Functions

	vp9_get_ac_quant (qindex, delta_q_ac, bit_depth)
	vp9_get_dc_quant (qindex, delta_q_dc, bit_depth)
	vp9_get_qindex (segmentation_params, quantization_params, segment_id)
	vp9_seg_feature_active (params, segment_id, feature)

Details

GstCodecs.vp9_get_ac_quant(qindex, delta_q_ac, bit_depth)

Parameters:

• qindex (int) – the quantizer index

• delta_q_ac (int) – a delta_q_ac value

• bit_depth (int) – coded bit depth

Returns:

the quantizer value for the ac coefficient

Return type:

int

An implementation of “ac_q” function specified in “8.6.1 Dequantization functions”

New in version 1.20.

GstCodecs.vp9_get_dc_quant(qindex, delta_q_dc, bit_depth)

Parameters:

• qindex (int) – the quantizer index

• delta_q_dc (int) – a delta_q_dc value

• bit_depth (int) – coded bit depth

Returns:

the quantizer value for the dc coefficient

Return type:

int

An implementation of “dc_q” function specified in “8.6.1 Dequantization functions”

New in version 1.20.

GstCodecs.vp9_get_qindex(segmentation_params, quantization_params, segment_id)

Parameters:

• segmentation_params (GstCodecs.Vp9SegmentationParams) – a GstCodecs.Vp9SegmentationParams

• quantization_params (GstCodecs.Vp9QuantizationParams) – a GstCodecs.Vp9QuantizationParams

• segment_id (int) – a segment id

Returns:

the quantizer index

Return type:

int

An implementation of “get_qindex” function specfied in “8.6.1 Dequantization functions”

New in version 1.20.

GstCodecs.vp9_seg_feature_active(params, segment_id, feature)

Parameters:

• params (GstCodecs.Vp9SegmentationParams) – a GstCodecs.Vp9SegmentationParams

• segment_id (int) – a segment id

• feature (int) – a segmentation feature

Returns:

True if feature is active

Return type:

bool

An implementation of “seg_feature_active” function specified in “6.4.9 Segmentation feature active syntax”

New in version 1.20.