FFmpeg
Variables
mpegvideodata.c File Reference
#include <stdint.h>

Go to the source code of this file.

Variables

const uint8_t ff_default_chroma_qscale_table [32]
 
const uint8_t ff_mpeg2_non_linear_qscale [32]
 
const uint8_t ff_mpeg12_dc_scale_table [4][32]
 
const uint8_t ff_alternate_horizontal_scan [64]
 
const uint8_t ff_alternate_vertical_scan [64]
 

Variable Documentation

◆ ff_default_chroma_qscale_table

const uint8_t ff_default_chroma_qscale_table[32]
Initial value:
= {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
}

Definition at line 21 of file mpegvideodata.c.

Referenced by ff_mpv_common_defaults().

◆ ff_mpeg2_non_linear_qscale

const uint8_t ff_mpeg2_non_linear_qscale[32]
Initial value:
= {
0, 1, 2, 3, 4, 5, 6, 7,
8, 10, 12, 14, 16, 18, 20, 22,
24, 28, 32, 36, 40, 44, 48, 52,
56, 64, 72, 80, 88, 96, 104, 112,
}

Definition at line 26 of file mpegvideodata.c.

Referenced by dct_quantize_trellis_c(), dct_unquantize_mpeg2_inter_c(), dct_unquantize_mpeg2_intra_bitexact(), dct_unquantize_mpeg2_intra_c(), ff_convert_matrix(), mpeg_get_qscale(), and update_qscale().

◆ ff_mpeg12_dc_scale_table

const uint8_t ff_mpeg12_dc_scale_table[4][32]
Initial value:
= {
{
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
},
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
},
{
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
},
{
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
},
}

Definition at line 33 of file mpegvideodata.c.

Referenced by encode_picture(), and ff_speedhq_encode_init().

◆ ff_alternate_horizontal_scan

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

Definition at line 52 of file mpegvideodata.c.

Referenced by decode_studio_vop_header(), decode_vop_header(), and ff_mpv_idct_init().

◆ ff_alternate_vertical_scan

const uint8_t ff_alternate_vertical_scan[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,
}

Definition at line 63 of file mpegvideodata.c.

Referenced by decode_studio_vop_header(), decode_vop_header(), ff_mpv_idct_init(), ipu_decode_frame(), and mpeg_decode_picture_coding_extension().