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Macros | Functions | Variables
snowenc.c File Reference
#include "libavutil/intmath.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "dsputil.h"
#include "internal.h"
#include "snow_dwt.h"
#include "snow.h"
#include "rangecoder.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "h263.h"

Go to the source code of this file.

Macros

#define P_LEFT   P[1]
 
#define P_TOP   P[2]
 
#define P_TOPRIGHT   P[3]
 
#define P_MEDIAN   P[4]
 
#define P_MV1   P[9]
 
#define FLAG_QPEL   1
 
#define OFFSET(x)   offsetof(SnowContext, x)
 
#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 

Functions

static av_cold int encode_init (AVCodecContext *avctx)
 
static int pix_sum (uint8_t *pix, int line_size, int w, int h)
 
static int pix_norm1 (uint8_t *pix, int line_size, int w)
 
static int get_penalty_factor (int lambda, int lambda2, int type)
 
static int encode_q_branch (SnowContext *s, int level, int x, int y)
 
static void encode_q_branch2 (SnowContext *s, int level, int x, int y)
 
static int get_dc (SnowContext *s, int mb_x, int mb_y, int plane_index)
 
static int get_block_bits (SnowContext *s, int x, int y, int w)
 
static int get_block_rd (SnowContext *s, int mb_x, int mb_y, int plane_index, uint8_t(*obmc_edged)[MB_SIZE *2])
 
static int get_4block_rd (SnowContext *s, int mb_x, int mb_y, int plane_index)
 
static int encode_subband_c0run (SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
 
static int encode_subband (SnowContext *s, SubBand *b, const IDWTELEM *src, const IDWTELEM *parent, int stride, int orientation)
 
static av_always_inline int check_block (SnowContext *s, int mb_x, int mb_y, int p[3], int intra, uint8_t(*obmc_edged)[MB_SIZE *2], int *best_rd)
 
static av_always_inline int check_block_inter (SnowContext *s, int mb_x, int mb_y, int p0, int p1, uint8_t(*obmc_edged)[MB_SIZE *2], int *best_rd)
 
static av_always_inline int check_4block_inter (SnowContext *s, int mb_x, int mb_y, int p0, int p1, int ref, int *best_rd)
 
static void iterative_me (SnowContext *s)
 
static void encode_blocks (SnowContext *s, int search)
 
static void quantize (SnowContext *s, SubBand *b, IDWTELEM *dst, DWTELEM *src, int stride, int bias)
 
static void dequantize (SnowContext *s, SubBand *b, IDWTELEM *src, int stride)
 
static void decorrelate (SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
 
static void correlate (SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
 
static void encode_qlogs (SnowContext *s)
 
static void encode_header (SnowContext *s)
 
static void update_last_header_values (SnowContext *s)
 
static int qscale2qlog (int qscale)
 
static int ratecontrol_1pass (SnowContext *s, AVFrame *pict)
 
static void calculate_visual_weight (SnowContext *s, Plane *p)
 
static int encode_frame (AVCodecContext *avctx, AVPacket *pkt, AVFrame *pict, int *got_packet)
 
static av_cold int encode_end (AVCodecContext *avctx)
 

Variables

static const AVOption options []
 
static const AVClass snowenc_class
 
AVCodec ff_snow_encoder
 

Macro Definition Documentation

#define P_LEFT   P[1]

Definition at line 208 of file snowenc.c.

Referenced by encode_q_branch().

#define P_TOP   P[2]

Definition at line 209 of file snowenc.c.

Referenced by encode_q_branch().

#define P_TOPRIGHT   P[3]

Definition at line 210 of file snowenc.c.

Referenced by encode_q_branch().

#define P_MEDIAN   P[4]

Definition at line 211 of file snowenc.c.

Referenced by encode_q_branch().

#define P_MV1   P[9]

Definition at line 212 of file snowenc.c.

#define FLAG_QPEL   1

Definition at line 213 of file snowenc.c.

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

Definition at line 1864 of file snowenc.c.

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1865 of file snowenc.c.

Function Documentation

static av_cold int encode_init ( AVCodecContext *  avctx)
static

Definition at line 36 of file snowenc.c.

static int pix_sum ( uint8_t *  pix,
int  line_size,
int  w,
int  h 
)
static

Definition at line 151 of file snowenc.c.

Referenced by encode_q_branch().

static int pix_norm1 ( uint8_t *  pix,
int  line_size,
int  w 
)
static

Definition at line 167 of file snowenc.c.

Referenced by encode_q_branch().

static int get_penalty_factor ( int  lambda,
int  lambda2,
int  type 
)
inlinestatic

Definition at line 183 of file snowenc.c.

Referenced by encode_q_branch(), get_4block_rd(), and get_block_rd().

static int encode_q_branch ( SnowContext *  s,
int  level,
int  x,
int  y 
)
static

Definition at line 215 of file snowenc.c.

Referenced by encode_blocks(), and iterative_me().

static void encode_q_branch2 ( SnowContext *  s,
int  level,
int  x,
int  y 
)
static

Definition at line 444 of file snowenc.c.

Referenced by encode_blocks().

static int get_dc ( SnowContext *  s,
int  mb_x,
int  mb_y,
int  plane_index 
)
static

Definition at line 500 of file snowenc.c.

Referenced by iterative_me().

static int get_block_bits ( SnowContext *  s,
int  x,
int  y,
int  w 
)
inlinestatic

Definition at line 558 of file snowenc.c.

