opus/vorbis: Remove dead code not used since 3.0

Since the new audio system in 3.0 we switched the OGG support to
stb_vorbis, and the Opus stream support was disabled as incompatible
(see #7496).

We still build the libraries as they are needed by the theora and webm
modules, but we don't need any Godot code apart from `register_types`.

Fixes #7496.

6 files changed, 8 insertions, 632 deletions

diff --git a/modules/vorbis/SCsub b/modules/vorbis/SCsub
index 3824fdd789..bde4359595 100644
--- a/modules/vorbis/SCsub
+++ b/modules/vorbis/SCsub
@@ -3,6 +3,9 @@
 Import('env')
 Import('env_modules')
 
+# Only kept to build the thirdparty library used by the theora and webm
+# modules. We now use stb_vorbis for AudioStreamOGGVorbis.
+
 env_vorbis = env_modules.Clone()
 
 stub = True
@@ -50,9 +53,5 @@ if env['builtin_libvorbis']:
     env_thirdparty.disable_warnings()
     env_thirdparty.add_source_files(env.modules_sources, thirdparty_sources)
 
-if not stub:
-    # Module files
-    env_vorbis.add_source_files(env.modules_sources, "*.cpp")
-else:
-    # Module files
-    env_vorbis.add_source_files(env.modules_sources, "stub/register_types.cpp")
+# Module files
+env_vorbis.add_source_files(env.modules_sources, "register_types.cpp")
diff --git a/modules/vorbis/audio_stream_ogg_vorbis.cpp b/modules/vorbis/audio_stream_ogg_vorbis.cpp
deleted file mode 100644
index 1e8ee9b17e..0000000000
--- a/modules/vorbis/audio_stream_ogg_vorbis.cpp
+++ /dev/null
@@ -1,406 +0,0 @@
-/*************************************************************************/
-/*  audio_stream_ogg_vorbis.cpp                                          */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 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_stream_ogg_vorbis.h"
-
-size_t AudioStreamPlaybackOGGVorbis::_ov_read_func(void *p_dst, size_t p_data, size_t p_count, void *_f) {
-
-	//printf("read to %p, %i bytes, %i nmemb, %p\n",p_dst,p_data,p_count,_f);
-	FileAccess *fa = (FileAccess *)_f;
-	size_t read_total = p_data * p_count;
-
-	if (fa->eof_reached())
-		return 0;
-
-	uint8_t *dst = (uint8_t *)p_dst;
-
-	int read = fa->get_buffer(dst, read_total);
-
-	return read;
-}
-
-int AudioStreamPlaybackOGGVorbis::_ov_seek_func(void *_f, ogg_int64_t offs, int whence) {
-
-	//printf("seek to %p, offs %i, whence %i\n",_f,(int)offs,whence);
-
-#ifdef SEEK_SET
-	//printf("seek set defined\n");
-	FileAccess *fa = (FileAccess *)_f;
-
-	if (whence == SEEK_SET) {
-
-		fa->seek(offs);
-	} else if (whence == SEEK_CUR) {
-
-		fa->seek(fa->get_position() + offs);
-	} else if (whence == SEEK_END) {
-
-		fa->seek_end(offs);
-	} else {
-
-		ERR_PRINT("Vorbis seek function failure: Unexpected value in _whence\n");
-	}
-	int ret = fa->eof_reached() ? -1 : 0;
-	//printf("returning %i\n",ret);
-	return ret;
-
-#else
-	return -1; // no seeking
-#endif
-}
-int AudioStreamPlaybackOGGVorbis::_ov_close_func(void *_f) {
-
-	//printf("close %p\n",_f);
-	if (!_f)
-		return 0;
-	FileAccess *fa = (FileAccess *)_f;
-	if (fa->is_open())
-		fa->close();
-	return 0;
-}
-long AudioStreamPlaybackOGGVorbis::_ov_tell_func(void *_f) {
-
-	//printf("close %p\n",_f);
-
-	FileAccess *fa = (FileAccess *)_f;
-	return fa->get_position();
-}
-
-int AudioStreamPlaybackOGGVorbis::mix(int16_t *p_buffer, int p_frames) {
-
-	if (!playing)
-		return 0;
-
-	int total = p_frames;
-	while (true) {
-
-		int todo = p_frames;
-
-		if (todo < MIN_MIX) {
-			break;
