/usr/share/doc/libgroove-dev/examples/transcode.c is in libgroove-dev 4.3.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | /* transcode one or more files into one output file */
#include <groove/groove.h>
#include <groove/encoder.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
static int usage(char *arg0) {
fprintf(stderr, "Usage: %s file1 [file2 ...] --output outputfile [--bitrate 320] [--format name] [--codec name] [--mime mimetype]\n", arg0);
return 1;
}
int main(int argc, char * argv[]) {
// arg parsing
int bit_rate_k = 320;
char *format = NULL;
char *codec = NULL;
char *mime = NULL;
char *output_file_name = NULL;
groove_init();
atexit(groove_finish);
groove_set_logging(GROOVE_LOG_INFO);
struct GroovePlaylist *playlist = groove_playlist_create();
for (int i = 1; i < argc; i += 1) {
char *arg = argv[i];
if (arg[0] == '-' && arg[1] == '-') {
arg += 2;
if (i + 1 >= argc) {
return usage(argv[0]);
} else if (strcmp(arg, "bitrate") == 0) {
bit_rate_k = atoi(argv[++i]);
} else if (strcmp(arg, "format") == 0) {
format = argv[++i];
} else if (strcmp(arg, "codec") == 0) {
codec = argv[++i];
} else if (strcmp(arg, "mime") == 0) {
mime = argv[++i];
} else if (strcmp(arg, "output") == 0) {
output_file_name = argv[++i];
} else {
return usage(argv[0]);
}
} else {
struct GrooveFile * file = groove_file_open(arg);
if (!file) {
fprintf(stderr, "Error opening input file %s\n", arg);
return 1;
}
groove_playlist_insert(playlist, file, 1.0, 1.0, NULL);
}
}
if (!output_file_name)
return usage(argv[0]);
struct GrooveEncoder *encoder = groove_encoder_create();
encoder->bit_rate = bit_rate_k * 1000;
encoder->format_short_name = format;
encoder->codec_short_name = codec;
encoder->filename = output_file_name;
encoder->mime_type = mime;
if (groove_playlist_count(playlist) == 1) {
groove_file_audio_format(playlist->head->file, &encoder->target_audio_format);
// copy metadata
struct GrooveTag *tag = NULL;
while((tag = groove_file_metadata_get(playlist->head->file, "", tag, 0))) {
groove_encoder_metadata_set(encoder, groove_tag_key(tag), groove_tag_value(tag), 0);
}
}
if (groove_encoder_attach(encoder, playlist) < 0) {
fprintf(stderr, "error attaching encoder\n");
return 1;
}
FILE *f = fopen(output_file_name, "wb");
if (!f) {
fprintf(stderr, "Error opening output file %s\n", output_file_name);
return 1;
}
struct GrooveBuffer *buffer;
while (groove_encoder_buffer_get(encoder, &buffer, 1) == GROOVE_BUFFER_YES) {
fwrite(buffer->data[0], 1, buffer->size, f);
groove_buffer_unref(buffer);
}
fclose(f);
groove_encoder_detach(encoder);
groove_encoder_destroy(encoder);
struct GroovePlaylistItem *item = playlist->head;
while (item) {
struct GrooveFile *file = item->file;
struct GroovePlaylistItem *next = item->next;
groove_playlist_remove(playlist, item);
groove_file_close(file);
item = next;
}
groove_playlist_destroy(playlist);
return 0;
}
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