GODOT IS OPEN SOURCE

1 files changed, 330 insertions, 0 deletions

diff --git a/scene/resources/gibberish_stream.cpp b/scene/resources/gibberish_stream.cpp
new file mode 100644
index 0000000000..5dc73fc98a
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+++ b/scene/resources/gibberish_stream.cpp
@@ -0,0 +1,330 @@
+/*************************************************************************/
+/*  gibberish_stream.cpp                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* 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.                */
+/*************************************************************************/
+#include "gibberish_stream.h"
+#include "servers/audio_server.h"
+
+int AudioStreamGibberish::get_channel_count() const {
+
+	return 1;
+}
+
+
+static float _get_vol_at_pos(int p_pos, int p_len, int p_x_fade) {
+
+	if (p_pos < p_x_fade)
+		return float(p_pos)/p_x_fade;
+	else if (p_pos>(p_len-p_x_fade))
+		return float(p_len-p_pos)/p_x_fade;
+	else
+		return 1.0;
+
+}
+ int AudioStreamGibberish::randomize() {
+
+	if (rand_idx==_rand_pool.size()) {
+
+		for(int i=0;i<_rand_pool.size();i++) {
+
+			SWAP(_rand_pool[i],_rand_pool[Math::rand()%_rand_pool.size()]);
+		}
+		rand_idx=0;
+	}
+
+	return _rand_pool[rand_idx++];
+}
+
+bool AudioStreamGibberish::mix(int32_t *p_buffer, int p_frames) {
+
+	if (!active)
+		return false;
+
+	zeromem(p_buffer,p_frames*sizeof(int32_t));
+
+	if (!paused && active_voices==0) {
+
+		active_voices=1;
+		playback[0].idx=randomize();
+		playback[0].fp_pos=0;
+		playback[0].scale=Math::random(1,1+pitch_random_scale);
+	}
+
+	for(int i=0;i<active_voices;i++) {
+
+		RID s = _samples[playback[i].idx]->get_rid();
+
+		uint64_t fp_pos=playback[i].fp_pos;
+		const void *data = AudioServer::get_singleton()->sample_get_data_ptr(s);
+		bool is16 = AudioServer::get_singleton()->sample_get_format(s)==AudioServer::SAMPLE_FORMAT_PCM16;
+		int skip = AudioServer::get_singleton()->sample_is_stereo(s) ? 1: 0;
+		uint64_t max = AudioServer::get_singleton()->sample_get_length(s) * uint64_t(FP_LEN);
+		int mrate = AudioServer::get_singleton()->sample_get_mix_rate(s) * pitch_scale * playback[i].scale;
+		uint64_t increment = uint64_t(mrate) * uint64_t(FP_LEN) / get_mix_rate();
+
+
+		float vol_begin = _get_vol_at_pos(fp_pos>>FP_BITS,max>>FP_BITS,xfade_time*mrate);
+		float vol_end = _get_vol_at_pos((fp_pos+p_frames*increment)>>FP_BITS,max>>FP_BITS,xfade_time*mrate);
+
+		int32_t vol = CLAMP(int32_t(vol_begin * 65535),0,65535);
+		int32_t vol_to = CLAMP(int32_t(vol_end * 65535),0,65535);
+		int32_t vol_inc = (vol_to-vol)/p_frames;
+
+		bool done=false;
+
+		if (is16) {
+
+			const int16_t *smp = (int16_t*)data;
+			for(int i=0;i<p_frames;i++) {
+
+				if (fp_pos >= max) {
+					done=true;
+					break;
+				}
+
+				int idx = (fp_pos>>FP_BITS)<<skip;
+				p_buffer[i]+=int32_t(smp[idx])*vol;
+				vol+=vol_inc;
+
+				fp_pos+=increment;
+			}
+		} else {
+
+			const int8_t *smp = (int8_t*)data;
+			for(int i=0;i<p_frames;i++) {
+
+				if (fp_pos >= max) {
+					done=true;
+					break;
+				}
+
+				int idx = (fp_pos>>FP_BITS)<<skip;
+				p_buffer[i]+=(int32_t(smp[idx])<<8)*vol;
+				vol+=vol_inc;
+				fp_pos+=increment;
+			}
+
+		}
+
+		playback[i].fp_pos=fp_pos;
+		if (!paused && active_voices==1 && (vol_end < vol_begin || done)) {
+			//xfade to something else i gues
+			active_voices=2;
+			playback[1].idx=randomize();
+			playback[1].fp_pos=0;
+			playback[1].scale=Math::random(1,1+pitch_random_scale);
+		}
+
+		if (done) {
+
+			if (i==0 && active_voices==2) {
+				playback[0]=playback[1];
+				i--;
+			}
+			active_voices--;
+
+		}
+	}
+
+	return true;
+}
+
+
+void AudioStreamGibberish::play() {
+	if (active)
+		stop();
+
+
