671 lines
21 KiB
C++
671 lines
21 KiB
C++
#include "playback.h"
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#include "SDL_mixer.h"
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#include "playback_backend.hpp"
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#include <SDL_audio.h>
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#include <chrono>
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extern "C" {
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#include <vgmstream.h>
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#include <util.h>
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#include <plugins.h>
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}
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#include <climits>
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#include <SDL.h>
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#include <exception>
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#include <thread>
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#include <cmath>
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#ifdef __linux__
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#include <pthread.h>
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#endif
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#include "log.hpp"
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#include <filesystem>
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#include "dbus.hpp"
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#include <string.h>
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#include "util.hpp"
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#include "file_backend.hpp"
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using namespace std::chrono;
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size_t CalculateBufSize(SDL_AudioSpec *obtained, double seconds, double max_seconds, size_t samples_override = 0) {
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return ((((samples_override == 0) ? obtained->samples : samples_override) * std::min(seconds, max_seconds)) + 1) * sizeof(SAMPLETYPE) * obtained->channels;
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}
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void PlaybackInstance::SDLCallbackInner(Uint8 *stream, int len) {
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SDL_memset((void*)stream, 0, len);
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if (!playback_ready.load()) return;
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if (process == nullptr) return;
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if (st == nullptr) return;
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size_t unit = sizeof(SAMPLETYPE) * spec.channels;
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size_t bytes_per_iter = (bufsize / unit) * unit;
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while (st->numSamples() * unit <= (size_t)len) {
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if (process == nullptr) {
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return;
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}
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Uint8 *new_buf;
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int new_bufsize;
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new_buf = buf;
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bytes_per_iter = backend_spec.size;
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if (bytes_per_iter > bufsize) {
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bytes_per_iter = bufsize;
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}
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new_bufsize = bytes_per_iter;
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if (this->process != nullptr) {
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size_t new_bytes = this->process->render(buf, bytes_per_iter);
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if (SDL_AudioStreamPut(sdl_stream, buf, new_bytes) < 0) {
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ERROR.writefln("SDL_AudioStreamPut: %s", SDL_GetError());
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DEBUG.writefln("Current audio backend: %s", process->get_backend_id().c_str());
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DEBUG.writefln("SDL_AudioStream *sdl_stream = %0lx", (size_t)sdl_stream);
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return;
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}
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do {
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new_bufsize = SDL_AudioStreamGet(sdl_stream, buf, std::min((size_t)backend_spec.samples, bufsize / unit) * unit);
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if (new_bufsize < 0) {
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ERROR.writefln("SDL_AudioStreamGet: %s", SDL_GetError());
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DEBUG.writefln("Current audio backend: %s", process->get_backend_id().c_str());
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return;
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}
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SAMPLETYPE *sbuf = (SAMPLETYPE*)buf;
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for (size_t i = 0; i < (new_bufsize / unit) * spec.channels; i++) {
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sbuf[i] *= real_volume;
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}
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st->putSamples(sbuf, new_bufsize / unit);
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} while (new_bufsize > 0);
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} else {
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return;
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}
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}
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st->receiveSamples((SAMPLETYPE*)stream, len / unit);
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}
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#ifdef __ANDROID__
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oboe::DataCallbackResult PlaybackInstance::onAudioReady(
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oboe::AudioStream *audioStream,
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void *audioData,
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int32_t numFrames) {
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SDLCallbackInner((Uint8*)audioData, numFrames * audioStream->getBytesPerFrame());
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return oboe::DataCallbackResult::Continue;
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}
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#endif
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void PlaybackInstance::SDLCallback(void *userdata, Uint8 *stream, int len) {
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((PlaybackInstance*)userdata)->SDLCallbackInner(stream, len);
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}
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void PlaybackInstance::Load(const char *file, int idx) {
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SDL_LockAudioDevice(device);
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load_finished.store(false);
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playback_ready.store(false);
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if (process != nullptr) delete process;
