--- /dev/null
+#include "../libzmpeg3/libzmpeg3.h"
+#include "arraylist.h"
+#include "mediadb.h"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <time.h>
+#include <math.h>
+
+#include <sys/time.h>
+#include <sys/resource.h>
+
+// c++ `cat x86_64/c_flags` -c -o x86_64/cutads.o cutads.C
+// c++ -pthread -o x86_64/cutads x86_64/cutads.o x86_64/mediadb.o x86_64/filexml.o
+// ../libzmpeg3/x86_64/libzmpeg3.a ../db/x86_64/db.a -lX11
+
+using namespace std;
+#define fail(s) do { printf("fail %s%s:%d\n",__func__,#s,__LINE__); return 1; } while(0)
+
+/* missing from system headers, no /usr/include <linux/ioprio.h>
+ * IOPRIO_WHO_PROCESS, IOPRIO_CLASS_SHIFT, IOPRIO_CLASS_IDLE */
+enum { IOPRIO_CLASS_NONE, IOPRIO_CLASS_RT, IOPRIO_CLASS_BE, IOPRIO_CLASS_IDLE, };
+#define IO_CLASS(n) (((int)(n)) << 13)
+#define IO_WHO_PROCESS 1
+#include <sys/syscall.h>
+#include <asm/unistd.h>
+
+// commercial edge detection:
+// must have audio < min_audio
+// and within +- check_margin seconds of low audio
+// must have video < min_video or delta video > min_dvideo
+
+static double min_audio = 0.5e-3 * 32767; // (-63db quite quiet)
+static double min_video = 0.1 * 255; // (pretty dark)
+static double min_dvideo = 0.1 * 255; // (gittery)
+static double lo_video = 0.075 * 255; // (dark)
+static double hi_video = 0.925 * 255; // (light)
+static double check_margin = 1.0; // t-1.0..t+1.0 secs
+static double min_clip_time = 3; // ignore clips shorter than this
+static int video_cutoff = 15; // video outside color space
+
+MediaDb *db = 0;
+
+class Src;
+class Weights;
+class MarginFrame;
+class Margin;
+class Video;
+class Audio;
+class Scan;
+
+static int ioprio_set(int which, int who, int ioprio)
+{
+ return syscall(SYS_ioprio_set, which, who, ioprio);
+}
+
+static inline int clip(int v, int mn, int mx)
+{
+ return v<mn ? mn : v>mx ? mx : v;
+}
+
+
+
+class Src
+{
+ char path[1024];
+ zmpeg3_t* zsrc;
+public:
+ bool open() { return zsrc != 0; }
+ operator zmpeg3_t *() { return zsrc; }
+ zmpeg3_t *operator ->() { return zsrc; }
+ const char *asset_path() { return path; }
+
+ Src(const char *fn) {
+ strcpy(path, fn);
+ int ret; zsrc = new zmpeg3_t(path, ret,
+ ZIO_UNBUFFERED+ZIO_SINGLE_ACCESS);
+ if( ret ) { delete zsrc; zsrc = 0; }
+ }
+ ~Src() { delete zsrc; }
+};
+
+
+
+class Weights
+{
+ int cur;
+ ArrayList<double> positions;
+ ArrayList<double> values;
+public:
+ int prev() { return cur > 0 ? --cur : -1; }
+ int next() { return cur < positions.size()-1 ? ++cur : -1; }
+ double position() { return positions.get(cur); }
+ double value() { return values.get(cur); }
+ double next_value() { return values.get(cur++); }
+ int length() { return values.size() - cur; }
+ int find(double pos);
+ int locate(double pos);
+ double err(double start, double len, double irate,
+ double *iweights, int iframes);
+ void add(double p, double v) { positions.append(p); values.append(v); }
+ int minimum_forward(double start, double end, double &time);
+ int minimum_backward(double start, double end, double &time);
+ int video_forward(double start, double end, double &time);
+ int audio_forward(double start, double end, double &time);
+ int video_backward(double start, double end, double &time);
+ int audio_backward(double start, double end, double &time);
+ double get_weight(double pos);
+ double average(double pos, int len);
+ int save(double pos, double *wp, int len);
