mirror of
https://github.com/godotengine/godot.git
synced 2024-12-27 10:30:26 +08:00
351 lines
11 KiB
C++
351 lines
11 KiB
C++
/**************************************************************************/
|
|
/* audio_stream_mp3.cpp */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/**************************************************************************/
|
|
|
|
#define MINIMP3_FLOAT_OUTPUT
|
|
#define MINIMP3_IMPLEMENTATION
|
|
#define MINIMP3_NO_STDIO
|
|
|
|
#include "audio_stream_mp3.h"
|
|
|
|
#include "core/io/file_access.h"
|
|
|
|
int AudioStreamPlaybackMP3::_mix_internal(AudioFrame *p_buffer, int p_frames) {
|
|
if (!active) {
|
|
return 0;
|
|
}
|
|
|
|
int todo = p_frames;
|
|
|
|
int frames_mixed_this_step = p_frames;
|
|
|
|
int beat_length_frames = -1;
|
|
bool use_loop = looping_override ? looping : mp3_stream->loop;
|
|
|
|
bool beat_loop = use_loop && mp3_stream->get_bpm() > 0 && mp3_stream->get_beat_count() > 0;
|
|
if (beat_loop) {
|
|
beat_length_frames = mp3_stream->get_beat_count() * mp3_stream->sample_rate * 60 / mp3_stream->get_bpm();
|
|
}
|
|
|
|
while (todo && active) {
|
|
mp3dec_frame_info_t frame_info;
|
|
mp3d_sample_t *buf_frame = nullptr;
|
|
|
|
int samples_mixed = mp3dec_ex_read_frame(mp3d, &buf_frame, &frame_info, mp3_stream->channels);
|
|
|
|
if (samples_mixed) {
|
|
p_buffer[p_frames - todo] = AudioFrame(buf_frame[0], buf_frame[samples_mixed - 1]);
|
|
if (loop_fade_remaining < FADE_SIZE) {
|
|
p_buffer[p_frames - todo] += loop_fade[loop_fade_remaining] * (float(FADE_SIZE - loop_fade_remaining) / float(FADE_SIZE));
|
|
loop_fade_remaining++;
|
|
}
|
|
--todo;
|
|
++frames_mixed;
|
|
|
|
if (beat_loop && (int)frames_mixed >= beat_length_frames) {
|
|
for (int i = 0; i < FADE_SIZE; i++) {
|
|
samples_mixed = mp3dec_ex_read_frame(mp3d, &buf_frame, &frame_info, mp3_stream->channels);
|
|
loop_fade[i] = AudioFrame(buf_frame[0], buf_frame[samples_mixed - 1]);
|
|
if (!samples_mixed) {
|
|
break;
|
|
}
|
|
}
|
|
loop_fade_remaining = 0;
|
|
seek(mp3_stream->loop_offset);
|
|
loops++;
|
|
}
|
|
}
|
|
|
|
else {
|
|
//EOF
|
|
if (use_loop) {
|
|
seek(mp3_stream->loop_offset);
|
|
loops++;
|
|
} else {
|
|
frames_mixed_this_step = p_frames - todo;
|
|
//fill remainder with silence
|
|
for (int i = p_frames - todo; i < p_frames; i++) {
|
|
p_buffer[i] = AudioFrame(0, 0);
|
|
}
|
|
active = false;
|
|
todo = 0;
|
|
}
|
|
}
|
|
}
|
|
return frames_mixed_this_step;
|
|
}
|
|
|
|
float AudioStreamPlaybackMP3::get_stream_sampling_rate() {
|
|
return mp3_stream->sample_rate;
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::start(double p_from_pos) {
|
|
active = true;
|
|
seek(p_from_pos);
|
|
loops = 0;
|
|
begin_resample();
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::stop() {
|
|
active = false;
|
|
}
|
|
|
|
bool AudioStreamPlaybackMP3::is_playing() const {
|
|
return active;
|
|
}
|
|
|
|
int AudioStreamPlaybackMP3::get_loop_count() const {
|
|
return loops;
|
|
}
|
|
|
|
double AudioStreamPlaybackMP3::get_playback_position() const {
|
|
return double(frames_mixed) / mp3_stream->sample_rate;
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::seek(double p_time) {
|
|
if (!active) {
|
|
return;
|
|
}
|
|
|
|
if (p_time >= mp3_stream->get_length()) {
|
|
p_time = 0;
|
|
}
|
|
|
|
frames_mixed = uint32_t(mp3_stream->sample_rate * p_time);
|
|
mp3dec_ex_seek(mp3d, (uint64_t)frames_mixed * mp3_stream->channels);
