mpegvideo.c File Reference

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

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/motion_vector.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "blockdsp.h"
#include "h264chroma.h"
#include "idctdsp.h"
#include "internal.h"
#include "mathops.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "qpeldsp.h"
#include "thread.h"
#include <limits.h>

Go to the source code of this file.

Macros
#define	MAKE_WRITABLE(table)
#define	UPDATE_TABLE(table)
#define	COPY(a)   bak->a = src->a
#define	UPDATE_PICTURE(pic)
#define	REBASE_PICTURE(pic, new_ctx, old_ctx)
#define	COLOR(theta, r)

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	mpeg_er_decode_mb (void *opaque, int ref, int mv_dir, int mv_type, int(*mv)[2][4][2], int mb_x, int mb_y, int mb_intra, int mb_skipped)
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	frame_size_alloc (MpegEncContext *s, int linesize)
static int	alloc_frame_buffer (MpegEncContext *s, Picture *pic)
	Allocate a frame buffer.
void	ff_free_picture_tables (Picture *pic)
static int	alloc_picture_tables (MpegEncContext *s, Picture *pic)
static int	make_tables_writable (Picture *pic)
int	ff_alloc_picture (MpegEncContext *s, Picture *pic, int shared)
	Allocate a Picture.
void	ff_mpeg_unref_picture (MpegEncContext *s, Picture *pic)
	Deallocate a picture.
static int	update_picture_tables (Picture *dst, Picture *src)
int	ff_mpeg_ref_picture (MpegEncContext *s, Picture *dst, Picture *src)
static void	exchange_uv (MpegEncContext *s)
static int	init_duplicate_context (MpegEncContext *s)
static void	free_duplicate_context (MpegEncContext *s)
static void	backup_duplicate_context (MpegEncContext *bak, MpegEncContext *src)
int	ff_update_duplicate_context (MpegEncContext *dst, MpegEncContext *src)
int	ff_mpeg_update_thread_context (AVCodecContext *dst, const AVCodecContext *src)
void	ff_mpv_common_defaults (MpegEncContext *s)
	Set the given MpegEncContext to common defaults (same for encoding and decoding).
void	ff_mpv_decode_defaults (MpegEncContext *s)
	Set the given MpegEncContext to defaults for decoding.
void	ff_mpv_decode_init (MpegEncContext *s, AVCodecContext *avctx)
static int	init_er (MpegEncContext *s)
static int	init_context_frame (MpegEncContext *s)
	Initialize and allocates MpegEncContext fields dependent on the resolution.
av_cold int	ff_mpv_common_init (MpegEncContext *s)
	init common structure for both encoder and decoder.
static void	free_context_frame (MpegEncContext *s)
	Frees and resets MpegEncContext fields depending on the resolution.
int	ff_mpv_common_frame_size_change (MpegEncContext *s)
void	ff_mpv_common_end (MpegEncContext *s)
av_cold void	ff_init_rl (RLTable *rl, uint8_t static_store[2][2 *MAX_RUN+MAX_LEVEL+3])
av_cold void	ff_init_vlc_rl (RLTable *rl, unsigned static_size)
static void	release_unused_pictures (MpegEncContext *s)
static int	pic_is_unused (MpegEncContext *s, Picture *pic)
static int	find_unused_picture (MpegEncContext *s, int shared)
int	ff_find_unused_picture (MpegEncContext *s, int shared)
static void	gray_frame (AVFrame *frame)
int	ff_mpv_frame_start (MpegEncContext *s, AVCodecContext *avctx)
	generic function called after decoding the header and before a frame is decoded.
void	ff_mpv_frame_end (MpegEncContext *s)
static int	clip_line (int *sx, int *sy, int *ex, int *ey, int maxx)
static void	draw_line (uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color)
	Draw a line from (ex, ey) -> (sx, sy).
static void	draw_arrow (uint8_t *buf, int sx, int sy, int ex, int ey, int w, int h, int stride, int color, int tail, int direction)
	Draw an arrow from (ex, ey) -> (sx, sy).
static int	add_mb (AVMotionVector *mb, uint32_t mb_type, int dst_x, int dst_y, int src_x, int src_y, int direction)
void	ff_print_debug_info2 (AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table, uint32_t *mbtype_table, int8_t *qscale_table, int16_t(*motion_val[2])[2], int *low_delay, int mb_width, int mb_height, int mb_stride, int quarter_sample)
	Print debugging info for the given picture.
void	ff_print_debug_info (MpegEncContext *s, Picture *p, AVFrame *pict)
int	ff_mpv_export_qp_table (MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
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
int	ff_mpv_lowest_referenced_row (MpegEncContext *s, int dir)
	find the lowest MB row referenced in the MVs
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.
static av_always_inline void	mpv_decode_mb_internal (MpegEncContext *s, int16_t block[12][64], int lowres_flag, int is_mpeg12)
void	ff_mpv_decode_mb (MpegEncContext *s, int16_t block[12][64])
void	ff_mpeg_draw_horiz_band (MpegEncContext *s, int y, int h)
void	ff_init_block_index (MpegEncContext *s)
void	ff_block_permute (int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last)
	Permute an 8x8 block.
void	ff_mpeg_flush (AVCodecContext *avctx)
void	ff_set_qscale (MpegEncContext *s, int qscale)
	set qscale and update qscale dependent variables.
void	ff_mpv_report_decode_progress (MpegEncContext *s)

