FFmpeg
Macros | Functions | Variables
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 "internal.h"
#include "put_bits.h"
#include "rangecoder.h"
#include "golomb.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, 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)
 
static av_cold int encode_close (AVCodecContext *avctx)
 

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 AVCodec 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 270 of file ffv1enc.c.

◆ RENAME [1/2]

#define RENAME (   name)    name

Definition at line 271 of file ffv1enc.c.

◆ TYPE [2/2]

#define TYPE   int32_t

Definition at line 270 of file ffv1enc.c.

◆ RENAME [2/2]

#define RENAME (   name)    name ## 32

Definition at line 271 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 1253 of file ffv1enc.c.

◆ VE

Definition at line 1254 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 185 of file ffv1enc.c.

Referenced by encode_line_TMPL(), and put_symbol().

◆ put_symbol()

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

◆ put_vlc_symbol()

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

Definition at line 240 of file ffv1enc.c.

Referenced by encode_line_TMPL().

◆ encode_plane()

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

Definition at line 274 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 312 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 327 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 335 of file ffv1enc.c.

Referenced by write_extradata().

◆ write_header()

static void write_header ( FFV1Context f)
static

Definition at line 347 of file ffv1enc.c.

Referenced by encode_frame(), and segment_start().

◆ write_extradata()

static int write_extradata ( FFV1Context f)
static

Definition at line 394 of file ffv1enc.c.

Referenced by encode_init().

◆ sort_stt()

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

Definition at line 467 of file ffv1enc.c.

Referenced by encode_init().

◆ encode_init()

static av_cold int encode_init ( AVCodecContext avctx)
static

Definition at line 515 of file ffv1enc.c.

◆ encode_slice_header()

static void encode_slice_header ( FFV1Context f,
FFV1Context fs 
)
static

Definition at line 905 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 938 of file ffv1enc.c.

Referenced by encode_slice().

◆ encode_slice()

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

Definition at line 1020 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 1097 of file ffv1enc.c.

◆ encode_close()

static av_cold int encode_close ( AVCodecContext avctx)
static

Definition at line 1247 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, "coder" },
{ "rice", "Golomb rice", 0, AV_OPT_TYPE_CONST,
{ .i64 = AC_GOLOMB_RICE }, INT_MIN, INT_MAX, VE, "coder" },
{ "range_def", "Range with default table", 0, AV_OPT_TYPE_CONST,
{ .i64 = AC_RANGE_DEFAULT_TAB_FORCE }, INT_MIN, INT_MAX, VE, "coder" },
{ "range_tab", "Range with custom table", 0, AV_OPT_TYPE_CONST,
{ .i64 = AC_RANGE_CUSTOM_TAB }, INT_MIN, INT_MAX, VE, "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, "coder" },
{ "context", "Context model", OFFSET(context_model), AV_OPT_TYPE_INT,
{ .i64 = 0 }, 0, 1, VE },
{ NULL }
}

Definition at line 1255 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,
}

Definition at line 1273 of file ffv1enc.c.

◆ ff_ffv1_encoder

const AVCodec ff_ffv1_encoder

Definition at line 1280 of file ffv1enc.c.

AC_RANGE_DEFAULT_TAB_FORCE
#define AC_RANGE_DEFAULT_TAB_FORCE
Definition: ffv1.h:57
AC_RANGE_CUSTOM_TAB
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:56
S
#define S(s, c, i)
Definition: flacdsp_template.c:46
state
static struct @319 state
C
s EdgeDetect Foobar g libavfilter vf_edgedetect c libavfilter vf_foobar c edit libavfilter and add an entry for foobar following the pattern of the other filters edit libavfilter allfilters and add an entry for foobar following the pattern of the other filters configure make j< whatever > ffmpeg ffmpeg i you should get a foobar png with Lena edge detected That s your new playground is ready Some little details about what s going which in turn will define variables for the build system and the C
Definition: writing_filters.txt:58
s
#define s(width, name)
Definition: cbs_vp9.c:257
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
AC_GOLOMB_RICE
#define AC_GOLOMB_RICE
Definition: ffv1.h:54
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
VE
#define VE
Definition: ffv1enc.c:1254
options
static const AVOption options[]
Definition: ffv1enc.c:1255
log2
#define log2(x)
Definition: libm.h:404
B
#define B
Definition: huffyuvdsp.h:32
OFFSET
#define OFFSET(x)
Definition: ffv1enc.c:1253
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:233