FFmpeg: libavcodec/mpegvideo.h File Reference

FFmpeg

libavcodec

Data Structures | Macros | Typedefs | Enumerations | Functions

mpegvideo.h File Reference

#include "blockdsp.h"
#include "error_resilience.h"
#include "h264chroma.h"
#include "h263dsp.h"
#include "hpeldsp.h"
#include "idctdsp.h"
#include "mpegpicture.h"
#include "qpeldsp.h"
#include "videodsp.h"

Go to the source code of this file.

Data Structures

struct ScanTable

Scantable. More...

struct MpegEncContext

MpegEncContext. More...

Macros

#define MAX_THREADS 32

#define MV_DIR_FORWARD 1

#define MV_DIR_BACKWARD 2

#define MV_DIRECT 4

bidirectional mode where the difference equals the MV of the last P/S/I-Frame (MPEG-4) More...

#define MV_TYPE_16X16 0

1 vector for the whole mb More...

#define MV_TYPE_8X8 1

4 vectors (H.263, MPEG-4 4MV) More...

#define MV_TYPE_16X8 2

2 vectors, one per 16x8 block More...

#define MV_TYPE_FIELD 3

2 vectors, one per field More...

#define MV_TYPE_DMV 4

2 vectors, special mpeg2 Dual Prime Vectors More...

#define CHROMA_420 1

#define CHROMA_422 2

#define CHROMA_444 3

Typedefs

typedef MpegEncContext MPVContext

Enumerations

enum OutputFormat {
FMT_MPEG1, FMT_H261, FMT_H263, FMT_MJPEG,
FMT_SPEEDHQ
}

Functions

void ff_mpv_common_defaults (MpegEncContext *s)

Set the given MpegEncContext to common defaults (same for encoding and decoding). More...

int ff_mpv_common_init (MpegEncContext *s)

init common structure for both encoder and decoder. More...

int ff_mpv_init_duplicate_contexts (MpegEncContext *s)

Initialize an MpegEncContext's thread contexts. More...

int ff_mpv_init_context_frame (MpegEncContext *s)

Initialize and allocates MpegEncContext fields dependent on the resolution. More...

void ff_mpv_free_context_frame (MpegEncContext *s)

Frees and resets MpegEncContext fields depending on the resolution as well as the slice thread contexts. More...

void ff_mpv_common_end (MpegEncContext *s)

void ff_clean_intra_table_entries (MpegEncContext *s)

Clean dc, ac for the current non-intra MB. More...

int ff_update_duplicate_context (MpegEncContext *dst, const MpegEncContext *src)

void ff_set_qscale (MpegEncContext *s, int qscale)

set qscale and update qscale dependent variables. More...

void ff_mpv_idct_init (MpegEncContext *s)

void ff_init_scantable (const uint8_t *permutation, ScanTable *st, const uint8_t *src_scantable)

void ff_init_block_index (MpegEncContext *s)

void ff_mpv_motion (MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int dir, uint8_t *const *ref_picture, const op_pixels_func(*pix_op)[4], const qpel_mc_func(*qpix_op)[16])

static void ff_update_block_index (MpegEncContext *s, int bits_per_raw_sample, int lowres, int chroma_x_shift)

Detailed Description

mpegvideo header.

Definition in file mpegvideo.h.

Macro Definition Documentation

◆ MAX_THREADS

#define MAX_THREADS 32

Definition at line 41 of file mpegvideo.h.

◆ MV_DIR_FORWARD

#define MV_DIR_FORWARD 1

Definition at line 171 of file mpegvideo.h.

◆ MV_DIR_BACKWARD

#define MV_DIR_BACKWARD 2

Definition at line 172 of file mpegvideo.h.

◆ MV_DIRECT

#define MV_DIRECT 4

bidirectional mode where the difference equals the MV of the last P/S/I-Frame (MPEG-4)

Definition at line 173 of file mpegvideo.h.

◆ MV_TYPE_16X16

#define MV_TYPE_16X16 0

1 vector for the whole mb

Definition at line 175 of file mpegvideo.h.

◆ MV_TYPE_8X8

#define MV_TYPE_8X8 1

4 vectors (H.263, MPEG-4 4MV)

Definition at line 176 of file mpegvideo.h.

◆ MV_TYPE_16X8

#define MV_TYPE_16X8 2

2 vectors, one per 16x8 block

Definition at line 177 of file mpegvideo.h.

◆ MV_TYPE_FIELD

#define MV_TYPE_FIELD 3

2 vectors, one per field

Definition at line 178 of file mpegvideo.h.

◆ MV_TYPE_DMV

#define MV_TYPE_DMV 4

2 vectors, special mpeg2 Dual Prime Vectors

Definition at line 179 of file mpegvideo.h.

◆ CHROMA_420

#define CHROMA_420 1

Definition at line 264 of file mpegvideo.h.

◆ CHROMA_422

#define CHROMA_422 2

Definition at line 265 of file mpegvideo.h.

◆ CHROMA_444

#define CHROMA_444 3

Definition at line 266 of file mpegvideo.h.

Typedef Documentation

◆ MPVContext

typedef MpegEncContext MPVContext

Definition at line 290 of file mpegvideo.h.

Enumeration Type Documentation

◆ OutputFormat

enum OutputFormat

Enumerator
FMT_MPEG1
FMT_H261
FMT_H263
FMT_MJPEG
FMT_SPEEDHQ

Definition at line 52 of file mpegvideo.h.

