godot/modules/minimp3/resource_importer_mp3.cpp

/**************************************************************************/
/*  resource_importer_mp3.cpp                                             */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "resource_importer_mp3.h"

#include "core/io/file_access.h"
#include "core/io/resource_saver.h"
#include "scene/resources/texture.h"

#ifdef TOOLS_ENABLED
#include "editor/import/audio_stream_import_settings.h"
#endif

String ResourceImporterMP3::get_importer_name() const {
	return "mp3";
}

String ResourceImporterMP3::get_visible_name() const {
	return "MP3";
}

void ResourceImporterMP3::get_recognized_extensions(List<String> *p_extensions) const {
#ifndef MINIMP3_ONLY_MP3
	p_extensions->push_back("mp1");
	p_extensions->push_back("mp2");
#endif
	p_extensions->push_back("mp3");
}

String ResourceImporterMP3::get_save_extension() const {
	return "mp3str";
}

String ResourceImporterMP3::get_resource_type() const {
	return "AudioStreamMP3";
}

bool ResourceImporterMP3::get_option_visibility(const String &p_path, const String &p_option, const HashMap<StringName, Variant> &p_options) const {
	return true;
}

int ResourceImporterMP3::get_preset_count() const {
	return 0;
}

String ResourceImporterMP3::get_preset_name(int p_idx) const {
	return String();
}

void ResourceImporterMP3::get_import_options(const String &p_path, List<ImportOption> *r_options, int p_preset) const {
	r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "loop"), false));
	r_options->push_back(ImportOption(PropertyInfo(Variant::FLOAT, "loop_offset"), 0));
	r_options->push_back(ImportOption(PropertyInfo(Variant::FLOAT, "bpm", PROPERTY_HINT_RANGE, "0,400,0.01,or_greater"), 0));
	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "beat_count", PROPERTY_HINT_RANGE, "0,512,or_greater"), 0));
	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "bar_beats", PROPERTY_HINT_RANGE, "2,32,or_greater"), 4));
}

#ifdef TOOLS_ENABLED
bool ResourceImporterMP3::has_advanced_options() const {
	return true;
}
void ResourceImporterMP3::show_advanced_options(const String &p_path) {
	Ref<AudioStreamMP3> mp3_stream = import_mp3(p_path);
	if (mp3_stream.is_valid()) {
		AudioStreamImportSettings::get_singleton()->edit(p_path, "mp3", mp3_stream);
	}
}
#endif

Ref<AudioStreamMP3> ResourceImporterMP3::import_mp3(const String &p_path) {
	Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ);
	ERR_FAIL_COND_V(f.is_null(), Ref<AudioStreamMP3>());

	uint64_t len = f->get_length();

	Vector<uint8_t> data;
	data.resize(len);
	uint8_t *w = data.ptrw();

	f->get_buffer(w, len);

	Ref<AudioStreamMP3> mp3_stream;
	mp3_stream.instantiate();

	mp3_stream->set_data(data);
	ERR_FAIL_COND_V(!mp3_stream->get_data().size(), Ref<AudioStreamMP3>());

	return mp3_stream;
}

Error ResourceImporterMP3::import(const String &p_source_file, const String &p_save_path, const HashMap<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata) {
	bool loop = p_options["loop"];
	float loop_offset = p_options["loop_offset"];
	double bpm = p_options["bpm"];
	float beat_count = p_options["beat_count"];
	float bar_beats = p_options["bar_beats"];

	Ref<AudioStreamMP3> mp3_stream = import_mp3(p_source_file);
	if (mp3_stream.is_null()) {
		return ERR_CANT_OPEN;
	}
	mp3_stream->set_loop(loop);
	mp3_stream->set_loop_offset(loop_offset);
	mp3_stream->set_bpm(bpm);
	mp3_stream->set_beat_count(beat_count);
	mp3_stream->set_bar_beats(bar_beats);

	return ResourceSaver::save(mp3_stream, p_save_path + ".mp3str");
}

ResourceImporterMP3::ResourceImporterMP3() {
}