ffv1enc.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/crc.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "encode.h"
#include "codec_internal.h"
#include "put_bits.h"
#include "put_golomb.h"
#include "rangecoder.h"
#include "mathops.h"
#include "ffv1.h"
#include "ffv1enc_template.c"

Go to the source code of this file.

Macros
#define	put_rac(C, S, B)
#define	TYPE   int16_t
#define	RENAME(name)   name
#define	TYPE   int32_t
#define	RENAME(name)   name ## 32
#define	COST(old, new)
#define	COST2(old, new)   COST(old, new) + COST(256 - (old), 256 - (new))
#define	STATS_OUT_SIZE   1024 * 1024 * 6
#define	NB_Y_COEFF   15
#define	OFFSET(x)   offsetof(FFV1Context, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
static void	find_best_state (uint8_t best_state[256][256], const uint8_t one_state[256])
static av_always_inline av_flatten void	put_symbol_inline (RangeCoder *c, uint8_t *state, int v, int is_signed, uint64_t rc_stat[256][2], uint64_t rc_stat2[32][2])
static av_noinline void	put_symbol (RangeCoder *c, uint8_t *state, int v, int is_signed)
static void	put_vlc_symbol (PutBitContext *pb, VlcState *const state, int v, int bits)
static int	encode_plane (FFV1Context *s, const uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
static void	write_quant_table (RangeCoder *c, int16_t *quant_table)
static void	write_quant_tables (RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
static int	contains_non_128 (uint8_t(*initial_state)[CONTEXT_SIZE], int nb_contexts)
static void	write_header (FFV1Context *f)
static int	write_extradata (FFV1Context *f)
static int	sort_stt (FFV1Context *s, uint8_t stt[256])
static av_cold int	encode_init (AVCodecContext *avctx)
static void	encode_slice_header (FFV1Context *f, FFV1Context *fs)
static void	choose_rct_params (FFV1Context *fs, const uint8_t *src[3], const int stride[3], int w, int h)
static int	encode_slice (AVCodecContext *c, void *arg)
static int	encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)

Variables
static const int8_t	quant5_10bit [256]
static const int8_t	quant5 [256]
static const int8_t	quant9_10bit [256]
static const int8_t	quant11 [256]
static const uint8_t	ver2_state [256]
static const AVOption	options []
static const AVClass	ffv1_class
const FFCodec	ff_ffv1_encoder

Detailed Description

FF Video Codec 1 (a lossless codec) encoder

Definition in file ffv1enc.c.

Macro Definition Documentation

put_rac

#define put_rac	(		C,
			S,
			B
	)

Value:

    do {                                        \
        if (rc_stat) {                          \
            rc_stat[*(S)][B]++;                 \
            rc_stat2[(S) - state][B]++;         \
        }                                       \
        put_rac(C, S, B);                       \
    } while (0)

TYPE [1/2]

#define TYPE   int16_t

Definition at line 269 of file ffv1enc.c.

RENAME [1/2]

#define RENAME

(

name

)

name

Definition at line 270 of file ffv1enc.c.

TYPE [2/2]

#define TYPE   int32_t

Definition at line 269 of file ffv1enc.c.

RENAME [2/2]

#define RENAME

(

name

)

name ## 32

Definition at line 270 of file ffv1enc.c.

COST

#define COST	(		old,
			new
	)

Value:

    s->rc_stat[old][0] * -log2((256 - (new)) / 256.0) +     \
    s->rc_stat[old][1] * -log2((new)         / 256.0)

COST2

#define COST2	(		old,
			new
	)		COST(old, new) + COST(256 - (old), 256 - (new))

STATS_OUT_SIZE

#define STATS_OUT_SIZE   1024 * 1024 * 6

NB_Y_COEFF

#define NB_Y_COEFF   15

OFFSET

#define OFFSET

(

x

)

offsetof(FFV1Context, x)

Definition at line 1244 of file ffv1enc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1245 of file ffv1enc.c.

