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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>
This commit is contained in:
Andreas Eversberg
David S. Miller
parent
b5df5a5c3b
commit
bc138ec4ac
@ -151,6 +151,15 @@ struct dsp_tone {
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struct timer_list tl;
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};
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/***************
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* echo stuff *
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***************/
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struct dsp_echo {
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int software; /* echo is generated by software */
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int hardware; /* echo is generated by hardware */
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};
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/*****************
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* general stuff *
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*****************/
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@ -161,7 +170,7 @@ struct dsp {
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struct mISDNchannel *up;
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unsigned char name[64];
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int b_active;
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int echo; /* echo is enabled */
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struct dsp_echo echo;
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int rx_disabled; /* what the user wants */
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int rx_is_off; /* what the card is */
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int tx_mix;
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@ -163,8 +163,9 @@ dsp_cmx_debug(struct dsp *dsp)
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printk(KERN_DEBUG "-----Current DSP\n");
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list_for_each_entry(odsp, &dsp_ilist, list) {
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printk(KERN_DEBUG "* %s echo=%d txmix=%d",
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odsp->name, odsp->echo, odsp->tx_mix);
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printk(KERN_DEBUG "* %s hardecho=%d softecho=%d txmix=%d",
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odsp->name, odsp->echo.hardware, odsp->echo.software,
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odsp->tx_mix);
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if (odsp->conf)
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printk(" (Conf %d)", odsp->conf->id);
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if (dsp == odsp)
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@ -177,10 +178,12 @@ dsp_cmx_debug(struct dsp *dsp)
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list_for_each_entry(member, &conf->mlist, list) {
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printk(KERN_DEBUG
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" - member = %s (slot_tx %d, bank_tx %d, "
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"slot_rx %d, bank_rx %d hfc_conf %d)%s\n",
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"slot_rx %d, bank_rx %d hfc_conf %d "
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"tx_data %d rx_is_off %d)%s\n",
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member->dsp->name, member->dsp->pcm_slot_tx,
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member->dsp->pcm_bank_tx, member->dsp->pcm_slot_rx,
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member->dsp->pcm_bank_rx, member->dsp->hfc_conf,
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member->dsp->tx_data, member->dsp->rx_is_off,
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(member->dsp == dsp) ? " *this*" : "");
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}
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}
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@ -385,7 +388,7 @@ dsp_cmx_hardware(struct dsp_conf *conf, struct dsp *dsp)
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int freeunits[8];
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u_char freeslots[256];
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int same_hfc = -1, same_pcm = -1, current_conf = -1,
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all_conf = 1;
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all_conf = 1, tx_data = 0;
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/* dsp gets updated (no conf) */
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if (!conf) {
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@ -409,7 +412,7 @@ one_member:
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/* process hw echo */
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if (dsp->features.pcm_banks < 1)
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return;
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if (!dsp->echo) {
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if (!dsp->echo.software && !dsp->echo.hardware) {
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/* NO ECHO: remove PCM slot if assigned */
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if (dsp->pcm_slot_tx >= 0 || dsp->pcm_slot_rx >= 0) {
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if (dsp_debug & DEBUG_DSP_CMX)
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@ -427,10 +430,15 @@ one_member:
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}
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return;
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}
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/* echo is enabled, find out if we use soft or hardware */
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dsp->echo.software = dsp->tx_data;
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dsp->echo.hardware = 0;
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/* ECHO: already echo */
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if (dsp->pcm_slot_tx >= 0 && dsp->pcm_slot_rx < 0 &&
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dsp->pcm_bank_tx == 2 && dsp->pcm_bank_rx == 2)
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dsp->pcm_bank_tx == 2 && dsp->pcm_bank_rx == 2) {
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dsp->echo.hardware = 1;
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return;
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}
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/* ECHO: if slot already assigned */
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if (dsp->pcm_slot_tx >= 0) {
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dsp->pcm_slot_rx = dsp->pcm_slot_tx;
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@ -443,6 +451,7 @@ one_member:
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dsp->pcm_slot_tx);
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dsp_cmx_hw_message(dsp, MISDN_CTRL_HFC_PCM_CONN,
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dsp->pcm_slot_tx, 2, dsp->pcm_slot_rx, 2);
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dsp->echo.hardware = 1;
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return;
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}
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/* ECHO: find slot */
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@ -472,6 +481,7 @@ one_member:
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"%s no slot available for echo\n",
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__func__);
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/* no more slots available */
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dsp->echo.software = 1;
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return;
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}
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/* assign free slot */
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@ -485,6 +495,7 @@ one_member:
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__func__, dsp->name, dsp->pcm_slot_tx);
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dsp_cmx_hw_message(dsp, MISDN_CTRL_HFC_PCM_CONN,
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dsp->pcm_slot_tx, 2, dsp->pcm_slot_rx, 2);
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dsp->echo.hardware = 1;
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return;
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}
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@ -554,7 +565,7 @@ conf_software:
