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Diffstat (limited to 'Src/replicant/nsid3v2/windows/frame_comments.cpp')
-rw-r--r--Src/replicant/nsid3v2/windows/frame_comments.cpp228
1 files changed, 228 insertions, 0 deletions
diff --git a/Src/replicant/nsid3v2/windows/frame_comments.cpp b/Src/replicant/nsid3v2/windows/frame_comments.cpp
new file mode 100644
index 00000000..4e1beb5f
--- /dev/null
+++ b/Src/replicant/nsid3v2/windows/frame_comments.cpp
@@ -0,0 +1,228 @@
+#include "nsid3v2/nsid3v2.h"
+#include "nsid3v2/header.h"
+#include "nsid3v2/tag.h"
+#include "nsid3v2/frame_utils.h"
+#include "nu/AutoWide.h"
+#include <strsafe.h>
+
+struct ParsedComments
+{
+ const char *language;
+ uint8_t description_encoding; // 0 - iso-8859-1, 1 - UTF16LE, 2 - UTF16BE, 3 - UTF8
+ union
+ {
+ const char *as8;
+ const wchar_t *as16;
+ } description_data;
+ size_t description_cch;
+ uint8_t value_encoding; // 0 - iso-8859-1, 1 - UTF16LE, 2 - UTF16BE, 3 - UTF8
+ union
+ {
+ const char *as8;
+ const wchar_t *as16;
+ } value_data;
+ size_t value_cch;
+};
+
+static int ParseComments(const void *data, size_t data_len, ParsedComments &parsed)
+{
+ int ret;
+ if (data_len < 5)
+ return NErr_Error;
+
+ const uint8_t *data8 = (const uint8_t *)data;
+ switch(data8[0])
+ {
+ case 0: // ISO-8859-1
+ parsed.description_encoding = 0;
+ parsed.language = (const char *)&data8[1];
+
+ parsed.value_encoding = 0;
+ parsed.description_data.as8 = (const char *)&data8[4];
+ data_len-=4;
+
+ ret = ParseDescription(parsed.description_data.as8, data_len, parsed.description_cch);
+ if (ret != NErr_Success)
+ return ret;
+
+ parsed.value_data.as8 = parsed.description_data.as8 + 2 + parsed.description_cch;
+ parsed.value_cch = data_len;
+
+ return NErr_Success;
+ case 1: // UTF-16
+ parsed.language = (const char *)&data8[1];
+ parsed.description_encoding=1;
+ parsed.description_data.as16 = (const wchar_t *)&data8[4];
+ data_len-=4;
+
+ ret = ParseDescription(parsed.description_data.as16, data_len, parsed.description_cch, parsed.description_encoding);
+ if (ret != NErr_Success)
+ return ret;
+
+ parsed.value_data.as16 = parsed.description_data.as16 + 2 + parsed.description_cch;
+ parsed.value_cch = data_len/2;
+
+ if (parsed.value_cch && parsed.value_data.as16[0] == 0xFFFE)
+ {
+ parsed.value_encoding=2;
+ parsed.value_data.as16++;
+ parsed.value_cch--;
+ }
+ else if (parsed.value_cch && parsed.value_data.as16[0] == 0xFEFF)
+ {
+ parsed.value_encoding=1;
+ parsed.value_data.as16++;
+ parsed.value_cch--;
+ }
+ else
+ {
+ parsed.value_encoding=1;
+ }
+
+ return NErr_Success;
+
+ case 2: // UTF-16 BE
+ parsed.language = (const char *)&data8[1];
+ parsed.description_encoding=2;
+ parsed.description_data.as16 = (const wchar_t *)&data8[4];
+ data_len-=3;
+
+ ret = ParseDescription(parsed.description_data.as16, data_len, parsed.description_cch, parsed.description_encoding);
+ if (ret != NErr_Success)
+ return ret;
+
+ parsed.value_data.as16 = parsed.description_data.as16 + 2 + parsed.description_cch;
+ parsed.value_cch = data_len/2;
+ parsed.value_encoding=2;
+
+ return NErr_Success;
+ case 3: // UTF-8
+ parsed.description_encoding = 3;
+ parsed.language = (const char *)&data8[1];
+ parsed.value_encoding = 3;
+ parsed.description_data.as8 = (const char *)&data8[4];
+ data_len-=4;
+
+ ret = ParseDescription(parsed.description_data.as8, data_len, parsed.description_cch);
