Drop RtAudio driver on Windows

We've been defaulting to WASAPI since 3.0 and it's superior to RtAudio
in all aspects.

Obsoletes and closes #25503.

Also enable WINMIDI on MinGW, this had been missed initially.

Fix os_windows.cpp and crash_handler_windows.cpp which had weird
dependencies on RtAudio.h's includes (ugh).

4 files changed, 0 insertions, 294 deletions

diff --git a/drivers/SCsub b/drivers/SCsub
index 320d4dc4bb..583973c025 100644
--- a/drivers/SCsub
+++ b/drivers/SCsub
@@ -13,7 +13,6 @@ SConscript('alsa/SCsub')
 SConscript('coreaudio/SCsub')
 SConscript('pulseaudio/SCsub')
 if (env["platform"] == "windows"):
-    SConscript("rtaudio/SCsub")
     SConscript("wasapi/SCsub")
 if env['xaudio2']:
     SConscript("xaudio2/SCsub")
diff --git a/drivers/rtaudio/SCsub b/drivers/rtaudio/SCsub
deleted file mode 100644
index 285658073c..0000000000
--- a/drivers/rtaudio/SCsub
+++ /dev/null
@@ -1,23 +0,0 @@
-#!/usr/bin/env python
-
-Import('env')
-
-# Not cloning the env, the includes need to be accessible for platform/
-
-# Thirdparty source files
-thirdparty_dir = "#thirdparty/rtaudio/"
-thirdparty_sources = [
-    "RtAudio.cpp",
-]
-thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
-
-env.Append(CPPPATH=[thirdparty_dir])
-
-env_thirdparty = env.Clone()
-env_thirdparty.disable_warnings()
-env_thirdparty.add_source_files(env.drivers_sources, thirdparty_sources)
-
-# Driver source files
-env.add_source_files(env.drivers_sources, "*.cpp")
-
-Export('env')
diff --git a/drivers/rtaudio/audio_driver_rtaudio.cpp b/drivers/rtaudio/audio_driver_rtaudio.cpp
deleted file mode 100644
index e45621d70f..0000000000
--- a/drivers/rtaudio/audio_driver_rtaudio.cpp
+++ /dev/null
@@ -1,205 +0,0 @@
-/*************************************************************************/
-/*  audio_driver_rtaudio.cpp                                             */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2019 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.                */
-/*************************************************************************/
-
-#include "audio_driver_rtaudio.h"
-
-#include "core/os/os.h"
-#include "core/project_settings.h"
-
-#ifdef RTAUDIO_ENABLED
-
-const char *AudioDriverRtAudio::get_name() const {
-
-#ifdef OSX_ENABLED
-	return "RtAudio-OSX";
-#elif defined(UNIX_ENABLED)
-	return "RtAudio-ALSA";
-#elif defined(WINDOWS_ENABLED)
-	return "RtAudio-DirectSound";
-#else
-	return "RtAudio-None";
-#endif
-}
-
-int AudioDriverRtAudio::callback(void *outputBuffer, void *inputBuffer, unsigned int nBufferFrames, double streamTime, RtAudioStreamStatus status, void *userData) {
-
-	if (status) {
-		if (status & RTAUDIO_INPUT_OVERFLOW) {
-			WARN_PRINT("RtAudio input overflow!");
-		}
-		if (status & RTAUDIO_OUTPUT_UNDERFLOW) {
-			WARN_PRINT("RtAudio output underflow!");
-		}
-	}
-	int32_t *buffer = (int32_t *)outputBuffer;
-
-	AudioDriverRtAudio *self = (AudioDriverRtAudio *)userData;
-
-	if (self->mutex->try_lock() != OK) {
-		// what should i do..
-		for (unsigned int i = 0; i < nBufferFrames; i++)
-			buffer[i] = 0;
-
-		return 0;
-	}
-
-	self->audio_server_process(nBufferFrames, buffer);
-
-	self->mutex->unlock();
-
-	return 0;
-}
-
-Error AudioDriverRtAudio::init() {
-
-	active = false;
-	mutex = Mutex::create(true);
-	dac = memnew(RtAudio);
-
-	ERR_EXPLAIN("Cannot initialize RtAudio audio driver: No devices present.")
-	ERR_FAIL_COND_V(dac->getDeviceCount() < 1, ERR_UNAVAILABLE);
-
-	// FIXME: Adapt to the OutputFormat -> SpeakerMode change
-	/*
-	String channels = GLOBAL_DEF_RST("audio/output","stereo");
-
-	if (channels=="5.1")
-		output_format=OUTPUT_5_1;
-	else if (channels=="quad")
-		output_format=OUTPUT_QUAD;
-	else if (channels=="mono")
-		output_format=OUTPUT_MONO;
-	else
