#include <limits.h>
#include "config_components.h"
#include "libavutil/avassert.h"
#include "libavutil/emms.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/video_enc_params.h"
#include "avcodec.h"
#include "decode.h"
#include "h263.h"
#include "h264chroma.h"
#include "internal.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "mpegvideodec.h"
#include "mpeg4videodec.h"
#include "libavutil/refstruct.h"
#include "thread.h"
#include "threadprogress.h"
#include "wmv2dec.h"

Macros
#define	NOT_MPEG12_H261 0

#define	MAY_BE_MPEG12_H261 1

#define	DEFINITELY_MPEG12_H261 2

#define	IS_MPEG12_H261(s) (is_mpeg12 == MAY_BE_MPEG12_H261 ? ((s)->out_format <= FMT_H261) : is_mpeg12)

Functions
av_cold int	ff_mpv_decode_init (MpegEncContext s, AVCodecContext avctx)
	Initialize the given MpegEncContext for decoding. More...

int	ff_mpeg_update_thread_context (AVCodecContext dst, const AVCodecContext src)
	update_thread_context for mpegvideo-based decoders. More...

av_cold int	ff_mpv_decode_close (AVCodecContext *avctx)

av_cold int	ff_mpv_common_frame_size_change (MpegEncContext *s)

static int	alloc_picture (MpegEncContext s, MPVWorkPicture dst, int reference)

static int av_cold	alloc_dummy_frame (MpegEncContext s, MPVWorkPicture dst)

static void	color_frame (AVFrame *frame, int luma)

int	ff_mpv_alloc_dummy_frames (MpegEncContext *s)
	Ensure that the dummy frames are allocated according to pict_type if necessary. More...

int	ff_mpv_frame_start (MpegEncContext s, AVCodecContext avctx)
	generic function called after decoding the header and before a frame is decoded. More...

void	ff_mpv_frame_end (MpegEncContext *s)

void	ff_print_debug_info (const MpegEncContext s, const MPVPicture p, AVFrame *pict)

int	ff_mpv_export_qp_table (const MpegEncContext s, AVFrame f, const MPVPicture *p, int qp_type)

void	ff_mpeg_draw_horiz_band (MpegEncContext *s, int y, int h)

av_cold void	ff_mpeg_flush (AVCodecContext *avctx)

static int	hpel_motion_lowres (MpegEncContext s, uint8_t dest, const 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, const 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 const ref_picture, const 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 const ref_picture, const 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 const ref_picture, const 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	add_dct (MpegEncContext s, int16_t block[][64], int i, uint8_t dest, int line_size)

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

static void	add_dequant_dct (MpegEncContext s, int16_t block[][64], int i, uint8_t dest, int line_size, int qscale)

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

static av_cold void	debug_dct_coeffs (MPVContext *s, const int16_t block[][64])

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

Macro Definition Documentation

◆ NOT_MPEG12_H261

#define NOT_MPEG12_H261 0

Definition at line 879 of file mpegvideo_dec.c.

◆ MAY_BE_MPEG12_H261

#define MAY_BE_MPEG12_H261 1

Definition at line 880 of file mpegvideo_dec.c.

◆ DEFINITELY_MPEG12_H261

#define DEFINITELY_MPEG12_H261 2

Definition at line 881 of file mpegvideo_dec.c.

◆ IS_MPEG12_H261

#define IS_MPEG12_H261 ( s ) (is_mpeg12 == MAY_BE_MPEG12_H261 ? ((s)->out_format <= FMT_H261) : is_mpeg12)

Function Documentation

◆ ff_mpv_decode_init()

av_cold int ff_mpv_decode_init	(	MpegEncContext *	s,
		AVCodecContext *	avctx
	)

Initialize the given MpegEncContext for decoding.

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

Also initialize the picture pool.

Definition at line 47 of file mpegvideo_dec.c.

Referenced by ff_h263_decode_init(), ff_rv34_decode_init(), ff_vc1_decode_init(), h261_decode_init(), and mpeg_decode_init().