Variables
static const uint8_t	ff_default_chroma_qscale_table [32]
const uint8_t	ff_mpeg1_dc_scale_table [128]
static const uint8_t	mpeg2_dc_scale_table1 [128]
static const uint8_t	mpeg2_dc_scale_table2 [128]
static const uint8_t	mpeg2_dc_scale_table3 [128]
const uint8_t *const	ff_mpeg2_dc_scale_table [4]
const uint8_t	ff_alternate_horizontal_scan [64]
const uint8_t	ff_alternate_vertical_scan [64]

Detailed Description

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

Definition in file mpegvideo.c.

Macro Definition Documentation

#define MAKE_WRITABLE

(

table

)

Value:

do {\
    if (pic->table &&\
       (ret = av_buffer_make_writable(&pic->table)) < 0)\
    return ret;\
} while (0)

Referenced by make_tables_writable().

#define UPDATE_TABLE

(

table

)

Value:

do {\
    if (src->table &&\
        (!dst->table || dst->table->buffer != src->table->buffer)) {\
        av_buffer_unref(&dst->table);\
        dst->table = av_buffer_ref(src->table);\
        if (!dst->table) {\
            ff_free_picture_tables(dst);\
            return AVERROR(ENOMEM);\
        }\
    }\
} while (0)

Referenced by update_picture_tables().

#define COPY

(

a

)

bak->a = src->a

#define UPDATE_PICTURE

(

pic

)

Value:

do {\
    ff_mpeg_unref_picture(s, &s->pic);\
    if (s1->pic.f && s1->pic.f->buf[0])\
        ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
    else\
        ret = update_picture_tables(&s->pic, &s1->pic);\
    if (ret < 0)\
        return ret;\
} while (0)

Referenced by ff_mpeg_update_thread_context().

#define REBASE_PICTURE	(		pic,
			new_ctx,
			old_ctx
	)

Value:

((pic && pic >= old_ctx->picture &&                                       \
      pic < old_ctx->picture + MAX_PICTURE_COUNT) ?                           \
        &new_ctx->picture[pic - old_ctx->picture] : NULL)

#define COLOR	(		theta,
			r
	)

Value:

u = (int)(128 + r * cos(theta * 3.141592 / 180)); \
    v = (int)(128 + r * sin(theta * 3.141592 / 180));

Function Documentation

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

static

Definition at line 133 of file mpegvideo.c.

Referenced by dct_init().

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

static

Definition at line 162 of file mpegvideo.c.

Referenced by dct_init().

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

static

Definition at line 191 of file mpegvideo.c.

Referenced by dct_init().

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

static

Definition at line 218 of file mpegvideo.c.

Referenced by dct_init().

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

static

Definition at line 249 of file mpegvideo.c.

Referenced by dct_init().

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

static

Definition at line 280 of file mpegvideo.c.

Referenced by dct_init().

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

static

Definition at line 314 of file mpegvideo.c.

