GstVp9StatefulParser

This object is used to parse VP9 bitstream header.

GstVp9DeltaProbabilities

Stores probabilities updates. This is from the spec and can be used as a binary.

Since : 1.20

GstCodecs.Vp9DeltaProbabilities

Stores probabilities updates. This is from the spec and can be used as a binary.

Since : 1.20

GstCodecs.Vp9DeltaProbabilities

Stores probabilities updates. This is from the spec and can be used as a binary.

Since : 1.20

GstVp9FrameHeader

Members

profile (guint8) –

encoded profile

bit_depth (guint8) –

encoded bit depth

subsampling_x (guint8) –

specify the chroma subsampling format for x coordinate

subsampling_y (guint8) –

specify the chroma subsampling format for y coordinate

color_space (guint8) –

specifies the color space of the stream

color_range (guint8) –

specifies the black level and range of the luma and chroma signals

show_existing_frame (guint8) –

equal to 1, indicates the frame indexed by frame_to_show_map_idx is to be displayed

frame_to_show_map_idx (guint8) –

specifies the frame to be displayed. It is only available if show_existing_frame is 1

frame_type (guint8) –

equal to 0 indicates that the current frame is a key frame

show_frame (guint8) –

indicate whether it is a displayable frame or not

error_resilient_mode (guint8) –

equal to 1 indicates that error resilient mode is enabled

width (guint32) –

coded frame width

height (guint32) –

coded frame height

render_and_frame_size_different (guint8) –

equal to 0 means that the render width and height are inferred from the frame width and height

render_width (guint32) –

render width of the frame

render_height (guint32) –

render width of the frame

intra_only (guint8) –

equal to 1 indicates that the frame is an intra-only frame

reset_frame_context (guint8) –

specifies whether the frame context should be reset to default values

refresh_frame_flags (guint8) –

contains a bitmask that specifies which reference frame slots will be updated with the current frame after it is decoded

ref_frame_idx (guint8 *) –

specifies which reference frames are used by inter frames

ref_frame_sign_bias (guint8 *) –

specifies the intended direction of the motion vector in time for each reference frame. A sign bias equal to 0 indicates that the reference frame is a backwards reference

allow_high_precision_mv (guint8) –

equal to 0 specifies that motion vectors are specified to quarter pel precision

interpolation_filter (guint8) –

specifies the filter selection used for performing inter prediction

refresh_frame_context (guint8) –

equal to 1 indicates that the probabilities computed for this frame

frame_parallel_decoding_mode (guint8) –

equal to 1 indicates that parallel decoding mode is enabled

frame_context_idx (guint8) –

indicates the frame context to use

loop_filter_params (GstVp9LoopFilterParams) –

a GstVp9LoopFilterParams

quantization_params (GstVp9QuantizationParams) –

a GstVp9QuantizationParams

segmentation_params (GstVp9SegmentationParams) –

a GstVp9SegmentationParams

tile_cols_log2 (guint8) –

specifies the base 2 logarithm of the width of each tile

tile_rows_log2 (guint8) –

specifies the base 2 logarithm of the height of each tile

header_size_in_bytes (guint16) –
No description available
tx_mode (GstVp9TxMode) –

Specifies how the transform size is determined.

reference_mode (GstVp9ReferenceMode) –

Is a derived syntax element that specifies the type of inter prediction to be used.

delta_probabilities (GstVp9DeltaProbabilities) –

Modification to the probabilities encoded in the bitstream.

lossless_flag (guint8) –

lossless mode decode

frame_header_length_in_bytes (guint32) –

length of uncompressed header

Since : 1.20

GstCodecs.Vp9FrameHeader

Members

profile (Number) –

encoded profile

bit_depth (Number) –

encoded bit depth

subsampling_x (Number) –

specify the chroma subsampling format for x coordinate

subsampling_y (Number) –

specify the chroma subsampling format for y coordinate

color_space (Number) –

specifies the color space of the stream

color_range (Number) –

specifies the black level and range of the luma and chroma signals

show_existing_frame (Number) –

equal to 1, indicates the frame indexed by frame_to_show_map_idx is to be displayed

frame_to_show_map_idx (Number) –

specifies the frame to be displayed. It is only available if show_existing_frame is 1

frame_type (Number) –

equal to 0 indicates that the current frame is a key frame

show_frame (Number) –

indicate whether it is a displayable frame or not

error_resilient_mode (Number) –

equal to 1 indicates that error resilient mode is enabled

width (Number) –

coded frame width

height (Number) –

coded frame height

render_and_frame_size_different (Number) –

equal to 0 means that the render width and height are inferred from the frame width and height

render_width (Number) –

render width of the frame

render_height (Number) –

render width of the frame

intra_only (Number) –

equal to 1 indicates that the frame is an intra-only frame

reset_frame_context (Number) –

specifies whether the frame context should be reset to default values

refresh_frame_flags (Number) –

contains a bitmask that specifies which reference frame slots will be updated with the current frame after it is decoded

ref_frame_idx ([ Number ]) –

specifies which reference frames are used by inter frames

ref_frame_sign_bias ([ Number ]) –

specifies the intended direction of the motion vector in time for each reference frame. A sign bias equal to 0 indicates that the reference frame is a backwards reference