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::tag_used_streams() {
|
|
mp3_stream->tag_used(get_playback_position());
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::set_is_sample(bool p_is_sample) {
|
|
_is_sample = p_is_sample;
|
|
}
|
|
|
|
bool AudioStreamPlaybackMP3::get_is_sample() const {
|
|
return _is_sample;
|
|
}
|
|
|
|
Ref<AudioSamplePlayback> AudioStreamPlaybackMP3::get_sample_playback() const {
|
|
return sample_playback;
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::set_sample_playback(const Ref<AudioSamplePlayback> &p_playback) {
|
|
sample_playback = p_playback;
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::set_parameter(const StringName &p_name, const Variant &p_value) {
|
|
if (p_name == SNAME("looping")) {
|
|
if (p_value == Variant()) {
|
|
looping_override = false;
|
|
looping = false;
|
|
} else {
|
|
looping_override = true;
|
|
looping = p_value;
|
|
}
|
|
}
|
|
}
|
|
|
|
Variant AudioStreamPlaybackMP3::get_parameter(const StringName &p_name) const {
|
|
if (looping_override && p_name == SNAME("looping")) {
|
|
return looping;
|
|
}
|
|
return Variant();
|
|
}
|
|
|
|
AudioStreamPlaybackMP3::~AudioStreamPlaybackMP3() {
|
|
if (mp3d) {
|
|
mp3dec_ex_close(mp3d);
|
|
memfree(mp3d);
|
|
}
|
|
}
|
|
|
|
Ref<AudioStreamPlayback> AudioStreamMP3::instantiate_playback() {
|
|
Ref<AudioStreamPlaybackMP3> mp3s;
|
|
|
|
ERR_FAIL_COND_V_MSG(data.is_empty(), mp3s,
|
|
"This AudioStreamMP3 does not have an audio file assigned "
|
|
"to it. AudioStreamMP3 should not be created from the "
|
|
"inspector or with `.new()`. Instead, load an audio file.");
|
|
|
|
mp3s.instantiate();
|
|
mp3s->mp3_stream = Ref<AudioStreamMP3>(this);
|
|
mp3s->mp3d = (mp3dec_ex_t *)memalloc(sizeof(mp3dec_ex_t));
|
|
|
|
int errorcode = mp3dec_ex_open_buf(mp3s->mp3d, data.ptr(), data_len, MP3D_SEEK_TO_SAMPLE);
|
|
|
|
mp3s->frames_mixed = 0;
|
|
mp3s->active = false;
|
|
mp3s->loops = 0;
|
|
|
|
if (errorcode) {
|
|
ERR_FAIL_COND_V(errorcode, Ref<AudioStreamPlaybackMP3>());
|
|
}
|
|
|
|
return mp3s;
|
|
}
|
|
|
|
String AudioStreamMP3::get_stream_name() const {
|
|
return ""; //return stream_name;
|
|
}
|
|
|
|
void AudioStreamMP3::clear_data() {
|
|
data.clear();
|
|
}
|
|
|
|
void AudioStreamMP3::set_data(const Vector<uint8_t> &p_data) {
|
|
int src_data_len = p_data.size();
|
|
const uint8_t *src_datar = p_data.ptr();
|
|
|
|
mp3dec_ex_t mp3d;
|
|
int err = mp3dec_ex_open_buf(&mp3d, src_datar, src_data_len, MP3D_SEEK_TO_SAMPLE);
|
|
ERR_FAIL_COND_MSG(err || mp3d.info.hz == 0, "Failed to decode mp3 file. Make sure it is a valid mp3 audio file.");
|
|
|
|
channels = mp3d.info.channels;
|
|
sample_rate = mp3d.info.hz;
|
|
length = float(mp3d.samples) / (sample_rate * float(channels));
|
|
|
|
mp3dec_ex_close(&mp3d);
|
|
|
|
clear_data();
|
|
|
|
data.resize(src_data_len);
|
|
memcpy(data.ptrw(), src_datar, src_data_len);
|
|
data_len = src_data_len;
|
|
}
|
|
|
|
Vector<uint8_t> AudioStreamMP3::get_data() const {
|
|
return data;
|
|
}
|
|
|
|
void AudioStreamMP3::set_loop(bool p_enable) {
|
|
loop = p_enable;
|
|
}
|
|
|
|
bool AudioStreamMP3::has_loop() const {
|
|
return loop;
|
|
}
|
|
|
|
void AudioStreamMP3::set_loop_offset(double p_seconds) {
|
|
loop_offset = p_seconds;
|
|
}
|
|
|
|
double AudioStreamMP3::get_loop_offset() const {
|
|
return loop_offset;
|
|
}
|
|
|
|
double AudioStreamMP3::get_length() const {
