From 564a9c11d825f4d3073899998e17f02b04212824 Mon Sep 17 00:00:00 2001
From: Intel A80486DX2-66 <larry.holst@disroot.org>
Date: Tue, 9 Jan 2024 19:52:15 +0300
Subject: [PATCH] template.c: generate bytebeat after opening file

---
 src/template.c | 99 +++++++++++++++++++++++++-------------------------
 1 file changed, 50 insertions(+), 49 deletions(-)

diff --git a/src/template.c b/src/template.c
index 3b0c679..72906fb 100644
--- a/src/template.c
+++ b/src/template.c
@@ -129,6 +129,55 @@ main(void)
 	fflush(stdout);
 #endif
 
+	// * write WAVE headers
+	// 0. log
+#if !SILENT_MODE
+	printf("\nWriting out file output.wav...\n");
+	fflush(stdout);
+#endif
+
+	// 1. open file
+	FILE* output_file = fopen("output.wav", "wb");
+	if (output_file == NULL || !output_file) {
+		perror("fopen");
+		return 1;
+	}
+
+	// 2. prepare variables
+	uint32_t buffer_size = PRODUCT,
+		file_length =
+			4 * 4   /* 4 strings of 4 characters */ +
+			5 * 4   /* 4 uint32_t values */         +
+			4 * 2   /* 5 uint16_t values */         +
+			PRODUCT /* sample data */,
+		fmt_data_length = 16 /*
+		                      * length of format data before this value
+		                      * in the file format structure
+				      */,
+		sample_rate = SAMPLE_RATE,
+		byte_rate = (SAMPLE_RATE * BIT_DEPTH * CHANNELS) / 8;
+	uint16_t fmt_type = 1, // format type is PCM
+		channels = CHANNELS,
+		block_align = (BIT_DEPTH * CHANNELS) / 8,
+		bit_depth = BIT_DEPTH > 8 ? BIT_DEPTH : 8;
+
+	// 3. write headers
+	// <L = Little-endian or B = Big-endian> : <name> : <bytes of field>
+	fwrite   ("RIFF",           1, 4, output_file); // B : ChunkID       : 4
+	fwrite_le(&file_length,     4, 1, output_file); // L : ChunkSize     : 4
+	fwrite   ("WAVE",           1, 4, output_file); // B : Format        : 4
+	fwrite   ("fmt ",           1, 4, output_file); // B : Subchunk1ID   : 4
+	fwrite_le(&fmt_data_length, 4, 1, output_file); // L : Subchunk1Size : 4
+	fwrite_le(&fmt_type,        2, 1, output_file); // L : AudioFormat   : 2
+	fwrite_le(&channels,        2, 1, output_file); // L : NumChannels   : 2
+	fwrite_le(&sample_rate,     4, 1, output_file); // L : SampleRate    : 4
+	fwrite_le(&byte_rate,       4, 1, output_file); // L : ByteRate      : 4
+	fwrite_le(&block_align,     2, 1, output_file); // L : BlockAlign    : 2
+	fwrite_le(&bit_depth,       2, 1, output_file); // L : BitsPerSample : 2
+	fwrite   ("data",           1, 4, output_file); // B : Subchunk2ID   : 4
+	fwrite_le(&buffer_size,     4, 1, output_file); // L : Subchunk2Size : 4
+
+	// 4. write sample data
 	// * allocate heap for sample data
 	SAMPLE_TYPE* buffer = calloc(PRODUCT, sizeof(SAMPLE_TYPE));
 
@@ -193,55 +242,7 @@ main(void)
 	printf("%s", ANSI_CLEAR);
 #endif
 
-	// * wave file output
-	// 0. log
-#if !SILENT_MODE
-	printf("\nWriting out file output.wav...\n");
-	fflush(stdout);
-#endif
-
-	// 1. open file
-	FILE* output_file = fopen("output.wav", "wb");
-	if (output_file == NULL || !output_file) {
-		perror("fopen");
-		return 1;
-	}
-
-	// 2. prepare variables
-	uint32_t buffer_size = PRODUCT,
-		file_length =
-			4 * 4   /* 4 strings of 4 characters */ +
-			5 * 4   /* 4 uint32_t values */         +
-			4 * 2   /* 5 uint16_t values */         +
-			PRODUCT /* sample data */,
-		fmt_data_length = 16 /*
-		                      * length of format data before this value
-		                      * in the file format structure
-				      */,
-		sample_rate = SAMPLE_RATE,
-		byte_rate = (SAMPLE_RATE * BIT_DEPTH * CHANNELS) / 8;
-	uint16_t fmt_type = 1, // format type is PCM
-		channels = CHANNELS,
-		block_align = (BIT_DEPTH * CHANNELS) / 8,
-		bit_depth = BIT_DEPTH > 8 ? BIT_DEPTH : 8;
-
-	// 3. write headers
-	// <L = Little-endian or B = Big-endian> : <name> : <bytes of field>
-	fwrite   ("RIFF",           1, 4, output_file); // B : ChunkID       : 4
-	fwrite_le(&file_length,     4, 1, output_file); // L : ChunkSize     : 4
-	fwrite   ("WAVE",           1, 4, output_file); // B : Format        : 4
-	fwrite   ("fmt ",           1, 4, output_file); // B : Subchunk1ID   : 4
-	fwrite_le(&fmt_data_length, 4, 1, output_file); // L : Subchunk1Size : 4
-	fwrite_le(&fmt_type,        2, 1, output_file); // L : AudioFormat   : 2
-	fwrite_le(&channels,        2, 1, output_file); // L : NumChannels   : 2
-	fwrite_le(&sample_rate,     4, 1, output_file); // L : SampleRate    : 4
-	fwrite_le(&byte_rate,       4, 1, output_file); // L : ByteRate      : 4
-	fwrite_le(&block_align,     2, 1, output_file); // L : BlockAlign    : 2
-	fwrite_le(&bit_depth,       2, 1, output_file); // L : BitsPerSample : 2
-	fwrite   ("data",           1, 4, output_file); // B : Subchunk2ID   : 4
-	fwrite_le(&buffer_size,     4, 1, output_file); // L : Subchunk2Size : 4
-
-	// 4. write sample data
+	// * save the sample data into the file
 	fwrite_le(buffer, sizeof(SAMPLE_TYPE), buffer_size, output_file);
 
 	// 5. close file