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/*
* oggstreamtest.c
*/
#include <stdio.h>
#include <ogg/ogg.h>
void
output_page(ogg_page* page)
{
printf("Page:\n");
printf(" version: %d\n", ogg_page_version(page));
printf(" continued: %d\n", ogg_page_continued(page));
printf(" bos: %d\n", ogg_page_bos(page));
printf(" eos: %d\n", ogg_page_eos(page));
printf(" granule position: %d\n", ogg_page_granulepos(page));
printf(" stream serial number: %d\n", ogg_page_serialno(page));
printf(" page sequence number: %d\n", ogg_page_pageno(page));
}
void
read_from_stream(ogg_sync_state* sync_state)
{
char* buffer;
int bytes;
buffer = ogg_sync_buffer(sync_state, 4096);
bytes = fread(buffer, 1, 4096, stdin);
ogg_sync_wrote(sync_state, bytes);
}
void
output_packet(ogg_packet* packet)
{
printf(" Packet: ");
printf("bos: %d ", packet->b_o_s);
printf("eos: %d ", packet->e_o_s);
printf("granule position: %d\n", packet->granulepos);
printf(" packet number: %d ", packet->packetno);
printf("data length: %d\n", packet->bytes);
}
void
process_packets(ogg_stream_state* stream_state)
{
int nResult;
ogg_packet packet;
while (1)
{
nResult = ogg_stream_packetout(stream_state, &packet);
if (nResult == 0)
{
return;
}
else if (nResult == -1)
{
printf("corrupt data; can't get packet\n");
}
else
{
output_packet(&packet);
}
}
}
void
process_pages(ogg_sync_state* sync_state,
ogg_stream_state* stream_state)
{
int nResult;
ogg_page page;
while (1)
{
nResult = ogg_sync_pageout(sync_state, &page);
if (nResult == 0)
{
// need more data
return;
}
else if (nResult == -1)
{
printf("sync lost; can't get page\n");
}
else
{
output_page(&page);
nResult = ogg_stream_pagein(stream_state, &page);
if (nResult == -1)
{
printf("can't add page to stream");
}
process_packets(stream_state);
}
}
}
main()
{
ogg_sync_state sync_state;
ogg_stream_state stream_state;
ogg_page page;
int nResult;
ogg_sync_init(&sync_state);
read_from_stream(&sync_state);
ogg_sync_pageout(&sync_state, &page);
output_page(&page);
ogg_stream_init(&stream_state, ogg_page_serialno(&page));
nResult = ogg_stream_pagein(&stream_state, &page);
if (nResult == -1)
{
printf("can't add page to stream");
}
process_packets(&stream_state);
while (1)
{
process_pages(&sync_state, &stream_state);
read_from_stream(&sync_state);
}
}
/*** oggstreamtest.c ***/
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