mirror of
https://github.com/Pecusx/libretro-atari800.git
synced 2026-05-20 22:33:22 +02:00
Fix first run crashing on Xbox One. Added savestate support. Rewind … (#87)
* Fix first run crashing on Xbox One. * Added savestate support. * Rewind works. Fixes issue #83 and possibly #49. * Added Disc Control menu. Supports Disks, Tapes and M3U files (issue #66). * Added in support for 5200 Super Carts. * Better support for 5200 controller. * Added Paddle support. * Converted Core Options menu to v2. * Moved some core options into submenus. * Added controller mappings for Ports 2-4. * Added options for Dual Stick and Swap Ports. Fixes issue #76. * Joystick/Console now controlled more easily with device type Atari Keyboard. * Added 4 Hi-Res Artifacting modes. Restart does something now. * When core option changed only reboot if necessary. Removed several hardcoded controller binds. Fixed issue #29. Joypad input ignored when virtual keyboard active. * SIO Acceleration now defaults to enabled. Fix for Bounty Bob (5200 & lift fix A800). * Added Atari 800 carts to autodetect DB. * Added more Carts to DB. * Fixed Drive Index not being reset on 'restart'. * Changed Atari Joystick default mappings to something more reasonable.
This commit is contained in:
greenchili2
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/****************************************************************************
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* Caprice32 libretro port
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*
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* Copyright not6 - r-type (2015-2018)
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* Copyright David Colmenero - D_Skywalk (2019-2021)
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* Copyright Daniel De Matteis (2012-2021)
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*
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* Redistribution and use of this code or any derivative works are permitted
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* provided that the following conditions are met:
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*
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* - Redistributions may not be sold, nor may they be used in a commercial
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* product or activity.
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*
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* - Redistributions that are modified from the original source must include the
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* complete source code, including the source code for all components used by a
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* binary built from the modified sources. However, as a special exception, the
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* source code distributed need not include anything that is normally distributed
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* (in either source or binary form) with the major components (compiler, kernel,
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* and so on) of the operating system on which the executable runs, unless that
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* component itself accompanies the executable.
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*
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* - Redistributions must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************************/
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#include <sys/stat.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "retro_utils.h"
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#ifdef VITA
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#include "file/file_path.h"
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#endif
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extern uint8_t* pbGPBuffer;
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// Verify file extension
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bool file_check_extension(const char *filename, const size_t filename_size, const char *ext, const size_t ext_size)
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{
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#ifndef __PS3__
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size_t file_len = strnlen(filename, filename_size);
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size_t ext_len = strnlen(ext, ext_size);
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#else
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size_t file_len = strlen(filename) > filename_size ? filename_size : strlen(filename);
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size_t ext_len = strlen(ext) > ext_size ? ext_size : strlen(ext);
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#endif
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if( ext_len > file_len || file_len >= filename_size - 1)
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return false;
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const char * file_ext = &filename[file_len - ext_len];
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return (strncasecmp(file_ext, ext, filename_size) == 0);
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}
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bool file_check_flag(const char *filename, const size_t filename_size, const char *flag, const size_t flag_size)
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{
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#ifndef __PS3__
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size_t file_len = strnlen(filename, filename_size);
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size_t flag_len = strnlen(flag, flag_size);
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#else
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size_t file_len = strlen(filename) > filename_size ? filename_size : strlen(filename);
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size_t flag_len = strlen(flag) > flag_size ? flag_size : strlen(flag);
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#endif
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for (int i = 0; i < file_len; i++) {
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if (i + flag_len > file_len)
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return false;
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if (strncasecmp(&filename[i], flag, flag_len) == 0)
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return true;
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}
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return false;
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}
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// Verify if file exists
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bool file_exists(const char *filename)
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{
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#ifdef VITA
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if (path_is_valid(filename) && !path_is_directory(filename))
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#else
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struct stat buf;
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if (stat(filename, &buf) == 0 &&
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(buf.st_mode & (S_IRUSR|S_IWUSR)) && !(buf.st_mode & S_IFDIR))
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#endif
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{
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/* file points to user readable regular file */
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return true;
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}
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return false;
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}
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int file_size (int file_num)
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{
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struct stat s;
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if (!fstat(file_num, &s)) {
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return s.st_size;
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} else {
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return 0;
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}
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}
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void path_join(char* out, const char* basedir, const char* filename)
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{
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snprintf(out, RETRO_PATH_MAX, "%s%s%s", basedir, RETRO_PATH_SEPARATOR, filename);
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}
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char* path_join_dup(const char* basedir, const char* filename)
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{
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size_t dirlen = strlen(basedir);
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size_t seplen = strlen(RETRO_PATH_SEPARATOR);
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size_t filelen = strlen(filename);
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char* result = (char*)malloc(dirlen + seplen + filelen + 1);
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strcpy(result, basedir);
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strcpy(result + dirlen, RETRO_PATH_SEPARATOR);
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strcpy(result + dirlen + seplen, filename);
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return result;
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}
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/**
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* D_Skywalk: Imported from my 3DS pituka implementation
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* http://david.dantoine.org/proyecto/26/
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*/
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#ifdef _3DS
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void* linearMemAlign(size_t size, size_t alignment);
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void linearFree(void* mem);
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#endif
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void *retro_malloc(size_t size) {
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#ifdef _3DS
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return linearMemAlign(size, 0x80);
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#else
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return malloc(size);
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#endif
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}
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void retro_free(void * mem) {
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#ifdef _3DS
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linearFree(mem);
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#else
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free(mem);
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#endif
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}
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// ----------------------------- crc32b --------------------------------
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/* This is the basic CRC-32 calculation with some optimization but no
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table lookup. The the byte reversal is avoided by shifting the crc reg
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right instead of left and by using a reversed 32-bit word to represent
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the polynomial. */
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uint32_t crc32_calculate(uint8_t * data, uint32_t size) {
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uint32_t byte, crc, mask;
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crc = 0xFFFFFFFF;
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for (int i = 0; i < size; i++) {
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byte = data[i];
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crc = crc ^ byte;
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for (int j = 7; j >= 0; j--) {
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mask = -(crc & 1);
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crc = (crc >> 1) ^ (0xedb88320 & mask);
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}
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}
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return ~crc;
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}
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