14 #include <X11/Xatom.h>
16 #include <X11/Xutil.h>
17 #include <X11/extensions/XShm.h>
20 #include "libavfilter/buffersrc.h"
21 #include "libavfilter/buffersink.h"
22 #include "libavformat/avformat.h"
23 #include "libavformat/avio.h"
24 #include "libavcodec/avcodec.h"
25 #include "libavfilter/avfilter.h"
26 #include "libavutil/avutil.h"
27 #include "libavutil/imgutils.h"
28 #include "libavutil/opt.h"
29 #include "libavutil/pixdesc.h"
30 #include "libswresample/swresample.h"
31 #include "libswscale/swscale.h"
35 int64_t tm = 0, tn = 0;
45 gg_window(Display *display, int x, int y, int w, int h);
55 gg_window::gg_window(Display *display, int x, int y, int w, int h)
57 this->display = display;
58 this->x = x; this->y = y;
59 this->w = w; this->h = h;
61 Window root = DefaultRootWindow(display);
62 Screen *screen = DefaultScreenOfDisplay(display);
63 Visual *visual = DefaultVisualOfScreen(screen);
64 int depth = DefaultDepthOfScreen(screen);
66 unsigned long gcmask = GCGraphicsExposures;
68 gcvalues.graphics_exposures = 0;
69 gc = XCreateGC(display, root, gcmask, &gcvalues);
71 XSetWindowAttributes attributes;
72 attributes.background_pixel = BlackPixel(display, DefaultScreen(display));
73 attributes.border_pixel = WhitePixel(display, DefaultScreen(display));
74 attributes.event_mask =
75 EnterWindowMask | LeaveWindowMask |
76 ButtonPressMask | ButtonReleaseMask |
77 PointerMotionMask | FocusChangeMask;
78 int valueMask = CWBackPixel | CWBorderPixel | CWEventMask;
79 this->win = XCreateWindow(display, root, x, y, w, h, border, depth,
80 InputOutput, visual, valueMask, &attributes);
83 gg_window::~gg_window()
86 XDestroyWindow(display, win);
89 void gg_window::show()
91 XMapWindow(display,win);
94 void gg_window::hide()
96 XUnmapWindow(display,win);
104 XShmSegmentInfo shm_info;
110 gg_ximage(Display *display, int w, int h, int shm);
113 void put_image(gg_window &gw);
116 gg_ximage::gg_ximage(Display *display, int w, int h, int shm)
118 this->display = display;
119 this->w = w; this->h = h;
122 ximage = 0; sz = 0; data = 0;
123 Screen *screen = DefaultScreenOfDisplay(display);
124 Visual *visual = DefaultVisualOfScreen(screen);
125 int depth = DefaultDepthOfScreen(screen);
128 ximage = XShmCreateImage(display, visual, depth, ZPixmap, (char*)NULL, &shm_info, w, h);
129 // Create shared memory
130 sz = h * ximage->bytes_per_line;
131 shm_info.shmid = shmget(IPC_PRIVATE, sz + 8, IPC_CREAT | 0777);
132 if(shm_info.shmid < 0) perror("shmget");
133 data = (unsigned char *)shmat(shm_info.shmid, NULL, 0);
134 // This causes it to automatically delete when the program exits.
135 shmctl(shm_info.shmid, IPC_RMID, 0);
136 ximage->data = shm_info.shmaddr = (char*)data;
137 shm_info.readOnly = 0;
138 // Get the real parameters
139 if(!XShmAttach(display, &shm_info)) perror("XShmAttach");
142 ximage = XCreateImage(display, visual, depth, ZPixmap, 0, (char*)data, w, h, 8, 0);
143 sz = h * ximage->bytes_per_line;
144 data = new unsigned char[sz+8];
147 ximage->data = (char*) data;
148 lsb[0] = ximage->red_mask & ~(ximage->red_mask<<1);
149 lsb[1] = ximage->green_mask & ~(ximage->green_mask<<1);
150 lsb[2] = ximage->blue_mask & ~(ximage->blue_mask<<1);
153 gg_ximage::~gg_ximage()
158 XDestroyImage(ximage);
159 XShmDetach(display, &shm_info);
161 shmdt(shm_info.shmaddr);
167 XDestroyImage(ximage);
171 void gg_ximage::put_image(gg_window &gw)
173 Display *display = gw.display;
177 XShmPutImage(display, win, gc, ximage, 0,0, 0,0,w,h, 0);
179 XPutImage(display, win, gc, ximage, 0,0, 0,0,w,h);
188 gg_ximage *imgs[2], *img;
190 gg_thread(gg_window &gw, int shm) ;
193 static void *entry(void *t);
197 void post(gg_ximage *ip);
