Go to the source code of this file.
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#define | declare_fpel(type, sz) |
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#define | declare_copy_avg(sz) |
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#define | decl_mc_func(op, filter, dir, sz) |
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#define | define_8tap_2d_fn(op, filter, sz) |
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#define | decl_filter_funcs(op, dir, sz) |
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#define | decl_mc_funcs(sz) |
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#define | define_8tap_2d_funcs(sz) |
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#define | init_fpel(idx1, idx2, sz, type) |
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#define | init_copy_avg(idx, sz) |
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#define | init_mc_func(idx1, idx2, op, filter, fname, dir, mx, my, sz, pfx) dsp->mc[idx1][filter][idx2][mx][my] = pfx##op##_##fname##sz##_##dir##_neon |
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#define | init_mc_funcs(idx, dir, mx, my, sz, pfx) |
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#define | init_mc_funcs_dirs(idx, sz) |
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#define | define_itxfm(type_a, type_b, sz) |
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#define | define_itxfm_funcs(sz) |
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#define | init_itxfm(tx, sz) |
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#define | init_idct(tx, nm) |
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#define | define_loop_filter(dir, wd, size) void ff_vp9_loop_filter_##dir##_##wd##_##size##_neon(uint8_t *dst, ptrdiff_t stride, int E, int I, int H) |
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#define | define_loop_filters(wd, size) |
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#define | lf_mix_fn(dir, wd1, wd2, stridea) |
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#define | lf_mix_fns(wd1, wd2) |
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| declare_copy_avg (64) |
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| declare_copy_avg (32) |
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| declare_copy_avg (16) |
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| declare_copy_avg (8) |
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| declare_copy_avg (4) |
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| decl_mc_funcs (64) |
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| decl_mc_funcs (32) |
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| decl_mc_funcs (16) |
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| decl_mc_funcs (8) |
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| decl_mc_funcs (4) |
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| define_8tap_2d_funcs (64) |
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| define_itxfm_funcs (4) |
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| define_itxfm_funcs (8) |
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| define_itxfm_funcs (16) |
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| define_itxfm (idct, idct, 32) |
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| define_itxfm (iwht, iwht, 4) |
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static av_cold void | vp9dsp_itxfm_init_arm (VP9DSPContext *dsp) |
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| define_loop_filters (4, 8) |
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| define_loop_filters (8, 8) |
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| define_loop_filters (16, 8) |
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| define_loop_filters (16, 16) |
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| define_loop_filters (44, 16) |
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| lf_mix_fns (4, lf_mix_fns(8) |
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av_cold void | ff_vp9dsp_init_arm (VP9DSPContext *dsp, int bpp) |
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◆ declare_fpel
#define declare_fpel |
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type, |
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sz |
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◆ declare_copy_avg
#define declare_copy_avg |
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◆ decl_mc_func
#define decl_mc_func |
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op, |
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filter, |
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dir, |
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sz |
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◆ define_8tap_2d_fn
#define define_8tap_2d_fn |
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op, |
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filter, |
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sz |
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Value:
{ \
LOCAL_ALIGNED_16(
uint8_t,
temp, [((1 + (sz < 64)) * sz + 8) * sz]); \
\
src - 3 * src_stride, src_stride, \
ff_vp9_##
op##
_##
filter##sz##_v_neon(dst, dst_stride, \
}
Definition at line 43 of file vp9dsp_init_arm.c.
◆ decl_filter_funcs
#define decl_filter_funcs |
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op, |
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dir, |
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Value:
decl_mc_func(
op, sharp, dir, sz); \
decl_mc_func(
op, smooth, dir, sz)
Definition at line 58 of file vp9dsp_init_arm.c.
◆ decl_mc_funcs
#define decl_mc_funcs |
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sz | ) |
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Value:
decl_filter_funcs(
avg,
h, sz); \
decl_filter_funcs(put, v, sz); \
decl_filter_funcs(
avg, v, sz); \
decl_filter_funcs(put, hv, sz); \
decl_filter_funcs(
avg, hv, sz)
Definition at line 63 of file vp9dsp_init_arm.c.
