Package org.xiph.speex
Class NbDecoder
- java.lang.Object
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- org.xiph.speex.NbCodec
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- org.xiph.speex.NbDecoder
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Field Summary
Fields Modifier and Type Field Description private int
count_lost
protected boolean
enhanced
protected Inband
inband
private float[]
innov2
private float
last_ol_gain
Tail of the bufferprivate int
last_pitch
private float
last_pitch_gain
Pitch of last correctly decoded frameprivate float[]
pitch_gain_buf
Pitch gain of last correctly decoded frameprivate int
pitch_gain_buf_idx
Pitch gain of last decoded framesprotected java.util.Random
random
protected Stereo
stereo
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Fields inherited from class org.xiph.speex.NbCodec
awk1, awk2, awk3, bufSize, dtx_enabled, exc_gain_quant_scal1, exc_gain_quant_scal3, excBuf, excIdx, filters, first, frameSize, frmBuf, frmIdx, gamma1, gamma2, innov, interp_qlpc, interp_qlsp, lag_factor, lpc, lpc_floor, lpcSize, m_lsp, max_pitch, mem_sp, min_pitch, NB_FRAME_SIZE, NB_SUBMODE_BITS, NB_SUBMODES, nbSubframes, old_qlsp, pi_gain, pre_mem, preemph, qlsp, subframeSize, submodeID, submodes, VERY_SMALL, voc_m1, voc_m2, voc_mean, voc_offset, windowSize
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Fields inherited from interface org.xiph.speex.Codebook
cdbk_nb, cdbk_nb_high1, cdbk_nb_high2, cdbk_nb_low1, cdbk_nb_low2, exc_10_16_table, exc_10_32_table, exc_20_32_table, exc_5_256_table, exc_5_64_table, exc_8_128_table, gain_cdbk_lbr, gain_cdbk_nb, h0, h1, hexc_10_32_table, hexc_table, high_lsp_cdbk, high_lsp_cdbk2, NB_CDBK_SIZE, NB_CDBK_SIZE_HIGH1, NB_CDBK_SIZE_HIGH2, NB_CDBK_SIZE_LOW1, NB_CDBK_SIZE_LOW2
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Constructor Summary
Constructors Constructor Description NbDecoder()
Constructor
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
decode(Bits bits, float[] out)
Decode the given input bits.int
decodeLost(float[] out)
Decode when packets are lost.void
decodeStereo(float[] data, int frameSize)
Decode the given bits to stereo.boolean
getPerceptualEnhancement()
Returns whether perceptual enhancement is enabled or disabled.void
init(int frameSize, int subframeSize, int lpcSize, int bufSize)
Initialisevoid
setPerceptualEnhancement(boolean enhanced)
Enables or disables perceptual enhancement.-
Methods inherited from class org.xiph.speex.NbCodec
getDtx, getExc, getFrameSize, getInnov, getPiGain, nbinit
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Field Detail
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innov2
private float[] innov2
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count_lost
private int count_lost
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last_pitch
private int last_pitch
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last_pitch_gain
private float last_pitch_gain
Pitch of last correctly decoded frame
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pitch_gain_buf
private float[] pitch_gain_buf
Pitch gain of last correctly decoded frame
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pitch_gain_buf_idx
private int pitch_gain_buf_idx
Pitch gain of last decoded frames
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last_ol_gain
private float last_ol_gain
Tail of the buffer
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random
protected java.util.Random random
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stereo
protected Stereo stereo
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inband
protected Inband inband
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enhanced
protected boolean enhanced
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Method Detail
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init
public void init(int frameSize, int subframeSize, int lpcSize, int bufSize)
Initialise
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decode
public int decode(Bits bits, float[] out) throws java.io.StreamCorruptedException
Decode the given input bits.
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decodeLost
public int decodeLost(float[] out)
Decode when packets are lost.- Parameters:
out
- - the generated mono audio frame.- Returns:
- 0 if successful.
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decodeStereo
public void decodeStereo(float[] data, int frameSize)
Decode the given bits to stereo.- Specified by:
decodeStereo
in interfaceDecoder
- Parameters:
data
- - float array of size 2*frameSize, that contains the mono audio samples in the first half. When the function has completed, the array will contain the interlaced stereo audio samples.frameSize
- - the size of a frame of mono audio samples.
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setPerceptualEnhancement
public void setPerceptualEnhancement(boolean enhanced)
Enables or disables perceptual enhancement.- Specified by:
setPerceptualEnhancement
in interfaceDecoder
- Parameters:
enhanced
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getPerceptualEnhancement
public boolean getPerceptualEnhancement()
Returns whether perceptual enhancement is enabled or disabled.- Specified by:
getPerceptualEnhancement
in interfaceDecoder
- Returns:
- whether perceptual enhancement is enabled or disabled.
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