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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2023 Laurent Gomila (laurent@sfml-dev.org)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
#ifndef SFML_SOUNDFILEREADERFLAC_HPP
#define SFML_SOUNDFILEREADERFLAC_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Audio/SoundFileReader.hpp>
#include <FLAC/stream_decoder.h>
#include <string>
#include <vector>
namespace sf
{
namespace priv
{
////////////////////////////////////////////////////////////
/// \brief Implementation of sound file reader that handles FLAC files
///
////////////////////////////////////////////////////////////
class SoundFileReaderFlac : public SoundFileReader
{
public:
////////////////////////////////////////////////////////////
/// \brief Check if this reader can handle a file given by an input stream
///
/// \param stream Source stream to check
///
/// \return True if the file is supported by this reader
///
////////////////////////////////////////////////////////////
static bool check(InputStream& stream);
public:
////////////////////////////////////////////////////////////
/// \brief Default constructor
///
////////////////////////////////////////////////////////////
SoundFileReaderFlac();
////////////////////////////////////////////////////////////
/// \brief Default constructor
///
////////////////////////////////////////////////////////////
~SoundFileReaderFlac();
////////////////////////////////////////////////////////////
/// \brief Open a sound file for reading
///
/// \param stream Stream to open
/// \param info Structure to fill with the attributes of the loaded sound
///
////////////////////////////////////////////////////////////
virtual bool open(sf::InputStream& stream, Info& info);
////////////////////////////////////////////////////////////
/// \brief Change the current read position to the given sample offset
///
/// The sample offset takes the channels into account.
/// If you have a time offset instead, you can easily find
/// the corresponding sample offset with the following formula:
/// `timeInSeconds * sampleRate * channelCount`
/// If the given offset exceeds to total number of samples,
/// this function must jump to the end of the file.
///
/// \param sampleOffset Index of the sample to jump to, relative to the beginning
///
////////////////////////////////////////////////////////////
virtual void seek(Uint64 sampleOffset);
////////////////////////////////////////////////////////////
/// \brief Read audio samples from the open file
///
/// \param samples Pointer to the sample array to fill
/// \param maxCount Maximum number of samples to read
///
/// \return Number of samples actually read (may be less than \a maxCount)
///
////////////////////////////////////////////////////////////
virtual Uint64 read(Int16* samples, Uint64 maxCount);
public:
////////////////////////////////////////////////////////////
/// \brief Hold the state that is passed to the decoder callbacks
///
////////////////////////////////////////////////////////////
struct ClientData
{
InputStream* stream;
SoundFileReader::Info info;
Int16* buffer;
Uint64 remaining;
std::vector<Int16> leftovers;
bool error;
};
private:
////////////////////////////////////////////////////////////
/// \brief Close the open FLAC file
///
////////////////////////////////////////////////////////////
void close();
////////////////////////////////////////////////////////////
// Member data
////////////////////////////////////////////////////////////
FLAC__StreamDecoder* m_decoder; //!< FLAC decoder
ClientData m_clientData; //!< Structure passed to the decoder callbacks
};
} // namespace priv
} // namespace sf
#endif // SFML_SOUNDFILEREADERFLAC_HPP
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