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gstreamer/gst-libs/gst/codecparsers/gstmpeg4parser.h

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/*
* GStreamer
* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.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_MPEG4UTIL_H__
#define __GST_MPEG4UTIL_H__
#include <gst/gst.h>
G_BEGIN_DECLS
typedef struct _GstMpeg4VisualObjectSequence GstMpeg4VisualObjectSequence;
typedef struct _GstMpeg4VisualObject GstMpeg4VisualObject;
typedef struct _GstMpeg4VideoObjectLayer GstMpeg4VideoObjectLayer;
typedef struct _GstMpeg4GroupOfVOP GstMpeg4GroupOfVOP;
typedef struct _GstMpeg4VideoObjectPlane GstMpeg4VideoObjectPlane;
typedef struct _GstMpeg4VideoSignalType GstMpeg4VideoSignalType;
typedef struct _GstMpeg4VideoPlaneShortHdr GstMpeg4VideoPlaneShortHdr;
typedef struct _GstMpeg4VideoPacketHdr GstMpeg4VideoPacketHdr;
typedef struct _GstMpeg4SpriteTrajectory GstMpeg4SpriteTrajectory;
typedef struct _GstMpeg4Packet GstMpeg4Packet;
/**
* GstMpeg4StartCode:
*
* Defines the different startcodes present in the bitstream as
* defined in: Table 6-3 — Start code values
*/
typedef enum
{
GST_MPEG4_VIDEO_OBJ_FIRST = 0x00,
GST_MPEG4_VIDEO_OBJ_LAST = 0x1f,
GST_MPEG4_VIDEO_LAYER_FIRST = 0x20,
GST_MPEG4_VIDEO_LAYER_LAST = 0x2f,
GST_MPEG4_VISUAL_OBJ_SEQ_START = 0xb0,
GST_MPEG4_VISUAL_OBJ_SEQ_END = 0xb1,
GST_MPEG4_USER_DATA = 0xb2,
GST_MPEG4_GROUP_OF_VOP = 0xb3,
GST_MPEG4_VIDEO_SESSION_ERR = 0xb4,
GST_MPEG4_VISUAL_OBJ = 0xb5,
GST_MPEG4_VIDEO_OBJ_PLANE = 0xb6,
GST_MPEG4_FBA = 0xba,
GST_MPEG4_FBA_PLAN = 0xbb,
GST_MPEG4_MESH = 0xbc,
GST_MPEG4_MESH_PLAN = 0xbd,
GST_MPEG4_STILL_TEXTURE_OBJ = 0xbe,
GST_MPEG4_TEXTURE_SPATIAL = 0xbf,
GST_MPEG4_TEXTURE_SNR_LAYER = 0xc0,
GST_MPEG4_TEXTURE_TILE = 0xc1,
GST_MPEG4_SHAPE_LAYER = 0xc2,
GST_MPEG4_STUFFING = 0xc3,
GST_MPEG4_SYSTEM_FIRST = 0xc6,
GST_MPEG4_SYSTEM_LAST = 0xff,
GST_MPEG4_RESYNC = 0xfff
} GstMpeg4StartCode;
/**
* GstMpeg4VisualObjectType:
*
* Defines the different visual object types as
* defined in: Table 6-5 -- Meaning of visual object type
*/
typedef enum {
GST_MPEG4_VIDEO_ID = 0x01,
GST_MPEG4_STILL_TEXTURE_ID = 0x02,
GST_MPEG4_STILL_MESH_ID = 0x03,
GST_MPEG4_STILL_FBA_ID = 0x04,
GST_MPEG4_STILL_3D_MESH_ID = 0x05,
/*... reserved */
} GstMpeg4VisualObjectType;
/**
* GstMpeg4AspectRatioInfo:
* @GST_MPEG4_SQUARE: 1:1 square
* @GST_MPEG4_625_TYPE_4_3: 12:11 (625-type for 4:3 picture)
* @GST_MPEG4_525_TYPE_4_3: 10:11 (525-type for 4:3 picture)
* @GST_MPEG4_625_TYPE_16_9: 16:11 (625-type stretched for 16:9 picture)
* @GST_MPEG4_525_TYPE_16_9: 40:33 (525-type stretched for 16:9 picture)
* @GST_MPEG4_EXTENDED_PAR: Extended par
*
* Defines the different pixel aspect ratios as
* defined in: Table 6-12 -- Meaning of pixel aspect ratio
*/
typedef enum {
GST_MPEG4_SQUARE = 0x01,
GST_MPEG4_625_TYPE_4_3 = 0x02,
GST_MPEG4_525_TYPE_4_3 = 0x03,
GST_MPEG4_625_TYPE_16_9 = 0x04,
GST_MPEG4_525_TYPE_16_9 = 0x05,
