FFmpeg
Macros | Functions | Variables
swscale.c File Reference
#include <inttypes.h>
#include "config.h"
#include "libswscale/swscale.h"
#include "libswscale/swscale_internal.h"
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/x86/cpu.h"
#include "libavutil/cpu.h"
#include "libavutil/mem_internal.h"
#include "libavutil/pixdesc.h"

Go to the source code of this file.

Macros

#define YUV2YUVX_FUNC_MMX(opt, step)
 
#define YUV2YUVX_FUNC(opt, step)
 
#define SCALE_FUNC(filter_n, from_bpc, to_bpc, opt)
 
#define SCALE_FUNCS(filter_n, opt)
 
#define SCALE_FUNCS_MMX(opt)
 
#define SCALE_FUNCS_SSE(opt)
 
#define VSCALEX_FUNC(size, opt)
 
#define VSCALEX_FUNCS(opt)
 
#define VSCALE_FUNC(size, opt)
 
#define VSCALE_FUNCS(opt1, opt2)
 
#define INPUT_Y_FUNC(fmt, opt)
 
#define INPUT_UV_FUNC(fmt, opt)
 
#define INPUT_FUNC(fmt, opt)
 
#define INPUT_FUNCS(opt)
 
#define ASSIGN_SCALE_FUNC2(hscalefn, filtersize, opt1, opt2)
 
#define ASSIGN_MMX_SCALE_FUNC(hscalefn, filtersize, opt1, opt2)
 
#define ASSIGN_VSCALEX_FUNC(vscalefn, opt, do_16_case, condition_8bit)
 
#define ASSIGN_VSCALE_FUNC(vscalefn, opt1, opt2, opt2chk)
 
#define case_rgb(x, X, opt)
 
#define ASSIGN_SSE_SCALE_FUNC(hscalefn, filtersize, opt1, opt2)
 

Functions

 SCALE_FUNCS_SSE (sse2)
 
 SCALE_FUNCS_SSE (ssse3)
 
 SCALE_FUNCS_SSE (sse4)
 
 VSCALEX_FUNCS (sse2)
 
 VSCALEX_FUNCS (sse4)
 
 VSCALEX_FUNC (16, sse4)
 
 VSCALEX_FUNCS (avx)
 
 VSCALE_FUNCS (sse2, sse2)
 
 VSCALE_FUNC (16, sse4)
 
 VSCALE_FUNCS (avx, avx)
 
 INPUT_FUNCS (sse2)
 
 INPUT_FUNCS (ssse3)
 
 INPUT_FUNCS (avx)
 
av_cold void ff_sws_init_swscale_x86 (SwsContext *c)
 

Variables

const uint64_t ff_dither4 [2]
 
const uint64_t ff_dither8 [2]
 

Macro Definition Documentation

◆ YUV2YUVX_FUNC_MMX

#define YUV2YUVX_FUNC_MMX (   opt,
  step 
)
Value:
void ff_yuv2yuvX_ ##opt(const int16_t *filter, int filterSize, int srcOffset, \
uint8_t *dest, int dstW, \
const uint8_t *dither, int offset); \
static void yuv2yuvX_ ##opt(const int16_t *filter, int filterSize, \
const int16_t **src, uint8_t *dest, int dstW, \
const uint8_t *dither, int offset) \
{ \
if(dstW > 0) \
ff_yuv2yuvX_ ##opt(filter, filterSize - 1, 0, dest - offset, dstW + offset, dither, offset); \
return; \
}

Definition at line 192 of file swscale.c.

◆ YUV2YUVX_FUNC

#define YUV2YUVX_FUNC (   opt,
  step 
)
Value:
void ff_yuv2yuvX_ ##opt(const int16_t *filter, int filterSize, int srcOffset, \
uint8_t *dest, int dstW, \
const uint8_t *dither, int offset); \
static void yuv2yuvX_ ##opt(const int16_t *filter, int filterSize, \
const int16_t **src, uint8_t *dest, int dstW, \
const uint8_t *dither, int offset) \
{ \
int remainder = (dstW % step); \
int pixelsProcessed = dstW - remainder; \
if(((uintptr_t)dest) & 15){ \
yuv2yuvX_mmx(filter, filterSize, src, dest, dstW, dither, offset); \
return; \
} \
if(pixelsProcessed > 0) \
ff_yuv2yuvX_ ##opt(filter, filterSize - 1, 0, dest - offset, pixelsProcessed + offset, dither, offset); \
if(remainder > 0){ \
ff_yuv2yuvX_mmx(filter, filterSize - 1, pixelsProcessed, dest - offset, pixelsProcessed + remainder + offset, dither, offset); \
} \
return; \
}

Definition at line 205 of file swscale.c.

