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mpegvideo_enc.c File Reference

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

#include <stdint.h>
#include "libavutil/internal.h"
#include "libavutil/intmath.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
#include "libavutil/opt.h"
#include "libavutil/timer.h"
#include "avcodec.h"
#include "dct.h"
#include "idctdsp.h"
#include "mpeg12.h"
#include "mpegvideo.h"
#include "h261.h"
#include "h263.h"
#include "mjpegenc_common.h"
#include "mathops.h"
#include "mpegutils.h"
#include "mjpegenc.h"
#include "msmpeg4.h"
#include "pixblockdsp.h"
#include "qpeldsp.h"
#include "faandct.h"
#include "thread.h"
#include "aandcttab.h"
#include "flv.h"
#include "mpeg4video.h"
#include "internal.h"
#include "bytestream.h"
#include <limits.h>
#include "sp5x.h"

Go to the source code of this file.

Macros

#define QUANT_BIAS_SHIFT   8
 
#define QMAT_SHIFT_MMX   16
 
#define QMAT_SHIFT   21
 
#define COPY(a)   dst->a= src->a
 
#define MERGE(field)   dst->field += src->field; src->field=0
 
#define OFFSET(x)   offsetof(MpegEncContext, x)
 
#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 

Functions

static int encode_picture (MpegEncContext *s, int picture_number)
 
static int dct_quantize_refine (MpegEncContext *s, int16_t *block, int16_t *weight, int16_t *orig, int n, int qscale)
 
static int sse_mb (MpegEncContext *s)
 
static void denoise_dct_c (MpegEncContext *s, int16_t *block)
 
static int dct_quantize_trellis_c (MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
 
void ff_convert_matrix (MpegEncContext *s, int(*qmat)[64], uint16_t(*qmat16)[2][64], const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra)
 
static void update_qscale (MpegEncContext *s)
 
void ff_write_quant_matrix (PutBitContext *pb, uint16_t *matrix)
 
void ff_init_qscale_tab (MpegEncContext *s)
 init s->current_picture.qscale_table from s->lambda_table
 
static void update_duplicate_context_after_me (MpegEncContext *dst, MpegEncContext *src)
 
static void mpv_encode_defaults (MpegEncContext *s)
 Set the given MpegEncContext to defaults for encoding.
 
av_cold int ff_dct_encode_init (MpegEncContext *s)
 
av_cold int ff_mpv_encode_init (AVCodecContext *avctx)
 
av_cold int ff_mpv_encode_end (AVCodecContext *avctx)
 
static int get_sae (uint8_t *src, int ref, int stride)
 
static int get_intra_count (MpegEncContext *s, uint8_t *src, uint8_t *ref, int stride)
 
static int load_input_picture (MpegEncContext *s, const AVFrame *pic_arg)
 
static int skip_check (MpegEncContext *s, Picture *p, Picture *ref)
 
static int encode_frame (AVCodecContext *c, AVFrame *frame)
 
static int estimate_best_b_count (MpegEncContext *s)
 
static int select_input_picture (MpegEncContext *s)
 
static void frame_end (MpegEncContext *s)
 
static void update_noise_reduction (MpegEncContext *s)
 
static int frame_start (MpegEncContext *s)
 
int ff_mpv_encode_picture (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic_arg, int *got_packet)
 
static void dct_single_coeff_elimination (MpegEncContext *s, int n, int threshold)
 
static void clip_coeffs (MpegEncContext *s, int16_t *block, int last_index)
 
static void get_visual_weight (int16_t *weight, uint8_t *ptr, int stride)
 
static av_always_inline void encode_mb_internal (MpegEncContext *s, int motion_x, int motion_y, int mb_block_height, int mb_block_width, int mb_block_count)
 
static av_always_inline void encode_mb (MpegEncContext *s, int motion_x, int motion_y)
 
static void copy_context_before_encode (MpegEncContext *d, MpegEncContext *s, int type)
 
