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avfilter/vf_rotate: make int*90° rotates suck less speedwise
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -36,6 +36,8 @@
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#include "internal.h"
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#include "video.h"
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#include <float.h>
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static const char *var_names[] = {
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"in_w" , "iw", ///< width of the input video
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"in_h" , "ih", ///< height of the input video
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@ -308,6 +310,62 @@ static uint8_t *interpolate_bilinear(uint8_t *dst_color,
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return dst_color;
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}
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static av_always_inline void copy_elem(uint8_t *pout, const uint8_t *pin, int elem_size)
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{
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int v;
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switch (elem_size) {
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case 1:
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*pout = *pin;
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break;
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case 2:
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*((uint16_t *)pout) = *((uint16_t *)pin);
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break;
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case 3:
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v = AV_RB24(pin);
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AV_WB24(pout, v);
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break;
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case 4:
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*((uint32_t *)pout) = *((uint32_t *)pin);
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break;
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default:
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memcpy(pout, pin, elem_size);
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break;
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}
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}
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static av_always_inline void simple_rotate_internal(uint8_t *dst, const uint8_t *src, int src_linesize, int angle, int elem_size, int len)
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{
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int i;
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switch(angle) {
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case 0:
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memcpy(dst, src, elem_size * len);
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break;
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case 1:
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for (i = 0; i<len; i++)
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copy_elem(dst + i*elem_size, src + (len-i-1)*src_linesize, elem_size);
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break;
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case 2:
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for (i = 0; i<len; i++)
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copy_elem(dst + i*elem_size, src + (len-i-1)*elem_size, elem_size);
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break;
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case 3:
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for (i = 0; i<len; i++)
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copy_elem(dst + i*elem_size, src + i*src_linesize, elem_size);
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break;
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}
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}
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static av_always_inline void simple_rotate(uint8_t *dst, const uint8_t *src, int src_linesize, int angle, int elem_size, int len)
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{
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switch(elem_size) {
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case 1 : simple_rotate_internal(dst, src, src_linesize, angle, 1, len); break;
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case 2 : simple_rotate_internal(dst, src, src_linesize, angle, 2, len); break;
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case 3 : simple_rotate_internal(dst, src, src_linesize, angle, 3, len); break;
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case 4 : simple_rotate_internal(dst, src, src_linesize, angle, 4, len); break;
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default: simple_rotate_internal(dst, src, src_linesize, angle, elem_size, len); break;
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}
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}
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#define TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts)*av_q2d(tb))
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static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
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@ -331,6 +389,24 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
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x = xprime + xi + FIXP*(inw-1)/2;
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y = yprime + yi + FIXP*(inh-1)/2;
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if (fabs(rot->angle - 0) < FLT_EPSILON && outw == inw && outh == inh) {
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simple_rotate(out->data[plane] + j * out->linesize[plane],
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in->data[plane] + j * in->linesize[plane],
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in->linesize[plane], 0, rot->draw.pixelstep[plane], outw);
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} else if (fabs(rot->angle - M_PI/2) < FLT_EPSILON && outw == inh && outh == inw) {
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simple_rotate(out->data[plane] + j * out->linesize[plane],
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in->data[plane] + j * rot->draw.pixelstep[plane],
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in->linesize[plane], 1, rot->draw.pixelstep[plane], outw);
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} else if (fabs(rot->angle - M_PI) < FLT_EPSILON && outw == inw && outh == inh) {
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simple_rotate(out->data[plane] + j * out->linesize[plane],
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in->data[plane] + (outh-j-1) * in->linesize[plane],
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in->linesize[plane], 2, rot->draw.pixelstep[plane], outw);
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} else if (fabs(rot->angle - 3*M_PI/2) < FLT_EPSILON && outw == inh && outh == inw) {
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simple_rotate(out->data[plane] + j * out->linesize[plane],
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in->data[plane] + (outh-j-1) * rot->draw.pixelstep[plane],
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in->linesize[plane], 3, rot->draw.pixelstep[plane], outw);
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} else {
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for (i = 0; i < outw; i++) {
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int32_t v;
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int x1, y1;
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@ -373,6 +449,7 @@ static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
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x += c;
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y -= s;
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}
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}
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xprime += s;
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yprime += c;
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}
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