◆ SCALE_FUNC

#define SCALE_FUNC (   filter_n,
  from_bpc,
  to_bpc,
  opt 
)
Value:
void ff_hscale ## from_bpc ## to ## to_bpc ## _ ## filter_n ## _ ## opt( \
SwsContext *c, int16_t *data, \
int dstW, const uint8_t *src, \
const int16_t *filter, \
const int32_t *filterPos, int filterSize)

Definition at line 240 of file swscale.c.

◆ SCALE_FUNCS

#define SCALE_FUNCS (   filter_n,
  opt 
)
Value:
SCALE_FUNC(filter_n, 8, 15, opt); \
SCALE_FUNC(filter_n, 9, 15, opt); \
SCALE_FUNC(filter_n, 10, 15, opt); \
SCALE_FUNC(filter_n, 12, 15, opt); \
SCALE_FUNC(filter_n, 14, 15, opt); \
SCALE_FUNC(filter_n, 16, 15, opt); \
SCALE_FUNC(filter_n, 8, 19, opt); \
SCALE_FUNC(filter_n, 9, 19, opt); \
SCALE_FUNC(filter_n, 10, 19, opt); \
SCALE_FUNC(filter_n, 12, 19, opt); \
SCALE_FUNC(filter_n, 14, 19, opt); \
SCALE_FUNC(filter_n, 16, 19, opt)

Definition at line 247 of file swscale.c.

◆ SCALE_FUNCS_MMX

#define SCALE_FUNCS_MMX (   opt)
Value:
SCALE_FUNCS(4, opt); \
SCALE_FUNCS(8, opt); \
SCALE_FUNCS(X, opt)

Definition at line 261 of file swscale.c.

◆ SCALE_FUNCS_SSE

#define SCALE_FUNCS_SSE (   opt)
Value:
SCALE_FUNCS(4, opt); \
SCALE_FUNCS(8, opt); \
SCALE_FUNCS(X4, opt); \
SCALE_FUNCS(X8, opt)

Definition at line 266 of file swscale.c.

◆ VSCALEX_FUNC

#define VSCALEX_FUNC (   size,
  opt 
)
Value:
void ff_yuv2planeX_ ## size ## _ ## opt(const int16_t *filter, int filterSize, \
const int16_t **src, uint8_t *dest, int dstW, \
const uint8_t *dither, int offset)

Definition at line 279 of file swscale.c.

◆ VSCALEX_FUNCS

#define VSCALEX_FUNCS (   opt)
Value:
VSCALEX_FUNC(8, opt); \
VSCALEX_FUNC(9, opt); \
VSCALEX_FUNC(10, opt)

Definition at line 283 of file swscale.c.

◆ VSCALE_FUNC

#define VSCALE_FUNC (   size,
  opt 
)
Value:
void ff_yuv2plane1_ ## size ## _ ## opt(const int16_t *src, uint8_t *dst, int dstW, \
const uint8_t *dither, int offset)

Definition at line 296 of file swscale.c.

◆ VSCALE_FUNCS

#define VSCALE_FUNCS (   opt1,
  opt2 
)
Value:
VSCALE_FUNC(8, opt1); \
VSCALE_FUNC(9, opt2); \
VSCALE_FUNC(10, opt2); \
VSCALE_FUNC(16, opt1)

Definition at line 299 of file swscale.c.

◆ INPUT_Y_FUNC

#define INPUT_Y_FUNC (   fmt,
  opt 
)
Value:
void ff_ ## fmt ## ToY_ ## opt(uint8_t *dst, const uint8_t *src, \
const uint8_t *unused1, const uint8_t *unused2, \
int w, uint32_t *unused)

Definition at line 312 of file swscale.c.

◆ INPUT_UV_FUNC

#define INPUT_UV_FUNC (   fmt,
  opt 
)
Value:
void ff_ ## fmt ## ToUV_ ## opt(uint8_t *dstU, uint8_t *dstV, \
const uint8_t *unused0, \
const uint8_t *src1, \
const uint8_t *src2, \
int w, uint32_t *unused)

Definition at line 316 of file swscale.c.

◆ INPUT_FUNC

#define INPUT_FUNC (   fmt,
  opt 
)
Value:
INPUT_Y_FUNC(fmt, opt); \
INPUT_UV_FUNC(fmt, opt)

Definition at line 322 of file swscale.c.

◆ INPUT_FUNCS

#define INPUT_FUNCS (   opt)
Value:
INPUT_FUNC(uyvy, opt); \
INPUT_FUNC(yuyv, opt); \
INPUT_UV_FUNC(nv12, opt); \
INPUT_UV_FUNC(nv21, opt); \
INPUT_FUNC(rgba, opt); \
INPUT_FUNC(bgra, opt); \
INPUT_FUNC(argb, opt); \
INPUT_FUNC(abgr, opt); \
INPUT_FUNC(rgb24, opt); \
INPUT_FUNC(bgr24, opt)

Definition at line 325 of file swscale.c.

