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a05006944a
We need different export decorators for the different libs. For now no actual change though, just rename before the release, and add prelude headers to define the new decorator to GST_EXPORT.
341 lines
11 KiB
C
341 lines
11 KiB
C
/*
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* gstvp8parser.h - VP8 parser
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*
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* Copyright (C) 2013-2014 Intel Corporation
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* Author: Halley Zhao <halley.zhao@intel.com>
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* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef GST_VP8_PARSER_H
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#define GST_VP8_PARSER_H
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#include <gst/gst.h>
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#include <gst/codecparsers/codecparsers-prelude.h>
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G_BEGIN_DECLS
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typedef struct _GstVp8FrameHdr GstVp8FrameHdr;
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typedef struct _GstVp8QuantIndices GstVp8QuantIndices;
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typedef struct _GstVp8Segmentation GstVp8Segmentation;
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typedef struct _GstVp8MbLfAdjustments GstVp8MbLfAdjustments;
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typedef struct _GstVp8TokenProbs GstVp8TokenProbs;
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typedef struct _GstVp8MvProbs GstVp8MvProbs;
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typedef struct _GstVp8ModeProbs GstVp8ModeProbs;
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typedef struct _GstVp8Parser GstVp8Parser;
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/**
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* GstVp8ParserResult:
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* @GST_VP8_PARSER_OK: The parsing succeeded
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* @GST_VP8_PARSER_BROKEN_DATA: The data to parse is broken
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* @GST_VP8_PARSER_ERROR: An error accured when parsing
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*
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* The result of parsing VP8 data.
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*/
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typedef enum {
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GST_VP8_PARSER_OK,
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GST_VP8_PARSER_BROKEN_DATA,
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GST_VP8_PARSER_ERROR,
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} GstVp8ParserResult;
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/**
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* GstVpQuantIndices:
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* @y_ac_qi: indicates the dequantization table index used for the
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* luma AC coefficients
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* @y_dc_delta: indicates the delta value that is added to the
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* baseline index to obtain the luma DC coefficient dequantization
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* index
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* @y2_dc_delta: indicates the delta value that is added to the
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* baseline index to obtain the Y2 block DC coefficient dequantization
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* index
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* @y2_ac_delta: indicates the delta value that is added to the
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* baseline index to obtain the Y2 block AC coefficient dequantization
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* index
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* @uv_dc_delta: indicates the delta value that is added to the
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* baseline index to obtain the chroma DC coefficient dequantization
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* index
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* @uv_ac_delta: indicates the delta value that is added to the
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* baseline index to obtain the chroma AC coefficient dequantization
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* index
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*
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* Dequantization indices.
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*/
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struct _GstVp8QuantIndices
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{
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guint8 y_ac_qi;
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gint8 y_dc_delta;
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gint8 y2_dc_delta;
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gint8 y2_ac_delta;
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gint8 uv_dc_delta;
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gint8 uv_ac_delta;
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};
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/**
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* GstVp8Segmentation:
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* @segmentation_enabled: enables the segmentation feature for the
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* current frame
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* @update_mb_segmentation_map: determines if the MB segmentation map
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* is updated in the current frame
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* @update_segment_feature_data: indicates if the segment feature data
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* is updated in the current frame
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* @segment_feature_mode: indicates the feature data update mode (0:
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* delta, 1: absolute value)
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* @quantizer_update_value: indicates the update value for the segment
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* quantizer
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* @lf_update_value: indicates the update value for the loop filter level
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* @segment_prob: indicates the branch probabilities of the segment_id
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* decoding tree
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*
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* Segmentation feature data.