198 gg_ximage *next_img();
200 pthread_mutex_t draw;
201 void draw_lock() { pthread_mutex_lock(&draw); }
202 void draw_unlock() { pthread_mutex_unlock(&draw); }
205 gg_thread::gg_thread(gg_window &gw, int shm)
208 imgs[0] = new gg_ximage(gw.display, gw.w, gw.h, shm);
209 imgs[1] = new gg_ximage(gw.display, gw.w, gw.h, shm);
212 pthread_mutex_init(&draw, 0);
215 gg_thread::~gg_thread()
219 pthread_mutex_destroy(&draw);
222 void *gg_thread::entry(void *t)
224 return ((gg_thread*)t)->run();
227 void gg_thread::start()
230 pthread_attr_init(&attr);
231 pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED);
233 pthread_create(&tid, &attr, &entry, this);
234 pthread_attr_destroy(&attr);
236 void gg_thread::join()
239 pthread_join(tid, 0);
242 void *gg_thread::run()
245 if( XPending(gw.display) ) {
247 XNextEvent(gw.display, &xev);
258 if( !img ) { usleep(10000); continue; }
266 gg_ximage *gg_thread::next_img()
268 gg_ximage *ip = imgs[active];
273 void gg_thread::post(gg_ximage *ip)
284 AVFormatContext *fmt_ctx;
288 AVPixelFormat pix_fmt;
291 int need_packet, eof;
292 int open_decoder(const char *filename, int vid_no);
293 void close_decoder();
294 AVFrame *read_frame();
299 av_init_packet(&this->ipkt);
304 this->frame_rate = 0;
305 this->need_packet = 0;
307 this->pix_fmt = AV_PIX_FMT_NONE;
311 void ffcmpr::close_decoder()
313 av_packet_unref(&ipkt);
314 if( !fmt_ctx ) return;
315 if( ctx ) avcodec_free_context(&ctx);
316 avformat_close_input(&fmt_ctx);
317 av_frame_free(&ipic);
325 int ffcmpr::open_decoder(const char *filename, int vid_no)
328 if( stat(filename, &fst) ) return 1;
330 av_log_set_level(AV_LOG_VERBOSE);
332 AVDictionary *fopts = 0;
334 av_dict_set(&fopts, "formatprobesize", "5000000", 0);
335 av_dict_set(&fopts, "scan_all_pmts", "1", 0);
336 av_dict_set(&fopts, "threads", "auto", 0);
337 int ret = avformat_open_input(&fmt_ctx, filename, NULL, &fopts);
338 av_dict_free(&fopts);
340 fprintf(stderr,"file open failed: %s\n", filename);
343 ret = avformat_find_stream_info(fmt_ctx, NULL);
345 fprintf(stderr,"file probe failed: %s\n", filename);
350 for( int i=0; !this->st && ret>=0 && i<(int)fmt_ctx->nb_streams; ++i ) {
351 AVStream *fst = fmt_ctx->streams[i];
352 AVMediaType type = fst->codecpar->codec_type;
353 if( type != AVMEDIA_TYPE_VIDEO ) continue;
354 if( --vid_no < 0 ) this->st = fst;
357 AVCodecID codec_id = st->codecpar->codec_id;
358 AVDictionary *copts = 0;
359 //av_dict_copy(&copts, opts, 0);
360 AVCodec *decoder = avcodec_find_decoder(codec_id);
361 ctx = avcodec_alloc_context3(decoder);
362 avcodec_parameters_to_context(ctx, st->codecpar);
363 if( avcodec_open2(ctx, decoder, &copts) < 0 ) {
364 fprintf(stderr,"codec open failed: %s\n", filename);
367 av_dict_free(&copts);
368 ipic = av_frame_alloc();
372 AVRational framerate = av_guess_frame_rate(fmt_ctx, st, 0);
373 this->frame_rate = !framerate.den ? 0 : (double)framerate.num / framerate.den;
374 this->pix_fmt = (AVPixelFormat)st->codecpar->format;
375 this->width = st->codecpar->width;
376 this->height = st->codecpar->height;
380 AVFrame *ffcmpr::read_frame()
382 av_frame_unref(ipic);
384 for( int retrys=1000; --retrys>=0; ) {
387 AVPacket *pkt = &ipkt;
388 av_packet_unref(pkt);
389 int ret = av_read_frame(fmt_ctx, pkt);
391 if( ret != AVERROR_EOF ) return 0;
392 ret = 0; eof = 1; pkt = 0;
395 if( pkt->stream_index != st->index ) continue;
396 if( !pkt->data || !pkt->size ) continue;
398 avcodec_send_packet(ctx, pkt);
401 int ret = avcodec_receive_frame(ctx, ipic);
402 if( ret >= 0 ) return ipic;
403 if( ret != AVERROR(EAGAIN) ) {
404 eof = 1; need_packet = 0;
412 static int diff_frame(AVFrame *afrm, AVFrame *bfrm, gg_ximage *ximg, int w, int h)
