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add aps header struct

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and some comments
This commit is contained in:
Robin Jones 2024-03-16 00:48:10 +00:00
parent 277a4cf20a
commit 8da4ffd181
1 changed files with 32 additions and 6 deletions
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38
src/menu/rom_patcher.c
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@ -3,17 +3,31 @@
#include "utils/fs.h"
#include "rom_patcher.h"
typedef struct
{
char *header_magic[5]; // The header type, should always be "APS10" for N64.
uint8_t type; // The patch type, 0 for a Simple Patch, 1 for a N64 Specific Patch.
uint8_t encoding_method; // Encoding Method, 0 for Simple Encoding.
char *description[49]; // Patch description.
bool endian; // image file format 0 = Doctor V64, 1 = CD64/Z64/Wc/SP.
uint16_t rom_id; // This is the two bytes of Cart ID taken directly from the original image.
uint8_t country_code; // The original image's country code.
uint64_t crc; // The original image's CRC taken directly out of the original image.
char *pad[6]; // For future expansion.
uint32_t size; // Size of destination image.
} aps_patch_header_t;
typedef struct
{
uint32_t address; // The start address of the data to modify as big endian. NOTE: this is only 3 bytes.
uint16_t length; // The length of the following data (greater than zero) as big endian.
uint32_t address; // The start address of the data to modify as big endian. NOTE: this is only 3 bytes for IPS.
uint16_t length; // The length of the following data (greater than zero) as big endian. If zero, use ips_patch_record_rle_t
uint8_t *data; // The data to be written to "Address" (using length).
} ips_patch_record_t;
typedef struct
{
uint32_t address; // The start address of the data to modify as big endian. NOTE: this is only 3 bytes.
uint32_t address_offset; // The start address of the data to modify as big endian. NOTE: this is only 3 bytes for IPS.
uint16_t zero_bytes; // The record length was zero, this determines the difference between ips_patch_record_t length.
uint16_t rle_byte_count; // Number of times to repeat the following byte as big endian.
uint8_t rle_byte; // The repeatitive byte to be written to "Address".
@ -31,11 +45,12 @@ rom_patcher_err_t apply_patch_type_ips(FIL *fil)
{
// https://web.archive.org/web/20170624071240/http://www.smwiki.net:80/wiki/IPS_file_format
// Check the header is valid.
// UINT bytes_read = 0;
// UINT *buff = 0;
// f_read(fil, &buff, 1024, &bytes_read);
// if (&header != "PATCH") {
// Check the header is valid.
// if (header != "PATCH") {
// return PATCH_ERR_INVALID;
// }
@ -49,6 +64,11 @@ rom_patcher_err_t apply_patch_type_ips(FIL *fil)
rom_patcher_err_t apply_patch_type_aps(FIL *fil)
{
// https://github.com/btimofeev/UniPatcher/wiki/APS-(N64)
// Check the header is valid.
// if (header != "APS10") {
// return PATCH_ERR_INVALID;
// }
return PATCH_ERR_INVALID;
}
@ -226,29 +246,35 @@ rom_patcher_err_t rom_patcher_load_file (char *path)
// get the patch header
// for (i = 0; i < 78; i++) {
// resp = apsGetNextByte();
// if (aps_resp)return aps_resp;
// aps_header[i] = aps_byte;
// }
// check the magic in the header, for N64, first 5 bytes should be "APS10"
// for (i = 0; i < 5; i++) {
// if (aps_header[i] != "APS10"[i])return ERR_WRONG_APS;
// }
// check the rom header CRC against the expected patch CRC
// for (i = 0; i < 8; i++) {
// if (rom_buff[i + 0x10] != aps_header[i + 0x3d])return ERR_APS_CRC;
// }
// determine patch endian
// asp_swap = aps_header[57] == 0 ? 1 : 0;
// while (aps_addr < len) {
// the address
// rom_addr = apsGetNextByte();
// rom_addr |= apsGetNextByte() << 8;
// rom_addr |= apsGetNextByte() << 16;
// rom_addr |= apsGetNextByte() << 24;
// the number of bytes to be changed
// block_len = apsGetNextByte();
// if (aps_resp)return aps_resp;