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Simple example of how to use basic functions of minimp3 header only library to decode an mp3 file
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| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <stdint.h> | |
| #define MINIMP3_ONLY_MP3 | |
| #define MINIMP3_NO_SIMD | |
| #define MINIMP3_IMPLEMENTATION | |
| #include "minimp3.h" | |
| void readFile(const char *filename, uint64_t *size, uint8_t **data) { | |
| *size = 0; | |
| *data = NULL; | |
| FILE *fin = fopen(filename, "rb"); | |
| if (fin != NULL) { | |
| fseek(fin, 0, SEEK_END); | |
| *size = ftell(fin); | |
| fseek(fin, 0, SEEK_SET); | |
| *data = malloc(*size); | |
| if (*data != NULL) { | |
| uint64_t nread = fread(*data, 1, *size, fin); | |
| if (nread != *size) { | |
| *size = 0; | |
| *data = NULL; | |
| } | |
| fclose(fin); | |
| } else { | |
| *size = 0; | |
| } | |
| } else { | |
| perror("fopen"); | |
| } | |
| } | |
| int main() { | |
| static mp3dec_t mp3d; | |
| mp3dec_init(&mp3d); | |
| uint64_t buf_size = 0; | |
| uint8_t *input_buf = NULL; | |
| readFile("test1.mp3", &buf_size, &input_buf); | |
| while (buf_size != 0) { | |
| /*typedef struct | |
| { | |
| int frame_bytes; | |
| int channels; | |
| int hz; | |
| int layer; | |
| int bitrate_kbps; | |
| } mp3dec_frame_info_t;*/ | |
| mp3dec_frame_info_t info; | |
| short pcm[MINIMP3_MAX_SAMPLES_PER_FRAME]; | |
| /*unsigned char *input_buf; - input byte stream*/ | |
| int samples = mp3dec_decode_frame(&mp3d, input_buf, buf_size, pcm, &info); | |
| printf("samples = %d\n", samples); | |
| buf_size -= info.frame_bytes; | |
| input_buf += info.frame_bytes; | |
| } | |
| } |
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This is an example of how to use the minimp3 header only library, as the original repo doesn't seem to show a complete simple example to use it.