X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fsound%2Fsound.c;h=69c1be0397b7ea2527f44d0f92487cbb30469016;hb=274fcc35aa20e9777a8e09630a94088757384329;hp=7f3fd8dfb58e35c2d886ec838735a301a94f2eb9;hpb=2ec9bec58b89831cdead4cdec8f593c5b99d2715;p=picodrive.git

diff --git a/pico/sound/sound.c b/pico/sound/sound.c
index 7f3fd8d..69c1be0 100644
--- a/pico/sound/sound.c
+++ b/pico/sound/sound.c
@@ -1,19 +1,21 @@
-// This is part of Pico Library
-
-// (c) Copyright 2004 Dave, All rights reserved.
-// (c) Copyright 2006,2007 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
+/*
+ * PicoDrive
+ * (c) Copyright Dave, 2004
+ * (C) notaz, 2006-2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include <string.h>
 #include "ym2612.h"
 #include "sn76496.h"
 #include "../pico_int.h"
-#include "../cd/pcm.h"
+#include "../cd/cue.h"
 #include "mix.h"
 
+#define SIMPLE_WRITE_SOUND 0
+
 void (*PsndMix_32_to_16l)(short *dest, int *src, int count) = mix_32_to_16l_stereo;
 
 // master int buffer to mix to
@@ -107,14 +109,9 @@ static void dac_recalculate(void)
 
 PICO_INTERNAL void PsndReset(void)
 {
-  void *ym2612_regs;
-
-  // also clear the internal registers+addr line
-  ym2612_regs = YM2612GetRegs();
-  memset(ym2612_regs, 0, 0x200+4);
-  timers_reset();
-
+  // PsndRerate calls YM2612Init, which also resets
   PsndRerate(0);
+  timers_reset();
 }
 
 
@@ -124,15 +121,6 @@ void PsndRerate(int preserve_state)
   void *state = NULL;
   int target_fps = Pico.m.pal ? 50 : 60;
 
-  // not all rates are supported in MCD mode due to mp3 decoder limitations
-  if (PicoAHW & PAHW_MCD) {
-    if (!(11025-100 <= PsndRate && PsndRate <= 11025+100) &&
-        !(22050-100 <= PsndRate && PsndRate <= 22050+100) &&
-        !(44100-100 <= PsndRate && PsndRate <= 44100+100))
-      PsndRate = 22050;
-    PicoOpt |= POPT_EN_STEREO; // force stereo
-  }
-
   if (preserve_state) {
     state = malloc(0x204);
     if (state == NULL) return;
@@ -144,8 +132,6 @@ void PsndRerate(int preserve_state)
     // feed it back it's own registers, just like after loading state
     memcpy(YM2612GetRegs(), state, 0x204);
     ym2612_unpack_state();
-    if ((PicoAHW & PAHW_MCD) && !(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
-      cdda_start_play();
   }
 
   if (preserve_state) memcpy(state, sn76496_regs, 28*4); // remember old state
@@ -163,9 +149,6 @@ void PsndRerate(int preserve_state)
   // recalculate dac info
   dac_recalculate();
 
-  if (PicoAHW & PAHW_MCD)
-    pcm_set_rate(PsndRate);
-
   // clear all buffers
   memset32(PsndBuffer, 0, sizeof(PsndBuffer)/4);
   memset(cdda_out_buffer, 0, sizeof(cdda_out_buffer));
@@ -186,6 +169,9 @@ PICO_INTERNAL void PsndDoDAC(int line_to)
   int dout = ym2612.dacout;
   int line_from = PsndDacLine;
 
+  if (line_to >= 312)
+    line_to = 311;
+
   PsndDacLine = line_to + 1;
 
   pos =dac_info[line_from]>>4;
@@ -200,34 +186,22 @@ PICO_INTERNAL void PsndDoDAC(int line_to)
     short *d = PsndOut + pos;
     for (; len > 0; len--, d++)  *d = dout;
   }
-
-#if 0
-  if (do_pcm) {
-    int *d = PsndBuffer;
-    d += (PicoOpt&8) ? pos*2 : pos;
-    pcm_update(d, len, 1);
-  }
-#endif
 }
 