415 uint8_t *arow = afrm->data[0];
416 uint8_t *brow = bfrm->data[0];
417 uint8_t *frow = ximg->data;
418 int asz = afrm->linesize[0], bsz = afrm->linesize[0];
419 XImage *ximage = ximg->ximage;
420 int fsz = ximage->bytes_per_line;
421 int rsz = w, bpp = (ximage->bits_per_pixel+7)/8;
422 uint32_t *lsb = ximg->lsb;
424 for( int y=h; --y>=0; arow+=asz, brow+=bsz, frow+=fsz ) {
425 uint8_t *ap = arow, *bp = brow, *fp = frow;
426 for( int x=rsz; --x>=0; ) {
427 uint32_t rgb = 0; uint8_t *rp = fp;
428 for( int i=0; i<3; ++i ) {
429 int d = *ap++ - *bp++;
431 if( v > 255 ) v = 255;
432 else if( v < 0 ) v = 0;
438 if( ximage->byte_order == MSBFirst )
439 for( int i=3; --i>=0; ) *rp++ = rgb>>(8*i);
441 for( int i=0; i<3; ++i ) *rp++ = rgb>>(8*i);
446 printf("%d %d %d %f", sz, m, n, (double)n/sz);
451 int main(int ac, char **av)
456 Display *display = XOpenDisplay(getenv("DISPLAY"));
458 fprintf(stderr,"Unable to open display\n");
463 if( a.open_decoder(av[1],0) ) return 1;
464 if( b.open_decoder(av[2],0) ) return 1;
466 printf("file a:%s\n", av[1]);
467 printf(" id 0x%06x:", a.ctx->codec_id);
468 const AVCodecDescriptor *adesc = avcodec_descriptor_get(a.ctx->codec_id);
469 printf(" video %s\n", adesc ? adesc->name : " (unkn)");
470 printf(" %dx%d %5.2f", a.width, a.height, a.frame_rate);
471 const char *apix = av_get_pix_fmt_name(a.pix_fmt);
472 printf(" pix %s\n", apix ? apix : "(unkn)");
474 printf("file b:%s\n", av[2]);
475 printf(" id 0x%06x:", b.ctx->codec_id);
476 const AVCodecDescriptor *bdesc = avcodec_descriptor_get(b.ctx->codec_id);
477 printf(" video %s\n", bdesc ? bdesc->name : " (unkn)");
478 printf(" %dx%d %5.2f", b.width, b.height, b.frame_rate);
479 const char *bpix = av_get_pix_fmt_name(b.pix_fmt);
480 printf(" pix %s\n", bpix ? bpix : "(unkn)");
482 // if( a.ctx->codec_id != b.ctx->codec_id ) { printf("codec mismatch\n"); return 1;}
483 if( a.width != b.width ) { printf("width mismatch\n"); return 1;}
484 if( a.height != b.height ) { printf("height mismatch\n"); return 1;}
485 // if( a.frame_rate != b.frame_rate ) { printf("framerate mismatch\n"); return 1;}
486 // if( a.pix_fmt != b.pix_fmt ) { printf("format mismatch\n"); return 1;}
488 signal(SIGINT,sigint);
490 struct SwsContext *a_cvt = sws_getCachedContext(0, a.width, a.height, a.pix_fmt,
491 a.width, a.height, AV_PIX_FMT_RGB24, SWS_POINT, 0, 0, 0);
492 struct SwsContext *b_cvt = sws_getCachedContext(0, b.width, b.height, b.pix_fmt,
493 b.width, b.height, AV_PIX_FMT_RGB24, SWS_POINT, 0, 0, 0);
494 if( !a_cvt || !b_cvt ) {
495 printf("sws_getCachedContext() failed\n");
499 AVFrame *afrm = av_frame_alloc();
500 av_image_alloc(afrm->data, afrm->linesize,
501 a.width, a.height, AV_PIX_FMT_RGB24, 1);
503 AVFrame *bfrm = av_frame_alloc();
504 av_image_alloc(bfrm->data, bfrm->linesize,
505 b.width, b.height, AV_PIX_FMT_RGB24, 1);
506 { gg_window gw(display, 10,10, a.width,a.height);
508 gg_thread thr(gw, 1);
514 if( ac>3 && (ret=atoi(av[3])) ) {
515 while( ret > 0 ) { a.read_frame(); --ret; }
516 while( ret < 0 ) { b.read_frame(); ++ret; }
520 AVFrame *ap = a.read_frame();
522 AVFrame *bp = b.read_frame();
524 sws_scale(a_cvt, ap->data, ap->linesize, 0, ap->height,
525 afrm->data, afrm->linesize);
526 sws_scale(b_cvt, bp->data, bp->linesize, 0, bp->height,
527 bfrm->data, bfrm->linesize);
529 gg_ximage *fimg = thr.next_img();
530 ret = diff_frame(afrm, bfrm, fimg, ap->width, ap->height);
532 err += ret; ++frm_no;
533 printf(" %d\n",frm_no);
536 av_freep(&afrm->data);
537 av_frame_free(&afrm);
538 av_freep(&bfrm->data);
539 av_frame_free(&bfrm);
546 XCloseDisplay(display);
547 printf("\n%jd %jd\n", tm, tn);