811 lines
26 KiB
C++
811 lines
26 KiB
C++
#include "rom.h"
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#include <SDL.h>
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#include <cstddef>
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#include <cstring>
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#include <filesystem>
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#include <fstream>
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#include <iostream>
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#include <memory>
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#include <string>
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#include <vector>
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "absl/strings/str_cat.h"
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#include "absl/strings/str_format.h"
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#include "absl/strings/string_view.h"
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#include "app/core/common.h"
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#include "app/core/constants.h"
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#include "app/gfx/bitmap.h"
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#include "app/zelda3/palettes.h"
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#define COMPRESSION_STRING_MOD 7 << 5
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namespace yaze {
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namespace app {
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namespace {
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int GetGraphicsAddress(const uchar* data, uint8_t offset) {
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auto part_one = data[kOverworldGraphicsPos1 + offset] << 16;
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auto part_two = data[kOverworldGraphicsPos2 + offset] << 8;
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auto part_three = data[kOverworldGraphicsPos3 + offset];
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auto snes_addr = (part_one | part_two | part_three);
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return core::SnesToPc(snes_addr);
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}
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Bytes SNES3bppTo8bppSheet(Bytes sheet) {
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Bytes sheet_buffer_out(0x1000);
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int xx = 0; // positions where we are at on the sheet
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int yy = 0;
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int pos = 0;
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int ypos = 0;
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// for each tiles, 16 per line
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for (int i = 0; i < 64; i++) {
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// for each line
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for (int y = 0; y < 8; y++) {
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//[0] + [1] + [16]
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for (int x = 0; x < 8; x++) {
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auto b1 = ((sheet[(y * 2) + (24 * pos)] & (kGraphicsBitmap[x])));
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auto b2 = (sheet[((y * 2) + (24 * pos)) + 1] & (kGraphicsBitmap[x]));
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auto b3 = (sheet[(16 + y) + (24 * pos)] & (kGraphicsBitmap[x]));
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unsigned char b = 0;
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if (b1 != 0) {
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b |= 1;
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}
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if (b2 != 0) {
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b |= 2;
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}
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if (b3 != 0) {
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b |= 4;
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}
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sheet_buffer_out[x + (xx) + (y * 128) + (yy * 1024)] = b;
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}
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}
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pos++;
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ypos++;
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xx += 8;
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if (ypos >= 16) {
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yy++;
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xx = 0;
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ypos = 0;
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}
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}
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return sheet_buffer_out;
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}
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void PrintCompressionPiece(const std::shared_ptr<CompressionPiece>& piece) {
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printf("Command: %d\n", piece->command);
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printf("Command kength: %d\n", piece->length);
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printf("Argument:");
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auto arg_size = piece->argument.size();
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for (int i = 0; i < arg_size; ++i) {
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printf("%02X ", piece->argument.at(i));
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}
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printf("\nArgument length: %d\n", piece->argument_length);
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}
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void PrintCompressionChain(
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const std::shared_ptr<CompressionPiece>& compressed_chain_start) {
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auto compressed_chain = compressed_chain_start->next;
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while (compressed_chain != nullptr) {
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printf("- Compression Piece -\n");
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PrintCompressionPiece(compressed_chain);
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compressed_chain = compressed_chain->next;
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}
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}
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void CheckByteRepeat(const uchar* rom_data, DataSizeArray& data_size_taken,
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CommandArgumentArray& cmd_args, uint& src_data_pos,
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const uint last_pos) {
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uint pos = src_data_pos;
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char byte_to_repeat = rom_data[pos];
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while (pos <= last_pos && rom_data[pos] == byte_to_repeat) {
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data_size_taken[kCommandByteFill]++;
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pos++;
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}
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cmd_args[kCommandByteFill][0] = byte_to_repeat;
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}
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void CheckWordRepeat(const uchar* rom_data, DataSizeArray& data_size_taken,
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CommandArgumentArray& cmd_args, uint& src_data_pos,
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const uint last_pos) {
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if (src_data_pos + 2 <= last_pos &&
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rom_data[src_data_pos] != rom_data[src_data_pos + 1]) {
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uint pos = src_data_pos;
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char byte1 = rom_data[pos];
