add support for specifying sample format (#317)

API: ausrc and auplay

- add config items for ausrc/auplay format:

  ausrc_format     s16|float
  auplay_format    s16|float

- audio.c: convert audio samples to/from signed 16-bit

Modules:

alsa
add test for sample format FLOAT
rst: add support for FLOAT sample format
audiounit: add support for FLOAT sample format
coreaudio: check for signed 16-bit audio format
oss: check for signed 16-bit sample format
winwave: check for S16LE
pulse: add support for FLOAT sample format
sndio: check for S16 format
gst1: check sample format
aufile: check sample format
aubridge: check sample format
gst: check sample format
opensles: check for S16 sample format
jack: check sample format
alsa: remove usage of local config

test: change samples to void pointer
test: change sample type to void pointer

1 files changed, 7 insertions, 0 deletions

diff --git a/modules/aubridge/src.c b/modules/aubridge/src.c
index 22ce13a..87fd64a 100644
--- a/modules/aubridge/src.c
+++ b/modules/aubridge/src.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2010 Creytiv.com
  */
 #include <re.h>
+#include <rem.h>
 #include <baresip.h>
 #include "aubridge.h"
 
@@ -31,6 +32,12 @@ int src_alloc(struct ausrc_st **stp, const struct ausrc *as,
 	if (!stp || !as || !prm)
 		return EINVAL;
 
+	if (prm->fmt != AUFMT_S16LE) {
+		warning("aubridge: source: unsupported sample format (%s)\n",
+			aufmt_name(prm->fmt));
+		return ENOTSUP;
+	}
+
 	st = mem_zalloc(sizeof(*st), ausrc_destructor);
 	if (!st)
 		return ENOMEM;