#include "config_components.h"
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "h264chroma.h"
#include "idctdsp.h"
#include "mathops.h"
#include "mpeg_er.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "mpeg4videodec.h"
#include "mpegvideodata.h"
#include "qpeldsp.h"
#include "threadframe.h"
#include "wmv2dec.h"
#include <limits.h>

Macros
#define	COPY(a) bak->a = src->a

#define	ALLOCZ_ARRAYS(p, mult, numb) ((p) = av_calloc(numb, mult * sizeof(*(p))))

#define	IS_ENCODER(s) (CONFIG_MPEGVIDEOENC && !lowres_flag && (s)->encoding)

#define	IS_MPEG12(s) (CONFIG_SMALL ? ((s)->out_format == FMT_MPEG1) : is_mpeg12)

Functions
static void	dct_unquantize_mpeg1_intra_c (MpegEncContext s, int16_t block, int n, int qscale)

static void	dct_unquantize_mpeg1_inter_c (MpegEncContext s, int16_t block, int n, int qscale)

static void	dct_unquantize_mpeg2_intra_c (MpegEncContext s, int16_t block, int n, int qscale)

static void	dct_unquantize_mpeg2_intra_bitexact (MpegEncContext s, int16_t block, int n, int qscale)

static void	dct_unquantize_mpeg2_inter_c (MpegEncContext s, int16_t block, int n, int qscale)

static void	dct_unquantize_h263_intra_c (MpegEncContext s, int16_t block, int n, int qscale)

static void	dct_unquantize_h263_inter_c (MpegEncContext s, int16_t block, int n, int qscale)

static void	gray16 (uint8_t dst, const uint8_t src, ptrdiff_t linesize, int h)

static void	gray8 (uint8_t dst, const uint8_t src, ptrdiff_t linesize, int h)

static av_cold int	dct_init (MpegEncContext *s)

av_cold void	ff_mpv_idct_init (MpegEncContext *s)

static int	init_duplicate_context (MpegEncContext *s)

int	ff_mpv_init_duplicate_contexts (MpegEncContext *s)
	Initialize an MpegEncContext's thread contexts. More...

static void	free_duplicate_context (MpegEncContext *s)

static void	free_duplicate_contexts (MpegEncContext *s)

static void	backup_duplicate_context (MpegEncContext bak, MpegEncContext src)

int	ff_update_duplicate_context (MpegEncContext dst, const MpegEncContext src)

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

int	ff_mpv_init_context_frame (MpegEncContext *s)
	Initialize and allocates MpegEncContext fields dependent on the resolution. More...

static void	clear_context (MpegEncContext *s)

av_cold int	ff_mpv_common_init (MpegEncContext *s)
	init common structure for both encoder and decoder. 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)

static int	hpel_motion_lowres (MpegEncContext s, uint8_t dest, uint8_t src, int field_based, int field_select, int src_x, int src_y, int width, int height, ptrdiff_t stride, int h_edge_pos, int v_edge_pos, int w, int h, h264_chroma_mc_func pix_op, int motion_x, int motion_y)

static av_always_inline void	mpeg_motion_lowres (MpegEncContext s, uint8_t dest_y, uint8_t dest_cb, uint8_t dest_cr, int field_based, int bottom_field, int field_select, uint8_t *ref_picture, h264_chroma_mc_func pix_op, int motion_x, int motion_y, int h, int mb_y)

static void	chroma_4mv_motion_lowres (MpegEncContext s, uint8_t dest_cb, uint8_t dest_cr, uint8_t ref_picture, h264_chroma_mc_func pix_op, int mx, int my)

static void	MPV_motion_lowres (MpegEncContext s, uint8_t dest_y, uint8_t dest_cb, uint8_t dest_cr, int dir, uint8_t *ref_picture, h264_chroma_mc_func pix_op)
	motion compensation of a single macroblock More...

static int	lowest_referenced_row (MpegEncContext *s, int dir)
	find the lowest MB row referenced in the MVs More...

static void	put_dct (MpegEncContext s, int16_t block, int i, uint8_t *dest, int line_size, int qscale)

static void	add_dct (MpegEncContext s, int16_t block, int i, uint8_t *dest, int line_size)

static void	add_dequant_dct (MpegEncContext s, int16_t block, int i, uint8_t *dest, int line_size, int qscale)

void	ff_clean_intra_table_entries (MpegEncContext *s)
	Clean dc, ac, coded_block for the current non-intra MB. More...

static av_always_inline void	mpv_reconstruct_mb_internal (MpegEncContext *s, int16_t block[12][64], int lowres_flag, int is_mpeg12)

void	ff_mpv_reconstruct_mb (MpegEncContext *s, int16_t block[12][64])

void	ff_init_block_index (MpegEncContext *s)

void	ff_set_qscale (MpegEncContext *s, int qscale)
	set qscale and update qscale dependent variables. More...

