FFmpeg: libavcodec/mpegutils.h File Reference

void ff_draw_horiz_band (AVCodecContext *avctx, const AVFrame *cur, const AVFrame *last, int y, int h, int picture_structure, int first_field, int low_delay)

Draw a horizontal band if supported. More...

void ff_print_debug_info2 (AVCodecContext *avctx, AVFrame *pict, const uint32_t *mbtype_table, const int8_t *qscale_table, int16_t(*const motion_val[2])[2], int mb_width, int mb_height, int mb_stride, int quarter_sample)

Print debugging info for the given picture. More...

Macro Definition Documentation

◆ PICT_TOP_FIELD

#define PICT_TOP_FIELD 1

Definition at line 31 of file mpegutils.h.

◆ PICT_BOTTOM_FIELD

#define PICT_BOTTOM_FIELD 2

Definition at line 32 of file mpegutils.h.

◆ PICT_FRAME

#define PICT_FRAME 3

Definition at line 33 of file mpegutils.h.

◆ MAX_MB_BYTES

#define MAX_MB_BYTES (30 * 16 * 16 * 3 / 8 + 120)

Definition at line 35 of file mpegutils.h.

◆ MAX_FCODE

#define MAX_FCODE 7

Definition at line 36 of file mpegutils.h.

◆ MB_TYPE_INTRA4x4

#define MB_TYPE_INTRA4x4 (1 << 0)

Definition at line 39 of file mpegutils.h.

◆ MB_TYPE_INTRA16x16

#define MB_TYPE_INTRA16x16 (1 << 1)

Definition at line 40 of file mpegutils.h.

◆ MB_TYPE_INTRA_PCM

#define MB_TYPE_INTRA_PCM (1 << 2)

Definition at line 41 of file mpegutils.h.

◆ MB_TYPE_16x16

#define MB_TYPE_16x16 (1 << 3)

Definition at line 42 of file mpegutils.h.

◆ MB_TYPE_16x8

#define MB_TYPE_16x8 (1 << 4)

Definition at line 43 of file mpegutils.h.

◆ MB_TYPE_8x16

#define MB_TYPE_8x16 (1 << 5)

Definition at line 44 of file mpegutils.h.

◆ MB_TYPE_8x8

#define MB_TYPE_8x8 (1 << 6)

Definition at line 45 of file mpegutils.h.

◆ MB_TYPE_INTERLACED

#define MB_TYPE_INTERLACED (1 << 7)

Definition at line 46 of file mpegutils.h.

◆ MB_TYPE_DIRECT2

#define MB_TYPE_DIRECT2 (1 << 8)

Definition at line 47 of file mpegutils.h.

◆ MB_TYPE_CBP

#define MB_TYPE_CBP (1 << 10)

Definition at line 48 of file mpegutils.h.

◆ MB_TYPE_QUANT

#define MB_TYPE_QUANT (1 << 11)

Definition at line 49 of file mpegutils.h.

◆ MB_TYPE_FORWARD_MV

#define MB_TYPE_FORWARD_MV (1 << 12)

Definition at line 50 of file mpegutils.h.

◆ MB_TYPE_BACKWARD_MV

#define MB_TYPE_BACKWARD_MV (1 << 13)

Definition at line 51 of file mpegutils.h.

◆ MB_TYPE_BIDIR_MV

#define MB_TYPE_BIDIR_MV (MB_TYPE_FORWARD_MV | MB_TYPE_BACKWARD_MV)

Definition at line 52 of file mpegutils.h.

◆ MB_TYPE_P0L0

#define MB_TYPE_P0L0 (1 << 12)

Definition at line 54 of file mpegutils.h.

◆ MB_TYPE_P1L0

#define MB_TYPE_P1L0 (1 << 13)

Definition at line 55 of file mpegutils.h.

◆ MB_TYPE_P0L1

#define MB_TYPE_P0L1 (1 << 14)

Definition at line 56 of file mpegutils.h.

◆ MB_TYPE_P1L1

#define MB_TYPE_P1L1 (1 << 15)

Definition at line 57 of file mpegutils.h.

◆ MB_TYPE_L0

#define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)

Definition at line 58 of file mpegutils.h.

◆ MB_TYPE_L1

#define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)

Definition at line 59 of file mpegutils.h.

◆ MB_TYPE_L0L1

#define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)

Definition at line 60 of file mpegutils.h.

◆ MB_TYPE_GMC

#define MB_TYPE_GMC (1 << 16)

Definition at line 61 of file mpegutils.h.

◆ MB_TYPE_SKIP

#define MB_TYPE_SKIP (1 << 17)

Definition at line 62 of file mpegutils.h.

◆ MB_TYPE_ACPRED

#define MB_TYPE_ACPRED (1 << 18)

Definition at line 63 of file mpegutils.h.

◆ MB_TYPE_INTRA

#define MB_TYPE_INTRA MB_TYPE_INTRA4x4

Definition at line 65 of file mpegutils.h.

◆ MB_TYPE_CODEC_SPECIFIC

#define MB_TYPE_CODEC_SPECIFIC (1 << 9)

Definition at line 68 of file mpegutils.h.