|
|
return length;
|
|
}
|
|
|
|
bool AudioStreamMP3::is_monophonic() const {
|
|
return false;
|
|
}
|
|
|
|
void AudioStreamMP3::get_parameter_list(List<Parameter> *r_parameters) {
|
|
r_parameters->push_back(Parameter(PropertyInfo(Variant::BOOL, "looping", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_CHECKABLE), Variant()));
|
|
}
|
|
|
|
void AudioStreamMP3::set_bpm(double p_bpm) {
|
|
ERR_FAIL_COND(p_bpm < 0);
|
|
bpm = p_bpm;
|
|
emit_changed();
|
|
}
|
|
|
|
double AudioStreamMP3::get_bpm() const {
|
|
return bpm;
|
|
}
|
|
|
|
void AudioStreamMP3::set_beat_count(int p_beat_count) {
|
|
ERR_FAIL_COND(p_beat_count < 0);
|
|
beat_count = p_beat_count;
|
|
emit_changed();
|
|
}
|
|
|
|
int AudioStreamMP3::get_beat_count() const {
|
|
return beat_count;
|
|
}
|
|
|
|
void AudioStreamMP3::set_bar_beats(int p_bar_beats) {
|
|
ERR_FAIL_COND(p_bar_beats < 0);
|
|
bar_beats = p_bar_beats;
|
|
emit_changed();
|
|
}
|
|
|
|
int AudioStreamMP3::get_bar_beats() const {
|
|
return bar_beats;
|
|
}
|
|
|
|
Ref<AudioSample> AudioStreamMP3::generate_sample() const {
|
|
Ref<AudioSample> sample;
|
|
sample.instantiate();
|
|
sample->stream = this;
|
|
sample->loop_mode = loop
|
|
? AudioSample::LoopMode::LOOP_FORWARD
|
|
: AudioSample::LoopMode::LOOP_DISABLED;
|
|
sample->loop_begin = loop_offset;
|
|
sample->loop_end = 0;
|
|
return sample;
|
|
}
|
|
|
|
void AudioStreamMP3::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("set_data", "data"), &AudioStreamMP3::set_data);
|
|
ClassDB::bind_method(D_METHOD("get_data"), &AudioStreamMP3::get_data);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_loop", "enable"), &AudioStreamMP3::set_loop);
|
|
ClassDB::bind_method(D_METHOD("has_loop"), &AudioStreamMP3::has_loop);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_loop_offset", "seconds"), &AudioStreamMP3::set_loop_offset);
|
|
ClassDB::bind_method(D_METHOD("get_loop_offset"), &AudioStreamMP3::get_loop_offset);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_bpm", "bpm"), &AudioStreamMP3::set_bpm);
|
|
ClassDB::bind_method(D_METHOD("get_bpm"), &AudioStreamMP3::get_bpm);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_beat_count", "count"), &AudioStreamMP3::set_beat_count);
|
|
ClassDB::bind_method(D_METHOD("get_beat_count"), &AudioStreamMP3::get_beat_count);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_bar_beats", "count"), &AudioStreamMP3::set_bar_beats);
|
|
ClassDB::bind_method(D_METHOD("get_bar_beats"), &AudioStreamMP3::get_bar_beats);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::PACKED_BYTE_ARRAY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR), "set_data", "get_data");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "bpm", PROPERTY_HINT_RANGE, "0,400,0.01,or_greater"), "set_bpm", "get_bpm");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "beat_count", PROPERTY_HINT_RANGE, "0,512,1,or_greater"), "set_beat_count", "get_beat_count");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "bar_beats", PROPERTY_HINT_RANGE, "2,32,1,or_greater"), "set_bar_beats", "get_bar_beats");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "loop"), "set_loop", "has_loop");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "loop_offset"), "set_loop_offset", "get_loop_offset");
|
|
}
|
|
|
|
AudioStreamMP3::AudioStreamMP3() {
|
|
}
|
|
|
|
AudioStreamMP3::~AudioStreamMP3() {
|
|
clear_data();
|
|
}
|