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char byte2 = rom_data[pos + 1];
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pos += 2;
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data_size_taken[kCommandWordFill] = 2;
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while (pos + 1 <= last_pos) {
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if (rom_data[pos] == byte1 && rom_data[pos + 1] == byte2)
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data_size_taken[kCommandWordFill] += 2;
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else
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break;
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pos += 2;
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}
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cmd_args[kCommandWordFill][0] = byte1;
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cmd_args[kCommandWordFill][1] = byte2;
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}
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}
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void CheckIncByte(const uchar* rom_data, DataSizeArray& data_size_taken,
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CommandArgumentArray& cmd_args, uint& src_data_pos,
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const uint last_pos) {
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uint pos = src_data_pos;
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char byte = rom_data[pos];
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pos++;
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data_size_taken[kCommandIncreasingFill] = 1;
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byte++;
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while (pos <= last_pos && byte == rom_data[pos]) {
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data_size_taken[kCommandIncreasingFill]++;
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byte++;
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pos++;
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}
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cmd_args[kCommandIncreasingFill][0] = rom_data[src_data_pos];
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}
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void CheckIntraCopy(const uchar* rom_data, DataSizeArray& data_size_taken,
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CommandArgumentArray& cmd_args, uint& src_data_pos,
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const uint last_pos, uint start) {
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if (src_data_pos != start) {
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uint searching_pos = start;
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uint current_pos_u = src_data_pos;
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uint copied_size = 0;
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uint search_start = start;
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while (searching_pos < src_data_pos && current_pos_u <= last_pos) {
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while (rom_data[current_pos_u] != rom_data[searching_pos] &&
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searching_pos < src_data_pos)
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searching_pos++;
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search_start = searching_pos;
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while (current_pos_u <= last_pos &&
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rom_data[current_pos_u] == rom_data[searching_pos] &&
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searching_pos < src_data_pos) {
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copied_size++;
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current_pos_u++;
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searching_pos++;
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}
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if (copied_size > data_size_taken[kCommandRepeatingBytes]) {
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search_start -= start;
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printf("- Found repeat of %d at %d\n", copied_size, search_start);
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data_size_taken[kCommandRepeatingBytes] = copied_size;
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cmd_args[kCommandRepeatingBytes][0] = search_start & kSnesByteMax;
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cmd_args[kCommandRepeatingBytes][1] = search_start >> 8;
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}
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current_pos_u = src_data_pos;
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copied_size = 0;
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}
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}
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}
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// Check if a command managed to pick up `max_win` or more bytes
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// Avoids being even with copy command, since it's possible to merge copy
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void ValidateForByteGain(const DataSizeArray& data_size_taken,
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const CommandSizeArray& cmd_size, uint& max_win,
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uint& cmd_with_max) {
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for (uint cmd_i = 1; cmd_i < 5; cmd_i++) {
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uint cmd_size_taken = data_size_taken[cmd_i];
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// TODO(@scawful): Replace conditional with table of command sizes
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// "Table that is even with copy but all other cmd are 2"
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auto table_check =
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!(cmd_i == kCommandRepeatingBytes && cmd_size_taken == 3);
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if (cmd_size_taken > max_win && cmd_size_taken > cmd_size[cmd_i] &&
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table_check) {
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printf("==> C:%d / S:%d\n", cmd_i, cmd_size_taken);
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cmd_with_max = cmd_i;
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max_win = cmd_size_taken;
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}
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}
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}
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void CompressionCommandAlternative(
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const uchar* rom_data, std::shared_ptr<CompressionPiece>& compressed_chain,
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const CommandSizeArray& cmd_size, const CommandArgumentArray& cmd_args,
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uint& src_data_pos, uint& comp_accumulator, uint& cmd_with_max,
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uint& max_win) {
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printf("- Ok we get a gain from %d\n", cmd_with_max);
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std::string buffer;
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buffer.push_back(cmd_args[cmd_with_max][0]);
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if (cmd_size[cmd_with_max] == 2) {
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buffer.push_back(cmd_args[cmd_with_max][1]);
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}
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auto new_comp_piece = std::make_shared<CompressionPiece>(
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cmd_with_max, max_win, buffer, cmd_size[cmd_with_max]);
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PrintCompressionPiece(new_comp_piece);
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// If we let non compressed stuff, we need to add a copy chunk before
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if (comp_accumulator != 0) {
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std::string copy_buff;
