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vp3: Use full transpose for all IDCTs

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This way, the special IDCT permutations are no longer needed. This
is similar to how H264 does it, and removes the dsputil dependency
imposed by the scantable code.

Also remove the unused type == 0 cases from the plain C version
of the idct.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Ronald S. Bultje 2013-03-12 07:28:12 -07:00 committed by Martin Storsjö
parent 5941978e71
commit 015821229f
12 changed files with 169 additions and 151 deletions
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1
libavcodec/arm/vp3dsp_init_arm.c
View File

@ -41,6 +41,5 @@ av_cold void ff_vp3dsp_init_arm(VP3DSPContext *c, int flags)
c->idct_dc_add = ff_vp3_idct_dc_add_neon;
c->v_loop_filter = ff_vp3_v_loop_filter_neon;
c->h_loop_filter = ff_vp3_h_loop_filter_neon;
c->idct_perm = FF_TRANSPOSE_IDCT_PERM;
}
}

1
libavcodec/bfin/vp3_bfin.c
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@ -61,6 +61,5 @@ av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags)
if (!(flags & CODEC_FLAG_BITEXACT)) {
c->idct_add = bfin_vp3_idct_add;
c->idct_put = bfin_vp3_idct_put;
c->idct_perm = FF_TRANSPOSE_IDCT_PERM;
}
}

1
libavcodec/ppc/vp3dsp_altivec.c
View File

@ -184,7 +184,6 @@ av_cold void ff_vp3dsp_init_ppc(VP3DSPContext *c, int flags)
if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
c->idct_put = vp3_idct_put_altivec;
c->idct_add = vp3_idct_add_altivec;
c->idct_perm = FF_TRANSPOSE_IDCT_PERM;
}
#endif
}

13
libavcodec/vp3.c
View File

@ -136,6 +136,7 @@ typedef struct Vp3DecodeContext {
ThreadFrame current_frame;
int keyframe;
uint8_t idct_permutation[64];
uint8_t idct_scantable[64];
DSPContext dsp;
VideoDSPContext vdsp;
VP3DSPContext vp3dsp;
@ -173,8 +174,6 @@ typedef struct Vp3DecodeContext {
int8_t (*motion_val[2])[2];
ScanTable scantable;
/* tables */
uint16_t coded_dc_scale_factor[64];
uint32_t coded_ac_scale_factor[64];
@ -1351,7 +1350,7 @@ static inline int vp3_dequant(Vp3DecodeContext *s, Vp3Fragment *frag,
int plane, int inter, int16_t block[64])
{
int16_t *dequantizer = s->qmat[frag->qpi][inter][plane];
uint8_t *perm = s->scantable.permutated;
uint8_t *perm = s->idct_scantable;
int i = 0;
do {
@ -1700,8 +1699,12 @@ static av_cold int vp3_decode_init(AVCodecContext *avctx)
ff_videodsp_init(&s->vdsp, 8);
ff_vp3dsp_init(&s->vp3dsp, avctx->flags);
ff_init_scantable_permutation(s->idct_permutation, s->vp3dsp.idct_perm);
ff_init_scantable(s->idct_permutation, &s->scantable, ff_zigzag_direct);
for (i = 0; i < 64; i++) {
#define T(x) (x >> 3) | ((x & 7) << 3)
s->idct_permutation[i] = T(i);
s->idct_scantable[i] = T(ff_zigzag_direct[i]);
#undef T
}
/* initialize to an impossible value which will force a recalculation
* in the first frame decode */