◆ IS_INTRA4x4

#define IS_INTRA4x4 ( a ) ((a) & MB_TYPE_INTRA4x4)

Definition at line 70 of file mpegutils.h.

◆ IS_INTRA16x16

#define IS_INTRA16x16 ( a ) ((a) & MB_TYPE_INTRA16x16)

Definition at line 71 of file mpegutils.h.

◆ IS_PCM

#define IS_PCM ( a ) ((a) & MB_TYPE_INTRA_PCM)

Definition at line 72 of file mpegutils.h.

◆ IS_INTRA

#define IS_INTRA ( a ) ((a) & 7)

Definition at line 73 of file mpegutils.h.

◆ IS_INTER

#define IS_INTER ( a )

Value:

((a) & (MB_TYPE_16x16 | MB_TYPE_16x8 | \

MB_TYPE_8x16 | MB_TYPE_8x8))

Definition at line 74 of file mpegutils.h.

◆ IS_SKIP

#define IS_SKIP ( a ) ((a) & MB_TYPE_SKIP)

Definition at line 76 of file mpegutils.h.

◆ IS_INTRA_PCM

#define IS_INTRA_PCM ( a ) ((a) & MB_TYPE_INTRA_PCM)

Definition at line 77 of file mpegutils.h.

◆ IS_INTERLACED

#define IS_INTERLACED ( a ) ((a) & MB_TYPE_INTERLACED)

Definition at line 78 of file mpegutils.h.

◆ IS_DIRECT

#define IS_DIRECT ( a ) ((a) & MB_TYPE_DIRECT2)

Definition at line 79 of file mpegutils.h.

◆ IS_GMC

#define IS_GMC ( a ) ((a) & MB_TYPE_GMC)

Definition at line 80 of file mpegutils.h.

◆ IS_16X16

#define IS_16X16 ( a ) ((a) & MB_TYPE_16x16)

Definition at line 81 of file mpegutils.h.

◆ IS_16X8

#define IS_16X8 ( a ) ((a) & MB_TYPE_16x8)

Definition at line 82 of file mpegutils.h.

◆ IS_8X16

#define IS_8X16 ( a ) ((a) & MB_TYPE_8x16)

Definition at line 83 of file mpegutils.h.

◆ IS_8X8

#define IS_8X8 ( a ) ((a) & MB_TYPE_8x8)

Definition at line 84 of file mpegutils.h.

◆ IS_ACPRED

#define IS_ACPRED ( a ) ((a) & MB_TYPE_ACPRED)

Definition at line 85 of file mpegutils.h.

◆ IS_QUANT

#define IS_QUANT ( a ) ((a) & MB_TYPE_QUANT)

Definition at line 86 of file mpegutils.h.

◆ HAS_CBP

#define HAS_CBP ( a ) ((a) & MB_TYPE_CBP)

Definition at line 88 of file mpegutils.h.

◆ HAS_FORWARD_MV

#define HAS_FORWARD_MV ( a ) ((a) & MB_TYPE_FORWARD_MV)

Definition at line 89 of file mpegutils.h.

◆ HAS_BACKWARD_MV

#define HAS_BACKWARD_MV ( a ) ((a) & MB_TYPE_BACKWARD_MV)

Definition at line 90 of file mpegutils.h.

◆ HAS_MV

#define HAS_MV ( a,

dir

) ((a) & (MB_TYPE_FORWARD_MV << (dir)))

Definition at line 92 of file mpegutils.h.

◆ MB_TYPE_MV_2_MV_DIR

#define MB_TYPE_MV_2_MV_DIR ( a ) (((a) >> 12) & (MV_DIR_FORWARD | MV_DIR_BACKWARD))

Definition at line 94 of file mpegutils.h.

Function Documentation

◆ ff_draw_horiz_band()

void ff_draw_horiz_band ( AVCodecContext * avctx,

const AVFrame * cur,

const AVFrame * last,

int y,

int h,

int picture_structure,

int first_field,

int low_delay

)

Draw a horizontal band if supported.

Parameters: h is the normal height, this will be reduced automatically if needed

Definition at line 54 of file mpegutils.c.

Referenced by ff_intrax8_decode_picture(), ff_mpeg_draw_horiz_band(), and svq3_decode_frame().

◆ ff_print_debug_info2()

void ff_print_debug_info2 ( AVCodecContext * avctx,

AVFrame * pict,

const uint32_t * mbtype_table,

const int8_t * qscale_table,

int16_t(*[2]) motion_val[2],

int mb_width,

int mb_height,

int mb_stride,

int quarter_sample

)

Print debugging info for the given picture.

Definition at line 155 of file mpegutils.c.

Referenced by ff_print_debug_info(), and finalize_frame().

MB_TYPE_16x8

#define MB_TYPE_16x8

Definition: mpegutils.h:43

MB_TYPE_16x16

#define MB_TYPE_16x16

Definition: mpegutils.h:42

MB_TYPE_8x16

#define MB_TYPE_8x16

Definition: mpegutils.h:44

MB_TYPE_8x8

#define MB_TYPE_8x8

Definition: mpegutils.h:45

The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a

Definition: undefined.txt:41

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