/*************************************************************************/ /* audio_stream_sample.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2018 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 AUDIOSTREAMSAMPLE_H #define AUDIOSTREAMSAMPLE_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; int32_t predictor; /* values at loop point */ int16_t loop_step_index; int32_t loop_predictor; int32_t last_nibble; int32_t loop_pos; int32_t window_ofs; } ima_adpcm[2]; int64_t offset; int sign; bool active; friend class AudioStreamSample; Ref<AudioStreamSample> base; template <class Depth, bool is_stereo, bool is_ima_adpcm> 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); virtual void stop(); virtual bool is_playing() const; virtual int get_loop_count() const; //times it looped virtual float get_playback_position() const; virtual void seek(float p_time); virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames); 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_PING_PONG }; private: friend class AudioStreamPlaybackSample; enum { DATA_PAD = 16 //padding for interpolation }; Format format; LoopMode loop_mode; bool stereo; int loop_begin; int loop_end; int mix_rate; void *data; uint32_t data_bytes; 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; //if supported, otherwise return 0 void set_data(const PoolVector<uint8_t> &p_data); PoolVector<uint8_t> get_data() const; virtual Ref<AudioStreamPlayback> instance_playback(); virtual String get_stream_name() const; AudioStreamSample(); ~AudioStreamSample(); }; VARIANT_ENUM_CAST(AudioStreamSample::Format) VARIANT_ENUM_CAST(AudioStreamSample::LoopMode) #endif // AUDIOSTREAMSample_H