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copy_buff.resize(comp_accumulator);
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for (int i = 0; i < comp_accumulator; ++i) {
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copy_buff[i] = rom_data[i + src_data_pos - comp_accumulator];
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}
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auto copy_chunk = std::make_shared<CompressionPiece>(
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kCommandDirectCopy, comp_accumulator, copy_buff, comp_accumulator);
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compressed_chain->next = copy_chunk;
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compressed_chain = copy_chunk;
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} else {
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compressed_chain->next = new_comp_piece;
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compressed_chain = new_comp_piece;
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}
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src_data_pos += max_win;
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comp_accumulator = 0;
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}
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absl::StatusOr<std::shared_ptr<CompressionPiece>> SplitCompressionPiece(
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std::shared_ptr<CompressionPiece>& piece, int mode) {
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std::shared_ptr<CompressionPiece> new_piece;
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uint length_left = piece->length - kMaxLengthCompression;
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piece->length = kMaxLengthCompression;
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switch (piece->command) {
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case kCommandByteFill:
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case kCommandWordFill:
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new_piece = std::make_shared<CompressionPiece>(
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piece->command, length_left, piece->argument, piece->argument_length);
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break;
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case kCommandIncreasingFill:
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new_piece = std::make_shared<CompressionPiece>(
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piece->command, length_left, piece->argument, piece->argument_length);
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new_piece->argument[0] =
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(char)(piece->argument[0] + kMaxLengthCompression);
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break;
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case kCommandDirectCopy:
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piece->argument_length = kMaxLengthCompression;
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new_piece = std::make_shared<CompressionPiece>(
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piece->command, length_left, nullptr, length_left);
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// MEMCPY
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for (int i = 0; i < length_left; ++i) {
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new_piece->argument[i] = piece->argument[i + kMaxLengthCompression];
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}
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break;
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case kCommandRepeatingBytes: {
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piece->argument_length = kMaxLengthCompression;
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uint offset = piece->argument[0] + (piece->argument[1] << 8);
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new_piece = std::make_shared<CompressionPiece>(
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piece->command, length_left, piece->argument, piece->argument_length);
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if (mode == kNintendoMode2) {
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new_piece->argument[0] =
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(offset + kMaxLengthCompression) & kSnesByteMax;
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new_piece->argument[1] = (offset + kMaxLengthCompression) >> 8;
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}
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if (mode == kNintendoMode1) {
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new_piece->argument[1] =
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(offset + kMaxLengthCompression) & kSnesByteMax;
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new_piece->argument[0] = (offset + kMaxLengthCompression) >> 8;
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}
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} break;
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default: {
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return absl::InvalidArgumentError(
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"SplitCompressionCommand: Invalid Command");
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}
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}
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return new_piece;
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}
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Bytes CreateCompressionString(std::shared_ptr<CompressionPiece>& start,
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int mode) {
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uint pos = 0;
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auto piece = start;
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Bytes output;
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while (piece != nullptr) {
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if (piece->length <= kMaxLengthNormalHeader) { // Normal header
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output.push_back(BUILD_HEADER(piece->command, piece->length));
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pos++;
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} else {
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if (piece->length <= kMaxLengthCompression) {
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output.push_back((COMPRESSION_STRING_MOD) |
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((uchar)piece->command << 2) |
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(((piece->length - 1) & 0xFF00) >> 8));
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pos++;
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printf("Building extended header : cmd: %d, length: %d - %02X\n",
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piece->command, piece->length, output[pos - 1]);
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output.push_back(((piece->length - 1) & 0x00FF)); // (char)
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pos++;
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} else {
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// We need to split the command
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auto new_piece = SplitCompressionPiece(piece, mode);
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if (!new_piece.ok()) {
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std::cout << new_piece.status().ToString() << std::endl;
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}
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printf("New added piece\n");
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auto piece_data = new_piece.value();
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PrintCompressionPiece(piece_data);
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piece_data->next = piece->next;
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piece->next = piece_data;
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continue;
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}
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}
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if (piece->command == kCommandRepeatingBytes) {
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char tmp[2];