GST_MPEG4_EXTENDED_PAR = 0x0f,
} GstMpeg4AspectRatioInfo;
/**
* GstMpeg4ParseResult:
* @GST_MPEG4_PARSER_OK: The parsing went well
* @GST_MPEG4_PARSER_BROKEN_DATA: The bitstream was broken
* @GST_MPEG4_PARSER_NO_PACKET: There was no packet in the buffer
* @GST_MPEG4_PARSER_NO_PACKET_END: There was no packet end in the buffer
* @GST_MPEG4_PARSER_NO_PACKET_ERROR: An error accured durint the parsing
*
* Result type of any parsing function.
*/
typedef enum {
GST_MPEG4_PARSER_OK,
GST_MPEG4_PARSER_BROKEN_DATA,
GST_MPEG4_PARSER_NO_PACKET,
GST_MPEG4_PARSER_NO_PACKET_END,
GST_MPEG4_PARSER_ERROR,
} GstMpeg4ParseResult;
/**
* GstMpeg4VideoObjectCodingType:
* @GST_MPEG4_I_VOP: intra-coded (I)
* @GST_MPEG4_P_VOP: predictive-coded (P)
* @GST_MPEG4_B_VOP: bidirectionally-predictive-coded (B)
* @GST_MPEG4_S_VOP: sprite (S)
*
* The vop coding types as defined in:
* Table 6-20 -- Meaning of vop_coding_type
*/
typedef enum {
GST_MPEG4_I_VOP = 0x0,
GST_MPEG4_P_VOP = 0x1,
GST_MPEG4_B_VOP = 0x2,
GST_MPEG4_S_VOP = 0x3
} GstMpeg4VideoObjectCodingType;
/**
* GstMpeg4ChromaFormat:
*
* The chroma format in use as
* defined in: Table 6-13 -- Meaning of chroma_format
*/
typedef enum {
/* Other value are reserved */
GST_MPEG4_CHROMA_4_2_0 = 0x01
} GstMpeg4ChromaFormat;
/**
* GstMpeg4VideoObjectLayerShape:
*
* The different video object layer shapes as defined in:
* Table 6-16 — Video Object Layer shape type
*/
typedef enum {
GST_MPEG4_RECTANGULAR,
GST_MPEG4_BINARY,
GST_MPEG4_BINARY_ONLY,
GST_MPEG4_GRAYSCALE
} GstMpeg4VideoObjectLayerShape;
/**
* GstMpeg4SpriteEnable:
*
* Indicates the usage of static sprite coding
* or global motion compensation (GMC) as defined in:
* Table V2 - 2 -- Meaning of sprite_enable codewords
*/
typedef enum {
GST_MPEG4_SPRITE_UNUSED,
GST_MPEG4_SPRITE_STATIC,
GST_MPEG4_SPRITE_GMG
} GstMpeg4SpriteEnable;
/**
* GstMpeg4Profile:
*
* Different defined profiles as defined in:
* 9- Profiles and levels
*
* It is computed using:
* Table G.1 — FLC table for profile_and_level_indication
*/
typedef enum {
GST_MPEG4_PROFILE_CORE,
GST_MPEG4_PROFILE_MAIN,
GST_MPEG4_PROFILE_N_BIT,
GST_MPEG4_PROFILE_SIMPLE,
GST_MPEG4_PROFILE_HYBRID,
GST_MPEG4_PROFILE_RESERVED,
GST_MPEG4_PROFILE_SIMPLE_FBA,
GST_MPEG4_PROFILE_CORE_STUDIO,
GST_MPEG4_PROFILE_SIMPLE_STUDIO,
GST_MPEG4_PROFILE_CORE_SCALABLE,
GST_MPEG4_PROFILE_ADVANCED_CORE,
GST_MPEG4_PROFILE_ADVANCED_SIMPLE,
GST_MPEG4_PROFILE_SIMPLE_SCALABLE,
GST_MPEG4_PROFILE_SCALABLE_TEXTURE,
GST_MPEG4_PROFILE_SIMPLE_FACE_ANIMATION,
GST_MPEG4_PROFILE_BASIC_ANIMATED_TEXTURE,
GST_MPEG4_PROFILE_ADVANCED_REALTIME_SIMPLE,
GST_MPEG4_PROFILE_ADVANCED_SCALABLE_TEXTURE,
GST_MPEG4_PROFILE_FINE_GRANULARITY_SCALABLE,
GST_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY
} GstMpeg4Profile;
/**
* GstMpeg4Level:
*
* Different levels as defined in:
* 9- Profiles and levels
*
* It is computed using:
* Table G.1 — FLC table for profile_and_level_indication
*/
typedef enum {
