shithub: zelda3

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Add MSUVolume (fixes #153)

--- a/audio.c

+++ b/audio.c

@@ -128,9 +128,11 @@

   return rv;

 }

-static const uint8 kVolumeTransitionTarget[3] = { 0, 64, 255};

-static const uint8 kVolumeTransitionStep[3] = { 7, 3, 3};

-static float kVolumeTransitionStepFloat;

+static const uint8 kVolumeTransitionTarget[4] = { 0, 64, 255, 255};

+static const uint8 kVolumeTransitionStep[4] = { 7, 3, 3, 24};

+// These are precomputed in the config parse

+static float kVolumeTransitionStepFloat[4];

+static float kVolumeTransitionTargetFloat[4];

 void ZeldaPlayMsuAudioTrack(uint8 music_ctrl) {

   MsuPlayer *mp = &g_msu_player;

@@ -143,8 +145,8 @@

   if ((music_ctrl & 0xf0) != 0xf0)

     MsuPlayer_Open(mp, music_ctrl, false);

   else if (music_ctrl >= 0xf1 && music_ctrl <= 0xf3) {

-    mp->volume_target = kVolumeTransitionTarget[music_ctrl - 0xf1] * (1.0f / 255);

-    mp->volume_step = kVolumeTransitionStepFloat * kVolumeTransitionStep[music_ctrl - 0xf1];

+    mp->volume_target = kVolumeTransitionTargetFloat[music_ctrl - 0xf1];

+    mp->volume_step = kVolumeTransitionStepFloat[music_ctrl - 0xf1];

   }

   if (mp->state == 0) {

@@ -183,8 +185,8 @@

     memcpy(&resume, msu_resume_info, sizeof(mp->resume_info));

   }

-  mp->volume_target = 1.0f;

-  mp->volume_step = kVolumeTransitionStepFloat * 16;

+  mp->volume_target = kVolumeTransitionTargetFloat[3];

+  mp->volume_step = kVolumeTransitionStepFloat[3];

   mp->state = kMsuState_Idle;

   MsuPlayer_CloseFile(mp);

@@ -192,6 +194,7 @@

     return;

   char fname[256], buf[8];

   snprintf(fname, sizeof(fname), "%s%d.%s", g_config.msu_path ? g_config.msu_path : "", actual_track, mp->enabled & kMsuEnabled_Opuz ? "opuz" : "pcm");

+  printf("Loading MSU %s\n", fname);

   mp->f = fopen(fname, "rb");

   if (mp->f == NULL)

     goto READ_ERROR;

@@ -480,7 +483,8 @@

   MsuPlayer *mp = &g_msu_player;

   if (mp->enabled) {

     mp->volume = 0.0;

-    MsuPlayer_Open(mp, (music_unk1 == 0xf1) ? mp->resume_info.orig_track : music_unk1, true);

+    MsuPlayer_Open(mp, (music_unk1 == 0xf1) ? ((MsuPlayerResumeInfo*)msu_resume_info)->orig_track : 

+                   music_unk1, true);

     // If resuming in the middle of a transition, then override

     // the volume with that of the transition.

@@ -487,9 +491,10 @@

     if (last_music_control >= 0xf1 && last_music_control <= 0xf3) {

       uint8 target = kVolumeTransitionTarget[last_music_control - 0xf1];

       if (target != msu_volume) {

-        mp->volume = msu_volume * (1.0f / 255);

-        mp->volume_target = target * (1.0f / 255);

-        mp->volume_step = kVolumeTransitionStepFloat * kVolumeTransitionStep[last_music_control - 0xf1];

+        float f = kVolumeTransitionTargetFloat[3] * (1.0f / 255);

+        mp->volume = msu_volume * f;

+        mp->volume_target = target * f;

+        mp->volume_step = kVolumeTransitionStepFloat[last_music_control - 0xf1];

       }

     }

@@ -522,7 +527,12 @@

       fprintf(stderr, "Warning: MSU requires: AudioFreq = 44100\n");

   }

-  kVolumeTransitionStepFloat = (60 / 256.0f) / g_config.audio_freq;

+  float volscale = g_config.msuvolume * (1.0f / 255 / 100);

+  float stepscale = g_config.msuvolume * (60.0f / 256 / 100) / g_config.audio_freq;

+  for (size_t i = 0; i != countof(kVolumeTransitionStepFloat); i++) {

+    kVolumeTransitionStepFloat[i] = kVolumeTransitionStep[i] * stepscale;

+    kVolumeTransitionTargetFloat[i] = kVolumeTransitionTarget[i] * volscale;

+  }

 }

 void LoadSongBank(const uint8 *p) {  // 808888

--- a/config.c

+++ b/config.c

@@ -273,6 +273,9 @@

     } else if (StringEqualsNoCase(key, "MSUPath")) {

       g_config.msu_path = value;

       return true;

+    } else if (StringEqualsNoCase(key, "MSUVolume")) {

+      g_config.msuvolume = atoi(value);

+      return true;

     } else if (StringEqualsNoCase(key, "ResumeMSU")) {

       return ParseBool(value, &g_config.resume_msu);

     }

@@ -382,6 +385,8 @@

 }

 void ParseConfigFile(const char *filename) {

+  g_config.msuvolume = 100;  // default msu volume, 100%

+

   if (filename != NULL || !ParseOneConfigFile("zelda3.user.ini", 0)) {

     if (filename == NULL)

       filename = "zelda3.ini";

--- a/config.h

+++ b/config.h

@@ -64,6 +64,7 @@

   uint8 enable_msu;

   bool resume_msu;

   bool disable_frame_delay;

+  uint8 msuvolume;

   uint32 features0;

   const char *link_graphics;

--- a/zelda3.ini

+++ b/zelda3.ini

@@ -80,6 +80,8 @@

 # an overworld area. (Only remembers one area)

 ResumeMSU = 1

+# Change the volume of the MSU playback, a value between 0-100

+MSUVolume = 100%

 [Features]

 # Item switch on L/R. Also allows reordering of items in inventory by pressing Y+direction