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tmp[0] = piece->argument[0];
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tmp[1] = piece->argument[1];
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if (mode == kNintendoMode1) {
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tmp[0] = piece->argument[1];
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tmp[1] = piece->argument[0];
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}
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for (const auto& each : tmp) {
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output.push_back(each);
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pos++;
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}
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} else {
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for (int i = 0; i < piece->argument_length; ++i) {
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output.push_back(piece->argument[i]);
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pos++;
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}
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}
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pos += piece->argument_length;
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piece = piece->next;
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}
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output.push_back(kSnesByteMax);
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return output;
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}
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absl::Status ValidateCompressionResult(
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std::shared_ptr<CompressionPiece>& compressed_chain_start, int mode,
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int start, int src_data_pos) {
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if (compressed_chain_start->next != nullptr) {
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ROM temp_rom;
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RETURN_IF_ERROR(temp_rom.LoadFromBytes(
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CreateCompressionString(compressed_chain_start->next, mode)))
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ASSIGN_OR_RETURN(auto decomp_data,
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temp_rom.Decompress(0, temp_rom.GetSize()))
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if (!std::equal(decomp_data.begin() + start, decomp_data.end(),
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temp_rom.begin())) {
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return absl::InternalError(absl::StrFormat(
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"Compressed data does not match uncompressed data at %d\n",
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(uint)(src_data_pos - start)));
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}
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}
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return absl::OkStatus();
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}
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// Merge consecutive copy if possible
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std::shared_ptr<CompressionPiece> MergeCopy(
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std::shared_ptr<CompressionPiece>& start) {
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std::shared_ptr<CompressionPiece> piece = start;
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while (piece != nullptr) {
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if (piece->command == kCommandDirectCopy && piece->next != nullptr &&
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piece->next->command == kCommandDirectCopy &&
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piece->length + piece->next->length <= kMaxLengthCompression) {
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uint previous_length = piece->length;
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piece->length = piece->length + piece->next->length;
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for (int i = 0; i < piece->next->argument_length; ++i) {
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piece->argument[i + previous_length] = piece->next->argument[i];
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}
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piece->argument_length = piece->length;
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PrintCompressionPiece(piece);
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auto p_next_next = piece->next->next;
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piece->next = p_next_next;
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continue; // Next could be another copy
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}
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piece = piece->next;
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}
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return start;
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}
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} // namespace
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// TODO TEST compressed data border for each cmd
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absl::StatusOr<Bytes> ROM::Compress(const int start, const int length, int mode,
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bool check) {
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// Worse case should be a copy of the string with extended header
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auto compressed_chain = std::make_shared<CompressionPiece>(1, 1, "aaa", 2);
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auto compressed_chain_start = compressed_chain;
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CommandArgumentArray cmd_args = {{}};
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DataSizeArray data_size_taken = {0, 0, 0, 0, 0};
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CommandSizeArray cmd_size = {0, 1, 2, 1, 2};
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uint src_data_pos = start;
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uint last_pos = start + length - 1;
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uint comp_accumulator = 0; // Used when skipping using copy
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while (true) {
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data_size_taken.fill({});
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cmd_args.fill({{}});
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CheckByteRepeat(rom_data_.data(), data_size_taken, cmd_args, src_data_pos,
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last_pos);
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CheckWordRepeat(rom_data_.data(), data_size_taken, cmd_args, src_data_pos,
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last_pos);
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CheckIncByte(rom_data_.data(), data_size_taken, cmd_args, src_data_pos,
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last_pos);
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CheckIntraCopy(rom_data_.data(), data_size_taken, cmd_args, src_data_pos,
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last_pos, start);
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uint max_win = 2;
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uint cmd_with_max = kCommandDirectCopy;
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ValidateForByteGain(data_size_taken, cmd_size, max_win, cmd_with_max);
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if (cmd_with_max == kCommandDirectCopy) {
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// This is the worst case scenario
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// Progress through the next byte, in case there's a different
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// compression command we can implement before we hit 32 bytes.
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src_data_pos++;
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comp_accumulator++;
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// Arbitrary choice to do a 32 bytes grouping for copy.
