gstreamer/gst-libs/gst/codecparsers/gstvp9parser.h
Yeongjin Jeong 454147d269 vp9parser: Add new API for parsing superframe info
Some elements are using their own implementations for superframe parsing.
To reduce redundant code, we need to add API to the parser.
2020-03-02 01:31:38 +09:00

522 lines
16 KiB
C

/*
* gstvp9parser.h
*
* Copyright (C) 2013-2014 Intel Corporation
* Copyright (C) 2015 Intel Corporation
* Author: XuGuangxin<Guangxin.Xu@intel.com>
* Author: Sreerenj Balachandran<sreerenj.balachandran@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef GST_VP9_PARSER_H
#define GST_VP9_PARSER_H
#ifndef GST_USE_UNSTABLE_API
#warning "The VP9 parsing library is unstable API and may change in future."
#warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
#endif
#include <gst/gst.h>
#include <gst/codecparsers/codecparsers-prelude.h>
G_BEGIN_DECLS
#define GST_VP9_FRAME_MARKER 0x02
#define GST_VP9_SYNC_CODE 0x498342
#define GST_VP9_SUPERFRAME_MARKER 0x06
#define GST_VP9_MAX_LOOP_FILTER 63
#define GST_VP9_MAX_PROB 255
#define GST_VP9_REFS_PER_FRAME 3
#define GST_VP9_REF_FRAMES_LOG2 3
#define GST_VP9_REF_FRAMES (1 << GST_VP9_REF_FRAMES_LOG2)
#define GST_VP9_FRAME_CONTEXTS_LOG2 2
#define GST_VP9_MAX_LOOP_FILTER 63
#define GST_VP9_MAX_SHARPNESS 7
#define GST_VP9_MAX_REF_LF_DELTAS 4
#define GST_VP9_MAX_MODE_LF_DELTAS 2
#define GST_VP9_SEGMENT_DELTADATA 0
#define GST_VP9_SEGMENT_ABSDATA 1
#define GST_VP9_MAX_SEGMENTS 8
#define GST_VP9_SEG_TREE_PROBS (GST_VP9_MAX_SEGMENTS-1)
#define GST_VP9_PREDICTION_PROBS 3
#define GST_VP9_MAX_FRAMES_IN_SUPERFRAME 8
typedef struct _GstVp9Parser GstVp9Parser;
typedef struct _GstVp9FrameHdr GstVp9FrameHdr;
typedef struct _GstVp9LoopFilter GstVp9LoopFilter;
typedef struct _GstVp9QuantIndices GstVp9QuantIndices;
typedef struct _GstVp9Segmentation GstVp9Segmentation;
typedef struct _GstVp9SegmentationInfo GstVp9SegmentationInfo;
typedef struct _GstVp9SegmentationInfoData GstVp9SegmentationInfoData;
typedef struct _GstVp9SuperframeInfo GstVp9SuperframeInfo;
/**
* GstVp9ParseResult:
* @GST_VP9_PARSER_OK: The parsing went well
* @GST_VP9_PARSER_BROKEN_DATA: The data to parse is broken
* @GST_VP9_PARSER_NO_PACKET_ERROR: An error occurred during the parsing
*
* Result type of any parsing function.
*
* Since: 1.8
*/
typedef enum
{
GST_VP9_PARSER_OK,
GST_VP9_PARSER_BROKEN_DATA,
GST_VP9_PARSER_ERROR,
} GstVp9ParserResult;
/**
* GstVp9Profile: Bitstream profiles indicated by 2-3 bits in the uncompressed header
* @GST_VP9_PROFILE_0: Profile 0, 8-bit 4:2:0 only.
* @GST_VP9_PROFILE_1: Profile 1, 8-bit 4:4:4, 4:2:2, and 4:4:0.
* @GST_VP9_PROFILE_2: Profile 2, 10-bit and 12-bit color only, with 4:2:0 sampling.