-		}
-
-#ifdef BIG_ENDIAN_ENABLED
-		long ret = ov_read(&vf, (char *)p_buffer, todo * stream_channels * sizeof(int16_t), 1, 2, 1, &current_section);
-#else
-		long ret = ov_read(&vf, (char *)p_buffer, todo * stream_channels * sizeof(int16_t), 0, 2, 1, &current_section);
-#endif
-
-		if (ret < 0) {
-
-			playing = false;
-			ERR_BREAK_MSG(ret < 0, "Error reading OGG Vorbis file: " + file + ".");
-		} else if (ret == 0) { // end of song, reload?
-
-			ov_clear(&vf);
-
-			_close_file();
-
-			if (!has_loop()) {
-
-				playing = false;
-				repeats = 1;
-				break;
-			}
-
-			f = FileAccess::open(file, FileAccess::READ);
-
-			int errv = ov_open_callbacks(f, &vf, NULL, 0, _ov_callbacks);
-			if (errv != 0) {
-				playing = false;
-				break; // :(
-			}
-
-			if (loop_restart_time) {
-				bool ok = ov_time_seek(&vf, loop_restart_time) == 0;
-				if (!ok) {
-					playing = false;
-					ERR_PRINT("Loop restart time rejected");
-				}
-
-				frames_mixed = stream_srate * loop_restart_time;
-			} else {
-
-				frames_mixed = 0;
-			}
-			repeats++;
-			continue;
-		}
-
-		ret /= stream_channels;
-		ret /= sizeof(int16_t);
-
-		frames_mixed += ret;
-
-		p_buffer += ret * stream_channels;
-		p_frames -= ret;
-	}
-
-	return total - p_frames;
-}
-
-void AudioStreamPlaybackOGGVorbis::play(float p_from) {
-
-	if (playing)
-		stop();
-
-	if (_load_stream() != OK)
-		return;
-
-	frames_mixed = 0;
-	playing = true;
-	if (p_from > 0) {
-		seek(p_from);
-	}
-}
-
-void AudioStreamPlaybackOGGVorbis::_close_file() {
-
-	if (f) {
-
-		memdelete(f);
-		f = NULL;
-	}
-}
-
-bool AudioStreamPlaybackOGGVorbis::is_playing() const {
-	return playing;
-}
-void AudioStreamPlaybackOGGVorbis::stop() {
-
-	_clear_stream();
-	playing = false;
-	//_clear();
-}
-
-float AudioStreamPlaybackOGGVorbis::get_playback_position() const {
-
-	int32_t frames = int32_t(frames_mixed);
-	if (frames < 0)
-		frames = 0;
-	return double(frames) / stream_srate;
-}
-
-void AudioStreamPlaybackOGGVorbis::seek(float p_time) {
-
-	if (!playing)
-		return;
-	bool ok = ov_time_seek(&vf, p_time) == 0;
-	ERR_FAIL_COND(!ok);
-	frames_mixed = stream_srate * p_time;
-}
-
-String AudioStreamPlaybackOGGVorbis::get_stream_name() const {
-
-	return "";
-}
-
-void AudioStreamPlaybackOGGVorbis::set_loop(bool p_enable) {
-
-	loops = p_enable;
-}
-
-bool AudioStreamPlaybackOGGVorbis::has_loop() const {
-
-	return loops;
-}
-
-int AudioStreamPlaybackOGGVorbis::get_loop_count() const {
-	return repeats;
-}
-
-Error AudioStreamPlaybackOGGVorbis::set_file(const String &p_file) {
-
-	file = p_file;
-	stream_valid = false;
-	Error err;
-	f = FileAccess::open(file, FileAccess::READ, &err);
-	ERR_FAIL_COND_V_MSG(err, err, "Cannot open file '" + p_file + "'.");
-
-	int errv = ov_open_callbacks(f, &vf, NULL, 0, _ov_callbacks);
-	switch (errv) {
-
-		case OV_EREAD: { // - A read from media returned an error.
-			memdelete(f);
-			f = NULL;
-			ERR_FAIL_V(ERR_FILE_CANT_READ);
-		} break;
-		case OV_EVERSION: // - Vorbis version mismatch.
-		case OV_ENOTVORBIS: { // - Bitstream is not Vorbis data.
-			memdelete(f);
-			f = NULL;
-			ERR_FAIL_V(ERR_FILE_UNRECOGNIZED);
-		} break;
-		case OV_EBADHEADER: { // - Invalid Vorbis bitstream header.
-			memdelete(f);
-			f = NULL;
-			ERR_FAIL_V(ERR_FILE_CORRUPT);
-		} break;
-		case OV_EFAULT: { // - Internal logic fault; indicates a bug or heap/stack corruption.
-			memdelete(f);
-			f = NULL;
