eabe30fc9c
that includes significant features and SMP safety. This commit includes a more or less complete rewrite of the *BSD USB stack, including Host Controller and Device Controller drivers and updating all existing USB drivers to use the new USB API: 1) A brief feature list: - A new and mutex enabled USB API. - Many USB drivers are now running Giant free. - Linux USB kernel compatibility layer. - New UGEN backend and libusb library, finally solves the "driver unloading" problem. The new BSD licensed libusb20 library is fully compatible with libusb-0.1.12 from sourceforge. - New "usbconfig" utility, for easy configuration of USB. - Full support for Split transactions, which means you can use your full speed USB audio device on a high speed USB HUB. - Full support for HS ISOC transactions, which makes writing drivers for various HS webcams possible, for example. - Full support for USB on embedded platforms, mostly cache flushing and buffer invalidating stuff. - Safer parsing of USB descriptors. - Autodetect of annoying USB install disks. - Support for USB device side mode, also called USB gadget mode, using the same API like the USB host side. In other words the new USB stack is symmetric with regard to host and device side. - Support for USB transfers like I/O vectors, means more throughput and less interrupts. - ... see the FreeBSD quarterly status reports under "USB project" 2) To enable the driver in the default kernel build: 2.a) Remove all existing USB device options from your kernel config file. 2.b) Add the following USB device options to your kernel configuration file: # USB core support device usb2_core # USB controller support device usb2_controller device usb2_controller_ehci device usb2_controller_ohci device usb2_controller_uhci # USB mass storage support device usb2_storage device usb2_storage_mass # USB ethernet support, requires miibus device usb2_ethernet device usb2_ethernet_aue device usb2_ethernet_axe device usb2_ethernet_cdce device usb2_ethernet_cue device usb2_ethernet_kue device usb2_ethernet_rue device usb2_ethernet_dav # USB wireless LAN support device usb2_wlan device usb2_wlan_rum device usb2_wlan_ral device usb2_wlan_zyd # USB serial device support device usb2_serial device usb2_serial_ark device usb2_serial_bsa device usb2_serial_bser device usb2_serial_chcom device usb2_serial_cycom device usb2_serial_foma device usb2_serial_ftdi device usb2_serial_gensa device usb2_serial_ipaq device usb2_serial_lpt device usb2_serial_mct device usb2_serial_modem device usb2_serial_moscom device usb2_serial_plcom device usb2_serial_visor device usb2_serial_vscom # USB bluetooth support device usb2_bluetooth device usb2_bluetooth_ng # USB input device support device usb2_input device usb2_input_hid device usb2_input_kbd device usb2_input_ms # USB sound and MIDI device support device usb2_sound 2) To enable the driver at runtime: 2.a) Unload all existing USB modules. If USB is compiled into the kernel then you might have to build a new kernel. 2.b) Load the "usb2_xxx.ko" modules under /boot/kernel having the same base name like the kernel device option. Submitted by: Hans Petter Selasky hselasky at c2i dot net Reviewed by: imp, alfred
2209 lines
53 KiB
C
2209 lines
53 KiB
C
/*-
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* Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
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* Portions Copyright by Luigi Rizzo - 1997-99
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "opt_isa.h"
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#include <dev/sound/pcm/sound.h>
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#include "feeder_if.h"
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SND_DECLARE_FILE("$FreeBSD$");
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int report_soft_formats = 1;
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SYSCTL_INT(_hw_snd, OID_AUTO, report_soft_formats, CTLFLAG_RW,
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&report_soft_formats, 1, "report software-emulated formats");
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int chn_latency = CHN_LATENCY_DEFAULT;
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TUNABLE_INT("hw.snd.latency", &chn_latency);
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static int
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sysctl_hw_snd_latency(SYSCTL_HANDLER_ARGS)
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{
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int err, val;
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val = chn_latency;
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err = sysctl_handle_int(oidp, &val, 0, req);
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if (err != 0 || req->newptr == NULL)
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return err;
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if (val < CHN_LATENCY_MIN || val > CHN_LATENCY_MAX)
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err = EINVAL;
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else
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chn_latency = val;
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return err;
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}
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SYSCTL_PROC(_hw_snd, OID_AUTO, latency, CTLTYPE_INT | CTLFLAG_RW,
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0, sizeof(int), sysctl_hw_snd_latency, "I",
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"buffering latency (0=low ... 10=high)");
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int chn_latency_profile = CHN_LATENCY_PROFILE_DEFAULT;
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TUNABLE_INT("hw.snd.latency_profile", &chn_latency_profile);
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static int
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sysctl_hw_snd_latency_profile(SYSCTL_HANDLER_ARGS)
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{
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int err, val;
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val = chn_latency_profile;
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err = sysctl_handle_int(oidp, &val, 0, req);
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if (err != 0 || req->newptr == NULL)
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return err;
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if (val < CHN_LATENCY_PROFILE_MIN || val > CHN_LATENCY_PROFILE_MAX)
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err = EINVAL;
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else
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chn_latency_profile = val;
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return err;
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}
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SYSCTL_PROC(_hw_snd, OID_AUTO, latency_profile, CTLTYPE_INT | CTLFLAG_RW,
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0, sizeof(int), sysctl_hw_snd_latency_profile, "I",
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"buffering latency profile (0=aggresive 1=safe)");
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static int chn_timeout = CHN_TIMEOUT;
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TUNABLE_INT("hw.snd.timeout", &chn_timeout);
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#ifdef SND_DEBUG
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static int
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sysctl_hw_snd_timeout(SYSCTL_HANDLER_ARGS)
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{
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int err, val;
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val = chn_timeout;
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err = sysctl_handle_int(oidp, &val, 0, req);
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if (err != 0 || req->newptr == NULL)
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return err;
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if (val < CHN_TIMEOUT_MIN || val > CHN_TIMEOUT_MAX)
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err = EINVAL;
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else
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chn_timeout = val;
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return err;
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}
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SYSCTL_PROC(_hw_snd, OID_AUTO, timeout, CTLTYPE_INT | CTLFLAG_RW,
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0, sizeof(int), sysctl_hw_snd_timeout, "I",
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"interrupt timeout (1 - 10) seconds");
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#endif
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static int chn_usefrags = 0;
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TUNABLE_INT("hw.snd.usefrags", &chn_usefrags);
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static int chn_syncdelay = -1;
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TUNABLE_INT("hw.snd.syncdelay", &chn_syncdelay);
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#ifdef SND_DEBUG
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SYSCTL_INT(_hw_snd, OID_AUTO, usefrags, CTLFLAG_RW,
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&chn_usefrags, 1, "prefer setfragments() over setblocksize()");
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SYSCTL_INT(_hw_snd, OID_AUTO, syncdelay, CTLFLAG_RW,
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&chn_syncdelay, 1,
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"append (0-1000) millisecond trailing buffer delay on each sync");
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#endif
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/**
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* @brief Channel sync group lock
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*
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* Clients should acquire this lock @b without holding any channel locks
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* before touching syncgroups or the main syncgroup list.
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*/
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struct mtx snd_pcm_syncgroups_mtx;
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MTX_SYSINIT(pcm_syncgroup, &snd_pcm_syncgroups_mtx, "PCM channel sync group lock", MTX_DEF);
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/**
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* @brief syncgroups' master list
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*
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* Each time a channel syncgroup is created, it's added to this list. This
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* list should only be accessed with @sa snd_pcm_syncgroups_mtx held.
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*
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* See SNDCTL_DSP_SYNCGROUP for more information.
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*/
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struct pcm_synclist snd_pcm_syncgroups = SLIST_HEAD_INITIALIZER(head);
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static int chn_buildfeeder(struct pcm_channel *c);
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static void
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chn_lockinit(struct pcm_channel *c, int dir)
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{
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switch (dir) {
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case PCMDIR_PLAY:
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c->lock = snd_mtxcreate(c->name, "pcm play channel");
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cv_init(&c->intr_cv, "pcmwr");
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break;
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case PCMDIR_PLAY_VIRTUAL:
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c->lock = snd_mtxcreate(c->name, "pcm virtual play channel");
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cv_init(&c->intr_cv, "pcmwrv");
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break;
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case PCMDIR_REC:
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c->lock = snd_mtxcreate(c->name, "pcm record channel");
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cv_init(&c->intr_cv, "pcmrd");
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break;
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case PCMDIR_REC_VIRTUAL:
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c->lock = snd_mtxcreate(c->name, "pcm virtual record channel");
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cv_init(&c->intr_cv, "pcmrdv");
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break;
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case 0:
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c->lock = snd_mtxcreate(c->name, "pcm fake channel");
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cv_init(&c->intr_cv, "pcmfk");
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break;
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}
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cv_init(&c->cv, "pcmchn");
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}
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static void
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chn_lockdestroy(struct pcm_channel *c)
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{
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CHN_LOCKASSERT(c);
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CHN_BROADCAST(&c->cv);
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CHN_BROADCAST(&c->intr_cv);
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cv_destroy(&c->cv);
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cv_destroy(&c->intr_cv);
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snd_mtxfree(c->lock);
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}
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/**
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* @brief Determine channel is ready for I/O
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*
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* @retval 1 = ready for I/O
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* @retval 0 = not ready for I/O
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*/
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static int
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chn_polltrigger(struct pcm_channel *c)
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{
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struct snd_dbuf *bs = c->bufsoft;
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unsigned amt, lim;
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CHN_LOCKASSERT(c);
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if (c->flags & CHN_F_MAPPED) {
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if (sndbuf_getprevblocks(bs) == 0)
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return 1;
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else
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return (sndbuf_getblocks(bs) > sndbuf_getprevblocks(bs))? 1 : 0;
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} else {
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amt = (c->direction == PCMDIR_PLAY)? sndbuf_getfree(bs) : sndbuf_getready(bs);
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#if 0
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lim = (c->flags & CHN_F_HAS_SIZE)? sndbuf_getblksz(bs) : 1;
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#endif
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lim = c->lw;
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return (amt >= lim) ? 1 : 0;
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}
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return 0;
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}
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static int
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chn_pollreset(struct pcm_channel *c)
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{
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struct snd_dbuf *bs = c->bufsoft;
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CHN_LOCKASSERT(c);
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sndbuf_updateprevtotal(bs);
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return 1;
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}
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static void
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chn_wakeup(struct pcm_channel *c)
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{
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struct snd_dbuf *bs;
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struct pcm_channel *ch;
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CHN_LOCKASSERT(c);
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bs = c->bufsoft;
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if (CHN_EMPTY(c, children.busy)) {
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if (SEL_WAITING(sndbuf_getsel(bs)) && chn_polltrigger(c))
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selwakeuppri(sndbuf_getsel(bs), PRIBIO);
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if (c->flags & CHN_F_SLEEPING) {
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/*
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* Ok, I can just panic it right here since it is
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* quite obvious that we never allow multiple waiters
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* from userland. I'm too generous...
