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Frédéric Mangano 2013-01-01 16:52:45 +01:00
parent caf418b6a5
commit 20d6048504
1 changed files with 67 additions and 9 deletions
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76
opustags.c
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@ -107,14 +107,31 @@ void free_tags(opus_tags *tags){
}
}
int write_page(ogg_page *og, FILE *stream){
if(fwrite(og->header, 1, og->header_len, stream) < og->header_len)
return -1;
if(fwrite(og->body, 1, og->body_len, stream) < og->body_len)
return -1;
return 0;
}
int main(int argc, char **argv){
FILE *in = fopen(argv[1], "r");
if(!in){
perror("fopen");
return EXIT_FAILURE;
}
FILE *out = NULL;
if(argc == 3){
out = fopen(argv[2], "w");
if(!out){
perror("fopen");
fclose(in);
return EXIT_FAILURE;
}
}
ogg_sync_state oy;
ogg_stream_state os;
ogg_stream_state os, enc;
ogg_page og;
ogg_packet op;
opus_tags tags;
@ -140,11 +157,26 @@ int main(int argc, char **argv){
continue;
}
// We got a page.
if(packet_count == -1){ // First page
if(ogg_stream_init(&os, ogg_page_serialno(&og)) == -1){
error = "ogg_stream_init: unsuccessful";
// Short-circuit when the relevant packets have been read.
if(packet_count >= 2 && out){
if(write_page(&og, out) == -1){
error = "write_page: fwrite error";
break;
}
continue;
}
// Initialize the streams from the first page.
if(packet_count == -1){
if(ogg_stream_init(&os, ogg_page_serialno(&og)) == -1){
error = "ogg_stream_init: couldn't create a decoder";
break;
}
if(out){
if(ogg_stream_init(&enc, ogg_page_serialno(&og)) == -1){
error = "ogg_stream_init: couldn't create an encoder";
break;
}
}
packet_count = 0;
}
if(ogg_stream_pagein(&os, &og) == -1){
@ -155,12 +187,16 @@ int main(int argc, char **argv){
while(ogg_stream_packetout(&os, &op) == 1){
packet_count++;
if(packet_count == 1){ // Identification header
if(strncmp((char*) op.packet, "OpusHead", 8) != 0)
if(strncmp((char*) op.packet, "OpusHead", 8) != 0){
error = "opustags: invalid identification header";
break;
}
}
else if(packet_count == 2){ // Comment header
if(parse_tags((char*) op.packet, op.bytes, &tags) == -1)
if(parse_tags((char*) op.packet, op.bytes, &tags) == -1){
error = "opustags: invalid comment header";
break;
}
// DEBUG
delete_tags(&tags, "ARTIST");
const char *tag = "ARTIST=Someone";
@ -168,16 +204,38 @@ int main(int argc, char **argv){
print_tags(&tags);
// END DEBUG
free_tags(&tags);
break;
if(!out)
break;
}
if(out){
if(ogg_stream_packetin(&enc, &op) == -1){
error = "ogg_stream_packetin: internal error";
break;
}
}
}
if(error != NULL)
break;
if(ogg_stream_check(&os) != 0)
error = "ogg_stream_check: internal error";
error = "ogg_stream_check: internal error (decoder)";
// Write the page.
if(out){
ogg_stream_flush(&enc, &og);
if(write_page(&og, out) == -1)
error = "write_page: fwrite error";
else if(ogg_stream_check(&enc) != 0)
error = "ogg_stream_check: internal error (encoder)";
}
}
if(packet_count >= 0)
if(packet_count >= 0){
ogg_stream_clear(&os);
if(out)
ogg_stream_clear(&enc);
}
ogg_sync_clear(&oy);
fclose(in);
if(out)
fclose(out);
if(!error && packet_count < 2)
error = "opustags: invalid file";
if(error){