-			ERR_FAIL_V(ERR_BUG);
-		} break;
-	}
-	const vorbis_info *vinfo = ov_info(&vf, -1);
-	stream_channels = vinfo->channels;
-	stream_srate = vinfo->rate;
-	length = ov_time_total(&vf, -1);
-	ov_clear(&vf);
-	memdelete(f);
-	f = NULL;
-	stream_valid = true;
-
-	return OK;
-}
-
-Error AudioStreamPlaybackOGGVorbis::_load_stream() {
-
-	ERR_FAIL_COND_V(!stream_valid, ERR_UNCONFIGURED);
-
-	_clear_stream();
-	if (file == "")
-		return ERR_INVALID_DATA;
-
-	Error err;
-	f = FileAccess::open(file, FileAccess::READ, &err);
-	ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot open file '" + file + "'.");
-
-	int errv = ov_open_callbacks(f, &vf, NULL, 0, _ov_callbacks);
-	switch (errv) {
-
-		case OV_EREAD: { // - A read from media returned an error.
-			memdelete(f);
-			f = NULL;
-			ERR_FAIL_V(ERR_FILE_CANT_READ);
-		} break;
-		case OV_EVERSION: // - Vorbis version mismatch.
-		case OV_ENOTVORBIS: { // - Bitstream is not Vorbis data.
-			memdelete(f);
-			f = NULL;
-			ERR_FAIL_V(ERR_FILE_UNRECOGNIZED);
-		} break;
-		case OV_EBADHEADER: { // - Invalid Vorbis bitstream header.
-			memdelete(f);
-			f = NULL;
-			ERR_FAIL_V(ERR_FILE_CORRUPT);
-		} break;
-		case OV_EFAULT: { // - Internal logic fault; indicates a bug or heap/stack corruption.
-			memdelete(f);
-			f = NULL;
-			ERR_FAIL_V(ERR_BUG);
-		} break;
-	}
-	repeats = 0;
-	stream_loaded = true;
-
-	return OK;
-}
-
-float AudioStreamPlaybackOGGVorbis::get_length() const {
-
-	if (!stream_loaded) {
-		if (const_cast<AudioStreamPlaybackOGGVorbis *>(this)->_load_stream() != OK)
-			return 0;
-	}
-	return length;
-}
-
-void AudioStreamPlaybackOGGVorbis::_clear_stream() {
-
-	if (!stream_loaded)
-		return;
-
-	ov_clear(&vf);
-	_close_file();
-
-	stream_loaded = false;
-	//stream_channels=1;
-	playing = false;
-}
-
-void AudioStreamPlaybackOGGVorbis::set_paused(bool p_paused) {
-
-	paused = p_paused;
-}
-
-bool AudioStreamPlaybackOGGVorbis::is_paused() const {
-
-	return paused;
-}
-
-AudioStreamPlaybackOGGVorbis::AudioStreamPlaybackOGGVorbis() {
-
-	loops = false;
-	playing = false;
-	_ov_callbacks.read_func = _ov_read_func;
-	_ov_callbacks.seek_func = _ov_seek_func;
-	_ov_callbacks.close_func = _ov_close_func;
-	_ov_callbacks.tell_func = _ov_tell_func;
-	f = NULL;
-	stream_loaded = false;
-	stream_valid = false;
-	repeats = 0;
-	paused = true;
-	stream_channels = 0;
-	stream_srate = 0;
-	current_section = 0;
-	length = 0;
-	loop_restart_time = 0;
-}
-
-AudioStreamPlaybackOGGVorbis::~AudioStreamPlaybackOGGVorbis() {
-
-	_clear_stream();
-}
-
-RES ResourceFormatLoaderAudioStreamOGGVorbis::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress) {
-	if (r_error)
-		*r_error = OK;
-
-	AudioStreamOGGVorbis *ogg_stream = memnew(AudioStreamOGGVorbis);
-	ogg_stream->set_file(p_path);
-	return Ref<AudioStreamOGGVorbis>(ogg_stream);
-}
-
-void ResourceFormatLoaderAudioStreamOGGVorbis::get_recognized_extensions(List<String> *p_extensions) const {
-
-	p_extensions->push_back("ogg");
-}
-String ResourceFormatLoaderAudioStreamOGGVorbis::get_resource_type(const String &p_path) const {
-
-	if (p_path.get_extension().to_lower() == "ogg")
-		return "AudioStreamOGGVorbis";
-	return "";
-}
-
-bool ResourceFormatLoaderAudioStreamOGGVorbis::handles_type(const String &p_type) const {
-	return (p_type == "AudioStream" || p_type == "AudioStreamOGG" || p_type == "AudioStreamOGGVorbis");
-}
diff --git a/modules/vorbis/audio_stream_ogg_vorbis.h b/modules/vorbis/audio_stream_ogg_vorbis.h
