407 lines
10 KiB
C++
407 lines
10 KiB
C++
// Based on https://github.com/mpflaga/Arduino_Library-vs1053_for_SdFat/blob/master/src/vs1053_SdFat.cpp
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#include "player.h"
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#include "spi_master.h"
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//Player::_spi_settings
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Player::Player() {
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pinMode(XRESET, OUTPUT);
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digitalWrite(XRESET, HIGH);
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pinMode(DREQ, INPUT);
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_init();
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}
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void Player::_reset() {
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digitalWrite(XRESET, LOW);
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delay(100);
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digitalWrite(XRESET, HIGH);
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delay(100);
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_state = uninitialized;
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_spi_settings = &_spi_settings_slow; // After reset, communication has to be slow
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}
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void Player::_init() {
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SPIMaster::disable();
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_reset();
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uint16_t result = _read_control_register(SCI_MODE);
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Serial.printf("SCI_MODE: 0x%04X\n", result);
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if (result != 0x4800) {
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Serial.printf("Error: SCI_MODE was 0x%04X, expected was 0x4800.\n", result);
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return;
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}
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result = _read_control_register(SCI_STATUS);
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Serial.printf("SCI_STATUS: 0x%04X\n", result);
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if (result != 0x0040 && result != 0x0048) {
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Serial.printf("Error: SCI_STATUS was 0x%04X, expected was 0x0040 or 0x0048.\n", result);
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return;
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}
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result = _read_control_register(SCI_CLOCKF);
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Serial.printf("SCI_CLOCKF: 0x%04X\n", result);
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Serial.println("VS1053 Init looking good.");
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Serial.println("Upping VS1053 multiplier...");
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_write_control_register(SCI_CLOCKF, 0x6000);
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delay(10);
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_spi_settings = &_spi_settings_fast;
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result = _read_control_register(SCI_CLOCKF);
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Serial.printf("SCI_CLOCKF: 0x%04X\n", result);
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if (result != 0x6000) {
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Serial.printf("Error: SCI_CLOCKF was 0x%04X, expected was 0x6000.\n", result);
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return;
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}
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_end_byte = (int8_t)(_read_wram(ADDR_ENDBYTE) & 0xFF);
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set_volume(VOLUME_DEFAULT);
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Serial.println("VS1053 initialization completed.");
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_state = idle;
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}
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inline void Player::_wait() {
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while(!digitalRead(DREQ));
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}
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uint16_t Player::_read_control_register(uint8_t address) {
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_wait();
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SPIMaster::enable(XCS);
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SPI.beginTransaction(*_spi_settings);
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SPI.transfer(CMD_READ);
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SPI.transfer(address);
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uint8_t b1 = SPI.transfer(0xFF);
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_wait();
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uint8_t b2 = SPI.transfer(0xFF);
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_wait();
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SPI.endTransaction();
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SPIMaster::disable();
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return (b1 << 8) | b2;
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}
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void Player::_write_control_register(uint8_t address, uint16_t value) {
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uint8_t b1 = value >> 8;
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uint8_t b2 = value & 0xFF;
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_wait();
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SPIMaster::enable(XCS);
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SPI.beginTransaction(*_spi_settings);
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SPI.transfer(CMD_WRITE);
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SPI.transfer(address);
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SPI.transfer(b1);
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SPI.transfer(b2);
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_wait();
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SPI.endTransaction();
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SPIMaster::disable();
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}
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void Player::_write_data(uint8_t* buffer) {
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SPIMaster::enable(XDCS);
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SPI.beginTransaction(*_spi_settings);
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for (uint i=0; i<sizeof(_buffer); i++) {
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SPI.transfer(_buffer[i]);
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}
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SPI.endTransaction();
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SPIMaster::disable();
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}
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uint16_t Player::_read_wram(uint16_t address) {
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Serial.printf("Reading WRAM address 0x%04X... ", address);
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_write_control_register(SCI_WRAMADDR, address);
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uint16_t r1 = _read_control_register(SCI_WRAM);
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_write_control_register(SCI_WRAMADDR, address);
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uint16_t r2 = _read_control_register(SCI_WRAM);
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Serial.printf("Got 0x%04X and 0x%04X.\n", r1, r2);
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return r1;
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}
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void Player::set_volume(uint8_t vol, bool save) {
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if (save) {
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_volume = vol;
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}
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Serial.printf("Setting volume to 0x%02X\n", vol);
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vol = 0xFF - vol;
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if (vol==0xFF) vol=0xFE;
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uint16_t value = (vol<<8)|vol;
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Serial.printf("Setting volume register to 0x%04X\n", value);
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_write_control_register(SCI_VOL, value);
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}
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void Player::vol_up() {
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if (_volume + VOLUME_STEP > VOLUME_MAX) set_volume(VOLUME_MAX);
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else set_volume(_volume + VOLUME_STEP);
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}
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void Player::vol_down() {
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if (_volume >= VOLUME_MIN + VOLUME_STEP) set_volume(_volume - VOLUME_STEP);
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else set_volume(VOLUME_MIN);
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}
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void Player::_mute() {
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Serial.println("Muting.");
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set_volume(0, false);
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}
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void Player::_unmute() {
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Serial.println("Unmuting.");
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set_volume(_volume, false);
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}
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void Player::track_next() {
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if (_state != playing) return;
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stop();
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play_song(_playing_album, _playing_index + 1);