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*/
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CHN_BROADCAST(&c->intr_cv);
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}
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} else {
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CHN_FOREACH(ch, c, children.busy) {
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CHN_LOCK(ch);
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chn_wakeup(ch);
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CHN_UNLOCK(ch);
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}
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}
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}
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static int
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chn_sleep(struct pcm_channel *c, int timeout)
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{
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int ret;
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CHN_LOCKASSERT(c);
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if (c->flags & CHN_F_DEAD)
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return (EINVAL);
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c->flags |= CHN_F_SLEEPING;
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ret = cv_timedwait_sig(&c->intr_cv, c->lock, timeout);
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c->flags &= ~CHN_F_SLEEPING;
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return ((c->flags & CHN_F_DEAD) ? EINVAL : ret);
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}
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/*
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* chn_dmaupdate() tracks the status of a dma transfer,
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* updating pointers.
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*/
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static unsigned int
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chn_dmaupdate(struct pcm_channel *c)
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{
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struct snd_dbuf *b = c->bufhard;
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unsigned int delta, old, hwptr, amt;
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KASSERT(sndbuf_getsize(b) > 0, ("bufsize == 0"));
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CHN_LOCKASSERT(c);
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old = sndbuf_gethwptr(b);
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hwptr = chn_getptr(c);
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delta = (sndbuf_getsize(b) + hwptr - old) % sndbuf_getsize(b);
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sndbuf_sethwptr(b, hwptr);
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if (c->direction == PCMDIR_PLAY) {
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amt = min(delta, sndbuf_getready(b));
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amt -= amt % sndbuf_getbps(b);
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if (amt > 0)
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sndbuf_dispose(b, NULL, amt);
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} else {
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amt = min(delta, sndbuf_getfree(b));
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amt -= amt % sndbuf_getbps(b);
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if (amt > 0)
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sndbuf_acquire(b, NULL, amt);
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}
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if (snd_verbose > 3 && CHN_STARTED(c) && delta == 0) {
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device_printf(c->dev, "WARNING: %s DMA completion "
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"too fast/slow ! hwptr=%u, old=%u "
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"delta=%u amt=%u ready=%u free=%u\n",
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CHN_DIRSTR(c), hwptr, old, delta, amt,
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sndbuf_getready(b), sndbuf_getfree(b));
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}
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return delta;
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}
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void
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chn_wrupdate(struct pcm_channel *c)
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{
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int ret;
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CHN_LOCKASSERT(c);
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KASSERT(c->direction == PCMDIR_PLAY, ("chn_wrupdate on bad channel"));
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if ((c->flags & (CHN_F_MAPPED | CHN_F_VIRTUAL)) || CHN_STOPPED(c))
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return;
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chn_dmaupdate(c);
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ret = chn_wrfeed(c);
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/* tell the driver we've updated the primary buffer */
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chn_trigger(c, PCMTRIG_EMLDMAWR);
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DEB(if (ret)
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printf("chn_wrupdate: chn_wrfeed returned %d\n", ret);)
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}
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int
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chn_wrfeed(struct pcm_channel *c)
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{
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struct snd_dbuf *b = c->bufhard;
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struct snd_dbuf *bs = c->bufsoft;
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unsigned int ret, amt;
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CHN_LOCKASSERT(c);
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if ((c->flags & CHN_F_MAPPED) && !(c->flags & CHN_F_CLOSING))
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sndbuf_acquire(bs, NULL, sndbuf_getfree(bs));
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amt = sndbuf_getfree(b);
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ret = (amt > 0) ? sndbuf_feed(bs, b, c, c->feeder, amt) : ENOSPC;
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/*
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* Possible xruns. There should be no empty space left in buffer.
|
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*/
|
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if (sndbuf_getfree(b) > 0)
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c->xruns++;
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if (sndbuf_getfree(b) < amt)
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chn_wakeup(c);
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return ret;
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}
|
|
|
|
static void
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chn_wrintr(struct pcm_channel *c)
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{
|
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int ret;
|
|
|
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CHN_LOCKASSERT(c);
|
|
/* update pointers in primary buffer */
|
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chn_dmaupdate(c);
|
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/* ...and feed from secondary to primary */
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ret = chn_wrfeed(c);
|
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/* tell the driver we've updated the primary buffer */
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chn_trigger(c, PCMTRIG_EMLDMAWR);
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DEB(if (ret)
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printf("chn_wrintr: chn_wrfeed returned %d\n", ret);)
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}
|
|
|
|
/*
|
|
* user write routine - uiomove data into secondary buffer, trigger if necessary
|
|
* if blocking, sleep, rinse and repeat.
|
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*
|
|
* called externally, so must handle locking
|
|
*/
|
|
|
|
int
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chn_write(struct pcm_channel *c, struct uio *buf)
|
|
{
|
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struct snd_dbuf *bs = c->bufsoft;
|
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void *off;
|
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int ret, timeout, sz, t, p;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
|
|
ret = 0;
|
|
timeout = chn_timeout * hz;
|
|
|
|
while (ret == 0 && buf->uio_resid > 0) {
|
|
sz = min(buf->uio_resid, sndbuf_getfree(bs));
|
|
if (sz > 0) {
|
|
/*
|
|
* The following assumes that the free space in
|
|
* the buffer can never be less around the
|
|
* unlock-uiomove-lock sequence.
|
|
*/
|
|
while (ret == 0 && sz > 0) {
|
|
p = sndbuf_getfreeptr(bs);
|
|
t = min(sz, sndbuf_getsize(bs) - p);
|
|
off = sndbuf_getbufofs(bs, p);
|
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CHN_UNLOCK(c);
|
|
ret = uiomove(off, t, buf);
|
|
CHN_LOCK(c);
|
|
sz -= t;
|
|
sndbuf_acquire(bs, NULL, t);
|
|
}
|
|
ret = 0;
|
|
if (CHN_STOPPED(c) && !(c->flags & CHN_F_NOTRIGGER)) {
|
|
ret = chn_start(c, 0);
|
|
if (ret != 0)
|
|
c->flags |= CHN_F_DEAD;
|
|
}
|
|
} else if (c->flags & (CHN_F_NBIO | CHN_F_NOTRIGGER)) {
|
|
/**
|
|
* @todo Evaluate whether EAGAIN is truly desirable.
|
|
* 4Front drivers behave like this, but I'm
|
|
* not sure if it at all violates the "write
|
|
* should be allowed to block" model.
|
|
*
|
|
* The idea is that, while set with CHN_F_NOTRIGGER,
|
|
* a channel isn't playing, *but* without this we
|
|
* end up with "interrupt timeout / channel dead".
|
|
*/
|
|
ret = EAGAIN;
|
|
} else {
|
|
ret = chn_sleep(c, timeout);
|
|
if (ret == EAGAIN) {
|
|
ret = EINVAL;
|
|
c->flags |= CHN_F_DEAD;
|
|
printf("%s: play interrupt timeout, "
|
|
"channel dead\n", c->name);
|
|
} else if (ret == ERESTART || ret == EINTR)
|
|
c->flags |= CHN_F_ABORTING;
|
|
}
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Feed new data from the read buffer. Can be called in the bottom half.
|
|
*/
|
|
int
|
|
chn_rdfeed(struct pcm_channel *c)
|
|
{
|
|
struct snd_dbuf *b = c->bufhard;
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
unsigned int ret, amt;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
|
|
if (c->flags & CHN_F_MAPPED)
|
|
sndbuf_dispose(bs, NULL, sndbuf_getready(bs));
|
|
|
|
amt = sndbuf_getfree(bs);
|
|
ret = (amt > 0) ? sndbuf_feed(b, bs, c, c->feeder, amt) : ENOSPC;
|
|
|
|
amt = sndbuf_getready(b);
|
|
if (amt > 0) {
|
|
c->xruns++;
|
|
sndbuf_dispose(b, NULL, amt);
|
|
}
|
|
|
|
if (sndbuf_getready(bs) > 0)
|
|
chn_wakeup(c);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
chn_rdupdate(struct pcm_channel *c)
|
|
{
|
|
int ret;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
KASSERT(c->direction == PCMDIR_REC, ("chn_rdupdate on bad channel"));
|
|
|
|
if ((c->flags & (CHN_F_MAPPED | CHN_F_VIRTUAL)) || CHN_STOPPED(c))
|
|
return;
|
|
chn_trigger(c, PCMTRIG_EMLDMARD);
|
|
chn_dmaupdate(c);
|
|
ret = chn_rdfeed(c);
|
|
DEB(if (ret)
|
|
printf("chn_rdfeed: %d\n", ret);)
|
|
|
|
}
|
|
|
|
/* read interrupt routine. Must be called with interrupts blocked. */
|
|
static void
|
|
chn_rdintr(struct pcm_channel *c)
|
|
{
|
|
int ret;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
/* tell the driver to update the primary buffer if non-dma */
|
|
chn_trigger(c, PCMTRIG_EMLDMARD);
|
|
/* update pointers in primary buffer */
|
|
chn_dmaupdate(c);
|
|
/* ...and feed from primary to secondary */
|
|
ret = chn_rdfeed(c);
|
|
}
|
|
|
|
/*
|
|
* user read routine - trigger if necessary, uiomove data from secondary buffer
|
|
* if blocking, sleep, rinse and repeat.