* @GST_VP9_PROFILE_3: Profile 3, 10-bit and 12-bit color only, with 4:2:2/4:4:4/4:4:0 sampling.
* @GST_VP9_PROFILE_UNDEFINED: Undefined profile
*
* VP9 Profiles
*
* Since: 1.8
*/
typedef enum {
GST_VP9_PROFILE_0,
GST_VP9_PROFILE_1,
GST_VP9_PROFILE_2,
GST_VP9_PROFILE_3,
GST_VP9_PROFILE_UNDEFINED
} GstVP9Profile;
/**
* GstVp9FrameType:
* @GST_VP9_KEY_FRAME: Key frame, only have intra blocks
* @GST_VP9_INTER_FRAME: Inter frame, both intra and inter blocks
*
* VP9 frame types
*
* Since: 1.8
*/
typedef enum {
GST_VP9_KEY_FRAME = 0,
GST_VP9_INTER_FRAME = 1
} GstVp9FrameType;
/**
* GstVp9BitDepth:
* @GST_VP9_BIT_DEPTH_8: Bit depth is 8
* @GST_VP9_BIT_DEPTH_10 Bit depth is 10
* @GST_VP9_BIT_DEPTH_12:Bit depth is 12
*
* Bit depths of encoded frames
*
* Since: 1.8
*/
typedef enum {
GST_VP9_BIT_DEPTH_8 = 8,
GST_VP9_BIT_DEPTH_10 = 10,
GST_VP9_BIT_DEPTH_12 = 12
} GstVp9BitDepth;
/**
* GstVp9ColorSpace:
* @GST_VP9_CS_UNKNOWN: Unknown color space
* @GST_VP9_CS_BT_601: BT.601
* @GST_VP9_CS_BT_709: BT.709
* @GST_VP9_CS_SMPTE_170: SMPTE.170
* @GST_VP9_CS_SMPTE_240: SMPTE.240
* @GST_VP9_CS_BT_2020: BT.2020
* @GST_VP9_CS_RESERVED: Reserved
* @GST_VP9_CS_SRGB: sRGB
*
* Supported ColorSpace standards
*
* Since: 1.8
*/
typedef enum {
GST_VP9_CS_UNKNOWN = 0,
GST_VP9_CS_BT_601 = 1,
GST_VP9_CS_BT_709 = 2,
GST_VP9_CS_SMPTE_170 = 3,
GST_VP9_CS_SMPTE_240 = 4,
GST_VP9_CS_BT_2020 = 5,
GST_VP9_CS_RESERVED_2 = 6,
GST_VP9_CS_SRGB = 7
} GstVp9ColorSpace;
/**
* GstVp9ColorRange:
* @GST_VP9_CR_LIMITED: Y range is [16-235], UV range is [16-240]
* @GST_VP9_CR_FULL: Full range for Y,U and V [0-255]
*
* Possible color value ranges
*
* Since: 1.8
*/
typedef enum {
GST_VP9_CR_LIMITED,
GST_VP9_CR_FULL
} GstVp9ColorRange;
/**
* GstVp9InterpolationFilter:
* @GST_VP9_INTERPOLATION_FILTER_EIGHTTAP: EightTap interpolation filter
* @GST_VP9_INTERPOLATION_FILTER_EIGHTTAP_SMOOTH: Smooth interpolation filter
* @GST_VP9_INTERPOLATION_FILTER_EIGHTTAP_SHARP: Shart interpolation filter
* @GST_VP9_INTERPOLATION_FILTER_BILINEAR: Bilinear interpolation filter
* @GST_VP9_INTERPOLATION_FILTER_SWITCHABLE: Selectable interpolation filter
*
* Interpolation Filters Types
*
* Since: 1.8
*/
typedef enum {
GST_VP9_INTERPOLATION_FILTER_EIGHTTAP = 0,
GST_VP9_INTERPOLATION_FILTER_EIGHTTAP_SMOOTH = 1,
GST_VP9_INTERPOLATION_FILTER_EIGHTTAP_SHARP = 2,
GST_VP9_INTERPOLATION_FILTER_BILINEAR = 3,
GST_VP9_INTERPOLATION_FILTER_SWITCHABLE = 4
} GstVp9InterpolationFilter;
/**
* GstVp9RefFrameType:
* @GST_VP9_REF_FRAME_INTRA: Intra reference frame
* @GST_VP9_REF_FRAME_LAST: Last Reference frame
