FFmpeg
Macros | Functions
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/pixdesc.h"

Go to the source code of this file.

Macros

#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)
 

Macro Definition Documentation

◆ 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 280 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 287 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 301 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 306 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 319 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 323 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 336 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 339 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 352 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 356 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 362 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 365 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 384 of file swscale.c.

Referenced by ff_getSwsFunc().

av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
w
uint8_t w
Definition: llviddspenc.c:38
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:287
data
const char data[16]
Definition: mxf.c:91
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:352
INPUT_FUNC
#define INPUT_FUNC(fmt, opt)
Definition: swscale.c:362
fmt
const char * fmt
Definition: avisynth_c.h:861
src
#define src
Definition: vp8dsp.c:254
to
const char * to
Definition: webvttdec.c:34
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:280
int32_t
int32_t
Definition: audio_convert.c:194
VSCALEX_FUNC
#define VSCALEX_FUNC(size, opt)
Definition: swscale.c:319
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:660
isAnyRGB
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:761
size
int size
Definition: twinvq_data.h:11134
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:139
uint8_t
uint8_t
Definition: audio_convert.c:194
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
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
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:284
_
#define _
VSCALE_FUNC
#define VSCALE_FUNC(size, opt)
Definition: swscale.c:336
SwsContext
Definition: swscale_internal.h:280
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:57
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