GST_MPEG4_LEVEL0,
GST_MPEG4_LEVEL1,
GST_MPEG4_LEVEL2,
GST_MPEG4_LEVEL3,
GST_MPEG4_LEVEL3b,
GST_MPEG4_LEVEL4,
GST_MPEG4_LEVEL5,
GST_MPEG4_LEVEL_RESERVED
} GstMpeg4Level;
/**
* GstMpeg4VisualObjectSequence:
*
* The visual object sequence structure as defined in:
* 6.2.2 Visual Object Sequence and Visual Object
*/
struct _GstMpeg4VisualObjectSequence {
guint8 profile_and_level_indication;
/* Computed according to:
* Table G.1 — FLC table for profile_and_level_indication */
GstMpeg4Level level;
GstMpeg4Profile profile;
};
/**
* GstMpeg4VisualObject:
*
* The visual object structure as defined in:
* 6.2.2 Visual Object Sequence and Visual Object
*/
struct _GstMpeg4VisualObject {
guint8 is_identifier;
/* If is_identifier */
guint8 verid;
guint8 priority;
GstMpeg4VisualObjectType type;
};
/**
* GstMpeg4VideoSignalType:
*
* The video signal type structure as defined in:
* 6.2.2 Visual Object Sequence and Visual Object.
*/
struct _GstMpeg4VideoSignalType {
guint8 type;
guint8 format;
guint8 range;
guint8 color_description;
guint8 color_primaries;
guint8 transfer_characteristics;
guint8 matrix_coefficients;
};
/**
* GstMpeg4VideoPlaneShortHdr:
*
* The video plane short header structure as defined in:
* 6.2.5.2 Video Plane with Short Header
*/
struct _GstMpeg4VideoPlaneShortHdr {
guint8 temporal_reference;
guint8 split_screen_indicator;
guint8 document_camera_indicator;
guint8 full_picture_freeze_release;
guint8 source_format;
guint8 picture_coding_type;
guint8 vop_quant;
guint8 pei;
guint8 psupp;
/* Gob layer specific fields */
guint8 gob_header_empty;
guint8 gob_number;
guint8 gob_frame_id;
guint8 quant_scale;
/* Computed
* If all the values are set to 0, then it is reserved
* Table 6-25 -- Parameters Defined by source_format Field
*/
guint16 vop_width;
guint16 vop_height;
guint16 num_macroblocks_in_gob;
guint8 num_gobs_in_vop;
/* The size in bits */
guint size;
};
/**
* GstMpeg4VideoObjectLayer:
*
* The video object layer structure as defined in:
* 6.2.3 Video Object Layer
*/
struct _GstMpeg4VideoObjectLayer {
guint8 random_accessible_vol;
guint8 video_object_type_indication;
guint8 is_object_layer_identifier;
/* if is_object_layer_identifier */
guint8 verid;
guint8 priority;
GstMpeg4AspectRatioInfo aspect_ratio_info;
guint8 par_width;
guint8 par_height;
guint8 control_parameters;
/* if control_parameters */
GstMpeg4ChromaFormat chroma_format;
guint8 low_delay;
guint8 vbv_parameters;
/* if vbv_parameters */
guint16 first_half_bitrate;
guint16 latter_half_bitrate;
guint16 first_half_vbv_buffer_size;
guint16 latter_half_vbv_buffer_size;
guint16 first_half_vbv_occupancy;
guint16 latter_half_vbv_occupancy;
/* Computed values */
guint32 bit_rate;
guint32 vbv_buffer_size;
GstMpeg4VideoObjectLayerShape shape;
/* if shape == GST_MPEG4_GRAYSCALE && verid =! 1 */
guint8 shape_extension;
guint16 vop_time_increment_resolution;
guint8 vop_time_increment_bits;
guint8 fixed_vop_rate;
/* if fixed_vop_rate */
