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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#pragma once
#include "../AddonBase.h"
#ifdef BUILD_KODI_ADDON
#include "../AEChannelData.h"
#else
#include "cores/AudioEngine/Utils/AEChannelData.h"
#endif
#include <stdint.h>
namespace kodi { namespace addon { class CInstanceAudioDecoder; }}
extern "C"
{
typedef struct AddonProps_AudioDecoder
{
int dummy;
} AddonProps_AudioDecoder;
typedef struct AddonToKodiFuncTable_AudioDecoder
{
void* kodiInstance;
} AddonToKodiFuncTable_AudioDecoder;
struct AddonInstance_AudioDecoder;
typedef struct KodiToAddonFuncTable_AudioDecoder
{
kodi::addon::CInstanceAudioDecoder* addonInstance;
bool (__cdecl* init) (const AddonInstance_AudioDecoder* instance,
const char* file, unsigned int filecache,
int* channels, int* samplerate,
int* bitspersample, int64_t* totaltime,
int* bitrate, AEDataFormat* format,
const AEChannel** info);
int (__cdecl* read_pcm) (const AddonInstance_AudioDecoder* instance, uint8_t* buffer, int size, int* actualsize);
int64_t (__cdecl* seek) (const AddonInstance_AudioDecoder* instance, int64_t time);
bool (__cdecl* read_tag) (const AddonInstance_AudioDecoder* instance,
const char* file, char* title,
char* artist, int* length);
int (__cdecl* track_count) (const AddonInstance_AudioDecoder* instance, const char* file);
} KodiToAddonFuncTable_AudioDecoder;
typedef struct AddonInstance_AudioDecoder
{
AddonProps_AudioDecoder props;
AddonToKodiFuncTable_AudioDecoder toKodi;
KodiToAddonFuncTable_AudioDecoder toAddon;
} AddonInstance_AudioDecoder;
} /* extern "C" */
namespace kodi
{
namespace addon
{
class CInstanceAudioDecoder : public IAddonInstance
{
public:
//==========================================================================
/// @brief Class constructor
///
/// @param[in] instance The from Kodi given instance given be
/// add-on CreateInstance call with instance
/// id ADDON_INSTANCE_AUDIODECODER.
explicit CInstanceAudioDecoder(KODI_HANDLE instance)
: IAddonInstance(ADDON_INSTANCE_AUDIODECODER)
{
if (CAddonBase::m_interface->globalSingleInstance != nullptr)
throw std::logic_error("kodi::addon::CInstanceAudioDecoder: Creation of multiple together with single instance way is not allowed!");
SetAddonStruct(instance);
}
//--------------------------------------------------------------------------
//==========================================================================
/// @ingroup cpp_kodi_addon_audiodecoder
/// @brief Initialize a decoder
///
/// @param[in] filename The file to read
/// @param[in] filecache The file cache size
/// @param[out] channels Number of channels in output stream
/// @param[out] samplerate Samplerate of output stream
/// @param[out] bitspersample Bits per sample in output stream
/// @param[out] totaltime Total time for stream
/// @param[out] bitrate Average bitrate of input stream
/// @param[out] format Data format for output stream
/// @param[out] channellist Channel mapping for output stream
/// @return true if successfully done, otherwise
/// false
///
virtual bool Init(const std::string& filename, unsigned int filecache,
int& channels, int& samplerate,
int& bitspersample, int64_t& totaltime,
int& bitrate, AEDataFormat& format,
std::vector<AEChannel>& channellist) = 0;
//--------------------------------------------------------------------------
//==========================================================================
/// @ingroup cpp_kodi_addon_audiodecoder
/// @brief Produce some noise
///
/// @param[in] buffer Output buffer
/// @param[in] size Size of output buffer
/// @param[out] actualsize Actual number of bytes written to output buffer
/// @return Return with following possible values:
/// | Value | Description |
/// |:-----:|:-----------------------------|
/// | 0 | on success
/// | -1 | on end of stream
/// | 1 | on failure
///
virtual int ReadPCM(uint8_t* buffer, int size, int& actualsize) = 0;
