexpr auto inventory_storage_folder = "inventory";
@@ -29,6 +48,7 @@ public:
     static constexpr auto remote_storage_folder    = "remote";
     static constexpr auto stats_storage_folder     = "stats";
     static constexpr auto user_data_storage        = "local";
+    static constexpr auto screenshots_folder       = "screenshots";
     static constexpr auto game_settings_folder     = "steam_settings";
 
 private:
@@ -62,6 +82,9 @@ public:
     bool load_json(std::string full_path, nlohmann::json& json);
     bool load_json_file(std::string folder, std::string const& file, nlohmann::json& json);
     bool write_json_file(std::string folder, std::string const& file, nlohmann::json const& json);
+
+    std::vector<image_pixel_t> load_image(std::string const& image_path);
+    bool save_screenshot(std::string const& image_path, uint8_t* img_ptr, int32_t width, int32_t height, int32_t channels);
 };
 
 #endif

dll/steam_client.cpp

@@ -72,7 +72,7 @@ Steam_Client::Steam_Client()
     steam_apps = new Steam_Apps(settings_client, callback_results_client);
     steam_networking = new Steam_Networking(settings_client, network, callbacks_client, run_every_runcb);
     steam_remote_storage = new Steam_Remote_Storage(settings_client, local_storage, callback_results_client);
-    steam_screenshots = new Steam_Screenshots();
+    steam_screenshots = new Steam_Screenshots(local_storage, callbacks_client);
     steam_http = new Steam_HTTP(settings_client, network, callback_results_client, callbacks_client);
     steam_controller = new Steam_Controller(settings_client, callback_results_client, callbacks_client, run_every_runcb);
     steam_ugc = new Steam_UGC(settings_client, callback_results_client, callbacks_client);

dll/steam_screenshots.cpp

@@ -17,12 +17,40 @@
 
 #include "steam_screenshots.h" 
 
+Steam_Screenshots::Steam_Screenshots(class Local_Storage* local_storage, class SteamCallBacks* callbacks) :
+    local_storage(local_storage),
+    callbacks(callbacks)
+{
+}
+
+ScreenshotHandle Steam_Screenshots::create_screenshot_handle()
+{
+    static ScreenshotHandle handle = 100;
+    return handle++;
+}
+
 // Writes a screenshot to the user's screenshot library given the raw image data, which must be in RGB format.
 // The return value is a handle that is valid for the duration of the game process and can be used to apply tags.
 ScreenshotHandle Steam_Screenshots::WriteScreenshot( void *pubRGB, uint32 cubRGB, int nWidth, int nHeight )
 {
     PRINT_DEBUG("WriteScreenshot\n");
+    
+    char buff[128];
+    auto now = std::chrono::system_clock::now();
+    time_t now_time;
+    now_time = std::chrono::duration_cast<std::chrono::seconds>(now.time_since_epoch()).count();
+    strftime(buff, 128, "%a_%b_%d_%H_%M_%S_%Y", localtime(&now_time));
+    std::string screenshot_name = buff;
+    screenshot_name += ".png";
+
+    if (!local_storage->save_screenshot( screenshot_name, (uint8_t*)pubRGB, nWidth, nHeight, 3))
         return INVALID_SCREENSHOT_HANDLE;
+
+    auto handle = create_screenshot_handle();
+    auto& infos = _screenshots[handle];
+    infos.screenshot_name = buff;
+
+    return handle;
 }
 
 
@@ -33,7 +61,30 @@ ScreenshotHandle Steam_Screenshots::WriteScreenshot( void *pubRGB, uint32 cubRGB
 ScreenshotHandle Steam_Screenshots::AddScreenshotToLibrary( const char *pchFilename, const char *pchThumbnailFilename, int nWidth, int nHeight )
 {
     PRINT_DEBUG("AddScreenshotToLibrary\n");
+    
+    if (pchFilename == nullptr)
         return INVALID_SCREENSHOT_HANDLE;
+
+    std::vector<image_pixel_t> pixels(std::move(local_storage->load_image(pchFilename)));
+    if (pixels.size() != size_t(nWidth) * size_t(nHeight))
+        return INVALID_SCREENSHOT_HANDLE;
+
+    char buff[128];
+    auto now = std::chrono::system_clock::now();
+    time_t now_time;
+    now_time = std::chrono::duration_cast<std::chrono::seconds>(now.time_since_epoch()).count();
+    strftime(buff, 128, "%a_%b_%d_%H_%M_%S_%Y", localtime(&now_time));
+    std::string screenshot_name = buff;
+    screenshot_name += ".png";
+
+    if (!local_storage->save_screenshot(screenshot_name, (uint8_t*)pixels.data(), nWidth, nHeight, 4))
+        return INVALID_SCREENSHOT_HANDLE;
+
+    auto handle = create_screenshot_handle();
+    auto& infos = _screenshots[handle];
+    infos.screenshot_name = buff;
+
+    return handle;
 }
 
