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 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

#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)
data
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:100
uint8_t
uint8_t
Definition: audio_convert.c:194
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
_
#define _
to
const char * to
Definition: webvttdec.c:34
src
#define src
Definition: vp8dsp.c:255
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
int32_t
int32_t
Definition: audio_convert.c:194

Definition at line 280 of file swscale.c.

#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)
SCALE_FUNC
#define SCALE_FUNC(filter_n, from_bpc, to_bpc, opt)
Definition: swscale.c:280

Definition at line 287 of file swscale.c.

#define SCALE_FUNCS_MMX (   opt)
Value:
SCALE_FUNCS(4, opt); \
SCALE_FUNCS(8, opt); \
SCALE_FUNCS(X, opt)
SCALE_FUNCS
#define SCALE_FUNCS(filter_n, opt)
Definition: swscale.c:287
X
Definition: vf_addroi.c:26

Definition at line 301 of file swscale.c.

#define SCALE_FUNCS_SSE (   opt)
Value:
SCALE_FUNCS(4, opt); \
SCALE_FUNCS(8, opt); \
SCALE_FUNCS(X4, opt); \
SCALE_FUNCS(X8, opt)
SCALE_FUNCS
#define SCALE_FUNCS(filter_n, opt)
Definition: swscale.c:287

Definition at line 306 of file swscale.c.

#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)
uint8_t
uint8_t
Definition: audio_convert.c:194
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:84
size
ptrdiff_t size
Definition: opengl_enc.c:100
_
#define _
src
#define src
Definition: vp8dsp.c:255
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
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:59

Definition at line 319 of file swscale.c.

#define VSCALEX_FUNCS (   opt)
Value:
VSCALEX_FUNC(8, opt); \
VSCALEX_FUNC(9, opt); \
VSCALEX_FUNC(10, opt)
VSCALEX_FUNC
#define VSCALEX_FUNC(size, opt)
Definition: swscale.c:319

Definition at line 323 of file swscale.c.

#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)
uint8_t
uint8_t
Definition: audio_convert.c:194
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:84
size
ptrdiff_t size
Definition: opengl_enc.c:100
_
#define _
src
#define src
Definition: vp8dsp.c:255
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:59

Definition at line 336 of file swscale.c.

#define VSCALE_FUNCS (   opt1,
  opt2 
)
Value:
VSCALE_FUNC(8, opt1); \
VSCALE_FUNC(9, opt2); \
VSCALE_FUNC(10, opt2); \
VSCALE_FUNC(16, opt1)
VSCALE_FUNC
#define VSCALE_FUNC(size, opt)
Definition: swscale.c:336

Definition at line 339 of file swscale.c.

#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)
uint8_t
uint8_t
Definition: audio_convert.c:194
src
#define src
Definition: vp8dsp.c:255
w
uint8_t w
Definition: llviddspenc.c:39

Definition at line 352 of file swscale.c.

#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)
uint8_t
uint8_t
Definition: audio_convert.c:194
w
uint8_t w
Definition: llviddspenc.c:39
src1
#define src1
Definition: h264pred.c:140
dstV
uint16_t * dstV
Definition: input.c:403

Definition at line 356 of file swscale.c.

#define INPUT_FUNC (   fmt,
  opt 
)
Value:
INPUT_Y_FUNC(fmt, opt); \
INPUT_UV_FUNC(fmt, opt)
INPUT_Y_FUNC
#define INPUT_Y_FUNC(fmt, opt)
Definition: swscale.c:352
INPUT_UV_FUNC
#define INPUT_UV_FUNC(fmt, opt)
Definition: swscale.c:356

Definition at line 362 of file swscale.c.

#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)
INPUT_FUNC
#define INPUT_FUNC(fmt, opt)
Definition: swscale.c:362
INPUT_UV_FUNC
#define INPUT_UV_FUNC(fmt, opt)
Definition: swscale.c:356

Definition at line 365 of file swscale.c.

#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)
isAnyRGB
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:775
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:77
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
_
#define _
if
if(ret)
Definition: filter_design.txt:179
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:58
#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_SCALE_FUNC2
#define ASSIGN_SCALE_FUNC2(hscalefn, filtersize, opt1, opt2)
X
Definition: vf_addroi.c:26

Referenced by ff_sws_init_swscale_x86().

#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; \
}
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
AV_PIX_FMT_P010LE
like NV12, with 10bpp per component, data in the high bits, zeros in the low bits, little-endian
Definition: pixfmt.h:284
isBE
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:667

Referenced by ff_sws_init_swscale_x86().

#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); \
}
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
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
AV_PIX_FMT_P010LE
like NV12, with 10bpp per component, data in the high bits, zeros in the low bits, little-endian
Definition: pixfmt.h:284
isBE
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
Definition: swscale_internal.h:667

Referenced by ff_sws_init_swscale_x86().

#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
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
if
if(ret)
Definition: filter_design.txt:179
X
Definition: vf_addroi.c:26

Referenced by ff_sws_init_swscale_x86().

#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; \
}
ASSIGN_SCALE_FUNC2
#define ASSIGN_SCALE_FUNC2(hscalefn, filtersize, opt1, opt2)
else
else
Definition: snow.txt:125

Referenced by ff_sws_init_swscale_x86().

Function Documentation

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)

Definition at line 395 of file swscale.c.

Referenced by ff_getSwsFunc(), and usePal().

Variable Documentation

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

Definition at line 33 of file swscale.c.

Referenced by usePal(), and yuv420_rgb16_TMPL().

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

Definition at line 37 of file swscale.c.

Referenced by usePal(), yuv420_rgb15_TMPL(), and yuv420_rgb16_TMPL().

Generated on Tue Jan 19 2021 19:23:11 for FFmpeg by   doxygen 1.8.11