static void copy_context_after_encode (MpegEncContext *d, MpegEncContext *s, int type)
 
static void encode_mb_hq (MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type, PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2], int *dmin, int *next_block, int motion_x, int motion_y)
 
static int sse (MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride)
 
static int pre_estimate_motion_thread (AVCodecContext *c, void *arg)
 
static int estimate_motion_thread (AVCodecContext *c, void *arg)
 
static int mb_var_thread (AVCodecContext *c, void *arg)
 
static void write_slice_end (MpegEncContext *s)
 
static void write_mb_info (MpegEncContext *s)
 
static void update_mb_info (MpegEncContext *s, int startcode)
 
static int encode_thread (AVCodecContext *c, void *arg)
 
static void merge_context_after_me (MpegEncContext *dst, MpegEncContext *src)
 
static void merge_context_after_encode (MpegEncContext *dst, MpegEncContext *src)
 
static int estimate_qp (MpegEncContext *s, int dry_run)
 
static void set_frame_distances (MpegEncContext *s)
 
static void build_basis (uint8_t *perm)
 
int ff_dct_quantize_c (MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow)
 

Variables

static uint8_t default_mv_penalty [MAX_FCODE+1][MAX_MV *2+1]
 
static uint8_t default_fcode_tab [MAX_MV *2+1]
 
const AVOption ff_mpv_generic_options []
 
static int16_t basis [64][64]
 
static const AVOption h263_options []
 
static const AVClass h263_class
 
AVCodec ff_h263_encoder
 
static const AVOption h263p_options []
 
static const AVClass h263p_class
 
AVCodec ff_h263p_encoder
 
AVCodec ff_msmpeg4v2_encoder
 
AVCodec ff_msmpeg4v3_encoder
 
AVCodec ff_wmv1_encoder
 

Detailed Description

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

Definition in file mpegvideo_enc.c.

Macro Definition Documentation

#define QUANT_BIAS_SHIFT   8

Definition at line 62 of file mpegvideo_enc.c.

Referenced by ff_convert_matrix(), ff_dct_quantize_c(), and ff_mpv_encode_init().

#define QMAT_SHIFT_MMX   16

Definition at line 64 of file mpegvideo_enc.c.

Referenced by ff_convert_matrix().

#define QMAT_SHIFT   21

Definition at line 65 of file mpegvideo_enc.c.

Referenced by dct_quantize_trellis_c(), ff_convert_matrix(), and ff_dct_quantize_c().

#define COPY (   a)    dst->a= src->a
#define MERGE (   field)    dst->field += src->field; src->field=0

Definition at line 3383 of file mpegvideo_enc.c.

Referenced by merge_context_after_encode(), and merge_context_after_me().

#define OFFSET (   x)    offsetof(MpegEncContext, x)

Definition at line 4531 of file mpegvideo_enc.c.

Definition at line 4532 of file mpegvideo_enc.c.

Function Documentation

static int encode_picture ( MpegEncContext s,
int  picture_number 
)
static

Definition at line 3473 of file mpegvideo_enc.c.

Referenced by ff_mpv_encode_picture().

static int dct_quantize_refine ( MpegEncContext s,
int16_t *  block,
int16_t *  weight,
int16_t *  orig,
int  n,
int  qscale 
)
static

Definition at line 4075 of file mpegvideo_enc.c.

Referenced by encode_mb_internal().

static int sse_mb ( MpegEncContext s)
static

Definition at line 2567 of file mpegvideo_enc.c.

Referenced by encode_mb_hq().

static void denoise_dct_c ( MpegEncContext s,
int16_t *  block 
)
static

Definition at line 3737 of file mpegvideo_enc.c.

Referenced by ff_dct_encode_init().

static int dct_quantize_trellis_c ( MpegEncContext s,
int16_t *  block,
int  n,
int  qscale,
int *  overflow 
)
static

Definition at line 3761 of file mpegvideo_enc.c.

