80486DX2-66/C-bytebeat-render
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template.c: generate bytebeat after opening file

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Intel A80486DX2-66 2024-01-09 19:52:15 +03:00
parent a48567f4fa
commit 564a9c11d8
Signed by: 80486DX2-66
GPG Key ID: 83631EF27054609B
1 changed files with 50 additions and 49 deletions
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src/template.c
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@ -129,6 +129,55 @@ main(void)
fflush(stdout); fflush(stdout);
#endif #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 // * allocate heap for sample data
SAMPLE_TYPE* buffer = calloc(PRODUCT, sizeof(SAMPLE_TYPE)); SAMPLE_TYPE* buffer = calloc(PRODUCT, sizeof(SAMPLE_TYPE));
@ -193,55 +242,7 @@ main(void)
printf("%s", ANSI_CLEAR); printf("%s", ANSI_CLEAR);
#endif #endif
// * wave file output // * save the sample data into the file
// 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
fwrite_le(buffer, sizeof(SAMPLE_TYPE), buffer_size, output_file); fwrite_le(buffer, sizeof(SAMPLE_TYPE), buffer_size, output_file);
// 5. close file // 5. close file