152
libavcodec/vp3dsp.c
View File

@ -54,7 +54,58 @@ static av_always_inline void idct(uint8_t *dst, int stride, int16_t *input, int
/* Inverse DCT on the rows now */
for (i = 0; i < 8; i++) {
/* Check for non-zero values */
if ( ip[0] | ip[1] | ip[2] | ip[3] | ip[4] | ip[5] | ip[6] | ip[7] ) {
if ( ip[0 * 8] | ip[1 * 8] | ip[2 * 8] | ip[3 * 8] |
ip[4 * 8] | ip[5 * 8] | ip[6 * 8] | ip[7 * 8] ) {
A = M(xC1S7, ip[1 * 8]) + M(xC7S1, ip[7 * 8]);
B = M(xC7S1, ip[1 * 8]) - M(xC1S7, ip[7 * 8]);
C = M(xC3S5, ip[3 * 8]) + M(xC5S3, ip[5 * 8]);
D = M(xC3S5, ip[5 * 8]) - M(xC5S3, ip[3 * 8]);
Ad = M(xC4S4, (A - C));
Bd = M(xC4S4, (B - D));
Cd = A + C;
Dd = B + D;
E = M(xC4S4, (ip[0 * 8] + ip[4 * 8]));
F = M(xC4S4, (ip[0 * 8] - ip[4 * 8]));
G = M(xC2S6, ip[2 * 8]) + M(xC6S2, ip[6 * 8]);
H = M(xC6S2, ip[2 * 8]) - M(xC2S6, ip[6 * 8]);
Ed = E - G;
Gd = E + G;
Add = F + Ad;
Bdd = Bd - H;
Fd = F - Ad;
Hd = Bd + H;
/* Final sequence of operations over-write original inputs. */
ip[0 * 8] = Gd + Cd ;
ip[7 * 8] = Gd - Cd ;
ip[1 * 8] = Add + Hd;
ip[2 * 8] = Add - Hd;
ip[3 * 8] = Ed + Dd ;
ip[4 * 8] = Ed - Dd ;
ip[5 * 8] = Fd + Bdd;
ip[6 * 8] = Fd - Bdd;
}
ip += 1; /* next row */
}
ip = input;
for ( i = 0; i < 8; i++) {
/* Check for non-zero values (bitwise or faster than ||) */
if ( ip[1] | ip[2] | ip[3] |
ip[4] | ip[5] | ip[6] | ip[7] ) {
A = M(xC1S7, ip[1]) + M(xC7S1, ip[7]);
B = M(xC7S1, ip[1]) - M(xC1S7, ip[7]);
C = M(xC3S5, ip[3]) + M(xC5S3, ip[5]);
@ -66,8 +117,13 @@ static av_always_inline void idct(uint8_t *dst, int stride, int16_t *input, int
Cd = A + C;
Dd = B + D;
E = M(xC4S4, (ip[0] + ip[4]));
F = M(xC4S4, (ip[0] - ip[4]));
E = M(xC4S4, (ip[0] + ip[4])) + 8;
F = M(xC4S4, (ip[0] - ip[4])) + 8;
if(type==1){ //HACK
E += 16*128;
F += 16*128;
}
G = M(xC2S6, ip[2]) + M(xC6S2, ip[6]);
H = M(xC6S2, ip[2]) - M(xC2S6, ip[6]);
@ -82,74 +138,7 @@ static av_always_inline void idct(uint8_t *dst, int stride, int16_t *input, int
Hd = Bd + H;
/* Final sequence of operations over-write original inputs. */
ip[0] = Gd + Cd ;
ip[7] = Gd - Cd ;
ip[1] = Add + Hd;
ip[2] = Add - Hd;
ip[3] = Ed + Dd ;
ip[4] = Ed - Dd ;
ip[5] = Fd + Bdd;
ip[6] = Fd - Bdd;
}
ip += 8; /* next row */
}
ip = input;
for ( i = 0; i < 8; i++) {
/* Check for non-zero values (bitwise or faster than ||) */
if ( ip[1 * 8] | ip[2 * 8] | ip[3 * 8] |
ip[4 * 8] | ip[5 * 8] | ip[6 * 8] | ip[7 * 8] ) {