◆ ff_mpeg_update_thread_context()

int ff_mpeg_update_thread_context	(	AVCodecContext *	dst,
		const AVCodecContext *	src
	)

update_thread_context for mpegvideo-based decoders.

It updates the MPVPictures and generic stream-level parameters. If necessary (on dimension changes), it also performs reinitialization.

Return values

1	if a reinitialization happened
0	on success if no reinitialization happened
<0	error code

Definition at line 78 of file mpegvideo_dec.c.

Referenced by ff_rv34_decode_update_thread_context().

◆ ff_mpv_decode_close()

av_cold int ff_mpv_decode_close ( AVCodecContext * avctx )

Definition at line 125 of file mpegvideo_dec.c.

Referenced by ff_rv34_decode_end(), ff_vc1_decode_end(), mpeg_decode_end(), and wmv2_decode_end().

◆ ff_mpv_common_frame_size_change()

av_cold int ff_mpv_common_frame_size_change ( MpegEncContext * s )

Definition at line 134 of file mpegvideo_dec.c.

Referenced by ff_h263_decode_frame(), ff_mpeg_update_thread_context(), and ff_rv34_decode_frame().

◆ alloc_picture()

static int alloc_picture	(	MpegEncContext *	s,
		MPVWorkPicture *	dst,
		int	reference
	)

static

Definition at line 178 of file mpegvideo_dec.c.

Referenced by alloc_dummy_frame(), and ff_mpv_frame_start().

◆ alloc_dummy_frame()

static int av_cold alloc_dummy_frame	(	MpegEncContext *	s,
		MPVWorkPicture *	dst
	)

static

Definition at line 230 of file mpegvideo_dec.c.

Referenced by ff_mpv_alloc_dummy_frames().

◆ color_frame()

static void color_frame	(	AVFrame *	frame,
		int	luma
	)

static

Definition at line 245 of file mpegvideo_dec.c.

Referenced by ff_mpv_alloc_dummy_frames(), and ff_mpv_frame_start().

◆ ff_mpv_alloc_dummy_frames()

int ff_mpv_alloc_dummy_frames ( MpegEncContext * s )

Ensure that the dummy frames are allocated according to pict_type if necessary.

Definition at line 263 of file mpegvideo_dec.c.

Referenced by ff_mpv_frame_start(), and mpeg_field_start().

◆ ff_mpv_frame_start()

int ff_mpv_frame_start	(	MpegEncContext *	s,
		AVCodecContext *	avctx
	)

generic function called after decoding the header and before a frame is decoded.

Definition at line 306 of file mpegvideo_dec.c.

Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_rv34_decode_frame(), h261_decode_frame(), mpeg_field_start(), rv10_decode_packet(), and vc1_decode_frame().

◆ ff_mpv_frame_end()

void ff_mpv_frame_end ( MpegEncContext * s )

Definition at line 357 of file mpegvideo_dec.c.

Referenced by decode_wmv9(), ff_h263_decode_frame(), ff_rv34_decode_frame(), finish_frame(), h261_decode_frame(), rv10_decode_frame(), rv10_decode_packet(), slice_end(), and vc1_decode_frame().

◆ ff_print_debug_info()

void ff_print_debug_info	(	const MpegEncContext *	s,
		const MPVPicture *	p,
		AVFrame *	pict
	)

Definition at line 365 of file mpegvideo_dec.c.

Referenced by ff_h263_decode_frame(), finish_frame(), h261_decode_frame(), rv10_decode_frame(), slice_end(), and vc1_decode_frame().

◆ ff_mpv_export_qp_table()

int ff_mpv_export_qp_table	(	const MpegEncContext *	s,
		AVFrame *	f,
		const MPVPicture *	p,
		int	qp_type
	)

Definition at line 372 of file mpegvideo_dec.c.

Referenced by ff_h263_decode_frame(), finish_frame(), rv10_decode_frame(), and slice_end().