allow_high_precision_mv (Number) –

equal to 0 specifies that motion vectors are specified to quarter pel precision

interpolation_filter (Number) –

specifies the filter selection used for performing inter prediction

refresh_frame_context (Number) –

equal to 1 indicates that the probabilities computed for this frame

frame_parallel_decoding_mode (Number) –

equal to 1 indicates that parallel decoding mode is enabled

frame_context_idx (Number) –

indicates the frame context to use

loop_filter_params (GstCodecs.Vp9LoopFilterParams) –

a GstCodecs.Vp9LoopFilterParams

quantization_params (GstCodecs.Vp9QuantizationParams) –

a GstCodecs.Vp9QuantizationParams

segmentation_params (GstCodecs.Vp9SegmentationParams) –

a GstCodecs.Vp9SegmentationParams

tile_cols_log2 (Number) –

specifies the base 2 logarithm of the width of each tile

tile_rows_log2 (Number) –

specifies the base 2 logarithm of the height of each tile

header_size_in_bytes (Number) –
No description available
tx_mode (GstCodecs.Vp9TxMode) –

Specifies how the transform size is determined.

reference_mode (GstCodecs.Vp9ReferenceMode) –

Is a derived syntax element that specifies the type of inter prediction to be used.

delta_probabilities (GstCodecs.Vp9DeltaProbabilities) –

Modification to the probabilities encoded in the bitstream.

lossless_flag (Number) –

lossless mode decode

frame_header_length_in_bytes (Number) –

length of uncompressed header

Since : 1.20

GstCodecs.Vp9FrameHeader

Members

profile (int) –

encoded profile

bit_depth (int) –

encoded bit depth

subsampling_x (int) –

specify the chroma subsampling format for x coordinate

subsampling_y (int) –

specify the chroma subsampling format for y coordinate

color_space (int) –

specifies the color space of the stream

color_range (int) –

specifies the black level and range of the luma and chroma signals

show_existing_frame (int) –

equal to 1, indicates the frame indexed by frame_to_show_map_idx is to be displayed

frame_to_show_map_idx (int) –

specifies the frame to be displayed. It is only available if show_existing_frame is 1

frame_type (int) –

equal to 0 indicates that the current frame is a key frame

show_frame (int) –

indicate whether it is a displayable frame or not

error_resilient_mode (int) –

equal to 1 indicates that error resilient mode is enabled

width (int) –

coded frame width

height (int) –

coded frame height

render_and_frame_size_different (int) –

equal to 0 means that the render width and height are inferred from the frame width and height

render_width (int) –

render width of the frame

render_height (int) –

render width of the frame

intra_only (int) –

equal to 1 indicates that the frame is an intra-only frame

reset_frame_context (int) –

specifies whether the frame context should be reset to default values

refresh_frame_flags (int) –

contains a bitmask that specifies which reference frame slots will be updated with the current frame after it is decoded

ref_frame_idx ([ int ]) –

specifies which reference frames are used by inter frames

ref_frame_sign_bias ([ int ]) –

specifies the intended direction of the motion vector in time for each reference frame. A sign bias equal to 0 indicates that the reference frame is a backwards reference

allow_high_precision_mv (int) –

equal to 0 specifies that motion vectors are specified to quarter pel precision

interpolation_filter (int) –

specifies the filter selection used for performing inter prediction

refresh_frame_context (int) –

equal to 1 indicates that the probabilities computed for this frame

frame_parallel_decoding_mode (int) –

equal to 1 indicates that parallel decoding mode is enabled

frame_context_idx (int) –

indicates the frame context to use

loop_filter_params (GstCodecs.Vp9LoopFilterParams) –

a GstCodecs.Vp9LoopFilterParams

quantization_params (GstCodecs.Vp9QuantizationParams) –

a GstCodecs.Vp9QuantizationParams

segmentation_params (GstCodecs.Vp9SegmentationParams) –

a GstCodecs.Vp9SegmentationParams

tile_cols_log2 (int) –

specifies the base 2 logarithm of the width of each tile

tile_rows_log2 (int) –

specifies the base 2 logarithm of the height of each tile

header_size_in_bytes (int) –
No description available
tx_mode (GstCodecs.Vp9TxMode) –

Specifies how the transform size is determined.

reference_mode (GstCodecs.Vp9ReferenceMode) –

Is a derived syntax element that specifies the type of inter prediction to be used.

delta_probabilities (GstCodecs.Vp9DeltaProbabilities) –

Modification to the probabilities encoded in the bitstream.

lossless_flag (int) –

lossless mode decode

frame_header_length_in_bytes (int) –

length of uncompressed header

Since : 1.20

GstVp9LoopFilterParams

Loop filter params. See "6.2.8 Loop filter params syntax" and "7.2.8 Loop filter semantics".

If syntax elements for update_ref_delta and/or loop_filter_mode_deltas are not present in bitstream, parser will fill loop_filter_ref_deltas and loop_filter_mode_deltas values by using previously parsed values.

