FFmpeg: libavcodec/dvdata.h File Reference

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libavcodec

Data Structures | Macros | Enumerations | Functions | Variables

dvdata.h File Reference

Constants for DV codec. More...

#include "avcodec.h"
#include "dsputil.h"
#include "get_bits.h"
#include "dv_profile.h"

Go to the source code of this file.

Data Structures

struct DVVideoContext

Macros

#define DV_PROFILE_IS_HD(p) ((p)->video_stype & 0x10)

#define DV_PROFILE_IS_1080i50(p) (((p)->video_stype == 0x14) && ((p)->dsf == 1))

#define DV_PROFILE_IS_720p50(p) (((p)->video_stype == 0x18) && ((p)->dsf == 1))

#define DV_MAX_FRAME_SIZE 576000

largest possible DV frame, in bytes (1080i50)

#define DV_MAX_BPM 8

maximum number of blocks per macroblock in any DV format

#define TEX_VLC_BITS 9

Enumerations

enum dv_section_type {
dv_sect_header = 0x1f, dv_sect_subcode = 0x3f, dv_sect_vaux = 0x56, dv_sect_audio = 0x76,
dv_sect_video = 0x96
}

enum dv_pack_type {
  dv_header525 = 0x3f, dv_header625 = 0xbf, dv_timecode = 0x13, dv_audio_source = 0x50,
  dv_audio_control = 0x51, dv_audio_recdate = 0x52, dv_audio_rectime = 0x53, dv_video_source = 0x60,
  dv_video_control = 0x61, dv_video_recdate = 0x62, dv_video_rectime = 0x63, dv_unknown_pack = 0xff
}

Functions

int ff_dv_init_dynamic_tables (const DVprofile *d)

int ff_dvvideo_init (AVCodecContext *avctx)

static int dv_work_pool_size (const DVprofile *d)

static void dv_calculate_mb_xy (DVVideoContext *s, DVwork_chunk *work_chunk, int m, int *mb_x, int *mb_y)

Variables

const uint8_t ff_dv_quant_shifts [22][4]

const uint8_t ff_dv_quant_offset [4]

const int ff_dv_iweight_88 [64]

const int ff_dv_iweight_248 [64]

const int ff_dv_iweight_1080_y [64]

The "inverse" DV100 weights are actually just the spec weights (zig-zagged).

const int ff_dv_iweight_1080_c [64]

const int ff_dv_iweight_720_y [64]

const int ff_dv_iweight_720_c [64]

RL_VLC_ELEM ff_dv_rl_vlc [1184]

Detailed Description

Constants for DV codec.

Definition in file dvdata.h.

Macro Definition Documentation

#define DV_PROFILE_IS_HD ( p ) ((p)->video_stype & 0x10)

Definition at line 82 of file dvdata.h.

Referenced by dv_decode_video_segment(), and ff_dv_init_dynamic_tables().

#define DV_PROFILE_IS_1080i50 ( p ) (((p)->video_stype == 0x14) && ((p)->dsf == 1))

Definition at line 83 of file dvdata.h.

Referenced by dv_work_pool_size(), and ff_dv_init_dynamic_tables().

#define DV_PROFILE_IS_720p50 ( p ) (((p)->video_stype == 0x18) && ((p)->dsf == 1))

Definition at line 84 of file dvdata.h.

Referenced by dv_work_pool_size(), and ff_dv_init_dynamic_tables().

#define DV_MAX_FRAME_SIZE 576000

largest possible DV frame, in bytes (1080i50)

Definition at line 89 of file dvdata.h.

#define DV_MAX_BPM 8

maximum number of blocks per macroblock in any DV format

Definition at line 94 of file dvdata.h.

Referenced by dv_decode_video_segment(), and dv_encode_video_segment().

#define TEX_VLC_BITS 9

Definition at line 96 of file dvdata.h.

Referenced by decode_block_intra(), dv_decode_ac(), ff_dvvideo_init(), h263_decode_block(), mdec_decode_block_intra(), mpeg1_decode_block_inter(), mpeg1_decode_block_intra(), mpeg1_fast_decode_block_inter(), mpeg2_decode_block_intra(), mpeg2_decode_block_non_intra(), mpeg2_fast_decode_block_intra(), mpeg2_fast_decode_block_non_intra(), and mpeg4_decode_block().

Enumeration Type Documentation

enum dv_section_type

Enumerator:: dv_sect_header

dv_sect_subcode

dv_sect_vaux

dv_sect_audio

dv_sect_video

Definition at line 49 of file dvdata.h.

enum dv_pack_type

Enumerator:: dv_header525

dv_header625

dv_timecode

dv_audio_source

dv_audio_control

dv_audio_recdate

dv_audio_rectime

dv_video_source

dv_video_control

dv_video_recdate

dv_video_rectime

dv_unknown_pack

Definition at line 57 of file dvdata.h.

Function Documentation

int ff_dv_init_dynamic_tables ( const DVprofile * d )

Definition at line 178 of file dv.c.

Referenced by dvvideo_decode_frame().

int ff_dvvideo_init ( AVCodecContext * avctx )

Definition at line 239 of file dv.c.

Referenced by dvvideo_init_encoder().

static int dv_work_pool_size ( const DVprofile * d )

inlinestatic

Definition at line 103 of file dvdata.h.

Referenced by dvvideo_decode_frame(), and ff_dv_init_dynamic_tables().

static void dv_calculate_mb_xy ( DVVideoContext * s,

DVwork_chunk * work_chunk,

int m,

int * mb_x,

int * mb_y

)

inlinestatic

Definition at line 113 of file dvdata.h.

Referenced by dv_decode_video_segment(), and dv_encode_video_segment().

Variable Documentation

const uint8_t ff_dv_quant_shifts[22][4]

Definition at line 31 of file dvdata.c.

Referenced by dv_guess_qnos(), and ff_dv_init_dynamic_tables().

const uint8_t ff_dv_quant_offset[4]

Definition at line 56 of file dvdata.c.

Referenced by dv_decode_video_segment(), and dv_guess_qnos().

const int ff_dv_iweight_88[64]

Definition at line 58 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_248[64]

Definition at line 68 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_1080_y[64]

The "inverse" DV100 weights are actually just the spec weights (zig-zagged).

Definition at line 82 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_1080_c[64]

Definition at line 92 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_720_y[64]

Definition at line 102 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

const int ff_dv_iweight_720_c[64]

Definition at line 112 of file dvdata.c.

Referenced by ff_dv_init_dynamic_tables().

RL_VLC_ELEM ff_dv_rl_vlc[1184]

Definition at line 52 of file dv.c.

Referenced by dv_decode_ac().

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