◆ ASSIGN_SCALE_FUNC2

#define ASSIGN_SCALE_FUNC2 (   hscalefn,
  filtersize,
  opt1,
  opt2 
)
Value:
do { \
if (c->srcBpc == 8) { \
hscalefn = c->dstBpc <= 14 ? ff_hscale8to15_ ## filtersize ## _ ## opt2 : \
ff_hscale8to19_ ## filtersize ## _ ## opt1; \
} else if (c->srcBpc == 9) { \
hscalefn = c->dstBpc <= 14 ? ff_hscale9to15_ ## filtersize ## _ ## opt2 : \
ff_hscale9to19_ ## filtersize ## _ ## opt1; \
} else if (c->srcBpc == 10) { \
hscalefn = c->dstBpc <= 14 ? ff_hscale10to15_ ## filtersize ## _ ## opt2 : \
ff_hscale10to19_ ## filtersize ## _ ## opt1; \
} else if (c->srcBpc == 12) { \
hscalefn = c->dstBpc <= 14 ? ff_hscale12to15_ ## filtersize ## _ ## opt2 : \
ff_hscale12to19_ ## filtersize ## _ ## opt1; \
} else if (c->srcBpc == 14 || ((c->srcFormat==AV_PIX_FMT_PAL8||isAnyRGB(c->srcFormat)) && av_pix_fmt_desc_get(c->srcFormat)->comp[0].depth<16)) { \
hscalefn = c->dstBpc <= 14 ? ff_hscale14to15_ ## filtersize ## _ ## opt2 : \
ff_hscale14to19_ ## filtersize ## _ ## opt1; \
} else { /* c->srcBpc == 16 */ \
av_assert0(c->srcBpc == 16);\
hscalefn = c->dstBpc <= 14 ? ff_hscale16to15_ ## filtersize ## _ ## opt2 : \
ff_hscale16to19_ ## filtersize ## _ ## opt1; \
} \
} while (0)

◆ ASSIGN_MMX_SCALE_FUNC

#define ASSIGN_MMX_SCALE_FUNC (   hscalefn,
  filtersize,
  opt1,
  opt2 
)
Value:
switch (filtersize) { \
case 4: ASSIGN_SCALE_FUNC2(hscalefn, 4, opt1, opt2); break; \
case 8: ASSIGN_SCALE_FUNC2(hscalefn, 8, opt1, opt2); break; \
default: ASSIGN_SCALE_FUNC2(hscalefn, X, opt1, opt2); break; \
}

◆ ASSIGN_VSCALEX_FUNC

#define ASSIGN_VSCALEX_FUNC (   vscalefn,
  opt,
  do_16_case,
  condition_8bit 
)
Value:
switch(c->dstBpc){ \
case 16: do_16_case; break; \
case 10: if (!isBE(c->dstFormat) && c->dstFormat != AV_PIX_FMT_P010LE) vscalefn = ff_yuv2planeX_10_ ## opt; break; \
case 9: if (!isBE(c->dstFormat)) vscalefn = ff_yuv2planeX_9_ ## opt; break; \
case 8: if ((condition_8bit) && !c->use_mmx_vfilter) vscalefn = ff_yuv2planeX_8_ ## opt; break; \
}

◆ ASSIGN_VSCALE_FUNC

#define ASSIGN_VSCALE_FUNC (   vscalefn,
  opt1,
  opt2,
  opt2chk 
)
Value:
switch(c->dstBpc){ \
case 16: if (!isBE(c->dstFormat)) vscalefn = ff_yuv2plane1_16_ ## opt1; break; \
case 10: if (!isBE(c->dstFormat) && c->dstFormat != AV_PIX_FMT_P010LE && opt2chk) vscalefn = ff_yuv2plane1_10_ ## opt2; break; \
case 9: if (!isBE(c->dstFormat) && opt2chk) vscalefn = ff_yuv2plane1_9_ ## opt2; break; \
case 8: vscalefn = ff_yuv2plane1_8_ ## opt1; break; \
default: av_assert0(c->dstBpc>8); \
}

◆ case_rgb

#define case_rgb (   x,
  X,
  opt 
)
Value:
case AV_PIX_FMT_ ## X: \
c->lumToYV12 = ff_ ## x ## ToY_ ## opt; \
if (!c->chrSrcHSubSample) \
c->chrToYV12 = ff_ ## x ## ToUV_ ## opt; \
break