Members

loop_filter_level (guint8) –

indicates the loop filter strength

loop_filter_sharpness (guint8) –

indicates the sharpness level

loop_filter_delta_enabled (guint8) –

equal to 1 means that the filter level depends on the mode and reference frame used to predict a block

loop_filter_delta_update (guint8) –

equal to 1 means that the bitstream contains additional syntax elements that specify which mode and reference frame deltas are to be updated

update_ref_delta (guint8 *) –

equal to 1 means that the bitstream contains the syntax element loop_filter_ref_delta

loop_filter_ref_deltas (gint8 *) –

contains the adjustment needed for the filter level based on the chosen reference frame

update_mode_delta (guint8 *) –

equal to 1 means that the bitstream contains the syntax element loop_filter_mode_deltas

loop_filter_mode_deltas (gint8 *) –

contains the adjustment needed for the filter level based on the chosen mode

Since : 1.20

GstCodecs.Vp9LoopFilterParams

Loop filter params. See "6.2.8 Loop filter params syntax" and "7.2.8 Loop filter semantics".

If syntax elements for update_ref_delta and/or loop_filter_mode_deltas are not present in bitstream, parser will fill loop_filter_ref_deltas and loop_filter_mode_deltas values by using previously parsed values.

Members

loop_filter_level (Number) –

indicates the loop filter strength

loop_filter_sharpness (Number) –

indicates the sharpness level

loop_filter_delta_enabled (Number) –

equal to 1 means that the filter level depends on the mode and reference frame used to predict a block

loop_filter_delta_update (Number) –

equal to 1 means that the bitstream contains additional syntax elements that specify which mode and reference frame deltas are to be updated

update_ref_delta ([ Number ]) –

equal to 1 means that the bitstream contains the syntax element loop_filter_ref_delta

loop_filter_ref_deltas ([ Number ]) –

contains the adjustment needed for the filter level based on the chosen reference frame

update_mode_delta ([ Number ]) –

equal to 1 means that the bitstream contains the syntax element loop_filter_mode_deltas

loop_filter_mode_deltas ([ Number ]) –

contains the adjustment needed for the filter level based on the chosen mode

Since : 1.20

GstCodecs.Vp9LoopFilterParams

Loop filter params. See "6.2.8 Loop filter params syntax" and "7.2.8 Loop filter semantics".

If syntax elements for update_ref_delta and/or loop_filter_mode_deltas are not present in bitstream, parser will fill loop_filter_ref_deltas and loop_filter_mode_deltas values by using previously parsed values.

Members

loop_filter_level (int) –

indicates the loop filter strength

loop_filter_sharpness (int) –

indicates the sharpness level

loop_filter_delta_enabled (int) –

equal to 1 means that the filter level depends on the mode and reference frame used to predict a block

loop_filter_delta_update (int) –

equal to 1 means that the bitstream contains additional syntax elements that specify which mode and reference frame deltas are to be updated

update_ref_delta ([ int ]) –

equal to 1 means that the bitstream contains the syntax element loop_filter_ref_delta

loop_filter_ref_deltas ([ int ]) –

contains the adjustment needed for the filter level based on the chosen reference frame

update_mode_delta ([ int ]) –

equal to 1 means that the bitstream contains the syntax element loop_filter_mode_deltas

loop_filter_mode_deltas ([ int ]) –

contains the adjustment needed for the filter level based on the chosen mode

Since : 1.20

GstVp9MvDeltaProbs

Stores motion vectors probabilities updates. This is from the spec and can be used as a binary.

Since : 1.20

GstCodecs.Vp9MvDeltaProbs

Stores motion vectors probabilities updates. This is from the spec and can be used as a binary.

Since : 1.20

GstCodecs.Vp9MvDeltaProbs

Stores motion vectors probabilities updates. This is from the spec and can be used as a binary.

Since : 1.20

GstVp9QuantizationParams

Members

base_q_idx (guint8) –

indicates the base frame qindex. This is used for Y AC coefficients and as the base value for the other quantizers

delta_q_y_dc (gint8) –

indicates the Y DC quantizer relative to base_q_idx

delta_q_uv_dc (gint8) –

indicates the UV DC quantizer relative to base_q_idx

delta_q_uv_ac (gint8) –

indicates the UV AC quantizer relative to base_q_idx

Since : 1.20

GstCodecs.Vp9QuantizationParams

Members

base_q_idx (Number) –

indicates the base frame qindex. This is used for Y AC coefficients and as the base value for the other quantizers

delta_q_y_dc (Number) –

indicates the Y DC quantizer relative to base_q_idx

delta_q_uv_dc (Number) –

indicates the UV DC quantizer relative to base_q_idx

delta_q_uv_ac (Number) –

indicates the UV AC quantizer relative to base_q_idx

Since : 1.20

GstCodecs.Vp9QuantizationParams

Members

base_q_idx (int) –

indicates the base frame qindex. This is used for Y AC coefficients and as the base value for the other quantizers

delta_q_y_dc (int) –

indicates the Y DC quantizer relative to base_q_idx

delta_q_uv_dc (int) –

indicates the UV DC quantizer relative to base_q_idx

delta_q_uv_ac (int) –

indicates the UV AC quantizer relative to base_q_idx

Since : 1.20

GstVp9SegmentationParams

See "6.2.11 Segmentation params syntax" and "7.2.10 Segmentation params syntax". When segmentation_update_data is equal to zero, parser will fill feature_enabled and by feature_data using previously parsed values.

