mirror of
https://github.com/libretro/RetroArch.git
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b974fa5718
The new environment RETRO_ENVIRONMENT_SET_SERIALIZATION_QUIRKS allows cores to communicate any quirks their implementation of serialization may exhibit. This is useful for distinguishing between serialization implementations that are sufficient for netplay, rewind, regular use, etc, as each of these have different requirements and it should be possible to support a "good enough" serialization without breaking frontend features.
487 lines
11 KiB
C
487 lines
11 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2016 - Daniel De Matteis
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* Copyright (C) 2012-2015 - Michael Lelli
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <retro_inline.h>
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#include <boolean.h>
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#include <lists/string_list.h>
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#include <libretro.h>
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_NETWORKING
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#include "network/netplay/netplay.h"
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#endif
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#include "configuration.h"
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#include "dynamic.h"
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#include "core.h"
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#include "msg_hash.h"
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#include "managers/state_manager.h"
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#include "runloop.h"
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#include "verbosity.h"
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#include "gfx/video_driver.h"
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#include "audio/audio_driver.h"
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static struct retro_core_t core;
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static unsigned core_poll_type;
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static bool core_inited = false;
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static bool core_symbols_inited = false;
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static bool core_game_loaded = false;
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static bool core_input_polled = false;
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static bool core_has_set_input_descriptors = false;
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static struct retro_callbacks retro_ctx;
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static void core_input_state_poll_maybe(void)
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{
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if (core_poll_type == POLL_TYPE_NORMAL)
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input_poll();
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}
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static int16_t core_input_state_poll(unsigned port,
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unsigned device, unsigned idx, unsigned id)
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{
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if (core_poll_type == POLL_TYPE_LATE)
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{
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if (!core_input_polled)
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input_poll();
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core_input_polled = true;
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}
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return input_state(port, device, idx, id);
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}
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void core_set_input_state(retro_ctx_input_state_info_t *info)
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{
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core.retro_set_input_state(info->cb);
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}
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/**
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* core_init_libretro_cbs:
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* @data : pointer to retro_callbacks object
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*
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* Initializes libretro callbacks, and binds the libretro callbacks
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* to default callback functions.
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**/
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static bool core_init_libretro_cbs(void *data)
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{
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struct retro_callbacks *cbs = (struct retro_callbacks*)data;
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if (!cbs)
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return false;
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core.retro_set_video_refresh(video_driver_frame);
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core.retro_set_audio_sample(audio_driver_sample);
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core.retro_set_audio_sample_batch(audio_driver_sample_batch);
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core.retro_set_input_state(core_input_state_poll);
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core.retro_set_input_poll(core_input_state_poll_maybe);
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core_set_default_callbacks(cbs);
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#ifdef HAVE_NETWORKING
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if (!netplay_driver_ctl(RARCH_NETPLAY_CTL_IS_DATA_INITED, NULL))
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return true;
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core_set_netplay_callbacks();
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#endif
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return true;
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}
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/**
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* core_set_default_callbacks:
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* @data : pointer to retro_callbacks object
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*
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* Binds the libretro callbacks to default callback functions.
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**/
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bool core_set_default_callbacks(void *data)
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{
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struct retro_callbacks *cbs = (struct retro_callbacks*)data;
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if (!cbs)
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return false;
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cbs->frame_cb = video_driver_frame;
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cbs->sample_cb = audio_driver_sample;
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cbs->sample_batch_cb = audio_driver_sample_batch;
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cbs->state_cb = core_input_state_poll;
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cbs->poll_cb = input_poll;
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return true;
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}
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bool core_deinit(void *data)
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{
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struct retro_callbacks *cbs = (struct retro_callbacks*)data;
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if (!cbs)
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return false;
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cbs->frame_cb = NULL;
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cbs->sample_cb = NULL;
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cbs->sample_batch_cb = NULL;
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cbs->state_cb = NULL;
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cbs->poll_cb = NULL;
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core_inited = false;
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return true;
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}
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bool core_uninit_libretro_callbacks(void)
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{
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return core_deinit(&retro_ctx);
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}
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/**
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* core_set_rewind_callbacks:
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*
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* Sets the audio sampling callbacks based on whether or not
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* rewinding is currently activated.
