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5196f24138
Fix MPEG-4 and VP8 APIs to export their external symbols as pure C symbols, i.e. un-mangled for C++. https://bugzilla.gnome.org/show_bug.cgi?id=731522 Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
338 lines
11 KiB
C
338 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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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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void
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gst_vp8_parser_init (GstVp8Parser * parser);
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GstVp8ParserResult
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gst_vp8_parser_parse_frame_header (GstVp8Parser * parser,
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GstVp8FrameHdr * frame_hdr, const guint8 * data, gsize size);
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G_END_DECLS
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#endif /* GST_VP8_PARSER_H */
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