--- /dev/null
+#include "boxblur.h"
+// from ffmpeg vf_boxblur
+
+template<class dst_t, class src_t> static inline
+void blurt(dst_t *dst, int dst_step, src_t *src, int src_step,
+ int len, int radius, float s)
+{
+ const int length = radius*2 + 1;
+ const int inv = s * ((1<<16) + length/2)/length;
+ int x, n, sum = src[radius*src_step];
+
+ for( x=0; x<radius; ++x )
+ sum += src[x*src_step]<<1;
+ sum = sum*inv + (1<<15);
+ for( x=0; x<=radius; ++x ) {
+ sum += (src[(radius+x)*src_step] - src[(radius-x)*src_step])*inv;
+ dst[x*dst_step] = sum>>16;
+ }
+ n = len - radius;
+ for( ; x<n; ++x ) {
+ sum += (src[(radius+x)*src_step] - src[(x-radius-1)*src_step])*inv;
+ dst[x*dst_step] = sum >>16;
+ }
+ for ( ; x<len; ++x ) {
+ sum += (src[(2*len-radius-x-1)*src_step] - src[(x-radius-1)*src_step])*inv;
+ dst[x*dst_step] = sum>>16;
+ }
+}
+// specialize const float *src
+template<class dst_t> static inline
+void blurt(dst_t *dst, int dst_step, const float *src, int src_step,
+ int len, int radius, float s)
+{
+ const float length = radius*2 + 1;
+ const float inv = s / length;
+ int x, n;
+ float sum = src[radius*src_step];
+ for( x=0; x<radius; ++x )
+ sum += src[x*src_step]*2;
+ sum = sum*inv;
+ for( x=0; x<=radius; ++x ) {
+ sum += (src[(radius+x)*src_step] - src[(radius-x)*src_step])*inv;
+ dst[x*dst_step] = sum;
+ }
+ n = len - radius;
+ for( ; x<n; ++x ) {
+ sum += (src[(radius+x)*src_step] - src[(x-radius-1)*src_step])*inv;
+ dst[x*dst_step] = sum;
+ }
+ for ( ; x<len; ++x ) {
+ sum += (src[(2*len-radius-x-1)*src_step] - src[(x-radius-1)*src_step])*inv;
+ dst[x*dst_step] = sum;
+ }
+}
+
+// s scales dst=src first pass
+template<class dst_t, class src_t> static inline
+void blur_power(dst_t *dst, int dst_step, src_t *src, int src_step,
+ int len, int radius, int power, float s)
+{
+ dst_t atemp[len], btemp[len];
+ dst_t *a = atemp, *b = btemp;
+ blurt(a, 1, src, src_step, len, radius, s);
+ while( power-- > 2 ) {
+ blurt(b, 1, (const dst_t*)a, 1, len, radius, 1);
+ dst_t *t = a; a = b; b = t;
+ }
+ if( power > 1 )
+ blurt(dst, dst_step, (const dst_t*)a, 1, len, radius, 1);
+ else
+ for( int i = 0; i<len; ++i ) dst[i*dst_step] = a[i];
+}
+
+
+BoxBlurPackage::BoxBlurPackage()
+ : LoadPackage()
+{
+}
+
+BoxBlurUnit::BoxBlurUnit(BoxBlur *box_blur)
+ : LoadClient(box_blur)
+{
+}
+
+template<class dst_t, class src_t>
+void BoxBlurUnit::blurt_package(LoadPackage *package)
+{
+ BoxBlur *box_blur = (BoxBlur *)server;
+ src_t *src_data = (src_t *)box_blur->src_data;
+ dst_t *dst_data = (dst_t *)box_blur->dst_data;
+ int radius = box_blur->radius;
+ int power = box_blur->power;
+ int vlen = box_blur->vlen;
+ int c0 = box_blur->c0, c1 = box_blur->c1;
+ int src_ustep = box_blur->src_ustep;
+ int dst_ustep = box_blur->dst_ustep;
+ int src_vstep = box_blur->src_vstep;
+ int dst_vstep = box_blur->dst_vstep;
+ BoxBlurPackage *pkg = (BoxBlurPackage*)package;
+ int u1 = pkg->u1, u2 = pkg->u2;
+ float s = 1.;
+ if( sizeof(src_t) != sizeof(dst_t) ) {
+ switch( sizeof(dst_t) ) {
+ case 1: s = sizeof(src_t)==2 ? 1/256. : 255.; break;
+ case 2: s = sizeof(src_t)==1 ? 256. : 65535.; break;
+ case 4: s = sizeof(src_t)==1 ? 1/256. : 1/65535.; break;
+ }
+ }