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*/
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struct _GstVp8Segmentation
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{
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guint8 segmentation_enabled;
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guint8 update_mb_segmentation_map;
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guint8 update_segment_feature_data;
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/* if update_segment_feature_data == 1 */
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guint8 segment_feature_mode;
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gint8 quantizer_update_value[4];
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gint8 lf_update_value[4];
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/* if update_mb_segmentation_map == 1 */
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guint8 segment_prob[3];
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};
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/**
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* GstVp8MbLfAdjustments:
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* @loop_filter_adj_enable: indicates if the MB-level loop filter
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* adjustment is on for the current frame
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* @mode_ref_lf_delta_update: indicates if the delta values used in an
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* adjustment are updated in the current frame
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* @ref_frame_delta: indicates the adjustment delta value
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* corresponding to a certain used reference frame
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* @mb_mode_delta: indicates the adjustment delta value corresponding
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* to a certain MB prediction mode
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*
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* MB-level loop filter adjustments.
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*/
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struct _GstVp8MbLfAdjustments
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{
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guint8 loop_filter_adj_enable;
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guint8 mode_ref_lf_delta_update;
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/* if mode_ref_lf_delta_update == 1 */
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gint8 ref_frame_delta[4];
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gint8 mb_mode_delta[4];
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};
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/**
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* GstVp8TokenProbs:
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* @prob: token probability
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*
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* Token probabilities, with cumulative updates applied.
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*
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* Each probability value in this matrix is live across frames, until
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* they are reset to their default values on key frame.
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*/
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struct _GstVp8TokenProbs
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{
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guint8 prob[4][8][3][11];
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};
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/**
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* GstVp8MvProbs:
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* @prob: MV probability
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*
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* Probabilities used for motion vector decoding, with cumulative
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* updates applied.
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*
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* Each probability value in this matrix is live across frames, until
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* they are reset to their default values on key frame.
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*/
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struct _GstVp8MvProbs
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{
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guint8 prob[2][19];
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};
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/**
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* GstVp8ModeProbs:
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* @y_prob: indicates the branch probabilities of the luma
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* intra-prediction mode decoding tree
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* @uv_prob: indicates the branch probabilities of the chroma
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* intra-prediction mode decoding tree
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*
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* Probabilities used for intra-prediction mode decoding tree.
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*
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* Each probability value in thie structure is live across frames,
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* until they are reset to their default values on key frame.
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*/
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struct _GstVp8ModeProbs
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{
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guint8 y_prob[4];
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guint8 uv_prob[3];
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};
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/**
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* GstVp8FrameHdr:
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* @key_frame: indicates whether the frame is a key frame (1), or an
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* inter frame (0)
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* @version: version number
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* @show_frame: indicates whether the frame is meant to be displayed (1),
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* or not (0)
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* @data_chunk_size: the size in bytes of the Uncompressed Data Chunk
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* @first_part_size: the size in bytes of the first partition (control
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* partition), excluding the uncompressed data chunk
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* @width: the frame width in pixels
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* @height: the frame height in pixels
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* @horiz_scale_code: horizontal scale code value
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* @vert_scale_code: vertical scale code value
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* @color_space: defines the YUV color space of the sequence
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* @clamping_type: specifies if the decoder is required to clamp the
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* reconstructed pixel values
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* @filter_type: determines whether the normal or the simple loop
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* filter is used
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* @loop_filter_level: controls the deblocking filter
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* @sharpness_level: controls the deblocking filter
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* @log2_nbr_of_dct_partitions: determines the number of separate
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* partitions containing the DCT coefficients of the macroblocks
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* @partition_size: determines the size of each separate partition
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* containing the DCT coefficients of the macroblocks, including the
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* very last one (calculated size)
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* @quant_indices: dequantization indices (see #GstVp8QuantIndices)
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* @token_probs: token probabilities (see #GstVp8TokenProbs)
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* @mv_probs: probabilities used for motion vector decoding
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* (see #GstVp8MvProbs)
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* @mode_probs: probabilities used for intra-prediction mode decoding