|
|
*
|
|
* called externally, so must handle locking
|
|
*/
|
|
|
|
int
|
|
chn_read(struct pcm_channel *c, struct uio *buf)
|
|
{
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
void *off;
|
|
int ret, timeout, sz, t, p;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
|
|
if (CHN_STOPPED(c) && !(c->flags & CHN_F_NOTRIGGER)) {
|
|
ret = chn_start(c, 0);
|
|
if (ret != 0) {
|
|
c->flags |= CHN_F_DEAD;
|
|
return (ret);
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
timeout = chn_timeout * hz;
|
|
|
|
while (ret == 0 && buf->uio_resid > 0) {
|
|
sz = min(buf->uio_resid, sndbuf_getready(bs));
|
|
if (sz > 0) {
|
|
/*
|
|
* The following assumes that the free space in
|
|
* the buffer can never be less around the
|
|
* unlock-uiomove-lock sequence.
|
|
*/
|
|
while (ret == 0 && sz > 0) {
|
|
p = sndbuf_getreadyptr(bs);
|
|
t = min(sz, sndbuf_getsize(bs) - p);
|
|
off = sndbuf_getbufofs(bs, p);
|
|
CHN_UNLOCK(c);
|
|
ret = uiomove(off, t, buf);
|
|
CHN_LOCK(c);
|
|
sz -= t;
|
|
sndbuf_dispose(bs, NULL, t);
|
|
}
|
|
ret = 0;
|
|
} else if (c->flags & (CHN_F_NBIO | CHN_F_NOTRIGGER))
|
|
ret = EAGAIN;
|
|
else {
|
|
ret = chn_sleep(c, timeout);
|
|
if (ret == EAGAIN) {
|
|
ret = EINVAL;
|
|
c->flags |= CHN_F_DEAD;
|
|
printf("%s: record interrupt timeout, "
|
|
"channel dead\n", c->name);
|
|
} else if (ret == ERESTART || ret == EINTR)
|
|
c->flags |= CHN_F_ABORTING;
|
|
}
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
void
|
|
chn_intr(struct pcm_channel *c)
|
|
{
|
|
uint8_t do_unlock;
|
|
if (CHN_LOCK_OWNED(c)) {
|
|
/*
|
|
* Allow sound drivers to call this function with
|
|
* "CHN_LOCK()" locked:
|
|
*/
|
|
do_unlock = 0;
|
|
} else {
|
|
do_unlock = 1;
|
|
CHN_LOCK(c);
|
|
}
|
|
c->interrupts++;
|
|
if (c->direction == PCMDIR_PLAY)
|
|
chn_wrintr(c);
|
|
else
|
|
chn_rdintr(c);
|
|
if (do_unlock) {
|
|
CHN_UNLOCK(c);
|
|
}
|
|
return;
|
|
}
|
|
|
|
u_int32_t
|
|
chn_start(struct pcm_channel *c, int force)
|
|
{
|
|
u_int32_t i, j;
|
|
struct snd_dbuf *b = c->bufhard;
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
int err;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
/* if we're running, or if we're prevented from triggering, bail */
|
|
if (CHN_STARTED(c) || ((c->flags & CHN_F_NOTRIGGER) && !force))
|
|
return (EINVAL);
|
|
|
|
err = 0;
|
|
|
|
if (force) {
|
|
i = 1;
|
|
j = 0;
|
|
} else {
|
|
if (c->direction == PCMDIR_REC) {
|
|
i = sndbuf_getfree(bs);
|
|
j = (i > 0) ? 1 : sndbuf_getready(b);
|
|
} else {
|
|
if (sndbuf_getfree(bs) == 0) {
|
|
i = 1;
|
|
j = 0;
|
|
} else {
|
|
struct snd_dbuf *pb;
|
|
|
|
pb = CHN_BUF_PARENT(c, b);
|
|
i = sndbuf_xbytes(sndbuf_getready(bs), bs, pb);
|
|
j = sndbuf_getbps(pb);
|
|
}
|
|
}
|
|
if (snd_verbose > 3 && CHN_EMPTY(c, children))
|
|
printf("%s: %s (%s) threshold i=%d j=%d\n",
|
|
__func__, CHN_DIRSTR(c),
|
|
(c->flags & CHN_F_VIRTUAL) ? "virtual" : "hardware",
|
|
i, j);
|
|
}
|
|
|
|
if (i >= j) {
|
|
c->flags |= CHN_F_TRIGGERED;
|
|
sndbuf_setrun(b, 1);
|
|
c->feedcount = (c->flags & CHN_F_CLOSING) ? 2 : 0;
|
|
c->interrupts = 0;
|
|
c->xruns = 0;
|
|
if (c->direction == PCMDIR_PLAY && c->parentchannel == NULL) {
|
|
sndbuf_fillsilence(b);
|
|
if (snd_verbose > 3)
|
|
printf("%s: %s starting! (%s) (ready=%d "
|
|
"force=%d i=%d j=%d intrtimeout=%u "
|
|
"latency=%dms)\n",
|
|
__func__,
|
|
(c->flags & CHN_F_HAS_VCHAN) ?
|
|
"VCHAN" : "HW",
|
|
(c->flags & CHN_F_CLOSING) ? "closing" :
|
|
"running",
|
|
sndbuf_getready(b),
|
|
force, i, j, c->timeout,
|
|
(sndbuf_getsize(b) * 1000) /
|
|
(sndbuf_getbps(b) * sndbuf_getspd(b)));
|
|
}
|
|
err = chn_trigger(c, PCMTRIG_START);
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
void
|
|
chn_resetbuf(struct pcm_channel *c)
|
|
{
|
|
struct snd_dbuf *b = c->bufhard;
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
|
|
c->blocks = 0;
|
|
sndbuf_reset(b);
|
|
sndbuf_reset(bs);
|
|
}
|
|
|
|
/*
|
|
* chn_sync waits until the space in the given channel goes above
|
|
* a threshold. The threshold is checked against fl or rl respectively.
|
|
* Assume that the condition can become true, do not check here...
|
|
*/
|
|
int
|
|
chn_sync(struct pcm_channel *c, int threshold)
|
|
{
|
|
struct snd_dbuf *b, *bs;
|
|
int ret, count, hcount, minflush, resid, residp, syncdelay, blksz;
|
|
u_int32_t cflag;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
|
|
if (c->direction != PCMDIR_PLAY)
|
|
return (EINVAL);
|
|
|
|
bs = c->bufsoft;
|
|
|
|
if ((c->flags & (CHN_F_DEAD | CHN_F_ABORTING)) ||
|
|
(threshold < 1 && sndbuf_getready(bs) < 1))
|
|
return (0);
|
|
|
|
/* if we haven't yet started and nothing is buffered, else start*/
|
|
if (CHN_STOPPED(c)) {
|
|
if (threshold > 0 || sndbuf_getready(bs) > 0) {
|
|
ret = chn_start(c, 1);
|
|
if (ret != 0)
|
|
return (ret);
|
|
} else
|
|
return (0);
|
|
}
|
|
|
|
b = CHN_BUF_PARENT(c, c->bufhard);
|
|
|
|
minflush = threshold + sndbuf_xbytes(sndbuf_getready(b), b, bs);
|
|
|
|
syncdelay = chn_syncdelay;
|
|
|
|
if (syncdelay < 0 && (threshold > 0 || sndbuf_getready(bs) > 0))
|
|
minflush += sndbuf_xbytes(sndbuf_getsize(b), b, bs);
|
|
|
|
/*
|
|
* Append (0-1000) millisecond trailing buffer (if needed)
|
|
* for slower / high latency hardwares (notably USB audio)
|
|
* to avoid audible truncation.
|
|
*/
|
|
if (syncdelay > 0)
|
|
minflush += (sndbuf_getbps(bs) * sndbuf_getspd(bs) *
|
|
((syncdelay > 1000) ? 1000 : syncdelay)) / 1000;
|
|
|
|
minflush -= minflush % sndbuf_getbps(bs);
|
|
|
|
if (minflush > 0) {
|
|
threshold = min(minflush, sndbuf_getfree(bs));
|
|
sndbuf_clear(bs, threshold);
|
|
sndbuf_acquire(bs, NULL, threshold);
|
|
minflush -= threshold;
|
|
}
|
|
|
|
resid = sndbuf_getready(bs);
|
|
residp = resid;
|
|
blksz = sndbuf_getblksz(b);
|
|
if (blksz < 1) {
|
|
printf("%s: WARNING: blksz < 1 ! maxsize=%d [%d/%d/%d]\n",
|
|
__func__, sndbuf_getmaxsize(b), sndbuf_getsize(b),
|
|
sndbuf_getblksz(b), sndbuf_getblkcnt(b));
|
|
if (sndbuf_getblkcnt(b) > 0)
|
|
blksz = sndbuf_getsize(b) / sndbuf_getblkcnt(b);
|
|
if (blksz < 1)
|
|
blksz = 1;
|
|
}
|
|
count = sndbuf_xbytes(minflush + resid, bs, b) / blksz;
|
|
hcount = count;
|
|
ret = 0;
|
|
|
|
if (snd_verbose > 3)
|
|
printf("%s: [begin] timeout=%d count=%d "
|
|
"minflush=%d resid=%d\n", __func__, c->timeout, count,
|
|
minflush, resid);
|
|
|
|
cflag = c->flags & CHN_F_CLOSING;
|
|
c->flags |= CHN_F_CLOSING;
|
|
while (count > 0 && (resid > 0 || minflush > 0)) {
|
|
ret = chn_sleep(c, c->timeout);
|
|
if (ret == ERESTART || ret == EINTR) {
|
|
c->flags |= CHN_F_ABORTING;
|
|
break;
|
|
} else if (ret == 0 || ret == EAGAIN) {
|
|
resid = sndbuf_getready(bs);
|
|
if (resid == residp) {
|
|
--count;
|
|
if (snd_verbose > 3)
|
|
printf("%s: [stalled] timeout=%d "
|
|
"count=%d hcount=%d "
|
|
"resid=%d minflush=%d\n",
|
|
__func__, c->timeout, count,
|
|
hcount, resid, minflush);
|
|
} else if (resid < residp && count < hcount) {
|
|
++count;
|
|
if (snd_verbose > 3)
|
|
printf("%s: [resume] timeout=%d "
|
|
"count=%d hcount=%d "
|
|
"resid=%d minflush=%d\n",
|
|
__func__, c->timeout, count,
|
|
hcount, resid, minflush);
|
|
}
|
|
if (minflush > 0 && sndbuf_getfree(bs) > 0) {
|
|
threshold = min(minflush,
|
|
sndbuf_getfree(bs));
|
|
sndbuf_clear(bs, threshold);
|
|
sndbuf_acquire(bs, NULL, threshold);
|
|
resid = sndbuf_getready(bs);
|
|
minflush -= threshold;
|
|
}
|
|
residp = resid;
|
|
} else
|
|
break;
|
|
}
|
|
c->flags &= ~CHN_F_CLOSING;
|
|
c->flags |= cflag;
|
|
|
|
if (snd_verbose > 3)
|
|
printf("%s: timeout=%d count=%d hcount=%d resid=%d residp=%d "
|
|
"minflush=%d ret=%d\n",
|
|
__func__, c->timeout, count, hcount, resid, residp,
|
|
minflush, ret);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* called externally, handle locking */
|
|
int
|
|
chn_poll(struct pcm_channel *c, int ev, struct thread *td)
|
|
{
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
int ret;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
if (!(c->flags & (CHN_F_MAPPED | CHN_F_TRIGGERED))) {
|
|
ret = chn_start(c, 1);
|
|
if (ret != 0)
|
|
return (0);
|
|
}
|
|
ret = 0;
|
|
if (chn_polltrigger(c) && chn_pollreset(c))
|
|
ret = ev;
|
|
else
|
|
selrecord(td, sndbuf_getsel(bs));
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* chn_abort terminates a running dma transfer. it may sleep up to 200ms.
