Check early for mastering voice when creating sendless source/submix voices

Author: flibitijibibo

src/FAudio.c

@@ -346,6 +346,12 @@ uint32_t FAudio_CreateSourceVoice(
 	LOG_API_ENTER(audio)
 	LOG_FORMAT(audio, pSourceFormat)
 
+	if (pSendList == NULL && audio->master == NULL)
+	{
+		LOG_ERROR(audio, "CreateSourceVoice called before mastering voice was initialized")
+		return FAUDIO_E_INVALID_CALL;
+	}
+
 	*ppSourceVoice = (FAudioSourceVoice*) audio->pMalloc(sizeof(FAudioVoice));
 	FAudio_zero(*ppSourceVoice, sizeof(FAudioSourceVoice));
 	(*ppSourceVoice)->audio = audio;
@@ -671,6 +677,12 @@ uint32_t FAudio_CreateSubmixVoice(
 
 	LOG_API_ENTER(audio)
 
+	if (pSendList == NULL && audio->master == NULL)
+	{
+		LOG_ERROR(audio, "CreateSourceVoice called before mastering voice was initialized")
+		return FAUDIO_E_INVALID_CALL;
+	}
+
 	*ppSubmixVoice = (FAudioSubmixVoice*) audio->pMalloc(sizeof(FAudioVoice));
 	FAudio_zero(*ppSubmixVoice, sizeof(FAudioSubmixVoice));
 	(*ppSubmixVoice)->audio = audio;

src/FAudio_internal.c

@@ -1738,6 +1738,7 @@ uint32_t FAudio_INTERNAL_VoiceOutputFrequency(
 	if ((pSendList == NULL) || (pSendList->SendCount == 0))
 	{
 		/* When we're deliberately given no sends, use master rate! */
+		FAudio_assert(voice->audio->master != NULL);
 		outSampleRate = voice->audio->master->master.inputSampleRate;
 	}
 	else