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Refine typo in kernel.

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winlin 2019-04-22 09:19:05 +08:00
parent 735176cab4
commit 35fe05d62c
9 changed files with 1321 additions and 1976 deletions
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132
trunk/src/kernel/srs_kernel_utility.hpp
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@ -33,160 +33,132 @@
class SrsBuffer;
class SrsBitBuffer;
// compare
// Basic compare function.
#define srs_min(a, b) (((a) < (b))? (a) : (b))
#define srs_max(a, b) (((a) < (b))? (b) : (a))
// read nalu uev.
// To read H.264 NALU uev.
extern srs_error_t srs_avc_nalu_read_uev(SrsBitBuffer* stream, int32_t& v);
extern srs_error_t srs_avc_nalu_read_bit(SrsBitBuffer* stream, int8_t& v);
// get current system time in srs_utime_t, use cache to avoid performance problem
// Get current system time in srs_utime_t, use cache to avoid performance problem
extern srs_utime_t srs_get_system_time();
extern srs_utime_t srs_get_system_startup_time();
// the deamon st-thread will update it.
// A daemon st-thread updates it.
extern srs_utime_t srs_update_system_time();
// the any address for listener,
// it's "0.0.0.0" for ipv4, and "::" for ipv6.
// The "ANY" address to listen, it's "0.0.0.0" for ipv4, and "::" for ipv6.
extern std::string srs_any_address4listener();
// dns resolve utility, return the resolved ip address.
// The dns resolve utility, return the resolved ip address.
extern std::string srs_dns_resolve(std::string host, int& family);
// split the host:port to host and port.
// Split the host:port to host and port.
// @remark the hostport format in <host[:port]>, where port is optional.
extern void srs_parse_hostport(const std::string& hostport, std::string& host, int& port);
// parse the endpoint to ip and port.
// @remark hostport format in <[ip:]port>, where ip is default to "0.0.0.0".
// Parse the endpoint to ip and port.
// @remark The hostport format in <[ip:]port>, where ip is default to "0.0.0.0".
extern void srs_parse_endpoint(std::string hostport, std::string& ip, int& port);
// parse the int64 value to string.
// Parse the int64 value to string.
extern std::string srs_int2str(int64_t value);
// parse the float value to string, precise is 2.
// Parse the float value to string, precise is 2.
extern std::string srs_float2str(double value);
// convert bool to switch value, true to "on", false to "off".
// Convert bool to switch value, true to "on", false to "off".
extern std::string srs_bool2switch(bool v);
// whether system is little endian
// Whether system is little endian
extern bool srs_is_little_endian();
// replace old_str to new_str of str
// Replace old_str to new_str of str
extern std::string srs_string_replace(std::string str, std::string old_str, std::string new_str);
// trim char in trim_chars of str
// Trim char in trim_chars of str
extern std::string srs_string_trim_end(std::string str, std::string trim_chars);
// trim char in trim_chars of str
// Trim char in trim_chars of str
extern std::string srs_string_trim_start(std::string str, std::string trim_chars);
// remove char in remove_chars of str
// Remove char in remove_chars of str
extern std::string srs_string_remove(std::string str, std::string remove_chars);
// remove first substring from str
// Remove first substring from str
extern std::string srs_erase_first_substr(std::string str, std::string erase_string);
// remove last substring from str
// Remove last substring from str
extern std::string srs_erase_last_substr(std::string str, std::string erase_string);
// whether string end with
// Whether string end with
extern bool srs_string_ends_with(std::string str, std::string flag);
extern bool srs_string_ends_with(std::string str, std::string flag0, std::string flag1);
extern bool srs_string_ends_with(std::string str, std::string flag0, std::string flag1, std::string flag2);
extern bool srs_string_ends_with(std::string str, std::string flag0, std::string flag1, std::string flag2, std::string flag3);
// whether string starts with
// Whether string starts with
extern bool srs_string_starts_with(std::string str, std::string flag);
extern bool srs_string_starts_with(std::string str, std::string flag0, std::string flag1);
extern bool srs_string_starts_with(std::string str, std::string flag0, std::string flag1, std::string flag2);
extern bool srs_string_starts_with(std::string str, std::string flag0, std::string flag1, std::string flag2, std::string flag3);
// whether string contains with
// Whether string contains with
extern bool srs_string_contains(std::string str, std::string flag);
extern bool srs_string_contains(std::string str, std::string flag0, std::string flag1);
extern bool srs_string_contains(std::string str, std::string flag0, std::string flag1, std::string flag2);
// find the min match in str for flags.
// Find the min match in str for flags.
extern std::string srs_string_min_match(std::string str, std::vector<std::string> flags);
// split the string by flag to array.
// Split the string by flag to array.
extern std::vector<std::string> srs_string_split(std::string str, std::string flag);
extern std::vector<std::string> srs_string_split(std::string str, std::vector<std::string> flags);
/**
* compare the memory in bytes.