|
|
* it returns the number of bytes that have not been transferred.
|
|
*
|
|
* called from: dsp_close, dsp_ioctl, with channel locked
|
|
*/
|
|
int
|
|
chn_abort(struct pcm_channel *c)
|
|
{
|
|
int missing = 0;
|
|
struct snd_dbuf *b = c->bufhard;
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
if (CHN_STOPPED(c))
|
|
return 0;
|
|
c->flags |= CHN_F_ABORTING;
|
|
|
|
c->flags &= ~CHN_F_TRIGGERED;
|
|
/* kill the channel */
|
|
chn_trigger(c, PCMTRIG_ABORT);
|
|
sndbuf_setrun(b, 0);
|
|
if (!(c->flags & CHN_F_VIRTUAL))
|
|
chn_dmaupdate(c);
|
|
missing = sndbuf_getready(bs);
|
|
|
|
c->flags &= ~CHN_F_ABORTING;
|
|
return missing;
|
|
}
|
|
|
|
/*
|
|
* this routine tries to flush the dma transfer. It is called
|
|
* on a close of a playback channel.
|
|
* first, if there is data in the buffer, but the dma has not yet
|
|
* begun, we need to start it.
|
|
* next, we wait for the play buffer to drain
|
|
* finally, we stop the dma.
|
|
*
|
|
* called from: dsp_close, not valid for record channels.
|
|
*/
|
|
|
|
int
|
|
chn_flush(struct pcm_channel *c)
|
|
{
|
|
struct snd_dbuf *b = c->bufhard;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
KASSERT(c->direction == PCMDIR_PLAY, ("chn_flush on bad channel"));
|
|
DEB(printf("chn_flush: c->flags 0x%08x\n", c->flags));
|
|
|
|
c->flags |= CHN_F_CLOSING;
|
|
chn_sync(c, 0);
|
|
c->flags &= ~CHN_F_TRIGGERED;
|
|
/* kill the channel */
|
|
chn_trigger(c, PCMTRIG_ABORT);
|
|
sndbuf_setrun(b, 0);
|
|
|
|
c->flags &= ~CHN_F_CLOSING;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
fmtvalid(u_int32_t fmt, u_int32_t *fmtlist)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; fmtlist[i]; i++)
|
|
if (fmt == fmtlist[i])
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static struct afmtstr_table default_afmtstr_table[] = {
|
|
{ "alaw", AFMT_A_LAW }, { "mulaw", AFMT_MU_LAW },
|
|
{ "u8", AFMT_U8 }, { "s8", AFMT_S8 },
|
|
{ "s16le", AFMT_S16_LE }, { "s16be", AFMT_S16_BE },
|
|
{ "u16le", AFMT_U16_LE }, { "u16be", AFMT_U16_BE },
|
|
{ "s24le", AFMT_S24_LE }, { "s24be", AFMT_S24_BE },
|
|
{ "u24le", AFMT_U24_LE }, { "u24be", AFMT_U24_BE },
|
|
{ "s32le", AFMT_S32_LE }, { "s32be", AFMT_S32_BE },
|
|
{ "u32le", AFMT_U32_LE }, { "u32be", AFMT_U32_BE },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
int
|
|
afmtstr_swap_sign(char *s)
|
|
{
|
|
if (s == NULL || strlen(s) < 2) /* full length of "s8" */
|
|
return 0;
|
|
if (*s == 's')
|
|
*s = 'u';
|
|
else if (*s == 'u')
|
|
*s = 's';
|
|
else
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
afmtstr_swap_endian(char *s)
|
|
{
|
|
if (s == NULL || strlen(s) < 5) /* full length of "s16le" */
|
|
return 0;
|
|
if (s[3] == 'l')
|
|
s[3] = 'b';
|
|
else if (s[3] == 'b')
|
|
s[3] = 'l';
|
|
else
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
u_int32_t
|
|
afmtstr2afmt(struct afmtstr_table *tbl, const char *s, int stereo)
|
|
{
|
|
size_t fsz, sz;
|
|
|
|
sz = (s == NULL) ? 0 : strlen(s);
|
|
|
|
if (sz > 1) {
|
|
|
|
if (tbl == NULL)
|
|
tbl = default_afmtstr_table;
|
|
|
|
for (; tbl->fmtstr != NULL; tbl++) {
|
|
fsz = strlen(tbl->fmtstr);
|
|
if (sz < fsz)
|
|
continue;
|
|
if (strncmp(s, tbl->fmtstr, fsz) != 0)
|
|
continue;
|
|
if (fsz == sz)
|
|
return tbl->format |
|
|
((stereo) ? AFMT_STEREO : 0);
|
|
if ((sz - fsz) < 2 || s[fsz] != ':')
|
|
break;
|
|
/*
|
|
* For now, just handle mono/stereo.
|
|
*/
|
|
if ((s[fsz + 2] == '\0' && (s[fsz + 1] == 'm' ||
|
|
s[fsz + 1] == '1')) ||
|
|
strcmp(s + fsz + 1, "mono") == 0)
|
|
return tbl->format;
|
|
if ((s[fsz + 2] == '\0' && (s[fsz + 1] == 's' ||
|
|
s[fsz + 1] == '2')) ||
|
|
strcmp(s + fsz + 1, "stereo") == 0)
|
|
return tbl->format | AFMT_STEREO;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
u_int32_t
|
|
afmt2afmtstr(struct afmtstr_table *tbl, u_int32_t afmt, char *dst,
|
|
size_t len, int type, int stereo)
|
|
{
|
|
u_int32_t fmt = 0;
|
|
char *fmtstr = NULL, *tag = "";
|
|
|
|
if (tbl == NULL)
|
|
tbl = default_afmtstr_table;
|
|
|
|
for (; tbl->format != 0; tbl++) {
|
|
if (tbl->format == 0)
|
|
break;
|
|
if ((afmt & ~AFMT_STEREO) != tbl->format)
|
|
continue;
|
|
fmt = afmt;
|
|
fmtstr = tbl->fmtstr;
|
|
break;
|
|
}
|
|
|
|
if (fmt != 0 && fmtstr != NULL && dst != NULL && len > 0) {
|
|
strlcpy(dst, fmtstr, len);
|
|
switch (type) {
|
|
case AFMTSTR_SIMPLE:
|
|
tag = (fmt & AFMT_STEREO) ? ":s" : ":m";
|
|
break;
|
|
case AFMTSTR_NUM:
|
|
tag = (fmt & AFMT_STEREO) ? ":2" : ":1";
|
|
break;
|
|
case AFMTSTR_FULL:
|
|
tag = (fmt & AFMT_STEREO) ? ":stereo" : ":mono";
|
|
break;
|
|
case AFMTSTR_NONE:
|
|
default:
|
|
break;
|
|
}
|
|
if (strlen(tag) > 0 && ((stereo && !(fmt & AFMT_STEREO)) || \
|
|
(!stereo && (fmt & AFMT_STEREO))))
|
|
strlcat(dst, tag, len);
|
|
}
|
|
|
|
return fmt;
|
|
}
|
|
|
|
int
|
|
chn_reset(struct pcm_channel *c, u_int32_t fmt)
|
|
{
|
|
int hwspd, r;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
c->feedcount = 0;
|
|
c->flags &= CHN_F_RESET;
|
|
c->interrupts = 0;
|
|
c->timeout = 1;
|
|
c->xruns = 0;
|
|
|
|
r = CHANNEL_RESET(c->methods, c->devinfo);
|
|
if (fmt != 0) {
|
|
#if 0
|
|
hwspd = DSP_DEFAULT_SPEED;
|
|
/* only do this on a record channel until feederbuilder works */
|
|
if (c->direction == PCMDIR_REC)
|
|
RANGE(hwspd, chn_getcaps(c)->minspeed, chn_getcaps(c)->maxspeed);
|
|
c->speed = hwspd;
|
|
#endif
|
|
hwspd = chn_getcaps(c)->minspeed;
|
|
c->speed = hwspd;
|
|
|
|
if (r == 0)
|
|
r = chn_setformat(c, fmt);
|
|
if (r == 0)
|
|
r = chn_setspeed(c, hwspd);
|
|
#if 0
|
|
if (r == 0)
|
|
r = chn_setvolume(c, 100, 100);
|
|
#endif
|
|
}
|
|
if (r == 0)
|
|
r = chn_setlatency(c, chn_latency);
|
|
if (r == 0) {
|
|
chn_resetbuf(c);
|
|
r = CHANNEL_RESETDONE(c->methods, c->devinfo);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
int
|
|
chn_init(struct pcm_channel *c, void *devinfo, int dir, int direction)
|
|
{
|
|
struct feeder_class *fc;
|
|
struct snd_dbuf *b, *bs;
|
|
int ret;
|
|
|
|
if (chn_timeout < CHN_TIMEOUT_MIN || chn_timeout > CHN_TIMEOUT_MAX)
|
|
chn_timeout = CHN_TIMEOUT;
|
|
|
|
chn_lockinit(c, dir);
|
|
|
|
b = NULL;
|
|
bs = NULL;
|
|
CHN_INIT(c, children);
|
|
CHN_INIT(c, children.busy);
|
|
c->devinfo = NULL;
|
|
c->feeder = NULL;
|
|
c->latency = -1;
|
|
c->timeout = 1;
|
|
|
|
ret = ENOMEM;
|
|
b = sndbuf_create(c->dev, c->name, "primary", c);
|
|
if (b == NULL)
|
|
goto out;
|
|
bs = sndbuf_create(c->dev, c->name, "secondary", c);
|
|
if (bs == NULL)
|
|
goto out;
|
|
|
|
CHN_LOCK(c);
|
|
|
|
ret = EINVAL;
|
|
fc = feeder_getclass(NULL);
|
|
if (fc == NULL)
|
|
goto out;
|
|
if (chn_addfeeder(c, fc, NULL))
|
|
goto out;
|
|
|
|
/*
|
|
* XXX - sndbuf_setup() & sndbuf_resize() expect to be called
|
|
* with the channel unlocked because they are also called
|
|
* from driver methods that don't know about locking
|
|
*/
|
|
CHN_UNLOCK(c);
|
|
sndbuf_setup(bs, NULL, 0);
|
|
CHN_LOCK(c);
|
|
c->bufhard = b;
|
|
c->bufsoft = bs;
|
|
c->flags = 0;
|
|
c->feederflags = 0;
|
|
c->sm = NULL;
|
|
|
|
ret = ENODEV;
|
|
CHN_UNLOCK(c); /* XXX - Unlock for CHANNEL_INIT() malloc() call */
|
|
c->devinfo = CHANNEL_INIT(c->methods, devinfo, b, c, direction);
|
|
CHN_LOCK(c);
|
|
if (c->devinfo == NULL)
|
|
goto out;
|
|
|
|
ret = ENOMEM;
|
|
if ((sndbuf_getsize(b) == 0) && ((c->flags & CHN_F_VIRTUAL) == 0))
|
|
goto out;
|
|
|
|
ret = chn_setdir(c, direction);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = sndbuf_setfmt(b, AFMT_U8);
|
|
if (ret)
|
|
goto out;
|
|
|
|
ret = sndbuf_setfmt(bs, AFMT_U8);
|
|
if (ret)
|
|
goto out;
|
|
|
|
/**
|
|
* @todo Should this be moved somewhere else? The primary buffer
|
|
* is allocated by the driver or via DMA map setup, and tmpbuf
|
|
* seems to only come into existence in sndbuf_resize().