A = M(xC1S7, ip[1*8]) + M(xC7S1, ip[7*8]);
B = M(xC7S1, ip[1*8]) - M(xC1S7, ip[7*8]);
C = M(xC3S5, ip[3*8]) + M(xC5S3, ip[5*8]);
D = M(xC3S5, ip[5*8]) - M(xC5S3, ip[3*8]);
Ad = M(xC4S4, (A - C));
Bd = M(xC4S4, (B - D));
Cd = A + C;
Dd = B + D;
E = M(xC4S4, (ip[0*8] + ip[4*8])) + 8;
F = M(xC4S4, (ip[0*8] - ip[4*8])) + 8;
if(type==1){ //HACK
E += 16*128;
F += 16*128;
}
G = M(xC2S6, ip[2*8]) + M(xC6S2, ip[6*8]);
H = M(xC6S2, ip[2*8]) - M(xC2S6, ip[6*8]);
Ed = E - G;
Gd = E + G;
Add = F + Ad;
Bdd = Bd - H;
Fd = F - Ad;
Hd = Bd + H;
/* Final sequence of operations over-write original inputs. */
if(type==0){
ip[0*8] = (Gd + Cd ) >> 4;
ip[7*8] = (Gd - Cd ) >> 4;
ip[1*8] = (Add + Hd ) >> 4;
ip[2*8] = (Add - Hd ) >> 4;
ip[3*8] = (Ed + Dd ) >> 4;
ip[4*8] = (Ed - Dd ) >> 4;
ip[5*8] = (Fd + Bdd ) >> 4;
ip[6*8] = (Fd - Bdd ) >> 4;
}else if(type==1){
if (type == 1) {
dst[0*stride] = av_clip_uint8((Gd + Cd ) >> 4);
dst[7*stride] = av_clip_uint8((Gd - Cd ) >> 4);
@ -176,16 +165,7 @@ static av_always_inline void idct(uint8_t *dst, int stride, int16_t *input, int
}
} else {
if(type==0){
ip[0*8] =
ip[1*8] =
ip[2*8] =
ip[3*8] =
ip[4*8] =
ip[5*8] =
ip[6*8] =
ip[7*8] = ((xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
}else if(type==1){
if (type == 1) {
dst[0*stride]=
dst[1*stride]=
dst[2*stride]=
@ -193,10 +173,10 @@ static av_always_inline void idct(uint8_t *dst, int stride, int16_t *input, int
dst[4*stride]=
dst[5*stride]=
dst[6*stride]=
dst[7*stride]= av_clip_uint8(128 + ((xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20));
dst[7*stride]= av_clip_uint8(128 + ((xC4S4 * ip[0] + (IdctAdjustBeforeShift<<16))>>20));
}else{
if(ip[0*8]){
int v= ((xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
if(ip[0]){
int v= ((xC4S4 * ip[0] + (IdctAdjustBeforeShift<<16))>>20);
dst[0*stride] = av_clip_uint8(dst[0*stride] + v);
dst[1*stride] = av_clip_uint8(dst[1*stride] + v);
dst[2*stride] = av_clip_uint8(dst[2*stride] + v);
@ -209,7 +189,7 @@ static av_always_inline void idct(uint8_t *dst, int stride, int16_t *input, int
}
}
ip++; /* next column */
ip += 8; /* next column */
dst++;
}
}
@ -307,8 +287,6 @@ av_cold void ff_vp3dsp_init(VP3DSPContext *c, int flags)
c->v_loop_filter = vp3_v_loop_filter_c;
c->h_loop_filter = vp3_h_loop_filter_c;
c->idct_perm = FF_NO_IDCT_PERM;
if (ARCH_ARM)
ff_vp3dsp_init_arm(c, flags);
if (ARCH_BFIN)