Referenced by dct_init().

static void mpeg_er_decode_mb ( void *  opaque, int  ref, int  mv_dir, int  mv_type, int(*)  mv[2][4][2], int  mb_x, int  mb_y, int  mb_intra, int  mb_skipped  )

static

Definition at line 340 of file mpegvideo.c.

Referenced by init_er().

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

static

Definition at line 369 of file mpegvideo.c.

Referenced by dct_init().

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

static

Definition at line 375 of file mpegvideo.c.

Referenced by dct_init().

static av_cold int dct_init ( MpegEncContext *  s )

static

Definition at line 382 of file mpegvideo.c.

Referenced by ff_mpv_common_init().

av_cold void ff_mpv_idct_init

(

MpegEncContext *

s

)

Definition at line 427 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(), ff_rv34_decode_init_thread_copy(), h261_decode_frame(), mpeg_decode_init(), rv10_decode_init(), and vcr2_init_sequence().

static int frame_size_alloc ( MpegEncContext *  s, int  linesize  )

static

Definition at line 445 of file mpegvideo.c.

Referenced by alloc_frame_buffer(), ff_mpeg_update_thread_context(), and ff_update_duplicate_context().

static int alloc_frame_buffer ( MpegEncContext *  s, Picture *  pic  )

static

Allocate a frame buffer.

Definition at line 482 of file mpegvideo.c.

Referenced by ff_alloc_picture().

void ff_free_picture_tables

(

Picture *

pic

)

Definition at line 561 of file mpegvideo.c.

Referenced by ff_alloc_picture(), ff_find_unused_picture(), ff_mpeg_unref_picture(), ff_mpv_common_end(), and ff_mpv_encode_end().

static int alloc_picture_tables ( MpegEncContext *  s, Picture *  pic  )

static

Definition at line 581 of file mpegvideo.c.

Referenced by ff_alloc_picture().

static int make_tables_writable ( Picture *  pic )

static

Definition at line 623 of file mpegvideo.c.

Referenced by ff_alloc_picture().

int ff_alloc_picture	(	MpegEncContext *	s,
		Picture *	pic,
		int	shared
	)

Allocate a Picture.

The pixels are allocated/set by calling get_buffer() if shared = 0

Definition at line 652 of file mpegvideo.c.

Referenced by ff_mpv_frame_start(), load_input_picture(), and select_input_picture().

void ff_mpeg_unref_picture	(	MpegEncContext *	s,
		Picture *	pic
	)

Deallocate a picture.

Definition at line 709 of file mpegvideo.c.

Referenced by alloc_frame_buffer(), ff_alloc_picture(), ff_find_unused_picture(), ff_mpeg_flush(), ff_mpeg_ref_picture(), ff_mpeg_update_thread_context(), ff_mpv_common_end(), ff_mpv_encode_end(), ff_mpv_encode_picture(), ff_mpv_frame_start(), frame_start(), release_unused_pictures(), and select_input_picture().

static int update_picture_tables ( Picture *  dst, Picture *  src  )

static

Definition at line 731 of file mpegvideo.c.

Referenced by ff_mpeg_ref_picture().

int ff_mpeg_ref_picture	(	MpegEncContext *	s,
		Picture *	dst,
		Picture *	src
	)

Definition at line 776 of file mpegvideo.c.

Referenced by ff_mpeg_update_thread_context(), ff_mpv_frame_start(), frame_start(), and select_input_picture().

static void exchange_uv ( MpegEncContext *  s )

static

Definition at line 814 of file mpegvideo.c.

Referenced by ff_update_duplicate_context(), and init_duplicate_context().

static int init_duplicate_context ( MpegEncContext *  s )

static

Definition at line 823 of file mpegvideo.c.

Referenced by ff_mpv_common_frame_size_change(), and ff_mpv_common_init().

static void free_duplicate_context ( MpegEncContext *  s )

static

Definition at line 873 of file mpegvideo.c.

Referenced by ff_mpv_common_end(), and ff_mpv_common_frame_size_change().

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

static

Definition at line 893 of file mpegvideo.c.

Referenced by ff_update_duplicate_context().

int ff_update_duplicate_context	(	MpegEncContext *	dst,
		MpegEncContext *	src
	)

Definition at line 920 of file mpegvideo.c.

