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render tags

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This commit is contained in:
Frédéric Mangano 2013-01-01 17:15:22 +01:00
parent 530a4eab23
commit a181ac8821
1 changed files with 43 additions and 1 deletions
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44
opustags.c
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@ -52,6 +52,39 @@ int parse_tags(char *data, long len, opus_tags *tags){
return 0;
}
int render_tags(opus_tags *tags, ogg_packet *op){
// Note: op->packet must be manually freed.
op->b_o_s = 0;
op->e_o_s = 0;
op->granulepos = 0;
op->packetno = 1;
long len = 8 + 4 + tags->vendor_length + 4;
uint32_t i;
for(i=0; i<tags->count; i++)
len += 4 + tags->lengths[i];
op->bytes = len;
char *data = malloc(len);
if(!data)
return -1;
op->packet = (unsigned char*) data;
uint32_t n;
memcpy(data, "OpusTags", 8);
n = htole32(tags->vendor_length);
memcpy(data+8, &n, 4);
memcpy(data+12, tags->vendor_string, tags->vendor_length);
data += 12 + tags->vendor_length;
n = htole32(tags->count);
memcpy(data, &n, 4);
data += 4;
for(i=0; i<tags->count; i++){
n = htole32(tags->lengths[i]);
memcpy(data, &n, 4);
memcpy(data+4, tags->comment[i], tags->lengths[i]);
data += 4 + tags->lengths[i];
}
return 0;
}
int match_field(const char *comment, uint32_t len, const char *field){
size_t field_len = strlen(field);
if(len <= field_len)
@ -205,9 +238,18 @@ int main(int argc, char **argv){
add_tags(&tags, &tag, 1);
print_tags(&tags);
// END DEBUG
if(out){
ogg_packet packet;
render_tags(&tags, &packet);
if(ogg_stream_packetin(&enc, &packet) == -1)
error = "ogg_stream_packetin: internal error";
free(packet.packet);
}
free_tags(&tags);
if(!out)
if(error)
break;
else
continue;
}
if(out){
if(ogg_stream_packetin(&enc, &op) == -1){