-
-/*
- * Alloc and fill array table of byte offsets. chunk_table[i] is the
- * offset in the current infile at which the sample containing time i *
- * CHUNK_TIME begins.
- */
-static void ogg_compute_chunk_table(double time_total)
-{
- int i, ret, num;
- ssize_t pos = 0, min = 0, old_pos;
-
- old_pos = 0;
- ret = 0;
- num = time_total / chunk_time + 3;
- PARA_DEBUG_LOG("chunk time: %g allocating %d chunk pointers\n",
- chunk_time, num);
- chunk_table = para_malloc(num * sizeof(size_t));
- chunk_table[0] = 0;
- max_chunk_len = 0;
- rewind(infile);
- for (i = 1; ret == 0; i++) {
- ogg_int64_t diff;
- ret = ov_time_seek(oggvorbis_file, i * chunk_time);
- if (ret)
- break;
- pos = ov_raw_tell(oggvorbis_file);
- diff = pos - old_pos;
- max_chunk_len = PARA_MAX(max_chunk_len, diff);
- min = (i == 1)? diff : PARA_MIN(min, diff);
- chunk_table[i] = pos;
- if (i < 11 || !((i - 1) % 1000)|| i > num - 11)
- PARA_DEBUG_LOG("chunk #%d: %g secs, pos: %zd, "
- "size: %zd\n", i - 1,
- i * chunk_time, pos, pos - old_pos);
- old_pos = pos;
- }
- num_chunks = i - 1;
- chunk_table[i] = pos;
- tunetable();
- PARA_INFO_LOG("%zu chunks (%fs), max chunk: %zd, min chunk: %zd\n",
- num_chunks, chunk_time, max_chunk_len, min);
- rewind(infile);
-}
-
-static void ogg_close_audio_file(void)
-{
- if (oggvorbis_file) {
- PARA_DEBUG_LOG("%s", "ov_clear\n");
- ov_clear(oggvorbis_file);
- free(oggvorbis_file);
- oggvorbis_file = NULL;
- }
- free(header);
- header = NULL;
- header_len = 0;
- free(chunk_table);
- chunk_table = NULL;
- num_chunks = 0;
- free(inbuf);
- inbuf = NULL;
- inbuf_size = 0;
-}
-
-static int ogg_save_header(FILE *file, int len)
-{
- int ret;
-
- header = para_malloc(len);
- rewind(file);
- ret = read(fileno(file), header, len);
- if (ret != len)
- return -E_OGG_READ;
- return 1;