Referenced by ff_dct_encode_init().

void ff_convert_matrix ( MpegEncContext s,
int(*)  qmat[64],
uint16_t(*)  qmat16[2][64],
const uint16_t *  quant_matrix,
int  bias,
int  qmin,
int  qmax,
int  intra 
)

Definition at line 81 of file mpegvideo_enc.c.

Referenced by dnxhd_init_qmat(), encode_picture(), and ff_mpv_encode_init().

static void update_qscale ( MpegEncContext s)
inlinestatic

Definition at line 160 of file mpegvideo_enc.c.

Referenced by encode_mb_internal(), encode_picture(), and estimate_qp().

void ff_write_quant_matrix ( PutBitContext pb,
uint16_t *  matrix 
)

Definition at line 170 of file mpegvideo_enc.c.

Referenced by mpeg1_encode_sequence_header(), and mpeg4_encode_vol_header().

void ff_init_qscale_tab ( MpegEncContext s)

init s->current_picture.qscale_table from s->lambda_table

Definition at line 186 of file mpegvideo_enc.c.

Referenced by estimate_qp(), and ff_clean_h263_qscales().

static void update_duplicate_context_after_me ( MpegEncContext dst,
MpegEncContext src 
)
static

Definition at line 199 of file mpegvideo_enc.c.

Referenced by encode_picture().

static void mpv_encode_defaults ( MpegEncContext s)
static

Set the given MpegEncContext to defaults for encoding.

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

Definition at line 222 of file mpegvideo_enc.c.

Referenced by ff_mpv_encode_init().

av_cold int ff_dct_encode_init ( MpegEncContext s)

Definition at line 237 of file mpegvideo_enc.c.

Referenced by dnxhd_encode_init(), and ff_mpv_encode_init().

av_cold int ff_mpv_encode_init ( AVCodecContext avctx)

Definition at line 255 of file mpegvideo_enc.c.

Referenced by encode_init(), and wmv2_encode_init().

av_cold int ff_mpv_encode_end ( AVCodecContext avctx)

Definition at line 1001 of file mpegvideo_enc.c.

Referenced by ff_mpv_encode_init(), and mpeg12_class().

static int get_sae ( uint8_t src,
int  ref,
int  stride 
)
static

Definition at line 1039 of file mpegvideo_enc.c.

Referenced by get_intra_count().

static int get_intra_count ( MpegEncContext s,
uint8_t src,
uint8_t ref,
int  stride 
)
static

Definition at line 1053 of file mpegvideo_enc.c.

Referenced by select_input_picture().

static int load_input_picture ( MpegEncContext s,
const AVFrame pic_arg 
)
static

Definition at line 1077 of file mpegvideo_enc.c.

Referenced by ff_mpv_encode_picture().

static int skip_check ( MpegEncContext s,
Picture p,
Picture ref 
)
static

Definition at line 1219 of file mpegvideo_enc.c.

Referenced by select_input_picture().

static int encode_frame ( AVCodecContext c,
AVFrame frame 
)
static

Definition at line 1260 of file mpegvideo_enc.c.

static int estimate_best_b_count ( MpegEncContext s)
static

Definition at line 1275 of file mpegvideo_enc.c.

Referenced by select_input_picture().

static int select_input_picture ( MpegEncContext s)
static

Definition at line 1391 of file mpegvideo_enc.c.

Referenced by ff_mpv_encode_picture().

static void frame_end ( MpegEncContext s)
static
static void update_noise_reduction ( MpegEncContext s)
static

Definition at line 1609 of file mpegvideo_enc.c.

Referenced by frame_start().

static int frame_start ( MpegEncContext s)
static
int ff_mpv_encode_picture ( AVCodecContext avctx,
AVPacket pkt,
const AVFrame pic_arg,
int *  got_packet 
)

Definition at line 1702 of file mpegvideo_enc.c.

Referenced by amv_encode_picture(), and mpeg12_class().

static void dct_single_coeff_elimination ( MpegEncContext s,
int  n,
int  threshold 
)
inlinestatic

Definition at line 1927 of file mpegvideo_enc.c.