//--------------------------------------------------------------------------
//==========================================================================
/// @ingroup cpp_kodi_addon_audiodecoder
/// @brief Seek in output stream
///
/// @param[in] time Time position to seek to in milliseconds
/// @return Time position seek ended up on
///
virtual int64_t Seek(int64_t time) { return time; }
//--------------------------------------------------------------------------
//==========================================================================
/// @ingroup cpp_kodi_addon_audiodecoder
/// @brief Read tag of a file
///
/// @param[in] file File to read tag for
/// @param[out] title Title of file
/// @param[out] artist Artist of file
/// @param[out] length Length of file
/// @return True on success, false on failure
///
virtual bool ReadTag(const std::string& file, std::string& title, std::string& artist, int& length) { return false; }
//--------------------------------------------------------------------------
//==========================================================================
/// @ingroup cpp_kodi_addon_audiodecoder
/// @brief Get number of tracks in a file
///
/// @param[in] file File to read tag for
/// @return Number of tracks in file
///
virtual int TrackCount(const std::string& file) { return 1; }
//--------------------------------------------------------------------------
private:
void SetAddonStruct(KODI_HANDLE instance)
{
if (instance == nullptr)
throw std::logic_error("kodi::addon::CInstanceAudioDecoder: Creation with empty addon structure not allowed, table must be given from Kodi!");
m_instanceData = static_cast<AddonInstance_AudioDecoder*>(instance);
m_instanceData->toAddon.addonInstance = this;
m_instanceData->toAddon.init = ADDON_Init;
m_instanceData->toAddon.read_pcm = ADDON_ReadPCM;
m_instanceData->toAddon.seek = ADDON_Seek;
m_instanceData->toAddon.read_tag = ADDON_ReadTag;
m_instanceData->toAddon.track_count = ADDON_TrackCount;
}
inline static bool ADDON_Init(const AddonInstance_AudioDecoder* instance, const char* file, unsigned int filecache,
int* channels, int* samplerate,
int* bitspersample, int64_t* totaltime,
int* bitrate, AEDataFormat* format,
const AEChannel** info)
{
instance->toAddon.addonInstance->m_channelList.clear();
bool ret = instance->toAddon.addonInstance->Init(file, filecache, *channels,
*samplerate, *bitspersample,
*totaltime, *bitrate, *format,
instance->toAddon.addonInstance->m_channelList);
if (!instance->toAddon.addonInstance->m_channelList.empty())
{
if (instance->toAddon.addonInstance->m_channelList.back() != AE_CH_NULL)
instance->toAddon.addonInstance->m_channelList.push_back(AE_CH_NULL);
*info = instance->toAddon.addonInstance->m_channelList.data();
}
else
*info = nullptr;
return ret;
}
inline static int ADDON_ReadPCM(const AddonInstance_AudioDecoder* instance, uint8_t* buffer, int size, int* actualsize)
{
return instance->toAddon.addonInstance->ReadPCM(buffer, size, *actualsize);
}
inline static int64_t ADDON_Seek(const AddonInstance_AudioDecoder* instance, int64_t time)
{
return instance->toAddon.addonInstance->Seek(time);
}
inline static bool ADDON_ReadTag(const AddonInstance_AudioDecoder* instance, const char* file, char* title, char* artist, int* length)
{
std::string intTitle;
std::string intArtist;
bool ret = instance->toAddon.addonInstance->ReadTag(file, intTitle, intArtist, *length);
if (ret)
{
strncpy(title, intTitle.c_str(), ADDON_STANDARD_STRING_LENGTH_SMALL-1);
strncpy(artist, intArtist.c_str(), ADDON_STANDARD_STRING_LENGTH_SMALL-1);
}
return ret;
}
inline static int ADDON_TrackCount(const AddonInstance_AudioDecoder* instance, const char* file)
{
return instance->toAddon.addonInstance->TrackCount(file);
}
std::vector<AEChannel> m_channelList;
AddonInstance_AudioDecoder* m_instanceData;
};
} /* namespace addon */
} /* namespace kodi */
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