FFmpeg
Macros | Functions
diracdsp.c File Reference
#include "avcodec.h"
#include "diracdsp.h"

Go to the source code of this file.

Macros

#define FILTER(src, stride)
 
#define PIXOP_BILINEAR(PFX, OP, WIDTH)
 
#define OP_PUT(dst, val)   (dst) = (val)
 
#define OP_AVG(dst, val)   (dst) = (((dst) + (val) + 1)>>1)
 
#define op_scale1(x)   block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom)
 
#define op_scale2(x)   dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom)
 
#define DIRAC_WEIGHT(W)
 
#define ADD_OBMC(xblen)
 
#define PUT_SIGNED_RECT_CLAMPED(PX)
 
#define DEQUANT_SUBBAND(PX)
 
#define PIXFUNC(PFX, WIDTH)
 

Functions

static void dirac_hpel_filter (uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, const uint8_t *src, int stride, int width, int height)
 
static void put_signed_rect_clamped_8bit_c (uint8_t *dst, int dst_stride, const uint8_t *_src, int src_stride, int width, int height)
 
static void add_rect_clamped_c (uint8_t *dst, const uint16_t *src, int stride, const int16_t *idwt, int idwt_stride, int width, int height)
 
av_cold void ff_diracdsp_init (DiracDSPContext *c)
 

Macro Definition Documentation

#define FILTER (   src,
  stride 
)
Value:
((21*((src)[ 0*stride] + (src)[1*stride]) \
-7*((src)[-1*stride] + (src)[2*stride]) \
+3*((src)[-2*stride] + (src)[3*stride]) \
-1*((src)[-3*stride] + (src)[4*stride]) + 16) >> 5)
#define src
Definition: vp8dsp.c:254
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
#define stride

Definition at line 24 of file diracdsp.c.

Referenced by dirac_hpel_filter().

#define PIXOP_BILINEAR (   PFX,
  OP,
  WIDTH 
)
Value:
static void ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c(uint8_t *dst, const uint8_t *src[5], int stride, int h) \
{ \
int x; \
const uint8_t *s0 = src[0]; \
const uint8_t *s1 = src[1]; \
const uint8_t *s2 = src[2]; \
const uint8_t *s3 = src[3]; \
const uint8_t *w = src[4]; \
\
while (h--) { \
for (x = 0; x < WIDTH; x++) { \
OP(dst[x], (s0[x]*w[0] + s1[x]*w[1] + s2[x]*w[2] + s3[x]*w[3] + 8) >> 4); \
} \
\
dst += stride; \
s3 += stride; \
} \
}
#define WIDTH
Definition: c93.c:43
#define src
Definition: vp8dsp.c:254
uint8_t
#define s2
Definition: regdef.h:39
#define s0
Definition: regdef.h:37
#define OP(LOAD, STORE)
Definition: hpeldsp_alpha.c:55
uint8_t w
Definition: llviddspenc.c:38
#define s3
Definition: regdef.h:40
#define s1
Definition: regdef.h:38
int
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
#define stride
for(j=16;j >0;--j)

Definition at line 52 of file diracdsp.c.

#define OP_PUT (   dst,
  val 
)    (dst) = (val)

Definition at line 75 of file diracdsp.c.

#define OP_AVG (   dst,
  val 
)    (dst) = (((dst) + (val) + 1)>>1)

Definition at line 76 of file diracdsp.c.

#define op_scale1 (   x)    block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom)

Definition at line 85 of file diracdsp.c.

#define op_scale2 (   x)    dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom)

Definition at line 86 of file diracdsp.c.

#define DIRAC_WEIGHT (   W)
Value:
static void weight_dirac_pixels ## W ## _c(uint8_t *block, int stride, int log2_denom, \
int weight, int h) { \
int x; \
while (h--) { \
for (x = 0; x < W; x++) { \
op_scale1(x+1); \
} \
} \
} \
static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, const uint8_t *src, int stride, int log2_denom, \
int weightd, int weights, int h) { \
int x; \
while (h--) { \
for (x = 0; x < W; x++) { \
op_scale2(x+1); \
} \
dst += stride; \
src += stride; \
} \
}
#define src
Definition: vp8dsp.c:254
#define op_scale1(x)
Definition: diracdsp.c:85
#define op_scale2(x)
Definition: diracdsp.c:86
The exact code depends on how similar the blocks are and how related they are to the block
uint8_t
Definition: vf_addroi.c:26
static int weight(int i, int blen, int offset)
Definition: diracdec.c:1564
int
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
#define stride
for(j=16;j >0;--j)

Definition at line 88 of file diracdsp.c.