|
|
*/
|
|
if (c->direction == PCMDIR_PLAY) {
|
|
bs->sl = sndbuf_getmaxsize(bs);
|
|
bs->shadbuf = malloc(bs->sl, M_DEVBUF, M_NOWAIT);
|
|
if (bs->shadbuf == NULL) {
|
|
ret = ENOMEM;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
out:
|
|
CHN_UNLOCK(c);
|
|
if (ret) {
|
|
if (c->devinfo) {
|
|
if (CHANNEL_FREE(c->methods, c->devinfo))
|
|
sndbuf_free(b);
|
|
}
|
|
if (bs)
|
|
sndbuf_destroy(bs);
|
|
if (b)
|
|
sndbuf_destroy(b);
|
|
CHN_LOCK(c);
|
|
c->flags |= CHN_F_DEAD;
|
|
chn_lockdestroy(c);
|
|
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
chn_kill(struct pcm_channel *c)
|
|
{
|
|
struct snd_dbuf *b = c->bufhard;
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
|
|
if (CHN_STARTED(c)) {
|
|
CHN_LOCK(c);
|
|
chn_trigger(c, PCMTRIG_ABORT);
|
|
CHN_UNLOCK(c);
|
|
}
|
|
while (chn_removefeeder(c) == 0)
|
|
;
|
|
if (CHANNEL_FREE(c->methods, c->devinfo))
|
|
sndbuf_free(b);
|
|
sndbuf_destroy(bs);
|
|
sndbuf_destroy(b);
|
|
CHN_LOCK(c);
|
|
c->flags |= CHN_F_DEAD;
|
|
chn_lockdestroy(c);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
chn_setdir(struct pcm_channel *c, int dir)
|
|
{
|
|
#ifdef DEV_ISA
|
|
struct snd_dbuf *b = c->bufhard;
|
|
#endif
|
|
int r;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
c->direction = dir;
|
|
r = CHANNEL_SETDIR(c->methods, c->devinfo, c->direction);
|
|
#ifdef DEV_ISA
|
|
if (!r && SND_DMA(b))
|
|
sndbuf_dmasetdir(b, c->direction);
|
|
#endif
|
|
return r;
|
|
}
|
|
|
|
int
|
|
chn_setvolume(struct pcm_channel *c, int left, int right)
|
|
{
|
|
CHN_LOCKASSERT(c);
|
|
/* should add a feeder for volume changing if channel returns -1 */
|
|
if (left > 100)
|
|
left = 100;
|
|
if (left < 0)
|
|
left = 0;
|
|
if (right > 100)
|
|
right = 100;
|
|
if (right < 0)
|
|
right = 0;
|
|
c->volume = left | (right << 8);
|
|
return 0;
|
|
}
|
|
|
|
static u_int32_t
|
|
round_pow2(u_int32_t v)
|
|
{
|
|
u_int32_t ret;
|
|
|
|
if (v < 2)
|
|
v = 2;
|
|
ret = 0;
|
|
while (v >> ret)
|
|
ret++;
|
|
ret = 1 << (ret - 1);
|
|
while (ret < v)
|
|
ret <<= 1;
|
|
return ret;
|
|
}
|
|
|
|
static u_int32_t
|
|
round_blksz(u_int32_t v, int round)
|
|
{
|
|
u_int32_t ret, tmp;
|
|
|
|
if (round < 1)
|
|
round = 1;
|
|
|
|
ret = min(round_pow2(v), CHN_2NDBUFMAXSIZE >> 1);
|
|
|
|
if (ret > v && (ret >> 1) > 0 && (ret >> 1) >= ((v * 3) >> 2))
|
|
ret >>= 1;
|
|
|
|
tmp = ret - (ret % round);
|
|
while (tmp < 16 || tmp < round) {
|
|
ret <<= 1;
|
|
tmp = ret - (ret % round);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* 4Front call it DSP Policy, while we call it "Latency Profile". The idea
|
|
* is to keep 2nd buffer short so that it doesn't cause long queue during
|
|
* buffer transfer.
|
|
*
|
|
* Latency reference table for 48khz stereo 16bit: (PLAY)
|
|
*
|
|
* +---------+------------+-----------+------------+
|
|
* | Latency | Blockcount | Blocksize | Buffersize |
|
|
* +---------+------------+-----------+------------+
|
|
* | 0 | 2 | 64 | 128 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 1 | 4 | 128 | 512 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 2 | 8 | 512 | 4096 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 3 | 16 | 512 | 8192 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 4 | 32 | 512 | 16384 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 5 | 32 | 1024 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 6 | 16 | 2048 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 7 | 8 | 4096 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 8 | 4 | 8192 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 9 | 2 | 16384 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 10 | 2 | 32768 | 65536 |
|
|
* +---------+------------+-----------+------------+
|
|
*
|
|
* Recording need a different reference table. All we care is
|
|
* gobbling up everything within reasonable buffering threshold.
|
|
*
|
|
* Latency reference table for 48khz stereo 16bit: (REC)
|
|
*
|
|
* +---------+------------+-----------+------------+
|
|
* | Latency | Blockcount | Blocksize | Buffersize |
|
|
* +---------+------------+-----------+------------+
|
|
* | 0 | 512 | 32 | 16384 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 1 | 256 | 64 | 16384 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 2 | 128 | 128 | 16384 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 3 | 64 | 256 | 16384 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 4 | 32 | 512 | 16384 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 5 | 32 | 1024 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 6 | 16 | 2048 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 7 | 8 | 4096 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 8 | 4 | 8192 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 9 | 2 | 16384 | 32768 |
|
|
* +---------+------------+-----------+------------+
|
|
* | 10 | 2 | 32768 | 65536 |
|
|
* +---------+------------+-----------+------------+
|
|
*
|
|
* Calculations for other data rate are entirely based on these reference
|
|
* tables. For normal operation, Latency 5 seems give the best, well
|
|
* balanced performance for typical workload. Anything below 5 will
|
|
* eat up CPU to keep up with increasing context switches because of
|
|
* shorter buffer space and usually require the application to handle it
|
|
* aggresively through possibly real time programming technique.