Referenced by decode_chunks(), and encode_picture().

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

Definition at line 945 of file mpegvideo.c.

Referenced by ff_rv34_decode_update_thread_context(), mpeg4_update_thread_context(), and mpeg_decode_update_thread_context().

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 1090 of file mpegvideo.c.

Referenced by ff_mpv_decode_defaults(), and mpv_encode_defaults().

void ff_mpv_decode_defaults

(

MpegEncContext *

s

)

Set the given MpegEncContext to defaults for decoding.

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

Definition at line 1113 of file mpegvideo.c.

Referenced by ff_h263_decode_init(), ff_rv34_decode_init(), h261_decode_init(), mpeg_decode_init(), and rv10_decode_init().

void ff_mpv_decode_init	(	MpegEncContext *	s,
		AVCodecContext *	avctx
	)

Definition at line 1118 of file mpegvideo.c.

Referenced by ff_h263_decode_init(), ff_rv34_decode_init(), h261_decode_init(), mpeg_decode_init(), and rv10_decode_init().

static int init_er ( MpegEncContext *  s )

static

Definition at line 1132 of file mpegvideo.c.

Referenced by init_context_frame().

static int init_context_frame ( MpegEncContext *  s )

static

Initialize and allocates MpegEncContext fields dependent on the resolution.

Definition at line 1171 of file mpegvideo.c.

Referenced by ff_mpv_common_frame_size_change(), and 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 1295 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(), ff_rv34_decode_init_thread_copy(), h261_decode_frame(), rv10_decode_init(), rv20_decode_picture_header(), svq1_encode_init(), and vcr2_init_sequence().

static void free_context_frame ( MpegEncContext *  s )

static

Frees and resets MpegEncContext fields depending on the resolution.

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

Definition at line 1409 of file mpegvideo.c.

Referenced by ff_mpv_common_end(), and ff_mpv_common_frame_size_change().

int ff_mpv_common_frame_size_change

(

MpegEncContext *

s

)

Definition at line 1458 of file mpegvideo.c.

Referenced by ff_h263_decode_frame(), ff_mpeg_update_thread_context(), ff_rv34_decode_frame(), and ff_rv34_decode_update_thread_context().

void ff_mpv_common_end

(

MpegEncContext *

s

)

Definition at line 1534 of file mpegvideo.c.

Referenced by ff_h263_decode_end(), ff_mpv_common_frame_size_change(), ff_mpv_common_init(), ff_mpv_encode_end(), ff_rv34_decode_end(), ff_rv34_decode_init(), ff_rv34_decode_init_thread_copy(), ff_vc1_decode_end(), h261_decode_end(), h261_decode_frame(), mpeg_decode_end(), rv10_decode_end(), rv20_decode_picture_header(), svq1_encode_end(), vc1_decode_frame(), and vcr2_init_sequence().

av_cold void ff_init_rl	(	RLTable *	rl,
		uint8_t	static_store[2][2 *MAX_RUN+MAX_LEVEL+3]
	)

Parameters

static_store

static uint8_t array[2][2*MAX_RUN + MAX_LEVEL + 3] which will hold the level and run tables, if this is NULL av_malloc() will be used

Definition at line 1584 of file mpegvideo.c.

Referenced by encode_init(), ff_h261_common_init(), ff_h263_decode_init_vlc(), ff_h263_encode_init(), ff_mpeg12_init_vlcs(), ff_mpeg1_encode_init(), ff_mpeg4videodec_static_init(), ff_msmpeg4_decode_init(), and ff_msmpeg4_encode_init().

av_cold void ff_init_vlc_rl	(	RLTable *	rl,
		unsigned	static_size
	)

Definition at line 1636 of file mpegvideo.c.

static void release_unused_pictures ( MpegEncContext *  s )

static

Definition at line 1680 of file mpegvideo.c.

Referenced by ff_mpv_frame_start().

static int pic_is_unused ( MpegEncContext *  s, Picture *  pic  )

inlinestatic

Definition at line 1691 of file mpegvideo.c.

Referenced by find_unused_picture().

static int find_unused_picture ( MpegEncContext *  s, int  shared  )

static

Definition at line 1702 of file mpegvideo.c.