+	if (!phonemes.is_valid())
+		return;
+
+
+	List<StringName> slist;
+	phonemes->get_sample_list(&slist);
+	if (slist.size()==0)
+		return;
+
+	_samples.resize(slist.size());
+	_rand_pool.resize(slist.size());
+
+	int i=0;
+	for(List<StringName>::Element *E=slist.front();E;E=E->next()) {
+
+		_rand_pool[i]=i;
+		_samples[i++]=phonemes->get_sample(E->get());
+	}
+
+	rand_idx=0;
+	active_voices=0;
+	active=true;
+}
+
+void AudioStreamGibberish::stop(){
+
+	active=false;
+
+
+}
+
+bool AudioStreamGibberish::is_playing() const {
+
+	return active;
+}
+
+
+void AudioStreamGibberish::set_paused(bool p_paused){
+
+	paused=p_paused;
+}
+
+bool AudioStreamGibberish::is_paused(bool p_paused) const{
+
+	return paused;
+}
+
+void AudioStreamGibberish::set_loop(bool p_enable){
+
+
+}
+
+bool AudioStreamGibberish::has_loop() const{
+
+	return false;
+}
+
+
+float AudioStreamGibberish::get_length() const{
+
+	return 0;
+}
+
+
+String AudioStreamGibberish::get_stream_name() const{
+
+	return "Gibberish";
+}
+
+
+int AudioStreamGibberish::get_loop_count() const{
+
+	return 0;
+}
+
+
+float AudioStreamGibberish::get_pos() const{
+
+	return 0;
+}
+
+void AudioStreamGibberish::seek_pos(float p_time){
+
+
+}
+
+
+AudioStream::UpdateMode AudioStreamGibberish::get_update_mode() const{
+
+	return AudioStream::UPDATE_NONE;
+}
+
+void AudioStreamGibberish::update(){
+
+
+}
+
+
+void AudioStreamGibberish::set_phonemes(const Ref<SampleLibrary>& p_phonemes) {
+
+	phonemes=p_phonemes;
+
+}
+
+Ref<SampleLibrary> AudioStreamGibberish::get_phonemes() const {
+
+	return phonemes;
+}
+
+void AudioStreamGibberish::set_xfade_time(float p_xfade) {
+
+	xfade_time=p_xfade;
+}
+
+float AudioStreamGibberish::get_xfade_time() const {
+
+	return xfade_time;
+}
+
+void AudioStreamGibberish::set_pitch_scale(float p_scale) {
+
+	pitch_scale=p_scale;
+}
+
+float AudioStreamGibberish::get_pitch_scale() const {
+
+	return pitch_scale;
+}
+
+void AudioStreamGibberish::set_pitch_random_scale(float p_random_scale) {
+
+	pitch_random_scale=p_random_scale;
+}
+
+float AudioStreamGibberish::get_pitch_random_scale() const {
+
+	return pitch_random_scale;
+}
+
+void AudioStreamGibberish::_bind_methods() {
+
+	ObjectTypeDB::bind_method(_MD("set_phonemes","phonemes"),&AudioStreamGibberish::set_phonemes);
+	ObjectTypeDB::bind_method(_MD("get_phonemes"),&AudioStreamGibberish::get_phonemes);
+
+	ObjectTypeDB::bind_method(_MD("set_pitch_scale","pitch_scale"),&AudioStreamGibberish::set_pitch_scale);
+	ObjectTypeDB::bind_method(_MD("get_pitch_scale"),&AudioStreamGibberish::get_pitch_scale);
+
+	ObjectTypeDB::bind_method(_MD("set_pitch_random_scale","pitch_random_scale"),&AudioStreamGibberish::set_pitch_random_scale);
+	ObjectTypeDB::bind_method(_MD("get_pitch_random_scale"),&AudioStreamGibberish::get_pitch_random_scale);
+
+	ObjectTypeDB::bind_method(_MD("set_xfade_time","sec"),&AudioStreamGibberish::set_xfade_time);
+	ObjectTypeDB::bind_method(_MD("get_xfade_time"),&AudioStreamGibberish::get_xfade_time);
+
+	ADD_PROPERTY( PropertyInfo(Variant::OBJECT,"phonemes",PROPERTY_HINT_RESOURCE_TYPE,"SampleLibrary"),_SCS("set_phonemes"),_SCS("get_phonemes"));
+	ADD_PROPERTY( PropertyInfo(Variant::REAL,"pitch_scale",PROPERTY_HINT_RANGE,"0.01,64,0.01"),_SCS("set_pitch_scale"),_SCS("get_pitch_scale"));
+	ADD_PROPERTY( PropertyInfo(Variant::REAL,"pitch_random_scale",PROPERTY_HINT_RANGE,"0,64,0.01"),_SCS("set_pitch_random_scale"),_SCS("get_pitch_random_scale"));
+	ADD_PROPERTY( PropertyInfo(Variant::REAL,"xfade_sec",PROPERTY_HINT_RANGE,"0.001,0.5,0.001"),_SCS("set_xfade_time"),_SCS("get_xfade_time"));
+
+}
+
+AudioStreamGibberish::AudioStreamGibberish() {
+
+	xfade_time=0.1;
+	pitch_scale=1;
+	pitch_random_scale=0;
+	active=false;
+	paused=false;
+	active_voices=0;
+}