* @return true if completely equal; otherwise, false.
*/
// Compare the memory in bytes.
// @return true if completely equal; otherwise, false.
extern bool srs_bytes_equals(void* pa, void* pb, int size);
// create dir recursively
// Create dir recursively
extern srs_error_t srs_create_dir_recursively(std::string dir);
// whether path exists.
// Whether path exists.
extern bool srs_path_exists(std::string path);
// get the dirname of path, for instance, dirname("/live/livestream")="/live"
// Get the dirname of path, for instance, dirname("/live/livestream")="/live"
extern std::string srs_path_dirname(std::string path);
// get the basename of path, for instance, basename("/live/livestream")="livestream"
// Get the basename of path, for instance, basename("/live/livestream")="livestream"
extern std::string srs_path_basename(std::string path);
// get the filename of path, for instance, filename("livestream.flv")="livestream"
// Get the filename of path, for instance, filename("livestream.flv")="livestream"
extern std::string srs_path_filename(std::string path);
// get the file extension of path, for instance, filext("live.flv")=".flv"
// Get the file extension of path, for instance, filext("live.flv")=".flv"
extern std::string srs_path_filext(std::string path);
/**
* whether stream starts with the avc NALU in "AnnexB"
* from ISO_IEC_14496-10-AVC-2003.pdf, page 211.
* start code must be "N[00] 00 00 01" where N>=0
* @param pnb_start_code output the size of start code, must >=3.
* NULL to ignore.
*/
// Whether stream starts with the avc NALU in "AnnexB" from ISO_IEC_14496-10-AVC-2003.pdf, page 211.
// The start code must be "N[00] 00 00 01" where N>=0
// @param pnb_start_code output the size of start code, must >=3. NULL to ignore.
extern bool srs_avc_startswith_annexb(SrsBuffer* stream, int* pnb_start_code = NULL);
/**
* whether stream starts with the aac ADTS
* from ISO_IEC_14496-3-AAC-2001.pdf, page 75, 1.A.2.2 ADTS.
* start code must be '1111 1111 1111'B, that is 0xFFF
*/
// Whether stream starts with the aac ADTS from ISO_IEC_14496-3-AAC-2001.pdf, page 75, 1.A.2.2 ADTS.
// The start code must be '1111 1111 1111'B, that is 0xFFF
extern bool srs_aac_startswith_adts(SrsBuffer* stream);
/**
* cacl the crc32 of bytes in buf, for ffmpeg.
*/
// Cacl the crc32 of bytes in buf, for ffmpeg.
extern uint32_t srs_crc32_mpegts(const void* buf, int size);
/**
* calc the crc32 of bytes in buf by IEEE, for zip.
*/
// Calc the crc32 of bytes in buf by IEEE, for zip.
extern uint32_t srs_crc32_ieee(const void* buf, int size, uint32_t previous = 0);
/**
* Decode a base64-encoded string.
*/
// Decode a base64-encoded string.
extern srs_error_t srs_av_base64_decode(std::string cipher, std::string& plaintext);
/**
* Calculate the output size needed to base64-encode x bytes to a
* null-terminated string.
*/
// Calculate the output size needed to base64-encode x bytes to a null-terminated string.
#define SRS_AV_BASE64_SIZE(x) (((x)+2) / 3 * 4 + 1)
/**
* convert hex string to data.
* for example, p=config='139056E5A0'
* output hex to data={0x13, 0x90, 0x56, 0xe5, 0xa0}
*/
// Convert hex string to data, for example, p=config='139056E5A0'
// The output data in hex {0x13, 0x90, 0x56, 0xe5, 0xa0} as such.
extern int srs_hex_to_data(uint8_t* data, const char* p, int size);
/**
* convert data string to hex.
*/
// Convert data string to hex.
extern char *srs_data_to_hex(char *des, const uint8_t *src, int len);
/**
* generate the c0 chunk header for msg.
* @param cache, the cache to write header.
* @param nb_cache, the size of cache.
* @return the size of header. 0 if cache not enough.
*/
// Generate the c0 chunk header for msg.
// @param cache, the cache to write header.
// @param nb_cache, the size of cache.
// @return The size of header. 0 if cache not enough.
extern int srs_chunk_header_c0(int perfer_cid, uint32_t timestamp, int32_t payload_length, int8_t message_type, int32_t stream_id, char* cache, int nb_cache);
/**
* generate the c3 chunk header for msg.
* @param cache, the cache to write header.
* @param nb_cache, the size of cache.
* @return the size of header. 0 if cache not enough.
*/
// Generate the c3 chunk header for msg.
// @param cache, the cache to write header.
// @param nb_cache, the size of cache.
// @return the size of header. 0 if cache not enough.
extern int srs_chunk_header_c3(int perfer_cid, uint32_t timestamp, char* cache, int nb_cache);
#endif