static zbar_image_t *_php_zbarcode_get_page(MagickWand *wand) { unsigned long width, height; unsigned char *image_data; size_t image_size; if (MagickSetImageDepth(wand, 8) == MagickFalse) { return NULL; } if (MagickSetImageFormat(wand, "GRAY") == MagickFalse) { return NULL; } width = MagickGetImageWidth(wand); height = MagickGetImageHeight(wand); image_data = malloc(width * height); if (!MagickExportImagePixels(wand, 0, 0, width, height, "I", CharPixel, image_data)) { return NULL; } return _php_zbarcode_image_create(width, height, image_data); }
/** * read frame using ImageMagick */ NftResult im_read_frame(struct Ledcat *c, size_t width, size_t height, char *buf) { #if HAVE_IMAGEMAGICK == 1 /* is there an image from a previous read? */ if(MagickHasNextImage(c->mw)) { MagickNextImage(c->mw); } else { /* end-of-stream? */ if(feof(c->file)) return FALSE; /* read file */ if(!MagickReadImageFile(c->mw, c->file)) { im_error(c->mw); return FALSE; } /* reset iterator in case we read more than one file */ //MagickResetIterator(c->mw); } /* turn possible alpha-channel black */ /*PixelWand *pw; if(!(pw = NewPixelWand())) return FALSE; PixelSetColor(pw, "black"); MagickSetImageBackgroundColor(c->mw, pw); DestroyPixelWand(pw);*/ /* get raw-buffer from imagemagick */ if(!(MagickExportImagePixels(c->mw, 0, 0, width, height, c->map, c->storage, buf))) { im_error(c->mw); return FALSE; } /* free resources */ if(!MagickHasNextImage(c->mw)) ClearMagickWand(c->mw); #endif return TRUE; }
void load_image(ConvertContext *context) { int result = RESULT_OK; char *error_desc; ExceptionType error_type; // wait for resources to be available dispatch_semaphore_wait(context->conv_semaphore, DISPATCH_TIME_FOREVER); // load image if (MagickReadImage(context->mw, context->src_path) == MagickFalse) { // deal with error error_desc = MagickGetException(context->mw, &error_type); asprintf(&context->results.message,"Error loading image (%s): %s\n",error_desc,context->src_path); error_desc = (char *)MagickRelinquishMemory(error_desc); result += RESULT_ERROR; } if (result == RESULT_OK) { // get image info context->hasAlphaChannel = MagickGetImageAlphaChannel(context->mw); if (context->hasAlphaChannel == MagickTrue) { context->imageWidth = MagickGetImageWidth(context->mw); context->imageHeight = MagickGetImageHeight(context->mw); // get pixel data context->pixel_count = context->imageWidth * context->imageHeight; context->pixels = malloc(context->pixel_count * sizeof(PixelData)); if (context->pixels == NULL) { asprintf(&context->results.message, "Error allocating memory for pixel data: %s\n",context->src_path); result += RESULT_ERROR; } else { if (MagickExportImagePixels(context->mw, 0, 0, context->imageWidth, context->imageHeight, "ARGB", CharPixel, context->pixels) == MagickFalse) { error_desc = MagickGetException(context->mw, &error_type); asprintf(&context->results.message, "Error exporting pixel data (%s): %s\n",error_desc,context->src_path); error_desc = (char *)MagickRelinquishMemory(error_desc); result += RESULT_ERROR; } } } } if (result != RESULT_OK) { // clean up mess context->results.result = result; dispatch_group_async_f(context->conv_group, dispatch_get_main_queue(), context, (void (*)(void *))finish_image); } else { // move to next step dispatch_group_async_f(context->conv_group, context->conv_queue, context, (void (*)(void *))conv_image); } }
int main (int argc, char **argv) { MagickWand *img = NULL; imag_t p1, *p; p=&p1; char *res; int i; MagickWandGenesis(); img = NewMagickWand(); if (argc > 1 && MagickReadImage(img, argv[1]) == MagickFalse) { fprintf(stderr, "Failed to read image!