Function Documentation

find_best_state()

static void find_best_state ( uint8_t  best_state[256][256], const uint8_t  one_state[256]  )

static

Definition at line 139 of file ffv1enc.c.

Referenced by encode_init().

put_symbol_inline()

static av_always_inline av_flatten void put_symbol_inline ( RangeCoder *  c, uint8_t *  state, int  v, int  is_signed, uint64_t  rc_stat[256][2], uint64_t  rc_stat2[32][2]  )

static

Definition at line 184 of file ffv1enc.c.

Referenced by encode_line(), and put_symbol().

put_symbol()

static av_noinline void put_symbol ( RangeCoder *  c, uint8_t *  state, int  v, int  is_signed  )

static

Definition at line 232 of file ffv1enc.c.

Referenced by encode_slice_header(), write_extradata(), write_header(), and write_quant_table().

put_vlc_symbol()

static void put_vlc_symbol ( PutBitContext *  pb, VlcState *const  state, int  v, int  bits  )

inlinestatic

Definition at line 239 of file ffv1enc.c.

Referenced by encode_line().

encode_plane()

static int encode_plane ( FFV1Context *  s, const uint8_t *  src, int  w, int  h, int  stride, int  plane_index, int  pixel_stride  )

static

Definition at line 273 of file ffv1enc.c.

Referenced by encode_slice().

write_quant_table()

static void write_quant_table ( RangeCoder *  c, int16_t *  quant_table  )

static

Definition at line 311 of file ffv1enc.c.

Referenced by write_quant_tables().

write_quant_tables()

static void write_quant_tables ( RangeCoder *  c, int16_t  quant_table[MAX_CONTEXT_INPUTS][256]  )

static

Definition at line 326 of file ffv1enc.c.

Referenced by write_extradata(), and write_header().

contains_non_128()

static int contains_non_128 ( uint8_t(*)  initial_state[CONTEXT_SIZE], int  nb_contexts  )

static

Definition at line 334 of file ffv1enc.c.

Referenced by write_extradata().

write_header()

static void write_header ( FFV1Context *  f )

static

Definition at line 346 of file ffv1enc.c.

Referenced by encode_frame(), and segment_start().

write_extradata()

static int write_extradata ( FFV1Context *  f )

static

Definition at line 393 of file ffv1enc.c.

Referenced by encode_init().

sort_stt()

static int sort_stt ( FFV1Context *  s, uint8_t  stt[256]  )

static

Definition at line 466 of file ffv1enc.c.

Referenced by encode_init().

encode_init()

static av_cold int encode_init ( AVCodecContext *  avctx )

static

Definition at line 514 of file ffv1enc.c.

encode_slice_header()

static void encode_slice_header ( FFV1Context *  f, FFV1Context *  fs  )

static

Definition at line 908 of file ffv1enc.c.

Referenced by encode_slice().

choose_rct_params()

static void choose_rct_params ( FFV1Context *  fs, const uint8_t *  src[3], const int  stride[3], int  w, int  h  )

static

Definition at line 941 of file ffv1enc.c.

Referenced by encode_slice().

encode_slice()

static int encode_slice ( AVCodecContext *  c, void *  arg  )

static

Definition at line 1023 of file ffv1enc.c.

Referenced by encode_frame().

encode_frame()

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

static

Definition at line 1099 of file ffv1enc.c.

Variable Documentation

quant5_10bit

const int8_t quant5_10bit[256]

static

Initial value:

= {
     0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  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,  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, -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, -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, -0, -0, -0, -0, -0, -0, -0, -0, -0, -0,
}

Definition at line 44 of file ffv1enc.c.

Referenced by encode_init().

quant5

const int8_t quant5[256]

static

Initial value:

= {
     0,  1,  1,  1,  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, -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, -1, -1, -1,
}

Definition at line 63 of file ffv1enc.c.

