87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
|
#include "nsid3v2.h"
|
||
|
|
#include "nsid3v2/header.h"
|
||
|
|
#include "nsid3v2/tag.h"
|
||
|
|
#include "nsid3v2/frame_utils.h"
|
||
|
|
#include "nu/ByteReader.h"
|
||
|
|
#include "nx/nxstring.h"
|
||
|
|
#if defined(_WIN32) && !defined(strcasecmp)
|
||
|
|
#define strcasecmp _stricmp
|
||
|
|
#else
|
||
|
|
#include <strings.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct ParsedObject
|
||
|
|
{
|
||
|
|
ParsedString mime;
|
||
|
|
ParsedString filename;
|
||
|
|
ParsedString description;
|
||
|
|
const void *object_data;
|
||
|
|
size_t object_byte_length;
|
||
|
|
};
|
||
|
|
|
||
|
|
static int ParseObject(const void *data, size_t data_len, ParsedObject &parsed)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
if (data_len == 0)
|
||
|
|
return NErr_Insufficient;
|
||
|
|
|
||
|
|
bytereader_value_t byte_reader;
|
||
|
|
bytereader_init(&byte_reader, data, data_len);
|
||
|
|
|
||
|
|
/* encoding */
|
||
|
|
uint8_t encoding = bytereader_read_u8(&byte_reader);
|
||
|
|
|
||
|
|
/* read mime type (Always latin-1) */
|
||
|
|
ret = ParseNullTerminatedString(&byte_reader, 0, parsed.mime);
|
||
|
|
if (ret != NErr_Success)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
/* read filename */
|
||
|
|
ret = ParseNullTerminatedString(&byte_reader, encoding, parsed.filename);
|
||
|
|
if (ret != NErr_Success)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
/* read content description */
|
||
|
|
ret = ParseNullTerminatedString(&byte_reader, encoding, parsed.description);
|
||
|
|
if (ret != NErr_Success)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
|
||
|
|
parsed.object_data = bytereader_pointer(&byte_reader);
|
||
|
|
parsed.object_byte_length = bytereader_size(&byte_reader);
|
||
|
|
|
||
|
|
return NErr_Success;
|
||
|
|
}
|
||
|
|
|
||
|
|
int NSID3v2_Frame_Object_Get(const nsid3v2_frame_t f, nx_string_t *mime, nx_string_t *filename, nx_string_t *description, const void **out_data, size_t *length, int text_flags)
|
||
|
|
{
|
||
|
|
const ID3v2::Frame *frame = (const ID3v2::Frame *)f;
|
||
|
|
if (frame)
|
||
|
|
{
|
||
|
|
const void *data;
|
||
|
|
size_t data_len;
|
||
|
|
ParsedObject parsed;
|
||
|
|
if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseObject(data, data_len, parsed) == NErr_Success)
|
||
|
|
{
|
||
|
|
int ret = NXStringCreateFromParsedString(mime, parsed.mime, text_flags);
|
||
|
|
if (ret != NErr_Success)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = NXStringCreateFromParsedString(filename, parsed.filename, text_flags);
|
||
|
|
if (ret != NErr_Success)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = NXStringCreateFromParsedString(description, parsed.description, text_flags);
|
||
|
|
if (ret != NErr_Success)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
*out_data = parsed.object_data;
|
||
|
|
*length = parsed.object_byte_length;
|
||
|
|
|
||
|
|
return NErr_Success;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
return NErr_Empty;
|
||
|
|
}
|