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AESinkALSA.h
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AESinkALSA.h
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#pragma once
/*
* Copyright (C) 2010-2012 Team XBMC
* http://www.xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "system.h"
#ifdef HAS_ALSA
#include "Interfaces/AESink.h"
#include "Utils/AEDeviceInfo.h"
#include <stdint.h>
#define ALSA_PCM_NEW_HW_PARAMS_API
#include <alsa/asoundlib.h>
#include "threads/CriticalSection.h"
class CAESinkALSA : public IAESink
{
public:
virtual const char *GetName() { return "ALSA"; }
CAESinkALSA();
virtual ~CAESinkALSA();
virtual bool Initialize (AEAudioFormat &format, std::string &device);
virtual void Deinitialize();
virtual bool IsCompatible(const AEAudioFormat format, const std::string device);
virtual void Stop ();
virtual double GetDelay ();
virtual double GetCacheTime ();
virtual double GetCacheTotal ();
virtual unsigned int AddPackets (uint8_t *data, unsigned int frames);
virtual void Drain ();
static void EnumerateDevicesEx(AEDeviceInfoList &list);
private:
CAEChannelInfo GetChannelLayout(AEAudioFormat format);
void GetAESParams(const AEAudioFormat format, std::string& params);
void HandleError(const char* name, int err);
std::string m_initDevice;
AEAudioFormat m_initFormat;
AEAudioFormat m_format;
unsigned int m_bufferSize;
double m_formatSampleRateMul;
bool m_passthrough;
CAEChannelInfo m_channelLayout;
std::string m_device;
snd_pcm_t *m_pcm;
int m_timeout;
static snd_pcm_format_t AEFormatToALSAFormat(const enum AEDataFormat format);
bool InitializeHW(AEAudioFormat &format);
bool InitializeSW(AEAudioFormat &format);
static void AppendParams(std::string &device, const std::string ¶ms);
static bool TryDevice(const std::string &name, snd_pcm_t **pcmp, snd_config_t *lconf);
static bool TryDeviceWithParams(const std::string &name, const std::string ¶ms, snd_pcm_t **pcmp, snd_config_t *lconf);
static bool OpenPCMDevice(const std::string &name, const std::string ¶ms, int channels, snd_pcm_t **pcmp, snd_config_t *lconf, bool preferDmixStereo = false);
static void GetParamFromName(const std::string &name, const std::string ¶m, std::string &value);
static void EnumerateDevice(AEDeviceInfoList &list, const std::string &device, const std::string &description, snd_config_t *config);
static bool SoundDeviceExists(const std::string& device);
static bool GetELD(snd_hctl_t *hctl, int device, CAEDeviceInfo& info, bool& badHDMI);
static void sndLibErrorHandler(const char *file, int line, const char *function, int err, const char *fmt, ...);
};
#endif