+ for( int u=u1; u<u2; ++u ) {
+ src_t *sp = src_data + u*src_ustep;
+ dst_t *dp = dst_data + u*dst_ustep;
+ for( int c=c0; c<=c1; ++c ) {
+ blur_power(dp+c, dst_vstep, sp+c, src_vstep,
+ vlen, radius, power, s);
+ }
+ }
+}
+
+void BoxBlurUnit::process_package(LoadPackage *package)
+{
+ BoxBlur *box_blur = (BoxBlur *)server;
+ int src_bpp = box_blur->src_bpp, dst_bpp = box_blur->dst_bpp;
+ switch( src_bpp ) {
+ case 1: switch( dst_bpp ) {
+ case 1: blurt_package<uint8_t, const uint8_t>(package); break;
+ case 2: blurt_package<uint16_t, const uint8_t>(package); break;
+ case 4: blurt_package<float, const uint8_t>(package); break;
+ }
+ break;
+ case 2: switch( dst_bpp ) {
+ case 1: blurt_package<uint8_t, const uint16_t>(package); break;
+ case 2: blurt_package<uint16_t, const uint16_t>(package); break;
+ case 4: blurt_package<float, const uint16_t>(package); break;
+ }
+ break;
+ case 4: switch( dst_bpp ) {
+ case 1: blurt_package<uint8_t, const float>(package); break;
+ case 2: blurt_package<uint16_t, const float>(package); break;
+ case 4: blurt_package<float, const float>(package); break;
+ }
+ break;
+ }
+}
+
+BoxBlur::BoxBlur(int cpus)
+ : LoadServer(cpus, cpus)
+{
+}
+BoxBlur::~BoxBlur()
+{
+}
+
+LoadClient* BoxBlur::new_client() { return new BoxBlurUnit(this); }
+LoadPackage* BoxBlur::new_package() { return new BoxBlurPackage(); }
+
+void BoxBlur::init_packages()
+{
+ int u = 0;
+ for( int i=0,n=LoadServer::get_total_packages(); i<n; ) {
+ BoxBlurPackage *pkg = (BoxBlurPackage*)get_package(i);
+ pkg->u1 = u;
+ pkg->u2 = u = (++i * ulen) / n;
+ }
+}
+
+//dst can equal src, requires geom(dst)==geom(src)
+//uv: 0=hblur, 1=vblur; comp: -1=rgb,0=r,1=g,2=b
+void BoxBlur::process(VFrame *dst, VFrame *src, int uv,
+ int radius, int power, int comp)
+{
+ this->radius = radius;
+ this->power = power;
+ this->uv = uv;
+ int src_w = src->get_w(), src_h = src->get_h();
+ ulen = !uv ? src_h : src_w;
+ vlen = !uv ? src_w : src_h;
+ c0 = comp<0 ? 0 : comp;
+ c1 = comp<0 ? 2 : comp;
+ src_data = src->get_data();
+ dst_data = dst->get_data();
+ int src_pixsz = BC_CModels::calculate_pixelsize(src->get_color_model());
+ int src_comps = BC_CModels::components(src->get_color_model());
+ src_bpp = src_pixsz / src_comps;
+ int dst_pixsz = BC_CModels::calculate_pixelsize(dst->get_color_model());
+ int dst_comps = BC_CModels::components(dst->get_color_model());
+ dst_bpp = dst_pixsz / dst_comps;
+ int dst_linsz = dst->get_bytes_per_line() / dst_bpp;
+ int src_linsz = src->get_bytes_per_line() / src_bpp;
+ src_ustep = !uv ? src_linsz : src_comps;
+ dst_ustep = !uv ? dst_linsz: dst_comps;
+ src_vstep = !uv ? src_comps : src_linsz;
+ dst_vstep = !uv ? dst_comps : dst_linsz;
+
+ process_packages();
+}
+
+void BoxBlur::hblur(VFrame *dst, VFrame *src, int radius, int power, int comp)
+{
+ process(dst, src, 0, radius, power, comp);
+}
+void BoxBlur::vblur(VFrame *dst, VFrame *src, int radius, int power, int comp)
+{
+ process(dst, src, 1, radius, power, comp);
+}
+void BoxBlur::blur(VFrame *dst, VFrame *src, int radius, int power, int comp)
+{
+ process(dst, src, 0, radius, power, comp);
+ process(dst, dst, 1, radius, power, comp);
+}
+
projects / goodguy / cinelerra.git / blobdiff