2
libavcodec/vp3dsp.h
View File

@ -43,8 +43,6 @@ typedef struct VP3DSPContext {
void (*idct_dc_add)(uint8_t *dest, int line_size, int16_t *block);
void (*v_loop_filter)(uint8_t *src, int stride, int *bounding_values);
void (*h_loop_filter)(uint8_t *src, int stride, int *bounding_values);
int idct_perm;
} VP3DSPContext;
void ff_vp3dsp_init(VP3DSPContext *c, int flags);

2
libavcodec/vp5.c
View File

@ -173,7 +173,7 @@ static void vp5_parse_coeff(VP56Context *s)
{
VP56RangeCoder *c = &s->c;
VP56Model *model = s->modelp;
uint8_t *permute = s->scantable.permutated;
uint8_t *permute = s->idct_scantable;
uint8_t *model1, *model2;
int coeff, sign, coeff_idx;
int b, i, cg, idx, ctx, ctx_last;

9
libavcodec/vp56.c
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@ -263,7 +263,7 @@ static VP56mb vp56_decode_mv(VP56Context *s, int row, int col)
static void vp56_add_predictors_dc(VP56Context *s, VP56Frame ref_frame)
{
int idx = s->scantable.permutated[0];
int idx = s->idct_scantable[0];
int b;
for (b=0; b<6; b++) {
@ -661,8 +661,11 @@ av_cold int ff_vp56_init(AVCodecContext *avctx, int flip, int has_alpha)
ff_videodsp_init(&s->vdsp, 8);
ff_vp3dsp_init(&s->vp3dsp, avctx->flags);
ff_vp56dsp_init(&s->vp56dsp, avctx->codec->id);
ff_init_scantable_permutation(s->dsp.idct_permutation, s->vp3dsp.idct_perm);
ff_init_scantable(s->dsp.idct_permutation, &s->scantable,ff_zigzag_direct);
for (i = 0; i < 64; i++) {
#define T(x) (x >> 3) | ((x & 7) << 3)
s->idct_scantable[i] = T(ff_zigzag_direct[i]);
#undef T
}
for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++) {
s->frames[i] = av_frame_alloc();

2
libavcodec/vp56.h
View File

@ -100,7 +100,7 @@ struct vp56_context {
VideoDSPContext vdsp;
VP3DSPContext vp3dsp;
VP56DSPContext vp56dsp;
ScanTable scantable;
uint8_t idct_scantable[64];
AVFrame *frames[4];
uint8_t *edge_emu_buffer_alloc;
uint8_t *edge_emu_buffer;

4
libavcodec/vp6.c
View File

@ -368,7 +368,7 @@ static unsigned vp6_get_nb_null(VP56Context *s)
static void vp6_parse_coeff_huffman(VP56Context *s)
{
VP56Model *model = s->modelp;
uint8_t *permute = s->scantable.permutated;
uint8_t *permute = s->idct_scantable;
VLC *vlc_coeff;
int coeff, sign, coeff_idx;
int b, cg, idx;
@ -428,7 +428,7 @@ static void vp6_parse_coeff(VP56Context *s)
{
VP56RangeCoder *c = s->ccp;
VP56Model *model = s->modelp;
uint8_t *permute = s->scantable.permutated;
uint8_t *permute = s->idct_scantable;
uint8_t *model1, *model2, *model3;
int coeff, sign, coeff_idx;
int b, i, cg, idx, ctx;