Referenced by ff_find_unused_picture().

int ff_find_unused_picture	(	MpegEncContext *	s,
		int	shared
	)

Definition at line 1735 of file mpegvideo.c.

Referenced by ff_h263_decode_frame(), ff_mpv_frame_start(), load_input_picture(), and select_input_picture().

static void gray_frame ( AVFrame *  frame )

static

Definition at line 1749 of file mpegvideo.c.

Referenced by 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 1769 of file mpegvideo.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().

void ff_mpv_frame_end

(

MpegEncContext *

s

)

Definition at line 1996 of file mpegvideo.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().

static int clip_line ( int *  sx, int *  sy, int *  ex, int *  ey, int  maxx  )

static

Definition at line 2006 of file mpegvideo.c.

Referenced by draw_line().

static void draw_line ( uint8_t *  buf, int  sx, int  sy, int  ex, int  ey, int  w, int  h, int  stride, int  color  )

static

Draw a line from (ex, ey) -> (sx, sy).

Parameters

w	width of the image
h	height of the image
stride	stride/linesize of the image
color	color of the arrow

Definition at line 2035 of file mpegvideo.c.

Referenced by draw_arrow().

static void draw_arrow ( uint8_t *  buf, int  sx, int  sy, int  ex, int  ey, int  w, int  h, int  stride, int  color, int  tail, int  direction  )

static

Draw an arrow from (ex, ey) -> (sx, sy).

Parameters

w	width of the image
h	height of the image
stride	stride/linesize of the image
color	color of the arrow

Definition at line 2093 of file mpegvideo.c.

Referenced by ff_print_debug_info2().

static int add_mb ( AVMotionVector *  mb, uint32_t  mb_type, int  dst_x, int  dst_y, int  src_x, int  src_y, int  direction  )

static

Definition at line 2132 of file mpegvideo.c.

Referenced by ff_print_debug_info2().

void ff_print_debug_info2	(	AVCodecContext *	avctx,
		AVFrame *	pict,
		uint8_t *	mbskip_table,
		uint32_t *	mbtype_table,
		int8_t *	qscale_table,
		int16_t(*[2])	motion_val[2],
		int *	low_delay,
		int	mb_width,
		int	mb_height,
		int	mb_stride,
		int	quarter_sample
	)

Print debugging info for the given picture.

Definition at line 2151 of file mpegvideo.c.

Referenced by ff_print_debug_info(), and h264_decode_frame().

void ff_print_debug_info	(	MpegEncContext *	s,
		Picture *	p,
		AVFrame *	pict
	)

Definition at line 2527 of file mpegvideo.c.

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

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

Definition at line 2534 of file mpegvideo.c.

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

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 2546 of file mpegvideo.c.

Referenced by MPV_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 2593 of file mpegvideo.c.

Referenced by MPV_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 2730 of file mpegvideo.c.

Referenced by 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 2798 of file mpegvideo.c.

Referenced by mpv_decode_mb_internal().

int ff_mpv_lowest_referenced_row	(	MpegEncContext *	s,
		int	dir
	)

find the lowest MB row referenced in the MVs

Definition at line 2932 of file mpegvideo.c.

Referenced by mpv_decode_mb_internal().

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

inlinestatic

Definition at line 2968 of file mpegvideo.c.

Referenced by mpv_decode_mb_internal().

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

inlinestatic

Definition at line 2976 of file mpegvideo.c.

Referenced by mpv_decode_mb_internal().

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

inlinestatic

Definition at line 2984 of file mpegvideo.c.

Referenced by mpv_decode_mb_internal().

void ff_clean_intra_table_entries

(

MpegEncContext *

s

)

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

Definition at line 2997 of file mpegvideo.c.

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

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

static

Definition at line 3038 of file mpegvideo.c.

Referenced by ff_mpv_decode_mb().

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

Definition at line 3284 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().

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

Definition at line 3296 of file mpegvideo.c.

Referenced by decode_slice(), dxva2_mpeg2_end_frame(), dxva2_vc1_end_frame(), ff_intrax8_decode_picture(), ff_xvmc_decode_mb(), ff_xvmc_field_end(), mpeg_decode_slice(), vc1_decode_b_blocks(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_p_blocks(), and vc1_decode_skip_blocks().

void ff_init_block_index

(

MpegEncContext *

s

)

Definition at line 3303 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().

void ff_block_permute	(	int16_t *	block,
		uint8_t *	permutation,
		const uint8_t *	scantable,
		int	last
	)

Permute an 8x8 block.

permute block according to permuatation.

