Aegisub/aegisub/src/audio_provider_ffmpegsource.h

// Copyright (c) 2008-2009, Karl Blomster
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// $Id$

/// @file audio_provider_ffmpegsource.h
/// @see audio_provider_ffmpegsource.cpp
/// @ingroup audio_input ffms
///

///////////
// Headers
#ifdef WITH_FFMPEGSOURCE
#include "include/aegisub/audio_provider.h"
#include "ffmpegsource_common.h"


/// @class FFmpegSourceAudioProvider
/// @brief Implents audio loading with the FFMS library.
class FFmpegSourceAudioProvider : public AudioProvider, FFmpegSourceProvider {
private:
	FFMS_AudioSource *AudioSource;	/// audio source object
	bool COMInited;					/// COM initialization state

	char FFMSErrMsg[1024];			/// FFMS error message
	FFMS_ErrorInfo ErrInfo;			/// FFMS error codes/messages
	wxString ErrorMsg;				/// wx-ified error message

	void Close();
	void LoadAudio(wxString filename);

public:
	FFmpegSourceAudioProvider(wxString filename);
	virtual ~FFmpegSourceAudioProvider();

	/// @brief Checks sample endianness
	/// @return Returns true.
	/// FFMS always delivers native endian samples.
	bool AreSamplesNativeEndian() { return true; }

	virtual void GetAudio(void *buf, int64_t start, int64_t count);
};



/// @class FFmpegSourceAudioProviderFactory
/// @brief Creates a FFmpegSource audio provider.
class FFmpegSourceAudioProviderFactory : public AudioProviderFactory {
public:
	/// @brief Creates a FFmpegSource audio provider.
	/// @param video The audio filename to open.
	/// @return Returns the audio provider.
	AudioProvider *CreateProvider(wxString file) { return new FFmpegSourceAudioProvider(file); }
};

#endif /* WITH_FFMPEGSOURCE */