+// cdda\r
+static pm_file *cdda_stream = NULL;\r
+\r
+static void cdda_raw_update(int *buffer, int length)\r
+{\r
+ int ret, cdda_bytes;\r
+ if (cdda_stream == NULL) return;\r
+\r
+ cdda_bytes = length*4;\r
+ if (PsndRate <= 22050) cdda_bytes *= 2;\r
+ if (PsndRate < 22050) cdda_bytes *= 2;\r
+\r
+ ret = pm_read(cdda_out_buffer, cdda_bytes, cdda_stream);\r
+ if (ret < cdda_bytes) {\r
+ memset((char *)cdda_out_buffer + ret, 0, cdda_bytes - ret);\r
+ cdda_stream = NULL;\r
+ return;\r
+ }\r
+\r
+ // now mix\r
+ switch (PsndRate) {\r
+ case 44100: mix_16h_to_32(buffer, cdda_out_buffer, length*2); break;\r
+ case 22050: mix_16h_to_32_s1(buffer, cdda_out_buffer, length*2); break;\r
+ case 11025: mix_16h_to_32_s2(buffer, cdda_out_buffer, length*2); break;\r
+ }\r
+}\r
+\r
+PICO_INTERNAL void cdda_start_play(void)\r
+{\r
+ int lba_offset, index, lba_length, i;\r
+\r
+ elprintf(EL_STATUS, "cdda play track #%i", Pico_mcd->scd.Cur_Track);\r
+\r
+ index = Pico_mcd->scd.Cur_Track - 1;\r
+\r
+ lba_offset = Pico_mcd->scd.Cur_LBA - Track_to_LBA(index + 1);\r
+ if (lba_offset < 0) lba_offset = 0;\r
+ lba_offset += Pico_mcd->TOC.Tracks[index].Offset;\r
+\r
+ // find the actual file for this track\r
+ for (i = index; i >= 0; i--)\r
+ if (Pico_mcd->TOC.Tracks[i].F != NULL) break;\r
+\r
+ if (Pico_mcd->TOC.Tracks[i].F == NULL) {\r
+ elprintf(EL_STATUS|EL_ANOMALY, "no track?!");\r
+ return;\r
+ }\r
+\r
+ if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_MP3)\r
+ {\r
+ int pos1024 = 0;\r
+\r
+ lba_length = Pico_mcd->TOC.Tracks[i].Length;\r
+ for (i++; i < Pico_mcd->TOC.Last_Track; i++) {\r
+ if (Pico_mcd->TOC.Tracks[i].F != NULL) break;\r
+ lba_length += Pico_mcd->TOC.Tracks[i].Length;\r
+ }\r
+\r
+ if (lba_offset)\r
+ pos1024 = lba_offset * 1024 / lba_length;\r
+\r
+ mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024);\r
+ return;\r
+ }\r
+\r
+ cdda_stream = Pico_mcd->TOC.Tracks[i].F;\r
+ PicoCDBufferFlush(); // buffering relies on fp not being touched\r
+ pm_seek(cdda_stream, lba_offset * 2352, SEEK_SET);\r
+ if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_WAV)\r
+ {\r
+ // skip headers, assume it's 44kHz stereo uncompressed\r
+ pm_seek(cdda_stream, 44, SEEK_CUR);\r
+ }\r
+}\r
+\r