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}
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void Player::track_prev() {
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if (_state != playing) return;
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if (_playing_index == 0) _playing_index=1;
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stop();
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play_song(_playing_album, _playing_index - 1);
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}
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String Player::_find_album_dir(String id) {
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String id_with_divider = id + " - ";
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File root = SD.open("/");
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File entry;
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String result = String("");
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while ((result.length()==0) && (entry = root.openNextFile())) {
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String name = entry.name();
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if (entry.isDirectory() && (name.startsWith(id_with_divider) || name.equals(id))) {
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result = name;
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}
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entry.close();
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}
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root.close();
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return result;
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}
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std::list<String> Player::_files_in_dir(String path) {
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Serial.printf("Examining folder %s...\n", path.c_str());
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if (!path.startsWith("/")) path = String("/") + path;
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if (!path.endsWith("/")) path.concat("/");
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std::list<String> result;
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if (!SD.exists(path)) return result;
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File dir = SD.open(path);
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File entry;
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while (entry = dir.openNextFile()) {
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String filename = entry.name();
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if (!entry.isDirectory() &&
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!filename.startsWith(".") &&
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( filename.endsWith(".mp3") ||
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filename.endsWith(".ogg") ||
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filename.endsWith(".wma") ||
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filename.endsWith(".mp4") ||
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filename.endsWith(".mpa")) {
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//Serial.printf("Adding file %s\n", filename.c_str());
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result.push_back(path + filename);
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} else {
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//Serial.printf("Ignoring entry %s\n", filename.c_str());
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}
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entry.close();
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}
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dir.close();
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result.sort();
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return result;
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}
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bool Player::play_album(String album) {
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album_state s = _last_tracks[album.c_str()];
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Serial.printf("Last index for album %s was %d,%d\n", album.c_str(), s.index, s.position);
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return play_song(album, s.index, s.position);
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}
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bool Player::play_song(String album, uint8_t index, uint32_t skip_to) {
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if (_state != idle) return false;
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Serial.printf("Trying to play song at index %d, offset %d of album %s\n", index, skip_to, album.c_str());
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String path = _find_album_dir(album);
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if (path.length()==0) {
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Serial.println("Could not find album.");
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return false;
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} else {
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Serial.printf("Found album in dir '%s'.\n", path.c_str());
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}
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std::list<String> files = _files_in_dir(path);
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Serial.printf("Found %d songs in album\n", files.size());
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if (index >= files.size()) {
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Serial.println("No matching file found - not playing.");
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return false;
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}
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//std::list<String>::iterator it = files.begin();
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//std::advance(it, index);
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String file = *(std::next(files.begin(), index));
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_state = playing;
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_playing_album = album;
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_playing_index = index;
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_set_last_track(album.c_str(), index, skip_to);
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_play_file(file, skip_to);
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return true;
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}
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void Player::play_system_sound(String filename) {
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//String file = String("/system/") + filename;
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String file = filename;
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if (!SD.exists(file)) {
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Serial.printf("File %s does not exist!\n", file.c_str());
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return;
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}
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if (_state == playing) {
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stop();
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_state = system_sound_while_playing;
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} else {
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_state = system_sound_while_stopped;
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}
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_play_file(file, 0);
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}
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void Player::_play_file(String file, uint32_t file_offset) {
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Serial.printf("play_file('%s', %d)\n", file.c_str(), file_offset);
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_file = SD.open(file);
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if (!_file) return;
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Serial.println("Resetting SCI_DECODE_TIME...");
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_write_control_register(SCI_DECODE_TIME, 0);
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Serial.println("Resetting SS_DO_NOT_JUMP...");
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_write_control_register(SCI_STATUS, _read_control_register(SCI_STATUS) & ~SS_DO_NOT_JUMP);
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delay(100);
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_refills = 0;
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_skip_to = file_offset;
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if (_skip_to>0) _mute();
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Serial.println("Now playing.");
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}
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void Player::_flush(uint bytes) {
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SPIMaster::enable(XDCS);
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SPI.beginTransaction(*_spi_settings);
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for(uint i=0; i<bytes; i++) {
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_wait();
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SPI.transfer(_end_byte);
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}
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SPI.endTransaction();
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}
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void Player::_finish_playing() {
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_flush(2052);
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_write_control_register(SCI_MODE, _read_control_register(SCI_MODE) | SM_CANCEL);
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for (int i=0; i<64; i++) {
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_flush(32);
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uint16_t mode = _read_control_register(SCI_MODE);
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if ((mode & SM_CANCEL) == 0) return;
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}
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// If we reached this, the Chip didn't stop. That should not happen.