+ void write(const char *fn);
+ Weights() : cur(0) {}
+ ~Weights() {}
+};
+
+int Weights::find(double pos)
+{
+ int l = -1;
+ int r = positions.size();
+ while( (r - l) > 1 ) {
+ int i = (l+r) >> 1;
+ double v = positions.get(i);
+ if( pos == v ) return i;
+ if( pos > v ) l = i; else r = i;
+ }
+ return l;
+}
+
+int Weights::locate(double pos)
+{
+ int ret = find(pos);
+ if( ret < 0 ) ret = 0;
+ return cur = ret;
+}
+
+double Weights::
+err(double pos, double len, double irate,
+ double *iweights, int iframes)
+{
+// trim leading / trailing dark video
+ locate(pos);
+ if( position() > pos ) return 256.;
+ double end_pos = pos + len;
+ while( position() < end_pos ) {
+ if( value() >= min_video ) break;
+ if( next() < 0 ) return 256.;
+ }
+ int l = 0, n = 0;
+ double vv = 0, lvv = 0, dd = 0, ldd = 0, ldv = 0;
+ while( position() < end_pos ) {
+ int k = (position()-pos) * irate + 1./1001+0.5;
+ if( k >= 0 ) {
+ if( k >= iframes ) break;
+ double v = value(), dv = v - iweights[k];
+ vv += fabs(dv);
+ dd += fabs(dv - ldv); ldv = dv;
+ if( v > min_video ) { lvv = vv; ldd = dd; l = n; }
+ ++n;
+ }
+ if( next() < 0 ) break;
+ }
+
+ if( ldd < lvv && lvv < MEDIA_MEAN_ERRLMT*l ) lvv = ldd;
+ return !l ? MEDIA_WEIGHT_ERRLMT : lvv / l;
+}
+
+double Weights::
+get_weight(double pos)
+{
+ locate(pos);
+ return position() > pos ? -1 : value();
+}
+
+double Weights::
+average(double pos, int len)
+{
+ locate(pos);
+ int n = length();
+ if( len < n ) n = len;
+ double v = 0;
+ for( int i=len; --i>=0; ) v += next_value();
+ return n > 0 ? v / n : 256;
+}
+
+int Weights::
+save(double pos, double *wp, int len)
+{
+ locate(pos);
+ if( position() > pos ) fail();
+ if( length() < len ) fail();
+ for( int i=len; --i>=0; ++wp ) *wp = next_value();
+ return 0;
+}
+
+void Weights::
+write(const char *fn)
+{
+ FILE *fp = fopen(fn,"w");
+ if( fp ) {
+ locate(0);
+ if( length() > 0 ) do {
+ fprintf(fp,"%f %f\n",position(),value());
+ } while( next() >= 0 );
+ fclose(fp);
+ }
+}
+
+
+
+class Video
+{
+ zmpeg3_t *src;
+ char *yp, *up, *vp;
+ int trk, trks;
+ int zpid, w, h, ww, hh, is_scaled;
+ Weights *weights;
+ double rate, vorigin;
+ int64_t len, pos;
+ uint8_t sbfr[SFRM_SZ];
+ char name[64];
+ Margin *margin;
+
+ void init();
+public:
+ uint8_t *get_y() { return (uint8_t*)yp; }
+ uint8_t *get_u() { return (uint8_t*)up; }
+ uint8_t *get_v() { return (uint8_t*)vp; }
+ int tracks() { return trks; }
+ int track() { return trk; }
+ int width() { return w; }
+ int height() { return h; }
+ int coded_width() { return ww; }
+ int coded_height() { return hh; }
+ int pid() { return zpid; }
+ bool eof() { return src->end_of_video(trk); }
+ double time() { return src->get_video_time(trk); }
+ void set_title(char *cp) { strcpy(name,cp); }
+ char *title() { return name; }
+ double framerate() { return rate; }
+ int64_t frame_count(double position) { return position*rate + 1./1001; }
+ double frame_position(int64_t count) { return count / rate; }
+ void set_origin(double t) { vorigin = t; }
+ double origin() { return vorigin; }
+ int64_t length() { return len; }
+ int64_t frame_no() { return pos; }
+ void disable_weights() { delete weights; weights = 0; }
+ void enable_weights() { weights = new Weights(); }
+ void write_weights(const char *fn) { weights->write(fn); }
+ void margin_frames(Margin *mp=0) { margin = mp; }