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if (comp_accumulator == 32 || src_data_pos > last_pos) {
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std::string buffer;
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for (int i = 0; i < comp_accumulator; ++i) {
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buffer.push_back(rom_data_[i + src_data_pos - comp_accumulator]);
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}
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auto new_comp_piece = std::make_shared<CompressionPiece>(
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kCommandDirectCopy, comp_accumulator, buffer, comp_accumulator);
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compressed_chain->next = new_comp_piece;
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compressed_chain = new_comp_piece;
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comp_accumulator = 0;
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}
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} else {
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// Anything is better than directly copying bytes...
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CompressionCommandAlternative(rom_data_.data(), compressed_chain,
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cmd_size, cmd_args, src_data_pos,
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comp_accumulator, cmd_with_max, max_win);
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}
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if (src_data_pos > last_pos) {
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printf("Breaking compression loop\n");
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break;
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}
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if (check) {
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RETURN_IF_ERROR(ValidateCompressionResult(compressed_chain_start, mode,
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start, src_data_pos))
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}
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}
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MergeCopy(compressed_chain_start->next); // Skipping compression chain header
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PrintCompressionChain(compressed_chain_start);
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return CreateCompressionString(compressed_chain_start->next, mode);
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}
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absl::StatusOr<Bytes> ROM::CompressGraphics(const int pos, const int length) {
|
|
return Compress(pos, length, kNintendoMode2);
|
|
}
|
|
absl::StatusOr<Bytes> ROM::CompressOverworld(const int pos, const int length) {
|
|
return Compress(pos, length, kNintendoMode1);
|
|
}
|
|
|
|
absl::StatusOr<Bytes> ROM::Decompress(int offset, int size, int mode) {
|
|
Bytes buffer(size, 0);
|
|
uint length = 0;
|
|
uint buffer_pos = 0;
|
|
uchar command = 0;
|
|
uchar header = rom_data_[offset];
|
|
|
|
while (header != kSnesByteMax) {
|
|
if ((header & kExpandedMod) == kExpandedMod) {
|
|
// Expanded Command
|
|
command = ((header >> 2) & kCommandMod);
|
|
length = (((header << 8) | rom_data_[offset + 1]) & kExpandedLengthMod);
|
|