Referenced by encode_mb_internal().

static void clip_coeffs ( MpegEncContext s,
int16_t *  block,
int  last_index 
)
inlinestatic

Definition at line 1983 of file mpegvideo_enc.c.

Referenced by encode_mb_internal().

static void get_visual_weight ( int16_t *  weight,
uint8_t ptr,
int  stride 
)
static

Definition at line 2017 of file mpegvideo_enc.c.

Referenced by encode_mb_internal().

static av_always_inline void encode_mb_internal ( MpegEncContext s,
int  motion_x,
int  motion_y,
int  mb_block_height,
int  mb_block_width,
int  mb_block_count 
)
static

Definition at line 2041 of file mpegvideo_enc.c.

Referenced by encode_mb().

static av_always_inline void encode_mb ( MpegEncContext s,
int  motion_x,
int  motion_y 
)
static

Definition at line 2421 of file mpegvideo_enc.c.

Referenced by encode_mb_hq(), and encode_thread().

static void copy_context_before_encode ( MpegEncContext d,
MpegEncContext s,
int  type 
)
inlinestatic

Definition at line 2428 of file mpegvideo_enc.c.

Referenced by encode_mb_hq(), and encode_thread().

static void copy_context_after_encode ( MpegEncContext d,
MpegEncContext s,
int  type 
)
inlinestatic

Definition at line 2456 of file mpegvideo_enc.c.

Referenced by encode_mb_hq(), and encode_thread().

static void encode_mb_hq ( MpegEncContext s,
MpegEncContext backup,
MpegEncContext best,
int  type,
PutBitContext  pb[2],
PutBitContext  pb2[2],
PutBitContext  tex_pb[2],
int *  dmin,
int *  next_block,
int  motion_x,
int  motion_y 
)
inlinestatic

Definition at line 2495 of file mpegvideo_enc.c.

Referenced by encode_thread().

static int sse ( MpegEncContext s,
uint8_t src1,
uint8_t src2,
int  w,
int  h,
int  stride 
)
static
static int pre_estimate_motion_thread ( AVCodecContext c,
void arg 
)
static

Definition at line 2590 of file mpegvideo_enc.c.

Referenced by encode_picture().

static int estimate_motion_thread ( AVCodecContext c,
void arg 
)
static

Definition at line 2609 of file mpegvideo_enc.c.

Referenced by encode_picture().

static int mb_var_thread ( AVCodecContext c,
void arg 
)
static

Definition at line 2636 of file mpegvideo_enc.c.

Referenced by encode_picture().

static void write_slice_end ( MpegEncContext s)
static

Definition at line 2661 of file mpegvideo_enc.c.

Referenced by encode_thread().

static void write_mb_info ( MpegEncContext s)
static

Definition at line 2679 of file mpegvideo_enc.c.

Referenced by update_mb_info().

static void update_mb_info ( MpegEncContext s,
int  startcode 
)
static

Definition at line 2699 of file mpegvideo_enc.c.

Referenced by encode_thread().

static int encode_thread ( AVCodecContext c,
void arg 
)
static

Definition at line 2722 of file mpegvideo_enc.c.

Referenced by encode_picture().

static void merge_context_after_me ( MpegEncContext dst,
MpegEncContext src 
)
static

Definition at line 3384 of file mpegvideo_enc.c.

Referenced by encode_picture().

static void merge_context_after_encode ( MpegEncContext dst,
MpegEncContext src 
)
static

Definition at line 3390 of file mpegvideo_enc.c.

Referenced by encode_picture().

static int estimate_qp ( MpegEncContext s,
int  dry_run 
)
static

Definition at line 3422 of file mpegvideo_enc.c.

Referenced by encode_picture().

static void set_frame_distances ( MpegEncContext s)
static

Definition at line 3459 of file mpegvideo_enc.c.

Referenced by encode_picture().

static void build_basis ( uint8_t perm)
static

Definition at line 4056 of file mpegvideo_enc.c.