|
|
*
|
|
*/
|
|
#define CHN_LATENCY_PBLKCNT_REF \
|
|
{{1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 1}, \
|
|
{1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 1}}
|
|
#define CHN_LATENCY_PBUFSZ_REF \
|
|
{{7, 9, 12, 13, 14, 15, 15, 15, 15, 15, 16}, \
|
|
{11, 12, 13, 14, 15, 16, 16, 16, 16, 16, 17}}
|
|
|
|
#define CHN_LATENCY_RBLKCNT_REF \
|
|
{{9, 8, 7, 6, 5, 5, 4, 3, 2, 1, 1}, \
|
|
{9, 8, 7, 6, 5, 5, 4, 3, 2, 1, 1}}
|
|
#define CHN_LATENCY_RBUFSZ_REF \
|
|
{{14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16}, \
|
|
{15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 17}}
|
|
|
|
#define CHN_LATENCY_DATA_REF 192000 /* 48khz stereo 16bit ~ 48000 x 2 x 2 */
|
|
|
|
static int
|
|
chn_calclatency(int dir, int latency, int bps, u_int32_t datarate,
|
|
u_int32_t max, int *rblksz, int *rblkcnt)
|
|
{
|
|
static int pblkcnts[CHN_LATENCY_PROFILE_MAX + 1][CHN_LATENCY_MAX + 1] =
|
|
CHN_LATENCY_PBLKCNT_REF;
|
|
static int pbufszs[CHN_LATENCY_PROFILE_MAX + 1][CHN_LATENCY_MAX + 1] =
|
|
CHN_LATENCY_PBUFSZ_REF;
|
|
static int rblkcnts[CHN_LATENCY_PROFILE_MAX + 1][CHN_LATENCY_MAX + 1] =
|
|
CHN_LATENCY_RBLKCNT_REF;
|
|
static int rbufszs[CHN_LATENCY_PROFILE_MAX + 1][CHN_LATENCY_MAX + 1] =
|
|
CHN_LATENCY_RBUFSZ_REF;
|
|
u_int32_t bufsz;
|
|
int lprofile, blksz, blkcnt;
|
|
|
|
if (latency < CHN_LATENCY_MIN || latency > CHN_LATENCY_MAX ||
|
|
bps < 1 || datarate < 1 ||
|
|
!(dir == PCMDIR_PLAY || dir == PCMDIR_REC)) {
|
|
if (rblksz != NULL)
|
|
*rblksz = CHN_2NDBUFMAXSIZE >> 1;
|
|
if (rblkcnt != NULL)
|
|
*rblkcnt = 2;
|
|
printf("%s: FAILED dir=%d latency=%d bps=%d "
|
|
"datarate=%u max=%u\n",
|
|
__func__, dir, latency, bps, datarate, max);
|
|
return CHN_2NDBUFMAXSIZE;
|
|
}
|
|
|
|
lprofile = chn_latency_profile;
|
|
|
|
if (dir == PCMDIR_PLAY) {
|
|
blkcnt = pblkcnts[lprofile][latency];
|
|
bufsz = pbufszs[lprofile][latency];
|
|
} else {
|
|
blkcnt = rblkcnts[lprofile][latency];
|
|
bufsz = rbufszs[lprofile][latency];
|
|
}
|
|
|
|
bufsz = round_pow2(snd_xbytes(1 << bufsz, CHN_LATENCY_DATA_REF,
|
|
datarate));
|
|
if (bufsz > max)
|
|
bufsz = max;
|
|
blksz = round_blksz(bufsz >> blkcnt, bps);
|
|
|
|
if (rblksz != NULL)
|
|
*rblksz = blksz;
|
|
if (rblkcnt != NULL)
|
|
*rblkcnt = 1 << blkcnt;
|
|
|
|
return blksz << blkcnt;
|
|
}
|
|
|
|
static int
|
|
chn_resizebuf(struct pcm_channel *c, int latency,
|
|
int blkcnt, int blksz)
|
|
{
|
|
struct snd_dbuf *b, *bs, *pb;
|
|
int sblksz, sblkcnt, hblksz, hblkcnt, limit = 1;
|
|
int ret;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
|
|
if ((c->flags & (CHN_F_MAPPED | CHN_F_TRIGGERED)) ||
|
|
!(c->direction == PCMDIR_PLAY || c->direction == PCMDIR_REC))
|
|
return EINVAL;
|
|
|
|
if (latency == -1) {
|
|
c->latency = -1;
|
|
latency = chn_latency;
|
|
} else if (latency == -2) {
|
|
latency = c->latency;
|
|
if (latency < CHN_LATENCY_MIN || latency > CHN_LATENCY_MAX)
|
|
latency = chn_latency;
|
|
} else if (latency < CHN_LATENCY_MIN || latency > CHN_LATENCY_MAX)
|
|
return EINVAL;
|
|
else {
|
|
c->latency = latency;
|
|
limit = 0;
|
|
}
|
|
|
|
bs = c->bufsoft;
|
|
b = c->bufhard;
|
|
|
|
if (!(blksz == 0 || blkcnt == -1) &&
|
|
(blksz < 16 || blksz < sndbuf_getbps(bs) || blkcnt < 2 ||
|
|
(blksz * blkcnt) > CHN_2NDBUFMAXSIZE))
|
|
return EINVAL;
|
|
|
|
chn_calclatency(c->direction, latency, sndbuf_getbps(bs),
|
|
sndbuf_getbps(bs) * sndbuf_getspd(bs), CHN_2NDBUFMAXSIZE,
|
|
&sblksz, &sblkcnt);
|
|
|
|
if (blksz == 0 || blkcnt == -1) {
|
|
if (blkcnt == -1)
|
|
c->flags &= ~CHN_F_HAS_SIZE;
|
|
if (c->flags & CHN_F_HAS_SIZE) {
|
|
blksz = sndbuf_getblksz(bs);
|
|
blkcnt = sndbuf_getblkcnt(bs);
|
|
}
|
|
} else
|
|
c->flags |= CHN_F_HAS_SIZE;
|
|
|
|
if (c->flags & CHN_F_HAS_SIZE) {
|
|
/*
|
|
* The application has requested their own blksz/blkcnt.
|
|
* Just obey with it, and let them toast alone. We can
|
|
* clamp it to the nearest latency profile, but that would
|
|
* defeat the purpose of having custom control. The least
|
|
* we can do is round it to the nearest ^2 and align it.
|
|
*/
|
|
sblksz = round_blksz(blksz, sndbuf_getbps(bs));
|
|
sblkcnt = round_pow2(blkcnt);
|
|
limit = 0;
|
|
}
|
|
|
|
if (c->parentchannel != NULL) {
|
|
pb = CHN_BUF_PARENT(c, NULL);
|
|
CHN_UNLOCK(c);
|
|
CHN_LOCK(c->parentchannel);
|
|
chn_notify(c->parentchannel, CHN_N_BLOCKSIZE);
|
|
CHN_UNLOCK(c->parentchannel);
|
|
CHN_LOCK(c);
|
|
limit = (limit != 0 && pb != NULL) ?
|
|
sndbuf_xbytes(sndbuf_getsize(pb), pb, bs) : 0;
|
|
c->timeout = c->parentchannel->timeout;
|
|
} else {
|
|
hblkcnt = 2;
|
|
if (c->flags & CHN_F_HAS_SIZE) {
|
|
hblksz = round_blksz(sndbuf_xbytes(sblksz, bs, b),
|
|
sndbuf_getbps(b));
|
|
hblkcnt = round_pow2(sndbuf_getblkcnt(bs));
|
|
} else
|
|
chn_calclatency(c->direction, latency,
|
|
sndbuf_getbps(b),
|
|
sndbuf_getbps(b) * sndbuf_getspd(b),
|
|
CHN_2NDBUFMAXSIZE, &hblksz, &hblkcnt);
|
|
|
|
if ((hblksz << 1) > sndbuf_getmaxsize(b))
|
|
hblksz = round_blksz(sndbuf_getmaxsize(b) >> 1,
|
|
sndbuf_getbps(b));
|
|
|
|
while ((hblksz * hblkcnt) > sndbuf_getmaxsize(b)) {
|
|
if (hblkcnt < 4)
|
|
hblksz >>= 1;
|
|
else
|
|
hblkcnt >>= 1;
|
|
}
|
|
|
|
hblksz -= hblksz % sndbuf_getbps(b);
|
|
|
|
#if 0
|
|
hblksz = sndbuf_getmaxsize(b) >> 1;
|
|
hblksz -= hblksz % sndbuf_getbps(b);
|
|
hblkcnt = 2;
|
|
#endif
|
|
|
|
CHN_UNLOCK(c);
|
|
if (chn_usefrags == 0 ||
|
|
CHANNEL_SETFRAGMENTS(c->methods, c->devinfo,
|
|
hblksz, hblkcnt) < 1)
|
|
sndbuf_setblksz(b, CHANNEL_SETBLOCKSIZE(c->methods,
|
|
c->devinfo, hblksz));
|
|
CHN_LOCK(c);
|
|
|
|
if (!CHN_EMPTY(c, children)) {
|
|
sblksz = round_blksz(
|
|
sndbuf_xbytes(sndbuf_getsize(b) >> 1, b, bs),
|
|
sndbuf_getbps(bs));
|
|
sblkcnt = 2;
|
|
limit = 0;
|
|
} else if (limit != 0)
|
|
limit = sndbuf_xbytes(sndbuf_getsize(b), b, bs);
|
|
|
|
/*
|
|
* Interrupt timeout
|
|
*/
|
|
c->timeout = ((u_int64_t)hz * sndbuf_getsize(b)) /
|
|
((u_int64_t)sndbuf_getspd(b) * sndbuf_getbps(b));
|
|
if (c->timeout < 1)
|
|
c->timeout = 1;
|
|
}
|
|
|
|
if (limit > CHN_2NDBUFMAXSIZE)
|
|
limit = CHN_2NDBUFMAXSIZE;
|
|
|
|
#if 0
|
|
while (limit > 0 && (sblksz * sblkcnt) > limit) {
|
|
if (sblkcnt < 4)
|
|
break;
|
|
sblkcnt >>= 1;
|
|
}
|
|
#endif
|
|
|
|
while ((sblksz * sblkcnt) < limit)
|
|
sblkcnt <<= 1;
|
|
|
|
while ((sblksz * sblkcnt) > CHN_2NDBUFMAXSIZE) {
|
|
if (sblkcnt < 4)
|
|
sblksz >>= 1;
|
|
else
|
|
sblkcnt >>= 1;
|
|
}
|
|
|
|
sblksz -= sblksz % sndbuf_getbps(bs);
|
|
|
|
if (sndbuf_getblkcnt(bs) != sblkcnt || sndbuf_getblksz(bs) != sblksz ||
|
|
sndbuf_getsize(bs) != (sblkcnt * sblksz)) {
|
|
ret = sndbuf_remalloc(bs, sblkcnt, sblksz);
|
|
if (ret != 0) {
|
|
printf("%s: Failed: %d %d\n", __func__,
|
|
sblkcnt, sblksz);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* OSSv4 docs: "By default OSS will set the low water level equal
|
|
* to the fragment size which is optimal in most cases."