Members

segmentation_enabled (guint8) –

equal to 1 indicates that this frame makes use of the segmentation tool

segmentation_update_map (guint8) –

equal to 1 indicates that the segmentation map should be updated during the decoding of this frame

segmentation_tree_probs (guint8 *) –

specify the probability values to be used when decoding segment_id

segmentation_pred_prob (guint8 *) –

specify the probability values to be used when decoding seg_id_predicted

segmentation_temporal_update (guint8) –

equal to 1 indicates that the updates to the segmentation map are coded relative to the existing segmentation map

segmentation_update_data (guint8) –

equal to 1 indicates that new parameters are about to be specified for each segment

segmentation_abs_or_delta_update (guint8) –

equal to 0 indicates that the segmentation parameters represent adjustments relative to the standard values. equal to 1 indicates that the segmentation parameters represent the actual values to be used

feature_enabled (guint8 *) –

indicates whether feature is enabled or not

feature_data (gint16 *) –

segmentation feature data

Since : 1.20

GstCodecs.Vp9SegmentationParams

See "6.2.11 Segmentation params syntax" and "7.2.10 Segmentation params syntax". When segmentation_update_data is equal to zero, parser will fill feature_enabled and by feature_data using previously parsed values.

Members

segmentation_enabled (Number) –

equal to 1 indicates that this frame makes use of the segmentation tool

segmentation_update_map (Number) –

equal to 1 indicates that the segmentation map should be updated during the decoding of this frame

segmentation_tree_probs ([ Number ]) –

specify the probability values to be used when decoding segment_id

segmentation_pred_prob ([ Number ]) –

specify the probability values to be used when decoding seg_id_predicted

segmentation_temporal_update (Number) –

equal to 1 indicates that the updates to the segmentation map are coded relative to the existing segmentation map

segmentation_update_data (Number) –

equal to 1 indicates that new parameters are about to be specified for each segment

segmentation_abs_or_delta_update (Number) –

equal to 0 indicates that the segmentation parameters represent adjustments relative to the standard values. equal to 1 indicates that the segmentation parameters represent the actual values to be used

feature_enabled ([ Number ]) –

indicates whether feature is enabled or not

feature_data ([ Number ]) –

segmentation feature data

Since : 1.20

GstCodecs.Vp9SegmentationParams

See "6.2.11 Segmentation params syntax" and "7.2.10 Segmentation params syntax". When segmentation_update_data is equal to zero, parser will fill feature_enabled and by feature_data using previously parsed values.

Members

segmentation_enabled (int) –

equal to 1 indicates that this frame makes use of the segmentation tool

segmentation_update_map (int) –

equal to 1 indicates that the segmentation map should be updated during the decoding of this frame

segmentation_tree_probs ([ int ]) –

specify the probability values to be used when decoding segment_id

segmentation_pred_prob ([ int ]) –

specify the probability values to be used when decoding seg_id_predicted

segmentation_temporal_update (int) –

equal to 1 indicates that the updates to the segmentation map are coded relative to the existing segmentation map

segmentation_update_data (int) –

equal to 1 indicates that new parameters are about to be specified for each segment

segmentation_abs_or_delta_update (int) –

equal to 0 indicates that the segmentation parameters represent adjustments relative to the standard values. equal to 1 indicates that the segmentation parameters represent the actual values to be used

feature_enabled ([ int ]) –

indicates whether feature is enabled or not

feature_data ([ int ]) –

segmentation feature data

Since : 1.20

GstVp9StatefulParser

Opaque VP9 parser struct. The size of this object and member variables are not API

Members

reference (gpointer *) –
No description available

Since : 1.20

GstCodecs.Vp9StatefulParser

Opaque VP9 parser struct. The size of this object and member variables are not API

Members

reference ([ Object ]) –
No description available

Since : 1.20

GstCodecs.Vp9StatefulParser

Opaque VP9 parser struct. The size of this object and member variables are not API

Members

reference ([ object ]) –
No description available

Since : 1.20

Methods

gst_vp9_stateful_parser_free 

gst_vp9_stateful_parser_free (GstVp9StatefulParser * parser)

Frees parser.

Parameters:

parser –

the GstVp9StatefulParser to free

Since : 1.20

GstCodecs.Vp9StatefulParser.prototype.free 

function GstCodecs.Vp9StatefulParser.prototype.free(): {
    // javascript wrapper for 'gst_vp9_stateful_parser_free'
}

Frees parser.

Parameters:

the GstCodecs.Vp9StatefulParser to free

Since : 1.20

GstCodecs.Vp9StatefulParser.free 

def GstCodecs.Vp9StatefulParser.free (self):
    #python wrapper for 'gst_vp9_stateful_parser_free'

Frees parser.

Parameters:

the GstCodecs.Vp9StatefulParser to free

Since : 1.20

gst_vp9_stateful_parser_parse_compressed_frame_header 

GstVp9ParserResult
gst_vp9_stateful_parser_parse_compressed_frame_header (GstVp9StatefulParser * parser,
                                                       GstVp9FrameHeader * header,
                                                       const guint8 * data,
                                                       gsize size)

Parses the compressed information in the VP9 bitstream contained in data, and fills in header with the parsed values. The size argument represent the whole frame size.