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**/
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bool core_set_rewind_callbacks(void)
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{
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if (state_manager_frame_is_reversed())
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{
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core.retro_set_audio_sample(audio_driver_sample_rewind);
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core.retro_set_audio_sample_batch(audio_driver_sample_batch_rewind);
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}
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else
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{
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core.retro_set_audio_sample(audio_driver_sample);
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core.retro_set_audio_sample_batch(audio_driver_sample_batch);
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}
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return true;
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}
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#ifdef HAVE_NETWORKING
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/**
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* core_set_netplay_callbacks:
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*
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* Set the I/O callbacks to use netplay's interceding callback system. Should
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* only be called once.
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**/
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bool core_set_netplay_callbacks(void)
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{
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/* Force normal poll type for netplay. */
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core_poll_type = POLL_TYPE_NORMAL;
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/* And use netplay's interceding callbacks */
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core.retro_set_video_refresh(video_frame_net);
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core.retro_set_audio_sample(audio_sample_net);
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core.retro_set_audio_sample_batch(audio_sample_batch_net);
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core.retro_set_input_state(input_state_net);
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return true;
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}
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#endif
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bool core_set_cheat(retro_ctx_cheat_info_t *info)
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{
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core.retro_cheat_set(info->index, info->enabled, info->code);
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return true;
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}
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bool core_reset_cheat(void)
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{
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core.retro_cheat_reset();
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return true;
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}
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bool core_api_version(retro_ctx_api_info_t *api)
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{
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if (!api)
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return false;
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api->version = core.retro_api_version();
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return true;
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}
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bool core_set_poll_type(unsigned *type)
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{
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core_poll_type = *type;
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return true;
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}
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void core_uninit_symbols(void)
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{
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uninit_libretro_sym(&core);
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core_symbols_inited = false;
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}
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bool core_init_symbols(enum rarch_core_type *type)
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{
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if (!type)
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return false;
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init_libretro_sym(*type, &core);
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core_symbols_inited = true;
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return true;
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}
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bool core_set_controller_port_device(retro_ctx_controller_info_t *pad)
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{
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if (!pad)
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return false;
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core.retro_set_controller_port_device(pad->port, pad->device);
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return true;
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}
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bool core_get_memory(retro_ctx_memory_info_t *info)
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{
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if (!info)
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return false;
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info->size = core.retro_get_memory_size(info->id);
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info->data = core.retro_get_memory_data(info->id);
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return true;
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}
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bool core_load_game(retro_ctx_load_content_info_t *load_info)
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{
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if (load_info && load_info->special)
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core_game_loaded = core.retro_load_game_special(
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load_info->special->id, load_info->info, load_info->content->size);
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else if (load_info && *load_info->content->elems[0].data)
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core_game_loaded = core.retro_load_game(load_info->info);
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else
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core_game_loaded = core.retro_load_game(NULL);
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return core_game_loaded;
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}
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bool core_get_system_info(struct retro_system_info *system)
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{
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if (!system)
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return false;
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core.retro_get_system_info(system);
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return true;
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}
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bool core_unserialize(retro_ctx_serialize_info_t *info)
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{
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if (!info)
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return false;
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if (!core.retro_unserialize(info->data_const, info->size))
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return false;
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#if HAVE_NETWORKING
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netplay_driver_ctl(RARCH_NETPLAY_CTL_LOAD_SAVESTATE, info);
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#endif
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return true;
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}
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uint32_t core_serialize_quirks(void)
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{
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uint32_t ret = 0;
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rarch_environment_cb(RETRO_ENVIRONMENT_SET_SERIALIZATION_QUIRKS, &ret);
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return ret;
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}
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bool core_serialize(retro_ctx_serialize_info_t *info)
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{
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if (!info)
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return false;
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if (!core.retro_serialize(info->data, info->size))
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return false;
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return true;
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}
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bool core_serialize_size(retro_ctx_size_info_t *info)
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{
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if (!info)
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return false;
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info->size = core.retro_serialize_size();
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return true;
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}
