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path: root/drivers/isdn/mISDN/dsp_cmx.c
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Diffstat (limited to 'drivers/isdn/mISDN/dsp_cmx.c')
-rw-r--r--drivers/isdn/mISDN/dsp_cmx.c109
1 files changed, 53 insertions, 56 deletions
diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c
index a4f05c54c32b..87f7dff20ff6 100644
--- a/drivers/isdn/mISDN/dsp_cmx.c
+++ b/drivers/isdn/mISDN/dsp_cmx.c
@@ -1454,66 +1454,63 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members)
#ifdef CMX_CONF_DEBUG
if (0) {
#else
- if (members == 2) {
+ if (members == 2) {
#endif
- /* "other" becomes other party */
- other = (list_entry(conf->mlist.next,
- struct dsp_conf_member, list))->dsp;
- if (other == member)
- other = (list_entry(conf->mlist.prev,
- struct dsp_conf_member, list))->dsp;
- o_q = other->rx_buff; /* received data */
- o_rr = (other->rx_R + len) & CMX_BUFF_MASK;
- /* end of rx-pointer */
- o_r = (o_rr - rr + r) & CMX_BUFF_MASK;
- /* start rx-pointer at current read position*/
- /* -> if echo is NOT enabled */
- if (!dsp->echo.software) {
- /*
- * -> copy other member's rx-data,
- * if tx-data is available, mix
- */
- while (o_r != o_rr && t != tt) {
- *d++ = dsp_audio_mix_law[(p[t] << 8) | o_q[o_r]];
- t = (t + 1) & CMX_BUFF_MASK;
- o_r = (o_r + 1) & CMX_BUFF_MASK;
- }
- while (o_r != o_rr) {
- *d++ = o_q[o_r];
- o_r = (o_r + 1) & CMX_BUFF_MASK;
- }
- /* -> if echo is enabled */
- } else {
- /*
- * -> mix other member's rx-data with echo,
- * if tx-data is available, mix
- */
- while (r != rr && t != tt) {
- sample = dsp_audio_law_to_s32[p[t]] +
- dsp_audio_law_to_s32[q[r]] +
- dsp_audio_law_to_s32[o_q[o_r]];
- if (sample < -32768)
- sample = -32768;
- else if (sample > 32767)
- sample = 32767;
- *d++ = dsp_audio_s16_to_law[sample & 0xffff];
- /* tx-data + rx_data + echo */
- t = (t + 1) & CMX_BUFF_MASK;
- r = (r + 1) & CMX_BUFF_MASK;
- o_r = (o_r + 1) & CMX_BUFF_MASK;
- }
- while (r != rr) {
- *d++ = dsp_audio_mix_law[(q[r] << 8) | o_q[o_r]];
- r = (r + 1) & CMX_BUFF_MASK;
- o_r = (o_r + 1) & CMX_BUFF_MASK;
- }
+ /* "other" becomes other party */
+ other = (list_entry(conf->mlist.next,
+ struct dsp_conf_member, list))->dsp;
+ if (other == member)
+ other = (list_entry(conf->mlist.prev,
+ struct dsp_conf_member, list))->dsp;
+ o_q = other->rx_buff; /* received data */
+ o_rr = (other->rx_R + len) & CMX_BUFF_MASK;
+ /* end of rx-pointer */
+ o_r = (o_rr - rr + r) & CMX_BUFF_MASK;
+ /* start rx-pointer at current read position*/
+ /* -> if echo is NOT enabled */
+ if (!dsp->echo.software) {
+ /*
+ * -> copy other member's rx-data,
+ * if tx-data is available, mix
+ */
+ while (o_r != o_rr && t != tt) {
+ *d++ = dsp_audio_mix_law[(p[t] << 8) | o_q[o_r]];
+ t = (t + 1) & CMX_BUFF_MASK;
+ o_r = (o_r + 1) & CMX_BUFF_MASK;
+ }
+ while (o_r != o_rr) {
+ *d++ = o_q[o_r];
+ o_r = (o_r + 1) & CMX_BUFF_MASK;
+ }
+ /* -> if echo is enabled */
+ } else {
+ /*
+ * -> mix other member's rx-data with echo,
+ * if tx-data is available, mix
+ */
+ while (r != rr && t != tt) {
+ sample = dsp_audio_law_to_s32[p[t]] +
+ dsp_audio_law_to_s32[q[r]] +
+ dsp_audio_law_to_s32[o_q[o_r]];
+ if (sample < -32768)
+ sample = -32768;
+ else if (sample > 32767)
+ sample = 32767;
+ *d++ = dsp_audio_s16_to_law[sample & 0xffff];
+ /* tx-data + rx_data + echo */
+ t = (t + 1) & CMX_BUFF_MASK;
+ r = (r + 1) & CMX_BUFF_MASK;
+ o_r = (o_r + 1) & CMX_BUFF_MASK;
+ }
+ while (r != rr) {
+ *d++ = dsp_audio_mix_law[(q[r] << 8) | o_q[o_r]];
+ r = (r + 1) & CMX_BUFF_MASK;
+ o_r = (o_r + 1) & CMX_BUFF_MASK;
}
- dsp->tx_R = t;
- goto send_packet;
}
-#ifdef DSP_NEVER_DEFINED
+ dsp->tx_R = t;
+ goto send_packet;
}
-#endif
/* PROCESS DATA (three or more members) */
/* -> if echo is NOT enabled */
if (!dsp->echo.software) {