foobar2000 SDK  2015-01-14
Public Member Functions | Static Public Member Functions
tag_processor_id3v2abstract

#include <tag_processor.h>

+ Inheritance diagram for tag_processor_id3v2:

Public Member Functions

 FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT (tag_processor_id3v2)
 
virtual void read (const service_ptr_t< file > &p_file, file_info &p_info, abort_callback &p_abort)=0
 
virtual void write (const service_ptr_t< file > &p_file, const file_info &p_info, abort_callback &p_abort)=0
 
virtual void write_ex (tag_write_callback &p_callback, const service_ptr_t< file > &p_file, const file_info &p_info, abort_callback &p_abort)=0
 
- Public Member Functions inherited from service_base
template<typename outPtr_t >
bool cast (outPtr_t &outPtr)
 
virtual int service_add_ref ()=0 throw ()
 
virtual bool service_query (service_ptr_t< service_base > &p_out, const GUID &p_guid)
 
template<class T >
bool service_query_t (service_ptr_t< T > &p_out)
 
virtual int service_release ()=0 throw ()
 

Static Public Member Functions

static bool g_get (service_ptr_t< tag_processor_id3v2 > &p_out)
 
static t_size g_multiskip (const service_ptr_t< file > &p_file, t_filesize &p_size_skipped, abort_callback &p_abort)
 
static void g_remove (const service_ptr_t< file > &p_file, t_filesize &p_size_removed, abort_callback &p_abort)
 
static void g_remove_ex (tag_write_callback &p_callback, const service_ptr_t< file > &p_file, t_filesize &p_size_removed, abort_callback &p_abort)
 
static void g_skip (const service_ptr_t< file > &p_file, t_filesize &p_size_skipped, abort_callback &p_abort)
 
static void g_skip_at (const service_ptr_t< file > &p_file, t_filesize p_base, t_filesize &p_size_skipped, abort_callback &p_abort)
 

Additional Inherited Members

- Public Types inherited from service_base
typedef service_base t_interface
 
- Protected Member Functions inherited from service_base
 service_base ()
 
 ~service_base ()
 

Detailed Description

For internal use - call tag_processor namespace methods instead.

Definition at line 25 of file tag_processor.h.

Member Function Documentation

tag_processor_id3v2::FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT ( tag_processor_id3v2  )
bool tag_processor_id3v2::g_get ( service_ptr_t< tag_processor_id3v2 > &  p_out)
static

Definition at line 3 of file tag_processor_id3v2.cpp.

4 {
5  return service_enum_t<tag_processor_id3v2>().first(p_out);
6 }
service_enum_t
Definition: service.h:573
t_size tag_processor_id3v2::g_multiskip ( const service_ptr_t< file > &  p_file,
t_filesize &  p_size_skipped,
abort_callback &  p_abort 
)
static

Definition at line 47 of file tag_processor_id3v2.cpp.

47  {
48  t_filesize offset = 0;
49  t_size count = 0;
50  for(;;) {
51  t_filesize delta;
52  g_skip_at(p_file, offset, delta, p_abort);
53  if (delta == 0) break;
54  offset += delta;
55  ++count;
56  }
57  p_size_skipped = offset;
58  return count;
59 }
t_size
size_t t_size
Definition: int_types.h:48
tag_processor_id3v2::g_skip_at
static void g_skip_at(const service_ptr_t< file > &p_file, t_filesize p_base, t_filesize &p_size_skipped, abort_callback &p_abort)
Definition: tag_processor_id3v2.cpp:64
foobar2000_io::t_filesize
t_uint64 t_filesize
Type used for file size related variables.
Definition: filesystem.h:8
void tag_processor_id3v2::g_remove ( const service_ptr_t< file > &  p_file,
t_filesize &  p_size_removed,
abort_callback &  p_abort 
)
static

Definition at line 8 of file tag_processor_id3v2.cpp.

8  {
9  tag_write_callback_dummy cb;
10  g_remove_ex(cb,p_file,p_size_removed,p_abort);
11 }
tag_write_callback_dummy
Definition: tag_processor.h:19
tag_processor_id3v2::g_remove_ex
static void g_remove_ex(tag_write_callback &p_callback, const service_ptr_t< file > &p_file, t_filesize &p_size_removed, abort_callback &p_abort)
Definition: tag_processor_id3v2.cpp:13
void tag_processor_id3v2::g_remove_ex ( tag_write_callback &  p_callback,
const service_ptr_t< file > &  p_file,
t_filesize &  p_size_removed,
abort_callback &  p_abort 
)
static

Definition at line 13 of file tag_processor_id3v2.cpp.