+ if (ret != NErr_Success)
+ return ret;
+
+ // check for UTF-8 BOM
+ if (parsed.description_cch >= 3 && parsed.description_data.as8[0] == 0xEF && parsed.description_data.as8[1] == 0xBB && parsed.description_data.as8[2] == 0xBF)
+ {
+ parsed.description_data.as8+=3;
+ parsed.description_cch-=3;
+ }
+
+ if (!data_len)
+ return NErr_Error;
+
+ parsed.value_data.as8 = parsed.description_data.as8 + 2 + parsed.description_cch;
+ parsed.value_cch = data_len;
+
+ // check for UTF-8 BOM
+ if (parsed.value_cch >= 3 && parsed.value_data.as8[0] == 0xEF && parsed.value_data.as8[1] == 0xBB && parsed.value_data.as8[2] == 0xBF)
+ {
+ parsed.value_data.as8+=3;
+ parsed.value_cch-=3;
+ }
+
+ return NErr_Success;
+ }
+ return NErr_NotImplemented;
+}
+
+
+int NSID3v2_Tag_Comments_GetUTF16(const nsid3v2_tag_t t, const wchar_t *description, wchar_t *buf, size_t buf_cch, int text_flags)
+{
+ const ID3v2::Tag *tag = (const ID3v2::Tag *)t;
+ const ID3v2::Frame *frame = tag->FindFirstFrame(NSID3V2_FRAME_COMMENTS);
+ while (frame)
+ {
+ const void *data;
+ size_t data_len;
+ ParsedComments parsed;
+ if (frame->GetData(&data, &data_len) == NErr_Success && data_len > 0 && ParseComments(data, data_len, parsed) == NErr_Success)
+ {
+ // see if our description matches
+ switch(parsed.description_encoding)
+ {
+ case 0: // ISO-8859-1
+ {
+ UINT codepage = (text_flags & NSID3V2_TEXT_SYSTEM)?28591:CP_ACP;
+ if (CompareStringW(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), NORM_IGNORECASE, AutoWide(parsed.description_data.as8, codepage), -1, description, -1) != CSTR_EQUAL)
+ goto next_frame;
+ }
+ break;
+ case 1:
+ if (CompareStringW(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), NORM_IGNORECASE, parsed.description_data.as16, -1, description, -1) != CSTR_EQUAL)
+ goto next_frame;
+ break;
+ case 2:
+ // TODO!
+ goto next_frame;
+ break;
+ case 3:
+ if (CompareStringW(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), NORM_IGNORECASE, AutoWide(parsed.description_data.as8, CP_UTF8), -1, description, -1) != CSTR_EQUAL)
+ goto next_frame;
+ break;
+ }
+
+ switch(parsed.value_encoding)
+ {
+ case 0: // ISO-8859-1
+ {
+ UINT codepage = (text_flags & NSID3V2_TEXT_SYSTEM)?28591:CP_ACP;
+ int utf16_len = MultiByteToWideChar(codepage, 0, parsed.value_data.as8, parsed.value_cch, 0, 0);
+
+ if (utf16_len)
+ {
+ utf16_len = MultiByteToWideChar(codepage, 0, parsed.value_data.as8, parsed.value_cch, buf, utf16_len-1);
+ buf[utf16_len]=0;
+ }
+ else
+ {
+ buf[0]=0;
+ }
+ }
+ return NErr_Success;
+ case 1: // UTF-16
+ StringCchCopyNW(buf, buf_cch, parsed.value_data.as16, parsed.value_cch);
+ return NErr_Success;
+ case 2: // UTF-16BE
+ {
+ size_t toCopy = buf_cch-1;
+ if (parsed.value_cch < toCopy)
+ toCopy = parsed.value_cch;
+ for (size_t i=0;i<toCopy;i++)
+ {
+ buf[i] = ((parsed.value_data.as16[i] >> 8) & 0xFF) | (((parsed.value_data.as16[i]) & 0xFF) << 8);
+ }
+ buf[toCopy]=0;
+ }
+ return NErr_Success;
+ case 3: // UTF-8
+ {
+ int utf16_len = MultiByteToWideChar(CP_UTF8, 0, parsed.value_data.as8, parsed.value_cch, 0, 0);
+
+ if (utf16_len)
+ {
+ utf16_len = MultiByteToWideChar(CP_UTF8, 0, parsed.value_data.as8, parsed.value_cch, buf, utf16_len-1);
+ buf[utf16_len]=0;
+ }
+ else
+ {
+ buf[0]=0;
+ }
+ }
+ return NErr_Success;
+ }
+
+next_frame:
+ frame = tag->FindNextFrame(frame);
+ }
+ }
+
+ return NErr_Error;
+}
+
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