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RetroArch/cores/retropad/retropad.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
* Copyright (C) 2016 - Andrés Suárez
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
/*
* To-do:
* - Analog support
* - Some sort of connection control, it only sends packets
* but there is no acknoledgement of a connection o keepalives
* - Send player name
* - Render something on-screen maybe a gui to configure IP and port
instead of the ridiculously long strings we're using now
* - Allow changing IP address and port in runtime
* - Support other platforms
* - Input recording / Combos
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <math.h>
#include <net/net_compat.h>
#include <net/net_socket.h>
#include <retro_miscellaneous.h>
#include <libretro.h>
#ifndef SOCKET_ERROR
#define SOCKET_ERROR -1
#endif
int s;
int port;
char message[64];
char server[64];
struct sockaddr_in si_other;
struct retro_log_callback logger;
retro_log_printf_t log_cb;
static uint16_t *frame_buf;
int input_state = 0;
void retro_init(void)
{
frame_buf = (uint16_t*)calloc(320 * 240, sizeof(uint16_t));
log_cb(RETRO_LOG_INFO, "Initialising sockets...\n");
network_init();
}
void retro_deinit(void)
{
if (frame_buf)
free(frame_buf);
frame_buf = NULL;
}
unsigned retro_api_version(void)
{
return RETRO_API_VERSION;
}
void retro_set_controller_port_device(
unsigned port, unsigned device)
{
(void)port;
(void)device;
}
void retro_get_system_info(
struct retro_system_info *info)
{
memset(info, 0, sizeof(*info));
info->library_name = "RetroPad Remote";
info->library_version = "0.01";
info->need_fullpath = false;
info->valid_extensions = ""; /* Nothing. */
}
void retro_get_system_av_info(
struct retro_system_av_info *info)
{
info->timing.fps = 60.0;
info->timing.sample_rate = 30000.0;
info->geometry.base_width = 320;
info->geometry.base_height = 240;
info->geometry.max_width = 320;
info->geometry.max_height = 240;
info->geometry.aspect_ratio = 4.0 / 3.0;
}
static retro_video_refresh_t video_cb;
static retro_audio_sample_t audio_cb;
static retro_audio_sample_batch_t audio_batch_cb;
static retro_environment_t environ_cb;
static retro_input_poll_t input_poll_cb;
static retro_input_state_t input_state_cb;
void update_input()
{
input_state = 0;
input_poll_cb();
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B))
input_state += 1;
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A))
input_state += 2;
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT))
input_state += pow(2, 2);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START))
input_state += pow(2, 3);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP))
input_state += pow(2, 4);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN))
input_state += pow(2, 5);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT))
input_state += pow(2, 6);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT))
input_state += pow(2, 7);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y))
input_state += pow(2, 8);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X))
input_state += pow(2, 9);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L))
input_state += pow(2, 10);
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R))
input_state += pow(2, 11);
}
void retro_set_environment(retro_environment_t cb)
{
static const struct retro_variable vars[] = {
{ "port", "Port; 55400|55401|55402|55403|55404|55405|55406|55407|55408|55409|55410|55411|55412|55413|55414|55415|55416|55417|55418|55419|55420" },
{ "ip_octet1", "IP address part 1; 0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31|32|33|35|35|36|37|38|39|40|41|42|43|44|45|46|47|48|49|50|51|52|53|54|55|56|57|58|59|60|61|62|63|64|65|66|67|68|69|70|71|72|73|74|75|76|77|78|79|80|81|82|83|84|85|86|87|88|89|90|91|92|93|94|95|96|97|98|99|100|101|102|103|104|105|106|107|108|109|110|111|112|113|114|115|116|117|118|119|120|121|122|123|124|125|126|127|128|129|130|131|132|133|135|135|136|137|138|139|140|141|142|143|144|145|146|147|148|149|150|151|152|153|154|155|156|157|158|159|160|161|162|163|164|165|166|167|168|169|170|171|172|173|174|175|176|177|178|179|180|181|182|183|184|185|186|187|188|189|190|191|192|193|194|195|196|197|198|199|200|201|202|203|204|205|206|207|208|209|210|211|212|213|214|215|216|217|218|219|220|221|222|223|224|225|226|227|228|229|230|231|232|233|235|235|236|237|238|239|240|241|242|243|244|245|246|247|248|249|250|251|252|253|254|255" },
{ "ip_octet2", "IP address part 2; 0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31|32|33|35|35|36|37|38|39|40|41|42|43|44|45|46|47|48|49|50|51|52|53|54|55|56|57|58|59|60|61|62|63|64|65|66|67|68|69|70|71|72|73|74|75|76|77|78|79|80|81|82|83|84|85|86|87|88|89|90|91|92|93|94|95|96|97|98|99|100|101|102|103|104|105|106|107|108|109|110|111|112|113|114|115|116|117|118|119|120|121|122|123|124|125|126|127|128|129|130|131|132|133|135|135|136|137|138|139|140|141|142|143|144|145|146|147|148|149|150|151|152|153|154|155|156|157|158|159|160|161|162|163|164|165|166|167|168|169|170|171|172|173|174|175|176|177|178|179|180|181|182|183|184|185|186|187|188|189|190|191|192|193|194|195|196|197|198|199|200|201|202|203|204|205|206|207|208|209|210|211|212|213|214|215|216|217|218|219|220|221|222|223|224|225|226|227|228|229|230|231|232|233|235|235|236|237|238|239|240|241|242|243|244|245|246|247|248|249|250|251|252|253|254|255" },
