diff options
Diffstat (limited to 'drivers/isdn/mISDN/dsp_cmx.c')
| -rw-r--r-- | drivers/isdn/mISDN/dsp_cmx.c | 109 |
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) { |