本文整理汇总了C++中LibRaw::open_buffer方法的典型用法代码示例。如果您正苦于以下问题：C++ LibRaw::open_buffer方法的具体用法？C++ LibRaw::open_buffer怎么用？C++ LibRaw::open_buffer使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LibRaw的用法示例。
在下文中一共展示了LibRaw::open_buffer方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: loadHalfPreview
bool KDcraw::loadHalfPreview(QByteArray& imgData, const QBuffer& inBuffer)
{
QString rawFilesExt(KDcrawIface::KDcraw::rawFiles());
LibRaw raw;
QByteArray inData = inBuffer.data();
int ret = raw.open_buffer((void*) inData.data(), (size_t) inData.size());
if (ret != LIBRAW_SUCCESS)
{
qCDebug(LIBKDCRAW_LOG) << "LibRaw: failed to run dcraw_make_mem_image: " << libraw_strerror(ret);
raw.recycle();
return false;
}
QImage image;
if (!Private::loadHalfPreview(image, raw))
{
qCDebug(LIBKDCRAW_LOG) << "KDcraw: failed to get half preview: " << libraw_strerror(ret);
return false;
}
QBuffer buffer(&imgData);
buffer.open(QIODevice::WriteOnly);
image.save(&buffer, "JPG");
return true;
}示例2: loadEmbeddedPreview
bool KDcraw::loadEmbeddedPreview(QByteArray& imgData, const QBuffer& buffer)
{
QString rawFilesExt(KDcrawIface::KDcraw::rawFiles());
LibRaw raw;
QByteArray inData = buffer.data();
int ret = raw.open_buffer((void*) inData.data(), (size_t) inData.size());
if (ret != LIBRAW_SUCCESS)
{
qCDebug(LIBKDCRAW_LOG) << "LibRaw: failed to run open_buffer: " << libraw_strerror(ret);
raw.recycle();
return false;
}
return (Private::loadEmbeddedPreview(imgData, raw));
}示例3: main
//.........这里部分代码省略.........
{
char outfn[1024];
if(verbosity) printf("Processing file %s\n",argv[arg]);
timerstart();
#ifndef WIN32
if(use_mmap)
{
int file = open(argv[arg],O_RDONLY);
struct stat st;
if(file<0)
{
fprintf(stderr,"Cannot open %s: %s\n",argv[arg],strerror(errno));
continue;
}
if(fstat(file,&st))
{
fprintf(stderr,"Cannot stat %s: %s\n",argv[arg],strerror(errno));
close(file);
continue;
}
int pgsz = getpagesize();
msize = ((st.st_size+pgsz-1)/pgsz)*pgsz;
iobuffer = mmap(NULL,msize,PROT_READ,MAP_PRIVATE,file,0);
if(!iobuffer)
{
fprintf(stderr,"Cannot mmap %s: %s\n",argv[arg],strerror(errno));
close(file);
continue;
}
close(file);
if( (ret = RawProcessor.open_buffer(iobuffer,st.st_size) != LIBRAW_SUCCESS))
{
fprintf(stderr,"Cannot open_buffer %s: %s\n",argv[arg],libraw_strerror(ret));
continue; // no recycle b/c open file will recycle itself
}
}
else
#endif
if (use_mem)
{
int file = open(argv[arg],O_RDONLY|O_BINARY);
struct stat st;
if(file<0)
{
fprintf(stderr,"Cannot open %s: %s\n",argv[arg],strerror(errno));
continue;
}
if(fstat(file,&st))
{
fprintf(stderr,"Cannot stat %s: %s\n",argv[arg],strerror(errno));
close(file);
continue;
}
if(!(iobuffer = malloc(st.st_size)))
{
fprintf(stderr,"Cannot allocate %d kbytes for memory buffer\n",(int)(st.st_size/1024));
close(file);
continue;
}
int rd;
if(st.st_size!=(rd=read(file,iobuffer,st.st_size)))
{示例4: libraw_open_buffer
int libraw_open_buffer(libraw_data_t* lr, void *buffer, size_t size)
{
if(!lr) return EINVAL;
LibRaw *ip = (LibRaw*) lr->parent_class;
return ip->open_buffer(buffer,size);
}示例5: main
//.........这里部分代码省略.........
return 1;
}
}
putenv ((char*)"TZ=UTC"); // dcraw compatibility, affects TIFF datestamp field
OUT.filtering_mode = LIBRAW_FILTERING_AUTOMATIC;
#define P1 RawProcessor.imgdata.idata
#define S RawProcessor.imgdata.sizes
#define C RawProcessor.imgdata.color
#define T RawProcessor.imgdata.thumbnail
#define P2 RawProcessor.imgdata.other
if(verbosity>1)
RawProcessor.set_progress_handler(my_progress_callback,(void*)"Sample data passed");
#ifdef _OPENMP
if(verbosity)
printf ("Using %d threads\n", omp_get_max_threads());
#endif
for ( ; arg < argc; arg++)
{
char outfn[1024];
if(verbosity) printf("Processing file %s\n",argv[arg]);
#ifndef WIN32
if(use_mmap)
{
int file = open(argv[arg],O_RDONLY);
struct stat st;
if(file<0)
{
fprintf(stderr,"Cannot open %s: %s\n",argv[arg],strerror(errno));
continue;
}
if(fstat(file,&st))
{
fprintf(stderr,"Cannot stat %s: %s\n",argv[arg],strerror(errno));
close(file);
continue;
}
int pgsz = getpagesize();
msize = ((st.st_size+pgsz-1)/pgsz)*pgsz;
iobuffer = mmap(NULL,msize,PROT_READ,MAP_PRIVATE,file,0);
if(!iobuffer)
{
fprintf(stderr,"Cannot mmap %s: %s\n",argv[arg],strerror(errno));
close(file);
continue;
}
close(file);
if( (ret = RawProcessor.open_buffer(iobuffer,st.st_size) != LIBRAW_SUCCESS))
{
fprintf(stderr,"Cannot open_buffer %s: %s\n",argv[arg],libraw_strerror(ret));
continue; // no recycle b/c open file will recycle itself
}
}
else
#endif
{
if( (ret = RawProcessor.open_file(argv[arg])) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot open %s: %s\n",argv[arg],libraw_strerror(ret));
continue; // no recycle b/c open_file will recycle itself
}
}
if( (ret = RawProcessor.unpack() ) != LIBRAW_SUCCESS)
{
fprintf(stderr,"Cannot unpack %s: %s\n",argv[arg],libraw_strerror(ret));
continue;
}
if (LIBRAW_SUCCESS != (ret = RawProcessor.dcraw_process()))
{
fprintf(stderr,"Cannot do postpocessing on %s: %s\n",argv[arg],libraw_strerror(ret));
if(LIBRAW_FATAL_ERROR(ret))
continue;
}
snprintf(outfn,sizeof(outfn),
"%s.%s",
argv[arg], OUT.output_tiff ? "tiff" : (P1.colors>1?"ppm":"pgm"));
if(verbosity)
{
printf("Writing file %s\n",outfn);
}
if( LIBRAW_SUCCESS != (ret = RawProcessor.dcraw_ppm_tiff_writer(outfn)))
fprintf(stderr,"Cannot write %s: %s\n",outfn,libraw_strerror(ret));
#ifndef WIN32
if(use_mmap && iobuffer)
{
munmap(iobuffer,msize);
iobuffer=0;
}
#endif
RawProcessor.recycle(); // just for show this call
}
return 0;
}