+ int forward(double start, double end, double &time) {
+ return weights->video_forward(start, end, time);
+ }
+ int backward(double start, double end, double &time) {
+ return weights->video_backward(start, end, time);
+ }
+ double err(double pos, double len, double irate,
+ double *iweights, int iframes) {
+ return weights->err(pos, len, irate, iweights, iframes);
+ }
+ double frame_weight(double pos) {
+ return weights->get_weight(pos);
+ }
+ double average_weight(double pos, double len) {
+ return weights->average(pos, len*rate);
+ }
+ int save_weights(double pos, double *wp, int len) {
+ return weights->save(pos, wp, len);
+ }
+ void init(zmpeg3_t *zsrc, int ztrk);
+ int load_frame();
+ int read_frame();
+ uint8_t *scaled();
+ double raw_weight();
+ double weight(uint8_t *bp);
+
+ Video() { weights = 0; }
+ ~Video() { delete weights; }
+} video;
+
+void Video::
+init(zmpeg3_t *zsrc, int ztrk)
+{
+ src = zsrc; trk = ztrk;
+ trks = src->total_vstreams();
+ zpid = src->video_pid(trk);
+ rate = src->frame_rate(trk);
+ w = src->video_width(trk);
+ h = src->video_height(trk);
+ ww = src->coded_width(trk);
+ hh = src->coded_height(trk);
+ name[0] = 0;
+ margin = 0;
+ is_scaled = 0;
+ vorigin = -1;
+ len = src->video_frames(trk);
+ pos = 0;
+}
+
+int Video::load_frame()
+{
+ ++pos; is_scaled = 0;
+ return src->read_yuvframe_ptr(&yp, &up, &vp,trk);
+}
+
+
+
+class MarginFrame
+{
+ uint8_t sbfr[SFRM_SZ];
+public:
+ uint8_t *frame() { return sbfr; }
+ MarginFrame(uint8_t *bp) { memcpy(sbfr,bp,sizeof(sbfr)); }
+};
+
+class Margin : public ArrayList<MarginFrame*>
+{
+ int cur;
+ int64_t start_frame;
+ double start_time;
+public:
+ int locate(double t);
+ void copy(Margin *that);
+ double position() { return start_time + video.frame_position(cur); }
+ int check(Clips *clips, double start, double end, int group_mask);
+ int length() { return size() - cur; }
+ uint8_t *get_frame() { return get(cur++)->frame(); }
+ void add(uint8_t *sbfr) { append(new MarginFrame(sbfr)); }
+
+ Margin(int64_t frame, double time) : cur(0) {
+ start_frame = frame; start_time = time;
+ }
+ ~Margin() { remove_all_objects(); }
+} *prefix = 0, *suffix = 0;
+
+
+int Margin::
+locate(double t)
+{
+ int pos = video.frame_count(t-start_time);
+ if( pos < 0 || pos >= size() ) return -1;
+ return cur = pos;
+}
+
+void Margin::
+copy(Margin *that)
+{
+ this->start_frame = that->start_frame + cur;
+ this->start_time = that->position();
+ while( that->length() > 0 ) add(that->get_frame());
+}
+
+int Margin::
+check(Clips *clips, double start, double end, int group_mask)
+{
+ if( locate(start) < 0 ) fail();
+ double pos;
+ while( length() > 0 && (pos=position()) < end ) {
+ uint8_t *sbfr = get_frame(); int fid;
+// write_pbm(sbfr,SWIDTH,SHEIGHT,"/tmp/dat/f%07.3f.pbm",pos-video.origin());
+ db->get_frame_key(sbfr, fid, clips, pos, group_mask);
+ }
+ return 0;
+}
+
+
+int Video::read_frame()
+{
+ if( load_frame() ) fail();
+// write_pbm(get_y(),width(),height(),"/tmp/dat/f%05ld.pbm",pos);
+ if( margin ) margin->add(scaled());
+ if( weights ) weights->add(time(), weight(scaled()));
+ return 0;
+}
+
+uint8_t *Video::scaled()
+{
+ if( !is_scaled ) {
+ is_scaled = 1;
+ uint8_t *yp = get_y(); int sh = hh;
+// while( sh>h && *yp<video_cutoff ) { yp += ww; --sh; }
+//static int fno = 0;
+//write_pbm(yp,ww,hh,"/tmp/data/f%04d.pbm",fno);
+ Scale(yp,0,ww,sh, 0,0,w,h).
