We've been using standard C library functions `memcpy`/`memset` for these since
2016 with 67f65f6639
.
There was still the possibility for third-party platform ports to override the
definitions with a custom header, but this doesn't seem useful anymore.
Backport of #48239.
231 lines
7.1 KiB
C++
231 lines
7.1 KiB
C++
/*************************************************************************/
|
|
/* audio_stream_mp3.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* 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_ONLY_MP3
|
|
#define MINIMP3_FLOAT_OUTPUT
|
|
#define MINIMP3_IMPLEMENTATION
|
|
#define MINIMP3_NO_STDIO
|
|
|
|
#include "audio_stream_mp3.h"
|
|
|
|
#include "core/os/file_access.h"
|
|
|
|
void AudioStreamPlaybackMP3::_mix_internal(AudioFrame *p_buffer, int p_frames) {
|
|
ERR_FAIL_COND(!active);
|
|
|
|
int todo = p_frames;
|
|
|
|
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]);
|
|
--todo;
|
|
++frames_mixed;
|
|
}
|
|
|
|
else {
|
|
//EOF
|
|
if (mp3_stream->loop) {
|
|
seek(mp3_stream->loop_offset);
|
|
loops++;
|
|
} else {
|
|
//fill remainder with silence
|
|
for (int i = p_frames - todo; i < p_frames; i++) {
|
|
p_buffer[i] = AudioFrame(0, 0);
|
|
}
|
|
active = false;
|
|
todo = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
float AudioStreamPlaybackMP3::get_stream_sampling_rate() {
|
|
return mp3_stream->sample_rate;
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::start(float 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;
|
|
}
|
|
|
|
float AudioStreamPlaybackMP3::get_playback_position() const {
|
|
return float(frames_mixed) / mp3_stream->sample_rate;
|
|
}
|
|
|
|
void AudioStreamPlaybackMP3::seek(float 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, frames_mixed * mp3_stream->channels);
|
|
}
|
|
|
|
AudioStreamPlaybackMP3::~AudioStreamPlaybackMP3() {
|
|
if (mp3d) {
|
|
mp3dec_ex_close(mp3d);
|
|
AudioServer::get_singleton()->audio_data_free(mp3d);
|
|
}
|
|
}
|
|
|
|
Ref<AudioStreamPlayback> AudioStreamMP3::instance_playback() {
|
|
Ref<AudioStreamPlaybackMP3> mp3s;
|
|
|
|
ERR_FAIL_COND_V_MSG(data == nullptr, 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.instance();
|
|
mp3s->mp3_stream = Ref<AudioStreamMP3>(this);
|
|
mp3s->mp3d = (mp3dec_ex_t *)AudioServer::get_singleton()->audio_data_alloc(sizeof(mp3dec_ex_t));
|
|
|
|
int errorcode = mp3dec_ex_open_buf(mp3s->mp3d, (const uint8_t *)data, 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() {
|
|
if (data) {
|
|
AudioServer::get_singleton()->audio_data_free(data);
|
|
data = nullptr;
|
|
data_len = 0;
|
|
}
|
|
}
|
|
|
|
void AudioStreamMP3::set_data(const PoolVector<uint8_t> &p_data) {
|
|
int src_data_len = p_data.size();
|
|
PoolVector<uint8_t>::Read src_datar = p_data.read();
|
|
|
|
mp3dec_ex_t mp3d;
|
|
int err = mp3dec_ex_open_buf(&mp3d, src_datar.ptr(), src_data_len, MP3D_SEEK_TO_SAMPLE);
|
|
ERR_FAIL_COND(err != 0);
|
|
|
|
channels = mp3d.info.channels;
|
|
sample_rate = mp3d.info.hz;
|
|
length = float(mp3d.samples) / (sample_rate * float(channels));
|
|
|
|
mp3dec_ex_close(&mp3d);
|
|
|
|
clear_data();
|
|
|
|
data = AudioServer::get_singleton()->audio_data_alloc(src_data_len, src_datar.ptr());
|
|
data_len = src_data_len;
|
|
}
|
|
|
|
PoolVector<uint8_t> AudioStreamMP3::get_data() const {
|
|
PoolVector<uint8_t> vdata;
|
|
|
|
if (data_len && data) {
|
|
vdata.resize(data_len);
|
|
{
|
|
PoolVector<uint8_t>::Write w = vdata.write();
|
|
memcpy(w.ptr(), data, data_len);
|
|
}
|
|
}
|
|
|
|
return vdata;
|
|
}
|
|
|
|
void AudioStreamMP3::set_loop(bool p_enable) {
|
|
loop = p_enable;
|
|
}
|
|
|
|
bool AudioStreamMP3::has_loop() const {
|
|
return loop;
|
|
}
|
|
|
|
void AudioStreamMP3::set_loop_offset(float p_seconds) {
|
|
loop_offset = p_seconds;
|
|
}
|
|
|
|
float AudioStreamMP3::get_loop_offset() const {
|
|
return loop_offset;
|
|
}
|
|
|
|
float AudioStreamMP3::get_length() const {
|
|
return length;
|
|
}
|
|
|
|
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);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::POOL_BYTE_ARRAY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "set_data", "get_data");
|
|
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "loop", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "set_loop", "has_loop");
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL, "loop_offset", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR), "set_loop_offset", "get_loop_offset");
|
|
}
|
|
|
|
AudioStreamMP3::AudioStreamMP3() {
|
|
}
|
|
|
|
AudioStreamMP3::~AudioStreamMP3() {
|
|
clear_data();
|
|
}
|