Parameters:

parser –

The GstVp9StatefulParser

header –

The GstVp9FrameHeader to fill

data –

The data to parse

size –

The size of the data to parse

Returns –

a GstVp9ParserResult

Since : 1.20

gst_vp9_stateful_parser_parse_uncompressed_frame_header 

GstVp9ParserResult
gst_vp9_stateful_parser_parse_uncompressed_frame_header (GstVp9StatefulParser * parser,
                                                         GstVp9FrameHeader * header,
                                                         const guint8 * data,
                                                         gsize size)

Parses the VP9 bitstream contained in data, and fills in header with the information. The size argument represent the whole frame size.

Parameters:

parser –

The GstVp9StatefulParser

header –

The GstVp9FrameHeader to fill

data –

The data to parse

size –

The size of the data to parse

Returns –

a GstVp9ParserResult

Since : 1.20

Functions

gst_vp9_stateful_parser_new 

GstVp9StatefulParser *
gst_vp9_stateful_parser_new ()

Creates a new GstVp9StatefulParser. It should be freed with gst_vp9_stateful_parser_free after use.

Returns –

a new GstVp9StatefulParser

Since : 1.20

Functions

gst_vp9_get_ac_quant 

gint16
gst_vp9_get_ac_quant (guint8 qindex,
                      gint8 delta_q_ac,
                      guint8 bit_depth)

An implementation of "ac_q" function specified in "8.6.1 Dequantization functions"

Parameters:

qindex –

the quantizer index

delta_q_ac –

a delta_q_ac value

bit_depth –

coded bit depth

Returns –

the quantizer value for the ac coefficient

Since : 1.20

GstCodecs.prototype.vp9_get_ac_quant 

function GstCodecs.prototype.vp9_get_ac_quant(qindex: Number, delta_q_ac: Number, bit_depth: Number): {
    // javascript wrapper for 'gst_vp9_get_ac_quant'
}

An implementation of "ac_q" function specified in "8.6.1 Dequantization functions"

Parameters:

qindex (Number) –

the quantizer index

delta_q_ac (Number) –

a delta_q_ac value

bit_depth (Number) –

coded bit depth

Returns (Number) –

the quantizer value for the ac coefficient

Since : 1.20

GstCodecs.vp9_get_ac_quant 

def GstCodecs.vp9_get_ac_quant (qindex, delta_q_ac, bit_depth):
    #python wrapper for 'gst_vp9_get_ac_quant'

An implementation of "ac_q" function specified in "8.6.1 Dequantization functions"

Parameters:

qindex (int) –

the quantizer index

delta_q_ac (int) –

a delta_q_ac value

bit_depth (int) –

coded bit depth

Returns (int) –

the quantizer value for the ac coefficient

Since : 1.20

gst_vp9_get_dc_quant 

gint16
gst_vp9_get_dc_quant (guint8 qindex,
                      gint8 delta_q_dc,
                      guint8 bit_depth)

An implementation of "dc_q" function specified in "8.6.1 Dequantization functions"

Parameters:

qindex –

the quantizer index

delta_q_dc –

a delta_q_dc value

bit_depth –

coded bit depth

Returns –

the quantizer value for the dc coefficient

Since : 1.20

GstCodecs.prototype.vp9_get_dc_quant 

function GstCodecs.prototype.vp9_get_dc_quant(qindex: Number, delta_q_dc: Number, bit_depth: Number): {
    // javascript wrapper for 'gst_vp9_get_dc_quant'
}

An implementation of "dc_q" function specified in "8.6.1 Dequantization functions"

Parameters:

qindex (Number) –

the quantizer index

delta_q_dc (Number) –

a delta_q_dc value

bit_depth (Number) –

coded bit depth

Returns (Number) –

the quantizer value for the dc coefficient

Since : 1.20

GstCodecs.vp9_get_dc_quant 

def GstCodecs.vp9_get_dc_quant (qindex, delta_q_dc, bit_depth):
    #python wrapper for 'gst_vp9_get_dc_quant'

An implementation of "dc_q" function specified in "8.6.1 Dequantization functions"

Parameters:

qindex (int) –

the quantizer index

delta_q_dc (int) –

a delta_q_dc value

bit_depth (int) –

coded bit depth

Returns (int) –

the quantizer value for the dc coefficient

Since : 1.20

gst_vp9_get_qindex 

guint8
gst_vp9_get_qindex (const GstVp9SegmentationParams * segmentation_params,
                    const GstVp9QuantizationParams * quantization_params,
                    guint8 segment_id)

An implementation of "get_qindex" function specfied in "8.6.1 Dequantization functions"

Parameters:

segmentation_params –

a GstVp9SegmentationParams

quantization_params –

a GstVp9QuantizationParams

segment_id –

a segment id

Returns –

the quantizer index

Since : 1.20

GstCodecs.prototype.vp9_get_qindex 

function GstCodecs.prototype.vp9_get_qindex(segmentation_params: GstCodecs.Vp9SegmentationParams, quantization_params: GstCodecs.Vp9QuantizationParams, segment_id: Number): {
    // javascript wrapper for 'gst_vp9_get_qindex'
}

An implementation of "get_qindex" function specfied in "8.6.1 Dequantization functions"

Parameters:

segmentation_params (GstCodecs.Vp9SegmentationParams) –

a GstCodecs.Vp9SegmentationParams

quantization_params (GstCodecs.Vp9QuantizationParams) –

a GstCodecs.Vp9QuantizationParams

segment_id (Number) –

a segment id

Returns (Number) –

the quantizer index

Since : 1.20

GstCodecs.vp9_get_qindex 

def GstCodecs.vp9_get_qindex (segmentation_params, quantization_params, segment_id):
    #python wrapper for 'gst_vp9_get_qindex'