◆ ASSIGN_SSE_SCALE_FUNC

#define ASSIGN_SSE_SCALE_FUNC (   hscalefn,
  filtersize,
  opt1,
  opt2 
)
Value:
switch (filtersize) { \
case 4: ASSIGN_SCALE_FUNC2(hscalefn, 4, opt1, opt2); break; \
case 8: ASSIGN_SCALE_FUNC2(hscalefn, 8, opt1, opt2); break; \
default: if (filtersize & 4) ASSIGN_SCALE_FUNC2(hscalefn, X4, opt1, opt2); \
else ASSIGN_SCALE_FUNC2(hscalefn, X8, opt1, opt2); \
break; \
}

Function Documentation

◆ SCALE_FUNCS_SSE() [1/3]

SCALE_FUNCS_SSE ( sse2  )

◆ SCALE_FUNCS_SSE() [2/3]

SCALE_FUNCS_SSE ( ssse3  )

◆ SCALE_FUNCS_SSE() [3/3]

SCALE_FUNCS_SSE ( sse4  )

◆ VSCALEX_FUNCS() [1/3]

VSCALEX_FUNCS ( sse2  )

◆ VSCALEX_FUNCS() [2/3]

VSCALEX_FUNCS ( sse4  )

◆ VSCALEX_FUNC()

VSCALEX_FUNC ( 16  ,
sse4   
)

◆ VSCALEX_FUNCS() [3/3]

VSCALEX_FUNCS ( avx  )

◆ VSCALE_FUNCS() [1/2]

VSCALE_FUNCS ( sse2  ,
sse2   
)

◆ VSCALE_FUNC()

VSCALE_FUNC ( 16  ,
sse4   
)

◆ VSCALE_FUNCS() [2/2]

VSCALE_FUNCS ( avx  ,
avx   
)

◆ INPUT_FUNCS() [1/3]

INPUT_FUNCS ( sse2  )

◆ INPUT_FUNCS() [2/3]

INPUT_FUNCS ( ssse3  )

◆ INPUT_FUNCS() [3/3]

INPUT_FUNCS ( avx  )

◆ ff_sws_init_swscale_x86()

av_cold void ff_sws_init_swscale_x86 ( SwsContext c)

Definition at line 355 of file swscale.c.

Referenced by ff_getSwsFunc().

Variable Documentation

◆ ff_dither4

const uint64_t ff_dither4[2]
Initial value:
= {
0x0103010301030103LL,
0x0200020002000200LL,}

Definition at line 33 of file swscale.c.

Referenced by yuv420_rgb16_TMPL().

◆ ff_dither8

const uint64_t ff_dither8[2]
Initial value:
= {
0x0602060206020602LL,
0x0004000400040004LL,}

Definition at line 37 of file swscale.c.

Referenced by yuv420_rgb15_TMPL(), and yuv420_rgb16_TMPL().

av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2541
X
@ X
Definition: vf_addroi.c:26
step
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about which is also called distortion Distortion can be quantified by almost any quality measurement one chooses the sum of squared differences is used but more complex methods that consider psychovisual effects can be used as well It makes no difference in this discussion First step
Definition: rate_distortion.txt:58
w
uint8_t w
Definition: llviddspenc.c:39
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:58
SCALE_FUNCS
#define SCALE_FUNCS(filter_n, opt)
Definition: swscale.c:247
data
const char data[16]
Definition: mxf.c:142
filter
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
Definition: filter_design.txt:228
INPUT_Y_FUNC
#define INPUT_Y_FUNC(fmt, opt)
Definition: swscale.c:312
INPUT_FUNC
#define INPUT_FUNC(fmt, opt)
Definition: swscale.c:322
to
const char * to
Definition: webvttdec.c:35
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
SCALE_FUNC
#define SCALE_FUNC(filter_n, from_bpc, to_bpc, opt)
Definition: swscale.c:240
VSCALEX_FUNC
#define VSCALEX_FUNC(size, opt)
Definition: swscale.c:279
src
#define src
Definition: vp8dsp.c:255
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
isBE
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:667
isAnyRGB
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:775
size
int size
Definition: twinvq_data.h:10344
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
src1
#define src1
Definition: h264pred.c:140
ASSIGN_SCALE_FUNC2
#define ASSIGN_SCALE_FUNC2(hscalefn, filtersize, opt1, opt2)
AV_PIX_FMT_PAL8
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:77
dstV
uint16_t * dstV
Definition: input.c:403
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:106
AV_PIX_FMT_P010LE
@ AV_PIX_FMT_P010LE
like NV12, with 10bpp per component, data in the high bits, zeros in the low bits,...
Definition: pixfmt.h:274
_
#define _
VSCALE_FUNC
#define VSCALE_FUNC(size, opt)
Definition: swscale.c:296
int32_t
int32_t
Definition: audioconvert.c:56
SwsContext
Definition: swscale_internal.h:283
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:59