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/*
* mpeg2.h
* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
*
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
* See http://libmpeg2.sourceforge.net/ for updates.
*
* mpeg2dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpeg2dec 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef MPEG2_H
#define MPEG2_H
#define MPEG2_VERSION(a,b,c) (((a)<<16)|((b)<<8)|(c))
#define MPEG2_RELEASE MPEG2_VERSION (0, 4, 0) /* 0.4.0 */
#define SEQ_FLAG_MPEG2 1
#define SEQ_FLAG_CONSTRAINED_PARAMETERS 2
#define SEQ_FLAG_PROGRESSIVE_SEQUENCE 4
#define SEQ_FLAG_LOW_DELAY 8
#define SEQ_FLAG_COLOUR_DESCRIPTION 16
#define SEQ_MASK_VIDEO_FORMAT 0xe0
#define SEQ_VIDEO_FORMAT_COMPONENT 0
#define SEQ_VIDEO_FORMAT_PAL 0x20
#define SEQ_VIDEO_FORMAT_NTSC 0x40
#define SEQ_VIDEO_FORMAT_SECAM 0x60
#define SEQ_VIDEO_FORMAT_MAC 0x80
#define SEQ_VIDEO_FORMAT_UNSPECIFIED 0xa0
typedef struct mpeg2_sequence_s {
unsigned int width, height;
unsigned int chroma_width, chroma_height;
unsigned int byte_rate;
unsigned int vbv_buffer_size;
uint32_t flags;
unsigned int picture_width, picture_height;
unsigned int display_width, display_height;
unsigned int pixel_width, pixel_height;
unsigned int frame_period;
uint8_t profile_level_id;
uint8_t colour_primaries;
uint8_t transfer_characteristics;
uint8_t matrix_coefficients;
} mpeg2_sequence_t;
#define GOP_FLAG_DROP_FRAME 1
#define GOP_FLAG_BROKEN_LINK 2
#define GOP_FLAG_CLOSED_GOP 4
typedef struct mpeg2_gop_s {
uint8_t hours;
uint8_t minutes;
uint8_t seconds;
uint8_t pictures;
uint32_t flags;
} mpeg2_gop_t;
#define PIC_MASK_CODING_TYPE 7
#define PIC_FLAG_CODING_TYPE_I 1
#define PIC_FLAG_CODING_TYPE_P 2
#define PIC_FLAG_CODING_TYPE_B 3
#define PIC_FLAG_CODING_TYPE_D 4
#define PIC_FLAG_TOP_FIELD_FIRST 8
#define PIC_FLAG_PROGRESSIVE_FRAME 16
#define PIC_FLAG_COMPOSITE_DISPLAY 32
#define PIC_FLAG_SKIP 64
#define PIC_FLAG_TAGS 128
#define PIC_MASK_COMPOSITE_DISPLAY 0xfffff000
typedef struct mpeg2_picture_s {
unsigned int temporal_reference;
unsigned int nb_fields;
uint32_t tag, tag2;
uint32_t flags;
struct {
int x, y;
} display_offset[3];
} mpeg2_picture_t;
typedef struct mpeg2_fbuf_s {
uint8_t * buf[3];
void * id;
} mpeg2_fbuf_t;
typedef struct mpeg2_info_s {
const mpeg2_sequence_t * sequence;
const mpeg2_gop_t * gop;
const mpeg2_picture_t * current_picture;
const mpeg2_picture_t * current_picture_2nd;
const mpeg2_fbuf_t * current_fbuf;
const mpeg2_picture_t * display_picture;
const mpeg2_picture_t * display_picture_2nd;
const mpeg2_fbuf_t * display_fbuf;
const mpeg2_fbuf_t * discard_fbuf;
const uint8_t * user_data;
unsigned int user_data_len;
} mpeg2_info_t;
typedef struct mpeg2dec_s mpeg2dec_t;
typedef struct mpeg2_decoder_s mpeg2_decoder_t;
typedef enum {
STATE_BUFFER = 0,
STATE_SEQUENCE = 1,
STATE_SEQUENCE_REPEATED = 2,
STATE_GOP = 3,
STATE_PICTURE = 4,
STATE_SLICE_1ST = 5,
STATE_PICTURE_2ND = 6,
STATE_SLICE = 7,
STATE_END = 8,
STATE_INVALID = 9,
STATE_INVALID_END = 10
} mpeg2_state_t;
typedef struct mpeg2_convert_init_s {
unsigned int id_size;
unsigned int buf_size[3];
void (* start) (void * id, const mpeg2_fbuf_t * fbuf,
const mpeg2_picture_t * picture, const mpeg2_gop_t * gop);
void (* copy) (void * id, uint8_t * const * src, unsigned int v_offset);
} mpeg2_convert_init_t;
typedef enum {
MPEG2_CONVERT_SET = 0,
MPEG2_CONVERT_STRIDE = 1,
MPEG2_CONVERT_START = 2
} mpeg2_convert_stage_t;
typedef int mpeg2_convert_t (int stage, void * id,
const mpeg2_sequence_t * sequence, int stride,
void * arg, mpeg2_convert_init_t * result);
int mpeg2_convert (mpeg2dec_t * mpeg2dec, mpeg2_convert_t convert, void * arg);
int mpeg2_stride (mpeg2dec_t * mpeg2dec, int stride);
void mpeg2_set_buf (mpeg2dec_t * mpeg2dec, uint8_t * buf[3], void * id);
void mpeg2_custom_fbuf (mpeg2dec_t * mpeg2dec, int custom_fbuf);
mpeg2dec_t * mpeg2_init (void);
const mpeg2_info_t * mpeg2_info (mpeg2dec_t * mpeg2dec);
void mpeg2_close (mpeg2dec_t * mpeg2dec);
void mpeg2_buffer (mpeg2dec_t * mpeg2dec, uint8_t * start, uint8_t * end);
int mpeg2_getpos (mpeg2dec_t * mpeg2dec);
mpeg2_state_t mpeg2_parse (mpeg2dec_t * mpeg2dec);
void mpeg2_reset (mpeg2dec_t * mpeg2dec, int full_reset);
void mpeg2_skip (mpeg2dec_t * mpeg2dec, int skip);
void mpeg2_slice_region (mpeg2dec_t * mpeg2dec, int start, int end);
void mpeg2_tag_picture (mpeg2dec_t * mpeg2dec, uint32_t tag, uint32_t tag2);
void mpeg2_init_fbuf (mpeg2_decoder_t * decoder, uint8_t * current_fbuf[3],
uint8_t * forward_fbuf[3], uint8_t * backward_fbuf[3]);
void mpeg2_slice (mpeg2_decoder_t * decoder, int code, const uint8_t * buffer);
typedef enum {
MPEG2_ALLOC_MPEG2DEC = 0,
MPEG2_ALLOC_CHUNK = 1,
MPEG2_ALLOC_YUV = 2,
MPEG2_ALLOC_CONVERT_ID = 3,
MPEG2_ALLOC_CONVERTED = 4
} mpeg2_alloc_t;
void * mpeg2_malloc (unsigned size, mpeg2_alloc_t reason);
void mpeg2_free (void * buf);
void mpeg2_alloc_init(unsigned char* buf, int mallocsize);
#endif /* MPEG2_H */
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