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bool core_frame(retro_ctx_frame_info_t *info)
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{
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if (!info || !retro_ctx.frame_cb)
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return false;
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retro_ctx.frame_cb(
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info->data, info->width, info->height, info->pitch);
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return true;
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}
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bool core_poll(void)
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{
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if (!retro_ctx.poll_cb)
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return false;
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retro_ctx.poll_cb();
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return true;
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}
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bool core_set_environment(retro_ctx_environ_info_t *info)
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{
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if (!info)
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return false;
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core.retro_set_environment(info->env);
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return true;
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}
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bool core_get_system_av_info(struct retro_system_av_info *av_info)
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{
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if (!av_info)
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return false;
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core.retro_get_system_av_info(av_info);
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return true;
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}
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bool core_reset(void)
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{
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core.retro_reset();
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return true;
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}
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bool core_init(void)
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{
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core.retro_init();
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core_inited = true;
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return true;
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}
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bool core_unload(void)
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{
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core.retro_deinit();
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return true;
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}
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bool core_unload_game(void)
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{
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video_driver_deinit_hw_context();
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audio_driver_stop();
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core.retro_unload_game();
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core_game_loaded = false;
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return true;
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}
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bool core_run(void)
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{
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#ifdef HAVE_NETWORKING
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if (!netplay_driver_ctl(RARCH_NETPLAY_CTL_PRE_FRAME, NULL))
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{
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/* Paused due to Netplay */
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return true;
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}
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#endif
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switch (core_poll_type)
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{
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case POLL_TYPE_EARLY:
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input_poll();
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break;
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case POLL_TYPE_LATE:
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core_input_polled = false;
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break;
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default:
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break;
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}
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if (core.retro_run)
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core.retro_run();
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if (core_poll_type == POLL_TYPE_LATE && !core_input_polled)
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input_poll();
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#ifdef HAVE_NETWORKING
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netplay_driver_ctl(RARCH_NETPLAY_CTL_POST_FRAME, NULL);
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#endif
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return true;
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}
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bool core_load(void)
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{
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settings_t *settings = config_get_ptr();
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core_poll_type = settings->input.poll_type_behavior;
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if (!core_verify_api_version())
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return false;
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if (!core_init_libretro_cbs(&retro_ctx))
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return false;
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core_get_system_av_info(video_viewport_get_system_av_info());
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runloop_ctl(RUNLOOP_CTL_SET_FRAME_LIMIT, NULL);
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return true;
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}
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bool core_verify_api_version(void)
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{
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unsigned api_version = core.retro_api_version();
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RARCH_LOG("%s: %u\n",
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msg_hash_to_str(MSG_VERSION_OF_LIBRETRO_API),
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api_version);
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RARCH_LOG("%s: %u\n",
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msg_hash_to_str(MSG_COMPILED_AGAINST_API),
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RETRO_API_VERSION);
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if (api_version != RETRO_API_VERSION)
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{
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RARCH_WARN("%s\n", msg_hash_to_str(MSG_LIBRETRO_ABI_BREAK));
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return false;
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}
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return true;
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}
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bool core_get_region(retro_ctx_region_info_t *info)
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{
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if (!info)
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return false;
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info->region = core.retro_get_region();
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return true;
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}
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bool core_has_set_input_descriptor(void)
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{
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return core_has_set_input_descriptors;
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}
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void core_set_input_descriptors(void)
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{
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core_has_set_input_descriptors = true;
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}
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void core_unset_input_descriptors(void)
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{
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core_has_set_input_descriptors = false;
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}
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bool core_is_inited(void)
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{
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return core_inited;
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}
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bool core_is_symbols_inited(void)
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{
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return core_symbols_inited;
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}
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bool core_is_game_loaded(void)
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{
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return core_game_loaded;
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}
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