mirror of
https://github.com/libretro/RetroArch
synced 2025-01-16 16:29:28 +00:00
432b320775
* RunAhead: Remove Environment Hook from primary core * Modify core option manager to trigger setting the secondary core's dirty environment flag * RunAhead: Make secondary core's hook support that change, so it can turn off the dirty environment flag after reading a setting.
400 lines
9.9 KiB
C
400 lines
9.9 KiB
C
#if defined(HAVE_DYNAMIC) || defined(HAVE_DYLIB)
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#include <string.h>
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#include <time.h>
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#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500 || defined(_XBOX)
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#ifndef LEGACY_WIN32
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#define LEGACY_WIN32
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#endif
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#endif
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#include <boolean.h>
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#include <encodings/utf.h>
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#include <dynamic/dylib.h>
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#include <file/file_path.h>
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#include <streams/file_stream.h>
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#include "mem_util.h"
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#include "../core.h"
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#include "../dynamic.h"
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#include "../paths.h"
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#include "../content.h"
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#include "secondary_core.h"
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static int port_map[16];
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static char *secondary_library_path;
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static dylib_t secondary_module;
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static struct retro_core_t secondary_core;
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static struct retro_callbacks secondary_callbacks;
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extern retro_ctx_load_content_info_t *load_content_info;
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extern enum rarch_core_type last_core_type;
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extern struct retro_callbacks retro_ctx;
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static char* get_temp_directory_alloc(void);
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static char* copy_core_to_temp_file(void);
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static bool write_file_with_random_name(char **tempDllPath,
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const char *retroarchTempPath, const void* data, ssize_t dataSize);
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static bool secondary_core_create(void);
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bool secondary_core_run_no_input_polling(void);
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bool secondary_core_deserialize(const void *buffer, int size);
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static bool rarch_environment_secondary_core_hook(unsigned cmd, void *data);
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void secondary_core_destroy(void);
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void set_last_core_type(enum rarch_core_type type);
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void remember_controller_port_device(long port, long device);
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void clear_controller_port_map(void);
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char* get_temp_directory_alloc(void)
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{
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#ifdef _WIN32
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#ifdef LEGACY_WIN32
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DWORD pathLength = GetTempPath(0, NULL) + 1;
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char *path = (char*)malloc(pathLength * sizeof(char));
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path[pathLength - 1] = 0;
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GetTempPath(pathLength, path);
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return path;
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#else
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char *path;
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DWORD pathLength = GetTempPathW(0, NULL) + 1;
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wchar_t *wideStr = (wchar_t*)malloc(pathLength * sizeof(wchar_t));
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wideStr[pathLength - 1] = 0;
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GetTempPathW(pathLength, wideStr);
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path = utf16_to_utf8_string_alloc(wideStr);
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free(wideStr);
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return path;
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#endif
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#else
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char *path = strcpy_alloc_force(getenv("TMPDIR"));
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return path;
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#endif
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}
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char* copy_core_to_temp_file(void)
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{
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char *tempDirectory = NULL;
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char *retroarchTempPath = NULL;
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char *tempDllPath = NULL;
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void *dllFileData = NULL;
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int64_t dllFileSize = 0;
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const char *corePath = path_get(RARCH_PATH_CORE);
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const char *coreBaseName = path_basename(corePath);
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if (strlen(coreBaseName) == 0)
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goto failed;
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tempDirectory = get_temp_directory_alloc();
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if (!tempDirectory)
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goto failed;
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strcat_alloc(&retroarchTempPath, tempDirectory);
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strcat_alloc(&retroarchTempPath, path_default_slash());
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strcat_alloc(&retroarchTempPath, "retroarch_temp");
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strcat_alloc(&retroarchTempPath, path_default_slash());
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if (!path_mkdir(retroarchTempPath))
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goto failed;
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if (!filestream_read_file(corePath, &dllFileData, &dllFileSize))
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goto failed;
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strcat_alloc(&tempDllPath, retroarchTempPath);
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strcat_alloc(&tempDllPath, coreBaseName);
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if (!filestream_write_file(tempDllPath, dllFileData, dllFileSize))
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{
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/* try other file names */
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if (!write_file_with_random_name(&tempDllPath, retroarchTempPath, dllFileData, dllFileSize))
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goto failed;
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}
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FREE(tempDirectory);
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FREE(retroarchTempPath);
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FREE(dllFileData);
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return tempDllPath;
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failed:
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FREE(tempDirectory);
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FREE(retroarchTempPath);
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FREE(tempDllPath);
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FREE(dllFileData);
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return NULL;
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}
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bool write_file_with_random_name(char **tempDllPath,
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const char *retroarchTempPath, const void* data, ssize_t dataSize)
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{
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bool okay = false;
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unsigned i;
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char number_buf[32];
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const char *prefix = "tmp";
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time_t time_value = time(NULL);
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unsigned int number_value= (unsigned int)time_value;
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int number = 0;
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char *ext = strcpy_alloc_force(path_get_extension(*tempDllPath));
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int ext_len = (int)strlen(ext);
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if (ext_len > 0)
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{
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strcat_alloc(&ext, ".");
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memmove(ext + 1, ext, ext_len);
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ext[0] = '.';
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ext_len++;
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}
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/* Try up to 30 'random' filenames before giving up */
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for (i = 0; i < 30; i++)
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{
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number_value = number_value * 214013 + 2531011;
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number = (number_value >> 14) % 100000;
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snprintf(number_buf, sizeof(number_buf), "%05d", number);
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FREE(*tempDllPath);
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strcat_alloc(tempDllPath, retroarchTempPath);
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strcat_alloc(tempDllPath, prefix);
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strcat_alloc(tempDllPath, number_buf);
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strcat_alloc(tempDllPath, ext);
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if (filestream_write_file(*tempDllPath, data, dataSize))
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{
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okay = true;
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break;
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}
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}
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FREE(ext);
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return okay;
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}
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bool secondary_core_create(void)
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{
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long port, device;
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bool contentless, is_inited;
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if ( last_core_type != CORE_TYPE_PLAIN ||
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!load_content_info ||
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load_content_info->special)
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return false;
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FREE(secondary_library_path);
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secondary_library_path = copy_core_to_temp_file();
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if (!secondary_library_path)
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return false;
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/* Load Core */
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if (init_libretro_sym_custom(CORE_TYPE_PLAIN, &secondary_core, secondary_library_path, &secondary_module))
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{
