diff options
author | Andreas Eversberg <andreas@eversberg.eu> | 2009-05-22 11:04:49 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2009-05-25 07:51:34 (GMT) |
commit | bc138ec4ac58bb83e2d9d5c12328d5452294c1f0 (patch) | |
tree | 059a02dfee5e813bdf21131aaa7c15085dd7f768 /drivers/isdn | |
parent | b5df5a5c3bf0f809d854ad7156ce26b709b533c0 (diff) | |
download | linux-bc138ec4ac58bb83e2d9d5c12328d5452294c1f0.tar.xz |
mISDN: Hardware acceleration is now possible in conjunction with audio recording
Audio recording requires software audio processing.
Both hardware and software processing is simultaniously possible now.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn')
-rw-r--r-- | drivers/isdn/mISDN/dsp.h | 11 | ||||
-rw-r--r-- | drivers/isdn/mISDN/dsp_cmx.c | 101 | ||||
-rw-r--r-- | drivers/isdn/mISDN/dsp_core.c | 17 |
3 files changed, 84 insertions, 45 deletions
diff --git a/drivers/isdn/mISDN/dsp.h b/drivers/isdn/mISDN/dsp.h index 41c6cfd..564ea3e 100644 --- a/drivers/isdn/mISDN/dsp.h +++ b/drivers/isdn/mISDN/dsp.h @@ -151,6 +151,15 @@ struct dsp_tone { struct timer_list tl; }; +/*************** + * echo stuff * + ***************/ + +struct dsp_echo { + int software; /* echo is generated by software */ + int hardware; /* echo is generated by hardware */ +}; + /***************** * general stuff * *****************/ @@ -161,7 +170,7 @@ struct dsp { struct mISDNchannel *up; unsigned char name[64]; int b_active; - int echo; /* echo is enabled */ + struct dsp_echo echo; int rx_disabled; /* what the user wants */ int rx_is_off; /* what the card is */ int tx_mix; diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c index ac84146..d19b4f6 100644 --- a/drivers/isdn/mISDN/dsp_cmx.c +++ b/drivers/isdn/mISDN/dsp_cmx.c @@ -163,8 +163,9 @@ dsp_cmx_debug(struct dsp *dsp) printk(KERN_DEBUG "-----Current DSP\n"); list_for_each_entry(odsp, &dsp_ilist, list) { - printk(KERN_DEBUG "* %s echo=%d txmix=%d", - odsp->name, odsp->echo, odsp->tx_mix); + printk(KERN_DEBUG "* %s hardecho=%d softecho=%d txmix=%d", + odsp->name, odsp->echo.hardware, odsp->echo.software, + odsp->tx_mix); if (odsp->conf) printk(" (Conf %d)", odsp->conf->id); if (dsp == odsp) @@ -177,10 +178,12 @@ dsp_cmx_debug(struct dsp *dsp) list_for_each_entry(member, &conf->mlist, list) { printk(KERN_DEBUG " - member = %s (slot_tx %d, bank_tx %d, " - "slot_rx %d, bank_rx %d hfc_conf %d)%s\n", + "slot_rx %d, bank_rx %d hfc_conf %d " + "tx_data %d rx_is_off %d)%s\n", member->dsp->name, member->dsp->pcm_slot_tx, member->dsp->pcm_bank_tx, member->dsp->pcm_slot_rx, member->dsp->pcm_bank_rx, member->dsp->hfc_conf, + member->dsp->tx_data, member->dsp->rx_is_off, (member->dsp == dsp) ? " *this*" : ""); } } @@ -385,7 +388,7 @@ dsp_cmx_hardware(struct dsp_conf *conf, struct dsp *dsp) int freeunits[8]; u_char freeslots[256]; int same_hfc = -1, same_pcm = -1, current_conf = -1, - all_conf = 1; + all_conf = 1, tx_data = 0; /* dsp gets updated (no conf) */ if (!conf) { @@ -409,7 +412,7 @@ one_member: /* process hw echo */ if (dsp->features.pcm_banks < 1) return; - if (!dsp->echo) { + if (!dsp->echo.software && !dsp->echo.hardware) { /* NO ECHO: remove PCM slot if assigned */ if (dsp->pcm_slot_tx >= 0 || dsp->pcm_slot_rx >= 0) { if (dsp_debug & DEBUG_DSP_CMX) @@ -427,10 +430,15 @@ one_member: } return; } + /* echo is enabled, find out if we use soft or hardware */ + dsp->echo.software = dsp->tx_data; + dsp->echo.hardware = 0; /* ECHO: already echo */ if (dsp->pcm_slot_tx >= 0 && dsp->pcm_slot_rx < 0 && - dsp->pcm_bank_tx == 2 && dsp->pcm_bank_rx == 2) + dsp->pcm_bank_tx == 2 && dsp->pcm_bank_rx == 2) { + dsp->echo.hardware = 1; return; + } /* ECHO: if slot already assigned */ if (dsp->pcm_slot_tx >= 0) { dsp->pcm_slot_rx = dsp->pcm_slot_tx; @@ -443,6 +451,7 @@ one_member: dsp->pcm_slot_tx); dsp_cmx_hw_message(dsp, MISDN_CTRL_HFC_PCM_CONN, dsp->pcm_slot_tx, 2, dsp->pcm_slot_rx, 2); + dsp->echo.hardware = 1; return; } /* ECHO: find slot */ @@ -472,6 +481,7 @@ one_member: "%s no slot available for echo\n", __func__); /* no more slots available */ + dsp->echo.software = 1; return; } /* assign free slot */ @@ -485,6 +495,7 @@ one_member: __func__, dsp->name, dsp->pcm_slot_tx); dsp_cmx_hw_message(dsp, MISDN_CTRL_HFC_PCM_CONN, dsp->pcm_slot_tx, 2, dsp->pcm_slot_rx, 2); + dsp->echo.hardware = 1; return; } @@ -554,7 +565,7 @@ conf_software: return; } /* check if member has echo turned on */ - if (member->dsp->echo) { + if (member->dsp->echo.hardware || member->dsp->echo.software) { if (dsp_debug & DEBUG_DSP_CMX) printk(KERN_DEBUG "%s dsp %s cannot form a conf, because " @@ -592,10 +603,9 @@ conf_software: if (member->dsp->tx_data) { if (dsp_debug & DEBUG_DSP_CMX) printk(KERN_DEBUG - "%s dsp %s cannot form a conf, because " - "tx_data is turned on\n", + "%s dsp %s tx_data is turned on\n", __func__, member->dsp->name); - goto conf_software; + tx_data = 1; } /* check if pipeline exists */ if (member->dsp->pipeline.inuse) { @@ -794,7 +804,7 @@ conf_software: nextm->dsp->pcm_slot_tx, nextm->dsp->pcm_bank_tx, nextm->dsp->pcm_slot_rx, nextm->dsp->pcm_bank_rx); conf->hardware = 1; - conf->software = 0; + conf->software = tx_data; return; /* if members have one bank (or on the same chip) */ } else { @@ -904,7 +914,7 @@ conf_software: nextm->dsp->pcm_slot_tx, nextm->dsp->pcm_bank_tx, nextm->dsp->pcm_slot_rx, nextm->dsp->pcm_bank_rx); conf->hardware = 1; - conf->software = 0; + conf->software = tx_data; return; } } @@ -1295,17 +1305,25 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members) int r, rr, t, tt, o_r, o_rr; int preload = 0; struct mISDNhead *hh, *thh; + int tx_data_only = 0; /* don't process if: */ if (!dsp->b_active) { /* if not active */ dsp->last_tx = 0; return; } - if (dsp->pcm_slot_tx >= 0 && /* connected to pcm slot */ + if (((dsp->conf && dsp->conf->hardware) || /* hardware conf */ + dsp->echo.hardware) && /* OR hardware echo */ dsp->tx_R == dsp->tx_W && /* AND no tx-data */ !(dsp->tone.tone && dsp->tone.software)) { /* AND not soft tones */ - dsp->last_tx = 0; - return; + if (!dsp->tx_data) { /* no tx_data for user space required */ + dsp->last_tx = 0; + return; + } + if (dsp->conf && dsp->conf->software && dsp->conf->hardware) + tx_data_only = 1; + if (dsp->conf->software && dsp->echo.hardware) + tx_data_only = 1; } #ifdef CMX_DEBUG @@ -1388,7 +1406,7 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members) /* PROCESS DATA (one member / no conf) */ if (!conf || members <= 1) { /* -> if echo is NOT enabled */ - if (!dsp->echo) { + if (!dsp->echo.software) { /* -> send tx-data if available or use 0-volume */ while (r != rr && t != tt) { *d++ = p[t]; /* write tx_buff */ @@ -1438,7 +1456,7 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members) o_r = (o_rr - rr + r) & CMX_BUFF_MASK; /* start rx-pointer at current read position*/ /* -> if echo is NOT enabled */ - if (!dsp->echo) { + if (!dsp->echo.software) { /* * -> copy other member's rx-data, * if tx-data is available, mix @@ -1486,7 +1504,7 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members) #endif /* PROCESS DATA (three or more members) */ /* -> if echo is NOT enabled */ - if (!dsp->echo) { + if (!dsp->echo.software) { /* * -> substract rx-data from conf-data, * if tx-data is available, mix @@ -1550,27 +1568,40 @@ send_packet: * becuase we want