Parameters

block	the block which will be permuted according to the given permutation vector
permutation	the permutation vector
last	the last non zero coefficient in scantable order, used to speed the permutation up
scantable	the used scantable, this is only used to speed the permutation up, the block is not (inverse) permutated to scantable order!

Definition at line 3343 of file mpegvideo.c.

Referenced by ff_dct_quantize_c().

void ff_mpeg_flush

(

AVCodecContext *

avctx

)

Definition at line 3364 of file mpegvideo.c.

Referenced by decode_wmv9(), and flush().

void ff_set_qscale	(	MpegEncContext *	s,
		int	qscale
	)

set qscale and update qscale dependent variables.

Definition at line 3395 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().

void ff_mpv_report_decode_progress

(

MpegEncContext *

s

)

Definition at line 3409 of file mpegvideo.c.

Referenced by decode_slice(), and mpeg_decode_slice().

Variable Documentation

const uint8_t ff_default_chroma_qscale_table[32]

static

Initial value:

= {

     0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
    16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
}

Definition at line 50 of file mpegvideo.c.

Referenced by ff_mpv_common_defaults().

const uint8_t ff_mpeg1_dc_scale_table[128]

Initial value:

= {

    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
}

Definition at line 56 of file mpegvideo.c.

Referenced by ff_flv_decode_picture_header(), ff_flv_encode_picture_header(), ff_h261_encode_init(), ff_h263_decode_picture_header(), ff_h263_encode_init(), ff_intel_h263_decode_picture_header(), ff_mpv_common_defaults(), ff_msmpeg4_common_init(), ff_rv20_encode_picture_header(), and rv10_decode_packet().

const uint8_t mpeg2_dc_scale_table1[128]

static

Initial value:

= {

    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
}

Definition at line 68 of file mpegvideo.c.

const uint8_t mpeg2_dc_scale_table2[128]

static

Initial value:

= {

    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
}

Definition at line 80 of file mpegvideo.c.

const uint8_t mpeg2_dc_scale_table3[128]

static

Initial value:

= {

    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
}

Definition at line 92 of file mpegvideo.c.

const uint8_t* const ff_mpeg2_dc_scale_table[4]

Initial value:

= {
    ff_mpeg1_dc_scale_table,
    mpeg2_dc_scale_table1,
    mpeg2_dc_scale_table2,
    mpeg2_dc_scale_table3,
}

Definition at line 104 of file mpegvideo.c.

Referenced by encode_picture(), and ff_mpeg12_common_init().

const uint8_t ff_alternate_horizontal_scan[64]

Initial value:

= {
     0,  1,  2,  3,  8,  9, 16, 17,
    10, 11,  4,  5,  6,  7, 15, 14,
    13, 12, 19, 18, 24, 25, 32, 33,
    26, 27, 20, 21, 22, 23, 28, 29,
    30, 31, 34, 35, 40, 41, 48, 49,
    42, 43, 36, 37, 38, 39, 44, 45,
    46, 47, 50, 51, 56, 57, 58, 59,
    52, 53, 54, 55, 60, 61, 62, 63,
}

Definition at line 111 of file mpegvideo.c.

Referenced by ff_mpv_idct_init().

const uint8_t ff_alternate_vertical_scan[64]

Initial value:

= {
     0,  8, 16, 24,  1,  9,  2, 10,
    17, 25, 32, 40, 48, 56, 57, 49,
    41, 33, 26, 18,  3, 11,  4, 12,
    19, 27, 34, 42, 50, 58, 35, 43,
    51, 59, 20, 28,  5, 13,  6, 14,
    21, 29, 36, 44, 52, 60, 37, 45,
    53, 61, 22, 30,  7, 15, 23, 31,
    38, 46, 54, 62, 39, 47, 55, 63,
}

Definition at line 122 of file mpegvideo.c.

Referenced by ff_mpv_idct_init(), and mpeg_decode_picture_coding_extension().