Mercurial > repos > blastem
view gen_player.c @ 2316:523ab225815b
Allow dpad to increment/decrement property fields
author | Michael Pavone <pavone@retrodev.com> |
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date | Sun, 02 Apr 2023 23:21:04 -0700 |
parents | 01ff005b08f6 |
children |
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#include <stdlib.h> #include "gen_player.h" #include "event_log.h" #include "render.h" #define MCLKS_NTSC 53693175 #define MCLKS_PAL 53203395 #define MCLKS_PER_YM 7 #define MCLKS_PER_Z80 15 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16) #ifdef IS_LIB #define MAX_SOUND_CYCLES (MCLKS_PER_YM*NUM_OPERATORS*6*4) #else #define MAX_SOUND_CYCLES 100000 #endif static void sync_sound(gen_player *gen, uint32_t target) { //printf("YM | Cycle: %d, bpos: %d, PSG | Cycle: %d, bpos: %d\n", gen->ym->current_cycle, gen->ym->buffer_pos, gen->psg->cycles, gen->psg->buffer_pos * 2); while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES) { uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES; //printf("Running PSG to cycle %d\n", cur_target); psg_run(gen->psg, cur_target); //printf("Running YM-2612 to cycle %d\n", cur_target); ym_run(gen->ym, cur_target); } psg_run(gen->psg, target); ym_run(gen->ym, target); //printf("Target: %d, YM bufferpos: %d, PSG bufferpos: %d\n", target, gen->ym->buffer_pos, gen->psg->buffer_pos * 2); } static void run(gen_player *player) { while(player->reader.socket || player->reader.buffer.cur_pos < player->reader.buffer.size) { uint32_t cycle; uint8_t event = reader_next_event(&player->reader, &cycle); switch (event) { case EVENT_FLUSH: sync_sound(player, cycle); vdp_run_context(player->vdp, cycle); break; case EVENT_ADJUST: { sync_sound(player, cycle); vdp_run_context(player->vdp, cycle); uint32_t deduction = load_int32(&player->reader.buffer); ym_adjust_cycles(player->ym, deduction); vdp_adjust_cycles(player->vdp, deduction); player->psg->cycles -= deduction; break; case EVENT_PSG_REG: sync_sound(player, cycle); reader_ensure_data(&player->reader, 1); psg_write(player->psg, load_int8(&player->reader.buffer)); break; case EVENT_YM_REG: { sync_sound(player, cycle); reader_ensure_data(&player->reader, 3); uint8_t part = load_int8(&player->reader.buffer); uint8_t reg = load_int8(&player->reader.buffer); uint8_t value = load_int8(&player->reader.buffer); if (part) { ym_address_write_part2(player->ym, reg); } else { ym_address_write_part1(player->ym, reg); } ym_data_write(player->ym, value); break; case EVENT_STATE: { reader_ensure_data(&player->reader, 3); uint32_t size = load_int8(&player->reader.buffer) << 16; size |= load_int16(&player->reader.buffer); reader_ensure_data(&player->reader, size); deserialize_buffer buffer; init_deserialize(&buffer, player->reader.buffer.data + player->reader.buffer.cur_pos, size); register_section_handler(&buffer, (section_handler){.fun = vdp_deserialize, .data = player->vdp}, SECTION_VDP); register_section_handler(&buffer, (section_handler){.fun = ym_deserialize, .data = player->ym}, SECTION_YM2612); register_section_handler(&buffer, (section_handler){.fun = psg_deserialize, .data = player->psg}, SECTION_PSG); while (buffer.cur_pos < buffer.size) { load_section(&buffer); } player->reader.buffer.cur_pos += size; free(buffer.handlers); break; } default: vdp_run_context(player->vdp, cycle); vdp_replay_event(player->vdp, event, &player->reader); } } } if (!player->reader.socket) { reader_ensure_data(&player->reader, 1); } } } static int thread_main(void *player) { run(player); return 0; } void start_context(system_header *sys, char *statefile) { gen_player *player = (gen_player *)sys; if (player->reader.socket) { #ifndef IS_LIB render_create_thread(&player->thread, "player", thread_main, player); #endif } else { run(player); } } static void gamepad_down(system_header *system, uint8_t gamepad_num, uint8_t button) { gen_player *player = (gen_player *)system; reader_send_gamepad_event(&player->reader, gamepad_num, button, 1); } static void gamepad_up(system_header *system, uint8_t gamepad_num, uint8_t button) { gen_player *player = (gen_player *)system; reader_send_gamepad_event(&player->reader, gamepad_num, button, 0); } static void config_common(gen_player *player) { uint8_t vid_std = load_int8(&player->reader.buffer); uint8_t name_len = load_int8(&player->reader.buffer); player->header.info.name = calloc(1, name_len + 1); load_buffer8(&player->reader.buffer, player->header.info.name, name_len); player->vdp = init_vdp_context(vid_std == VID_PAL, 0, VDP_GENESIS); render_set_video_standard(vid_std); uint32_t master_clock = vid_std == VID_NTSC ? MCLKS_NTSC : MCLKS_PAL; player->ym = malloc(sizeof(ym2612_context)); ym_init(player->ym, master_clock, MCLKS_PER_YM, 0); player->psg = malloc(sizeof(psg_context)); psg_init(player->psg, master_clock, MCLKS_PER_PSG); player->header.start_context = start_context; player->header.gamepad_down = gamepad_down; player->header.gamepad_up = gamepad_up; player->header.type = SYSTEM_GENESIS_PLAYER; player->header.info.save_type = SAVE_NONE; } gen_player *alloc_config_gen_player(void *stream, uint32_t rom_size) { uint8_t *data = stream; gen_player *player = calloc(1, sizeof(gen_player)); init_event_reader(&player->reader, data + 9, rom_size - 9); config_common(player); return player; } gen_player *alloc_config_gen_player_reader(event_reader *reader) { gen_player *player = calloc(1, sizeof(gen_player)); player->reader = *reader; inflateCopy(&player->reader.input_stream, &reader->input_stream); render_set_external_sync(1); config_common(player); return player; }