\n"); exit(EXIT_FAILURE); } /* Perform the required transform in image */ //MagickTransformImageColorspace(img, GRAYColorspace); // To gray colors //MagickThresholdImage(img, 40000); // Threshold //MagickNegateImage(img, MagickFalse); // Negate or invert black/white /* Extract image data */ p->x = MagickGetImageWidth(img); p->y = MagickGetImageHeight(img); p->p = malloc(p->x*p->y * sizeof(unsigned char)); MagickExportImagePixels(img, 0, 0, p->x, p->y, "I", CharPixel, p->p); /* Gocr library functions *************************************************/ gocr_ini(); /* Init a gocr job */ gocr_opts("0-9","#",NULL,0,0,0); /* only digits, "#" for unrecognized char */ res = gocr_call(p); /* Call gocr */ for (i=0; i < gocr_rows(); i++) printf("%s\n", gocr_resp(i)); /* Print response */ gocr_end(); /* End a gocr job */ /**************************************************************************/ /* Write processed image */ MagickWriteImage(img, "processed.png"); DestroyMagickWand(img); MagickWandTerminus(); exit(EXIT_SUCCESS); }
int main(int argc,char **argv) { #define ThrowAPIException(wand) \ { \ description=MagickGetException(wand,&severity); \ (void) FormatLocaleFile(stderr,"%s %s %lu %s\n",GetMagickModule(), \ description); \ description=(char *) MagickRelinquishMemory(description); \ exit(-1); \ } static char CustomOption[] = "custom option", CustomProperty[] = "custom profile"; static unsigned char sRGBProfile[] = { 0x00, 0x00, 0x0c, 0x48, 0x4c, 0x69, 0x6e, 0x6f, 0x02, 0x10, 0x00, 0x00, 0x6d, 0x6e, 0x74, 0x72, 0x52, 0x47, 0x42, 0x20, 0x58, 0x59, 0x5a, 0x20, 0x07, 0xce, 0x00, 0x02, 0x00, 0x09, 0x00, 0x06, 0x00, 0x31, 0x00, 0x00, 0x61, 0x63, 0x73, 0x70, 0x4d, 0x53, 0x46, 0x54, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x43, 0x20, 0x73, 0x52, 0x47, 0x42, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf6, 0xd6, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0xd3, 0x2d, 0x48, 0x50, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 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0x58, 0xf0, 0xe5, 0xf1, 0x72, 0xf1, 0xff, 0xf2, 0x8c, 0xf3, 0x19, 0xf3, 0xa7, 0xf4, 0x34, 0xf4, 0xc2, 0xf5, 0x50, 0xf5, 0xde, 0xf6, 0x6d, 0xf6, 0xfb, 0xf7, 0x8a, 0xf8, 0x19, 0xf8, 0xa8, 0xf9, 0x38, 0xf9, 0xc7, 0xfa, 0x57, 0xfa, 0xe7, 0xfb, 0x77, 0xfc, 0x07, 0xfc, 0x98, 0xfd, 0x29, 0xfd, 0xba, 0xfe, 0x4b, 0xfe, 0xdc, 0xff, 0x6d, 0xff, 0xff }; char *description, **options, **profiles, **properties; const char *option, *property; DrawingWand *drawing_wand; ExceptionType severity; MagickWand *clone_wand, *magick_wand; PixelIterator *iterator; PixelWand *background, *border, *fill, **pixels; register ssize_t i; unsigned char *profile; unsigned int status; size_t columns, delay, length, number_options, number_profiles, number_properties, number_wands, rows; (void) argc; (void) argv; MagickWandGenesis(); magick_wand=NewMagickWand(); (void) MagickSetSize(magick_wand,640,480); (void) MagickGetSize(magick_wand,&columns,&rows); if ((columns != 640) || (rows != 480)) { (void) FormatLocaleFile(stderr,"Unexpected magick wand size\n"); exit(1); } (void) FormatLocaleFile(stdout,"Reading images...\n"); { char *p, path[MaxTextExtent]; path[0]=0; p=getenv("SRCDIR"); if (p != (char *) NULL) { (void) strcpy(path,p); if (path[strlen(path)-1] != '/') (void) strcat(path,"/"); } (void) strcat(path,"sequence.miff"); status=MagickReadImage(magick_wand,path); } if (status == MagickFalse) ThrowAPIException(magick_wand); if (MagickGetNumberImages(magick_wand) != 5) (void) FormatLocaleFile(stderr,"read %.20g images; expected 5\n", (double) MagickGetNumberImages(magick_wand)); (void) FormatLocaleFile(stdout,"Iterate forward...\n"); MagickResetIterator(magick_wand); while (MagickNextImage(magick_wand) != MagickFalse) (void) FormatLocaleFile(stdout,"index %.20g scene %.20g\n",(double) MagickGetIteratorIndex(magick_wand),(double) MagickGetImageScene(magick_wand)); (void) FormatLocaleFile(stdout,"Iterate reverse...\n"); while (MagickPreviousImage(magick_wand) != MagickFalse) (void) FormatLocaleFile(stdout,"index %.20g scene %.20g\n",(double) MagickGetIteratorIndex(magick_wand),(double) MagickGetImageScene(magick_wand)); (void) FormatLocaleFile(stdout,"Remove scene 1...