本文整理汇总了C++中BitstreamReader::readBits方法的典型用法代码示例。如果您正苦于以下问题：C++ BitstreamReader::readBits方法的具体用法？C++ BitstreamReader::readBits怎么用？C++ BitstreamReader::readBits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BitstreamReader的用法示例。
在下文中一共展示了BitstreamReader::readBits方法的2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: main
int main(int argc, char *argv[])
{
BitstreamReader *br;
BitstreamReader::STATUS sts;
struct _stati64 st;
unsigned __int64 file_size;
const char *in_file;
const char *out_file;
int bit_count = 0;
int bit_count_mod_8 = 0;
unsigned __int64 byte_count = 0;
srand(0);
FILE *out_fp;
int i;
u32 bits;
if (argc != 3) {
fprintf(stderr,"Usage: %s <in_file> <out_file>\n",argv[0]);
exit(1);
}
in_file = argv[1];
out_file = argv[2];
if (_stati64(in_file,&st) < 0) {
perror("Error: Cannot stat input file");
exit(1);
}
file_size = st.st_size;
printf("Size of file '%s' is: %I64u bytes\n",in_file,(__int64)file_size);
sts = BitstreamReader::create(in_file,&br);
if (sts != BitstreamReader::STS_OK) {
fprintf(stderr,"Error: Cannot create bitstream reader\n");
exit(1);
}
out_fp = fopen(out_file,"w");
if (out_fp == NULL) {
perror("Error: Cannot open output file");
br->destroy();
exit(1);
}
while (file_size - byte_count >= 4) {
int num_bits = (int)((double)rand()/RAND_MAX*32);
// printf("Attempting to read %d bytes\n",num_bits);
sts = br->readBits(&bits,num_bits);
if (sts != BitstreamReader::STS_OK) {
fprintf(stderr,"Error reading %d bits from the input file\n",num_bits);
br->destroy();
exit(1);
}
for (i = num_bits-1; i>=0; i--) {
if (bits & (u32(1) << i)) {
putc('1',out_fp);
} else {
putc('0',out_fp);
}
}
// bit_count += num_bits;
// byte_count = bit_count/8;
bit_count = (bit_count_mod_8 + num_bits);
byte_count += (bit_count)/8;
bit_count_mod_8 = bit_count % 8;
}
bit_count = (32 - (bit_count%32));
sts = br->readBits(&bits,bit_count);
if (sts != BitstreamReader::STS_OK) {
fprintf(stderr,"Error reading %d bits from the input file\n",32-bit_count);
br->destroy();
exit(1);
}
for (i = bit_count -1; i>=0; i--) {
if (bits & (u32(1) << i)) {
putc('1',out_fp);
} else {
putc('0',out_fp);
}
}
fclose(out_fp);
br->destroy();
return 0;
}示例2: main
int main(int argc, char *argv[])
{
BitstreamReader *br;
BitstreamReader::STATUS sts;
struct _stati64 st;
unsigned __int64 file_size;
const char *in_file;
const char *out_file;
int bit_count = 0;
int bit_count_mod_8 = 0;
unsigned __int64 byte_count = 0;
srand(0);
FILE *out_fp;
int i;
u32 bits;
HANDLE h_in_file;
HANDLE h_mem_mapping;
unsigned char *mem_buf;
if (argc != 3) {
fprintf(stderr,"Usage: %s <in_file> <out_file>\n",argv[0]);
exit(1);
}
in_file = argv[1];
out_file = argv[2];
if (_stati64(in_file,&st) < 0) {
perror("Error: Cannot stat input file");
exit(1);
}
file_size = st.st_size;
printf("Size of file '%s' is: %I64u bytes\n",in_file,(__int64)file_size);
if (file_size >= 0x10000000I64) {
fprintf(stderr,"Error: File is larger than %I64 bytes\n",0x10000000I64);
exit(1);
}
h_in_file = CreateFile(in_file,GENERIC_READ,0,NULL,OPEN_EXISTING,0,NULL);
if (h_in_file == INVALID_HANDLE_VALUE) {
fprintf(stderr,"Error: Cannot open input file '%s'\n",in_file);
exit(1);
}
h_mem_mapping = CreateFileMapping(h_in_file,NULL,PAGE_READONLY,0,0,NULL);
if (h_mem_mapping == NULL) {
fprintf(stderr,"Error: Cannot create file mapping object for file: %s\n",in_file);
CloseHandle(h_in_file);
exit(1);
}
mem_buf = (unsigned char*)MapViewOfFile(h_mem_mapping,FILE_MAP_READ,0,0,(DWORD)file_size);
if (mem_buf == NULL) {
fprintf(stderr,"Error: Cannot map file '%s'\n",in_file);
CloseHandle(h_mem_mapping);
CloseHandle(h_in_file);
exit(1);
}
sts = BitstreamReader::create(mem_buf,(size_t)file_size,&br);
if (sts != BitstreamReader::STS_OK) {
fprintf(stderr,"Error: Cannot create bitstream reader\n");
CloseHandle(h_mem_mapping);
CloseHandle(h_in_file);
exit(1);
}
out_fp = fopen(out_file,"w");
if (out_fp == NULL) {
perror("Error: Cannot open output file");
br->destroy();
CloseHandle(h_mem_mapping);
CloseHandle(h_in_file);
exit(1);
}
while (file_size - byte_count >= 4) {
int num_bits = (int)((double)rand()/RAND_MAX*32);
// printf("Attempting to read %d bytes\n",num_bits);
sts = br->readBits(&bits,num_bits);
if (sts != BitstreamReader::STS_OK) {
fprintf(stderr,"Error reading %d bits from the input file\n",num_bits);
fclose(out_fp);
br->destroy();
CloseHandle(h_mem_mapping);
CloseHandle(h_in_file);
exit(1);
}
for (i = num_bits-1; i>=0; i--) {
//.........这里部分代码省略.........