guint16 fixed_vop_time_increment;
guint16 width;
guint16 height;
guint8 interlaced;
guint8 obmc_disable;
GstMpeg4SpriteEnable sprite_enable;
/* if vol->sprite_enable == SPRITE_GMG or SPRITE_STATIC*/
/* if vol->sprite_enable != GST_MPEG4_SPRITE_GMG */
guint16 sprite_width;
guint16 sprite_height;
guint16 sprite_left_coordinate;
guint16 sprite_top_coordinate;
guint8 no_of_sprite_warping_points;
guint8 sprite_warping_accuracy;
guint8 sprite_brightness_change;
/* if vol->sprite_enable != GST_MPEG4_SPRITE_GMG */
guint8 low_latency_sprite_enable;
/* if shape != GST_MPEG4_RECTANGULAR */
guint8 sadct_disable;
guint8 not_8_bit;
/* if no_8_bit */
guint8 quant_precision;
guint8 bits_per_pixel;
/* if shape == GRAYSCALE */
guint8 no_gray_quant_update;
guint8 composition_method;
guint8 linear_composition;
guint8 quant_type;
/* if quant_type */
guint8 load_intra_quant_mat;
guint8 intra_quant_mat[64];
guint8 load_non_intra_quant_mat;
guint8 non_intra_quant_mat[64];
guint8 quarter_sample;
guint8 complexity_estimation_disable;
guint8 resync_marker_disable;
guint8 data_partitioned;
guint8 reversible_vlc;
guint8 newpred_enable;
guint8 reduced_resolution_vop_enable;
guint8 scalability;
guint8 enhancement_type;
GstMpeg4VideoPlaneShortHdr short_hdr;
};
/**
* GstMpeg4SpriteTrajectory:
*
* The sprite trajectory structure as defined in:
* 7.8.4 Sprite reference point decoding and
* 6.2.5.4 Sprite coding
*/
struct _GstMpeg4SpriteTrajectory {
guint16 vop_ref_points[63]; /* Defined as "du" in 6.2.5.4 */
guint16 sprite_ref_points[63]; /* Defined as "dv" in 6.2.5.4 */
};
/**
* GstMpeg4GroupOfVOP:
*
* The group of video object plane structure as defined in:
* 6.2.4 Group of Video Object Plane
*/
struct _GstMpeg4GroupOfVOP {
guint8 hours;
guint8 minutes;
guint8 seconds;
guint8 closed;
guint8 broken_link;
};
/**
* GstMpeg4VideoObjectPlane:
*
* The Video object plane structure as defined in:
* 6.2.5 Video Object Plane and Video Plane with Short Header
*/
struct _GstMpeg4VideoObjectPlane {
GstMpeg4VideoObjectCodingType coding_type;
guint8 modulo_time_base;
guint16 time_increment;
guint8 coded;
/* if newpred_enable */
guint16 id;
guint8 id_for_prediction_indication;
guint16 id_for_prediction;
guint16 width;
guint16 height;
guint16 horizontal_mc_spatial_ref;
guint16 vertical_mc_spatial_ref;
guint8 rounding_type;
/*if vol->shape != GST_MPEG4_RECTANGULAR */
guint8 background_composition;
guint8 change_conv_ratio_disable;
guint8 constant_alpha;
guint8 constant_alpha_value;
guint8 reduced_resolution;
guint8 intra_dc_vlc_thr;
guint8 top_field_first;
guint8 alternate_vertical_scan_flag;
guint16 quant;
guint8 fcode_forward;
guint8 fcode_backward;
guint8 shape_coding_type;
guint8 load_backward_shape;
guint8 ref_select_code;
/* Computed macroblock informations */
guint16 mb_height;
guint16 mb_width;
guint mb_num;
/* The size of the header */
guint size;
};
/**
* GstMpeg4VideoPacketHdr:
* @size: Size of the header in bit.