129
libavcodec/x86/vp3dsp.asm
View File

@ -501,22 +501,22 @@ cglobal vp3_h_loop_filter, 3, 4
; at this point, function has completed dequantization + dezigzag +
; partial transposition; now do the idct itself
%define I(x) [%1+16* x ]
%define J(x) [%1+16*(x-4)+8]
RowIDCT
Transpose
%define I(x) [%1+16* x +64]
%define J(x) [%1+16*(x-4)+72]
RowIDCT
Transpose
%define I(x) [%1+16*x]
%define J(x) [%1+16*x]
ColumnIDCT
RowIDCT
Transpose
%define I(x) [%1+16*x+8]
%define J(x) [%1+16*x+8]
RowIDCT
Transpose
%define I(x) [%1+16* x]
%define J(x) [%1+16*(x-4)+8]
ColumnIDCT
%define I(x) [%1+16* x +64]
%define J(x) [%1+16*(x-4)+72]
ColumnIDCT
%endif ; mmsize == 16/8
%endmacro
@ -534,10 +534,17 @@ cglobal vp3_idct_put, 3, 4, 9
mova m1, [r2+mmsize*2+%%i]
mova m2, [r2+mmsize*4+%%i]
mova m3, [r2+mmsize*6+%%i]
%if mmsize == 8
packsswb m0, [r2+mmsize*8+%%i]
packsswb m1, [r2+mmsize*10+%%i]
packsswb m2, [r2+mmsize*12+%%i]
packsswb m3, [r2+mmsize*14+%%i]
%else
packsswb m0, [r2+mmsize*1+%%i]
packsswb m1, [r2+mmsize*3+%%i]
packsswb m2, [r2+mmsize*5+%%i]
packsswb m3, [r2+mmsize*7+%%i]
%endif
paddb m0, m4
paddb m1, m4
paddb m2, m4
@ -561,7 +568,7 @@ cglobal vp3_idct_put, 3, 4, 9
movq [r0+r1*2], m3
movhps [r0+r3 ], m3
%endif
%assign %%i %%i+64
%assign %%i %%i+8
%endrep
pxor m0, m0
@ -575,47 +582,81 @@ cglobal vp3_idct_put, 3, 4, 9
cglobal vp3_idct_add, 3, 4, 9
VP3_IDCT r2
mov r3, 4
pxor m4, m4
movsxdifnidn r1, r1d
.loop:
lea r3, [r1*3]
pxor m4, m4
%if mmsize == 16
%assign %%i 0
%rep 2
movq m0, [r0]
movq m1, [r0+r1]
%if mmsize == 8
mova m2, m0
mova m3, m1
%endif
movq m2, [r0+r1*2]
movq m3, [r0+r3]
punpcklbw m0, m4
punpcklbw m1, m4
%if mmsize == 8
punpckhbw m2, m4
punpckhbw m3, m4
%endif
paddsw m0, [r2+ 0]
paddsw m1, [r2+16]
%if mmsize == 8
paddsw m2, [r2+ 8]
paddsw m3, [r2+24]
packuswb m0, m2
packuswb m1, m3
%else ; mmsize == 16
punpcklbw m2, m4
punpcklbw m3, m4
paddsw m0, [r2+ 0+%%i]
paddsw m1, [r2+16+%%i]
paddsw m2, [r2+32+%%i]
paddsw m3, [r2+48+%%i]
packuswb m0, m1
%endif
packuswb m2, m3
movq [r0 ], m0
%if mmsize == 8
movq [r0+r1], m1
%else ; mmsize == 16
movhps [r0+r1], m0
movhps [r0+r1 ], m0
movq [r0+r1*2], m2
movhps [r0+r3 ], m2
%if %%i == 0
lea r0, [r0+r1*4]
%endif
lea r0, [r0+r1*2]
%assign %%offset 0
%rep 32/mmsize
mova [r2+%%offset], m4
%assign %%offset %%offset+mmsize
%assign %%i %%i+64
%endrep
%else
%assign %%i 0
%rep 2
movq m0, [r0]
movq m1, [r0+r1]
movq m2, [r0+r1*2]
movq m3, [r0+r3]
movq m5, m0
movq m6, m1
movq m7, m2
punpcklbw m0, m4
punpcklbw m1, m4
punpcklbw m2, m4
punpckhbw m5, m4
punpckhbw m6, m4
punpckhbw m7, m4
paddsw m0, [r2+ 0+%%i]
paddsw m1, [r2+16+%%i]
paddsw m2, [r2+32+%%i]
paddsw m5, [r2+64+%%i]
paddsw m6, [r2+80+%%i]
paddsw m7, [r2+96+%%i]
packuswb m0, m5
movq m5, m3
punpcklbw m3, m4
punpckhbw m5, m4
packuswb m1, m6
paddsw m3, [r2+48+%%i]
paddsw m5, [r2+112+%%i]
packuswb m2, m7
packuswb m3, m5
movq [r0 ], m0
movq [r0+r1 ], m1
movq [r0+r1*2], m2
movq [r0+r3 ], m3
%if %%i == 0
lea r0, [r0+r1*4]
%endif
%assign %%i %%i+8
%endrep
%endif
%assign %%i 0
%rep 128/mmsize
mova [r2+%%i], m4
%assign %%i %%i+mmsize
%endrep
add r2, 32
dec r3
jg .loop
RET
%endmacro

2
libavcodec/x86/vp3dsp_init.c
View File

@ -48,7 +48,6 @@ av_cold void ff_vp3dsp_init_x86(VP3DSPContext *c, int flags)
if (EXTERNAL_MMX(cpuflags)) {
c->idct_put = ff_vp3_idct_put_mmx;
c->idct_add = ff_vp3_idct_add_mmx;
c->idct_perm = FF_PARTTRANS_IDCT_PERM;
}
#endif
@ -64,6 +63,5 @@ av_cold void ff_vp3dsp_init_x86(VP3DSPContext *c, int flags)
if (EXTERNAL_SSE2(cpuflags)) {
c->idct_put = ff_vp3_idct_put_sse2;
c->idct_add = ff_vp3_idct_add_sse2;
c->idct_perm = FF_TRANSPOSE_IDCT_PERM;
}
}