 // cdda
-static pm_file *cdda_stream = NULL;
-
 static void cdda_raw_update(int *buffer, int length)
 {
   int ret, cdda_bytes, mult = 1;
-  if (cdda_stream == NULL)
-    return;
 
   cdda_bytes = length*4;
   if (PsndRate <= 22050 + 100) mult = 2;
   if (PsndRate <  22050 - 100) mult = 4;
   cdda_bytes *= mult;
 
-  ret = pm_read(cdda_out_buffer, cdda_bytes, cdda_stream);
+  ret = pm_read(cdda_out_buffer, cdda_bytes, Pico_mcd->cdda_stream);
   if (ret < cdda_bytes) {
     memset((char *)cdda_out_buffer + ret, 0, cdda_bytes - ret);
-    cdda_stream = NULL;
+    Pico_mcd->cdda_stream = NULL;
     return;
   }
 
@@ -239,51 +213,24 @@ static void cdda_raw_update(int *buffer, int length)
   }
 }
 
-PICO_INTERNAL void cdda_start_play(void)
+void cdda_start_play(int lba_base, int lba_offset, int lb_len)
 {
-  int lba_offset, index, lba_length, i;
-
-  elprintf(EL_STATUS, "cdda play track #%i", Pico_mcd->scd.Cur_Track);
-
-  index = Pico_mcd->scd.Cur_Track - 1;
-
-  lba_offset = Pico_mcd->scd.Cur_LBA - Track_to_LBA(index + 1);
-  if (lba_offset < 0) lba_offset = 0;
-  lba_offset += Pico_mcd->TOC.Tracks[index].Offset;
-
-  // find the actual file for this track
-  for (i = index; i >= 0; i--)
-    if (Pico_mcd->TOC.Tracks[i].F != NULL) break;
-
-  if (Pico_mcd->TOC.Tracks[i].F == NULL) {
-    elprintf(EL_STATUS|EL_ANOMALY, "no track?!");
-    return;
-  }
-
-  if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_MP3)
+  if (Pico_mcd->cdda_type == CT_MP3)
   {
     int pos1024 = 0;
 
-    lba_length = Pico_mcd->TOC.Tracks[i].Length;
-    for (i++; i < Pico_mcd->TOC.Last_Track; i++) {
-      if (Pico_mcd->TOC.Tracks[i].F != NULL) break;
-      lba_length += Pico_mcd->TOC.Tracks[i].Length;
-    }
-
     if (lba_offset)
-      pos1024 = lba_offset * 1024 / lba_length;
+      pos1024 = lba_offset * 1024 / lb_len;
 
-    mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024);
+    mp3_start_play(Pico_mcd->cdda_stream, pos1024);
     return;
   }
 
-  cdda_stream = Pico_mcd->TOC.Tracks[i].F;
-  PicoCDBufferFlush(); // buffering relies on fp not being touched
-  pm_seek(cdda_stream, lba_offset * 2352, SEEK_SET);
-  if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_WAV)
+  pm_seek(Pico_mcd->cdda_stream, (lba_base + lba_offset) * 2352, SEEK_SET);
+  if (Pico_mcd->cdda_type == CT_WAV)
   {
     // skip headers, assume it's 44kHz stereo uncompressed
-    pm_seek(cdda_stream, 44, SEEK_CUR);
+    pm_seek(Pico_mcd->cdda_stream, 44, SEEK_CUR);
   }
 }
 
@@ -296,7 +243,7 @@ PICO_INTERNAL void PsndClear(void)
     memset32((int *) PsndOut, 0, len); // assume PsndOut to be aligned
   else {
     short *out = PsndOut;
-    if ((int)out & 2) { *out++ = 0; len--; }
+    if ((long)out & 2) { *out++ = 0; len--; }
     memset32((int *) out, 0, len/2);
     if (len & 1) out[len-1] = 0;
   }
@@ -308,11 +255,11 @@ static int PsndRender(int offset, int length)
   int  buf32_updated = 0;
   int *buf32 = PsndBuffer+offset;
   int stereo = (PicoOpt & 8) >> 3;
-  // emulating CD && PCM option enabled && PCM chip on && have enabled channels
-  int do_pcm = (PicoAHW & PAHW_MCD) && (PicoOpt&POPT_EN_MCD_PCM) &&
-		(Pico_mcd->pcm.control & 0x80) && Pico_mcd->pcm.enabled;
+
   offset <<= stereo;
 
