mirror of
https://github.com/libretro/RetroArch.git
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455 lines
10 KiB
C
455 lines
10 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_NETPLAY
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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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#ifdef HAVE_NETPLAY
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global_t *global = global_get_ptr();
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#endif
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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_NETPLAY
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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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/* Force normal poll type for netplay. */
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core_poll_type = POLL_TYPE_NORMAL;
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if (global->netplay.is_spectate)
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{
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core.retro_set_input_state(
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(global->netplay.is_client ?
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input_state_spectate_client : input_state_spectate)
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);
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}
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else
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{
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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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}
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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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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)
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return false;
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if (load_info->special)
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core_game_loaded = core.retro_load_game_special(load_info->special->id, load_info->info, load_info->content->size);
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else
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core_game_loaded = core.retro_load_game(*load_info->content->elems[0].data ? load_info->info : 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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return true;
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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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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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}
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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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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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