offset += 2; // Advance 2 bytes in ROM
|
|
} else {
|
|
// Normal Command
|
|
command = ((header >> 5) & kCommandMod);
|
|
length = (header & kNormalLengthMod);
|
|
offset += 1; // Advance 1 byte in ROM
|
|
}
|
|
length += 1; // each commands is at least of size 1 even if index 00
|
|
|
|
switch (command) {
|
|
case kCommandDirectCopy: // Does not advance in the ROM
|
|
memcpy(buffer.data() + buffer_pos, rom_data_.data() + offset, length);
|
|
buffer_pos += length;
|
|
offset += length;
|
|
break;
|
|
case kCommandByteFill:
|
|
for (int i = 0; i < length; i++) {
|
|
buffer[buffer_pos] = rom_data_[offset];
|
|
buffer_pos++;
|
|
}
|
|
offset += 1; // Advances 1 byte in the ROM
|
|
break;
|
|
case kCommandWordFill: {
|
|
auto a = rom_data_[offset];
|
|
auto b = rom_data_[offset + 1];
|
|
for (int i = 0; i < length; i = i + 2) {
|
|
buffer[buffer_pos + i] = a;
|
|
if ((i + 1) < length) buffer[buffer_pos + i + 1] = b;
|
|
}
|
|
buffer_pos += length;
|
|
offset += 2; // Advance 2 byte in the ROM
|
|
} break;
|
|
case kCommandIncreasingFill: {
|
|
auto inc_byte = rom_data_[offset];
|
|
for (int i = 0; i < length; i++) {
|
|
buffer[buffer_pos] = inc_byte++;
|
|
buffer_pos++;
|
|
}
|
|
offset += 1; // Advance 1 byte in the ROM
|
|
} break;
|
|
case kCommandRepeatingBytes: {
|
|
ushort s1 = ((rom_data_[offset + 1] & kSnesByteMax) << 8);
|
|
ushort s2 = ((rom_data_[offset] & kSnesByteMax));
|
|
int addr = (s1 | s2);
|
|
|
|
if (mode == kNintendoMode1) { // Reversed byte order for overworld maps
|
|
// addr = (s2 | s1);
|
|
addr = (rom_data_[offset + 2]) | ((rom_data_[offset + 1]) << 8);
|
|
memcpy(buffer.data() + buffer_pos, rom_data_.data() + offset, length);
|
|
buffer_pos += length;
|
|
offset += 2;
|
|
break;
|
|
}
|
|
|
|
if (addr > offset) {
|
|
return absl::InternalError(absl::StrFormat(
|
|
"DecompressOverworld: Offset for command copy exceeds "
|
|
"current position (Offset : %#04x | Pos : %#06x)\n",
|
|
addr, offset));
|
|
}
|
|
|
|
if (buffer_pos + length >= size) {
|
|
size *= 2;
|
|
buffer.resize(size);
|
|
}
|
|
|
|
for (int i = 0; i < length; i++) {
|
|
buffer[buffer_pos] = buffer[addr + i];
|
|
buffer_pos++;
|
|
}
|
|
offset += 2; // Advance 2 bytes in the ROM
|
|
|
|
} break;
|
|
default: {
|
|
std::cout << absl::StrFormat(
|
|
"DecompressGraphics: Invalid command in header (Offset : %#06x, "
|
|
"Command: %#04x)\n",
|
|
offset, command);
|
|
} break;
|
|
}
|
|
// check next byte
|
|
header = rom_data_[offset];
|
|
}
|
|
|
|
return buffer;
|
|
}
|
|
|
|
absl::StatusOr<Bytes> ROM::DecompressGraphics(int pos, int size) {
|
|
return Decompress(pos, size, kNintendoMode2);
|
|
}
|
|
|
|
absl::StatusOr<Bytes> ROM::DecompressOverworld(int pos, int size) {
|
|
return Decompress(pos, size, kNintendoMode1);
|
|
}
|
|
|
|
// 0-112 -> compressed 3bpp bgr -> (decompressed each) 0x600 chars
|
|
// 113-114 -> compressed 2bpp -> (decompressed each) 0x800 chars
|
|
// 115-126 -> uncompressed 3bpp sprites -> (each) 0x600 chars
|
|
// 127-217 -> compressed 3bpp sprites -> (decompressed each) 0x600 chars
|
|
// 218-222 -> compressed 2bpp -> (decompressed each) 0x800 chars
|
|
absl::Status ROM::LoadAllGraphicsData() {
|
|
Bytes sheet;
|
|
bool convert = false;
|
|
|
|
for (int i = 0; i < core::NumberOfSheets; i++) {
|
|
if (i >= 115 && i <= 126) { // uncompressed sheets
|
|
sheet.resize(core::Uncompressed3BPPSize);
|
|
auto offset = GetGraphicsAddress(rom_data_.data(), i);
