mpd/test/test_vorbis_encoder.cxx

// SPDX-License-Identifier: GPL-2.0-or-later
// Copyright The Music Player Daemon Project

#include "encoder/EncoderList.hxx"
#include "encoder/EncoderPlugin.hxx"
#include "encoder/EncoderInterface.hxx"
#include "encoder/ToOutputStream.hxx"
#include "pcm/AudioFormat.hxx"
#include "config/Block.hxx"
#include "io/StdioOutputStream.hxx"
#include "tag/Tag.hxx"
#include "tag/Builder.hxx"
#include "util/PrintException.hxx"

#include <cassert>
#include <memory>

#include <stddef.h>

int
main([[maybe_unused]] int argc, [[maybe_unused]] char **argv)
try {
	/* create the encoder */

	const auto plugin = encoder_plugin_get("vorbis");
	assert(plugin != nullptr);

	ConfigBlock block;
	block.AddBlockParam("quality", "5.0", -1);

	std::unique_ptr<PreparedEncoder> p_encoder(encoder_init(*plugin, block));
	assert(p_encoder != nullptr);

	/* open the encoder */

	AudioFormat audio_format(44100, SampleFormat::S16, 2);
	std::unique_ptr<Encoder> encoder(p_encoder->Open(audio_format));
	assert(encoder != nullptr);

	StdioOutputStream os(stdout);

	EncoderToOutputStream(os, *encoder);

	/* write a block of data */

	static constexpr std::byte zero[256]{};
	encoder->Write(std::span{zero});

	EncoderToOutputStream(os, *encoder);

	/* write a tag */

	encoder->PreTag();

	EncoderToOutputStream(os, *encoder);

	Tag tag;

	{
		TagBuilder tag_builder;
		tag_builder.AddItem(TAG_ARTIST, "Foo");
		tag_builder.AddItem(TAG_TITLE, "Bar");
		tag_builder.Commit(tag);
	}

	encoder->SendTag(tag);

	EncoderToOutputStream(os, *encoder);

	/* write another block of data */

	encoder->Write(std::span{zero});

	/* finish */

	encoder->End();
	EncoderToOutputStream(os, *encoder);

	return EXIT_SUCCESS;
} catch (...) {
	PrintException(std::current_exception());
	return EXIT_FAILURE;
}