# audio/stream-push Append interleaved PCM bytes to a push stream. SDL copies the data before returning, so GC-owned Deft strings are safe. ## Syntax

[audio/stream-push id bytes]

## Parameters - `id` — a stream id from `audio/stream-open` - `bytes` — binary-safe string of PCM in the stream's declared format/channels ## Examples

set queued [audio/stream-push $s $pcm-chunk]
if ($queued < 131072) {
    [audio/stream-push $s $next-chunk]   # stay under the backlog cap
}

## Returns number — total bytes queued in the stream after the append. Empty `bytes` returns 0 without writing. `%Err{:message}` for an unknown id, non-string bytes, or an SDL push failure. Copying means the source string can be released immediately. ## See Also `audio/stream-queued`, `audio/stream-clear`, `audio/stream-open`