mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
partially revived platform support for PSP (unfinished)
just to have a platform with an unusal screen resolution - suspend/resume handling probably non-working - no scaling settings - no image generation currently no intentions to finish this.
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kub
parent
f821bb7011
commit
cdc6aac4c0
17 changed files with 961 additions and 2468 deletions
214
platform/psp/in_psp.c
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214
platform/psp/in_psp.c
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/*
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* (C) Gražvydas "notaz" Ignotas, 2006-2012
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* (C) kub 2020
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*
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* This work is licensed under the terms of any of these licenses
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* (at your option):
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* - GNU GPL, version 2 or later.
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* - GNU LGPL, version 2.1 or later.
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* - MAME license.
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* See the COPYING file in the top-level directory.
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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 <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "../libpicofe/input.h"
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#include "psp.h"
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#include "in_psp.h"
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#define IN_PSP_PREFIX "psp:"
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#define IN_PSP_NBUTTONS 32
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/* note: in_psp handles combos (if 2 btns have the same bind,
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* both must be pressed for action to happen) */
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static int in_psp_combo_keys = 0;
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static int in_psp_combo_acts = 0;
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static const char *in_psp_keys[IN_PSP_NBUTTONS] = {
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[0 ... IN_PSP_NBUTTONS-1] = NULL,
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};
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/* credits to https://graphics.stanford.edu/~seander/bithacks.html */
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static int lg2(unsigned v)
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{
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int r, s;
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r = (v > 0xFFFF) << 4; v >>= r;
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s = (v > 0xFF ) << 3; v >>= s; r |= s;
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s = (v > 0xF ) << 2; v >>= s; r |= s;
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s = (v > 0x3 ) << 1; v >>= s; r |= s;
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r |= (v >> 1);
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return r;
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}
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static int in_psp_get_bits(void)
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{
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return psp_pad_read(0);
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}
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static void in_psp_probe(const in_drv_t *drv)
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{
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in_register(IN_PSP_PREFIX "PSP pad", -1, NULL,
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IN_PSP_NBUTTONS, in_psp_keys, 1);
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}
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static void in_psp_free(void *drv_data)
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{
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}
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static const char * const *
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in_psp_get_key_names(const in_drv_t *drv, int *count)
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{
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*count = IN_PSP_NBUTTONS;
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return in_psp_keys;
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}
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/* ORs result with pressed buttons */
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static int in_psp_update(void *drv_data, const int *binds, int *result)
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{
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int type_start = 0;
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int i, t, keys;
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keys = in_psp_get_bits();
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if (keys & in_psp_combo_keys) {
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result[IN_BINDTYPE_EMU] = in_combos_do(keys, binds, IN_PSP_NBUTTONS,
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in_psp_combo_keys, in_psp_combo_acts);
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type_start = IN_BINDTYPE_PLAYER12;
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}
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for (i = 0; keys; i++, keys >>= 1) {
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if (!(keys & 1))
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continue;
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for (t = type_start; t < IN_BINDTYPE_COUNT; t++)
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result[t] |= binds[IN_BIND_OFFS(i, t)];
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}
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return 0;
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}
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int in_psp_update_keycode(void *data, int *is_down)
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{
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static int old_val = 0;
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int val, diff, i;
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val = in_psp_get_bits();
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diff = val ^ old_val;
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if (diff == 0)
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return -1;
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/* take one bit only */
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for (i = 0; i < sizeof(diff)*8; i++)
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if (diff & (1<<i))
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break;
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old_val ^= 1 << i;
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if (is_down)
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*is_down = !!(val & (1<<i));
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return i;
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}
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static const struct {
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short key;
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short pbtn;
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} key_pbtn_map[] =
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{
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{ PSP_CTRL_UP, PBTN_UP },
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{ PSP_CTRL_DOWN, PBTN_DOWN },
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{ PSP_CTRL_LEFT, PBTN_LEFT },
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{ PSP_CTRL_RIGHT, PBTN_RIGHT },
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{ PSP_CTRL_CIRCLE, PBTN_MOK },
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{ PSP_CTRL_CROSS, PBTN_MBACK },
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{ PSP_CTRL_TRIANGLE, PBTN_MA2 },
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{ PSP_CTRL_SQUARE, PBTN_MA3 },
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{ PSP_CTRL_LTRIGGER, PBTN_L },
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{ PSP_CTRL_RTRIGGER, PBTN_R },
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{ PSP_CTRL_SELECT, PBTN_MENU },
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};
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#define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0]))
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static int in_psp_menu_translate(void *drv_data, int keycode, char *charcode)
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{
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int i;
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if (keycode < 0)
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{
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/* menu -> kc */
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keycode = -keycode;
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for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
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if (key_pbtn_map[i].pbtn == keycode)
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return lg2(key_pbtn_map[i].key);
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}
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else
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{
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for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
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if (key_pbtn_map[i].key == 1<<keycode)
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return key_pbtn_map[i].pbtn;
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}
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return 0;
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}
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/* remove binds of missing keys, count remaining ones */
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static int in_psp_clean_binds(void *drv_data, int *binds, int *def_binds)
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{
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int i, count = 0;
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for (i = 0; i < IN_PSP_NBUTTONS; i++) {
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int t, offs;
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for (t = 0; t < IN_BINDTYPE_COUNT; t++) {
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offs = IN_BIND_OFFS(i, t);
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if (in_psp_keys[i] == NULL)
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binds[offs] = def_binds[offs] = 0;
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if (binds[offs])
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count++;
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}
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}
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in_combos_find(binds, IN_PSP_NBUTTONS, &in_psp_combo_keys, &in_psp_combo_acts);
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return count;
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}
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static const in_drv_t in_psp_drv = {
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.prefix = IN_PSP_PREFIX,
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.probe = in_psp_probe,
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.free = in_psp_free,
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.get_key_names = in_psp_get_key_names,
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.clean_binds = in_psp_clean_binds,
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.update = in_psp_update,
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.update_keycode = in_psp_update_keycode,
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.menu_translate = in_psp_menu_translate,
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};
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void in_psp_init(const struct in_default_bind *defbinds)
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{
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in_psp_combo_keys = in_psp_combo_acts = 0;
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/* fill keys array, converting key bitmasks to indexes */
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in_psp_keys[lg2(PSP_CTRL_UP)] = "Up";
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in_psp_keys[lg2(PSP_CTRL_LEFT)] = "Left";
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in_psp_keys[lg2(PSP_CTRL_DOWN)] = "Down";
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in_psp_keys[lg2(PSP_CTRL_RIGHT)] = "Right";
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in_psp_keys[lg2(PSP_CTRL_START)] = "Start";
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in_psp_keys[lg2(PSP_CTRL_SELECT)] = "Select";
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in_psp_keys[lg2(PSP_CTRL_LTRIGGER)] = "L";
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in_psp_keys[lg2(PSP_CTRL_RTRIGGER)] = "R";
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in_psp_keys[lg2(PSP_CTRL_TRIANGLE)] = "Triangle";
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in_psp_keys[lg2(PSP_CTRL_CIRCLE)] = "Circle";
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in_psp_keys[lg2(PSP_CTRL_CROSS)] = "Cross";
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in_psp_keys[lg2(PSP_CTRL_SQUARE)] = "Square";
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in_register_driver(&in_psp_drv, defbinds, NULL);
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}
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