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// (That's written in the manual.)
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// Reset the chip.
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_init();
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}
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void Player::_flush_and_cancel() {
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Serial.println("In flush_and_cancel()");
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//_flush(2052);
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for (int i=0; i<64; i++) {
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_write_control_register(SCI_MODE, _read_control_register(SCI_MODE) | SM_CANCEL);
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}
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_flush(2052);
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}
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void Player::stop() {
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if (_state != playing /* && _state != system_sound_while_playing && _state != system_sound_while_stopped*/) return;
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Serial.println("Stopping.");
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if (_state == playing) {
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_set_last_track(_playing_album.c_str(), _playing_index, (uint32_t)_file.position());
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}
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_state = stopping;
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_stop_delay = 0;
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_write_control_register(SCI_MODE, _read_control_register(SCI_MODE) | SM_CANCEL);
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while (true) {
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_refill();
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uint16_t mode = _read_control_register(SCI_MODE);
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if ((mode & SM_CANCEL) == 0) {
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_flush(2052);
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_finish_stopping();
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break;
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} else if (_stop_delay > 2048) {
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init();
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break;
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}
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_stop_delay++;
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}
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}
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void Player::_finish_stopping() {
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_state = idle;
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if (_file) {
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_file.close();
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}
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Serial.println("Stopped.");
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}
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void Player::_refill() {
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SPIMaster::enable(PIN_SD_CS);
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_refills++;
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if (_refills % 1000 == 0) Serial.print(".");
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uint8_t result = _file.read(_buffer, sizeof(_buffer));
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if (result == 0) {
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// File is over.
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Serial.println("EOF reached.");
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_finish_playing();
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if (_state == system_sound_while_playing) {
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_finish_stopping();
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play_album(_playing_album);
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return;
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} else if (_state == system_sound_while_stopped) {
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_finish_stopping();
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return;
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}
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_finish_stopping();
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bool result = play_song(_playing_album, _playing_index + 1);
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if (!result) {
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_set_last_track(_playing_album.c_str(), 0, 0);
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}
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return;
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}
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_write_data(_buffer);
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if (_skip_to > 0) {
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if (_skip_to > _file.position()) {
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uint16_t status = _read_control_register(SCI_STATUS);
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if ((status & SS_DO_NOT_JUMP) == 0) {
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Serial.printf("Skipping to %d.\n", _skip_to);
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_flush(2048);
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_file.seek(_skip_to);
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_skip_to = 0;
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_unmute();
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}
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} else {
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_skip_to = 0;
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_unmute();
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}
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}
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}
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bool Player::_refill_needed() {
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return _state==playing ||
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_state==stopping ||
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_state==system_sound_while_playing ||
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_state==system_sound_while_stopped;
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}
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bool Player::loop() {
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if (digitalRead(DREQ) && _refill_needed()) {
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_refill();
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return true;
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}
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return false;
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}
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void Player::_set_last_track(const char* album, uint8_t index, uint32_t position) {
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Serial.printf("Setting _last_track[%s]=%d,%d.\n", album, index, position);
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_last_tracks[album] = {index, position};
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}
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