+ scale(sbfr,SWIDTH,SHEIGHT, 0,0,SWIDTH,SHEIGHT);
+//write_pbm(sbfr,SWIDTH,SHEIGHT,"/tmp/data/s%04d.pbm",fno);
+//++fno;
+ }
+ return sbfr;
+}
+
+double Video::raw_weight()
+{
+ uint8_t *yp = get_y();
+ int64_t wt = 0;
+ for( int y=h; --y>=0; yp+=ww ) {
+ uint8_t *bp = yp; int n = 0;
+ for( int x=w; --x>=0; ++bp ) n += *bp;
+ wt += n;
+ }
+ return (double)wt / (w*h);
+}
+
+double Video::weight(uint8_t *bp)
+{
+ int64_t wt = 0;
+ for( int i=SFRM_SZ; --i>=0; ++bp ) wt += *bp;
+ return (double)wt / SFRM_SZ;
+}
+
+int Weights::
+minimum_forward(double start, double end, double &time)
+{
+ locate(start);
+ double t = position();
+ double min = value();
+ while( next() >= 0 && position() < end ) {
+ if( value() > min ) continue;
+ min = value(); t = position();
+ }
+ time = t;
+ return 0;
+}
+
+int Weights::
+minimum_backward(double start, double end, double &time)
+{
+ locate(end);
+ double t = position();
+ double min = value();
+ while( prev() >= 0 && position() >= start ) {
+ if( value() > min ) continue;
+ min = value(); t = position();
+ }
+ time = t;
+ return 0;
+}
+
+// find trailing edge scanning backward
+// must have video < min_video or delta video > min_dvideo
+int Weights::
+video_backward(double start, double end, double &time)
+{
+ locate(end);
+ double t = position(), v = value();
+ for(;;) {
+ if( t < start ) return 1;
+ double vv = v; v = value();
+ if( v <= min_video ) break;
+ if( fabs(vv-v) >= min_dvideo ) break;
+ if( prev() < 0 ) fail();
+ t = position();
+ }
+ while( prev() >= 0 ) {
+ if( position() < start ) break;
+ t = position();
+ if( value() > min_video ) break;
+ }
+ time = t;
+ return 0;
+}
+
+// find leading edge scanning backward
+// must have audio < min_audio
+int Weights::
+audio_backward(double start, double end, double &time)
+{
+ locate(end);
+ double t = position();
+ for(;;) {
+ if( t < start ) fail();
+ if( value() <= min_audio ) break;
+ if( prev() < 0 ) fail();
+ t = position();
+ }
+ time = t;
+ return 0;
+}
+
+// find trailing edge scanning forward
+// must have video < min_video or delta video > min_dvideo
+int Weights::
+video_forward(double start, double end, double &time)
+{
+ locate(start);
+ double t = position(), v = value();
+ for(;;) {
+ if( t >= end ) return 1;
+ double vv = v; v = value();
+ if( v <= min_video ) break;
+ if( fabs(vv-v) >= min_dvideo ) break;
+ if( next() < 0 ) fail();
+ t = position();
+ }
+ while( next() >= 0 ) {
+ if( position() >= end ) break;
+ t = position();
+ if( value() > min_video ) break;
+ }
+ time = t;
+ return 0;
+}
+
+// find leading edge scanning forward
+// must have audio < min_audio
+int Weights::
+audio_forward(double start, double end, double &time)
+{
+ locate(start);
+ double t = position();
+ for(;;) {
+ if( t >= end ) fail();
+ if( value() <= min_audio ) break;
+ if( next() < 0 ) fail();
+ t = position();
+ }
+ time = t;
+ return 0;
+}
+
+
+
+class Audio {
+ zmpeg3_t *src;
+ int trk, trks;
+ int chans, rate;
+ int64_t len, pos;
+ Weights *weights;
+ int bfr_sz;
+ short *bfr;
+
+public:
+ int tracks() { return trks; }
+ int track() { return trk; }
+ int channels() { return chans; }