-		output_format=OUTPUT_STEREO;
-	*/
-
-	RtAudio::StreamParameters parameters;
-	parameters.deviceId = dac->getDefaultOutputDevice();
-	RtAudio::StreamOptions options;
-
-	// set the desired numberOfBuffers
-	options.numberOfBuffers = 4;
-
-	parameters.firstChannel = 0;
-	mix_rate = GLOBAL_DEF_RST("audio/mix_rate", DEFAULT_MIX_RATE);
-
-	int latency = GLOBAL_DEF("audio/output_latency", DEFAULT_OUTPUT_LATENCY);
-	unsigned int buffer_frames = closest_power_of_2(latency * mix_rate / 1000);
-	print_verbose("Audio buffer frames: " + itos(buffer_frames) + " calculated latency: " + itos(buffer_frames * 1000 / mix_rate) + "ms");
-
-	short int tries = 4;
-
-	while (tries > 0) {
-		switch (speaker_mode) {
-			case SPEAKER_MODE_STEREO: parameters.nChannels = 2; break;
-			case SPEAKER_SURROUND_31: parameters.nChannels = 4; break;
-			case SPEAKER_SURROUND_51: parameters.nChannels = 6; break;
-			case SPEAKER_SURROUND_71: parameters.nChannels = 8; break;
-		};
-
-		try {
-			dac->openStream(&parameters, NULL, RTAUDIO_SINT32, mix_rate, &buffer_frames, &callback, this, &options);
-			active = true;
-
-			break;
-		} catch (RtAudioError) {
-			// try with less channels
-			ERR_PRINT("Unable to open audio, retrying with fewer channels...");
-
-			switch (speaker_mode) {
-				case SPEAKER_MODE_STEREO: break; // Required to silence unhandled enum value warning.
-				case SPEAKER_SURROUND_31: speaker_mode = SPEAKER_MODE_STEREO; break;
-				case SPEAKER_SURROUND_51: speaker_mode = SPEAKER_SURROUND_31; break;
-				case SPEAKER_SURROUND_71: speaker_mode = SPEAKER_SURROUND_51; break;
-			}
-
-			tries--;
-		}
-	}
-
-	return active ? OK : ERR_UNAVAILABLE;
-}
-
-int AudioDriverRtAudio::get_mix_rate() const {
-
-	return mix_rate;
-}
-
-AudioDriver::SpeakerMode AudioDriverRtAudio::get_speaker_mode() const {
-
-	return speaker_mode;
-}
-
-void AudioDriverRtAudio::start() {
-
-	if (active)
-		dac->startStream();
-}
-
-void AudioDriverRtAudio::lock() {
-
-	if (mutex)
-		mutex->lock();
-}
-
-void AudioDriverRtAudio::unlock() {
-
-	if (mutex)
-		mutex->unlock();
-}
-
-void AudioDriverRtAudio::finish() {
-
-	lock();
-	if (active && dac->isStreamOpen()) {
-		dac->closeStream();
-		active = false;
-	}
-	unlock();
-
-	if (mutex) {
-		memdelete(mutex);
-		mutex = NULL;
-	}
-	if (dac) {
-		memdelete(dac);
-		dac = NULL;
-	}
-}
-
-AudioDriverRtAudio::AudioDriverRtAudio() :
-		speaker_mode(SPEAKER_MODE_STEREO),
-		mutex(NULL),
-		dac(NULL),
-		mix_rate(DEFAULT_MIX_RATE),
-		active(false) {
-}
-
-#endif
diff --git a/drivers/rtaudio/audio_driver_rtaudio.h b/drivers/rtaudio/audio_driver_rtaudio.h
deleted file mode 100644
index ac4eee4947..0000000000
--- a/drivers/rtaudio/audio_driver_rtaudio.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*************************************************************************/
-/*  audio_driver_rtaudio.h                                               */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2019 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_DRIVER_RTAUDIO_H
-#define AUDIO_DRIVER_RTAUDIO_H
-
-#ifdef RTAUDIO_ENABLED
-
-#include "servers/audio_server.h"
-
-#include <RtAudio.h>
-
-class AudioDriverRtAudio : public AudioDriver {
-
-	static int callback(void *outputBuffer, void *inputBuffer, unsigned int nBufferFrames,
-			double streamTime, RtAudioStreamStatus status, void *userData);
-	SpeakerMode speaker_mode;
-	Mutex *mutex;
-	RtAudio *dac;
-	int mix_rate;
-	bool active;
-
-public:
-	virtual const char *get_name() const;
-
-	virtual Error init();
-	virtual void start();
-	virtual int get_mix_rate() const;
-	virtual SpeakerMode get_speaker_mode() const;
-	virtual void lock();
-	virtual void unlock();
-	virtual void finish();
-
-	AudioDriverRtAudio();
-};
-
-#endif // AUDIO_DRIVER_RTAUDIO_H
-#endif