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porting vp3 idct over to lavc idct api

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Originally committed as revision 4257 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2005-05-17 11:12:04 +00:00
parent ea191e08d6
commit 8b6103da0f
5 changed files with 141 additions and 81 deletions
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1
libavcodec/avcodec.h
View File

@ -1177,6 +1177,7 @@ typedef struct AVCodecContext {
#define FF_IDCT_SH4 9
#define FF_IDCT_SIMPLEARM 10
#define FF_IDCT_H264 11
#define FF_IDCT_VP3 12
/**
* slice count.

9
libavcodec/dsputil.c
View File

@ -3643,6 +3643,11 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
c->idct_add= ff_jref_idct_add;
c->idct = j_rev_dct;
c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
}else if(avctx->idct_algo==FF_IDCT_VP3){
c->idct_put= ff_vp3_idct_put_c;
c->idct_add= ff_vp3_idct_add_c;
c->idct = ff_vp3_idct_c;
c->idct_permutation_type= FF_NO_IDCT_PERM;
}else{ //accurate/default
c->idct_put= simple_idct_put;
c->idct_add= simple_idct_add;
@ -3653,10 +3658,6 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
c->h264_idct_add= ff_h264_idct_add_c;
/* VP3 DSP support */
c->vp3_dsp_init = vp3_dsp_init_c;
c->vp3_idct = vp3_idct_c;
c->get_pixels = get_pixels_c;
c->diff_pixels = diff_pixels_c;
c->put_pixels_clamped = put_pixels_clamped_c;

14
libavcodec/dsputil.h
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@ -68,17 +68,9 @@ extern uint32_t squareTbl[512];
extern uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
/* VP3 DSP functions */
void vp3_dsp_init_c(void);
void vp3_idct_c(int16_t *input_data, int16_t *dequant_matrix,
int coeff_count, DCTELEM *output_data);
void vp3_dsp_init_mmx(void);
void vp3_idct_mmx(int16_t *input_data, int16_t *dequant_matrix,
int coeff_count, DCTELEM *output_data);
void vp3_dsp_init_sse2(void);
void vp3_idct_sse2(int16_t *input_data, int16_t *dequant_matrix,
int coeff_count, DCTELEM *output_data);
void ff_vp3_idct_c(DCTELEM *block/* align 16*/);
void ff_vp3_idct_put_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
void ff_vp3_idct_add_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
/* minimum alignment rules ;)
if u notice errors in the align stuff, need more alignment for some asm code for some cpu

44
libavcodec/vp3.c
View File

@ -2053,7 +2053,7 @@ static void render_fragments(Vp3DecodeContext *s,
int height,
int plane /* 0 = Y, 1 = U, 2 = V */)
{
int x, y;
int x, y, j;
int m, n;
int i = first_fragment;
int16_t *dequantizer;
@ -2188,22 +2188,33 @@ av_log(s->avctx, AV_LOG_ERROR, " help! got beefy vector! (%X, %X)\n", motion_x,
i, s->all_fragments[i].coding_method,
s->all_fragments[i].coeffs[0], dequantizer[0]);
/* invert DCT and place (or add) in final output */
s->dsp.vp3_idct(s->all_fragments[i].coeffs,
dequantizer,
s->all_fragments[i].coeff_count,
output_samples);
memset(s->all_fragments[i].coeffs, 0, 64*sizeof(DCTELEM));
if (s->all_fragments[i].coding_method == MODE_INTRA) {
s->dsp.put_signed_pixels_clamped(output_samples,
output_plane + s->all_fragments[i].first_pixel,
stride);
} else {
s->dsp.add_pixels_clamped(output_samples,
output_plane + s->all_fragments[i].first_pixel,
stride);
if(s->avctx->idct_algo==FF_IDCT_VP3){
for (j = 0; j < 64; j++) {
s->all_fragments[i].coeffs[j] *= dequantizer[j];
}
}else{
for (j = 0; j < 64; j++) {
s->all_fragments[i].coeffs[j]= (dequantizer[j] * s->all_fragments[i].coeffs[j] + 2) >> 2;
}
}
/* invert DCT and place (or add) in final output */
if (s->all_fragments[i].coding_method == MODE_INTRA) {
if(s->avctx->idct_algo!=FF_IDCT_VP3)
s->all_fragments[i].coeffs[0] += 128<<3;
s->dsp.idct_put(
output_plane + s->all_fragments[i].first_pixel,
stride,
s->all_fragments[i].coeffs);
} else {
s->dsp.idct_add(
output_plane + s->all_fragments[i].first_pixel,
stride,
s->all_fragments[i].coeffs);
}
memset(s->all_fragments[i].coeffs, 0, 64*sizeof(DCTELEM));
debug_idct("block after idct_%s():\n",
(s->all_fragments[i].coding_method == MODE_INTRA)?
"put" : "add");
@ -2496,8 +2507,9 @@ static int vp3_decode_init(AVCodecContext *avctx)
#endif
avctx->pix_fmt = PIX_FMT_YUV420P;
avctx->has_b_frames = 0;
if(avctx->idct_algo==FF_IDCT_AUTO)
avctx->idct_algo=FF_IDCT_VP3;
dsputil_init(&s->dsp, avctx);
s->dsp.vp3_dsp_init();
/* initialize to an impossible value which will force a recalculation
* in the first frame decode */