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try {
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process = new PlaybackProcess(file, idx);
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} catch (std::exception e) {
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ERROR.writefln("Exception caught when creating process: %s", e.what());
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process = nullptr;
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}
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length = 0.0;
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if (process != nullptr && process->process_running()) {
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length = process->get_length();
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auto backend_spec_proxy = process->get_audio_spec();
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memset(&backend_spec, 0, sizeof(backend_spec));
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backend_spec.channels = backend_spec_proxy->channel_count();
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audio_data_t sample_fmt;
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sample_fmt.size = backend_spec_proxy->bits() / 8;
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sample_fmt.endian = backend_spec_proxy->endian() == EndianID::BIG;
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sample_fmt.is_float = backend_spec_proxy->format_type() == FormatType::FLOAT;
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sample_fmt.is_signed = backend_spec_proxy->format_type() != FormatType::UNSIGNED;
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backend_spec.format = sample_spec_to_sdl(sample_fmt);
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backend_spec.freq = backend_spec_proxy->sample_rate();
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backend_spec.samples = backend_spec_proxy->has_max_samples() ? backend_spec_proxy->max_samples() : backend_spec_proxy->has_min_samples() ? backend_spec_proxy->min_samples() : 0;
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if (backend_spec.samples == 0) backend_spec.samples = 100;
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DEBUG.writeln("Backend audio specification:");
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DEBUG.writefln("\tFormat: %s", sdl_to_str(backend_spec.format).c_str());
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DEBUG.writefln("\tChannels: %d", backend_spec.channels);
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DEBUG.writefln("\tSample rate: %d", backend_spec.freq);
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DEBUG.writefln("\tSamples: %d", backend_spec.samples);
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if (sdl_stream != nullptr) {
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SDL_FreeAudioStream(sdl_stream);
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}
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sdl_stream = SDL_NewAudioStream(backend_spec.format, backend_spec.channels, backend_spec.freq, spec.format, spec.channels, spec.freq);
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if (sdl_stream == nullptr) {
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ERROR.writefln("SDL_NewAudioStream: %s", SDL_GetError());
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DEBUG.writefln("format: AUDIO_%s%d%s", sample_fmt.is_float ? "F" : sample_fmt.is_signed ? "S" : "U", sample_fmt.size * 8, sample_fmt.endian ? "MSB" : "LSB");
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set_error("Failed to create SDL audio stream");
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set_signal(PlaybackSignalErrorOccurred);
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}
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size_t required_size = sample_fmt.size * backend_spec.samples;
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st->setChannels(spec.channels);
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st->setRate(spec.freq);
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st->flush();
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backend_spec.size = required_size;
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bufsize = backend_spec.size;
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buf = (Uint8*)malloc(bufsize);
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if (buf == nullptr) {
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ERROR.writeln("Failed to allocate memory for playback!");
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set_error("Failed to allocate memory for playback!");
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set_signal(PlaybackSignalErrorOccurred);
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bufsize = 0;
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}
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delete backend_spec_proxy;
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playback_ready.store(true);
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} else {
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set_error("Failed to create playback backend.");
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set_signal(PlaybackSignalErrorOccurred);
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delete process;
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process = nullptr;
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}
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SDL_UnlockAudioDevice(device);
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load_finished.store(true);
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flag_mutex.lock();
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stopped.store(false);
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paused = false;
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just_started.store(true);
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flag_mutex.unlock();
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}
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void PlaybackInstance::Unload() {
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if (process == nullptr) return;
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SDL_LockAudioDevice(device);
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delete process;
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process = nullptr;
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SDL_FreeAudioStream(sdl_stream);
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sdl_stream = nullptr;
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if (buf) free(buf);
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buf = nullptr;
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SDL_UnlockAudioDevice(device);
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}
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void PlaybackInstance::UpdateST() {
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bool any_changed = false;
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if (speed > 0.0f && speed_changed.exchange(false)) {
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any_changed = true;
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st->setRate(speed);
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set_signal(PlaybackSignalSpeedChanged);
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}
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if (tempo > 0.0f && tempo_changed.exchange(false)) {
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any_changed = true;