|
|
*/
|
|
c->lw = sndbuf_getblksz(bs);
|
|
chn_resetbuf(c);
|
|
|
|
if (snd_verbose > 3)
|
|
printf("%s: %s (%s) timeout=%u "
|
|
"b[%d/%d/%d] bs[%d/%d/%d] limit=%d\n",
|
|
__func__, CHN_DIRSTR(c),
|
|
(c->flags & CHN_F_VIRTUAL) ? "virtual" : "hardware",
|
|
c->timeout,
|
|
sndbuf_getsize(b), sndbuf_getblksz(b),
|
|
sndbuf_getblkcnt(b),
|
|
sndbuf_getsize(bs), sndbuf_getblksz(bs),
|
|
sndbuf_getblkcnt(bs), limit);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
chn_setlatency(struct pcm_channel *c, int latency)
|
|
{
|
|
CHN_LOCKASSERT(c);
|
|
/* Destroy blksz/blkcnt, enforce latency profile. */
|
|
return chn_resizebuf(c, latency, -1, 0);
|
|
}
|
|
|
|
int
|
|
chn_setblocksize(struct pcm_channel *c, int blkcnt, int blksz)
|
|
{
|
|
CHN_LOCKASSERT(c);
|
|
/* Destroy latency profile, enforce blksz/blkcnt */
|
|
return chn_resizebuf(c, -1, blkcnt, blksz);
|
|
}
|
|
|
|
static int
|
|
chn_tryspeed(struct pcm_channel *c, int speed)
|
|
{
|
|
struct pcm_feeder *f;
|
|
struct snd_dbuf *b = c->bufhard;
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
struct snd_dbuf *x;
|
|
int r, delta;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
DEB(printf("setspeed, channel %s\n", c->name));
|
|
DEB(printf("want speed %d, ", speed));
|
|
if (speed <= 0)
|
|
return EINVAL;
|
|
if (CHN_STOPPED(c)) {
|
|
r = 0;
|
|
c->speed = speed;
|
|
sndbuf_setspd(bs, speed);
|
|
RANGE(speed, chn_getcaps(c)->minspeed, chn_getcaps(c)->maxspeed);
|
|
DEB(printf("try speed %d, ", speed));
|
|
sndbuf_setspd(b, CHANNEL_SETSPEED(c->methods, c->devinfo, speed));
|
|
DEB(printf("got speed %d\n", sndbuf_getspd(b)));
|
|
|
|
delta = sndbuf_getspd(b) - sndbuf_getspd(bs);
|
|
if (delta < 0)
|
|
delta = -delta;
|
|
|
|
c->feederflags &= ~(1 << FEEDER_RATE);
|
|
/*
|
|
* Used to be 500. It was too big!
|
|
*/
|
|
if (delta > feeder_rate_round)
|
|
c->feederflags |= 1 << FEEDER_RATE;
|
|
else
|
|
sndbuf_setspd(bs, sndbuf_getspd(b));
|
|
|
|
r = chn_buildfeeder(c);
|
|
DEB(printf("r = %d\n", r));
|
|
if (r)
|
|
goto out;
|
|
|
|
if (!(c->feederflags & (1 << FEEDER_RATE)))
|
|
goto out;
|
|
|
|
r = EINVAL;
|
|
f = chn_findfeeder(c, FEEDER_RATE);
|
|
DEB(printf("feedrate = %p\n", f));
|
|
if (f == NULL)
|
|
goto out;
|
|
|
|
x = (c->direction == PCMDIR_REC)? b : bs;
|
|
r = FEEDER_SET(f, FEEDRATE_SRC, sndbuf_getspd(x));
|
|
DEB(printf("feeder_set(FEEDRATE_SRC, %d) = %d\n", sndbuf_getspd(x), r));
|
|
if (r)
|
|
goto out;
|
|
|
|
x = (c->direction == PCMDIR_REC)? bs : b;
|
|
r = FEEDER_SET(f, FEEDRATE_DST, sndbuf_getspd(x));
|
|
DEB(printf("feeder_set(FEEDRATE_DST, %d) = %d\n", sndbuf_getspd(x), r));
|
|
out:
|
|
if (!r)
|
|
r = CHANNEL_SETFORMAT(c->methods, c->devinfo,
|
|
sndbuf_getfmt(b));
|
|
if (!r)
|
|
sndbuf_setfmt(bs, c->format);
|
|
if (!r)
|
|
r = chn_resizebuf(c, -2, 0, 0);
|
|
DEB(printf("setspeed done, r = %d\n", r));
|
|
return r;
|
|
} else
|
|
return EINVAL;
|
|
}
|
|
|
|
int
|
|
chn_setspeed(struct pcm_channel *c, int speed)
|
|
{
|
|
int r, oldspeed = c->speed;
|
|
|
|
r = chn_tryspeed(c, speed);
|
|
if (r) {
|
|
if (snd_verbose > 3)
|
|
printf("Failed to set speed %d falling back to %d\n",
|
|
speed, oldspeed);
|
|
r = chn_tryspeed(c, oldspeed);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static int
|
|
chn_tryformat(struct pcm_channel *c, u_int32_t fmt)
|
|
{
|
|
struct snd_dbuf *b = c->bufhard;
|
|
struct snd_dbuf *bs = c->bufsoft;
|
|
int r;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
if (CHN_STOPPED(c)) {
|
|
DEB(printf("want format %d\n", fmt));
|
|
c->format = fmt;
|
|
r = chn_buildfeeder(c);
|
|
if (r == 0) {
|
|
sndbuf_setfmt(bs, c->format);
|
|
chn_resetbuf(c);
|
|
r = CHANNEL_SETFORMAT(c->methods, c->devinfo, sndbuf_getfmt(b));
|
|
if (r == 0)
|
|
r = chn_tryspeed(c, c->speed);
|
|
}
|
|
return r;
|
|
} else
|
|
return EINVAL;
|
|
}
|
|
|
|
int
|
|
chn_setformat(struct pcm_channel *c, u_int32_t fmt)
|
|
{
|
|
u_int32_t oldfmt = c->format;
|
|
int r;
|
|
|
|
r = chn_tryformat(c, fmt);
|
|
if (r) {
|
|
if (snd_verbose > 3)
|
|
printf("Format change 0x%08x failed, reverting to 0x%08x\n",
|
|
fmt, oldfmt);
|
|
chn_tryformat(c, oldfmt);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
int
|
|
chn_trigger(struct pcm_channel *c, int go)
|
|
{
|
|
#ifdef DEV_ISA
|
|
struct snd_dbuf *b = c->bufhard;
|
|
#endif
|
|
struct snddev_info *d = c->parentsnddev;
|
|
int ret;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
#ifdef DEV_ISA
|
|
if (SND_DMA(b) && (go == PCMTRIG_EMLDMAWR || go == PCMTRIG_EMLDMARD))
|
|
sndbuf_dmabounce(b);
|
|
#endif
|
|
if (!PCMTRIG_COMMON(go))
|
|
return (CHANNEL_TRIGGER(c->methods, c->devinfo, go));
|
|
|
|
if (go == c->trigger)
|
|
return (0);
|
|
|
|
ret = CHANNEL_TRIGGER(c->methods, c->devinfo, go);
|
|
if (ret != 0)
|
|
return (ret);
|
|
|
|
switch (go) {
|
|
case PCMTRIG_START:
|
|
if (snd_verbose > 3)
|
|
device_printf(c->dev,
|
|
"%s() %s: calling go=0x%08x , "
|
|
"prev=0x%08x\n", __func__, c->name, go,
|
|
c->trigger);
|
|
if (c->trigger != PCMTRIG_START) {
|
|
c->trigger = go;
|
|
CHN_UNLOCK(c);
|
|
pcm_lock(d);
|
|
CHN_INSERT_HEAD(d, c, channels.pcm.busy);
|
|
pcm_unlock(d);
|
|
CHN_LOCK(c);
|
|
}
|
|
break;
|
|
case PCMTRIG_STOP:
|
|
case PCMTRIG_ABORT:
|
|
if (snd_verbose > 3)
|
|
device_printf(c->dev,
|
|
"%s() %s: calling go=0x%08x , "
|
|
"prev=0x%08x\n", __func__, c->name, go,
|
|
c->trigger);
|
|
if (c->trigger == PCMTRIG_START) {
|
|
c->trigger = go;
|
|
CHN_UNLOCK(c);
|
|
pcm_lock(d);
|
|
CHN_REMOVE(d, c, channels.pcm.busy);
|
|
pcm_unlock(d);
|
|
CHN_LOCK(c);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/**
|
|
* @brief Queries sound driver for sample-aligned hardware buffer pointer index
|
|
*
|
|
* This function obtains the hardware pointer location, then aligns it to
|
|
* the current bytes-per-sample value before returning. (E.g., a channel
|
|
* running in 16 bit stereo mode would require 4 bytes per sample, so a
|
|
* hwptr value ranging from 32-35 would be returned as 32.)
|
|
*
|
|
* @param c PCM channel context
|
|
* @returns sample-aligned hardware buffer pointer index
|
|
*/
|
|
int
|
|
chn_getptr(struct pcm_channel *c)
|
|
{
|
|
int hwptr;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
hwptr = (CHN_STARTED(c)) ? CHANNEL_GETPTR(c->methods, c->devinfo) : 0;
|
|
return (hwptr - (hwptr % sndbuf_getbps(c->bufhard)));
|
|
}
|
|
|
|
struct pcmchan_caps *
|
|
chn_getcaps(struct pcm_channel *c)
|
|
{
|
|
CHN_LOCKASSERT(c);
|
|
return CHANNEL_GETCAPS(c->methods, c->devinfo);
|
|
}
|
|
|
|
u_int32_t
|
|
chn_getformats(struct pcm_channel *c)
|
|
{
|
|
u_int32_t *fmtlist, fmts;
|
|
int i;
|
|
|
|
fmtlist = chn_getcaps(c)->fmtlist;
|
|
fmts = 0;
|
|
for (i = 0; fmtlist[i]; i++)
|
|
fmts |= fmtlist[i];
|
|
|
|
/* report software-supported formats */
|
|
if (report_soft_formats)
|
|
fmts |= AFMT_MU_LAW|AFMT_A_LAW|AFMT_U32_LE|AFMT_U32_BE|
|
|
AFMT_S32_LE|AFMT_S32_BE|AFMT_U24_LE|AFMT_U24_BE|
|
|
AFMT_S24_LE|AFMT_S24_BE|AFMT_U16_LE|AFMT_U16_BE|
|
|
AFMT_S16_LE|AFMT_S16_BE|AFMT_U8|AFMT_S8;
|
|
|
|
return fmts;
|
|
}
|
|
|
|
static int
|
|
chn_buildfeeder(struct pcm_channel *c)
|
|
{
|
|
struct feeder_class *fc;
|
|
struct pcm_feederdesc desc;
|
|
struct snd_mixer *m;
|
|
u_int32_t tmp[2], type, flags, hwfmt, *fmtlist;
|
|
int err;
|
|
char fmtstr[AFMTSTR_MAXSZ];
|
|
|
|
CHN_LOCKASSERT(c);
|
|
while (chn_removefeeder(c) == 0)
|
|
;
|
|
KASSERT((c->feeder == NULL), ("feeder chain not empty"));
|
|
|
|
c->align = sndbuf_getalign(c->bufsoft);
|
|
|
|
if (CHN_EMPTY(c, children) || c->direction == PCMDIR_REC) {
|
|
/*
|
|
* Virtual rec need this.