\n"); (void) MagickSetIteratorIndex(magick_wand,1); clone_wand=MagickGetImage(magick_wand); status=MagickRemoveImage(magick_wand); if (status == MagickFalse) ThrowAPIException(magick_wand); MagickResetIterator(magick_wand); while (MagickNextImage(magick_wand) != MagickFalse) (void) FormatLocaleFile(stdout,"index %.20g scene %.20g\n",(double) MagickGetIteratorIndex(magick_wand),(double) MagickGetImageScene(magick_wand)); (void) FormatLocaleFile(stdout,"Insert scene 1 back in sequence...\n"); (void) MagickSetIteratorIndex(magick_wand,0); status=MagickAddImage(magick_wand,clone_wand); if (status == MagickFalse) ThrowAPIException(magick_wand); MagickResetIterator(magick_wand); while (MagickNextImage(magick_wand) != MagickFalse) (void) FormatLocaleFile(stdout,"index %.20g scene %.20g\n",(double) MagickGetIteratorIndex(magick_wand),(double) MagickGetImageScene(magick_wand)); (void) FormatLocaleFile(stdout,"Set scene 2 to scene 1...\n"); (void) MagickSetIteratorIndex(magick_wand,2); status=MagickSetImage(magick_wand,clone_wand); clone_wand=DestroyMagickWand(clone_wand); if (status == MagickFalse) ThrowAPIException(magick_wand); MagickResetIterator(magick_wand); while (MagickNextImage(magick_wand) != MagickFalse) (void) FormatLocaleFile(stdout,"index %.20g scene %.20g\n",(double) MagickGetIteratorIndex(magick_wand),(double) MagickGetImageScene(magick_wand)); (void) FormatLocaleFile(stdout,"Apply image processing options...\n"); status=MagickCropImage(magick_wand,60,60,10,10); if (status == MagickFalse) ThrowAPIException(magick_wand); MagickResetIterator(magick_wand); background=NewPixelWand(); status=PixelSetColor(background,"#000000"); if (status == MagickFalse) ThrowAPIException(magick_wand); status=MagickRotateImage(magick_wand,background,90.0); if (status == MagickFalse) ThrowAPIException(magick_wand); border=NewPixelWand(); (void) PixelSetColor(background,"green"); (void) PixelSetColor(border,"black"); status=MagickFloodfillPaintImage(magick_wand,CompositeChannels,background, 0.01*QuantumRange,border,0,0,MagickFalse); if (status == MagickFalse) ThrowAPIException(magick_wand); background=DestroyPixelWand(background); border=DestroyPixelWand(border); drawing_wand=NewDrawingWand(); (void) PushDrawingWand(drawing_wand); (void) DrawRotate(drawing_wand,45); (void) DrawSetFontSize(drawing_wand,18); fill=NewPixelWand(); (void) PixelSetColor(fill,"green"); (void) DrawSetFillColor(drawing_wand,fill); fill=DestroyPixelWand(fill); (void) DrawAnnotation(drawing_wand,15,5,(const unsigned char *) "Magick"); (void) PopDrawingWand(drawing_wand); (void) MagickSetIteratorIndex(magick_wand,1); status=MagickDrawImage(magick_wand,drawing_wand); if (status == MagickFalse) ThrowAPIException(magick_wand); status=MagickAnnotateImage(magick_wand,drawing_wand,70,5,90,"Image"); if (status == MagickFalse) ThrowAPIException(magick_wand); drawing_wand=DestroyDrawingWand(drawing_wand); { unsigned char pixels[27], primary_colors[27] = { 0, 0, 0, 0, 0, 255, 0, 255, 0, 0, 255, 255, 255, 255, 255, 255, 0, 0, 255, 0, 255, 255, 255, 0, 128, 128, 128, }; (void) MagickSetIteratorIndex(magick_wand,2); status=MagickImportImagePixels(magick_wand,10,10,3,3,"RGB",CharPixel, primary_colors); if (status == MagickFalse) ThrowAPIException(magick_wand); status=MagickExportImagePixels(magick_wand,10,10,3,3,"RGB",CharPixel, pixels); if (status == MagickFalse) ThrowAPIException(magick_wand); for (i=0; i < 9; i++) if (pixels[i] != primary_colors[i]) { (void) FormatLocaleFile(stderr, "Get pixels does not match set pixels\n"); exit(1); } } (void) MagickSetIteratorIndex(magick_wand,3); status=MagickResizeImage(magick_wand,50,50,UndefinedFilter,1.0); if (status == MagickFalse) ThrowAPIException(magick_wand); MagickResetIterator(magick_wand); while (MagickNextImage(magick_wand) != MagickFalse) { (void) MagickSetImageDepth(magick_wand,8); (void) MagickSetImageCompression(magick_wand,RLECompression); } MagickResetIterator(magick_wand); (void) MagickSetIteratorIndex(magick_wand,4); (void) FormatLocaleFile(stdout, "Utilitize pixel iterator to draw diagonal...