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* tree (see #GstVp8ModeProbs)
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* @refresh_entropy_probs: determines whether updated token
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* probabilities are used only for this frame or until further update
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* @refresh_golden_frame: determines if the current decoded frame
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* refreshes the golden frame
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* @refresh_alternate_frame: determines if the current decoded frame
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* refreshes the alternate reference frame
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* @copy_buffer_to_golden: determines if the golden reference is
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* replaced by another reference
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* @copy_buffer_to_alternate: determines if the alternate reference is
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* replaced by another reference
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* @sign_bias_golden: controls the sign of motion vectors when the
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* golden frame is referenced
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* @sign_bias_alternate: controls the sign of motion vectors when the
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* alternate frame is referenced
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* @refresh_last: determines if the current decoded frame refreshes
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* the last frame reference buffer
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* @mb_no_skip_coeff: enables (0) or disables (1) the skipping of
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* macroblocks containing no non-zero coefficients
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* @prob_skip_false: indicates the probability that the macroblock is
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* not skipped
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* @prob_intra: indicates the probability of an intra macroblock
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* @prob_last: indicates the probability that the last reference frame
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* is used for inter-prediction
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* @prob_gf: indicates the probability that the golden reference frame
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* is used for inter-prediction
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* @rd_range: last range decoder value for "Range"
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* @rd_value: last range decoder value for "Value"
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* @rd_count: number of bits left in range decoder "Value" (@rd_value)
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* @header_size: the size in bits of the Frame Header, thus excluding
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* any Uncompressed Data Chunk bytes
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*
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* Frame header.
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*/
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struct _GstVp8FrameHdr
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{
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guint8 key_frame;
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guint8 version;
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guint8 show_frame;
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guint8 data_chunk_size;
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guint32 first_part_size;
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/* if key_frame == 1 */
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guint16 width;
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guint16 height;
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guint8 horiz_scale_code;
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guint8 vert_scale_code;
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guint8 color_space;
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guint8 clamping_type;
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guint8 filter_type;
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guint8 loop_filter_level;
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guint8 sharpness_level;
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guint8 log2_nbr_of_dct_partitions;
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guint partition_size[8];
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GstVp8QuantIndices quant_indices;
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GstVp8TokenProbs token_probs;
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GstVp8MvProbs mv_probs;
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GstVp8ModeProbs mode_probs;
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guint8 refresh_entropy_probs;
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guint8 refresh_last;
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/* if key_frame != 1 */
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guint8 refresh_golden_frame;
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guint8 refresh_alternate_frame;
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guint8 copy_buffer_to_golden;
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guint8 copy_buffer_to_alternate;
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guint8 sign_bias_golden;
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guint8 sign_bias_alternate;
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guint8 mb_no_skip_coeff;
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guint8 prob_skip_false;
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/* if key_frame != 1 */
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guint8 prob_intra;
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guint8 prob_last;
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guint8 prob_gf;
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/* Range decoder state */
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guint8 rd_range;
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guint8 rd_value;
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guint8 rd_count;
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/* Size of the Frame Header in bits */
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guint header_size;
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};
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/**
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* GstVp8Parser:
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* @segmentation: segmentation feature data
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* @mb_lf_adjust: MB-level loop filter adjustments
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* @token_probs: token probabilities
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* @mv_probs: probabilities used for motion vector decoding
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* @mode_probs: probabilities used for intra-prediction mode decoding tree.
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*
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* Parser context that needs to be live across frames. For instance
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* the probabilities tables stored in #GstVp8FrameHdr may depend on
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* the previous frames.
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*/
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struct _GstVp8Parser
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{
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GstVp8Segmentation segmentation;
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GstVp8MbLfAdjustments mb_lf_adjust;
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GstVp8TokenProbs token_probs;
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GstVp8MvProbs mv_probs;
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GstVp8ModeProbs mode_probs;
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};
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GST_CODEC_PARSERS_API
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void gst_vp8_parser_init (GstVp8Parser * parser);
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GST_CODEC_PARSERS_API
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GstVp8ParserResult gst_vp8_parser_parse_frame_header (GstVp8Parser * parser,
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GstVp8FrameHdr * frame_hdr,
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const guint8 * data,
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gsize size);
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G_END_DECLS
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#endif /* GST_VP8_PARSER_H */
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