* @GST_VP9_REF_FRAME_GOLDEN: Golden Reference frame
* @GST_VP9_REF_FRAME_ALTREF: Alternate Reference frame
* @GST_VP9_REF_FRAME_MAX:
*
* Reference Frame types
*
* Since: 1.8
*/
typedef enum {
GST_VP9_REF_FRAME_INTRA = 0,
GST_VP9_REF_FRAME_LAST = 1,
GST_VP9_REF_FRAME_GOLDEN = 2,
GST_VP9_REF_FRAME_ALTREF = 3,
GST_VP9_REF_FRAME_MAX = 4
} GstVp9RefFrameType;
/**
* GstVp9QuantIndices:
* @y_ac_qi: indicates the dequantization table index used for the
* luma AC coefficients
* @y_dc_delta: indicates the delta value that is added to the
* baseline index to obtain the luma DC coefficient dequantization
* index
* @uv_dc_delta: indicates the delta value that is added to the
* baseline index to obtain the chroma DC coefficient dequantization
* index
* @uv_ac_delta: indicates the delta value that is added to the
* baseline index to obtain the chroma AC coefficient dequantization
* index
*
* Dequantization indices.
*
* Since: 1.8
*/
struct _GstVp9QuantIndices
{
guint8 y_ac_qi;
gint8 y_dc_delta;
gint8 uv_dc_delta;
gint8 uv_ac_delta;
};
/**
* GstVp9LoopFilter:
* @filter_level: indicates loop filter level for the current frame
* @sharpness_level: indicates sharpness level for thecurrent frame
* @mode_ref_delta_enabled: indicate if filter adjust is on
* @mode_ref_delta_update: indicates if the delta values used in an
* adjustment are updated in the current frame
* @update_ref_deltas: indicate which ref deltas are updated
* @ref_deltas: Loop filter strength adjustments based on
* frame type (intra, inter)
* @update_mode_deltas: indicate with mode deltas are updated
* @mode_deltas: Loop filter strength adjustments based on
* mode (zero, new mv)
*
* Loop filter values
*
* Since: 1.8
*/
struct _GstVp9LoopFilter {
gint filter_level;
gint sharpness_level;
guint8 mode_ref_delta_enabled;
guint8 mode_ref_delta_update;
guint8 update_ref_deltas[GST_VP9_MAX_REF_LF_DELTAS];
gint8 ref_deltas[GST_VP9_MAX_REF_LF_DELTAS];
guint8 update_mode_deltas[GST_VP9_MAX_MODE_LF_DELTAS];
gint8 mode_deltas[GST_VP9_MAX_MODE_LF_DELTAS];
};
/**
* GstVp9SegmentationInfoData:
* @alternate_quantizer_enabled: indicate alternate quantizer enabled at segment level
* @alternate_quantizer: alternate quantizer value
* @alternate_loop_filter_enabled: indicate alternate loop filter enabled at segment level
* @alternate_loop_filter: alternate loop filter
* @reference_frame_enabled: indicate alternate reference frame at segment level
* @reference_frame: alternate reference frame
* @reference_skip: a block skip mode that implies both the use of a (0,0)
* motion vector and that no residual will be coded.