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secondary_core.symbols_inited = true;
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secondary_core.retro_set_environment(rarch_environment_secondary_core_hook);
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secondary_core_set_variable_update();
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secondary_core.retro_init();
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content_get_status(&contentless, &is_inited);
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secondary_core.inited = is_inited;
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/* Load Content */
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if (!load_content_info || load_content_info->special)
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{
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/* disabled due to crashes */
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return false;
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#if 0
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secondary_core.game_loaded = secondary_core.retro_load_game_special(
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loadContentInfo.special->id, loadContentInfo.info, loadContentInfo.content->size);
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if (!secondary_core.game_loaded)
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{
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secondary_core_destroy();
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return false;
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}
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#endif
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}
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else if (load_content_info->content->size > 0 && load_content_info->content->elems[0].data)
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{
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secondary_core.game_loaded = secondary_core.retro_load_game(load_content_info->info);
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if (!secondary_core.game_loaded)
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{
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secondary_core_destroy();
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return false;
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}
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}
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else if (contentless)
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{
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secondary_core.game_loaded = secondary_core.retro_load_game(NULL);
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if (!secondary_core.game_loaded)
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{
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secondary_core_destroy();
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return false;
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}
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}
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else
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{
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secondary_core.game_loaded = false;
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}
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if (!secondary_core.inited)
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{
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secondary_core_destroy();
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return false;
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}
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core_set_default_callbacks(&secondary_callbacks);
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secondary_core.retro_set_video_refresh(secondary_callbacks.frame_cb);
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secondary_core.retro_set_audio_sample(secondary_callbacks.sample_cb);
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secondary_core.retro_set_audio_sample_batch(secondary_callbacks.sample_batch_cb);
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secondary_core.retro_set_input_state(secondary_callbacks.state_cb);
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secondary_core.retro_set_input_poll(secondary_callbacks.poll_cb);
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for (port = 0; port < 16; port++)
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{
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device = port_map[port];
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if (device >= 0)
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secondary_core.retro_set_controller_port_device((unsigned)port, (unsigned)device);
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}
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clear_controller_port_map();
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}
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else
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return false;
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return true;
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}
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static bool has_variable_update;
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static bool rarch_environment_secondary_core_hook(unsigned cmd, void *data)
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{
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bool result = rarch_environment_cb(cmd, data);
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if (has_variable_update)
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{
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if (cmd == RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE)
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{
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bool *bool_p = (bool*)data;
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*bool_p = true;
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has_variable_update = false;
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return true;
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}
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else if (cmd == RETRO_ENVIRONMENT_GET_VARIABLE)
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{
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has_variable_update = false;
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}
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}
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return result;
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}
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void secondary_core_set_variable_update(void)
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{
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has_variable_update = true;
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}
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bool secondary_core_run_no_input_polling(void)
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{
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if (secondary_core_ensure_exists())
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{
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secondary_core.retro_run();
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return true;
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}
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return false;
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}
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bool secondary_core_deserialize(const void *buffer, int size)
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{
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if (secondary_core_ensure_exists())
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{
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return secondary_core.retro_unserialize(buffer, size);
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}
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return false;
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}
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bool secondary_core_ensure_exists(void)
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{
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if (!secondary_module)
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{
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if (!secondary_core_create())
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{
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secondary_core_destroy();
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return false;
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}
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}
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return true;
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}
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void secondary_core_destroy(void)
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{
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if (secondary_module)
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{
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/* unload game from core */
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if (secondary_core.retro_unload_game)
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secondary_core.retro_unload_game();
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/* deinit */
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if (secondary_core.retro_deinit)
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secondary_core.retro_deinit();
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memset(&secondary_core, 0, sizeof(struct retro_core_t));
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dylib_close(secondary_module);
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secondary_module = NULL;
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filestream_delete(secondary_library_path);
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FREE(secondary_library_path);
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}
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}
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void remember_controller_port_device(long port, long device)
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{
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if (port >= 0 && port < 16)
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port_map[port] = (int)device;
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if (secondary_module && secondary_core.retro_set_controller_port_device)
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secondary_core.retro_set_controller_port_device((unsigned)port, (unsigned)device);
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}
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void clear_controller_port_map(void)
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{
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unsigned port;
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for (port = 0; port < 16; port++)
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port_map[port] = -1;
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}
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#else
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#include <boolean.h>
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#include "../core.h"
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bool secondary_core_run_no_input_polling(void)
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{
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return false;
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}
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bool secondary_core_deserialize(const void *buffer, int size)
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{
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return false;
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}
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void secondary_core_destroy(void)
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{
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/* do nothing */
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}
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void remember_controller_port_device(long port, long device)
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{
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/* do nothing */
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}
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void secondary_core_set_variable_update(void)
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{
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/* do nothing */
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}
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void clear_controller_port_map(void)
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{
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/* do nothing */
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}
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#endif
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