#define ADD_OBMC (   xblen)
Value:
static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, int stride, \
const uint8_t *obmc_weight, int yblen) \
{ \
int x; \
while (yblen--) { \
for (x = 0; x < xblen; x += 2) { \
dst[x ] += src[x ] * obmc_weight[x ]; \
dst[x+1] += src[x+1] * obmc_weight[x+1]; \
} \
dst += stride; \
src += stride; \
obmc_weight += 32; \
} \
}
#define src
Definition: vp8dsp.c:254
uint8_t
int
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
#define stride
for(j=16;j >0;--j)

Definition at line 117 of file diracdsp.c.

#define PUT_SIGNED_RECT_CLAMPED (   PX)
Value:
static void put_signed_rect_clamped_ ## PX ## bit_c(uint8_t *_dst, int dst_stride, const uint8_t *_src, \
int src_stride, int width, int height) \
{ \
int x, y; \
uint16_t *dst = (uint16_t *)_dst; \
int32_t *src = (int32_t *)_src; \
for (y = 0; y < height; y++) { \
for (x = 0; x < width; x+=4) { \
dst[x ] = av_clip_uintp2(src[x ] + (1U << (PX - 1)), PX); \
dst[x+1] = av_clip_uintp2(src[x+1] + (1U << (PX - 1)), PX); \
dst[x+2] = av_clip_uintp2(src[x+2] + (1U << (PX - 1)), PX); \
dst[x+3] = av_clip_uintp2(src[x+3] + (1U << (PX - 1)), PX); \
} \
dst += dst_stride >> 1; \
src += src_stride >> 2; \
} \
}
#define src
Definition: vp8dsp.c:254
uint8_t
#define height
#define U(x)
Definition: vp56_arith.h:37
#define width
int32_t
int
for(j=16;j >0;--j)

Definition at line 153 of file diracdsp.c.

#define DEQUANT_SUBBAND (   PX)
Value:
static void dequant_subband_ ## PX ## _c(uint8_t *src, uint8_t *dst, ptrdiff_t stride, \
const int qf, const int qs, int tot_v, int tot_h) \
{ \
int i, y; \
for (y = 0; y < tot_v; y++) { \
PX c, sign, *src_r = (PX *)src, *dst_r = (PX *)dst; \
for (i = 0; i < tot_h; i++) { \
c = *src_r++; \
sign = FFSIGN(c)*(!!c); \
c = (FFABS(c)*(unsigned)qf + qs) >> 2; \
*dst_r++ = c*sign; \
} \
src += tot_h << (sizeof(PX) >> 1); \
dst += stride; \
} \
}
#define src
Definition: vp8dsp.c:254
uint8_t
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 i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define FFSIGN(a)
Definition: common.h:73
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
int
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
#define stride
for(j=16;j >0;--j)

Definition at line 192 of file diracdsp.c.

#define PIXFUNC (   PFX,
  WIDTH 
)
Value:
c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \
c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \
c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \
c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c
#define WIDTH
Definition: c93.c:43
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

Definition at line 213 of file diracdsp.c.

Referenced by ff_diracdsp_init().

Function Documentation

static void dirac_hpel_filter ( uint8_t dsth,
uint8_t dstv,
uint8_t dstc,
const uint8_t src,
int  stride,
int  width,
int  height 
)
static

Definition at line 30 of file diracdsp.c.

Referenced by ff_diracdsp_init().

static void put_signed_rect_clamped_8bit_c ( uint8_t dst,
int  dst_stride,
const uint8_t _src,
int  src_stride,
int  width,
int  height 
)
static

Definition at line 137 of file diracdsp.c.

Referenced by ff_diracdsp_init().

static void add_rect_clamped_c ( uint8_t dst,
const uint16_t *  src,
int  stride,
const int16_t *  idwt,
int  idwt_stride,
int  width,
int  height 
)
static

Definition at line 175 of file diracdsp.c.

Referenced by ff_diracdsp_init().

av_cold void ff_diracdsp_init ( DiracDSPContext c)

Definition at line 219 of file diracdsp.c.

Referenced by dirac_decode_init().