Fix pointer incrementes with low level decoder

Author: hrydgard

Core/HLE/AtracCtx2.cpp

@@ -1024,7 +1024,13 @@ int Atrac2::DecodeLowLevel(const u8 *srcData, int *bytesConsumed, s16 *dstData,
 
 	const int channels = outputChannels_;
 	int outSamples = 0;
-	decoder_->Decode(srcData, info.sampleSize, bytesConsumed, channels, dstData, &outSamples);
+	bool success = decoder_->Decode(srcData, info.sampleSize, bytesConsumed, channels, dstData, &outSamples);
+	if (!success) {
+		ERROR_LOG(Log::ME, "Low level decoding failed: sampleSize: %d bytesConsumed: %d", info.sampleSize, *bytesConsumed);
+		*bytesConsumed = 0;
+		*bytesWritten = 0;
+		return SCE_ERROR_ATRAC_API_FAIL;  // need to check what return value we get here.
+	}
 	*bytesWritten = outSamples * channels * sizeof(int16_t);
 	// TODO: Possibly return a decode error on bad data.
 	return 0;

Core/HLE/sceAtrac.cpp

@@ -1080,6 +1080,8 @@ static int sceAtracLowLevelDecode(int atracID, u32 sourceAddr, u32 sourceBytesCo
 	int bytesWritten = 0;
 
 	int retval = atrac->DecodeLowLevel(srcp, &bytesConsumed, outp, &bytesWritten);
+	*srcConsumed = bytesConsumed;
+	*outWritten = bytesWritten;
 
 	NotifyMemInfo(MemBlockFlags::WRITE, samplesAddr, bytesWritten, "AtracLowLevelDecode");
 	return hleDelayResult(hleLogDebug(Log::ME, retval), "low level atrac decode data", atracDecodeDelay);