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