◆ ff_mpeg_draw_horiz_band()

void ff_mpeg_draw_horiz_band	(	MpegEncContext *	s,
		int	y,
		int	h
	)

Definition at line 403 of file mpegvideo_dec.c.

Referenced by d3d12va_mpeg2_end_frame(), decode_slice(), dxva2_mpeg2_end_frame(), mpeg_decode_slice(), vaapi_mpeg2_end_frame(), and vaapi_mpeg4_end_frame().

◆ ff_mpeg_flush()

av_cold void ff_mpeg_flush ( AVCodecContext * avctx )

Definition at line 411 of file mpegvideo_dec.c.

Referenced by decode_wmv9(), and flush().

◆ hpel_motion_lowres()

static int hpel_motion_lowres	(	MpegEncContext *	s,
		uint8_t *	dest,
		const 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,
		const h264_chroma_mc_func *	pix_op,
		int	motion_x,
		int	motion_y
	)

inlinestatic

Definition at line 424 of file mpegvideo_dec.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 const	ref_picture,
		const h264_chroma_mc_func *	pix_op,
		int	motion_x,
		int	motion_y,
		int	h,
		int	mb_y
	)

static

Definition at line 473 of file mpegvideo_dec.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 const	ref_picture,
		const h264_chroma_mc_func *	pix_op,
		int	mx,
		int	my
	)

inlinestatic

Definition at line 615 of file mpegvideo_dec.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 const	ref_picture,
		const 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 685 of file mpegvideo_dec.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 817 of file mpegvideo_dec.c.

Referenced by mpv_reconstruct_mb_internal().

◆ add_dct()

static void add_dct	(	MpegEncContext *	s,
		int16_t	block[][64],
		int	i,
		uint8_t *	dest,
		int	line_size
	)

inlinestatic

Definition at line 853 of file mpegvideo_dec.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 862 of file mpegvideo_dec.c.

Referenced by mpv_reconstruct_mb_internal().

◆ add_dequant_dct()

static void add_dequant_dct	(	MpegEncContext *	s,
		int16_t	block[][64],
		int	i,
		uint8_t *	dest,
		int	line_size,
		int	qscale
	)

inlinestatic

Definition at line 869 of file mpegvideo_dec.c.

Referenced by 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 893 of file mpegvideo_dec.c.

Referenced by ff_mpv_reconstruct_mb().

◆ debug_dct_coeffs()

static av_cold void debug_dct_coeffs	(	MPVContext *	s,
		const int16_t	block[][64]
	)

static

Definition at line 1064 of file mpegvideo_dec.c.

Referenced by ff_mpv_reconstruct_mb().

◆ ff_mpv_reconstruct_mb()

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

Definition at line 1083 of file mpegvideo_dec.c.

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

Macros

Functions

Macro Definition Documentation

◆ NOT_MPEG12_H261

◆ MAY_BE_MPEG12_H261

◆ DEFINITELY_MPEG12_H261

◆ IS_MPEG12_H261

Function Documentation

◆ ff_mpv_decode_init()

◆ ff_mpeg_update_thread_context()

◆ ff_mpv_decode_close()

◆ ff_mpv_common_frame_size_change()

◆ alloc_picture()

◆ alloc_dummy_frame()

◆ color_frame()

◆ ff_mpv_alloc_dummy_frames()

◆ ff_mpv_frame_start()

◆ ff_mpv_frame_end()

◆ ff_print_debug_info()

◆ ff_mpv_export_qp_table()

◆ ff_mpeg_draw_horiz_band()

◆ ff_mpeg_flush()

◆ hpel_motion_lowres()

◆ mpeg_motion_lowres()

◆ chroma_4mv_motion_lowres()

◆ MPV_motion_lowres()

◆ lowest_referenced_row()

◆ add_dct()

◆ put_dct()

◆ add_dequant_dct()

◆ mpv_reconstruct_mb_internal()

◆ debug_dct_coeffs()

◆ ff_mpv_reconstruct_mb()