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return;
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}
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/* check if member has echo turned on */
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if (member->dsp->echo) {
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if (member->dsp->echo.hardware || member->dsp->echo.software) {
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if (dsp_debug & DEBUG_DSP_CMX)
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printk(KERN_DEBUG
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"%s dsp %s cannot form a conf, because "
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@ -592,10 +603,9 @@ conf_software:
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if (member->dsp->tx_data) {
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if (dsp_debug & DEBUG_DSP_CMX)
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printk(KERN_DEBUG
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"%s dsp %s cannot form a conf, because "
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"tx_data is turned on\n",
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"%s dsp %s tx_data is turned on\n",
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__func__, member->dsp->name);
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goto conf_software;
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tx_data = 1;
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}
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/* check if pipeline exists */
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if (member->dsp->pipeline.inuse) {
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@ -794,7 +804,7 @@ conf_software:
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nextm->dsp->pcm_slot_tx, nextm->dsp->pcm_bank_tx,
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nextm->dsp->pcm_slot_rx, nextm->dsp->pcm_bank_rx);
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conf->hardware = 1;
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conf->software = 0;
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conf->software = tx_data;
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return;
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/* if members have one bank (or on the same chip) */
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} else {
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@ -904,7 +914,7 @@ conf_software:
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nextm->dsp->pcm_slot_tx, nextm->dsp->pcm_bank_tx,
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nextm->dsp->pcm_slot_rx, nextm->dsp->pcm_bank_rx);
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conf->hardware = 1;
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conf->software = 0;
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conf->software = tx_data;
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return;
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}
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}
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@ -1295,17 +1305,25 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members)
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int r, rr, t, tt, o_r, o_rr;
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int preload = 0;
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struct mISDNhead *hh, *thh;
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int tx_data_only = 0;
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/* don't process if: */
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if (!dsp->b_active) { /* if not active */
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dsp->last_tx = 0;
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return;
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}
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if (dsp->pcm_slot_tx >= 0 && /* connected to pcm slot */
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if (((dsp->conf && dsp->conf->hardware) || /* hardware conf */
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dsp->echo.hardware) && /* OR hardware echo */
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dsp->tx_R == dsp->tx_W && /* AND no tx-data */
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!(dsp->tone.tone && dsp->tone.software)) { /* AND not soft tones */
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dsp->last_tx = 0;
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return;
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if (!dsp->tx_data) { /* no tx_data for user space required */
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dsp->last_tx = 0;
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return;
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}
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if (dsp->conf && dsp->conf->software && dsp->conf->hardware)
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tx_data_only = 1;
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if (dsp->conf->software && dsp->echo.hardware)
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tx_data_only = 1;
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}
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#ifdef CMX_DEBUG
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@ -1388,7 +1406,7 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members)
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/* PROCESS DATA (one member / no conf) */
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if (!conf || members <= 1) {
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/* -> if echo is NOT enabled */
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if (!dsp->echo) {
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if (!dsp->echo.software) {
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/* -> send tx-data if available or use 0-volume */
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while (r != rr && t != tt) {
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*d++ = p[t]; /* write tx_buff */
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@ -1438,7 +1456,7 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members)
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o_r = (o_rr - rr + r) & CMX_BUFF_MASK;
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/* start rx-pointer at current read position*/
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/* -> if echo is NOT enabled */
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if (!dsp->echo) {
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if (!dsp->echo.software) {
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/*
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* -> copy other member's rx-data,
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* if tx-data is available, mix
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@ -1486,7 +1504,7 @@ dsp_cmx_send_member(struct dsp *dsp, int len, s32 *c, int members)
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#endif
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/* PROCESS DATA (three or more members) */
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/* -> if echo is NOT enabled */
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if (!dsp->echo) {
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if (!dsp->echo.software) {
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/*
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* -> substract rx-data from conf-data,
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* if tx-data is available, mix
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@ -1550,27 +1568,40 @@ send_packet:
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* becuase we want what we send, not what we filtered
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*/
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if (dsp->tx_data) {
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/* PREPARE RESULT */
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txskb = mI_alloc_skb(len, GFP_ATOMIC);
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if (!txskb) {
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printk(KERN_ERR
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"FATAL ERROR in mISDN_dsp.o: "
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"cannot alloc %d bytes\n", len);
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if (tx_data_only) {
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hh->prim = DL_DATA_REQ;
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hh->id = 0;