Referenced by dct_quantize_refine().

int ff_dct_quantize_c ( MpegEncContext s,
int16_t *  block,
int  n,
int  qscale,
int *  overflow 
)

Definition at line 4450 of file mpegvideo_enc.c.

Referenced by dnxhd_encode_init(), encode_mb_internal(), and ff_dct_encode_init().

Variable Documentation

uint8_t default_mv_penalty[MAX_FCODE+1][MAX_MV *2+1]
static

Definition at line 73 of file mpegvideo_enc.c.

Referenced by mpv_encode_defaults().

uint8_t default_fcode_tab[MAX_MV *2+1]
static

Definition at line 74 of file mpegvideo_enc.c.

Referenced by mpv_encode_defaults().

const AVOption ff_mpv_generic_options[]
Initial value:
= {
{ NULL },
}

Definition at line 76 of file mpegvideo_enc.c.

int16_t basis[64][64]
static

Definition at line 4054 of file mpegvideo_enc.c.

Referenced by add_8x8basis_TMPL(), and try_8x8basis_TMPL().

const AVOption h263_options[]
static
Initial value:
= {
{ "obmc", "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "structured_slices","Write slice start position at every GOB header instead of just GOB number.", OFFSET(h263_slice_structured), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE},
{ "mb_info", "emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size", OFFSET(mb_info), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
{ NULL },
}

Definition at line 4533 of file mpegvideo_enc.c.

const AVClass h263_class
static
Initial value:
= {
.class_name = "H.263 encoder",
.item_name = av_default_item_name,
.option = h263_options,
}

Definition at line 4541 of file mpegvideo_enc.c.

AVCodec ff_h263_encoder
Initial value:
= {
.name = "h263",
.long_name = NULL_IF_CONFIG_SMALL("H.263 / H.263-1996"),
.priv_data_size = sizeof(MpegEncContext),
.pix_fmts= (const enum AVPixelFormat[]){AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE},
.priv_class = &h263_class,
}

Definition at line 4548 of file mpegvideo_enc.c.

const AVOption h263p_options[]
static
Initial value:
= {
{ "umv", "Use unlimited motion vectors.", OFFSET(umvplus), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "aiv", "Use alternative inter VLC.", OFFSET(alt_inter_vlc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "obmc", "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "structured_slices", "Write slice start position at every GOB header instead of just GOB number.", OFFSET(h263_slice_structured), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE},
{ NULL },
}

Definition at line 4561 of file mpegvideo_enc.c.

const AVClass h263p_class
static
Initial value:
= {
.class_name = "H.263p encoder",
.item_name = av_default_item_name,
.option = h263p_options,
}

Definition at line 4569 of file mpegvideo_enc.c.

AVCodec ff_h263p_encoder
Initial value:
= {
.name = "h263p",
.long_name = NULL_IF_CONFIG_SMALL("H.263+ / H.263-1998 / H.263 version 2"),
.priv_data_size = sizeof(MpegEncContext),
.capabilities = CODEC_CAP_SLICE_THREADS,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
.priv_class = &h263p_class,
}

Definition at line 4576 of file mpegvideo_enc.c.

AVCodec ff_msmpeg4v2_encoder
Initial value:
= {
.name = "msmpeg4v2",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
.priv_data_size = sizeof(MpegEncContext),
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
.priv_class = &msmpeg4v2_class,
}

Definition at line 4592 of file mpegvideo_enc.c.

AVCodec ff_msmpeg4v3_encoder
Initial value:
= {
.name = "msmpeg4",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
.priv_data_size = sizeof(MpegEncContext),
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
.priv_class = &msmpeg4v3_class,
}

Definition at line 4607 of file mpegvideo_enc.c.

AVCodec ff_wmv1_encoder
Initial value:
= {
.name = "wmv1",
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
.priv_data_size = sizeof(MpegEncContext),
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
.priv_class = &wmv1_class,
}

Definition at line 4622 of file mpegvideo_enc.c.