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st->setTempo(tempo);
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set_signal(PlaybackSignalTempoChanged);
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}
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if (pitch > 0.0f && pitch_changed.exchange(false)) {
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any_changed = true;
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st->setPitch(pitch);
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set_signal(PlaybackSignalPitchChanged);
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}
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if (any_changed && process != nullptr) {
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process->set_rate(st->getInputOutputSampleRatio());
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}
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}
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double PlaybackInstance::GetMaxSeconds() {
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return std::max((double)(MaxSpeed * MaxTempo), st->getInputOutputSampleRatio());
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}
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void PlaybackInstance::InitLoopFunction() {
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bool reload = false;
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init_audio_data();
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speed_changed.store(true);
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tempo_changed.store(true);
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pitch_changed.store(true);
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playback_ready.store(false);
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if (!SDL_WasInit(SDL_INIT_AUDIO)) {
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if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
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ERROR.writefln("Error initializing SDL: '%s'", SDL_GetError());
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set_error("Failed to initialize SDL!");
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return;
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}
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}
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SDL_AudioSpec obtained;
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SDL_AudioSpec desired;
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desired.format = SDL_SAMPLE_FMT;
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desired.freq = 48000;
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desired.samples = 400;
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desired.channels = 2;
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desired.callback = PlaybackInstance::SDLCallback;
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desired.userdata = this;
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st = new SoundTouch();
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#ifdef USE_SDL
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if ((device = SDL_OpenAudioDevice(nullptr, 0, &desired, &obtained, SDL_AUDIO_ALLOW_CHANNELS_CHANGE|SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_SAMPLES_CHANGE)) == 0) {
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ERROR.writefln("Error opening audio device: '%s'", SDL_GetError());
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set_error("Failed to open audio device!");
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running = false;
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loop_started = false;
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return;
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}
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SDL_PauseAudioDevice(device, 0);
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#elif defined(USE_OBOE)
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oboe::AudioStreamBuilder builder;
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builder.setDirection(oboe::Direction::Output);
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builder.setSharingMode(oboe::SharingMode::Shared);
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builder.setPerformanceMode(oboe::PerformanceMode::None);
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builder.setFormat(SAMPLE_FMT);
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builder.setDataCallback(this);
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auto res = builder.openStream(ostream);
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if (res != oboe::Result::OK) {
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ERROR.writefln("Error opening audio device.");
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set_error("Failed to open audio device!");
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running = false;
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loop_started = false;
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return;
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}
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obtained = desired;
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obtained.channels = ostream->getChannelCount();
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obtained.freq = ostream->getSampleRate();
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auto bufferFrames = ostream->getBufferSizeInFrames();
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auto bytesPerFrame = ostream->getBytesPerFrame();
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auto bytesPerSample = ostream->getBytesPerSample();
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obtained.size = bufferFrames * bytesPerFrame;
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obtained.samples = obtained.size / bytesPerSample;
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oboe::AudioFormat format = ostream->getFormat();
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DEBUG.writefln("About to start audio stream.\n\
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Format: %s\n\
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Channel count: %u\n\
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Sample rate: %u\n\
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Buffer size (frames): %u\n\
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Bytes per frame: %u\n\
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Total bytes: %u\n\
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Bytes per sample: %u\n\
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Total samples: %u"
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, oboe::convertToText(format)
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, obtained.channels
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, obtained.freq
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, bufferFrames
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, bytesPerFrame
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, obtained.size
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, bytesPerSample
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, obtained.samples
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);
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ostream->requestStart();
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#else
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#error Invalid configuration detected.