Referenced by encode_init().

quant9_10bit

const int8_t quant9_10bit[256]

static

Initial value:

= {
     0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,
     2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  3,  3,  3,  3,  3,
     3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,
     3,  3,  3,  3,  3,  3,  3,  3,  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, -4, -4, -4, -4, -4, -4, -4, -4,
    -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3,
    -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3,
    -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
    -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -0, -0, -0, -0,
}

Definition at line 82 of file ffv1enc.c.

Referenced by encode_init().

quant11

const int8_t quant11[256]

static

Initial value:

= {
     0,  1,  2,  2,  2,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,
     4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,
     4,  4,  4,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
     5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,  5,
    -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
    -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
    -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
    -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
    -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5,
    -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -4, -4,
    -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4,
    -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -1,
}

Definition at line 101 of file ffv1enc.c.

Referenced by encode_init().

ver2_state

const uint8_t ver2_state[256]

static

Initial value:

= {
      0,  10,  10,  10,  10,  16,  16,  16, 28,   16,  16,  29,  42,  49,  20,  49,
     59,  25,  26,  26,  27,  31,  33,  33, 33,   34,  34,  37,  67,  38,  39,  39,
     40,  40,  41,  79,  43,  44,  45,  45, 48,   48,  64,  50,  51,  52,  88,  52,
     53,  74,  55,  57,  58,  58,  74,  60, 101,  61,  62,  84,  66,  66,  68,  69,
     87,  82,  71,  97,  73,  73,  82,  75, 111,  77,  94,  78,  87,  81,  83,  97,
     85,  83,  94,  86,  99,  89,  90,  99, 111,  92,  93,  134, 95,  98, 105,  98,
    105, 110, 102, 108, 102, 118, 103, 106, 106, 113, 109, 112, 114, 112, 116, 125,
    115, 116, 117, 117, 126, 119, 125, 121, 121, 123, 145, 124, 126, 131, 127, 129,
    165, 130, 132, 138, 133, 135, 145, 136, 137, 139, 146, 141, 143, 142, 144, 148,
    147, 155, 151, 149, 151, 150, 152, 157, 153, 154, 156, 168, 158, 162, 161, 160,
    172, 163, 169, 164, 166, 184, 167, 170, 177, 174, 171, 173, 182, 176, 180, 178,
    175, 189, 179, 181, 186, 183, 192, 185, 200, 187, 191, 188, 190, 197, 193, 196,
    197, 194, 195, 196, 198, 202, 199, 201, 210, 203, 207, 204, 205, 206, 208, 214,
    209, 211, 221, 212, 213, 215, 224, 216, 217, 218, 219, 220, 222, 228, 223, 225,
    226, 224, 227, 229, 240, 230, 231, 232, 233, 234, 235, 236, 238, 239, 237, 242,
    241, 243, 242, 244, 245, 246, 247, 248, 249, 250, 251, 252, 252, 253, 254, 255,
}

Definition at line 120 of file ffv1enc.c.

Referenced by encode_init().

options

const AVOption options[]

static

Initial value:

= {
    { "slicecrc", "Protect slices with CRCs", OFFSET(ec), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VE },
    { "coder", "Coder type", OFFSET(ac), AV_OPT_TYPE_INT,
            { .i64 = 0 }, -2, 2, VE, .unit = "coder" },
        { "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
            { .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, .unit = "coder" },
        { "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
            { .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, .unit = "coder" },
        { "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
            { .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, .unit = "coder" },
        { "ac", "Range with custom table (the ac option exists for compatibility and is deprecated)", 0, AV_OPT_TYPE_CONST,
            { .i64 = 1 }, INT_MIN, INT_MAX, VE, .unit = "coder" },
    { "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
            { .i64 = 0 }, 0, 1, VE },
 
    { NULL }
}

Definition at line 1246 of file ffv1enc.c.

ffv1_class

const AVClass ffv1_class

static

Initial value:

= {
    .class_name = "ffv1 encoder",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1264 of file ffv1enc.c.

ff_ffv1_encoder

const FFCodec ff_ffv1_encoder

Definition at line 1271 of file ffv1enc.c.