An implementation of "get_qindex" function specfied in "8.6.1 Dequantization functions"

Parameters:

segmentation_params (GstCodecs.Vp9SegmentationParams) –

a GstCodecs.Vp9SegmentationParams

quantization_params (GstCodecs.Vp9QuantizationParams) –

a GstCodecs.Vp9QuantizationParams

segment_id (int) –

a segment id

Returns (int) –

the quantizer index

Since : 1.20

gst_vp9_seg_feature_active 

gboolean
gst_vp9_seg_feature_active (const GstVp9SegmentationParams * params,
                            guint8 segment_id,
                            guint8 feature)

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

Parameters:

params –

a GstVp9SegmentationParams

segment_id –

a segment id

feature –

a segmentation feature

Returns –

TRUE if feature is active

Since : 1.20

GstCodecs.prototype.vp9_seg_feature_active 

function GstCodecs.prototype.vp9_seg_feature_active(params: GstCodecs.Vp9SegmentationParams, segment_id: Number, feature: Number): {
    // javascript wrapper for 'gst_vp9_seg_feature_active'
}

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

Parameters:

a GstCodecs.Vp9SegmentationParams

segment_id (Number) –

a segment id

feature (Number) –

a segmentation feature

Returns (Number) –

true if feature is active

Since : 1.20

GstCodecs.vp9_seg_feature_active 

def GstCodecs.vp9_seg_feature_active (params, segment_id, feature):
    #python wrapper for 'gst_vp9_seg_feature_active'

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

Parameters:

a GstCodecs.Vp9SegmentationParams

segment_id (int) –

a segment id

feature (int) –

a segmentation feature

Returns (bool) –

True if feature is active

Since : 1.20

Enumerations

GstVp9ReferenceMode

Reference modes: Specify the type of inter prediction to be used

Members
GST_VP9_REFERENCE_MODE_SINGLE_REFERENCE (0) –

Indicates that all the inter blocks use only a single reference frame

GST_VP9_REFERENCE_MODE_COMPOUND_REFERENCE (1) –

Requires all the inter blocks to use compound mode

GST_VP9_REFERENCE_MODE_SELECT (2) –

Allows each individual inter block to select between single and compound prediction modes

Since : 1.20

GstCodecs.Vp9ReferenceMode

Reference modes: Specify the type of inter prediction to be used

Members
GstCodecs.Vp9ReferenceMode.SINGLE_REFERENCE (0) –

Indicates that all the inter blocks use only a single reference frame

GstCodecs.Vp9ReferenceMode.COMPOUND_REFERENCE (1) –

Requires all the inter blocks to use compound mode

GstCodecs.Vp9ReferenceMode.SELECT (2) –

Allows each individual inter block to select between single and compound prediction modes

Since : 1.20

GstCodecs.Vp9ReferenceMode

Reference modes: Specify the type of inter prediction to be used

Members
GstCodecs.Vp9ReferenceMode.SINGLE_REFERENCE (0) –

Indicates that all the inter blocks use only a single reference frame

GstCodecs.Vp9ReferenceMode.COMPOUND_REFERENCE (1) –

Requires all the inter blocks to use compound mode

GstCodecs.Vp9ReferenceMode.SELECT (2) –

Allows each individual inter block to select between single and compound prediction modes