|
|
for (int j = 0; j < core::Uncompressed3BPPSize; j++) {
|
|
sheet[j] = rom_data_[j + offset];
|
|
}
|
|
convert = true;
|
|
} else if (i == 113 || i == 114 || i >= 218) {
|
|
convert = false;
|
|
} else {
|
|
auto offset = GetGraphicsAddress(rom_data_.data(), i);
|
|
ASSIGN_OR_RETURN(sheet, Decompress(offset))
|
|
convert = true;
|
|
}
|
|
|
|
if (convert) {
|
|
auto converted_sheet = SNES3bppTo8bppSheet(sheet);
|
|
graphics_bin_[i] =
|
|
gfx::Bitmap(core::kTilesheetWidth, core::kTilesheetHeight,
|
|
core::kTilesheetDepth, converted_sheet.data(), 0x1000);
|
|
graphics_bin_.at(i).CreateTexture(renderer_);
|
|
|
|
for (int j = 0; j < graphics_bin_.at(i).GetSize(); ++j) {
|
|
graphics_buffer_.push_back(graphics_bin_.at(i).GetByte(j));
|
|
}
|
|
} else {
|
|
for (int j = 0; j < 0x1000; ++j) {
|
|
graphics_buffer_.push_back(0xFF);
|
|
}
|
|
}
|
|
}
|
|
return absl::OkStatus();
|
|
}
|
|
|
|
absl::Status ROM::LoadFromFile(const absl::string_view& filename) {
|
|
filename_ = filename;
|
|
std::ifstream file(filename.data(), std::ios::binary);
|
|
if (!file.is_open()) {
|
|
return absl::InternalError(
|
|
absl::StrCat("Could not open ROM file: ", filename));
|
|
}
|
|
|
|
size_ = std::filesystem::file_size(filename);
|
|
rom_data_.resize(size_);
|
|
for (auto i = 0; i < size_; ++i) {
|
|
char byte_to_read = ' ';
|
|
file.read(&byte_to_read, sizeof(char));
|
|
rom_data_[i] = byte_to_read;
|
|
}
|
|
|
|
// copy ROM title
|
|
memcpy(title, rom_data_.data() + kTitleStringOffset, kTitleStringLength);
|
|
|
|
file.close();
|
|
LoadAllPalettes();
|
|
is_loaded_ = true;
|
|
return absl::OkStatus();
|
|
}
|
|
|
|
absl::Status ROM::LoadFromPointer(uchar* data, size_t length) {
|
|
if (!data)
|
|
return absl::InvalidArgumentError(
|
|
"Could not load ROM: parameter `data` is empty.");
|
|
|
|
for (int i = 0; i < length; ++i) rom_data_.push_back(data[i]);
|
|
|
|
return absl::OkStatus();
|
|
}
|
|
|
|
absl::Status ROM::LoadFromBytes(const Bytes& data) {
|
|
if (data.empty()) {
|
|
return absl::InvalidArgumentError(
|
|
"Could not load ROM: parameter `data` is empty.");
|
|
}
|
|
rom_data_ = data;
|
|
return absl::OkStatus();
|
|
}
|
|
|
|
absl::Status ROM::SaveToFile() {
|
|
std::fstream file(filename_.data(), std::ios::binary | std::ios::out);
|
|
if (!file.is_open()) {
|
|
return absl::InternalError(
|
|
absl::StrCat("Could not open ROM file: ", filename_));
|
|
}
|
|
for (auto i = 0; i < size_; ++i) {
|
|
file << rom_data_[i];
|
|
}
|
|
return absl::OkStatus();
|
|
}
|
|
|
|
void ROM::RenderBitmap(gfx::Bitmap* bitmap) const {
|
|
bitmap->CreateTexture(renderer_);
|
|
}
|
|
|
|
gfx::SNESColor ROM::ReadColor(int offset) {
|
|
short color = (short)((rom_data_[offset + 1] << 8) + rom_data_[offset]);
|
|
gfx::snes_color new_color;
|
|
new_color.red = (color & 0x1F) * 8;
|
|
new_color.green = ((color >> 5) & 0x1F) * 8;
|
|
new_color.blue = ((color >> 10) & 0x1F) * 8;
|
|
gfx::SNESColor snes_color(new_color);
|
|
return snes_color;
|
|
}
|
|
|
|
gfx::SNESPalette ROM::ReadPalette(int offset, int num_colors) {
|
|
int color_offset = 0;
|
|
std::vector<gfx::snes_color> colors(num_colors);
|
|
|
|
while (color_offset < num_colors) {
|
|
short color = (short)((rom_data_[offset + 1] << 8) + rom_data_[offset]);
|
|
gfx::snes_color new_color;
|
|
new_color.red = (color & 0x1F) * 8;
|
|
new_color.green = ((color >> 5) & 0x1F) * 8;
|
|