*
* Segmentation info for each segment
*
* Since: 1.8
*/
struct _GstVp9SegmentationInfoData {
/* SEG_LVL_ALT_Q */
guint8 alternate_quantizer_enabled;
gint16 alternate_quantizer;
/* SEG_LVL_ALT_LF */
guint8 alternate_loop_filter_enabled;
gint8 alternate_loop_filter;
/* SEG_LVL_REF_FRAME */
guint8 reference_frame_enabled;
gint reference_frame;
guint8 reference_skip;
};
/**
* GstVp9SegmentationInfo:
* @enabled: enables the segmentation feature for the current frame
* @update_map: determines if segmentation is updated in the current frame
* @update_tree_probs: determines if tree probabilities updated or not
* @tree_probs: segment tree probabilities
* @update_pred_probs:determines if prediction probabilities updated or not
* @pred_probs: prediction probabilities
* @abs_delta: interpretation of segment data values
* @temporal_update: type of map update
* @update_data: indicates if the segment feature data
* is updated in the current frame
* @data: segment feature data
*
* Segmentation info
*
* Since: 1.8
*/
struct _GstVp9SegmentationInfo {
/* enable in setup_segmentation*/
guint8 enabled;
/* update_map in setup_segmentation*/
guint8 update_map;
/* tree_probs exist or not*/
guint8 update_tree_probs[GST_VP9_SEG_TREE_PROBS];
guint8 tree_probs[GST_VP9_SEG_TREE_PROBS];
/* pred_probs exist or not*/
guint8 update_pred_probs[GST_VP9_PREDICTION_PROBS];
guint8 pred_probs[GST_VP9_PREDICTION_PROBS];
/* abs_delta in setup_segmentation */
guint8 abs_delta;
/* temporal_update in setup_segmentation */
guint8 temporal_update;
/* update_data in setup_segmentation*/
guint8 update_data;
GstVp9SegmentationInfoData data[GST_VP9_MAX_SEGMENTS];
};
/**
* GstVp9FrameHdr:
* @profile: encoded profile
* @show_existing_frame: display already decoded frame instead of doing the decoding
* @frame_to_show: which frame to show if show_existing_frame is true
* @frame_type: frame type
* @show_frame: indicate whether it is a displayable frame or not
* @error_resilient_mode: error resilent mode
* @width: frame width
* @height: frame height
* @display_size_enabled: display size enabled (cropping)
* @display_width: display width
* @display_height: display height
* @frame_context_idx: frame context index
* @intra_only: intra only frame
* @reset_frame_context: reset frame context
* @refresh_frame_flags: refresh reference frame flags
* @ref_frame_indices: reference frame index
* @ref_frame_sign_bias: sign bias for selecting altref,last and golden frames
* @allow_high_precision_mv: allow hight precision motion vector
* @mcomp_filter_type: interpolation filter type
* @refresh_frame_context: refresh frame context indicator
* @frame_parallel_decoding_mode: enable or disable parallel decoding support.