Function Documentation

◆ ff_mpv_common_defaults()

void ff_mpv_common_defaults ( MpegEncContext * s )

Set the given MpegEncContext to common defaults (same for encoding and decoding).

The changed fields will not depend upon the prior state of the MpegEncContext.

Definition at line 190 of file mpegvideo.c.

Referenced by ff_mpv_decode_init(), and mpv_encode_defaults().

◆ ff_mpv_common_init()

int ff_mpv_common_init ( MpegEncContext * s )

init common structure for both encoder and decoder.

this assumes that some variables like width/height are already set

Definition at line 378 of file mpegvideo.c.

Referenced by ff_h263_decode_frame(), ff_h263_decode_init(), ff_mpv_encode_init(), ff_rv34_decode_init(), ff_vc1_decode_init(), h261_decode_frame(), mpeg_decode_postinit(), rv20_decode_picture_header(), and vcr2_init_sequence().

◆ ff_mpv_init_duplicate_contexts()

int ff_mpv_init_duplicate_contexts ( MpegEncContext * s )

Initialize an MpegEncContext's thread contexts.

Presumes that slice_context_count is already set and that all the fields that are freed/reset in free_duplicate_context() are NULL.

Definition at line 118 of file mpegvideo.c.

Referenced by ff_mpv_common_frame_size_change(), ff_mpv_common_init(), and ff_mpv_encode_init().

◆ ff_mpv_init_context_frame()

int ff_mpv_init_context_frame ( MpegEncContext * s )

Initialize and allocates MpegEncContext fields dependent on the resolution.

Definition at line 210 of file mpegvideo.c.

Referenced by ff_mpv_common_frame_size_change(), and ff_mpv_common_init().

◆ ff_mpv_free_context_frame()

void ff_mpv_free_context_frame ( MpegEncContext * s )

Frees and resets MpegEncContext fields depending on the resolution as well as the slice thread contexts.

Is used during resolution changes to avoid a full reinitialization of the codec.

Definition at line 421 of file mpegvideo.c.

Referenced by ff_mpv_common_end(), and ff_mpv_common_frame_size_change().

◆ ff_mpv_common_end()

void ff_mpv_common_end ( MpegEncContext * s )

Definition at line 447 of file mpegvideo.c.

Referenced by ff_mpv_common_init(), ff_mpv_decode_close(), ff_mpv_encode_end(), h261_decode_frame(), mpeg_decode_postinit(), rv20_decode_picture_header(), vc1_decode_reset(), and vcr2_init_sequence().

◆ ff_clean_intra_table_entries()

void ff_clean_intra_table_entries ( MpegEncContext * s )

Clean dc, ac for the current non-intra MB.

Definition at line 466 of file mpegvideo.c.

Referenced by ff_h263_clean_intra_table_entries().

◆ ff_update_duplicate_context()

int ff_update_duplicate_context ( MpegEncContext * dst,

const MpegEncContext * src

)

Definition at line 158 of file mpegvideo.c.

Referenced by decode_chunks(), and encode_picture().

◆ ff_set_qscale()

void ff_set_qscale ( MpegEncContext * s,

int qscale

)

set qscale and update qscale dependent variables.

Definition at line 524 of file mpegvideo.c.

Referenced by decode_slice(), encode_mb_internal(), encode_thread(), h261_encode_mb(), h263_decode_dquant(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg4_decode_partitioned_mb(), and rv10_decode_packet().

◆ ff_mpv_idct_init()

void ff_mpv_idct_init ( MpegEncContext * s )

Definition at line 96 of file mpegvideo.c.

Referenced by dnxhd_encode_init(), ff_h263_decode_frame(), ff_mpv_decode_init(), and ff_mpv_encode_init().

◆ ff_init_scantable()

void ff_init_scantable ( const uint8_t * permutation,

ScanTable * st,

const uint8_t * src_scantable

)

Definition at line 82 of file mpegvideo.c.

Referenced by decode_studio_vop_header(), decode_vop_header(), ff_mpv_idct_init(), ff_msmpeg4_common_init(), and ff_wmv2_common_init().

◆ ff_init_block_index()

void ff_init_block_index ( MpegEncContext * s )

Definition at line 491 of file mpegvideo.c.

Referenced by decode_slice(), encode_thread(), estimate_motion_thread(), ff_h261_reorder_mb_index(), h261_init_dest(), init_block_index(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg_decode_slice(), rv10_decode_packet(), and rv34_decode_slice().

◆ ff_mpv_motion()

void ff_mpv_motion ( MpegEncContext * s,

uint8_t * dest_y,

uint8_t * dest_cb,

uint8_t * dest_cr,

int dir,

uint8_t *const * ref_picture,

const op_pixels_func(*) pix_op[4],

const qpel_mc_func(*) qpix_op[16]

)

Definition at line 821 of file mpegvideo_motion.c.

Referenced by encode_mb_internal(), and mpv_reconstruct_mb_internal().

◆ ff_update_block_index()

static void ff_update_block_index ( MpegEncContext * s,

int bits_per_raw_sample,

int lowres,

int chroma_x_shift

)

inlinestatic

Definition at line 337 of file mpegvideo.h.

Referenced by decode_slice(), encode_thread(), ff_h261_reorder_mb_index(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), rv10_decode_packet(), and update_block_index().

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