\n"); iterator=NewPixelIterator(magick_wand); if (iterator == (PixelIterator *) NULL) ThrowAPIException(magick_wand); pixels=PixelGetNextIteratorRow(iterator,&number_wands); for (i=0; pixels != (PixelWand **) NULL; i++) { (void) PixelSetColor(pixels[i],"#224466"); (void) PixelSyncIterator(iterator); pixels=PixelGetNextIteratorRow(iterator,&number_wands); } (void) PixelSyncIterator(iterator); iterator=DestroyPixelIterator(iterator); (void) FormatLocaleFile(stdout,"Write to wandtest_out.miff...\n"); status=MagickWriteImages(magick_wand,"wandtest_out.miff",MagickTrue); if (status == MagickFalse) ThrowAPIException(magick_wand); (void) FormatLocaleFile(stdout, "Change image format from \"MIFF\" to \"GIF\"...\n"); status=MagickSetImageFormat(magick_wand,"GIF"); if (status == MagickFalse) ThrowAPIException(magick_wand); (void) FormatLocaleFile(stdout,"Set delay between frames to %d seconds...\n", WandDelay); status=MagickSetImageDelay(magick_wand,100*WandDelay); if (status == MagickFalse) ThrowAPIException(magick_wand); delay=MagickGetImageDelay(magick_wand); if (delay != (100*WandDelay)) { (void) FormatLocaleFile(stderr,"Get delay does not match set delay\n"); exit(1); } (void) FormatLocaleFile(stdout,"Write to wandtest_out_0.gif...\n"); status=MagickWriteImages(magick_wand,"wandtest_out.gif",MagickTrue); if (status == MagickFalse) ThrowAPIException(magick_wand); (void) FormatLocaleFile(stdout,"Set, list, get, and delete wand option...\n"); status=MagickSetOption(magick_wand,"wand:custom-option",CustomOption); if (status == MagickFalse) ThrowAPIException(magick_wand); option=MagickGetOption(magick_wand,"wand:custom-option"); if ((option == (const char *) NULL) || (strlen(option) != strlen(CustomOption)) || (memcmp(option,CustomOption,strlen(option)) != 0)) { (void) FormatLocaleFile(stderr,"Option does not match\n"); exit(1); } options=MagickGetOptions(magick_wand,"*",&number_options); if (options != (char **) NULL) { for (i=0; i < (ssize_t) number_options; i++) { (void) FormatLocaleFile(stdout," %s\n",options[i]); options[i]=(char *) MagickRelinquishMemory(options[i]); } options=(char **) MagickRelinquishMemory(options); } status=MagickDeleteOption(magick_wand,"wand:custom-option"); if (status == MagickFalse) ThrowAPIException(magick_wand); (void) FormatLocaleFile(stdout, "Set, list, get, and delete wand property...\n"); status=MagickSetImageProperty(magick_wand,"wand:custom-property", CustomProperty); if (status == MagickFalse) ThrowAPIException(magick_wand); property=MagickGetImageProperty(magick_wand,"wand:custom-property"); if ((property == (const char *) NULL) || (strlen(property) != strlen(CustomProperty)) || (memcmp(property,CustomProperty,strlen(property)) != 0)) { (void) FormatLocaleFile(stderr,"Property does not match\n"); exit(1); } properties=MagickGetImageProperties(magick_wand,"*",&number_properties); if (properties != (char **) NULL) { for (i=0; i < (ssize_t) number_properties; i++) { (void) FormatLocaleFile(stdout," %s\n",properties[i]); properties[i]=(char *) MagickRelinquishMemory(properties[i]); } properties=(char **) MagickRelinquishMemory(properties); } status=MagickDeleteImageProperty(magick_wand,"wand:custom-property"); if (status == MagickFalse) ThrowAPIException(magick_wand); (void) FormatLocaleFile(stdout, "Set, list, get, and remove sRGB color profile...\n"); status=MagickSetImageProfile(magick_wand,"sRGB",sRGBProfile, sizeof(sRGBProfile)); if (status == MagickFalse) ThrowAPIException(magick_wand); profile=(unsigned char *) MagickGetImageProfile(magick_wand,"sRGB",&length); if ((profile == (unsigned char *) NULL) || (length != sizeof(sRGBProfile)) || (memcmp(profile,sRGBProfile,length) != 0)) { (void) FormatLocaleFile(stderr,"Profile does not match\n"); exit(1); } profile=(unsigned char *) MagickRelinquishMemory(profile); profiles=MagickGetImageProfiles(magick_wand,"*",&number_profiles); if (profiles != (char **) NULL) { for (i=0; i < (ssize_t) number_profiles; i++) { (void) FormatLocaleFile(stdout," %s\n",profiles[i]); profiles[i]=(char *) MagickRelinquishMemory(profiles[i]); } profiles=(char **) MagickRelinquishMemory(profiles); } profile=(unsigned char *) MagickRemoveImageProfile(magick_wand,"sRGB", &length); if ((profile == (unsigned char *) NULL) || (length != sizeof(sRGBProfile)) || (memcmp(profile,sRGBProfile,length) != 0)) { (void) FormatLocaleFile(stderr,"Profile does not match\n"); exit(1); } profile=(unsigned char *) MagickRelinquishMemory(profile); magick_wand=DestroyMagickWand(magick_wand); (void) FormatLocaleFile(stdout,"Wand tests pass.\n"); return(0); }