* @loopfilter: loopfilter values
* @quant_indices: quantization indices
* @segmentation: segmentation info
* @log2_tile_rows: tile row indicator
* @log2_tile_columns: tile column indicator
* @first_partition_size: first partition size (after the uncompressed header)
* @lossless_flag: lossless mode decode
* @frame_header_length_in_bytes: length of uncompressed header
*
* Frame header
*
* Since: 1.8
*/
struct _GstVp9FrameHdr
{
guint profile;
guint8 show_existing_frame;
gint frame_to_show;
guint frame_type;
guint8 show_frame;
guint8 error_resilient_mode;
guint32 width;
guint32 height;
guint8 display_size_enabled;
guint32 display_width;
guint32 display_height;
guint frame_context_idx;
guint8 intra_only;
gint reset_frame_context;
gint refresh_frame_flags;
gint ref_frame_indices[GST_VP9_REFS_PER_FRAME];
gint ref_frame_sign_bias[GST_VP9_REFS_PER_FRAME];
gint allow_high_precision_mv;
guint8 mcomp_filter_type;
gint refresh_frame_context;
/* frame_parallel_decoding_mode in vp9 code*/
gint frame_parallel_decoding_mode;
GstVp9LoopFilter loopfilter;
GstVp9QuantIndices quant_indices;
GstVp9SegmentationInfo segmentation;
gint log2_tile_rows;
gint log2_tile_columns;
guint32 first_partition_size;
/* calculated values */
guint lossless_flag;
guint32 frame_header_length_in_bytes;
};
/**
* GstVp9SuperframeInfo:
* @bytes_per_framesize: indicates the number of bytes needed to code each frame size
* @frames_in_superframe: indicates the number of frames within this superframe
* @frame_sizes: specifies the size in bytes of frame number i (zero indexed) within this superframe
* @superframe_index_size: indicates the total size of the superframe_index
*
* Superframe info
*
* Since: 1.18
*/
struct _GstVp9SuperframeInfo {
guint32 bytes_per_framesize;
guint32 frames_in_superframe;
guint32 frame_sizes[GST_VP9_MAX_FRAMES_IN_SUPERFRAME];
guint32 superframe_index_size;
};
/**
* GstVp9Segmentation:
* @filter_level: loop filter level
* @luma_ac_quant_scale: AC quant scale for luma(Y) component
* @luma_dc_quant_scale: DC quant scale for luma(Y) component
* @chroma_ac_quant_scale AC quant scale for chroma(U/V) component
* @chroma_dc_quant_scale: DC quant scale for chroma (U/V) component
* @reference_frame_enabled: alternate reference frame enablement
* @reference_frame: alternate reference frame
* @reference_skip: a block skip mode that implies both the use of a (0,0)
* motion vector and that no residual will be coded
*
* Segmentation info kept across multiple frames
*
* Since: 1.8
*/
struct _GstVp9Segmentation
{
guint8 filter_level[4][2];
gint16 luma_ac_quant_scale;
gint16 luma_dc_quant_scale;
gint16 chroma_ac_quant_scale;
gint16 chroma_dc_quant_scale;
guint8 reference_frame_enabled;
gint reference_frame;
guint8 reference_skip;
};
/**
* GstVp9Parser:
* @priv: GstVp9ParserPrivate struct to keep track of state variables
* @subsampling_x: horizontal subsampling
* @subsampling_y: vertical subsampling
* @bit_depth: bit depth of the stream
* @color_space: color space standard
* @color_range: color range standard
* @mb_segment_tree_probs: decoding tree probabilities
* @segment_pred_probs: segment prediction probabiilties
* @segmentation: Segmentation info
*
* Parser context that needs to be live across frames
*
* Since: 1.8
*/
struct _GstVp9Parser
{
/* private struct for tracking state variables across frames */
void *priv;
gint subsampling_x;
gint subsampling_y;
guint bit_depth;
guint color_space;
guint color_range;
guint8 mb_segment_tree_probs[GST_VP9_SEG_TREE_PROBS];
guint8 segment_pred_probs[GST_VP9_PREDICTION_PROBS];
GstVp9Segmentation segmentation[GST_VP9_MAX_SEGMENTS];
};
GST_CODEC_PARSERS_API
GstVp9Parser * gst_vp9_parser_new (void);
GST_CODEC_PARSERS_API
GstVp9ParserResult gst_vp9_parser_parse_frame_header (GstVp9Parser* parser, GstVp9FrameHdr * frame_hdr, const guint8 * data, gsize size);
GST_CODEC_PARSERS_API
GstVp9ParserResult gst_vp9_parser_parse_superframe_info (GstVp9Parser* parser, GstVp9SuperframeInfo * superframe_info, const guint8 * data, gsize size);
GST_CODEC_PARSERS_API
void gst_vp9_parser_free (GstVp9Parser * parser);
G_END_DECLS
#endif /* GST_VP9_PARSER_H */