154
libavcodec/vp3dsp.c
View File

@ -36,29 +36,17 @@
#define xC6S2 25080
#define xC7S1 12785
void vp3_dsp_init_c(void)
static always_inline void idct(uint8_t *dst, int stride, int16_t *input, int type)
{
/* nop */
}
int16_t *ip = input;
uint8_t *cm = cropTbl + MAX_NEG_CROP;
void vp3_idct_c(int16_t *input_data, int16_t *dequant_matrix,
int coeff_count, int16_t *output_data)
{
int32_t dequantized_data[64];
int32_t *ip = dequantized_data;
int16_t *op = output_data;
int32_t A_, B_, C_, D_, _Ad, _Bd, _Cd, _Dd, E_, F_, G_, H_;
int32_t _Ed, _Gd, _Add, _Bdd, _Fd, _Hd;
int32_t t1, t2;
int A_, B_, C_, D_, _Ad, _Bd, _Cd, _Dd, E_, F_, G_, H_;
int _Ed, _Gd, _Add, _Bdd, _Fd, _Hd;
int t1, t2;
int i, j;
/* de-zigzag and dequantize */
for (i = 0; i < coeff_count; i++) {
dequantized_data[i] = dequant_matrix[i] * input_data[i];
}
/* Inverse DCT on the rows now */
for (i = 0; i < 8; i++) {
/* Check for non-zero values */
@ -131,28 +119,28 @@ void vp3_idct_c(int16_t *input_data, int16_t *dequant_matrix,
_Hd = _Bd + H_;
/* Final sequence of operations over-write original inputs. */
ip[0] = (int16_t)((_Gd + _Cd ) >> 0);
ip[7] = (int16_t)((_Gd - _Cd ) >> 0);
ip[0] = _Gd + _Cd ;
ip[7] = _Gd - _Cd ;
ip[1] = (int16_t)((_Add + _Hd ) >> 0);
ip[2] = (int16_t)((_Add - _Hd ) >> 0);
ip[1] = _Add + _Hd;
ip[2] = _Add - _Hd;
ip[3] = (int16_t)((_Ed + _Dd ) >> 0);
ip[4] = (int16_t)((_Ed - _Dd ) >> 0);
ip[3] = _Ed + _Dd ;
ip[4] = _Ed - _Dd ;
ip[5] = (int16_t)((_Fd + _Bdd ) >> 0);
ip[6] = (int16_t)((_Fd - _Bdd ) >> 0);
ip[5] = _Fd + _Bdd;
ip[6] = _Fd - _Bdd;
}
ip += 8; /* next row */
}
ip = dequantized_data;
ip = input;
for ( i = 0; i < 8; i++) {
/* Check for non-zero values (bitwise or faster than ||) */
if ( ip[0 * 8] | ip[1 * 8] | ip[2 * 8] | ip[3 * 8] |
if ( ip[1 * 8] | ip[2 * 8] | ip[3 * 8] |
ip[4 * 8] | ip[5 * 8] | ip[6 * 8] | ip[7 * 8] ) {
t1 = (int32_t)(xC1S7 * ip[1*8]);
@ -222,37 +210,103 @@ void vp3_idct_c(int16_t *input_data, int16_t *dequant_matrix,
_Fd = F_ - _Ad;
_Hd = _Bd + H_;
if(type==1){ //HACK
_Gd += 16*128;
_Add+= 16*128;
_Ed += 16*128;
_Fd += 16*128;
}
_Gd += IdctAdjustBeforeShift;
_Add += IdctAdjustBeforeShift;
_Ed += IdctAdjustBeforeShift;
_Fd += IdctAdjustBeforeShift;
/* Final sequence of operations over-write original inputs. */