Detailed Description

The simplest mpeg encoder (well, it was the simplest!).

Definition in file mpegvideo.c.

Macro Definition Documentation

◆ COPY

#define COPY ( a ) bak->a = src->a

◆ ALLOCZ_ARRAYS

#define ALLOCZ_ARRAYS	(	p,
		mult,
		numb
	)	((p) = av_calloc(numb, mult * sizeof(*(p))))

◆ IS_ENCODER

#define IS_ENCODER ( s ) (CONFIG_MPEGVIDEOENC && !lowres_flag && (s)->encoding)

◆ IS_MPEG12

#define IS_MPEG12 ( s ) (CONFIG_SMALL ? ((s)->out_format == FMT_MPEG1) : is_mpeg12)

Function Documentation

◆ dct_unquantize_mpeg1_intra_c()

static void dct_unquantize_mpeg1_intra_c	(	MpegEncContext *	s,
		int16_t *	block,
		int	n,
		int	qscale
	)

static

Definition at line 52 of file mpegvideo.c.

Referenced by dct_init().

◆ dct_unquantize_mpeg1_inter_c()

static void dct_unquantize_mpeg1_inter_c	(	MpegEncContext *	s,
		int16_t *	block,
		int	n,
		int	qscale
	)

static

Definition at line 81 of file mpegvideo.c.

Referenced by dct_init().

◆ dct_unquantize_mpeg2_intra_c()

static void dct_unquantize_mpeg2_intra_c	(	MpegEncContext *	s,
		int16_t *	block,
		int	n,
		int	qscale
	)

static

Definition at line 110 of file mpegvideo.c.

Referenced by dct_init().

◆ dct_unquantize_mpeg2_intra_bitexact()

static void dct_unquantize_mpeg2_intra_bitexact	(	MpegEncContext *	s,
		int16_t *	block,
		int	n,
		int	qscale
	)

static

Definition at line 140 of file mpegvideo.c.

Referenced by dct_init().

◆ dct_unquantize_mpeg2_inter_c()

static void dct_unquantize_mpeg2_inter_c	(	MpegEncContext *	s,
		int16_t *	block,
		int	n,
		int	qscale
	)

static

Definition at line 174 of file mpegvideo.c.

Referenced by dct_init().

◆ dct_unquantize_h263_intra_c()

static void dct_unquantize_h263_intra_c	(	MpegEncContext *	s,
		int16_t *	block,
		int	n,
		int	qscale
	)

static

Definition at line 208 of file mpegvideo.c.

Referenced by dct_init().

◆ dct_unquantize_h263_inter_c()

static void dct_unquantize_h263_inter_c	(	MpegEncContext *	s,
		int16_t *	block,
		int	n,
		int	qscale
	)

static

Definition at line 242 of file mpegvideo.c.

Referenced by dct_init().

◆ gray16()

static void gray16	(	uint8_t *	dst,
		const uint8_t *	src,
		ptrdiff_t	linesize,
		int	h
	)

static

Definition at line 269 of file mpegvideo.c.

Referenced by dct_init().

◆ gray8()

static void gray8	(	uint8_t *	dst,
		const uint8_t *	src,
		ptrdiff_t	linesize,
		int	h
	)

static

Definition at line 275 of file mpegvideo.c.

Referenced by dct_init().

◆ dct_init()

static av_cold int dct_init ( MpegEncContext * s )

static

Definition at line 282 of file mpegvideo.c.

Referenced by ff_mpv_common_init(), and main().

◆ ff_mpv_idct_init()

av_cold void ff_mpv_idct_init ( MpegEncContext * s )

Definition at line 331 of file mpegvideo.c.

Referenced by dnxhd_encode_init(), ff_h263_decode_frame(), ff_h263_decode_init(), ff_mpeg4_workaround_bugs(), ff_mpeg_update_thread_context(), ff_mpv_encode_init(), ff_rv34_decode_init(), h261_decode_init(), ipu_decode_init(), mpeg_decode_init(), mpeg_decode_postinit(), rv10_decode_init(), and vcr2_init_sequence().

◆ init_duplicate_context()

static int init_duplicate_context ( MpegEncContext * s )

static

Definition at line 351 of file mpegvideo.c.

Referenced by ff_mpv_init_duplicate_contexts().

◆ 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 396 of file mpegvideo.c.

Referenced by ff_mpv_common_frame_size_change(), and ff_mpv_common_init().

◆ free_duplicate_context()

static void free_duplicate_context ( MpegEncContext * s )

static

Definition at line 420 of file mpegvideo.c.

