Decoder related CTLs

Macros
#define	OPUS_SET_GAIN(x)
	Configures decoder gain adjustment.
#define	OPUS_GET_GAIN(x)
	Gets the decoder's configured gain adjustment.
#define	OPUS_GET_LAST_PACKET_DURATION(x)
	Gets the duration (in samples) of the last packet successfully decoded or concealed.
#define	OPUS_GET_PITCH(x)
	Gets the pitch of the last decoded frame, if available.

Detailed Description

See also

Generic CTLs, Encoder related CTLs, Opus Decoder

Macro Definition Documentation

OPUS_GET_GAIN

#define OPUS_GET_GAIN

(

x

)

Gets the decoder's configured gain adjustment.

See also

OPUS_SET_GAIN

Parameters

[out]

x

opus_int32 *: Amount to scale PCM signal by in Q8 dB units.

OPUS_GET_LAST_PACKET_DURATION

#define OPUS_GET_LAST_PACKET_DURATION

(

x

)

Gets the duration (in samples) of the last packet successfully decoded or concealed.

Parameters

[out]

x

opus_int32 *: Number of samples (at current sampling rate).

OPUS_GET_PITCH

#define OPUS_GET_PITCH

(

x

)

Gets the pitch of the last decoded frame, if available.

This can be used for any post-processing algorithm requiring the use of pitch, e.g. time stretching/shortening. If the last frame was not voiced, or if the pitch was not coded in the frame, then zero is returned.

This CTL is only implemented for decoder instances.

Parameters

[out]

x

opus_int32 *: pitch period at 48 kHz (or 0 if not available)

OPUS_SET_GAIN

#define OPUS_SET_GAIN

(

x

)

Configures decoder gain adjustment.

Scales the decoded output by a factor specified in Q8 dB units. This has a maximum range of -32768 to 32767 inclusive, and returns OPUS_BAD_ARG otherwise. The default is zero indicating no adjustment. This setting survives decoder reset.

gain = pow(10, x/(20.0*256))

Parameters

[in]

x

opus_int32: Amount to scale PCM signal by in Q8 dB units.