 
@@ -41,6 +92,16 @@ ScreenshotHandle Steam_Screenshots::AddScreenshotToLibrary( const char *pchFilen
 void Steam_Screenshots::TriggerScreenshot()
 {
     PRINT_DEBUG("TriggerScreenshot\n");
+
+    if (hooked)
+    {
+        ScreenshotRequested_t data;
+        callbacks->addCBResult(data.k_iCallback, &data, sizeof(data));
+    }
+    else
+    {
+        PRINT_DEBUG("TODO: Make the overlay take a screenshot");
+    }
 }
 
 
@@ -58,7 +119,15 @@ void Steam_Screenshots::HookScreenshots( bool bHook )
 bool Steam_Screenshots::SetLocation( ScreenshotHandle hScreenshot, const char *pchLocation )
 {
     PRINT_DEBUG("SetLocation\n");
+    
+    auto it = _screenshots.find(hScreenshot);
+    if (it == _screenshots.end())
         return false;
+
+    it->second.metadatas["locations"].push_back(pchLocation);
+    local_storage->write_json_file(Local_Storage::screenshots_folder, it->second.screenshot_name + ".json", it->second.metadatas);
+
+    return true;
 }
 
 
@@ -66,7 +135,15 @@ bool Steam_Screenshots::SetLocation( ScreenshotHandle hScreenshot, const char *p
 bool Steam_Screenshots::TagUser( ScreenshotHandle hScreenshot, CSteamID steamID )
 {
     PRINT_DEBUG("TagUser\n");
+    
+    auto it = _screenshots.find(hScreenshot);
+    if (it == _screenshots.end())
         return false;
+
+    it->second.metadatas["users"].push_back(uint64_t(steamID.ConvertToUint64()));
+    local_storage->write_json_file(Local_Storage::screenshots_folder, it->second.screenshot_name + ".json", it->second.metadatas);
+
+    return true;
 }
 
 
@@ -74,7 +151,15 @@ bool Steam_Screenshots::TagUser( ScreenshotHandle hScreenshot, CSteamID steamID
 bool Steam_Screenshots::TagPublishedFile( ScreenshotHandle hScreenshot, PublishedFileId_t unPublishedFileID )
 {
     PRINT_DEBUG("TagPublishedFile\n");
+    
+    auto it = _screenshots.find(hScreenshot);
+    if (it == _screenshots.end())
         return false;
+
+    it->second.metadatas["published_files"].push_back(uint64_t(unPublishedFileID));
+    local_storage->write_json_file(Local_Storage::screenshots_folder, it->second.screenshot_name + ".json", it->second.metadatas);
+
+    return true;
 }
 
 

dll/steam_screenshots.h

@@ -17,10 +17,25 @@
 
 #include "base.h"
 
+struct screenshot_infos_t
+{
+	std::string screenshot_name;
+	nlohmann::json metadatas;
+};
+
 class Steam_Screenshots : public ISteamScreenshots
 {
     bool hooked = false;
+	std::map<ScreenshotHandle, screenshot_infos_t> _screenshots;
+
+	class Local_Storage* local_storage;
+	class SteamCallBacks* callbacks;
+
+	ScreenshotHandle create_screenshot_handle();
+
 public:
+	Steam_Screenshots(class Local_Storage* local_storage, class SteamCallBacks* callbacks);
+
 	// Writes a screenshot to the user's screenshot library given the raw image data, which must be in RGB format.
 	// The return value is a handle that is valid for the duration of the game process and can be used to apply tags.
 	ScreenshotHandle WriteScreenshot( void *pubRGB, uint32 cubRGB, int nWidth, int nHeight );