op[0*8] = (int16_t)((_Gd + _Cd ) >> 4);
op[7*8] = (int16_t)((_Gd - _Cd ) >> 4);
op[1*8] = (int16_t)((_Add + _Hd ) >> 4);
op[2*8] = (int16_t)((_Add - _Hd ) >> 4);
op[3*8] = (int16_t)((_Ed + _Dd ) >> 4);
op[4*8] = (int16_t)((_Ed - _Dd ) >> 4);
op[5*8] = (int16_t)((_Fd + _Bdd ) >> 4);
op[6*8] = (int16_t)((_Fd - _Bdd ) >> 4);
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){
dst[0*stride] = cm[(_Gd + _Cd ) >> 4];
dst[7*stride] = cm[(_Gd - _Cd ) >> 4];
dst[1*stride] = cm[(_Add + _Hd ) >> 4];
dst[2*stride] = cm[(_Add - _Hd ) >> 4];
dst[3*stride] = cm[(_Ed + _Dd ) >> 4];
dst[4*stride] = cm[(_Ed - _Dd ) >> 4];
dst[5*stride] = cm[(_Fd + _Bdd ) >> 4];
dst[6*stride] = cm[(_Fd - _Bdd ) >> 4];
}else{
dst[0*stride] = cm[dst[0*stride] + ((_Gd + _Cd ) >> 4)];
dst[7*stride] = cm[dst[7*stride] + ((_Gd - _Cd ) >> 4)];
dst[1*stride] = cm[dst[1*stride] + ((_Add + _Hd ) >> 4)];
dst[2*stride] = cm[dst[2*stride] + ((_Add - _Hd ) >> 4)];
dst[3*stride] = cm[dst[3*stride] + ((_Ed + _Dd ) >> 4)];
dst[4*stride] = cm[dst[4*stride] + ((_Ed - _Dd ) >> 4)];
dst[5*stride] = cm[dst[5*stride] + ((_Fd + _Bdd ) >> 4)];
dst[6*stride] = cm[dst[6*stride] + ((_Fd - _Bdd ) >> 4)];
}
} else {
op[0*8] = 0;
op[7*8] = 0;
op[1*8] = 0;
op[2*8] = 0;
op[3*8] = 0;
op[4*8] = 0;
op[5*8] = 0;
op[6*8] = 0;
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){
dst[0*stride]=
dst[1*stride]=
dst[2*stride]=
dst[3*stride]=
dst[4*stride]=
dst[5*stride]=
dst[6*stride]=
dst[7*stride]= 128 + ((xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
}else{
if(ip[0*8]){
int v= ((xC4S4 * ip[0*8] + (IdctAdjustBeforeShift<<16))>>20);
dst[0*stride] = cm[dst[0*stride] + v];
dst[1*stride] = cm[dst[1*stride] + v];
dst[2*stride] = cm[dst[2*stride] + v];
dst[3*stride] = cm[dst[3*stride] + v];
dst[4*stride] = cm[dst[4*stride] + v];
dst[5*stride] = cm[dst[5*stride] + v];
dst[6*stride] = cm[dst[6*stride] + v];
dst[7*stride] = cm[dst[7*stride] + v];
}
}
}
ip++; /* next column */
op++;
dst++;
}
}
void ff_vp3_idct_c(DCTELEM *block/* align 16*/){
idct(NULL, 0, block, 0);
}
void ff_vp3_idct_put_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/){
idct(dest, line_size, block, 1);
}
void ff_vp3_idct_add_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/){
idct(dest, line_size, block, 2);
}