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/*
ogmmerge -- utility for splicing together ogg bitstreams
from component media subtypes
p_index.cpp
video index
Written by Moritz Bunkus <moritz@bunkus.org>
Based on Xiph.org's 'oggmerge' found in their CVS repository
See http://www.xiph.org
Distributed under the GPL
see the file COPYING for details
or visit http://www.gnu.org/copyleft/gpl.html
*/
#ifdef ENABLE_INDEX
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <ogg/ogg.h>
#include "ogmmerge.h"
#include "queue.h"
#include "p_index.h"
#include "vorbis_header_utils.h"
index_packetizer_c::index_packetizer_c(int nserial) throw (error_c) : q_c() {
serialno = create_unique_serial();
ogg_stream_init(&os, serialno);
granulepos = 0;
serial = nserial;
packetno = 0;
produce_header_packets();
}
index_packetizer_c::~index_packetizer_c() {
}
void index_packetizer_c::reset() {
}
void index_packetizer_c::produce_header_packets() {
ogg_packet op;
stream_header sh;
int clen, res;
char *tempbuf;
vorbis_comment *vc;
tempbuf = (char *)malloc(sizeof(sh) + 64);
if (tempbuf == NULL)
die("malloc");
memset(&sh, 0, sizeof(sh));
strcpy(sh.streamtype, "index");
put_uint32(&sh.subtype[0], serial);
put_uint32(&sh.size, sizeof(sh));
put_uint64(&sh.time_unit, 10000000);
*((unsigned char *)tempbuf) = PACKET_TYPE_HEADER;
memcpy((char *)&tempbuf[1], &sh, sizeof(sh));
op.packet = (unsigned char *)tempbuf;
op.bytes = 1 + get_uint32(&sh.size);
op.b_o_s = 1;
op.e_o_s = 0;
op.packetno = 0;
op.granulepos = 0;
/* submit it */
ogg_stream_packetin(&os, &op);
packetno++;
flush_pages(PACKET_TYPE_HEADER);
/* Create the comments packet */
vc = generate_vorbis_comment(NULL);
clen = -1 * comments_to_buffer(vc, NULL, 0);
op.packet = (unsigned char *)tempbuf;
op.bytes = clen;
op.b_o_s = 0;
op.e_o_s = 0;
op.granulepos = 0;
op.packetno = 1;
if ((res = comments_to_buffer(vc, (char *)op.packet, clen)) < 0) {
fprintf(stderr, "FATAL: p_index: comments_to_buffer returned %d, " \
"clen is %d\n", res, clen);
exit(1);
}
ogg_stream_packetin(&os, &op);
flush_pages(PACKET_TYPE_COMMENT);
packetno++;
vorbis_comment_clear(vc);
free(vc);
}
int index_packetizer_c::process(idx_entry *entries, int num) {
ogg_packet op;
char *tempbuf;
tempbuf = (char *)malloc(num * sizeof(idx_entry) + 64);
if (tempbuf == NULL)
die("malloc");
this->serial = serial;
memcpy(&tempbuf[1], entries, num * sizeof(idx_entry));
tempbuf[0] = PACKET_IS_SYNCPOINT;
op.bytes = num * sizeof(idx_entry) + 1;
op.packet = (unsigned char *)tempbuf;
op.b_o_s = 0;
op.e_o_s = 1;
op.granulepos = 0;
op.packetno = packetno++;
ogg_stream_packetin(&os, &op);
flush_pages();
free(tempbuf);
return EMOREDATA;
}
void index_packetizer_c::produce_eos_packet() {
}
stamp_t index_packetizer_c::make_timestamp(ogg_int64_t granulepos) {
return 0;
}
#endif // ENABLE_INDEX
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