MythTV: audiooutputdigitalencoder.h Source File

00001 #ifndef AUDIOOUTPUTREENCODER
00002 #define AUDIOOUTPUTREENCODER
00003 
00004 extern "C" {
00005 #include "libavcodec/avcodec.h"
00006 };
00007 
00008 #include "spdifencoder.h"
00009 #include "audiooutputsettings.h"
00010 
00011 #define INBUFSIZE 131072
00012 #define OUTBUFSIZE INBUFSIZE
00013 
00014 class AudioOutputDigitalEncoder
00015 {
00016     typedef int16_t inbuf_t;
00017     typedef int16_t outbuf_t;
00018 
00019   public:
00020     AudioOutputDigitalEncoder(void);
00021     ~AudioOutputDigitalEncoder();
00022 
00023     bool   Init(CodecID codec_id, int bitrate, int samplerate, int channels);
00024     void   Dispose(void);
00025     size_t Encode(void *buf, int len, AudioFormat format);
00026     size_t GetFrames(void *ptr, int maxlen);
00027     int    Buffered(void) const
00028     { return inlen / sizeof(inbuf_t) / av_context->channels; }
00029     void clear();
00030 
00031   private:
00032     void *realloc(void *ptr, size_t old_size, size_t new_size);
00033 
00034     AVCodecContext *av_context;
00035     outbuf_t       *out;
00036     size_t          out_size;
00037     inbuf_t        *in;
00038     size_t          in_size;
00039     int             outlen;
00040     int             inlen;
00041     size_t          samples_per_frame;
00042     int16_t         m_encodebuffer[FF_MIN_BUFFER_SIZE];
00043     SPDIFEncoder   *m_spdifenc;
00044 };
00045 
00046 #endif