Referenced by get_4block_rd(), and get_block_rd().

static int get_block_rd ( SnowContext *  s,
int  mb_x,
int  mb_y,
int  plane_index,
uint8_t(*)  obmc_edged[MB_SIZE *2] 
)
static

Definition at line 596 of file snowenc.c.

Referenced by check_block().

static int get_4block_rd ( SnowContext *  s,
int  mb_x,
int  mb_y,
int  plane_index 
)
static

Definition at line 697 of file snowenc.c.

Referenced by check_4block_inter(), and iterative_me().

static int encode_subband_c0run ( SnowContext *  s,
SubBand *  b,
const IDWTELEM *  src,
const IDWTELEM *  parent,
int  stride,
int  orientation 
)
static

Definition at line 766 of file snowenc.c.

Referenced by encode_subband().

static int encode_subband ( SnowContext *  s,
SubBand *  b,
const IDWTELEM *  src,
const IDWTELEM *  parent,
int  stride,
int  orientation 
)
static

Definition at line 886 of file snowenc.c.

Referenced by encode_frame().

static av_always_inline int check_block ( SnowContext *  s,
int  mb_x,
int  mb_y,
int  p[3],
int  intra,
uint8_t(*)  obmc_edged[MB_SIZE *2],
int *  best_rd 
)
static

Definition at line 893 of file snowenc.c.

Referenced by check_block_inter(), and iterative_me().

static av_always_inline int check_block_inter ( SnowContext *  s,
int  mb_x,
int  mb_y,
int  p0,
int  p1,
uint8_t(*)  obmc_edged[MB_SIZE *2],
int *  best_rd 
)
static

Definition at line 934 of file snowenc.c.

Referenced by iterative_me().

static av_always_inline int check_4block_inter ( SnowContext *  s,
int  mb_x,
int  mb_y,
int  p0,
int  p1,
int  ref,
int *  best_rd 
)
static

Definition at line 939 of file snowenc.c.

Referenced by iterative_me().

static void iterative_me ( SnowContext *  s)
static

Definition at line 985 of file snowenc.c.

Referenced by encode_blocks().

static void encode_blocks ( SnowContext *  s,
int  search 
)
static

Definition at line 1209 of file snowenc.c.

Referenced by encode_frame().

static void quantize ( SnowContext *  s,
SubBand *  b,
IDWTELEM *  dst,
DWTELEM *  src,
int  stride,
int  bias 
)
static

Definition at line 1231 of file snowenc.c.

Referenced by encode_frame().

static void dequantize ( SnowContext *  s,
SubBand *  b,
IDWTELEM *  src,
int  stride 
)
static

Definition at line 1292 of file snowenc.c.

Referenced by encode_frame().

static void decorrelate ( SnowContext *  s,
SubBand *  b,
IDWTELEM *  src,
int  stride,
int  inverse,
int  use_median 
)
static

Definition at line 1314 of file snowenc.c.

Referenced by encode_frame(), and ratecontrol_1pass().

static void correlate ( SnowContext *  s,
SubBand *  b,
IDWTELEM *  src,
int  stride,
int  inverse,
int  use_median 
)
static

Definition at line 1338 of file snowenc.c.

Referenced by encode_frame().

static void encode_qlogs ( SnowContext *  s)
static

Definition at line 1362 of file snowenc.c.

Referenced by encode_header().

static void encode_header ( SnowContext *  s)
static

Definition at line 1375 of file snowenc.c.

Referenced by encode_frame().

static void update_last_header_values ( SnowContext *  s)
static

Definition at line 1448 of file snowenc.c.

Referenced by encode_frame().

static int qscale2qlog ( int  qscale)
static

< 64 > 60

Definition at line 1468 of file snowenc.c.

Referenced by encode_frame(), and ratecontrol_1pass().

static int ratecontrol_1pass ( SnowContext *  s,
AVFrame *  pict 
)
static

Definition at line 1473 of file snowenc.c.

Referenced by encode_frame().

static void calculate_visual_weight ( SnowContext *  s,
Plane *  p 
)
static

Definition at line 1525 of file snowenc.c.

Referenced by encode_frame().

static int encode_frame ( AVCodecContext *  avctx,
AVPacket *  pkt,
AVFrame *  pict,
int *  got_packet 
)
static

Definition at line 1551 of file snowenc.c.

static av_cold int encode_end ( AVCodecContext *  avctx)
static

Definition at line 1852 of file snowenc.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{ "memc_only", "Only do ME/MC (I frames -> ref, P frame -> ME+MC).", OFFSET(memc_only), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "no_bitstream", "Skip final bitstream writeout.", OFFSET(no_bitstream), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ NULL },
}

Definition at line 1866 of file snowenc.c.

const AVClass snowenc_class
static
Initial value:
= {
.class_name = "snow encoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
}

Definition at line 1872 of file snowenc.c.

AVCodec ff_snow_encoder
Initial value:
= {
.name = "snow",
.long_name = NULL_IF_CONFIG_SMALL("Snow"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_SNOW,
.priv_data_size = sizeof(SnowContext),
.init = encode_init,
.encode2 = encode_frame,
.close = encode_end,
.pix_fmts = (const enum AVPixelFormat[]){
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_GRAY8,
AV_PIX_FMT_NONE
},
.priv_class = &snowenc_class,
}

Definition at line 1879 of file snowenc.c.

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