xine-lib 1.2.13-20230125hg15249
Functions | Variables
header.c File Reference
#include "config.h"
#include <stdio.h>
#include <inttypes.h>
#include "mpeg2_internal.h"
#include <xine/attributes.h>

Functions

static uint32_t get_bits (uint8_t *buffer, uint32_t count, uint32_t *bit_position)
 
static int32_t get_bits_signed (uint8_t *buffer, uint32_t count, uint32_t *bit_position)
 
void mpeg2_header_state_init (picture_t *picture)
 
int mpeg2_header_sequence (picture_t *picture, uint8_t *buffer)
 
static int sequence_extension (picture_t *picture, uint8_t *buffer)
 
static int quant_matrix_extension (picture_t *picture, uint8_t *buffer)
 
static int picture_coding_extension (picture_t *picture, uint8_t *buffer)
 
static int sequence_display_extension (picture_t *picture, uint8_t *buffer)
 
static int picture_display_extension (picture_t *picture, uint8_t *buffer)
 
int mpeg2_header_extension (picture_t *picture, uint8_t *buffer)
 
int mpeg2_header_group_of_pictures (picture_t *picture, uint8_t *buffer)
 
int mpeg2_header_picture (picture_t *picture, uint8_t *buffer)
 

Variables

static const uint8_t default_intra_quantizer_matrix [64]
 
uint8_t mpeg2_scan_norm [64]
 
uint8_t mpeg2_scan_alt [64]
 

Function Documentation

◆ get_bits()

static uint32_t get_bits ( uint8_t * buffer,
uint32_t count,
uint32_t * bit_position )
static

◆ get_bits_signed()

static int32_t get_bits_signed ( uint8_t * buffer,
uint32_t count,
uint32_t * bit_position )
static

References get_bits().

Referenced by picture_display_extension().

◆ mpeg2_header_extension()

int mpeg2_header_extension ( picture_t * picture,
uint8_t * buffer )

◆ mpeg2_header_group_of_pictures()

int mpeg2_header_group_of_pictures ( picture_t * picture,
uint8_t * buffer )

References get_bits().

Referenced by parse_chunk().

◆ mpeg2_header_picture()

int mpeg2_header_picture ( picture_t * picture,
uint8_t * buffer )

References FRAME_PICTURE.

Referenced by mpeg2_parse_header(), and parse_chunk().

◆ mpeg2_header_sequence()

int mpeg2_header_sequence ( picture_t * picture,
uint8_t * buffer )

◆ mpeg2_header_state_init()

void mpeg2_header_state_init ( picture_t * picture)

◆ picture_coding_extension()

static int picture_coding_extension ( picture_t * picture,
uint8_t * buffer )
static

◆ picture_display_extension()

static int picture_display_extension ( picture_t * picture,
uint8_t * buffer )
static

References get_bits_signed().

Referenced by mpeg2_header_extension().

◆ quant_matrix_extension()

static int quant_matrix_extension ( picture_t * picture,
uint8_t * buffer )
static

References mpeg2_scan_norm.

Referenced by mpeg2_header_extension().

◆ sequence_display_extension()

static int sequence_display_extension ( picture_t * picture,
uint8_t * buffer )
static

References get_bits().

Referenced by mpeg2_header_extension().

◆ sequence_extension()

static int sequence_extension ( picture_t * picture,
uint8_t * buffer )
static

Referenced by mpeg2_header_extension().

Variable Documentation

◆ default_intra_quantizer_matrix

const uint8_t default_intra_quantizer_matrix[64]
static
Initial value:
= {
8,
16, 16,
19, 16, 19,
22, 22, 22, 22,
22, 22, 26, 24, 26,
27, 27, 27, 26, 26, 26,
26, 27, 27, 27, 29, 29, 29,
34, 34, 34, 29, 29, 29, 27, 27,
29, 29, 32, 32, 34, 34, 37,
38, 37, 35, 35, 34, 35,
38, 38, 40, 40, 40,
48, 48, 46, 46,
56, 56, 58,
69, 69,
83
}

Referenced by mpeg2_header_sequence(), and mpeg2_header_sequence().

◆ mpeg2_scan_alt

uint8_t mpeg2_scan_alt[64]
Initial value:
=
{
0,8,16,24,1,9,2,10,17,25,32,40,48,56,57,49,
41,33,26,18,3,11,4,12,19,27,34,42,50,58,35,43,
51,59,20,28,5,13,6,14,21,29,36,44,52,60,37,45,
53,61,22,30,7,15,23,31,38,46,54,62,39,47,55,63
}

Referenced by mpeg2_idct_init(), mpeg2_init(), mpeg2_xxmc_slice(), picture_coding_ext(), picture_coding_extension(), and xvmc_setup_scan_ptable().

◆ mpeg2_scan_norm

uint8_t mpeg2_scan_norm[64]
Initial value:
=
{
0, 1, 8,16, 9, 2, 3,10,
17,24,32,25,18,11, 4, 5,
12,19,26,33,40,48,41,34,
27,20,13, 6, 7,14,21,28,
35,42,49,56,57,50,43,36,
29,22,15,23,30,37,44,51,
58,59,52,45,38,31,39,46,
53,60,61,54,47,55,62,63
}

Referenced by get_xvmc_intra_block_B14(), get_xvmc_intra_block_B15(), get_xvmc_mpeg1_intra_block(), get_xvmc_mpeg1_non_intra_block(), get_xvmc_non_intra_block(), mpeg2_header_picture(), mpeg2_header_sequence(), mpeg2_header_sequence(), mpeg2_header_state_init(), mpeg2_idct_init(), mpeg2_init(), picture_coding_ext(), picture_coding_extension(), quant_matrix_ext(), quant_matrix_extension(), and xvmc_setup_scan_ptable().