AsyncAudioContainerOpus.h

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#ifndef ASYNC_AUDIO_CONTAINER_OPUS_INCLUDED
#define ASYNC_AUDIO_CONTAINER_OPUS_INCLUDED
 
 
/****************************************************************************
 *
 * System Includes
 *
 ****************************************************************************/
 
#include <ogg/ogg.h>
#include <vector>
#include <cstring>
 
 
/****************************************************************************
 *
 * Project Includes
 *
 ****************************************************************************/
 
#include <AsyncAudioContainer.h>
 
 
/****************************************************************************
 *
 * Local Includes
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Forward declarations
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Namespace
 *
 ****************************************************************************/
 
namespace Async
{
 
 
/****************************************************************************
 *
 * Forward declarations of classes inside of the declared namespace
 *
 ****************************************************************************/
 
class AudioEncoder;
 
 
/****************************************************************************
 *
 * Defines & typedefs
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Exported Global Variables
 *
 ****************************************************************************/
 
 
 
/****************************************************************************
 *
 * Class definitions
 *
 ****************************************************************************/
 
class AudioContainerOpus : public AudioContainer
{
  public:
    static constexpr const char *OBJNAME = "opus";
 
    AudioContainerOpus(void);
 
    virtual ~AudioContainerOpus(void);
 
    virtual const char* mediaType(void) const { return "audio/opus"; }
 
    virtual const char* filenameExtension(void) const { return "opus"; }
 
    virtual void endStream(void);
 
    virtual size_t headerSize(void) const { return m_header.size(); }
 
    virtual const char* header(void) { return m_header.data(); }
 
  protected:
 
  private:
    static constexpr const size_t FRAME_SIZE = 20;
 
    Async::AudioEncoder*          m_enc;
    ogg_stream_state              m_ogg_stream;
    ogg_packet                    m_packet{0};
    //int                           m_ogg_serial      = 1;
    int                           m_pending_packets = 0;
    AudioContainer*               m_container       = nullptr;
    std::vector<char>             m_header;
    std::vector<char>             m_block;
 
    AudioContainerOpus(const AudioContainerOpus&);
    AudioContainerOpus& operator=(const AudioContainerOpus&);
    void onWriteBlock(const char *buf, size_t len);
    void onWriteEncodedSamples(const void *data, int len);
    void oggpackWriteString(oggpack_buffer* oggbuf,
                            const char *str, int lenbits=32);
    void oggpackWriteCommentList(oggpack_buffer* oggbuf,
                                 const std::vector<const char*> &comments);
    bool writePage(const ogg_page& page, std::vector<char>& buf);
    bool writeOggOpusHeader(void);
 
};  /* class AudioContainerOpus */
 
 
} /* namespace */
 
#endif /* ASYNC_AUDIO_CONTAINER_OPUS_INCLUDED */
 
/*
 * This file has not been truncated
 */