+ int mp3_offs = shared_ctl->mp3_offs;\r
+ unsigned char *readPtr = mp3_data + mp3_offs;\r
+ int bytesLeft = shared_ctl->mp3_len - mp3_offs;\r
+ int offset; // frame offset from readPtr\r
+ int err;\r
+\r
+ if (bytesLeft <= 0) return; // EOF, nothing to do\r
+\r
+ offset = MP3FindSyncWord(readPtr, bytesLeft);\r
+ if (offset < 0) {\r
+ set_if_not_changed(&shared_ctl->mp3_offs, mp3_offs, shared_ctl->mp3_len);\r
+ return; // EOF\r
+ }\r
+ readPtr += offset;\r
+ bytesLeft -= offset;\r
+\r
+ err = MP3Decode(shared_data->mp3dec, &readPtr, &bytesLeft,\r
+ shared_data->mp3_buffer[shared_ctl->mp3_buffsel], 0);\r
+ if (err) {\r
+ if (err == ERR_MP3_INDATA_UNDERFLOW) {\r
+ set_if_not_changed(&shared_ctl->mp3_offs, mp3_offs, shared_ctl->mp3_len);\r
+ return;\r
+ } else if (err <= -6 && err >= -12) {\r
+ // ERR_MP3_INVALID_FRAMEHEADER, ERR_MP3_INVALID_*\r
+ // just try to skip the offending frame..\r
+ readPtr++;\r
+ }\r
+ shared_ctl->mp3_errors++;\r
+ shared_ctl->mp3_lasterr = err;\r
+ }\r
+ set_if_not_changed(&shared_ctl->mp3_offs, mp3_offs, readPtr - mp3_data);\r
+}\r
+\r
+static void ym_update(int *ym_buffer)\r
+{\r
+ int i, dw;\r
+ int two_upds = 0;\r
+ UINT16 *wbuff;\r
+\r
+ if (shared_ctl->writebuffsel == 1) {\r
+ wbuff = shared_ctl->writebuff1;\r
+ } else {\r
+ wbuff = shared_ctl->writebuff0;\r
+ }\r
+\r
+ /* playback all writes */\r
+ for (i = 2048/2; i > 0; i--) {\r
+ UINT16 d;\r
+ dw = *(int *)wbuff;\r
+ d = dw;\r
+ wbuff++;\r
+ if (d == 0xffff) break;\r
+ if (d == 0xfffe) { two_upds=1; break; }\r
+ YM2612Write_(d >> 8, d);\r
+ d = (dw>>16);\r
+ wbuff++;\r
+ if (d == 0xffff) break;\r
+ if (d == 0xfffe) { two_upds=1; break; }\r
+ YM2612Write_(d >> 8, d);\r
+ }\r
+\r
+ if (two_upds) {\r
+ int len1 = shared_ctl->length / 2;\r
+ shared_ctl->ym_active_chs =\r
+ YM2612UpdateOne_(ym_buffer, len1, shared_ctl->stereo, 1);\r
+\r
+ for (i *= 2; i > 0; i--) {\r
+ UINT16 d = *wbuff++;\r
+ if (d == 0xffff) break;\r
+ YM2612Write_(d >> 8, d);\r
+ }\r
+\r
+ ym_buffer += shared_ctl->stereo ? len1*2 : len1;\r
+ len1 = shared_ctl->length - len1;\r