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Jef 2024-09-24 14:54:57 +02:00
parent 537bcbc862
commit fc06254474
16440 changed files with 4239995 additions and 2 deletions
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167
Src/replicant/nsid3v2/frame_id.cpp Normal file
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#include "nsid3v2.h"
#include "nsid3v2/header.h"
#include "nsid3v2/tag.h"
#include "nsid3v2/frame_utils.h"
#include "nu/ByteReader.h"
#include "nu/ByteWriter.h"
#include "nx/nxstring.h"
struct ParsedID
{
ParsedString owner;
const void *identifier_data;
size_t identifier_byte_length;
};
static int ParseID(const void *data, size_t data_len, ParsedID &parsed)
{
int ret;
if (data_len < 1)
return NErr_Insufficient;
bytereader_value_t byte_reader;
bytereader_init(&byte_reader, data, data_len);
/* owner is always latin-1 */
ret = ParseNullTerminatedString(&byte_reader, 0, parsed.owner);
if (ret != NErr_Success)
return ret;
parsed.identifier_data = bytereader_pointer(&byte_reader);
parsed.identifier_byte_length = bytereader_size(&byte_reader);
return NErr_Success;
}
int NSID3v2_Tag_ID_Find(const nsid3v2_tag_t t, const char *owner, nsid3v2_frame_t *out_frame, int text_flags)
{
const ID3v2::Tag *tag = (const ID3v2::Tag *)t;
if (!tag)
return NErr_Empty;
const ID3v2::Frame *frame = tag->FindFirstFrame(NSID3V2_FRAME_ID);
while (frame)
{
const void *data;
size_t data_len;
ParsedID parsed;
if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseID(data, data_len, parsed) == NErr_Success && (!owner || DescriptionMatches(parsed.owner, owner, text_flags)))
{
*out_frame = (nsid3v2_frame_t)frame;
return NErr_Success;
}
frame = tag->FindNextFrame(frame);
}
return NErr_Empty;
}
int NSID3v2_Frame_ID_Get(nsid3v2_frame_t f, nx_string_t *owner, const void **id_data, size_t *length, int text_flags)
{
const ID3v2::Frame *frame = (const ID3v2::Frame *)f;
if (frame)
{
const void *data;
size_t data_len;
ParsedID parsed;
if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseID(data, data_len, parsed) == NErr_Success)
{
if (owner)
{
int ret = NXStringCreateFromParsedString(owner, parsed.owner, text_flags);
if (ret != NErr_Success)
return ret;
}
*id_data = parsed.identifier_data;
*length = parsed.identifier_byte_length;
return NErr_Success;
}
}
return NErr_Empty;
}
int NSID3v2_Tag_ID_Get(const nsid3v2_tag_t t, const char *owner, const void **id_data, size_t *length, int text_flags)
{
const ID3v2::Tag *tag = (const ID3v2::Tag *)t;
if (!tag)
return NErr_Empty;
ID3v2::Frame *frame = tag->FindFirstFrame(NSID3V2_FRAME_ID);
while (frame)
{
const void *data;
size_t data_len;
ParsedID parsed;
if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseID(data, data_len, parsed) == NErr_Success && (!owner || DescriptionMatches(parsed.owner, owner, text_flags)))
{
*id_data = parsed.identifier_data;
*length = parsed.identifier_byte_length;
return NErr_Success;
}
frame = tag->FindNextFrame(frame);
}
return NErr_Empty;
}
/* ---------------- Setters ---------------- */
int NSID3v2_Frame_ID_Set(nsid3v2_frame_t f, const char *owner, const void *id_data, size_t length, int text_flags)
{
ID3v2::Frame *frame = (ID3v2::Frame *)f;
if (frame)
{
size_t owner_length=owner?strlen(owner):0;
/* TODO: overflow check */
size_t total_size = owner_length + 1 + length;
void *data;
size_t data_len;
int ret = frame->NewData(total_size, &data, &data_len);
if (ret != NErr_Success)
return ret;
bytewriter_s byte_writer;
bytewriter_init(&byte_writer, data, data_len);
bytewriter_write_n(&byte_writer, owner, owner_length);
bytewriter_write_u8(&byte_writer, 0); // write null terminator separately, in case owner is NULL
bytewriter_write_n(&byte_writer, id_data, length);
return NErr_Success;
}
return NErr_Empty;
}
int NSID3v2_Tag_ID_Set(nsid3v2_tag_t t, const char *owner, const void *id_data, size_t length, int text_flags)
{
ID3v2::Tag *tag = (ID3v2::Tag *)t;
if (!tag)
return NErr_Empty;
ID3v2::Frame *frame = tag->FindFirstFrame(NSID3V2_FRAME_ID);
while (frame)
{
const void *data;
size_t data_len;
ParsedID parsed;
if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseID(data, data_len, parsed) == NErr_Success && (!owner || DescriptionMatches(parsed.owner, owner, text_flags)))
{
break;
}
frame = tag->FindNextFrame(frame);
}
if (!frame)
{
frame = tag->NewFrame(NSID3V2_FRAME_ID, 0);
if (!frame)
return NErr_OutOfMemory;
tag->AddFrame(frame);
}
return NSID3v2_Frame_ID_Set((nsid3v2_frame_t)frame, owner, id_data, length, text_flags);
}