Implement audsrv_is_adpcm_playing

ee/rpc/audsrv/include/audsrv.h

@@ -248,6 +248,11 @@ int audsrv_load_adpcm(audsrv_adpcm_t *adpcm, void *buffer, int size);
 int audsrv_ch_play_adpcm(int ch, audsrv_adpcm_t *adpcm);
 #define audsrv_play_adpcm(adpcm) audsrv_ch_play_adpcm(-1, adpcm) //For backward-compatibility
 
+/** Check if a sample is currently playing on the given channel
+ * @returns 1 if playing, 0 if not
+ */
+int audsrv_is_adpcm_playing(int ch, audsrv_adpcm_t *adpcm);
+
 /** Remove an adpcm sample uploaded with audsrv_load_adpcm() from the list of loaded sounds
  * @param id    sample identifier, as specified in load()
  *

ee/rpc/audsrv/src/audsrv_rpc.c

@@ -484,6 +484,11 @@ int audsrv_ch_play_adpcm(int ch, audsrv_adpcm_t *adpcm)
 	return call_rpc_2(AUDSRV_PLAY_ADPCM, ch, (u32)adpcm);
 }
 
+int audsrv_is_adpcm_playing(int ch, audsrv_adpcm_t *adpcm)
+{
+	return call_rpc_2(AUDSRV_IS_ADPCM_PLAYING, ch, (u32)adpcm);
+}
+
 int audsrv_free_adpcm(audsrv_adpcm_t *adpcm)
 {
 	/* on iop side, the sample id is like the pointer on ee side */

ee/rpc/audsrv/src/audsrv_rpc.h

@@ -52,6 +52,7 @@
 #define AUDSRV_PLAY_ADPCM           0x0018
 #define AUDSRV_ADPCM_SET_VOLUME     0x0019
 #define AUDSRV_FREE_ADPCM           0x001c
+#define AUDSRV_IS_ADPCM_PLAYING     0x001d
 
 #define AUDSRV_AVAILABLE            0x001a
 #define AUDSRV_QUEUED               0x001b

iop/sound/audsrv/include/audsrv.h

@@ -49,6 +49,7 @@
 #define AUDSRV_PLAY_ADPCM           0x0018
 #define AUDSRV_SET_ADPCM_VOL        0x0019
 #define AUDSRV_FREE_ADPCM           0x001c
+#define AUDSRV_IS_ADPCM_PLAYING     0x001d
 
 #define AUDSRV_AVAILABLE            0x001a
 #define AUDSRV_QUEUED               0x001b
@@ -99,6 +100,7 @@ int audsrv_adpcm_set_volume(int ch, int voll, int volr);
 void *audsrv_load_adpcm(u32 *buffer, int size, int id);
 #define audsrv_play_adpcm(id)      audsrv_ch_play_adpcm(-1, id) //For backward-compatibility
 int audsrv_ch_play_adpcm(int ch, u32 id);
+int audsrv_is_adpcm_playing(int ch, u32 id);
 int free_sample(u32 id);
 
 #define audsrv_IMPORTS_start DECLARE_IMPORT_TABLE(audsrv, 1, 4)

iop/sound/audsrv/src/adpcm.c

@@ -126,7 +126,7 @@ static adpcm_list_t *adpcm_loaded(int id)
 {
 	adpcm_list_t *cur = adpcm_list_head;
 
-	while (cur != 0)
+	while (cur != NULL)
 	{
 		if (cur->id == id)
 		{
@@ -207,6 +207,28 @@ void *audsrv_load_adpcm(u32 *buffer, int size, int id)
 	return sbuffer;
 }
 
+int audsrv_is_adpcm_playing(int ch, u32 id)
+{
+	u32 endx;
+	adpcm_list_t *a;
+
+	if (ch > 24)
+		return 0;
+
+	endx = sceSdGetSwitch(SD_CORE_1 | SD_SWITCH_ENDX);
+	if ((endx & (1 << ch)) != 0)
+		return 0;
+
+	a = adpcm_loaded(id);
+	if (a == NULL)
+	{
+		/* bad joke */
+		return AUDSRV_ERR_ARGS;
+	}
+
+	return a->spu2_addr == sceSdGetAddr(SD_CORE_1 | (ch << 1) | SD_VOICE_START);
+}
+
 static int audsrv_adpcm_alloc_channel(void)
 {
 	int i, channel;
@@ -229,7 +251,7 @@ static int audsrv_adpcm_alloc_channel(void)
 			channel = i;
 		}
 
-        	i++;
+		i++;
 	}
 
 	if (channel == -1)

iop/sound/audsrv/src/rpc_server.c

@@ -144,6 +144,10 @@ static void *rpc_command(int func, unsigned *data, int size)
 		ret = audsrv_ch_play_adpcm(data[0], data[1]);
 		break;
 
+		case AUDSRV_IS_ADPCM_PLAYING:
+		ret = audsrv_is_adpcm_playing(data[0], data[1]);
+		break;
+
 		case AUDSRV_FREE_ADPCM:
 		ret = free_sample(data[0]);
 		break;