Referenced by free_duplicate_contexts().

◆ free_duplicate_contexts()

static void free_duplicate_contexts ( MpegEncContext * s )

static

Definition at line 440 of file mpegvideo.c.

Referenced by ff_mpv_free_context_frame().

◆ backup_duplicate_context()

static void backup_duplicate_context	(	MpegEncContext *	bak,
		MpegEncContext *	src
	)

static

Definition at line 449 of file mpegvideo.c.

Referenced by ff_update_duplicate_context().

◆ ff_update_duplicate_context()

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

Definition at line 476 of file mpegvideo.c.

Referenced by decode_chunks(), and encode_picture().

◆ 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 507 of file mpegvideo.c.

Referenced by ff_mpv_decode_init(), and mpv_encode_defaults().

◆ 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 525 of file mpegvideo.c.

Referenced by ff_mpv_common_frame_size_change(), and ff_mpv_common_init().

◆ clear_context()

static void clear_context ( MpegEncContext * s )

static

Definition at line 659 of file mpegvideo.c.

Referenced by ff_mpv_common_init().

◆ ff_mpv_common_init()

av_cold 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 738 of file mpegvideo.c.

Referenced by ff_h263_decode_frame(), ff_h263_decode_init(), ff_mpeg_update_thread_context(), ff_mpv_encode_init(), ff_rv34_decode_init(), h261_decode_frame(), mpeg_decode_postinit(), rv10_decode_init(), rv20_decode_picture_header(), svq1_encode_init(), and vcr2_init_sequence().

◆ 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 825 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 879 of file mpegvideo.c.

Referenced by ff_h263_decode_end(), ff_mpv_common_init(), ff_mpv_encode_end(), ff_rv34_decode_end(), ff_rv34_decode_init(), ff_vc1_decode_end(), h261_decode_end(), h261_decode_frame(), ipu_decode_end(), mpeg_decode_end(), mpeg_decode_postinit(), rv10_decode_end(), rv20_decode_picture_header(), svq1_encode_end(), vc1_decode_frame(), and vcr2_init_sequence().

◆ hpel_motion_lowres()

static int hpel_motion_lowres	(	MpegEncContext *	s,
		uint8_t *	dest,
		uint8_t *	src,
		int	field_based,
		int	field_select,
		int	src_x,
		int	src_y,
		int	width,
		int	height,
		ptrdiff_t	stride,
		int	h_edge_pos,
		int	v_edge_pos,
		int	w,
		int	h,
		h264_chroma_mc_func *	pix_op,
		int	motion_x,
		int	motion_y
	)

inlinestatic

Definition at line 918 of file mpegvideo.c.

Referenced by MPV_motion_lowres().

◆ mpeg_motion_lowres()

static av_always_inline void mpeg_motion_lowres	(	MpegEncContext *	s,
		uint8_t *	dest_y,
		uint8_t *	dest_cb,
		uint8_t *	dest_cr,
		int	field_based,
		int	bottom_field,
		int	field_select,
		uint8_t **	ref_picture,
		h264_chroma_mc_func *	pix_op,
		int	motion_x,
		int	motion_y,
		int	h,
		int	mb_y
	)

static

Definition at line 965 of file mpegvideo.c.

Referenced by MPV_motion_lowres().

◆ chroma_4mv_motion_lowres()

static void chroma_4mv_motion_lowres	(	MpegEncContext *	s,
		uint8_t *	dest_cb,
		uint8_t *	dest_cr,
		uint8_t **	ref_picture,
		h264_chroma_mc_func *	pix_op,
		int	mx,
		int	my
	)

inlinestatic

Definition at line 1104 of file mpegvideo.c.

Referenced by MPV_motion_lowres().

◆ MPV_motion_lowres()

static void MPV_motion_lowres	(	MpegEncContext *	s,
		uint8_t *	dest_y,
		uint8_t *	dest_cb,
		uint8_t *	dest_cr,
		int	dir,
		uint8_t **	ref_picture,
		h264_chroma_mc_func *	pix_op
	)

inlinestatic

motion compensation of a single macroblock

Parameters

s	context
dest_y	luma destination pointer
dest_cb	chroma cb/u destination pointer
dest_cr	chroma cr/v destination pointer
dir	direction (0->forward, 1->backward)
ref_picture	array[3] of pointers to the 3 planes of the reference picture
pix_op	halfpel motion compensation function (average or put normally) the motion vectors are taken from s->mv and the MV type from s->mv_type

Definition at line 1172 of file mpegvideo.c.

Referenced by mpv_reconstruct_mb_internal().

◆ lowest_referenced_row()

static int lowest_referenced_row	(	MpegEncContext *	s,
		int	dir
	)

static

find the lowest MB row referenced in the MVs

Definition at line 1306 of file mpegvideo.c.

