telephony/net/asterisk-11.x-chan-dongle/patches/100-fix-audio-on-big-endian...

47 lines
1.2 KiB
Diff

--- a/channel.c
+++ b/channel.c
@@ -495,6 +495,19 @@ again:
}
}
+// see https://github.com/openwrt/telephony/issues/7
+static inline void change_audio_endianness_to_le(struct iovec *iov, int iovcnt)
+{
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+ return; // nothing to do
+#else
+ for(;iovcnt-->0;iov++)
+ {
+ ast_swapcopy_samples(iov->iov_base, iov->iov_base, iov->iov_len/2);
+ }
+#endif
+}
+
#/* */
static void timing_write (struct pvt* pvt)
{
@@ -522,6 +535,7 @@ static void timing_write (struct pvt* pv
iovcnt = mixb_read_n_iov (&pvt->a_write_mixb, iov, FRAME_SIZE);
mixb_read_n_iov (&pvt->a_write_mixb, iov, FRAME_SIZE);
mixb_read_upd (&pvt->a_write_mixb, FRAME_SIZE);
+ change_audio_endianness_to_le(iov, iovcnt);
}
else if (used > 0)
{
@@ -535,6 +549,7 @@ static void timing_write (struct pvt* pv
iov[iovcnt].iov_base = silence_frame;
iov[iovcnt].iov_len = FRAME_SIZE - used;
iovcnt++;
+ change_audio_endianness_to_le(iov, iovcnt);
}
else
{
@@ -544,6 +559,7 @@ static void timing_write (struct pvt* pv
iov[0].iov_base = silence_frame;
iov[0].iov_len = FRAME_SIZE;
iovcnt = 1;
+ // ignore endianness for zeros
// continue;
}