14 {
15  p_file->ensure_seekable();
16 
17  t_filesize len;
18 
19  len = p_file->get_size(p_abort);
20 
21  if (len == filesize_invalid) throw exception_io_no_length();
22 
23  p_file->seek(0,p_abort);
24 
25  t_uint64 offset;
26  g_multiskip(p_file,offset,p_abort);
27 
28  if (offset>0 && offset<len)
29  {
30  len-=offset;
31  service_ptr_t<file> temp;
32  if (p_callback.open_temp_file(temp,p_abort)) {
33  file::g_transfer_object(p_file,temp,len,p_abort);
34  } else {
35  if (len > 16*1024*1024) filesystem::g_open_temp(temp,p_abort);
36  else filesystem::g_open_tempmem(temp,p_abort);
37  file::g_transfer_object(p_file,temp,len,p_abort);
38  p_file->seek(0,p_abort);
39  p_file->set_eof(p_abort);
40  temp->seek(0,p_abort);
41  file::g_transfer_object(temp,p_file,len,p_abort);
42  }
43  }
44  p_size_removed = offset;
45 }
tag_processor_id3v2::g_multiskip
static t_size g_multiskip(const service_ptr_t< file > &p_file, t_filesize &p_size_skipped, abort_callback &p_abort)
Definition: tag_processor_id3v2.cpp:47
t_uint64
uint64_t t_uint64
Definition: int_types.h:3
foobar2000_io::filesize_invalid
static const t_filesize filesize_invalid
Invalid/unknown file size constant. Also see: t_filesize.
Definition: filesystem.h:16
tag_write_callback::open_temp_file
virtual bool open_temp_file(service_ptr_t< file > &p_out, abort_callback &p_abort)=0
Called only once per operation (or not called at all when operation being performed can be done in-pl...
foobar2000_io::t_filesize
t_uint64 t_filesize
Type used for file size related variables.
Definition: filesystem.h:8
service_ptr_t< file >
void tag_processor_id3v2::g_skip ( const service_ptr_t< file > &  p_file,
t_filesize &  p_size_skipped,
abort_callback &  p_abort 
)
static

Definition at line 60 of file tag_processor_id3v2.cpp.

60  {
61  g_skip_at(p_file, 0, p_size_skipped, p_abort);
62 }
tag_processor_id3v2::g_skip_at
static void g_skip_at(const service_ptr_t< file > &p_file, t_filesize p_base, t_filesize &p_size_skipped, abort_callback &p_abort)
Definition: tag_processor_id3v2.cpp:64
void tag_processor_id3v2::g_skip_at ( const service_ptr_t< file > &  p_file,
t_filesize  p_base,
t_filesize &  p_size_skipped,
abort_callback &  p_abort 
)
static

Definition at line 64 of file tag_processor_id3v2.cpp.

64  {
65 
66  unsigned char tmp[10];
67 
68  p_file->seek ( p_base, p_abort );
69 
70  if (p_file->read( tmp, sizeof(tmp), p_abort) != sizeof(tmp)) {
71  p_file->seek ( p_base, p_abort );
72  p_size_skipped = 0;
73  return;
74  }
75 
76  if (
77  0 != memcmp ( tmp, "ID3", 3) ||
78  ( tmp[5] & 0x0F ) != 0 ||
79  ((tmp[6] | tmp[7] | tmp[8] | tmp[9]) & 0x80) != 0
80  ) {
81  p_file->seek ( p_base, p_abort );
82  p_size_skipped = 0;
83  return;
84  }
85 
86  int FooterPresent = tmp[5] & 0x10;
87 
88  t_uint32 ret;
89  ret = tmp[6] << 21;
90  ret += tmp[7] << 14;
91  ret += tmp[8] << 7;
92  ret += tmp[9] ;
93  ret += 10;
94  if ( FooterPresent ) ret += 10;
95 
96  try {
97  p_file->seek ( p_base + ret, p_abort );
98  } catch(exception_io_seek_out_of_range) {
99  p_file->seek( p_base, p_abort );
100  p_size_skipped = 0;
101  return;
102  }
103 
104  p_size_skipped = ret;
105 
106 }
t_uint32
uint32_t t_uint32
Definition: int_types.h:5
virtual void tag_processor_id3v2::read ( const service_ptr_t< file > &  p_file,
file_info &  p_info,
abort_callback &  p_abort 
)
pure virtual
virtual void tag_processor_id3v2::write ( const service_ptr_t< file > &  p_file,
const file_info &  p_info,
abort_callback &  p_abort 
)
pure virtual
virtual void tag_processor_id3v2::write_ex ( tag_write_callback &  p_callback,
const service_ptr_t< file > &  p_file,
const file_info &  p_info,
abort_callback &  p_abort 
)
pure virtual
The documentation for this class was generated from the following files:
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