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#endif
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spec = obtained;
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st->setSampleRate(spec.freq);
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st->setChannels(spec.channels);
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UpdateST();
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reload = false;
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playback_ready.store(false);
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flag_mutex.lock();
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this->position = 0.0;
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seeking.store(false);
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paused = true;
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flag_mutex.unlock();
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playback_ready.store(false);
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length = 0.0;
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memset(&backend_spec, 0, sizeof(backend_spec));
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if (sdl_stream) SDL_FreeAudioStream(sdl_stream);
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sdl_stream = nullptr;
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bufsize = 0;
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if (buf) free((void*)buf);
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buf = nullptr;
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if (process) delete process;
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process = nullptr;
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stream_changed.store(false);
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file_changed.store(false);
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load_requested.store(false);
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current_file = {};
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current_stream = -1;
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current_title = {};
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seeking.store(false);
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pause_changed.store(false);
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just_stopped.store(true);
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just_started.store(false);
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stopped.store(true);
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set_signal(PlaybackSignalStarted);
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load_finished.store(true);
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}
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void PlaybackInstance::LoopFunction() {
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if (file_changed.exchange(false) || load_requested.exchange(false)) {
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Unload();
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Load(filePath.c_str(), 0);
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if (process && process->process_running()) {
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playback_ready.store(true);
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} else {
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playback_ready.store(false);
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}
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load_finished.store(true);
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just_started.store(true);
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}
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if (stream_changed.exchange(false)) {
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current_file_mutex.lock();
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if (current_file.has_value()) {
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std::string file = current_file.value();
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if (current_stream >= streams.size() || current_stream < 0 ||
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streams[current_stream].name == "" || streams[current_stream].length <= 0) {
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if (stream != nullptr) {
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current_stream = stream->stream_index;
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} else {
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current_stream = 0;
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}
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} else {
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SDL_LockAudioDevice(device);
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if (process && process->process_running()) process->set_stream_idx(current_stream);
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SDL_UnlockAudioDevice(device);
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}
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if (process && process->process_running()) {
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playback_ready.store(true);
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} else {
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playback_ready.store(false);
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}
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}
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current_file_mutex.unlock();
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}
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if (flag_mutex.try_lock()) {
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if (seeking.exchange(false)) {
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if (process && process->process_running()) process->set_position(this->position);
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set_signal(PlaybackSignalSeeked);
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}
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if (pause_changed.exchange(false) || just_stopped.exchange(false) || just_started.exchange(false)) {
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SDL_PauseAudioDevice(device, (stopped.load() || paused) ? 1 : 0);
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if (paused) {
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set_signal(PlaybackSignalPaused);
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} else {
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set_signal(PlaybackSignalResumed);
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}
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}
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if (update.exchange(false)) {
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SDL_LockAudioDevice(device);
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real_volume = volume / 100.0;
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UpdateST();