{ "ip_octet3", "IP address part 3; 0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31|32|33|35|35|36|37|38|39|40|41|42|43|44|45|46|47|48|49|50|51|52|53|54|55|56|57|58|59|60|61|62|63|64|65|66|67|68|69|70|71|72|73|74|75|76|77|78|79|80|81|82|83|84|85|86|87|88|89|90|91|92|93|94|95|96|97|98|99|100|101|102|103|104|105|106|107|108|109|110|111|112|113|114|115|116|117|118|119|120|121|122|123|124|125|126|127|128|129|130|131|132|133|135|135|136|137|138|139|140|141|142|143|144|145|146|147|148|149|150|151|152|153|154|155|156|157|158|159|160|161|162|163|164|165|166|167|168|169|170|171|172|173|174|175|176|177|178|179|180|181|182|183|184|185|186|187|188|189|190|191|192|193|194|195|196|197|198|199|200|201|202|203|204|205|206|207|208|209|210|211|212|213|214|215|216|217|218|219|220|221|222|223|224|225|226|227|228|229|230|231|232|233|235|235|236|237|238|239|240|241|242|243|244|245|246|247|248|249|250|251|252|253|254|255" },
{ "ip_octet4", "IP address part 4; 0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31|32|33|35|35|36|37|38|39|40|41|42|43|44|45|46|47|48|49|50|51|52|53|54|55|56|57|58|59|60|61|62|63|64|65|66|67|68|69|70|71|72|73|74|75|76|77|78|79|80|81|82|83|84|85|86|87|88|89|90|91|92|93|94|95|96|97|98|99|100|101|102|103|104|105|106|107|108|109|110|111|112|113|114|115|116|117|118|119|120|121|122|123|124|125|126|127|128|129|130|131|132|133|135|135|136|137|138|139|140|141|142|143|144|145|146|147|148|149|150|151|152|153|154|155|156|157|158|159|160|161|162|163|164|165|166|167|168|169|170|171|172|173|174|175|176|177|178|179|180|181|182|183|184|185|186|187|188|189|190|191|192|193|194|195|196|197|198|199|200|201|202|203|204|205|206|207|208|209|210|211|212|213|214|215|216|217|218|219|220|221|222|223|224|225|226|227|228|229|230|231|232|233|235|235|236|237|238|239|240|241|242|243|244|245|246|247|248|249|250|251|252|253|254|255" },
{ NULL, NULL },
};
cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void*)vars);
enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
environ_cb = cb;
bool no_content = true;
cb(RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME, &no_content);
environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt);
if (cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &logger))
log_cb = logger.log;
}
static void check_variables(void)
{
struct retro_variable var, var2, var3, var4, port_var;
var.key = "ip_octet1";
var2.key = "ip_octet2";
var3.key = "ip_octet3";
var4.key = "ip_octet4";
port_var.key = "port";
environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var);
environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var2);
environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var3);
environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var4);
environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &port_var);
snprintf(server, sizeof(server), "%s.%s.%s.%s", var.value, var2.value, var3.value, var4.value);
port = atoi(port_var.value);
}
void retro_set_audio_sample(retro_audio_sample_t cb)
{
audio_cb = cb;
}
void retro_set_audio_sample_batch(
retro_audio_sample_batch_t cb)
{
audio_batch_cb = cb;
}
void retro_set_input_poll(retro_input_poll_t cb)
{
input_poll_cb = cb;
}
void retro_set_input_state(retro_input_state_t cb)
{
input_state_cb = cb;
}
void retro_set_video_refresh(retro_video_refresh_t cb)
{
video_cb = cb;
}
void retro_reset(void)
{}
void retro_run(void)
{
unsigned i;
update_input();
snprintf(message, sizeof(message), "%d", input_state);
/* send the message */
if (sendto(s, message, strlen(message) , 0 , (struct sockaddr *) &si_other, sizeof(si_other))==-1)
log_cb(RETRO_LOG_INFO, "Error sending data\n");
for (i = 0; i < 320 * 240; i++)
frame_buf[i] = 4 << 5;
video_cb(frame_buf, 320, 240, 640);
}
bool retro_load_game(const struct retro_game_info *info)
{
socket_target_t in_target;
check_variables();
s = socket_create(
"retropad",
SOCKET_DOMAIN_INET,
SOCKET_TYPE_DATAGRAM,
SOCKET_PROTOCOL_UDP);
if (s == SOCKET_ERROR)
log_cb(RETRO_LOG_INFO, "socket failed");
/* setup address structure */
memset((char *) &si_other, 0, sizeof(si_other));
in_target.port = port;
in_target.server = server;
in_target.domain = SOCKET_DOMAIN_INET;
socket_set_target(&si_other, &in_target);
log_cb(RETRO_LOG_INFO, "Server IP Address: %s\n" , server);
return true;
}
void retro_unload_game(void)
{}
unsigned retro_get_region(void)
{
return RETRO_REGION_NTSC;
}
bool retro_load_game_special(unsigned type,
const struct retro_game_info *info, size_t num)
{
(void)type;
(void)info;
(void)num;
return false;
}
size_t retro_serialize_size(void)
{
return 0;
}
bool retro_serialize(void *data, size_t size)
{
(void)data;
(void)size;
return false;
}
bool retro_unserialize(const void *data,
size_t size)
{
(void)data;
(void)size;
return false;
}
void *retro_get_memory_data(unsigned id)
{
(void)id;
return NULL;
}
size_t retro_get_memory_size(unsigned id)
{
(void)id;
return 0;
}
void retro_cheat_reset(void)
{}
void retro_cheat_set(unsigned idx,
bool enabled, const char *code)
{
(void)idx;
(void)enabled;
(void)code;
}
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