int main(int ac, char **av){ uint32_t *texture=malloc(TEXTURESIZE*TEXTURESIZE*4); MagickWandGenesis(); MagickWand *wand=NewMagickWand(); MagickReadImage(wand,"fire.png"); MagickExportImagePixels(wand,0,0,512,512,"ARGB",CharPixel,texture); DestroyMagickWand(wand); FILE *out_pipe=fopen("/dev/shm/zoom/video","wb"); // don't forget to change for 128x64 pixels per 1 bit uint8_t *screen=malloc(640*480*3); uint32_t *back_screen=malloc(640*480*3*4); int q,w,ox,oy; int out_pos; int frame_num=time(NULL); int rot; int fps,fps_show,fps_stamp; int si_int,co_int,zoom_int; uint32_t v,l=640*480*3; int interlace_state=0; uint8_t *tex_luma=malloc(TEXTURESIZE*TEXTURESIZE); uint8_t *tex_alpha=malloc(TEXTURESIZE*TEXTURESIZE); for(q=0;q<TEXTURESIZE*TEXTURESIZE;q++){ tex_alpha[q]=(texture[q]&0xFF); v=(((texture[q]>>8)&0xFF)*0.2989+((texture[q]>>16)&0xFF)*0.5870+((texture[q]>>24)&0xFF)*0.1140); if(v>255){v=255;} tex_luma[q]=v; } while(1){//main loop for(w=(interlace_state>>1)&1;w<480;w+=2){ for(q=((interlace_state+w))&1;q<640;q+=2){ out_pos=(q+w*640)*3; screen[out_pos+0]=0; //screen[out_pos+1]=0; //screen[out_pos+2]=0; } } int g; int alpha_pixel_int; int alpha_int; int tex_pos; uint32_t tex_pixel; for(g=0;g<8;g++){ alpha_int=(sin(frame_num/12.3+g*123)*.5+.5)*255.0; if(alpha_int>255){alpha_int=255;} if(alpha_int<0){alpha_int=0;} si_int=sin(frame_num/100.0+g*123123)*127.0; co_int=cos(frame_num/100.0+g*123123)*127.0; zoom_int=alpha_int*2+1; for(w=(interlace_state>>1)&1;w<480;w+=2){ for(q=((interlace_state+w))&1;q<640;q+=2){ out_pos=(q+w*640)*3; /*co,si -si,co*/ ox=(q*co_int/zoom_int+w*si_int+frame_num*7)>>8; oy=(q*(-si_int)+w*co_int/zoom_int+frame_num*3)>>8; tex_pos=(ox&TEXTUREMASK)|((oy&TEXTUREMASK)<<TEXTURESHIFT); alpha_pixel_int=tex_alpha[tex_pos]*alpha_int; v=((tex_luma[tex_pos]*alpha_pixel_int)>>16); v+=screen[out_pos+0]; if(v>255){v=255;} screen[out_pos+0]=v; screen[out_pos+1]=v; screen[out_pos+2]=v; } } } int v,l=640*480*3; /* for(q=0;q<l;q++){ v=back_screen[q]; if(v>255){v=255;} screen[q]=v; } */ fwrite(screen,1,640*480*3,out_pipe); frame_num++; interlace_state++; fps++; int current_time=time(NULL); if(current_time!=fps_stamp){ fps_stamp=current_time; fps_show=fps; fps=0; fprintf(stderr,"Current FPS: %d\n",fps_show); } } return EXIT_SUCCESS; }
static int scan_image (const char *filename) { if(exit_code == 3) return(-1); int found = 0; MagickWand *images = NewMagickWand(); if(!MagickReadImage(images, filename) && dump_error(images)) return(-1); unsigned seq, n = MagickGetNumberImages(images); for(seq = 0; seq < n; seq++) { if(exit_code == 3) return(-1); if(!MagickSetIteratorIndex(images, seq) && dump_error(images)) return(-1); zbar_image_t *zimage = zbar_image_create(); assert(zimage); zbar_image_set_format(zimage, zbar_fourcc('Y','8','0','0')); int width = MagickGetImageWidth(images); int height = MagickGetImageHeight(images); zbar_image_set_size(zimage, width, height); // extract grayscale image pixels // FIXME color!! ...preserve most color w/422P // (but only if it's a color image) size_t bloblen = width * height; unsigned char *blob = malloc(bloblen); zbar_image_set_data(zimage, blob, bloblen, zbar_image_free_data); if(!MagickExportImagePixels(images, 0, 0, width, height, "I", CharPixel, blob)) return(-1); if(xmllvl == 1) { xmllvl++; printf("<source href='%s'>\n", filename); } zbar_process_image(processor, zimage); // output result data const zbar_symbol_t *sym = zbar_image_first_symbol(zimage); for(; sym; sym = zbar_symbol_next(sym)) { zbar_symbol_type_t typ = zbar_symbol_get_type(sym); unsigned len = zbar_symbol_get_data_length(sym); if(typ == ZBAR_PARTIAL) continue; else if(xmllvl <= 