-/**
- * read a chunk of data from the current audio file
- *
- * \param current_chunk the chunk number to read
- *
- * \return The length of the chunk on success, zero on end of file, negative on
- * errors. Note: If the current chunk is of length zero, but the end of the
- * file is not yet reached, this function returns -E_EMPTY_CHUNK.
- * */
-ssize_t vss_read_chunk(void)
-{
- ssize_t len;
- size_t pos;
- int ret;
- long unsigned cc = mmd->current_chunk;
-
- if (cc >= mmd->afi.chunks_total) /* eof */
- return 0;
- len = mmd->afi.chunk_table[cc + 1] - mmd->afi.chunk_table[cc];
- if (!len) /* nothing to send for this run */
- return -E_EMPTY_CHUNK;
- pos = mmd->afi.chunk_table[cc];
- if (inbuf_size < len) {
- PARA_INFO_LOG("increasing inbuf for chunk #%lu/%lu to %zu bytes\n",
- cc, mmd->afi.chunks_total, len);
- inbuf = para_realloc(inbuf, len);
- inbuf_size = len;
- }
- ret = para_fseek(audio_file, pos, SEEK_SET);
- if (ret < 0)
- return ret;
- return para_fread(inbuf, len, 1, audio_file);
-}
-