80 lines
1.4 KiB
C++
80 lines
1.4 KiB
C++
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#include "VLBDecoder.h"
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VLBDecoder::VLBDecoder()
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{
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decoder = 0;
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}
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VLBDecoder::~VLBDecoder()
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{
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delete decoder;
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}
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int VLBDecoder::Open(DataIOControl *paacInput)
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{
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if (decoder)
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return 1;
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decoder = new CAacDecoderApi(paacInput);
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return 0;
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}
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void VLBDecoder::Close()
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{
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delete decoder;
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decoder=0;
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}
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long VLBDecoder::Synchronize(AACStreamParameters *paacStreamParameters)
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{
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if (decoder)
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{
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long status = decoder->Synchronize(paacStreamParameters);
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if (status == 0)
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{
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info.ucNChannels = (unsigned char) paacStreamParameters->num_channels;
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info.uiSampleRate = paacStreamParameters->sampling_frequency;
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dataout.SetFormatInfo(&info);
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}
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return status;
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}
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else
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return ERR_SYNC_ERROR;
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}
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long VLBDecoder::DecodeFrame(AACStreamParameters *paacStreamParameters)
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{
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if (decoder)
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return decoder->DecodeFrame(&dataout, paacStreamParameters);
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else
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return ERR_INVALID_BITSTREAM;
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}
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void VLBDecoder::Flush()
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{
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dataout.Empty();
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}
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size_t VLBDecoder::Read(void *buffer, size_t bufferlen)
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{
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if (dataout.BytesAvail() > 0)
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{
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size_t l = dataout.BytesAvail();
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if (l > bufferlen)
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l = bufferlen;
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dataout.PullBytes((unsigned char *)buffer, (int)l);
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return l;
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}
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return 0;
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}
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#define CBCLASS VLBDecoder
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START_DISPATCH;
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CB(OBJ_VLBDECODER_OPEN, Open)
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VCB(OBJ_VLBDECODER_CLOSE, Close)
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CB(OBJ_VLBDECODER_SYNCHRONIZE, Synchronize)
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CB(OBJ_VLBDECODER_DECODEFRAME, DecodeFrame)
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VCB(OBJ_VLBDECODER_FLUSH, Flush)
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CB(OBJ_VLBDECODER_READ, Read)
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END_DISPATCH;
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