*
* The video packet header structure as defined in:
* 6.2.5.2 Video Plane with Short Header
*/
struct _GstMpeg4VideoPacketHdr {
guint8 header_extension_code;
guint16 macroblock_number;
guint16 quant_scale;
guint size;
};
/**
* GstMpeg4Packet:
* @type: the type of the packet that start at @offset
* @data: the data containing packet starting at @offset
* @offset: offset of the start of the packet (without the 3 bytes startcode), but
* including the #GstMpeg4StartCode byte.
* @size: The size in bytes of the packet or %G_MAXUINT if the end wasn't found.
* @marker_size: The size in bit of the resync marker.
*
* A structure that contains the type of a packet, its offset and its size
*/
struct _GstMpeg4Packet
{
const guint8 *data;
guint offset;
gsize size;
guint marker_size;
GstMpeg4StartCode type;
};
GST_EXPORT
GstMpeg4ParseResult gst_h263_parse (GstMpeg4Packet * packet,
const guint8 * data, guint offset,
gsize size);
GST_EXPORT
GstMpeg4ParseResult gst_mpeg4_parse (GstMpeg4Packet * packet,
gboolean skip_user_data,
GstMpeg4VideoObjectPlane *vop,
const guint8 * data, guint offset,
gsize size);
GST_EXPORT
GstMpeg4ParseResult
gst_mpeg4_parse_video_object_plane (GstMpeg4VideoObjectPlane *vop,
GstMpeg4SpriteTrajectory *sprite_trajectory,
GstMpeg4VideoObjectLayer *vol,
const guint8 * data,
gsize size);
GST_EXPORT
GstMpeg4ParseResult
gst_mpeg4_parse_group_of_vop (GstMpeg4GroupOfVOP *gov,
const guint8 * data, gsize size);
GST_EXPORT
GstMpeg4ParseResult
gst_mpeg4_parse_video_object_layer (GstMpeg4VideoObjectLayer *vol,
GstMpeg4VisualObject *vo,
const guint8 * data, gsize size);
GST_EXPORT
GstMpeg4ParseResult
gst_mpeg4_parse_visual_object (GstMpeg4VisualObject *vo,
GstMpeg4VideoSignalType *signal_type,
const guint8 * data, gsize size);
GST_EXPORT
GstMpeg4ParseResult
gst_mpeg4_parse_visual_object_sequence (GstMpeg4VisualObjectSequence *vos,
const guint8 * data, gsize size);
GST_EXPORT
GstMpeg4ParseResult
gst_mpeg4_parse_video_plane_short_header (GstMpeg4VideoPlaneShortHdr * shorthdr,
const guint8 * data, gsize size);
GST_EXPORT
GstMpeg4ParseResult
gst_mpeg4_parse_video_packet_header (GstMpeg4VideoPacketHdr * videopackethdr,
GstMpeg4VideoObjectLayer * vol,
GstMpeg4VideoObjectPlane * vop,
GstMpeg4SpriteTrajectory * sprite_trajectory,
const guint8 * data, gsize size);
G_END_DECLS
#endif /* __GST_MPEG4UTIL_H__ */
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