0) { if(!xmllvl) printf("%s:", zbar_get_symbol_name(typ)); if(len && fwrite(zbar_symbol_get_data(sym), len, 1, stdout) != 1) { exit_code = 1; return(-1); } } else { if(xmllvl < 3) { xmllvl++; printf("<index num='%u'>\n", seq); } zbar_symbol_xml(sym, &xmlbuf, &xmlbuflen); if(fwrite(xmlbuf, xmlbuflen, 1, stdout) != 1) { exit_code = 1; return(-1); } } printf("\n"); found++; num_symbols++; } if(xmllvl > 2) { xmllvl--; printf("</index>\n"); } fflush(stdout); zbar_image_destroy(zimage); num_images++; if(zbar_processor_is_visible(processor)) { int rc = zbar_processor_user_wait(processor, -1); if(rc < 0 || rc == 'q' || rc == 'Q') exit_code = 3; } } if(xmllvl > 1) { xmllvl--; printf("</source>\n"); } if(!found) notfound++; DestroyMagickWand(images); return(0); }
static int ngx_http_video_thumbextractor_get_thumb(ngx_http_video_thumbextractor_loc_conf_t *cf, ngx_http_video_thumbextractor_file_info_t *info, int64_t second, ngx_uint_t width, ngx_uint_t height, caddr_t *out_buffer, size_t *out_len, ngx_pool_t *temp_pool, ngx_log_t *log) { int rc, videoStream, frameFinished = 0, frameDecoded = 0; unsigned int i; AVFormatContext *pFormatCtx = NULL; AVCodecContext *pCodecCtx = NULL; AVCodec *pCodec = NULL; AVFrame *pFrame = NULL, *pFrameRGB = NULL; uint8_t *buffer = NULL; AVPacket packet; size_t uncompressed_size; float scale = 0.0, new_scale = 0.0, scale_sws = 0.0, scale_w = 0.0, scale_h = 0.0; int sws_width = 0, sws_height = 0; ngx_flag_t needs_crop = 0; MagickWand *m_wand = NULL; MagickBooleanType mrc; unsigned char *bufferAVIO = NULL; AVIOContext *pAVIOCtx = NULL; char *filename = (char *) info->filename->data; // Open video file if ((info->fd = fopen(filename, "rb")) == NULL) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Couldn't open file %s", filename); rc = EXIT_FAILURE; goto exit; } // Get file size fseek(info->fd, 0, SEEK_END); info->size = ftell(info->fd) - info->offset; fseek(info->fd, 0, SEEK_SET); pFormatCtx = avformat_alloc_context(); bufferAVIO = (unsigned char *) av_malloc(NGX_HTTP_VIDEO_THUMBEXTRACTOR_BUFFER_SIZE * sizeof(unsigned char)); if ((pFormatCtx == NULL) || (bufferAVIO == NULL)) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Couldn't alloc AVIO buffer"); rc = NGX_ERROR; goto exit; } pAVIOCtx = avio_alloc_context(bufferAVIO, NGX_HTTP_VIDEO_THUMBEXTRACTOR_BUFFER_SIZE, 0, info, ngx_http_video_thumbextractor_read_data_from_file, NULL, ngx_http_video_thumbextractor_seek_data_from_file); if (pAVIOCtx == NULL) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Couldn't alloc AVIO context"); rc = NGX_ERROR; goto exit; } pFormatCtx->pb = pAVIOCtx; // Open video file if ((rc = avformat_open_input(&pFormatCtx, filename, NULL, NULL)) != 0) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Couldn't open file %s, error: %d", filename, rc); rc = (rc == AVERROR(NGX_ENOENT)) ? NGX_HTTP_VIDEO_THUMBEXTRACTOR_FILE_NOT_FOUND : NGX_ERROR; goto exit; } // Retrieve stream information #if LIBAVFORMAT_VERSION_INT <= AV_VERSION_INT(53, 5, 0) if (av_find_stream_info(pFormatCtx) < 0) { #else if (avformat_find_stream_info(pFormatCtx, NULL) < 0) { #endif ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Couldn't find stream information"); rc = NGX_ERROR; goto exit; } if ((pFormatCtx->duration > 0) && ((((float_t) pFormatCtx->duration / AV_TIME_BASE) - second)) < 0.1) { ngx_log_error(NGX_LOG_WARN, log, 0, "video thumb extractor module: seconds greater than duration"); rc = NGX_HTTP_VIDEO_THUMBEXTRACTOR_SECOND_NOT_FOUND; goto exit; } // Find the first video stream videoStream = -1; for (i = 0; i < pFormatCtx->nb_streams; i++) { if (pFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) { videoStream = i; break; } } if (videoStream == -1) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Didn't find a video stream"); rc = NGX_ERROR; goto exit; } // Get a pointer to the codec context for the video stream pCodecCtx = pFormatCtx->streams[videoStream]->codec; // Find the decoder for the video stream if ((pCodec = avcodec_find_decoder(pCodecCtx->codec_id)) == NULL) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Codec %d not found", pCodecCtx->codec_id); rc = NGX_ERROR; goto exit; } // Open codec #if LIBAVCODEC_VERSION_INT <= AV_VERSION_INT(53, 8, 0) if ((rc = avcodec_open(pCodecCtx, pCodec)) < 0) { #else if ((rc = avcodec_open2(pCodecCtx, pCodec, NULL)) < 0) { #endif ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Could not open codec, error %d", rc); rc = NGX_ERROR; goto exit; } if (height == 0) { // keep original format width = pCodecCtx->width; height = pCodecCtx->height; } else if (width == 0) { // calculate width related with original aspect width = height * pCodecCtx->width / pCodecCtx->height; } if ((width < 16) || (height < 16)) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Very small size requested, %d x %d", width, height); rc = NGX_ERROR; goto exit; } scale = (float) pCodecCtx->width / pCodecCtx->height; new_scale = (float) width / height; sws_width = width; sws_height = height; if (scale != new_scale) { scale_w = (float) width / pCodecCtx->width; scale_h = (float) height / pCodecCtx->height; scale_sws = (scale_w > scale_h) ? scale_w : scale_h; sws_width = pCodecCtx->width * scale_sws + 0.5; sws_height = pCodecCtx->height * scale_sws + 0.5; needs_crop = 1; } // Allocate video frame pFrame = avcodec_alloc_frame(); // Allocate an AVFrame structure pFrameRGB = avcodec_alloc_frame(); if ((pFrame == NULL) || (pFrameRGB == NULL)) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Could not alloc frame memory"); rc = NGX_ERROR; goto exit; } // Determine required buffer size and allocate buffer uncompressed_size = avpicture_get_size(PIX_FMT_RGB24, sws_width, sws_height) * sizeof(uint8_t); buffer = (uint8_t *) av_malloc(uncompressed_size); // Assign appropriate parts of buffer to image planes in pFrameRGB // Note that pFrameRGB is an AVFrame, but AVFrame is a superset of AVPicture avpicture_fill((AVPicture *) pFrameRGB, buffer, PIX_FMT_RGB24, sws_width, sws_height); if ((rc = av_seek_frame(pFormatCtx, -1, second * AV_TIME_BASE, cf->next_time ? 0 : AVSEEK_FLAG_BACKWARD)) < 0) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Seek to an invalid time, error: %d", rc); rc = NGX_HTTP_VIDEO_THUMBEXTRACTOR_SECOND_NOT_FOUND; goto exit; } int64_t second_on_stream_time_base = second * pFormatCtx->streams[videoStream]->time_base.den / pFormatCtx->streams[videoStream]->time_base.num; // Find the nearest frame rc = NGX_HTTP_VIDEO_THUMBEXTRACTOR_SECOND_NOT_FOUND; while (!frameFinished && av_read_frame(pFormatCtx, &packet) >= 0) { // Is this a packet from the video stream? if (packet.stream_index == videoStream) { // Decode video frame avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet); // Did we get a video frame? if (frameFinished) { frameDecoded = 1; if (!cf->only_keyframe && (pFrame->pkt_pts < second_on_stream_time_base)) { frameFinished = 0; } } } // Free the packet that was allocated by av_read_frame av_free_packet(&packet); } av_free_packet(&packet); if (frameDecoded) { // Convert the image from its native format to RGB struct SwsContext *img_resample_ctx = sws_getContext(pCodecCtx->width, pCodecCtx->height, pCodecCtx->pix_fmt, sws_width, sws_height, PIX_FMT_RGB24, SWS_BICUBIC, NULL, NULL, NULL); sws_scale(img_resample_ctx, (const uint8_t * const *) pFrame->data, pFrame->linesize, 0, pCodecCtx->height, pFrameRGB->data, pFrameRGB->linesize); sws_freeContext(img_resample_ctx); if (needs_crop) { MagickWandGenesis(); mrc = MagickTrue; if ((m_wand = NewMagickWand()) == NULL){ ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Could not allocate MagickWand memory"); mrc = MagickFalse; } if (mrc == MagickTrue) { mrc = MagickConstituteImage(m_wand, sws_width, sws_height, NGX_HTTP_VIDEO_THUMBEXTRACTOR_RGB, CharPixel, pFrameRGB->data[0]); } if (mrc == MagickTrue) { mrc = MagickSetImageGravity(m_wand, CenterGravity); } if (mrc == MagickTrue) { mrc = MagickCropImage(m_wand, width, height, (sws_width-width)/2, (sws_height-height)/2); } if (mrc == MagickTrue) { mrc = MagickExportImagePixels(m_wand, 0, 