new_color.blue = ((color >> 10) & 0x1F) * 8;
|
|
colors[color_offset] = new_color;
|
|
color_offset++;
|
|
offset += 2;
|
|
}
|
|
|
|
gfx::SNESPalette palette(colors);
|
|
return palette;
|
|
}
|
|
|
|
void ROM::LoadAllPalettes() {
|
|
// 35 colors each, 7x5 (0,2 on grid)
|
|
for (int i = 0; i < 6; i++) {
|
|
zelda3::overworld_MainPalettes[i] =
|
|
ReadPalette(core::overworldPaletteMain + (i * (35 * 2)), 35);
|
|
}
|
|
// 21 colors each, 7x3 (8,2 and 8,5 on grid)
|
|
for (int i = 0; i < 20; i++) {
|
|
zelda3::overworld_AuxPalettes[i] =
|
|
ReadPalette(core::overworldPaletteAuxialiary + (i * (21 * 2)), 21);
|
|
}
|
|
// 7 colors each 7x1 (0,7 on grid)
|
|
for (int i = 0; i < 14; i++) {
|
|
zelda3::overworld_AnimatedPalettes[i] =
|
|
ReadPalette(core::overworldPaletteAnimated + (i * (7 * 2)), 7);
|
|
}
|
|
// 32 colors each 16x2 (0,0 on grid)
|
|
for (int i = 0; i < 2; i++) {
|
|
zelda3::HudPalettes[i] = ReadPalette(core::hudPalettes + (i * 64), 32);
|
|
}
|
|
|
|
zelda3::globalSprite_Palettes[0] =
|
|
ReadPalette(core::globalSpritePalettesLW, 60);
|
|
zelda3::globalSprite_Palettes[1] =
|
|
ReadPalette(core::globalSpritePalettesDW, 60);
|
|
for (int i = 0; i < 5; i++) {
|
|
zelda3::armors_Palettes[i] =
|
|
ReadPalette(core::armorPalettes + (i * 30), 15);
|
|
}
|
|
for (int i = 0; i < 4; i++) {
|
|
zelda3::swords_Palettes[i] = ReadPalette(core::swordPalettes + (i * 6), 3);
|
|
}
|
|
for (int i = 0; i < 3; i++) {
|
|
zelda3::shields_Palettes[i] =
|
|
ReadPalette(core::shieldPalettes + (i * 8), 4);
|
|
}
|
|
for (int i = 0; i < 12; i++) {
|
|
zelda3::spritesAux1_Palettes[i] =
|
|
ReadPalette(core::spritePalettesAux1 + (i * 14), 7);
|
|
}
|
|
for (int i = 0; i < 11; i++) {
|
|
zelda3::spritesAux2_Palettes[i] =
|
|
ReadPalette(core::spritePalettesAux2 + (i * 14), 7);
|
|
}
|
|
for (int i = 0; i < 24; i++) {
|
|
zelda3::spritesAux3_Palettes[i] =
|
|
ReadPalette(core::spritePalettesAux3 + (i * 14), 7);
|
|
}
|
|
for (int i = 0; i < 20; i++) {
|
|
zelda3::dungeonsMain_Palettes[i] =
|
|
ReadPalette(core::dungeonMainPalettes + (i * 180), 90);
|
|
}
|
|
|
|
zelda3::overworld_GrassPalettes[0] = ReadColor(core::hardcodedGrassLW);
|
|
zelda3::overworld_GrassPalettes[1] = ReadColor(core::hardcodedGrassDW);
|
|
zelda3::overworld_GrassPalettes[2] = ReadColor(core::hardcodedGrassSpecial);
|
|
|
|
zelda3::object3D_Palettes[0] = ReadPalette(core::triforcePalette, 8);
|
|
zelda3::object3D_Palettes[1] = ReadPalette(core::crystalPalette, 8);
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
zelda3::overworld_Mini_Map_Palettes[i] =
|
|
ReadPalette(core::overworldMiniMapPalettes + (i * 256), 128);
|
|
}
|
|
|
|
// TODO: check for the paletts in the empty bank space that kan will allocate
|
|
// and read them in here
|
|
// TODO magic colors
|
|
// LW
|
|
// int j = 0;
|
|
// while (j < 64) {
|
|
// zelda3::overworld_BackgroundPalette[j++] =
|
|
// Color.FromArgb(0xFF, 0x48, 0x98, 0x48);
|
|
// }
|
|
|
|
// // DW
|
|
// while (j < 128) {
|
|
// zelda3::overworld_BackgroundPalette[j++] =
|
|
// Color.FromArgb(0xFF, 0x90, 0x88, 0x50);
|
|
// }
|
|
|
|
// // SP
|
|
// while (j < core::kNumOverworldMaps) {
|
|
// zelda3::overworld_BackgroundPalette[j++] =
|
|
// Color.FromArgb(0xFF, 0x48, 0x98, 0x48);
|
|
// }
|
|
|
|
// zelda3::overworld_BackgroundPalette =
|
|
// ReadPalette(core::customAreaSpecificBGPalette, 160);
|
|
}
|
|
|
|
} // namespace app
|
|
} // namespace yaze
|