◆ define_8tap_2d_funcs
#define define_8tap_2d_funcs |
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Value:
define_8tap_2d_fn(put, sharp, sz) \
define_8tap_2d_fn(put, smooth, sz) \
define_8tap_2d_fn(
avg, regular, sz) \
define_8tap_2d_fn(
avg, sharp, sz) \
define_8tap_2d_fn(
avg, smooth, sz)
Definition at line 83 of file vp9dsp_init_arm.c.
◆ init_fpel
#define init_fpel |
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idx1, |
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idx2, |
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type |
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◆ init_copy_avg
#define init_copy_avg |
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Value:
init_fpel(idx, 1, sz,
avg)
◆ init_mc_func
#define init_mc_func |
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idx1, |
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idx2, |
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op, |
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filter, |
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fname, |
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dir, |
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mx, |
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my, |
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sz, |
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pfx |
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| dsp->mc[idx1][filter][idx2][mx][my] = pfx##op##_##fname##sz##_##dir##_neon |
◆ init_mc_funcs
#define init_mc_funcs |
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dir, |
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mx, |
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my, |
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pfx |
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◆ init_mc_funcs_dirs
#define init_mc_funcs_dirs |
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Value:
init_mc_funcs(idx, v, 0, 1, sz, ff_vp9_); \
init_mc_funcs(idx, hv, 1, 1, sz,)
◆ define_itxfm
#define define_itxfm |
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Value:void ff_vp9_##type_a##
_##type_b##
_##sz##x##sz##_add_neon(
uint8_t *_dst, \
int16_t *_block, int eob)
Definition at line 143 of file vp9dsp_init_arm.c.
◆ define_itxfm_funcs
#define define_itxfm_funcs |
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Value:
define_itxfm(iadst,
idct, sz); \
define_itxfm(
idct, iadst, sz); \
define_itxfm(iadst, iadst, sz)
Definition at line 148 of file vp9dsp_init_arm.c.
◆ init_itxfm
#define init_itxfm |
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tx, |
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Value: dsp->itxfm_add[tx][
DCT_DCT] = ff_vp9_idct_idct_##sz##_add_neon; \
dsp->itxfm_add[tx][
DCT_ADST] = ff_vp9_iadst_idct_##sz##_add_neon; \
dsp->itxfm_add[tx][
ADST_DCT] = ff_vp9_idct_iadst_##sz##_add_neon; \
dsp->itxfm_add[tx][
ADST_ADST] = ff_vp9_iadst_iadst_##sz##_add_neon
◆ init_idct
#define init_idct |
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tx, |
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nm |
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Value:
dsp->itxfm_add[tx][
ADST_ADST] = ff_vp9_##nm##_add_neon
◆ define_loop_filter
◆ define_loop_filters
#define define_loop_filters |
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◆ lf_mix_fn
#define lf_mix_fn |
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Value:static void loop_filter_##dir##
_##wd1##wd2##_16_neon(
uint8_t *dst, \
{ \
ff_vp9_loop_filter_##dir##
_##wd1##_8_neon(dst,
stride,
E & 0xff, I & 0xff,
H & 0xff); \
ff_vp9_loop_filter_##dir##
_##wd2##_8_neon(dst + 8 * stridea,
stride,
E >> 8, I >> 8,
H >> 8); \
}
Definition at line 200 of file vp9dsp_init_arm.c.