Since : 1.20

GstVp9TxMode

TxMode: Specifies how the transform size is determined

Members
GST_VP9_TX_MODE_ONLY_4x4 (0) –

Only 4x4

GST_VP9_TX_MODE_ALLOW_8x8 (1) –

Allow 8x8

GST_VP9_TX_MODE_ALLOW_16x16 (2) –

Allow 16x16

GST_VP9_TX_MODE_ALLOW_32x32 (3) –

Allow 32x32

GST_VP9_TX_MODE_SELECT (4) –

The choice is specified explicitly for each block

Since : 1.20

GstCodecs.Vp9TxMode

TxMode: Specifies how the transform size is determined

Members
GstCodecs.Vp9TxMode.ONLY_4X4 (0) –

Only 4x4

GstCodecs.Vp9TxMode.ALLOW_8X8 (1) –

Allow 8x8

GstCodecs.Vp9TxMode.ALLOW_16X16 (2) –

Allow 16x16

GstCodecs.Vp9TxMode.ALLOW_32X32 (3) –

Allow 32x32

GstCodecs.Vp9TxMode.SELECT (4) –

The choice is specified explicitly for each block

Since : 1.20

GstCodecs.Vp9TxMode

TxMode: Specifies how the transform size is determined

Members
GstCodecs.Vp9TxMode.ONLY_4X4 (0) –

Only 4x4

GstCodecs.Vp9TxMode.ALLOW_8X8 (1) –

Allow 8x8

GstCodecs.Vp9TxMode.ALLOW_16X16 (2) –

Allow 16x16

GstCodecs.Vp9TxMode.ALLOW_32X32 (3) –

Allow 32x32

GstCodecs.Vp9TxMode.SELECT (4) –

The choice is specified explicitly for each block

Since : 1.20

GstVp9TxSize

TxSize: Specifies the transform size

Members
GST_VP9_TX_4x4 (0) –

4x4

GST_VP9_TX_8x8 (1) –

8x8

GST_VP9_TX_16x16 (2) –

16x16

GST_VP9_TX_32x32 (3) –

32x32

Since : 1.20

GstCodecs.Vp9TxSize

TxSize: Specifies the transform size

Members
GstCodecs.Vp9TxSize.4X4 (0) –

4x4

GstCodecs.Vp9TxSize.8X8 (1) –

8x8

GstCodecs.Vp9TxSize.16X16 (2) –

16x16

GstCodecs.Vp9TxSize.32X32 (3) –

32x32

Since : 1.20

GstCodecs.Vp9TxSize

TxSize: Specifies the transform size

Members
GstCodecs.Vp9TxSize.4X4 (0) –

4x4

GstCodecs.Vp9TxSize.8X8 (1) –

8x8

GstCodecs.Vp9TxSize.16X16 (2) –

16x16

GstCodecs.Vp9TxSize.32X32 (3) –

32x32

Since : 1.20

Constants

GST_VP9_BLOCK_SIZE_GROUPS 

#define GST_VP9_BLOCK_SIZE_GROUPS 4

Number of contexts when decoding intra_mode

Since : 1.20

GstCodecs.VP9_BLOCK_SIZE_GROUPS

Number of contexts when decoding intra_mode

Since : 1.20

GstCodecs.VP9_BLOCK_SIZE_GROUPS

Number of contexts when decoding intra_mode

Since : 1.20

GST_VP9_CLASS0_SIZE 

#define GST_VP9_CLASS0_SIZE 2

Number of values for mv_classO_bit

Since : 1.20

GstCodecs.VP9_CLASS0_SIZE

Number of values for mv_classO_bit

Since : 1.20

GstCodecs.VP9_CLASS0_SIZE

Number of values for mv_classO_bit

Since : 1.20

GST_VP9_COMP_MODE_CONTEXTS 

#define GST_VP9_COMP_MODE_CONTEXTS 5

Number of contexts for comp_mode

Since : 1.20

GstCodecs.VP9_COMP_MODE_CONTEXTS

Number of contexts for comp_mode

Since : 1.20

GstCodecs.VP9_COMP_MODE_CONTEXTS

Number of contexts for comp_mode

Since : 1.20

GST_VP9_INTERP_FILTER_CONTEXTS 

#define GST_VP9_INTERP_FILTER_CONTEXTS 4

Number of contexts for interp_filter

Since : 1.20

GstCodecs.VP9_INTERP_FILTER_CONTEXTS

Number of contexts for interp_filter

Since : 1.20

GstCodecs.VP9_INTERP_FILTER_CONTEXTS

Number of contexts for interp_filter

Since : 1.20

GST_VP9_INTER_MODES 

#define GST_VP9_INTER_MODES 4

Number of values for inter_mode

Since : 1.20

GstCodecs.VP9_INTER_MODES

Number of values for inter_mode

Since : 1.20

GstCodecs.VP9_INTER_MODES

Number of values for inter_mode

Since : 1.20

GST_VP9_INTER_MODE_CONTEXTS 

#define GST_VP9_INTER_MODE_CONTEXTS 7

Number of contexts for inter_mode

Since : 1.20

GstCodecs.VP9_INTER_MODE_CONTEXTS

Number of contexts for inter_mode

Since : 1.20

GstCodecs.VP9_INTER_MODE_CONTEXTS

Number of contexts for inter_mode

Since : 1.20

GST_VP9_INTRA_MODES 

#define GST_VP9_INTRA_MODES 10

Number of values for intra_mode

Since : 1.20

GstCodecs.VP9_INTRA_MODES

Number of values for intra_mode

Since : 1.20

GstCodecs.VP9_INTRA_MODES

Number of values for intra_mode

Since : 1.20

GST_VP9_IS_INTER_CONTEXTS 

#define GST_VP9_IS_INTER_CONTEXTS 4

Number of contexts for interp_filter

Since : 1.20

GstCodecs.VP9_IS_INTER_CONTEXTS

Number of contexts for interp_filter

Since : 1.20

GstCodecs.VP9_IS_INTER_CONTEXTS

Number of contexts for interp_filter

Since : 1.20

GST_VP9_MV_CLASSES 

#define GST_VP9_MV_CLASSES 11

Number of values for mv_class

Since : 1.20

GstCodecs.VP9_MV_CLASSES

Number of values for mv_class

Since : 1.20

GstCodecs.VP9_MV_CLASSES

Number of values for mv_class

Since : 1.20

GST_VP9_MV_FR_SIZE 

#define GST_VP9_MV_FR_SIZE 4

