/*************************************************************************/ /* audio_stream_sample.h */ /*************************************************************************/ /* 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. */ /*************************************************************************/ #ifndef AUDIO_STREAM_SAMPLE_H #define AUDIO_STREAM_SAMPLE_H #include "servers/audio/audio_stream.h" class AudioStreamSample; class AudioStreamPlaybackSample : public AudioStreamPlayback { GDCLASS(AudioStreamPlaybackSample, AudioStreamPlayback); enum { MIX_FRAC_BITS = 13, MIX_FRAC_LEN = (1 << MIX_FRAC_BITS), MIX_FRAC_MASK = MIX_FRAC_LEN - 1, }; struct IMA_ADPCM_State { int16_t step_index = 0; int32_t predictor = 0; /* values at loop point */ int16_t loop_step_index = 0; int32_t loop_predictor = 0; int32_t last_nibble = 0; int32_t loop_pos = 0; int32_t window_ofs = 0; } ima_adpcm[2]; int64_t offset = 0; int sign = 1; bool active = false; friend class AudioStreamSample; Ref base; template void do_resample(const Depth *p_src, AudioFrame *p_dst, int64_t &offset, int32_t &increment, uint32_t amount, IMA_ADPCM_State *ima_adpcm); public: virtual void start(float p_from_pos = 0.0) override; virtual void stop() override; virtual bool is_playing() const override; virtual int get_loop_count() const override; //times it looped virtual float get_playback_position() const override; virtual void seek(float p_time) override; virtual int mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override; AudioStreamPlaybackSample(); }; class AudioStreamSample : public AudioStream { GDCLASS(AudioStreamSample, AudioStream); RES_BASE_EXTENSION("sample") public: enum Format { FORMAT_8_BITS, FORMAT_16_BITS, FORMAT_IMA_ADPCM }; enum LoopMode { LOOP_DISABLED, LOOP_FORWARD, LOOP_PINGPONG, LOOP_BACKWARD }; private: friend class AudioStreamPlaybackSample; enum { DATA_PAD = 16 //padding for interpolation }; Format format = FORMAT_8_BITS; LoopMode loop_mode = LOOP_DISABLED; bool stereo = false; int loop_begin = 0; int loop_end = 0; int mix_rate = 44100; void *data = nullptr; uint32_t data_bytes = 0; protected: static void _bind_methods(); public: void set_format(Format p_format); Format get_format() const; void set_loop_mode(LoopMode p_loop_mode); LoopMode get_loop_mode() const; void set_loop_begin(int p_frame); int get_loop_begin() const; void set_loop_end(int p_frame); int get_loop_end() const; void set_mix_rate(int p_hz); int get_mix_rate() const; void set_stereo(bool p_enable); bool is_stereo() const; virtual float get_length() const override; //if supported, otherwise return 0 virtual bool is_monophonic() const override; void set_data(const Vector &p_data); Vector get_data() const; Error save_to_wav(const String &p_path); virtual Ref instance_playback() override; virtual String get_stream_name() const override; AudioStreamSample(); ~AudioStreamSample(); }; VARIANT_ENUM_CAST(AudioStreamSample::Format) VARIANT_ENUM_CAST(AudioStreamSample::LoopMode) #endif // AUDIO_STREAM_SAMPLE_H