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, 2 insertions, 1 deletions

diff --git a/test/test.h b/test/test.h
index 572e179..f276a8d 100644
--- a/test/test.h
+++ b/test/test.h
@@ -143,7 +143,7 @@ int mock_ausrc_register(struct ausrc **ausrcp);
 
 struct auplay;
 
-typedef void (mock_sample_h)(const int16_t *sampv, size_t sampc, void *arg);
+typedef void (mock_sample_h)(const void *sampv, size_t sampc, void *arg);
 
 int mock_auplay_register(struct auplay **auplayp,
 			 mock_sample_h *sampleh, void *arg);
@@ -206,6 +206,7 @@ int test_call_dtmf(void);
 int test_call_video(void);
 int test_call_aulevel(void);
 int test_call_progress(void);
+int test_call_format_float(void);
 
 #ifdef USE_VIDEO
 int test_video(void);