+ int samplerate() { return rate; }
+ int64_t length() { return len; }
+ int64_t sample_no() { return pos; }
+ bool eof() { return src->end_of_audio(trk); }
+ double time() { return src->get_audio_time(trk); }
+ void set_buffer(int n) {
+ delete [] bfr;
+ bfr = new short[bfr_sz = clip(n,256,32767)];
+ }
+ void disable_weights() { delete weights; weights = 0; }
+ void enable_weights() { weights = new Weights(); }
+ void write_weights(const char *fn) { weights->write(fn); }
+ int forward(double start, double end, double &time) {
+ //if( !weights->audio_forward(start, end, time) ) return 0;
+ return weights->minimum_forward(start, end, time);
+ }
+ int backward(double start, double end, double &time) {
+ //if( !weights->audio_backward(start, end, time) ) return 0;
+ return weights->minimum_backward(start, end, time);
+ }
+
+ void init(zmpeg3_t *zsrc, int ztrk);
+ int load_samples(int ch);
+ int read_samples();
+ double weight();
+
+ Audio() { weights = 0; bfr = 0; }
+ ~Audio() { delete weights; delete [] bfr; }
+} audio;
+
+void Audio::init(zmpeg3_t *zsrc, int ztrk)
+{
+ src = zsrc; trk = ztrk;
+ trks = src->total_astreams();
+ chans = src->audio_channels(trk);
+ rate = src->sample_rate(trk);
+ len = src->audio_samples(trk);
+ bfr = 0; bfr_sz = 0;
+ pos = 0;
+}
+
+int Audio::load_samples(int ch)
+{
+ if( ch ) return src->reread_audio(bfr, ch, bfr_sz, trk);
+ if( src->read_audio(bfr, ch, bfr_sz, trk) ) fail();
+ pos += bfr_sz;
+ return 0;
+}
+
+int Audio::read_samples()
+{
+ if( !weights ) return load_samples(0);
+ double wt = 0;
+ for( int ch=0; ch<chans; wt+=weight(), ++ch )
+ if( load_samples(ch) ) fail();
+ weights->add(time(), wt/chans);
+ return 0;
+}
+
+double Audio::weight()
+{
+ int64_t wt = 0; short *bp = bfr;
+ int v = *bp++;
+ for( int i=bfr_sz; --i>0; v=*bp++ ) wt += abs(v-*bp);
+ return (double)wt / (bfr_sz-1);
+}
+
+class Scan
+{
+ int clip_id;
+ int64_t creation_time, system_time;
+ int prefix_frames, suffix_frames, frames;
+ double prefix_length, suffix_length;
+ double reaction_time, margin;
+ double clip_start, clip_end, *clip_weights;
+ double start_time, end_time;
+ const char *asset_path;
+ static void set_priority(int pr, int io) {
+ setpriority(PRIO_PROCESS, 0, pr); // lowest cpu priority
+ ioprio_set(IO_WHO_PROCESS, 0, IO_CLASS(io));
+ }
+ class low_priority { public:
+ low_priority() { set_priority(19, IOPRIO_CLASS_IDLE); }
+ ~low_priority() { set_priority(0, IOPRIO_CLASS_BE); }
+ };
+ class high_priority { public:
+ high_priority() { set_priority(-4, IOPRIO_CLASS_BE); }
+ ~high_priority() { set_priority(0, IOPRIO_CLASS_BE); }
+ };
+ int write_clip();
+public:
+ int scan(Src &src, Deletions *dels);
+ int cut_clip(Src &src, Dele *del, Dele *next);
+ int add_clip();
+ int verify_clip(double position, double length);
+ int save_group(Margin *margin, double pos, int frame_no, int len, int group);
+
+ Scan();
+ ~Scan();
+};
+
+Scan::
+Scan()
+{
+ prefix_length = suffix_length = 2; // length of prefix/suffix in seconds
+ prefix_frames = video.frame_count(prefix_length);
+ suffix_frames = video.frame_count(suffix_length);
+ reaction_time = 1.0; // 1 sec reaction time for default start/end time