deleted file mode 100644
index db621f88d2..0000000000
--- a/modules/vorbis/audio_stream_ogg_vorbis.h
+++ /dev/null
@@ -1,137 +0,0 @@
-/*************************************************************************/
-/*  audio_stream_ogg_vorbis.h                                            */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 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_OGG_VORBIS_H
-#define AUDIO_STREAM_OGG_VORBIS_H
-
-#include "core/io/resource_loader.h"
-#include "core/os/file_access.h"
-#include "core/os/thread_safe.h"
-#include "scene/resources/audio_stream.h"
-
-#include <vorbis/vorbisfile.h>
-
-class AudioStreamPlaybackOGGVorbis : public AudioStreamPlayback {
-
-	GDCLASS(AudioStreamPlaybackOGGVorbis, AudioStreamPlayback);
-
-	enum {
-		MIN_MIX = 1024
-	};
-
-	FileAccess *f;
-
-	ov_callbacks _ov_callbacks;
-	float length;
-	static size_t _ov_read_func(void *p_dst, size_t p_data, size_t p_count, void *_f);
-	static int _ov_seek_func(void *_f, ogg_int64_t offs, int whence);
-	static int _ov_close_func(void *_f);
-	static long _ov_tell_func(void *_f);
-
-	String file;
-	int64_t frames_mixed;
-
-	bool stream_loaded;
-	volatile bool playing;
-	OggVorbis_File vf;
-	int stream_channels;
-	int stream_srate;
-	int current_section;
-
-	bool paused;
-	bool loops;
-	int repeats;
-
-	Error _load_stream();
-	void _clear_stream();
-	void _close_file();
-
-	bool stream_valid;
-	float loop_restart_time;
-
-public:
-	Error set_file(const String &p_file);
-
-	virtual void play(float p_from = 0);
-	virtual void stop();
-	virtual bool is_playing() const;
-
-	virtual void set_loop_restart_time(float p_time) { loop_restart_time = p_time; }
-
-	virtual void set_paused(bool p_paused);
-	virtual bool is_paused() const;
-
-	virtual void set_loop(bool p_enable);
-	virtual bool has_loop() const;
-
-	virtual float get_length() const;
-
-	virtual String get_stream_name() const;
-
-	virtual int get_loop_count() const;
-
-	virtual float get_playback_position() const;
-	virtual void seek(float p_time);
-
-	virtual int get_channels() const { return stream_channels; }
-	virtual int get_mix_rate() const { return stream_srate; }
-
-	virtual int get_minimum_buffer_size() const { return 0; }
-	virtual int mix(int16_t *p_buffer, int p_frames);
-
-	AudioStreamPlaybackOGGVorbis();
-	~AudioStreamPlaybackOGGVorbis();
-};
-
-class AudioStreamOGGVorbis : public AudioStream {
-
-	GDCLASS(AudioStreamOGGVorbis, AudioStream);
-
-	String file;
-
-public:
-	Ref<AudioStreamPlayback> instance_playback() {
-		Ref<AudioStreamPlaybackOGGVorbis> pb = memnew(AudioStreamPlaybackOGGVorbis);
-		pb->set_file(file);
-		return pb;
-	}
-
-	void set_file(const String &p_file) { file = p_file; }
-};
-
-class ResourceFormatLoaderAudioStreamOGGVorbis : public ResourceFormatLoader {
-public:
-	virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = NULL, bool p_use_sub_threads = false, float *r_progress = nullptr);
-	virtual void get_recognized_extensions(List<String> *p_extensions) const;
-	virtual bool handles_type(const String &p_type) const;
-	virtual String get_resource_type(const String &p_path) const;
-};
-
-#endif // AUDIO_STREAM_OGG_H
diff --git a/modules/vorbis/register_types.cpp b/modules/vorbis/register_types.cpp
index de055551ad..8874b3887b 100644
--- a/modules/vorbis/register_types.cpp
+++ b/modules/vorbis/register_types.cpp
@@ -30,19 +30,8 @@
 
