hvirtual/quicktime/ffmpeg/libavcodec/msmpeg4.c File Reference

#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "msmpeg4data.h"
#include "wmv2.c"

Include dependency graph for msmpeg4.c:

Go to the source code of this file.

Defines

#define DC_VLC_BITS   9
#define CBPY_VLC_BITS   6
#define INTER_INTRA_VLC_BITS   3
#define V1_INTRA_CBPC_VLC_BITS   6
#define V1_INTER_CBPC_VLC_BITS   6
#define V2_INTRA_CBPC_VLC_BITS   3
#define V2_MB_TYPE_VLC_BITS   7
#define MV_VLC_BITS   9
#define V2_MV_VLC_BITS   9
#define TEX_VLC_BITS   9
#define MB_NON_INTRA_VLC_BITS   9
#define MB_INTRA_VLC_BITS   9
#define II_BITRATE   128*1024
#define MBAC_BITRATE   50*1024
#define DEFAULT_INTER_INDEX   3
#define set_stat(var)
#define DC_MAX   119

Functions

static void msmpeg4_encode_block (MpegEncContext *s, DCTELEM *block, int n)
static int msmpeg4_decode_block (MpegEncContext *s, DCTELEM *block, int n, int coded, const uint8_t *scantable)
static int msmpeg4_decode_dc (MpegEncContext *s, int n, int *dir_ptr)
static int msmpeg4_decode_motion (MpegEncContext *s, int *mx_ptr, int *my_ptr)
static void msmpeg4v2_encode_motion (MpegEncContext *s, int val)
static void init_h263_dc_for_msmpeg4 (void)
static void msmpeg4_memsetw (short *tab, int val, int n)
static int msmpeg4v12_decode_mb (MpegEncContext *s, DCTELEM block[6][64])
static int msmpeg4v34_decode_mb (MpegEncContext *s, DCTELEM block[6][64])
static int wmv2_decode_mb (MpegEncContext *s, DCTELEM block[6][64])
static void common_init (MpegEncContext *s)
static int coded_block_pred (MpegEncContext *s, int n, uint8_t **coded_block_ptr)
static int msmpeg4v1_pred_dc (MpegEncContext *s, int n, int32_t **dc_val_ptr)
static int get_dc (uint8_t *src, int stride, int scale)
static int msmpeg4_pred_dc (MpegEncContext *s, int n, uint16_t **dc_val_ptr, int *dir_ptr)
static void msmpeg4_encode_dc (MpegEncContext *s, int level, int n, int *dir_ptr)
int ff_msmpeg4_decode_init (MpegEncContext *s)
int msmpeg4_decode_picture_header (MpegEncContext *s)
int msmpeg4_decode_ext_header (MpegEncContext *s, int buf_size)
static int msmpeg4v2_decode_motion (MpegEncContext *s, int pred, int f_code)

Variables

static uint32_t v2_dc_lum_table [512][2]
static uint32_t v2_dc_chroma_table [512][2]
uint8_t wmv3_dc_scale_table [32]
static VLC mb_non_intra_vlc [4]
VLC ff_msmp4_mb_i_vlc
VLC ff_msmp4_dc_luma_vlc [2]
VLC ff_msmp4_dc_chroma_vlc [2]
static VLC v2_dc_lum_vlc
static VLC v2_dc_chroma_vlc
static VLC cbpy_vlc
static VLC v2_intra_cbpc_vlc
static VLC v2_mb_type_vlc
static VLC v2_mv_vlc
static VLC v1_intra_cbpc_vlc
static VLC v1_inter_cbpc_vlc
static VLC inter_intra_vlc

Detailed Description

MSMPEG4 backend for ffmpeg encoder and decoder.

Definition in file msmpeg4.c.

Define Documentation

#define CBPY_VLC_BITS   6

Definition at line 42 of file msmpeg4.c.

#define DC_MAX   119

Definition at line 844 of file msmpeg4.c.

Referenced by msmpeg4_decode_dc(), and msmpeg4_encode_dc().

#define DC_VLC_BITS   9

Definition at line 41 of file msmpeg4.c.

#define DEFAULT_INTER_INDEX   3

Definition at line 57 of file msmpeg4.c.

Referenced by msmpeg4v34_decode_mb().

#define II_BITRATE   128*1024

Definition at line 54 of file msmpeg4.c.

Referenced by msmpeg4_decode_picture_header().

#define INTER_INTRA_VLC_BITS   3

Definition at line 43 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), msmpeg4v34_decode_mb(), and wmv2_decode_mb().

#define MB_INTRA_VLC_BITS   9

Definition at line 52 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), msmpeg4v34_decode_mb(), vc9_decode_i_mb(), and wmv2_decode_mb().