+ margin = 1.0; // 1 sec search window -1.0..+1.0 search margin
+ creation_time = system_time = 0;
+ clip_start = clip_end = 0;
+ clip_id = 0; clip_weights = 0;
+ db = new MediaDb();
+ db->openDb();
+ db->detachDb();
+}
+
+Scan::
+~Scan()
+{
+ db->closeDb();
+ db = 0;
+}
+
+int Scan::
+verify_clip(double position, double length)
+{
+ Clips clips;
+ double start = position, end = position + length;
+ if( prefix->check(&clips, start, start+prefix_length, 1) ) fail();
+ if( !clips.count ) return 0;
+ if( suffix->check(&clips, end-suffix_length, end, 2) ) fail();
+ double avg_wt = video.average_weight(position, length);
+ for( Clip *clip=clips.first; clip; clip=clip->next ) {
+ int clip_id = clip->clip_id;
+ if( db->clip_id(clip_id) ) continue;
+ double bias = avg_wt - db->clip_average_weight();
+ if( fabs(bias) > 2*MEDIA_MEAN_ERRLMT ) continue;
+ double iframerate = db->clip_framerate();
+ if( iframerate <= 0. ) continue;
+ int mframes = 2*check_margin * iframerate;
+ int iframes = db->clip_frames();
+ if( iframes < mframes ) continue;
+ double ilength = iframes / iframerate;
+ if( fabs(ilength-length) > 2*check_margin ) continue;
+ double *iweights = db->clip_weights();
+ double pos = position-check_margin;
+ double kerr = MEDIA_WEIGHT_ERRLMT, kpos = -1;
+ for( double dt=1/iframerate; --mframes>=0; pos+=dt ) {
+ double err = video.err(pos, length, iframerate,
+ iweights, iframes);
+//printf(" clip %d, pos %f, err %f\n",clip_id,pos,err);
+ if( err < kerr ) {
+ if( kpos >= 0 && err > kerr ) break;
+ kerr = err; kpos = pos;
+ }
+ }
+//printf("vs clip %d, err %f, pos %f\n",clip_id,kerr,kpos);
+ if( kpos >= 0 ) {
+ printf(" dupl=%d, err=%f", clip_id, kerr);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+int Scan::
+save_group(Margin *margin, double pos, int frame_no, int len, int group)
+{
+ if( margin->locate(pos) < 0 ) fail();
+ if( margin->length() < len ) fail();
+ while( --len >= 0 ) {
+ uint8_t *sbfr = margin->get_frame();
+ double offset = video.frame_position(frame_no++);
+ double wt = video.frame_weight(margin->position());
+ if( wt < lo_video || wt > hi_video ) continue;
+ db->new_frame(clip_id, sbfr, frame_no, group, offset);
+//write_pbm(sbfr,SWIDTH,SHEIGHT,"/tmp/dat/c%03df%05d.pbm",clip_id,frame_no);
+ }
+ return 0;
+}
+
+
+
+int read_to(double time)
+{
+ int ret = 0;
+ while( !(ret=video.eof()) && video.time() < time ) video.read_frame();
+ while( !(ret=audio.eof()) && audio.time() < time ) audio.read_samples();
+ return ret;
+}
+
+
+int Scan::
+scan(Src &src, Deletions *dels)
+{
+ Dele *next = dels->first;
+ if( !next || !next->next ) return 0;
+ if( next->action != DEL_START ) fail();
+ next->action = DEL_MARK;
+ if( next->next->action == DEL_OOPS )
+ next->next->action = DEL_SKIP;
+
+ time_t ct; time(&ct);
+ creation_time = (int64_t)ct;
+ prefix = suffix = 0;
+ Dele *del = 0;
+
+ while( next ) {
+ switch( next->action ) {
+ case DEL_MARK:
+ if( !cut_clip(src, del, next) ) add_clip();
+ del = next;
+ break;
+ case DEL_SKIP:
+ del = 0;
+ break;
+ default:
+ fail();
+ }
+ do {
+ Dele *nxt = next->next;
+ while( nxt && nxt->next && nxt->next->action == DEL_OOPS ) {
