read id3v1 tags

diff --git a/src/plugin_winamp2/in_flac.c b/src/plugin_winamp2/in_flac.c
index 2cf42ca..9417d1d 100644 (file)
--- a/src/plugin_winamp2/in_flac.c
+++ b/src/plugin_winamp2/in_flac.c
@@ -20,10 +20,23 @@
 #include <mmreg.h>
 #include <msacm.h>
 #include <math.h>
+#include <stdio.h>
 
 #include "in2.h"
 #include "FLAC/all.h"
 
+typedef struct {
+       FLAC__byte raw[128];
+       char title[31];
+       char artist[31];
+       char album[31];
+       char comment[31];
+       unsigned year;
+       unsigned track; /* may be 0 if v1 (not v1.1) tag */
+       unsigned genre;
+       char description[1024]; /* the formatted description passed to player */
+} id3v1_struct;
+
 BOOL WINAPI _DllMainCRTStartup(HANDLE hInst, ULONG ul_reason_for_call, LPVOID lpReserved)
 {
        return TRUE;
@@ -45,6 +58,7 @@ static FLAC__bool stream_init(const char *infilename);
 static FLAC__StreamDecoderWriteStatus write_callback(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data);
 static void metadata_callback(const FLAC__FileDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data);
 static void error_callback(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
+static FLAC__bool get_id3v1_tag_(const char *filename, id3v1_struct *tag);
 
 In_Module mod; /* the output module (declared near the bottom of this file) */
 char lastfn[MAX_PATH]; /* currently playing file (used for getting info on the current file) */
@@ -196,42 +210,42 @@ int infoDlg(char *fn, HWND hwnd)
 
 void getfileinfo(char *filename, char *title, int *length_in_ms)
 {
+       id3v1_struct tag;
+
        if (!filename || !*filename) { /* currently playing file */
-               if (length_in_ms)
-                       *length_in_ms = getlength();
-               if (title) {
-                       char *p = lastfn+strlen(lastfn);
-                       while (*p != '\\' && p >= lastfn) p--;
-                       strcpy(title, ++p);
-               }
-       }
-       else { /* some other file */
                if (length_in_ms) {
-                       FLAC__FileDecoder *tmp_decoder = FLAC__file_decoder_new();
-                       stream_info_struct tmp_stream_info;
-                       tmp_stream_info.abort_flag = false;
-                       FLAC__file_decoder_set_md5_checking(tmp_decoder, false);
-                       FLAC__file_decoder_set_filename(tmp_decoder, filename);
-                       FLAC__file_decoder_set_write_callback(tmp_decoder, write_callback);
-                       FLAC__file_decoder_set_metadata_callback(tmp_decoder, metadata_callback);
-                       FLAC__file_decoder_set_error_callback(tmp_decoder, error_callback);
-                       FLAC__file_decoder_set_client_data(tmp_decoder, &tmp_stream_info);
-                       if(FLAC__file_decoder_init(tmp_decoder) != FLAC__FILE_DECODER_OK)
-                               return;
-                       if(!FLAC__file_decoder_process_metadata(tmp_decoder))
-                               return;
-
-                       *length_in_ms = (int)tmp_stream_info.length_in_ms;
-
-                       FLAC__file_decoder_finish(tmp_decoder);
-                       FLAC__file_decoder_delete(tmp_decoder);
+                       *length_in_ms = getlength();
+                       length_in_ms = 0; /* force skip in following code */
                }
-               if (title) {
-                       char *p = filename+strlen(filename);
-                       while (*p != '\\' && p >= filename) p--;
-                       strcpy(title, ++p);
+               if (title && lastfn && lastfn[0]) {
+                       filename = lastfn;
                }
        }
+
+       if (length_in_ms) {
+               FLAC__FileDecoder *tmp_decoder = FLAC__file_decoder_new();
+               stream_info_struct tmp_stream_info;
+               tmp_stream_info.abort_flag = false;
+               FLAC__file_decoder_set_md5_checking(tmp_decoder, false);
+               FLAC__file_decoder_set_filename(tmp_decoder, filename);
+               FLAC__file_decoder_set_write_callback(tmp_decoder, write_callback);
+               FLAC__file_decoder_set_metadata_callback(tmp_decoder, metadata_callback);
+               FLAC__file_decoder_set_error_callback(tmp_decoder, error_callback);
+               FLAC__file_decoder_set_client_data(tmp_decoder, &tmp_stream_info);
+               if(FLAC__file_decoder_init(tmp_decoder) != FLAC__FILE_DECODER_OK)
+                       return;
+               if(!FLAC__file_decoder_process_metadata(tmp_decoder))
+                       return;
+
+               *length_in_ms = (int)tmp_stream_info.length_in_ms;
+
+               FLAC__file_decoder_finish(tmp_decoder);
+               FLAC__file_decoder_delete(tmp_decoder);
+       }
+       if (title) {
+               (void)get_id3v1_tag_(filename, &tag);
+               strcpy(title, tag.description);
+       }
 }
 
 void eq_set(int on, char data[10], int preamp)
@@ -426,3 +440,49 @@ void error_callback(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorSt
        if(status != FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC)
                stream_info->abort_flag = true;
 }
+
+FLAC__bool get_id3v1_tag_(const char *filename, id3v1_struct *tag)
+{
+       const char *temp;
+       FILE *f = fopen(filename, "rb");
+       memset(tag, 0, sizeof(id3v1_struct));
+
+       /* set the title and description to the filename by default */
+       temp = strrchr(filename, '/');
+       if(!temp)
+               temp = filename;
+       else
+               temp++;
+       strcpy(tag->description, temp);
+       *strrchr(tag->description, '.') = '\0';
+       strncpy(tag->title, tag->description, 30); tag->title[30] = '\0';
+
+       if(0 == f)
+               return false;
+       if(-1 == fseek(f, -128, SEEK_END)) {
+               fclose(f);
+               return false;
+       }
+       if(fread(tag->raw, 1, 128, f) < 128) {
+               fclose(f);
+               return false;
+       }
+       fclose(f);
+       if(strncmp(tag->raw, "TAG", 3))
+               return false;
+       else {
+               char year_str[5];
+
+               memcpy(tag->title, tag->raw+3, 30);
+               memcpy(tag->artist, tag->raw+33, 30);
+               memcpy(tag->album, tag->raw+63, 30);
+               memcpy(year_str, tag->raw+93, 4); year_str[4] = '\0'; tag->year = atoi(year_str);
+               memcpy(tag->comment, tag->raw+97, 30);
+               tag->genre = (unsigned)((FLAC__byte)tag->raw[127]);
+               tag->track = (unsigned)((FLAC__byte)tag->raw[126]);
+
+               sprintf(tag->description, "%s - %s", tag->artist[0]? tag->artist : "Unknown Artist", tag->title[0]? tag->title : "Untitled");
+
+               return true;
+       }
+}