 #include "register_types.h"
 
-#include "audio_stream_ogg_vorbis.h"
+// Dummy module as libvorbis is needed by other modules (theora ...)
 
-static Ref<ResourceFormatLoaderAudioStreamOGGVorbis> vorbis_stream_loader;
+void register_vorbis_types() {}
 
-void register_vorbis_types() {
-
-	vorbis_stream_loader.instance();
-	ResourceLoader::add_resource_format_loader(vorbis_stream_loader);
-	ClassDB::register_class<AudioStreamOGGVorbis>();
-}
-
-void unregister_vorbis_types() {
-
-	ResourceLoader::remove_resource_format_loader(vorbis_stream_loader);
-	vorbis_stream_loader.unref();
-}
+void unregister_vorbis_types() {}
diff --git a/modules/vorbis/stub/register_types.cpp b/modules/vorbis/stub/register_types.cpp
deleted file mode 100644
index 8874b3887b..0000000000
--- a/modules/vorbis/stub/register_types.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-/*************************************************************************/
-/*  register_types.cpp                                                   */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 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 "register_types.h"
-
-// Dummy module as libvorbis is needed by other modules (theora ...)
-
-void register_vorbis_types() {}
-
-void unregister_vorbis_types() {}
diff --git a/modules/vorbis/stub/register_types.h b/modules/vorbis/stub/register_types.h
deleted file mode 100644
index 83d4904a87..0000000000
--- a/modules/vorbis/stub/register_types.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*************************************************************************/
-/*  register_types.h                                                     */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2020 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.                */
-/*************************************************************************/
-
-void register_vorbis_types();
-void unregister_vorbis_types();