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SDL_UnlockAudioDevice(device);
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}
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flag_mutex.unlock();
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}
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if (process) {
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position = process->get_position();
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} else {
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position = 0.0;
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}
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}
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void PlaybackInstance::DeinitLoopFunction() {
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playback_ready.store(false);
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// ====
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Unload();
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#ifdef USE_SDL
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SDL_CloseAudioDevice(device);
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#elif defined(USE_OBOE)
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if (ostream && ostream->getState() != oboe::StreamState::Closed) {
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ostream->stop();
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ostream->close();
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}
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ostream.reset();
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#endif
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SDL_QuitSubSystem(SDL_INIT_AUDIO);
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delete st;
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st = nullptr;
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if (buf) free(buf);
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current_file_mutex.lock();
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current_file = {};
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current_file_mutex.unlock();
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set_signal(PlaybackSignalStopped);
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}
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void PlaybackInstance::ThreadFunc() {
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#ifdef __linux__
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pthread_setname_np(pthread_self(), "Playback control thread");
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#endif
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start_loop();
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while (running && loop_started) {
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LoopHook();
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std::this_thread::sleep_for(20ms);
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}
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stop_loop();
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}
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PlaybackInstance::PlaybackInstance() {
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running = false;
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paused = true;
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position = 0;
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sdl_stream = nullptr;
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length = 0;
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volume = 100.0;
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real_volume = 1.0;
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speed = 1.0;
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pitch = 1.0;
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tempo = 1.0;
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prev_speed = -1.0;
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prev_pitch = -1.0;
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prev_tempo = -1.0;
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buf = nullptr;
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tempo_changed.store(true);
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speed_changed.store(true);
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pitch_changed.store(true);
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current_file = {};
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playback_ready = false;
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bufsize = 0;
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process = nullptr;
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running.store(true);
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#if NO_THREADS
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start_loop();
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#else
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thread = std::thread(&PlaybackInstance::ThreadFunc, this);
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loop_started = true;
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#endif
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while (loop_started && !load_finished.exchange(false)) {
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#if NO_THREADS
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LoopHook();
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#endif
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std::this_thread::sleep_for(20ms);
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}
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load_finished.store(false);
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}
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std::optional<std::string> PlaybackInstance::get_current_file() {
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current_file_mutex.lock();
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std::optional<std::string> output = current_file;
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current_file_mutex.unlock();
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return output;
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}
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std::optional<std::string> PlaybackInstance::get_current_title() {
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current_file_mutex.lock();
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std::optional<std::string> output = current_title;
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current_file_mutex.unlock();
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return output;
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}
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PlaybackInstance::~PlaybackInstance() {
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Stop();
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running.store(false);
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#ifdef NO_THREADS