Referenced by mpv_reconstruct_mb_internal().

◆ put_dct()

static void put_dct	(	MpegEncContext *	s,
		int16_t *	block,
		int	i,
		uint8_t *	dest,
		int	line_size,
		int	qscale
	)

inlinestatic

Definition at line 1342 of file mpegvideo.c.

Referenced by mpv_reconstruct_mb_internal().

◆ add_dct()

static void add_dct	(	MpegEncContext *	s,
		int16_t *	block,
		int	i,
		uint8_t *	dest,
		int	line_size
	)

inlinestatic

Definition at line 1350 of file mpegvideo.c.

Referenced by mpv_reconstruct_mb_internal().

◆ add_dequant_dct()

static void add_dequant_dct	(	MpegEncContext *	s,
		int16_t *	block,
		int	i,
		uint8_t *	dest,
		int	line_size,
		int	qscale
	)

inlinestatic

Definition at line 1358 of file mpegvideo.c.

Referenced by mpv_reconstruct_mb_internal().

◆ ff_clean_intra_table_entries()

void ff_clean_intra_table_entries ( MpegEncContext * s )

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

Definition at line 1371 of file mpegvideo.c.

Referenced by encode_thread(), mpeg4_decode_partition_a(), and mpv_reconstruct_mb_internal().

◆ mpv_reconstruct_mb_internal()

static av_always_inline void mpv_reconstruct_mb_internal	(	MpegEncContext *	s,
		int16_t	block[12][64],
		int	lowres_flag,
		int	is_mpeg12
	)

static

Definition at line 1412 of file mpegvideo.c.

Referenced by ff_mpv_reconstruct_mb().

◆ ff_mpv_reconstruct_mb()

void ff_mpv_reconstruct_mb	(	MpegEncContext *	s,
		int16_t	block[12][64]
	)

Definition at line 1649 of file mpegvideo.c.

Referenced by decode_slice(), encode_mb_hq(), encode_thread(), h261_decode_mb(), h261_decode_mb_skipped(), mpeg_decode_slice(), mpeg_er_decode_mb(), and rv10_decode_packet().

◆ ff_init_block_index()

void ff_init_block_index ( MpegEncContext * s )

Definition at line 1673 of file mpegvideo.c.

Referenced by decode_slice(), encode_thread(), estimate_motion_thread(), ff_h261_reorder_mb_index(), h261_decode_mb(), h261_decode_mb_skipped(), init_block_index(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg_decode_slice(), mpeg_er_decode_mb(), rv10_decode_packet(), and rv34_decode_slice().

◆ ff_set_qscale()

void ff_set_qscale	(	MpegEncContext *	s,
		int	qscale
	)

set qscale and update qscale dependent variables.

Definition at line 1709 of file mpegvideo.c.

Referenced by decode_slice(), encode_mb_internal(), encode_thread(), ff_h261_encode_mb(), h261_decode_gob(), h261_decode_mb(), h263_decode_dquant(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg4_decode_partitioned_mb(), and rv10_decode_packet().

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ COPY

◆ ALLOCZ_ARRAYS

◆ IS_ENCODER

◆ IS_MPEG12

Function Documentation

◆ dct_unquantize_mpeg1_intra_c()

◆ dct_unquantize_mpeg1_inter_c()

◆ dct_unquantize_mpeg2_intra_c()

◆ dct_unquantize_mpeg2_intra_bitexact()

◆ dct_unquantize_mpeg2_inter_c()

◆ dct_unquantize_h263_intra_c()

◆ dct_unquantize_h263_inter_c()

◆ gray16()

◆ gray8()

◆ dct_init()

◆ ff_mpv_idct_init()

◆ init_duplicate_context()

◆ ff_mpv_init_duplicate_contexts()

◆ free_duplicate_context()

◆ free_duplicate_contexts()

◆ backup_duplicate_context()

◆ ff_update_duplicate_context()

◆ ff_mpv_common_defaults()

◆ ff_mpv_init_context_frame()

◆ clear_context()

◆ ff_mpv_common_init()

◆ ff_mpv_free_context_frame()

◆ ff_mpv_common_end()

◆ hpel_motion_lowres()

◆ mpeg_motion_lowres()

◆ chroma_4mv_motion_lowres()

◆ MPV_motion_lowres()

◆ lowest_referenced_row()

◆ put_dct()

◆ add_dct()

◆ add_dequant_dct()

◆ ff_clean_intra_table_entries()

◆ mpv_reconstruct_mb_internal()

◆ ff_mpv_reconstruct_mb()

◆ ff_init_block_index()

◆ ff_set_qscale()