alsa/file input: return -1 on eof (short read)

This will permit for a more graceful error than the next element in the
processing chain complaining that there's a 0-length input.

2 files changed, 4 insertions, 4 deletions

diff --git a/src/pq_alsa.c b/src/pq_alsa.c
index 2a4264e..9cee426 100644
--- a/src/pq_alsa.c
+++ b/src/pq_alsa.c
@@ -46,8 +46,8 @@ pq_cb_alsa_input(void *_state, uint8_t *out, const uint8_t *in, unsigned int in_
 	unsigned int num_samples = state->blk_len/2;
 	int rv;
 	rv = snd_pcm_readi(state->pcm_handle, out, num_samples);
-	if (rv < 0)
-		return rv;
+	if (rv <= 0)
+		return -1;
 	return rv * sizeof(uint16_t);
 }
 
diff --git a/src/pq_file.c b/src/pq_file.c
index e191a0a..96f7b3f 100644
--- a/src/pq_file.c
+++ b/src/pq_file.c
@@ -39,8 +39,8 @@ pq_cb_file_input(void *_state, uint8_t *out, const uint8_t *in, unsigned int in_
 	struct pq_state_file *state = _state;
 	int rv;
 	rv = fread(out, state->blk_len, 1, state->fh);
-	if (rv < 0)
-		return rv;
+	if (rv <= 0)
+		return -1;
 	return rv * state->blk_len;
 }