Number of values that can be decoded for mv_fr

Since : 1.20

GstCodecs.VP9_MV_FR_SIZE

Number of values that can be decoded for mv_fr

Since : 1.20

GstCodecs.VP9_MV_FR_SIZE

Number of values that can be decoded for mv_fr

Since : 1.20

GST_VP9_MV_JOINTS 

#define GST_VP9_MV_JOINTS 4

Number of values for partition

Since : 1.20

GstCodecs.VP9_MV_JOINTS

Number of values for partition

Since : 1.20

GstCodecs.VP9_MV_JOINTS

Number of values for partition

Since : 1.20

GST_VP9_MV_OFFSET_BITS 

#define GST_VP9_MV_OFFSET_BITS 10

Maximum number of bits for decoding motion vectors

Since : 1.20

GstCodecs.VP9_MV_OFFSET_BITS

Maximum number of bits for decoding motion vectors

Since : 1.20

GstCodecs.VP9_MV_OFFSET_BITS

Maximum number of bits for decoding motion vectors

Since : 1.20

GST_VP9_PARTITION_CONTEXTS 

#define GST_VP9_PARTITION_CONTEXTS 16

Number of contexts when decoding partition

Since : 1.20

GstCodecs.VP9_PARTITION_CONTEXTS

Number of contexts when decoding partition

Since : 1.20

GstCodecs.VP9_PARTITION_CONTEXTS

Number of contexts when decoding partition

Since : 1.20

GST_VP9_PARTITION_TYPES 

#define GST_VP9_PARTITION_TYPES 4

Number of values for partition

Since : 1.20

GstCodecs.VP9_PARTITION_TYPES

Number of values for partition

Since : 1.20

GstCodecs.VP9_PARTITION_TYPES

Number of values for partition

Since : 1.20

GST_VP9_REF_CONTEXTS 

#define GST_VP9_REF_CONTEXTS 5

Number of contexts for single_ref and comp_ref

Since : 1.20

GstCodecs.VP9_REF_CONTEXTS

Number of contexts for single_ref and comp_ref

Since : 1.20

GstCodecs.VP9_REF_CONTEXTS

Number of contexts for single_ref and comp_ref

Since : 1.20

GST_VP9_SEG_LVL_ALT_L 

#define GST_VP9_SEG_LVL_ALT_L 1

Index for loop filter segment feature

Since : 1.20

GstCodecs.VP9_SEG_LVL_ALT_L

Index for loop filter segment feature

Since : 1.20

GstCodecs.VP9_SEG_LVL_ALT_L

Index for loop filter segment feature

Since : 1.20

GST_VP9_SEG_LVL_ALT_Q 

#define GST_VP9_SEG_LVL_ALT_Q 0

Index for quantizer segment feature

Since : 1.20

GstCodecs.VP9_SEG_LVL_ALT_Q

Index for quantizer segment feature

Since : 1.20

GstCodecs.VP9_SEG_LVL_ALT_Q

Index for quantizer segment feature

Since : 1.20

GST_VP9_SEG_LVL_MAX 

#define GST_VP9_SEG_LVL_MAX 4

Number of segment features

Since : 1.20

GstCodecs.VP9_SEG_LVL_MAX

Number of segment features

Since : 1.20

GstCodecs.VP9_SEG_LVL_MAX

Number of segment features

Since : 1.20

GST_VP9_SEG_LVL_REF_FRAME 

#define GST_VP9_SEG_LVL_REF_FRAME 2

Index for reference frame segment feature

Since : 1.20

GstCodecs.VP9_SEG_LVL_REF_FRAME

Index for reference frame segment feature

Since : 1.20

GstCodecs.VP9_SEG_LVL_REF_FRAME

Index for reference frame segment feature

Since : 1.20

GST_VP9_SEG_SEG_LVL_SKIP 

#define GST_VP9_SEG_SEG_LVL_SKIP 3

Index for skip segment feature

Since : 1.20

GstCodecs.VP9_SEG_SEG_LVL_SKIP

Index for skip segment feature

Since : 1.20

GstCodecs.VP9_SEG_SEG_LVL_SKIP

Index for skip segment feature

Since : 1.20

GST_VP9_SKIP_CONTEXTS 

#define GST_VP9_SKIP_CONTEXTS 3

Number of contexts for decoding skip

Since : 1.20

GstCodecs.VP9_SKIP_CONTEXTS

Number of contexts for decoding skip

Since : 1.20

GstCodecs.VP9_SKIP_CONTEXTS

Number of contexts for decoding skip

Since : 1.20

GST_VP9_SWITCHABLE_FILTERS 

#define GST_VP9_SWITCHABLE_FILTERS 3

Number of contexts for interp_filter

Since : 1.20

GstCodecs.VP9_SWITCHABLE_FILTERS

Number of contexts for interp_filter

Since : 1.20

GstCodecs.VP9_SWITCHABLE_FILTERS

Number of contexts for interp_filter

Since : 1.20

GST_VP9_TX_MODES 

#define GST_VP9_TX_MODES 5

Number of values for tx_mode

Since : 1.20

GstCodecs.VP9_TX_MODES

Number of values for tx_mode

Since : 1.20

GstCodecs.VP9_TX_MODES

Number of values for tx_mode

Since : 1.20

GST_VP9_TX_SIZES 

#define GST_VP9_TX_SIZES 4

Number of values for tx_size

Since : 1.20

GstCodecs.VP9_TX_SIZES

Number of values for tx_size

Since : 1.20

GstCodecs.VP9_TX_SIZES

Number of values for tx_size

Since : 1.20

GST_VP9_TX_SIZE_CONTEXTS 

#define GST_VP9_TX_SIZE_CONTEXTS 2

Number of contexts for transform size

Since : 1.20

GstCodecs.VP9_TX_SIZE_CONTEXTS

Number of contexts for transform size

Since : 1.20

GstCodecs.VP9_TX_SIZE_CONTEXTS

Number of contexts for transform size

Since : 1.20

The results of the search are