+  pprof_start(sound);
+
 #if !SIMPLE_WRITE_SOUND
   if (offset == 0) { // should happen once per frame
     // compensate for float part of PsndLen
@@ -340,30 +287,35 @@ static int PsndRender(int offset, int length)
     memset32(buf32, 0, length<<stereo);
 
 //printf("active_chs: %02x\n", buf32_updated);
+  (void)buf32_updated;
 
   // CD: PCM sound
-  if (do_pcm) {
-    pcm_update(buf32, length, stereo);
+  if (PicoAHW & PAHW_MCD) {
+    pcd_pcm_update(buf32, length, stereo);
     //buf32_updated = 1;
   }
 
   // CD: CDDA audio
   // CD mode, cdda enabled, not data track, CDC is reading
-  if ((PicoAHW & PAHW_MCD) && (PicoOpt & POPT_EN_MCD_CDDA) &&
-		!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
+  if ((PicoAHW & PAHW_MCD) && (PicoOpt & POPT_EN_MCD_CDDA)
+      && Pico_mcd->cdda_stream != NULL
+      && !(Pico_mcd->s68k_regs[0x36] & 1))
   {
     // note: only 44, 22 and 11 kHz supported, with forced stereo
-    int index = Pico_mcd->scd.Cur_Track - 1;
-
-    if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3)
+    if (Pico_mcd->cdda_type == CT_MP3)
       mp3_update(buf32, length, stereo);
     else
       cdda_raw_update(buf32, length);
   }
 
+  if ((PicoAHW & PAHW_32X) && (PicoOpt & POPT_EN_PWM))
+    p32x_pwm_update(buf32, length, stereo);
+
   // convert + limit to normal 16bit output
   PsndMix_32_to_16l(PsndOut+offset, buf32, length);
 
+  pprof_end(sound);
+
   return length;
 }
 
@@ -373,7 +325,8 @@ PICO_INTERNAL void PsndGetSamples(int y)
 #if SIMPLE_WRITE_SOUND
   if (y != 224) return;
   PsndRender(0, PsndLen);
-  if (PicoWriteSound) PicoWriteSound(PsndLen);
+  if (PicoWriteSound)
+    PicoWriteSound(PsndLen * ((PicoOpt & POPT_EN_STEREO) ? 4 : 2));
   PsndClear();
 #else
   static int curr_pos = 0;
@@ -383,8 +336,11 @@ PICO_INTERNAL void PsndGetSamples(int y)
     if (emustatus & 2)
          curr_pos += PsndRender(curr_pos, PsndLen-PsndLen/2);
     else curr_pos  = PsndRender(0, PsndLen);
-    if (emustatus&1) emustatus|=2; else emustatus&=~2;
-    if (PicoWriteSound) PicoWriteSound(curr_pos);
+    if (emustatus & 1)
+         emustatus |=  2;
+    else emustatus &= ~2;
+    if (PicoWriteSound)
+      PicoWriteSound(curr_pos * ((PicoOpt & POPT_EN_STEREO) ? 4 : 2));
     // clear sound buffer
     PsndClear();
   }
@@ -398,7 +354,6 @@ PICO_INTERNAL void PsndGetSamples(int y)
 
 PICO_INTERNAL void PsndGetSamplesMS(void)
 {
-  int *buf32 = PsndBuffer;
   int stereo = (PicoOpt & 8) >> 3;
   int length = PsndLen;
 
@@ -415,11 +370,15 @@ PICO_INTERNAL void PsndGetSamplesMS(void)
   if (PicoOpt & POPT_EN_PSG)
     SN76496Update(PsndOut, length, stereo);
 
-  // convert + limit to normal 16bit output
-  PsndMix_32_to_16l(PsndOut, buf32, length);
+  // upmix to "stereo" if needed
+  if (stereo) {
+    int i, *p;
+    for (i = length, p = (void *)PsndOut; i > 0; i--, p++)
+      *p |= *p << 16;
+  }
 
   if (PicoWriteSound != NULL)
-    PicoWriteSound(length);
+    PicoWriteSound(length * ((PicoOpt & POPT_EN_STEREO) ? 4 : 2));
   PsndClear();
 }