#define MB_NON_INTRA_VLC_BITS   9

Definition at line 51 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), msmpeg4v34_decode_mb(), and wmv2_decode_mb().

#define MBAC_BITRATE   50*1024

Definition at line 55 of file msmpeg4.c.

Referenced by msmpeg4_decode_picture_header().

#define MV_VLC_BITS   9

Definition at line 48 of file msmpeg4.c.

#define set_stat ( var   ) 

Definition at line 152 of file msmpeg4.c.

Referenced by msmpeg4_decode_block(), msmpeg4_encode_block(), and msmpeg4v34_decode_mb().

#define TEX_VLC_BITS   9

Definition at line 50 of file msmpeg4.c.

#define V1_INTER_CBPC_VLC_BITS   6

Definition at line 45 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V1_INTRA_CBPC_VLC_BITS   6

Definition at line 44 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_INTRA_CBPC_VLC_BITS   3

Definition at line 46 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_MB_TYPE_VLC_BITS   7

Definition at line 47 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v12_decode_mb().

#define V2_MV_VLC_BITS   9

Definition at line 49 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), and msmpeg4v2_decode_motion().

Function Documentation

static int coded_block_pred ( MpegEncContext *  s,
int  n,
uint8_t **  coded_block_ptr 
) [inline, static]

Definition at line 456 of file msmpeg4.c.

References a, b, MpegEncContext::b8_stride, MpegEncContext::block_index, c, MpegEncContext::coded_block, and pred().

Referenced by msmpeg4v34_decode_mb(), and wmv2_decode_mb().

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static void common_init ( MpegEncContext *  s  )  [static]

Definition at line 156 of file msmpeg4.c.

References MpegEncContext::c_dc_scale_table, MpegEncContext::dsp, ff_init_scantable(), ff_mpeg1_dc_scale_table, ff_mpeg4_c_dc_scale_table, ff_mpeg4_y_dc_scale_table, DSPContext::idct_permutation, init_h263_dc_for_msmpeg4(), MpegEncContext::inter_scantable, MpegEncContext::intra_h_scantable, MpegEncContext::intra_scantable, MpegEncContext::intra_v_scantable, MpegEncContext::msmpeg4_version, old_ff_c_dc_scale_table, old_ff_y_dc_scale_table, wmv1_c_dc_scale_table, wmv1_scantable, wmv1_y_dc_scale_table, wmv3_dc_scale_table, MpegEncContext::workaround_bugs, and MpegEncContext::y_dc_scale_table.

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int ff_msmpeg4_decode_init ( MpegEncContext *  s  ) 

Definition at line 1111 of file msmpeg4.c.

References cbpy_tab, CBPY_VLC_BITS, common_init(), DC_VLC_BITS, MpegEncContext::decode_mb, ff_msmp4_mb_i_table, ff_table0_dc_chroma, ff_table0_dc_lum, ff_table1_dc_chroma, ff_table1_dc_lum, init_rl(), init_vlc(), init_vlc_rl(), INTER_INTRA_VLC_BITS, inter_MCBPC_bits, inter_MCBPC_code, intra_MCBPC_bits, intra_MCBPC_code, MpegEncContext::mb_height, MB_INTRA_VLC_BITS, MB_NON_INTRA_VLC_BITS, MpegEncContext::msmpeg4_version, msmpeg4v12_decode_mb(), msmpeg4v34_decode_mb(), mv_tables, MV_VLC_BITS, mvtab, MVTable::n, rl_table, MpegEncContext::slice_height, table_inter_intra, MVTable::table_mv_bits, MVTable::table_mv_code, V1_INTER_CBPC_VLC_BITS, V1_INTRA_CBPC_VLC_BITS, v2_dc_chroma_table, v2_dc_lum_table, v2_intra_cbpc, V2_INTRA_CBPC_VLC_BITS, v2_mb_type, V2_MB_TYPE_VLC_BITS, V2_MV_VLC_BITS, MVTable::vlc, wmv2_decode_mb(), and wmv2_inter_table.

Referenced by ff_h263_decode_init().

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static int get_dc ( uint8_t *  src,
int  stride,
int  scale 
) [static]

Definition at line 683 of file msmpeg4.c.

Referenced by msmpeg4_pred_dc().

static void init_h263_dc_for_msmpeg4 ( void   )  [static]

Definition at line 1056 of file msmpeg4.c.

References DCtab_chrom, DCtab_lum, v2_dc_chroma_table, and v2_dc_lum_table.

