diff options
Diffstat (limited to 'modules/minimp3/audio_stream_mp3.cpp')
| -rw-r--r-- | modules/minimp3/audio_stream_mp3.cpp | 71 |
1 files changed, 70 insertions, 1 deletions
diff --git a/modules/minimp3/audio_stream_mp3.cpp b/modules/minimp3/audio_stream_mp3.cpp index c37bea519f..98bcdea8f4 100644 --- a/modules/minimp3/audio_stream_mp3.cpp +++ b/modules/minimp3/audio_stream_mp3.cpp @@ -46,6 +46,12 @@ int AudioStreamPlaybackMP3::_mix_internal(AudioFrame *p_buffer, int p_frames) { int frames_mixed_this_step = p_frames; + int beat_length_frames = -1; + bool beat_loop = mp3_stream->has_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; @@ -54,8 +60,25 @@ int AudioStreamPlaybackMP3::_mix_internal(AudioFrame *p_buffer, int p_frames) { 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 { @@ -117,6 +140,10 @@ void AudioStreamPlaybackMP3::seek(float 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()); +} + AudioStreamPlaybackMP3::~AudioStreamPlaybackMP3() { if (mp3d) { mp3dec_ex_close(mp3d); @@ -124,7 +151,7 @@ AudioStreamPlaybackMP3::~AudioStreamPlaybackMP3() { } } -Ref<AudioStreamPlayback> AudioStreamMP3::instance_playback() { +Ref<AudioStreamPlayback> AudioStreamMP3::instantiate_playback() { Ref<AudioStreamPlaybackMP3> mp3s; ERR_FAIL_COND_V_MSG(data.is_empty(), mp3s, @@ -206,6 +233,36 @@ bool AudioStreamMP3::is_monophonic() const { return false; } +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; +} + 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); @@ -216,7 +273,19 @@ void AudioStreamMP3::_bind_methods() { 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"); } |