Remove NO_THREADS fallback code, Godot 4 requires thread support

This also removes `OS::can_use_threads` from the public API since it's always
true.

3 files changed, 0 insertions, 90 deletions

diff --git a/platform/web/audio_driver_web.cpp b/platform/web/audio_driver_web.cpp
index 0e37afc2cc..c4b27c782d 100644
--- a/platform/web/audio_driver_web.cpp
+++ b/platform/web/audio_driver_web.cpp
@@ -184,51 +184,6 @@ Error AudioDriverWeb::capture_stop() {
 	return OK;
 }
 
-#ifdef NO_THREADS
-/// ScriptProcessorNode implementation
-AudioDriverScriptProcessor *AudioDriverScriptProcessor::singleton = nullptr;
-
-void AudioDriverScriptProcessor::_process_callback() {
-	AudioDriverScriptProcessor::singleton->_audio_driver_capture();
-	AudioDriverScriptProcessor::singleton->_audio_driver_process();
-}
-
-Error AudioDriverScriptProcessor::create(int &p_buffer_samples, int p_channels) {
-	if (!godot_audio_has_script_processor()) {
-		return ERR_UNAVAILABLE;
-	}
-	return (Error)godot_audio_script_create(&p_buffer_samples, p_channels);
-}
-
-void AudioDriverScriptProcessor::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) {
-	godot_audio_script_start(p_in_buf, p_in_buf_size, p_out_buf, p_out_buf_size, &_process_callback);
-}
-
-/// AudioWorkletNode implementation (no threads)
-AudioDriverWorklet *AudioDriverWorklet::singleton = nullptr;
-
-Error AudioDriverWorklet::create(int &p_buffer_size, int p_channels) {
-	if (!godot_audio_has_worklet()) {
-		return ERR_UNAVAILABLE;
-	}
-	return (Error)godot_audio_worklet_create(p_channels);
-}
-
-void AudioDriverWorklet::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) {
-	_audio_driver_process();
-	godot_audio_worklet_start_no_threads(p_out_buf, p_out_buf_size, &_process_callback, p_in_buf, p_in_buf_size, &_capture_callback);
-}
-
-void AudioDriverWorklet::_process_callback(int p_pos, int p_samples) {
-	AudioDriverWorklet *driver = AudioDriverWorklet::singleton;
-	driver->_audio_driver_process(p_pos, p_samples);
-}
-
-void AudioDriverWorklet::_capture_callback(int p_pos, int p_samples) {
-	AudioDriverWorklet *driver = AudioDriverWorklet::singleton;
-	driver->_audio_driver_capture(p_pos, p_samples);
-}
-#else
 /// AudioWorkletNode implementation (threads)
 void AudioDriverWorklet::_audio_thread_func(void *p_data) {
 	AudioDriverWorklet *driver = static_cast<AudioDriverWorklet *>(p_data);
@@ -290,4 +245,3 @@ void AudioDriverWorklet::finish_driver() {
 	quit = true; // Ask thread to quit.
 	thread.wait_to_finish();
 }
-#endif
diff --git a/platform/web/audio_driver_web.h b/platform/web/audio_driver_web.h
index dfce277c0c..0a322d61b4 100644
--- a/platform/web/audio_driver_web.h
+++ b/platform/web/audio_driver_web.h
@@ -89,46 +89,6 @@ public:
 	AudioDriverWeb() {}
 };
 
-#ifdef NO_THREADS
-class AudioDriverScriptProcessor : public AudioDriverWeb {
-private:
-	static void _process_callback();
-
-	static AudioDriverScriptProcessor *singleton;
-
-protected:
-	Error create(int &p_buffer_samples, int p_channels) override;
-	void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override;
-
-public:
-	virtual const char *get_name() const override { return "ScriptProcessor"; }
-
-	virtual void lock() override {}
-	virtual void unlock() override {}
-
-	AudioDriverScriptProcessor() { singleton = this; }
-};
-
-class AudioDriverWorklet : public AudioDriverWeb {
-private:
-	static void _process_callback(int p_pos, int p_samples);
-	static void _capture_callback(int p_pos, int p_samples);
-
-	static AudioDriverWorklet *singleton;
-
-protected:
-	virtual Error create(int &p_buffer_size, int p_output_channels) override;
-	virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override;
-
-public:
-	virtual const char *get_name() const override { return "AudioWorklet"; }
-
-	virtual void lock() override {}
-	virtual void unlock() override {}
-
-	AudioDriverWorklet() { singleton = this; }
-};
-#else
 class AudioDriverWorklet : public AudioDriverWeb {
 private:
 	enum {
@@ -156,6 +116,5 @@ public:
 	void lock() override;
 	void unlock() override;
 };
-#endif
 
 #endif // AUDIO_DRIVER_WEB_H
diff --git a/platform/web/os_web.cpp b/platform/web/os_web.cpp
index ebe56924df..c263ee094b 100644
--- a/platform/web/os_web.cpp
+++ b/platform/web/os_web.cpp
@@ -239,9 +239,6 @@ OS_Web::OS_Web() {
 	godot_js_pwa_cb(&OS_Web::update_pwa_state_callback);
 
 	if (AudioDriverWeb::is_available()) {
-#ifdef NO_THREADS
-		audio_drivers.push_back(memnew(AudioDriverScriptProcessor));
-#endif
 		audio_drivers.push_back(memnew(AudioDriverWorklet));
 	}
 	for (int i = 0; i < audio_drivers.size(); i++) {