+ while( (nxt=nxt->next) && nxt->action == DEL_OOPS );
+ }
+ next = nxt;
+ } while( next && del && (next->time-del->time) < 3 );
+ delete prefix; prefix = suffix; suffix = 0;
+ }
+
+ delete prefix; prefix = 0;
+ return 0;
+}
+
+
+int Scan::
+cut_clip(Src &src, Dele *del, Dele *next)
+{
+ low_priority set_lo;
+ double next_suffix_length = !del ? 0 : suffix_length;
+ double next_prefix_length = !next->next ? 0 : prefix_length;
+ double suffix_start_time =
+ next->time - prefix_length - next_suffix_length - margin;
+ if( read_to(suffix_start_time) ) fail();
+ // create new suffix, copy prefix if overlap
+ suffix = new Margin(video.frame_no(), video.time());
+ if( prefix && prefix->locate(suffix_start_time) >= 0 )
+ suffix->copy(prefix);
+ // read_to next mark, get system time
+ video.margin_frames(suffix);
+ if( read_to(next->time) ) fail();
+ system_time = src->dvb.get_system_time();
+ // read_to end of next prefix
+ double prefix_end_time = next->time + next_prefix_length + margin;
+ if( read_to(prefix_end_time) ) fail();
+ video.margin_frames();
+ // if no previous mark, return
+ if( !del ) return -1;
+ asset_path = src.asset_path();
+ double cut_start = del->time, cut_end = next->time;
+ if( cut_end-cut_start < min_clip_time ) return 1;
+ // default start/end clip endpoints
+ start_time = cut_start - reaction_time;
+ end_time = cut_end - reaction_time;
+ // find edges, if possible. default to reaction time
+ audio.backward(cut_start-prefix_length, cut_start, start_time);
+ video.forward(start_time-margin,start_time+margin, start_time);
+ audio.forward(cut_end-suffix_length, cut_end, end_time);
+ video.backward(end_time-margin,end_time+margin, end_time);
+ // validate length
+ frames = video.frame_count(end_time - start_time);
+ if( frames < prefix_frames + suffix_frames ) fail();
+ // report ranges
+ clip_start = start_time - video.origin();
+ clip_end = end_time - video.origin();
+ printf(" %f-%f (%f), %f-%f %ld-%ld",
+ start_time, end_time, end_time-start_time, clip_start, clip_end,
+ video.frame_count(clip_start), video.frame_count(clip_end));
+ return 0;
+}
+
+int Scan::
+add_clip()
+{
+ high_priority set_hi;
+ if( !db || !db->is_open() ) {
+ fprintf(stderr,"unable to open db: " MEDIA_DB "\n");
+ fail();
+ }
+ db->attachDb(1);
+ // check for duplicate
+ if( verify_clip(start_time, end_time-start_time) ) {
+ }
+ else if( !write_clip() ) {
+ printf(" new %d",clip_id);
+ db->commitDb();
+ }
+ else {
+ printf(" failed");
+ db->undoDb();
+ }
+ db->detachDb();
+ printf("\n"); fflush(stdout);
+ return 0;
+}
+
+int Scan::
+write_clip()
+{
+ if( db->new_clip_set(video.title(), asset_path, clip_start,
+ video.framerate(), frames, prefix_frames, suffix_frames,
+ creation_time, system_time) ) fail();
+ // save prefix video group
+ int frame_no = 0;
+ clip_id = db->clip_id();
+ if( save_group(prefix, start_time, frame_no, prefix_frames, 1) ) fail();
+ // save suffix video group
+ double start_suffix = end_time - suffix_length;
+ frame_no = frames - suffix_frames;
+ if( save_group(suffix, start_suffix, frame_no, suffix_frames, 2) ) fail();
+ // save video weights