what we send, not what we filtered */ if (dsp->tx_data) { - /* PREPARE RESULT */ - txskb = mI_alloc_skb(len, GFP_ATOMIC); - if (!txskb) { - printk(KERN_ERR - "FATAL ERROR in mISDN_dsp.o: " - "cannot alloc %d bytes\n", len); + if (tx_data_only) { + hh->prim = DL_DATA_REQ; + hh->id = 0; + /* queue and trigger */ + skb_queue_tail(&dsp->sendq, nskb); + schedule_work(&dsp->workq); + /* exit because only tx_data is used */ + return; } else { - thh = mISDN_HEAD_P(txskb); - thh->prim = DL_DATA_REQ; - thh->id = 0; - memcpy(skb_put(txskb, len), nskb->data+preload, len); - /* queue (trigger later) */ - skb_queue_tail(&dsp->sendq, txskb); + txskb = mI_alloc_skb(len, GFP_ATOMIC); + if (!txskb) { + printk(KERN_ERR + "FATAL ERROR in mISDN_dsp.o: " + "cannot alloc %d bytes\n", len); + } else { + thh = mISDN_HEAD_P(txskb); + thh->prim = DL_DATA_REQ; + thh->id = 0; + memcpy(skb_put(txskb, len), nskb->data+preload, + len); + /* queue (trigger later) */ + skb_queue_tail(&dsp->sendq, txskb); + } } } + + /* send data only to card, if we don't just calculated tx_data */ /* adjust volume */ if (dsp->tx_volume) dsp_change_volume(nskb, dsp->tx_volume); /* pipeline */ if (dsp->pipeline.inuse) - dsp_pipeline_process_tx(&dsp->pipeline, nskb->data, nskb->len); + dsp_pipeline_process_tx(&dsp->pipeline, nskb->data, + nskb->len); /* crypt */ if (dsp->bf_enable) dsp_bf_encrypt(dsp, nskb->data, nskb->len); @@ -1891,10 +1922,8 @@ dsp_cmx_hdlc(struct dsp *dsp, struct sk_buff *skb) /* no conf */ if (!dsp->conf) { - /* in case of hardware (echo) */ - if (dsp->pcm_slot_tx >= 0) - return; - if (dsp->echo) { + /* in case of software echo */ + if (dsp->echo.software) { nskb = skb_clone(skb, GFP_ATOMIC); if (nskb) { hh = mISDN_HEAD_P(nskb); @@ -1910,7 +1939,7 @@ dsp_cmx_hdlc(struct dsp *dsp, struct sk_buff *skb) if (dsp->conf->hardware) return; list_for_each_entry(member, &dsp->conf->mlist, list) { - if (dsp->echo || member->dsp != dsp) { + if (dsp->echo.software || member->dsp != dsp) { nskb = skb_clone(skb, GFP_ATOMIC); if (nskb) { hh = mISDN_HEAD_P(nskb); diff --git a/drivers/isdn/mISDN/dsp_core.c b/drivers/isdn/mISDN/dsp_core.c index 6b49398..a0e0af8 100644 --- a/drivers/isdn/mISDN/dsp_core.c +++ b/drivers/isdn/mISDN/dsp_core.c @@ -203,13 +203,13 @@ dsp_rx_off_member(struct dsp *dsp) else if (dsp->dtmf.software) rx_off = 0; /* echo in software */ - else if (dsp->echo && dsp->pcm_slot_tx < 0) + else if (dsp->echo.software) rx_off = 0; /* bridge in software */ - else if (dsp->conf) { - if (dsp->conf->software) - rx_off = 0; - } + else if (dsp->conf && dsp->conf->software) + rx_off = 0; + /* data is not required by user space and not required + * for echo dtmf detection, soft-echo, soft-bridging */ if (rx_off == dsp->rx_is_off) return; @@ -415,7 +415,7 @@ tone_off: dsp_rx_off(dsp); break; case DSP_ECHO_ON: /* enable echo */ - dsp->echo = 1; /* soft echo */ + dsp->echo.software = 1; /* soft echo */ if (dsp_debug & DEBUG_DSP_CORE) printk(KERN_DEBUG "%s: enable cmx-echo\n", __func__); dsp_cmx_hardware(dsp->conf, dsp); @@ -424,7 +424,8 @@ tone_off: dsp_cmx_debug(dsp); break; case DSP_ECHO_OFF: /* disable echo */ - dsp->echo = 0; + dsp->echo.software = 0; + dsp->echo.hardware = 0; if (dsp_debug & DEBUG_DSP_CORE) printk(KERN_DEBUG "%s: disable cmx-echo\n", __func__); dsp_cmx_hardware(dsp->conf, dsp); @@ -722,7 +723,7 @@ dsp_function(struct mISDNchannel *ch, struct sk_buff *skb) skb->len, (dsp_options&DSP_OPT_ULAW)?1:0); } /* we need to process receive data if software */ - if (dsp->pcm_slot_tx < 0 && dsp->pcm_slot_rx < 0) { + if (dsp->conf && dsp->conf->software) { /* process data from card at cmx */ dsp_cmx_receive(dsp, skb); } |