Referenced by common_init().

static int msmpeg4_decode_block ( MpegEncContext *  s,
DCTELEM *  block,
int  n,
int  coded,
const uint8_t *  scantable 
) [inline, static]

Definition at line 1662 of file msmpeg4.c.

References ABS, MpegEncContext::ac_pred, av_log(), AV_LOG_ERROR, MpegEncContext::avctx, MpegEncContext::block_last_index, MpegEncContext::c_dc_scale, CLOSE_READER, MpegEncContext::error_resilience, MpegEncContext::esc3_level_length, MpegEncContext::esc3_run_length, fprintf, MpegEncContext::gb, get_bits_count(), GET_CACHE, GET_RL_VLC, MpegEncContext::inter_intra_pred, MpegEncContext::inter_scantable, MpegEncContext::intra_h_scantable, MpegEncContext::intra_scantable, MpegEncContext::intra_v_scantable, LAST_SKIP_BITS, LAST_SKIP_CACHE, RLTable::max_level, MAX_LEVEL, MAX_RUN, RLTable::max_run, MpegEncContext::mb_intra, MpegEncContext::mb_x, MpegEncContext::mb_y, mpeg4_pred_ac(), msmpeg4_decode_dc(), MpegEncContext::msmpeg4_version, OPEN_READER, ScanTable::permutated, MpegEncContext::qscale, MpegEncContext::rl_chroma_table_index, rl_table, MpegEncContext::rl_table_index, RLTable::rl_vlc, set_stat, SHOW_SBITS, SHOW_UBITS, GetBitContext::size_in_bits, SKIP_BITS, SKIP_CACHE, SKIP_COUNTER, TEX_VLC_BITS, UPDATE_CACHE, and MpegEncContext::y_dc_scale.

Referenced by msmpeg4v12_decode_mb(), msmpeg4v34_decode_mb(), wmv2_decode_inter_block(), and wmv2_decode_mb().

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static int msmpeg4_decode_dc ( MpegEncContext *  s,
int  n,
int *  dir_ptr 
) [static]

Definition at line 1912 of file msmpeg4.c.

References av_log(), AV_LOG_ERROR, MpegEncContext::avctx, MpegEncContext::c_dc_scale, DC_MAX, MpegEncContext::dc_table_index, DC_VLC_BITS, MpegEncContext::gb, get_bits(), get_bits1(), get_vlc2(), msmpeg4_pred_dc(), MpegEncContext::msmpeg4_version, msmpeg4v1_pred_dc(), VLC::table, and MpegEncContext::y_dc_scale.

Referenced by msmpeg4_decode_block().

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int msmpeg4_decode_ext_header ( MpegEncContext *  s,
int  buf_size 
)

Definition at line 1378 of file msmpeg4.c.

References av_log(), AV_LOG_ERROR, MpegEncContext::avctx, MpegEncContext::bit_rate, MpegEncContext::flipflop_rounding, MpegEncContext::gb, get_bits(), get_bits1(), get_bits_count(), and MpegEncContext::msmpeg4_version.

Referenced by ff_h263_decode_frame(), and msmpeg4_decode_picture_header().

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static int msmpeg4_decode_motion ( MpegEncContext *  s,
int *  mx_ptr,
int *  my_ptr 
) [static]

Definition at line 1969 of file msmpeg4.c.

References av_log(), AV_LOG_ERROR, MpegEncContext::avctx, MpegEncContext::gb, get_bits(), get_vlc2(), MpegEncContext::mb_x, MpegEncContext::mb_y, MpegEncContext::mv_table_index, mv_tables, MV_VLC_BITS, MVTable::n, VLC::table, MVTable::table_mvx, MVTable::table_mvy, and MVTable::vlc.

Referenced by msmpeg4v34_decode_mb(), and wmv2_decode_motion().

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int msmpeg4_decode_picture_header ( MpegEncContext *  s  ) 

Definition at line 1209 of file msmpeg4.c.

References av_log(), AV_LOG_DEBUG, AV_LOG_ERROR, MpegEncContext::avctx, MpegEncContext::bit_rate, MpegEncContext::chroma_qscale, MpegEncContext::dc_table_index, AVCodecContext::debug, decode012(), MpegEncContext::esc3_level_length, MpegEncContext::esc3_run_length, FF_DEBUG_PICT_INFO, MpegEncContext::flipflop_rounding, frame_count, MpegEncContext::gb, get_bits(), get_bits1(), MpegEncContext::height, I_TYPE, II_BITRATE, MpegEncContext::inter_intra_pred, MpegEncContext::mb_height, MBAC_BITRATE, msmpeg4_decode_ext_header(), MpegEncContext::msmpeg4_version, MpegEncContext::mv_table_index, MpegEncContext::no_rounding, P_TYPE, MpegEncContext::per_mb_rl_table, MpegEncContext::pict_type, MpegEncContext::qscale, MpegEncContext::rl_chroma_table_index, MpegEncContext::rl_table_index, GetBitContext::size_in_bits, MpegEncContext::slice_height, MpegEncContext::use_skip_mb_code, and MpegEncContext::width.

