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Macros | Functions | Variables
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)
static int frame_size_alloc ( MpegEncContext s,
int  linesize 
)
static
static int alloc_frame_buffer ( MpegEncContext s,
Picture pic 
)
static

Allocate a frame buffer.

Definition at line 483 of file mpegvideo.c.

Referenced by ff_alloc_picture().

void ff_free_picture_tables ( Picture pic)
static int alloc_picture_tables ( MpegEncContext s,
Picture pic 
)
static

Definition at line 582 of file mpegvideo.c.

Referenced by ff_alloc_picture().

static int make_tables_writable ( Picture pic)
static

Definition at line 624 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 653 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 
)
static int update_picture_tables ( Picture dst,
Picture src 
)
static

Definition at line 732 of file mpegvideo.c.

Referenced by ff_mpeg_ref_picture().

int ff_mpeg_ref_picture ( MpegEncContext s,
Picture dst,
Picture src 
)
static void exchange_uv ( MpegEncContext s)
static

Definition at line 815 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 824 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 874 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 894 of file mpegvideo.c.

Referenced by ff_update_duplicate_context().

int ff_update_duplicate_context ( MpegEncContext dst,
MpegEncContext src 
)

Definition at line 921 of file mpegvideo.c.

Referenced by decode_chunks(), and encode_picture().

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).

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

Definition at line 1091 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 1114 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 
)
static int init_er ( MpegEncContext s)
static

Definition at line 1135 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 1175 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 1299 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 1413 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)
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] 
)
Parameters
static_storestatic 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 1588 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 1640 of file mpegvideo.c.

static void release_unused_pictures ( MpegEncContext s)
static

Definition at line 1684 of file mpegvideo.c.

Referenced by ff_mpv_frame_start().

static int pic_is_unused ( MpegEncContext s,
Picture pic 
)
inlinestatic

Definition at line 1695 of file mpegvideo.c.

Referenced by find_unused_picture().

static int find_unused_picture ( MpegEncContext s,
int  shared 
)
static

Definition at line 1706 of file mpegvideo.c.

Referenced by ff_find_unused_picture().

int ff_find_unused_picture ( MpegEncContext s,
int  shared 
)
static void gray_frame ( AVFrame frame)
static

Definition at line 1753 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 1773 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)
static int clip_line ( int *  sx,
int *  sy,
int *  ex,
int *  ey,
int  maxx 
)
static

Definition at line 2010 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
wwidth of the image
hheight of the image
stridestride/linesize of the image
colorcolor of the arrow

Definition at line 2039 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
wwidth of the image
hheight of the image
stridestride/linesize of the image
colorcolor of the arrow

Definition at line 2097 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 2136 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 2157 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 
)
int ff_mpv_export_qp_table ( MpegEncContext s,
AVFrame f,
Picture p,
int  qp_type 
)

Definition at line 2538 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 2550 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 2597 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 2734 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
scontext
dest_yluma destination pointer
dest_cbchroma cb/u destination pointer
dest_crchroma cr/v destination pointer
dirdirection (0->forward, 1->backward)
ref_picturearray[3] of pointers to the 3 planes of the reference picture
pix_ophalfpel 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 2802 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 2936 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 2972 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 2980 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 2988 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 3001 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 3042 of file mpegvideo.c.

Referenced by ff_mpv_decode_mb().

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.

permute block according to permuatation.

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

Definition at line 3347 of file mpegvideo.c.

Referenced by ff_dct_quantize_c().

void ff_mpeg_flush ( AVCodecContext avctx)

Definition at line 3368 of file mpegvideo.c.

Referenced by decode_wmv9(), and flush().

void ff_set_qscale ( MpegEncContext s,
int  qscale 
)
void ff_mpv_report_decode_progress ( MpegEncContext s)

Definition at line 3413 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]
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().