◆ lf_mix_fns
#define lf_mix_fns |
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wd1, |
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wd2 |
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◆ declare_copy_avg() [1/5]
◆ declare_copy_avg() [2/5]
◆ declare_copy_avg() [3/5]
◆ declare_copy_avg() [4/5]
◆ declare_copy_avg() [5/5]
◆ decl_mc_funcs() [1/5]
◆ decl_mc_funcs() [2/5]
◆ decl_mc_funcs() [3/5]
◆ decl_mc_funcs() [4/5]
◆ decl_mc_funcs() [5/5]
◆ define_8tap_2d_funcs()
define_8tap_2d_funcs |
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◆ define_itxfm_funcs() [1/3]
◆ define_itxfm_funcs() [2/3]
◆ define_itxfm_funcs() [3/3]
define_itxfm_funcs |
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◆ define_itxfm() [1/2]
◆ define_itxfm() [2/2]
define_itxfm |
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iwht |
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iwht |
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◆ vp9dsp_itxfm_init_arm()
◆ define_loop_filters() [1/5]
define_loop_filters |
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◆ define_loop_filters() [2/5]
define_loop_filters |
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◆ define_loop_filters() [3/5]
define_loop_filters |
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◆ define_loop_filters() [4/5]
define_loop_filters |
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◆ define_loop_filters() [5/5]
define_loop_filters |
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◆ lf_mix_fns()
lf_mix_fns |
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lf_mix_fns( |
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◆ ff_vp9dsp_init_arm()
#define decl_mc_func(op, filter, dir, sz)
#define define_loop_filter(dir, wd, size)
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
#define lf_mix_fn(dir, wd1, wd2, stridea)
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 type
static void idct(int16_t block[64])
#define define_itxfm(type_a, type_b, sz)
static int op(uint8_t **dst, const uint8_t *dst_end, GetByteContext *gb, int pixel, int count, int *x, int width, int linesize)
Perform decode operation.
F H1 F F H1 F F F F H1<-F-------F-------F v v v H2 H3 H2 ^ ^ ^ F-------F-------F-> H1<-F-------F-------F|||||||||F H1 F|||||||||F H1 Funavailable fullpel samples(outside the picture for example) shall be equalto the closest available fullpel sampleSmaller pel interpolation:--------------------------if diag_mc is set then points which lie on a line between 2 vertically, horizontally or diagonally adjacent halfpel points shall be interpolatedlinearly with rounding to nearest and halfway values rounded up.points which lie on 2 diagonals at the same time should only use the onediagonal not containing the fullpel point F--> O q O<--h1-> O q O<--F v \/v \/v O O O O O O O|/|\|q q q q q|/|\|O O O O O O O ^/\ ^/\ ^ h2--> O q O<--h3-> O q O<--h2 v \/v \/v O O O O O O O|\|/|q q q q q|\|/|O O O O O O O ^/\ ^/\ ^ F--> O q O<--h1-> O q O<--Fthe remaining points shall be bilinearly interpolated from theup to 4 surrounding halfpel and fullpel points, again rounding should be tonearest and halfway values rounded upcompliant Snow decoders MUST support 1-1/8 pel luma and 1/2-1/16 pel chromainterpolation at leastOverlapped block motion compensation:-------------------------------------FIXMELL band prediction:===================Each sample in the LL0 subband is predicted by the median of the left, top andleft+top-topleft samples, samples outside the subband shall be considered tobe 0. To reverse this prediction in the decoder apply the following.for(y=0;y< height;y++){ for(x=0;x< width;x++){ sample[y][x]+=median(sample[y-1][x], sample[y][x-1], sample[y-1][x]+sample[y][x-1]-sample[y-1][x-1]);}}sample[-1][ *]=sample[ *][-1]=0;width, height here are the width and height of the LL0 subband not of the finalvideoDequantization:===============FIXMEWavelet Transform:==================Snow supports 2 wavelet transforms, the symmetric biorthogonal 5/3 integertransform and an integer approximation of the symmetric biorthogonal 9/7daubechies wavelet.2D IDWT(inverse discrete wavelet transform) --------------------------------------------The 2D IDWT applies a 2D filter recursively, each time combining the4 lowest frequency subbands into a single subband until only 1 subbandremains.The 2D filter is done by first applying a 1D filter in the vertical directionand then applying it in the horizontal one. --------------- --------------- --------------- ---------------|LL0|HL0|||||||||||||---+---|HL1||L0|H0|HL1||LL1|HL1|||||LH0|HH0|||||||||||||-------+-------|-> L1 H1 LH1 HH1 LH1 HH1 LH1 HH1 this can end with a L or a H
static void copy(const float *p1, float *p2, const int length)
#define init_mc_funcs(idx, dir, mx, my, sz, pfx)
#define define_8tap_2d_fn(op, filter, sz)
#define init_fpel(idx1, idx2, sz, type)
#define declare_fpel(type, sz)
#define init_mc_func(idx1, idx2, op, filter, fname, dir, mx, my, sz, pfx)
#define decl_filter_funcs(op, dir, sz)