0, width, height, NGX_HTTP_VIDEO_THUMBEXTRACTOR_RGB, CharPixel, pFrameRGB->data[0]); } /* Clean up */ if (m_wand) { m_wand = DestroyMagickWand(m_wand); } MagickWandTerminus(); if (mrc != MagickTrue) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Error cropping image"); goto exit; } } // Compress to jpeg if (ngx_http_video_thumbextractor_jpeg_compress(cf, pFrameRGB->data[0], pCodecCtx->width, pCodecCtx->height, width, height, out_buffer, out_len, uncompressed_size, temp_pool) == 0) { rc = NGX_OK; } } exit: if ((info->fd != NULL) && (fclose(info->fd) != 0)) { ngx_log_error(NGX_LOG_ERR, log, 0, "video thumb extractor module: Couldn't close file %s", filename); rc = EXIT_FAILURE; } /* destroy unneeded objects */ // Free the RGB image if (buffer != NULL) av_free(buffer); if (pFrameRGB != NULL) av_freep(&pFrameRGB); // Free the YUV frame if (pFrame != NULL) av_freep(&pFrame); // Close the codec if (pCodecCtx != NULL) avcodec_close(pCodecCtx); // Close the video file if (pFormatCtx != NULL) { #if LIBAVFORMAT_VERSION_INT <= AV_VERSION_INT(53, 5, 0) av_close_input_file(pFormatCtx); #else avformat_close_input(&pFormatCtx); #endif } // Free AVIO context if (pAVIOCtx != NULL) av_freep(pAVIOCtx); return rc; } static void ngx_http_video_thumbextractor_init_libraries(void) { // Register all formats and codecs av_register_all(); av_log_set_level(AV_LOG_ERROR); } static uint32_t ngx_http_video_thumbextractor_jpeg_compress(ngx_http_video_thumbextractor_loc_conf_t *cf, uint8_t * buffer, int in_width, int in_height, int out_width, int out_height, caddr_t *out_buffer, size_t *out_len, size_t uncompressed_size, ngx_pool_t *temp_pool) { struct jpeg_compress_struct cinfo; struct jpeg_error_mgr jerr; JSAMPROW row_pointer[1]; int row_stride; int image_d_width = in_width; int image_d_height = in_height; if ( !buffer ) return 1; cinfo.err = jpeg_std_error(&jerr); jpeg_create_compress(&cinfo); ngx_http_video_thumbextractor_jpeg_memory_dest(&cinfo, out_buffer, out_len, uncompressed_size, temp_pool); cinfo.image_width = out_width; cinfo.image_height = out_height; cinfo.input_components = 3; cinfo.in_color_space = JCS_RGB; jpeg_set_defaults(&cinfo); /* Important: Header info must be set AFTER jpeg_set_defaults() */ cinfo.write_JFIF_header = TRUE; cinfo.JFIF_major_version = 1; cinfo.JFIF_minor_version = 2; cinfo.density_unit = 1; /* 0=unknown, 1=dpi, 2=dpcm */ /* Image DPI is determined by Y_density, so we leave that at jpeg_dpi if possible and crunch X_density instead (PAR > 1) */ if (out_height * image_d_width > out_width * image_d_height) { image_d_width = out_height * image_d_width / image_d_height; image_d_height = out_height; } else { image_d_height = out_width * image_d_height / image_d_width; image_d_width = out_width; } cinfo.X_density = cf->jpeg_dpi * out_width / image_d_width; cinfo.Y_density = cf->jpeg_dpi * out_height / image_d_height; cinfo.write_Adobe_marker = TRUE; jpeg_set_quality(&cinfo, cf->jpeg_quality, cf->jpeg_baseline); cinfo.optimize_coding = cf->jpeg_optimize; cinfo.smoothing_factor = cf->jpeg_smooth; if ( cf->jpeg_progressive_mode ) { jpeg_simple_progression(&cinfo); } jpeg_start_compress(&cinfo, TRUE); row_stride = out_width * 3; while (cinfo.next_scanline < cinfo.image_height) { row_pointer[0] = &buffer[cinfo.next_scanline * row_stride]; (void)jpeg_write_scanlines(&cinfo, row_pointer,1); } jpeg_finish_compress(&cinfo); jpeg_destroy_compress(&cinfo); return 0; } typedef struct { struct jpeg_destination_mgr pub; /* public fields */ unsigned char **buf; size_t *size; size_t uncompressed_size; ngx_pool_t *pool; } ngx_http_video_thumbextractor_jpeg_destination_mgr; static void ngx_http_video_thumbextractor_init_destination (j_compress_ptr cinfo) { ngx_http_video_thumbextractor_jpeg_destination_mgr * dest = (ngx_http_video_thumbextractor_jpeg_destination_mgr *) cinfo->dest; *(dest->buf) = ngx_palloc(dest->pool, dest->uncompressed_size); *(dest->size) = dest->uncompressed_size; dest->pub.next_output_byte = *(dest->buf); dest->pub.free_in_buffer = dest->uncompressed_size; }