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stop_loop();
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#else
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thread.join();
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#endif
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}
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void PlaybackInstance::Load(std::string filePath) {
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load_finished.store(false);
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this->filePath = filePath;
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INFO.writefln("Loading %s...", filePath.c_str());
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flag_mutex.lock();
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this->position = 0.0;
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seeking.store(true);
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paused = true;
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Update();
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flag_mutex.unlock();
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file_changed.store(true);
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wait([this]() {
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return load_finished.load();
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});
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}
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void PlaybackInstance::Start(std::string filePath, int streamIdx) {
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load_finished.store(false);
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Load(filePath);
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INFO.writefln("Playing %s...", filePath.c_str());
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flag_mutex.lock();
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this->position = 0.0;
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seeking.store(true);
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paused = false;
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current_stream = streamIdx;
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stream_changed.store(true);
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Update();
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flag_mutex.unlock();
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|
wait([this]() {
|
|
return load_finished.load();
|
|
});
|
|
}
|
|
void PlaybackInstance::play_stream(int idx) {
|
|
flag_mutex.lock();
|
|
this->position = 0.0;
|
|
seeking.store(true);
|
|
paused = false;
|
|
current_stream = idx;
|
|
stream_changed.store(true);
|
|
Update();
|
|
just_started.store(true);
|
|
flag_mutex.unlock();
|
|
}
|
|
double PlaybackInstance::GetPosition() {
|
|
return position;
|
|
}
|
|
double PlaybackInstance::GetLength() {
|
|
return length;
|
|
}
|
|
|
|
void PlaybackInstance::Seek(double position) {
|
|
flag_mutex.lock();
|
|
this->position = position;
|
|
seeking.store(true);
|
|
flag_mutex.unlock();
|
|
}
|
|
|
|
void PlaybackInstance::Pause() {
|
|
flag_mutex.lock();
|
|
paused = !paused;
|
|
pause_changed.store(true);
|
|
flag_mutex.unlock();
|
|
}
|
|
|
|
bool PlaybackInstance::IsPaused() {
|
|
return paused;
|
|
}
|
|
|
|
void PlaybackInstance::Stop() {
|
|
flag_mutex.lock();
|
|
stopped.store(true);
|
|
just_started.store(false);
|
|
just_stopped.store(true);
|
|
flag_mutex.unlock();
|
|
}
|
|
void PlaybackInstance::Update() {
|
|
if (prev_pitch != pitch) {
|
|
pitch_changed.store(true);
|
|
}
|
|
if (prev_speed != speed) {
|
|
speed_changed.store(true);
|
|
}
|
|
if (prev_tempo != tempo) {
|
|
tempo_changed.store(true);
|
|
}
|
|
update.store(true);
|
|
}
|
|
|
|
bool PlaybackInstance::IsStopped() {
|
|
return !running;
|
|
}
|
|
void Playback::set_signal(uint16_t signal) {
|
|
signal_mutex.lock();
|
|
for (auto &kv : signals_occurred) {
|
|
kv.second |= signal;
|
|
}
|
|
signal_mutex.unlock();
|
|
}
|
|
uint16_t Playback::handle_signals(uint16_t signals, void *handle) {
|
|
if (signal_mutex.try_lock()) {
|
|
if (!signals_occurred.contains(handle)) {
|
|
signals_occurred[handle] = PlaybackSignalNone;
|
|
}
|
|
uint16_t output = signals_occurred[handle];
|
|
signals_occurred[handle] &= ~output;
|
|
signal_mutex.unlock();
|
|
return output;
|
|
} else {
|
|
return PlaybackSignalNone;
|
|
}
|
|
}
|
|
void Playback::register_handle(void *handle) {
|
|
signal_mutex.lock();
|
|
if (!signals_occurred.contains(handle)) {
|
|
signals_occurred[handle] = PlaybackSignalNone;
|
|
}
|
|
signal_mutex.unlock();
|
|
error_mutex.lock();
|
|
if (!errors_occurred.contains(handle)) {
|
|
std::deque<std::string> new_value;
|
|
for (size_t i = 0; i < errors.size(); i++) {
|
|
new_value.push_back(errors[i]);
|
|
}
|
|
errors_occurred[handle] = new_value;
|
|
}
|
|
error_mutex.unlock();
|
|
}
|
|
|
|
void Playback::unregister_handle(void *handle) {
|
|
signal_mutex.lock();
|
|
if (signals_occurred.contains(handle)) {
|
|
signals_occurred.erase(handle);
|
|
}
|
|
signal_mutex.unlock();
|
|
error_mutex.lock();
|
|
if (errors_occurred.contains(handle)) {
|
|
errors_occurred.erase(handle);
|
|
}
|
|
error_mutex.unlock();
|
|
}
|
|
void PlaybackInstance::SetTempo(float tempo) {
|
|
this->tempo = tempo;
|
|
Update();
|
|
}
|
|
void PlaybackInstance::SetPitch(float pitch) {
|
|
this->pitch = pitch;
|
|
Update();
|
|
}
|
|
void PlaybackInstance::SetSpeed(float speed) {
|
|
this->speed = speed;
|
|
Update();
|
|
}
|
|
void PlaybackInstance::SetVolume(float volume) {
|
|
this->volume = volume;
|
|
Update();
|
|
}
|
|
float PlaybackInstance::GetTempo() {
|
|
return tempo;
|
|
}
|
|
float PlaybackInstance::GetPitch() {
|
|
return pitch;
|
|
}
|
|
float PlaybackInstance::GetSpeed() {
|
|
return speed;
|
|
}
|
|
float PlaybackInstance::GetVolume() {
|
|
return volume;
|
|
}
|
|
void Playback::set_error(std::string desc) {
|
|
error_mutex.lock();
|
|
errors.push_back(desc);
|
|
for (auto &kv : errors_occurred) {
|
|
kv.second.push_front(desc);
|
|
}
|
|
error_mutex.unlock();
|
|
set_signal(PlaybackSignalErrorOccurred);
|
|
}
|
|
Playback *Playback::Create(bool *daemon_found, bool daemon) {
|
|
#ifdef DBUS_ENABLED
|
|
auto *dbus_proxy = DBusAPISender::Create();
|
|
if (dbus_proxy != nullptr) {
|
|
if (daemon_found != nullptr) {
|
|
*daemon_found = dbus_proxy->IsDaemon();
|
|
}
|
|
DEBUG.writefln("DBus proxy daemon found: %s", *daemon_found ? "true" : "false");
|
|
if (daemon) {
|
|
delete dbus_proxy;
|
|
return nullptr;
|
|
} else {
|
|
return dbus_proxy;
|
|
}
|
|
}
|
|
if (daemon_found != nullptr) {
|
|
*daemon_found = false;
|
|
}
|
|
#endif
|
|
DEBUG.writeln("Creating new playback instance.");
|
|
return new PlaybackInstance();
|
|
}
|
|
std::vector<PlaybackStream> PlaybackInstance::get_streams() {
|
|
std::vector<PlaybackStream> output;
|
|
for (auto stream : streams) {
|
|
output.push_back(stream);
|
|
}
|
|
return output;
|
|
}
|
|
int PlaybackInstance::get_current_stream() {
|
|
return current_stream;
|
|
}
|