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/* queue and trigger */
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skb_queue_tail(&dsp->sendq, nskb);
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schedule_work(&dsp->workq);
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/* exit because only tx_data is used */
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return;
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} else {
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thh = mISDN_HEAD_P(txskb);
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thh->prim = DL_DATA_REQ;
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thh->id = 0;
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memcpy(skb_put(txskb, len), nskb->data+preload, len);
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/* queue (trigger later) */
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skb_queue_tail(&dsp->sendq, txskb);
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txskb = mI_alloc_skb(len, GFP_ATOMIC);
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if (!txskb) {
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printk(KERN_ERR
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"FATAL ERROR in mISDN_dsp.o: "
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"cannot alloc %d bytes\n", len);
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} else {
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thh = mISDN_HEAD_P(txskb);
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thh->prim = DL_DATA_REQ;
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thh->id = 0;
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memcpy(skb_put(txskb, len), nskb->data+preload,
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len);
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/* queue (trigger later) */
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skb_queue_tail(&dsp->sendq, txskb);
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}
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}
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}
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/* send data only to card, if we don't just calculated tx_data */
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/* adjust volume */
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if (dsp->tx_volume)
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dsp_change_volume(nskb, dsp->tx_volume);
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/* pipeline */
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if (dsp->pipeline.inuse)
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dsp_pipeline_process_tx(&dsp->pipeline, nskb->data, nskb->len);
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dsp_pipeline_process_tx(&dsp->pipeline, nskb->data,
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nskb->len);
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/* crypt */
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if (dsp->bf_enable)
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dsp_bf_encrypt(dsp, nskb->data, nskb->len);
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@ -1891,10 +1922,8 @@ dsp_cmx_hdlc(struct dsp *dsp, struct sk_buff *skb)
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/* no conf */
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if (!dsp->conf) {
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/* in case of hardware (echo) */
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if (dsp->pcm_slot_tx >= 0)
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return;
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if (dsp->echo) {
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/* in case of software echo */
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if (dsp->echo.software) {
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nskb = skb_clone(skb, GFP_ATOMIC);
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if (nskb) {
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hh = mISDN_HEAD_P(nskb);
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@ -1910,7 +1939,7 @@ dsp_cmx_hdlc(struct dsp *dsp, struct sk_buff *skb)
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if (dsp->conf->hardware)
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return;
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list_for_each_entry(member, &dsp->conf->mlist, list) {
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if (dsp->echo || member->dsp != dsp) {
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if (dsp->echo.software || member->dsp != dsp) {
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nskb = skb_clone(skb, GFP_ATOMIC);
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if (nskb) {
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hh = mISDN_HEAD_P(nskb);
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@ -203,13 +203,13 @@ dsp_rx_off_member(struct dsp *dsp)
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else if (dsp->dtmf.software)
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rx_off = 0;
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/* echo in software */
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else if (dsp->echo && dsp->pcm_slot_tx < 0)
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else if (dsp->echo.software)
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rx_off = 0;
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/* bridge in software */
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else if (dsp->conf) {
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if (dsp->conf->software)
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rx_off = 0;
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}
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else if (dsp->conf && dsp->conf->software)
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rx_off = 0;
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/* data is not required by user space and not required
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* for echo dtmf detection, soft-echo, soft-bridging */
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if (rx_off == dsp->rx_is_off)
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return;
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@ -415,7 +415,7 @@ tone_off:
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dsp_rx_off(dsp);
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break;
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case DSP_ECHO_ON: /* enable echo */
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dsp->echo = 1; /* soft echo */
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dsp->echo.software = 1; /* soft echo */
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if (dsp_debug & DEBUG_DSP_CORE)
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printk(KERN_DEBUG "%s: enable cmx-echo\n", __func__);
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dsp_cmx_hardware(dsp->conf, dsp);
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@ -424,7 +424,8 @@ tone_off:
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dsp_cmx_debug(dsp);
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break;
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case DSP_ECHO_OFF: /* disable echo */
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dsp->echo = 0;
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dsp->echo.software = 0;
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dsp->echo.hardware = 0;
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if (dsp_debug & DEBUG_DSP_CORE)
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printk(KERN_DEBUG "%s: disable cmx-echo\n", __func__);
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dsp_cmx_hardware(dsp->conf, dsp);
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@ -722,7 +723,7 @@ dsp_function(struct mISDNchannel *ch, struct sk_buff *skb)
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skb->len, (dsp_options&DSP_OPT_ULAW)?1:0);
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}
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/* we need to process receive data if software */
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if (dsp->pcm_slot_tx < 0 && dsp->pcm_slot_rx < 0) {
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if (dsp->conf && dsp->conf->software) {
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/* process data from card at cmx */
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dsp_cmx_receive(dsp, skb);
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}
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