Referenced by ff_h263_decode_frame().

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static void msmpeg4_encode_block ( MpegEncContext *  s,
DCTELEM *  block,
int  n 
) [inline, static]

Definition at line 918 of file msmpeg4.c.

References MpegEncContext::ac_stats, MpegEncContext::block_last_index, MpegEncContext::esc3_level_length, MpegEncContext::esc3_run_length, get_rl_index(), MpegEncContext::inter_scantable, MpegEncContext::intra_scantable, RLTable::max_level, MAX_LEVEL, RLTable::max_run, MAX_RUN, MpegEncContext::mb_intra, msmpeg4_encode_dc(), MpegEncContext::msmpeg4_version, RLTable::n, MpegEncContext::pb, ScanTable::permutated, put_bits(), MpegEncContext::qscale, MpegEncContext::rl_chroma_table_index, rl_table, MpegEncContext::rl_table_index, set_stat, and RLTable::table_vlc.

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static void msmpeg4_encode_dc ( MpegEncContext *  s,
int  level,
int  n,
int *  dir_ptr 
) [static]

Definition at line 846 of file msmpeg4.c.

References MpegEncContext::c_dc_scale, DC_MAX, MpegEncContext::dc_table_index, ff_table0_dc_chroma, ff_table0_dc_lum, ff_table1_dc_chroma, ff_table1_dc_lum, msmpeg4_pred_dc(), MpegEncContext::msmpeg4_version, msmpeg4v1_pred_dc(), MpegEncContext::pb, put_bits(), v2_dc_chroma_table, v2_dc_lum_table, and MpegEncContext::y_dc_scale.

Referenced by msmpeg4_encode_block().

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static void msmpeg4_memsetw ( short *  tab,
int  val,
int  n 
) [inline, static]

Definition at line 1410 of file msmpeg4.c.

static int msmpeg4_pred_dc ( MpegEncContext *  s,
int  n,
uint16_t **  dc_val_ptr,
int *  dir_ptr 
) [inline, static]

Definition at line 697 of file msmpeg4.c.

References a, b, MpegEncContext::block_index, MpegEncContext::block_wrap, c, MpegEncContext::c_dc_scale, MpegEncContext::current_picture, MpegEncContext::dc_val, MpegEncContext::first_slice_line, get_dc(), MpegEncContext::h263_aic_dir, MpegEncContext::inter_intra_pred, inverse, MpegEncContext::linesize, MpegEncContext::mb_x, MpegEncContext::mb_y, MpegEncContext::msmpeg4_version, MpegEncContext::uvlinesize, and MpegEncContext::y_dc_scale.

Referenced by msmpeg4_decode_dc(), and msmpeg4_encode_dc().

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static int msmpeg4v12_decode_mb ( MpegEncContext *  s,
DCTELEM  block[6][64] 
) [static]

Definition at line 1482 of file msmpeg4.c.

References MpegEncContext::ac_pred, av_log(), AV_LOG_ERROR, MpegEncContext::avctx, MpegEncContext::block, MpegEncContext::block_last_index, CBPY_VLC_BITS, DSPContext::clear_blocks, MpegEncContext::dsp, MpegEncContext::gb, get_bits1(), get_vlc2(), h263_pred_motion(), MpegEncContext::mb_intra, MpegEncContext::mb_skipped, MpegEncContext::mb_x, MpegEncContext::mb_y, msmpeg4_decode_block(), MpegEncContext::msmpeg4_version, msmpeg4v2_decode_motion(), MpegEncContext::mv, MpegEncContext::mv_dir, MV_DIR_FORWARD, MpegEncContext::mv_type, MV_TYPE_16X16, NULL, P_TYPE, MpegEncContext::pict_type, VLC::table, MpegEncContext::use_skip_mb_code, V1_INTER_CBPC_VLC_BITS, V1_INTRA_CBPC_VLC_BITS, V2_INTRA_CBPC_VLC_BITS, and V2_MB_TYPE_VLC_BITS.

Referenced by ff_msmpeg4_decode_init().

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static int msmpeg4v1_pred_dc ( MpegEncContext *  s,
int  n,
int32_t **  dc_val_ptr 
) [inline, static]

Definition at line 668 of file msmpeg4.c.