+ if( video.save_weights(start_time, db->clip_weights(), frames) ) fail();
+ double avg_wt = video.average_weight(start_time, end_time-start_time);
+ db->clip_average_weight(avg_wt);
+ return 0;
+}
+
+void sig_segv(int n)
+{
+ printf("\nsegv, pid=%d\n",getpid()); fflush(stdout);
+ sleep(1000000);
+}
+
+void sig_hup(int n)
+{
+}
+
+int main(int ac, char **av)
+{
+printf("started %d\n",getpid());
+ signal(SIGSEGV,sig_segv);
+ signal(SIGHUP,sig_hup);
+
+ if( ac < 2 ) {
+ fprintf(stderr, "usage: %s <xml.del>\n", av[1]);
+ fail();
+ }
+ // read in deletions
+ Deletions *deletions = Deletions::read_dels(av[1]);
+ if( !deletions ) {
+ fprintf(stderr, "read_dels: %s failed\n", av[1]);
+ fail();
+ }
+
+ // open mpeg3 dvb media
+ Src src(deletions->file_path());
+ if( !src.open() ) {
+ fprintf(stderr, "open: %s failed\n", deletions->file_path());
+ fail();
+ }
+ src->set_cpus(4);
+ src->set_pts_padding(-1);
+
+ // find video stream
+ int vtrk = src->total_vstreams();
+ while( --vtrk >= 0 && src->video_pid(vtrk) != deletions->pid );
+ if( vtrk < 0 ) {
+ fprintf(stderr, "pid %d failed\n", deletions->pid);
+ fail();
+ }
+ video.init(src, vtrk);
+ if( video.framerate() <= 0 ) {
+ fprintf(stderr, "framerate %d failed\n", vtrk);
+ fail();
+ }
+
+ // find first audio stream associate to video stream
+ int n, atrk = -1;
+ int elements = src->dvb.channel_count();
+ for( n=0; atrk<0 && n<elements; ++n ) {
+ int atracks, vtracks;
+ if( src->dvb.total_vstreams(n,vtracks) ) continue;
+ for( int i=0; atrk<0 && i<vtracks; ++i ) {
+ if( src->dvb.vstream_number(n,i,vtrk) ) continue;
+ if( vtrk != video.track() ) continue;
+ if( src->dvb.total_astreams(n,atracks) ) continue;
+ if( !atracks ) continue;
+ if( src->dvb.astream_number(n,0,atrk,0) ) continue;
+ }
+ }
+ int major, minor; char title[64];
+ if( !src->dvb.get_channel(n, major, minor) ) {
+ sprintf(title, "%3d.%-3d", major, minor);
+ video.set_title(title);
+ }
+
+ if( atrk < 0 ) {
+ fprintf(stderr, "audio %d failed\n", video.track());
+ fail();
+ }
+ audio.init(src, atrk);
+ audio.set_buffer(audio.samplerate()/video.framerate()+64);
+
+ // read to the first valid frame
+ if( read_to(0) ) fail();
+ double last_time = video.time(), origin = -1;
+ while( !video.eof() ) {
+ if( video.frame_position(video.frame_no()) >= 5 ) break;
+ if( video.raw_weight() >= video_cutoff ) { origin = last_time; break; }
+ last_time = video.time();
+ if( video.read_frame() ) break;
+ }
+ if( origin < 0 ) {
+ fprintf(stderr, "origin %d failed\n", video.track());
+ fail();
+ }
+ video.set_origin(origin);
+
+ double audio_time = audio.time(), video_time = video.time();
+ double start_time = audio_time > video_time ? audio_time : video_time;
+ if( read_to(start_time) ) fail();
+
+ audio.enable_weights();
+ video.enable_weights();
+
+ Scan s;
+ s.scan(src, deletions);
+
+//audio.write_weights("/tmp/audio.wts");
+//video.write_weights("/tmp/video.wts");
+ audio.disable_weights();
+ video.disable_weights();
+
+// ::remove(deletions->path());
+// ::remove(av[1]);
+
+ delete deletions;
+printf("completed %d\n",getpid());
+//sleep(1000000);
+ return 0;
+}
+
projects / goodguy / history.git / blobdiff