References MpegEncContext::last_dc.

Referenced by msmpeg4_decode_dc(), and msmpeg4_encode_dc().

static int msmpeg4v2_decode_motion ( MpegEncContext *  s,
int  pred,
int  f_code 
) [static]

Definition at line 1451 of file msmpeg4.c.

References MpegEncContext::gb, get_bits(), get_bits1(), get_vlc2(), shift(), VLC::table, and V2_MV_VLC_BITS.

Referenced by msmpeg4v12_decode_mb().

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static void msmpeg4v2_encode_motion ( MpegEncContext *  s,
int  val 
) [static]

Definition at line 1417 of file msmpeg4.c.

References bits, MpegEncContext::f_code, mvtab, MpegEncContext::pb, and put_bits().

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static int msmpeg4v34_decode_mb ( MpegEncContext *  s,
DCTELEM  block[6][64] 
) [static]

Definition at line 1568 of file msmpeg4.c.

References MpegEncContext::ac_pred, av_log(), AV_LOG_ERROR, MpegEncContext::avctx, MpegEncContext::block, MpegEncContext::block_last_index, DSPContext::clear_blocks, coded_block_pred(), MpegEncContext::current_picture, decode012(), DEFAULT_INTER_INDEX, MpegEncContext::dsp, MpegEncContext::gb, get_bits1(), get_vlc2(), MpegEncContext::h263_aic_dir, h263_pred_motion(), MpegEncContext::inter_intra_pred, INTER_INTRA_VLC_BITS, MpegEncContext::mb_intra, MB_INTRA_VLC_BITS, MB_NON_INTRA_VLC_BITS, MpegEncContext::mb_skipped, MpegEncContext::mb_stride, MB_TYPE_16x16, MB_TYPE_INTRA, MB_TYPE_L0, MB_TYPE_SKIP, MpegEncContext::mb_x, MpegEncContext::mb_y, msmpeg4_decode_block(), msmpeg4_decode_motion(), MpegEncContext::mv, MpegEncContext::mv_dir, MV_DIR_FORWARD, MpegEncContext::mv_type, MV_TYPE_16X16, NULL, P_TYPE, MpegEncContext::per_mb_rl_table, MpegEncContext::pict_type, MpegEncContext::rl_chroma_table_index, MpegEncContext::rl_table_index, set_stat, VLC::table, and MpegEncContext::use_skip_mb_code.

Referenced by ff_msmpeg4_decode_init().

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static int wmv2_decode_mb ( MpegEncContext *  s,
DCTELEM  block[6][64] 
) [static]

Referenced by ff_msmpeg4_decode_init().

Variable Documentation

VLC cbpy_vlc [static]

Definition at line 1047 of file msmpeg4.c.

VLC ff_msmp4_dc_chroma_vlc[2]

Definition at line 1044 of file msmpeg4.c.

VLC ff_msmp4_dc_luma_vlc[2]

Definition at line 1043 of file msmpeg4.c.

VLC ff_msmp4_mb_i_vlc

Definition at line 1042 of file msmpeg4.c.

Referenced by wmv2_decode_mb().

VLC inter_intra_vlc [static]

Definition at line 1053 of file msmpeg4.c.

Referenced by wmv2_decode_mb().

VLC mb_non_intra_vlc[4] [static]

Definition at line 1041 of file msmpeg4.c.

Referenced by wmv2_decode_mb().

VLC v1_inter_cbpc_vlc [static]

Definition at line 1052 of file msmpeg4.c.

VLC v1_intra_cbpc_vlc [static]

Definition at line 1051 of file msmpeg4.c.

uint32_t v2_dc_chroma_table[512][2] [static]

Definition at line 60 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), init_h263_dc_for_msmpeg4(), and msmpeg4_encode_dc().

VLC v2_dc_chroma_vlc [static]

Definition at line 1046 of file msmpeg4.c.

uint32_t v2_dc_lum_table[512][2] [static]

Definition at line 59 of file msmpeg4.c.

Referenced by ff_msmpeg4_decode_init(), init_h263_dc_for_msmpeg4(), and msmpeg4_encode_dc().

VLC v2_dc_lum_vlc [static]

Definition at line 1045 of file msmpeg4.c.

VLC v2_intra_cbpc_vlc [static]

Definition at line 1048 of file msmpeg4.c.

VLC v2_mb_type_vlc [static]

Definition at line 1049 of file msmpeg4.c.

VLC v2_mv_vlc [static]

Definition at line 1050 of file msmpeg4.c.

uint8_t wmv3_dc_scale_table[32]

Definition at line 169 of file vc9data.h.

Referenced by common_init().

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