|
|
*/
|
|
fc = feeder_getclass(NULL);
|
|
KASSERT(fc != NULL, ("can't find root feeder"));
|
|
|
|
err = chn_addfeeder(c, fc, NULL);
|
|
if (err) {
|
|
DEB(printf("can't add root feeder, err %d\n", err));
|
|
|
|
return err;
|
|
}
|
|
c->feeder->desc->out = c->format;
|
|
} else if (c->direction == PCMDIR_PLAY) {
|
|
if (c->flags & CHN_F_HAS_VCHAN) {
|
|
desc.type = FEEDER_MIXER;
|
|
desc.in = c->format;
|
|
} else {
|
|
DEB(printf("can't decide which feeder type to use!\n"));
|
|
return EOPNOTSUPP;
|
|
}
|
|
desc.out = c->format;
|
|
desc.flags = 0;
|
|
fc = feeder_getclass(&desc);
|
|
if (fc == NULL) {
|
|
DEB(printf("can't find vchan feeder\n"));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
err = chn_addfeeder(c, fc, &desc);
|
|
if (err) {
|
|
DEB(printf("can't add vchan feeder, err %d\n", err));
|
|
|
|
return err;
|
|
}
|
|
} else
|
|
return EOPNOTSUPP;
|
|
|
|
/* XXX These are too much.. */
|
|
if (c->parentsnddev != NULL && c->parentsnddev->mixer_dev != NULL &&
|
|
c->parentsnddev->mixer_dev->si_drv1 != NULL)
|
|
m = c->parentsnddev->mixer_dev->si_drv1;
|
|
else
|
|
m = NULL;
|
|
|
|
c->feederflags &= ~(1 << FEEDER_VOLUME);
|
|
if (c->direction == PCMDIR_PLAY && !(c->flags & CHN_F_VIRTUAL) && m &&
|
|
(c->parentsnddev->flags & SD_F_SOFTPCMVOL))
|
|
c->feederflags |= 1 << FEEDER_VOLUME;
|
|
|
|
if (!(c->flags & CHN_F_VIRTUAL) && c->parentsnddev &&
|
|
((c->direction == PCMDIR_PLAY &&
|
|
(c->parentsnddev->flags & SD_F_PSWAPLR)) ||
|
|
(c->direction == PCMDIR_REC &&
|
|
(c->parentsnddev->flags & SD_F_RSWAPLR))))
|
|
c->feederflags |= 1 << FEEDER_SWAPLR;
|
|
|
|
flags = c->feederflags;
|
|
fmtlist = chn_getcaps(c)->fmtlist;
|
|
|
|
DEB(printf("feederflags %x\n", flags));
|
|
|
|
for (type = FEEDER_RATE; type < FEEDER_LAST; type++) {
|
|
if (flags & (1 << type)) {
|
|
desc.type = type;
|
|
desc.in = 0;
|
|
desc.out = 0;
|
|
desc.flags = 0;
|
|
DEB(printf("find feeder type %d, ", type));
|
|
if (type == FEEDER_VOLUME || type == FEEDER_RATE) {
|
|
if (c->feeder->desc->out & AFMT_32BIT)
|
|
strlcpy(fmtstr,"s32le", sizeof(fmtstr));
|
|
else if (c->feeder->desc->out & AFMT_24BIT)
|
|
strlcpy(fmtstr, "s24le", sizeof(fmtstr));
|
|
else {
|
|
/*
|
|
* 8bit doesn't provide enough headroom
|
|
* for proper processing without
|
|
* creating too much noises. Force to
|
|
* 16bit instead.
|
|
*/
|
|
strlcpy(fmtstr, "s16le", sizeof(fmtstr));
|
|
}
|
|
if (!(c->feeder->desc->out & AFMT_8BIT) &&
|
|
c->feeder->desc->out & AFMT_BIGENDIAN)
|
|
afmtstr_swap_endian(fmtstr);
|
|
if (!(c->feeder->desc->out & (AFMT_A_LAW | AFMT_MU_LAW)) &&
|
|
!(c->feeder->desc->out & AFMT_SIGNED))
|
|
afmtstr_swap_sign(fmtstr);
|
|
desc.in = afmtstr2afmt(NULL, fmtstr, AFMTSTR_MONO_RETURN);
|
|
if (desc.in == 0)
|
|
desc.in = AFMT_S16_LE;
|
|
/* feeder_volume need stereo processing */
|
|
if (type == FEEDER_VOLUME ||
|
|
c->feeder->desc->out & AFMT_STEREO)
|
|
desc.in |= AFMT_STEREO;
|
|
desc.out = desc.in;
|
|
} else if (type == FEEDER_SWAPLR) {
|
|
desc.in = c->feeder->desc->out;
|
|
desc.in |= AFMT_STEREO;
|
|
desc.out = desc.in;
|
|
}
|
|
|
|
fc = feeder_getclass(&desc);
|
|
DEB(printf("got %p\n", fc));
|
|
if (fc == NULL) {
|
|
DEB(printf("can't find required feeder type %d\n", type));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
if (desc.in == 0 || desc.out == 0)
|
|
desc = *fc->desc;
|
|
|
|
DEB(printf("build fmtchain from 0x%08x to 0x%08x: ", c->feeder->desc->out, fc->desc->in));
|
|
tmp[0] = desc.in;
|
|
tmp[1] = 0;
|
|
if (chn_fmtchain(c, tmp) == 0) {
|
|
DEB(printf("failed\n"));
|
|
|
|
return ENODEV;
|
|
}
|
|
DEB(printf("ok\n"));
|
|
|
|
err = chn_addfeeder(c, fc, &desc);
|
|
if (err) {
|
|
DEB(printf("can't add feeder %p, output 0x%x, err %d\n", fc, fc->desc->out, err));
|
|
|
|
return err;
|
|
}
|
|
DEB(printf("added feeder %p, output 0x%x\n", fc, c->feeder->desc->out));
|
|
}
|
|
}
|
|
|
|
if (c->direction == PCMDIR_REC) {
|
|
tmp[0] = c->format;
|
|
tmp[1] = 0;
|
|
hwfmt = chn_fmtchain(c, tmp);
|
|
} else
|
|
hwfmt = chn_fmtchain(c, fmtlist);
|
|
|
|
if (hwfmt == 0 || !fmtvalid(hwfmt, fmtlist)) {
|
|
DEB(printf("Invalid hardware format: 0x%08x\n", hwfmt));
|
|
return ENODEV;
|
|
} else if (c->direction == PCMDIR_REC && !CHN_EMPTY(c, children)) {
|
|
/*
|
|
* Kind of awkward. This whole "MIXER" concept need a
|
|
* rethinking, I guess :) . Recording is the inverse
|
|
* of Playback, which is why we push mixer vchan down here.
|
|
*/
|
|
if (c->flags & CHN_F_HAS_VCHAN) {
|
|
desc.type = FEEDER_MIXER;
|
|
desc.in = c->format;
|
|
} else
|
|
return EOPNOTSUPP;
|
|
desc.out = c->format;
|
|
desc.flags = 0;
|
|
fc = feeder_getclass(&desc);
|
|
if (fc == NULL)
|
|
return EOPNOTSUPP;
|
|
|
|
err = chn_addfeeder(c, fc, &desc);
|
|
if (err != 0)
|
|
return err;
|
|
}
|
|
|
|
sndbuf_setfmt(c->bufhard, hwfmt);
|
|
|
|
if ((flags & (1 << FEEDER_VOLUME))) {
|
|
u_int32_t parent;
|
|
int vol, left, right;
|
|
|
|
CHN_UNLOCK(c);
|
|
vol = mix_get(m, SOUND_MIXER_PCM);
|
|
if (vol == -1) {
|
|
device_printf(c->dev,
|
|
"Soft PCM Volume: Failed to read default value\n");
|
|
vol = 100 | (100 << 8);
|
|
}
|
|
left = vol & 0x7f;
|
|
right = (vol >> 8) & 0x7f;
|
|
parent = mix_getparent(m, SOUND_MIXER_PCM);
|
|
if (parent != SOUND_MIXER_NONE) {
|
|
vol = mix_get(m, parent);
|
|
if (vol == -1) {
|
|
device_printf(c->dev,
|
|
"Soft Volume: Failed to read parent "
|
|
"default value\n");
|
|
vol = 100 | (100 << 8);
|
|
}
|
|
left = (left * (vol & 0x7f)) / 100;
|
|
right = (right * ((vol >> 8) & 0x7f)) / 100;
|
|
}
|
|
CHN_LOCK(c);
|
|
chn_setvolume(c, left, right);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
chn_notify(struct pcm_channel *c, u_int32_t flags)
|
|
{
|
|
int err, run, nrun;
|
|
|
|
CHN_LOCKASSERT(c);
|
|
|
|
if (CHN_EMPTY(c, children))
|
|
return (ENODEV);
|
|
|
|
err = 0;
|
|
|
|
/*
|
|
* If the hwchan is running, we can't change its rate, format or
|
|
* blocksize
|
|
*/
|
|
run = (CHN_STARTED(c)) ? 1 : 0;
|
|
if (run)
|
|
flags &= CHN_N_VOLUME | CHN_N_TRIGGER;
|
|
|
|
if (flags & CHN_N_RATE) {
|
|
/* XXX I'll make good use of this someday. */
|
|
}
|
|
if (flags & CHN_N_FORMAT) {
|
|
/* XXX I'll make good use of this someday. */
|
|
}
|
|
if (flags & CHN_N_VOLUME) {
|
|
/* XXX I'll make good use of this someday. */
|
|
}
|
|
if (flags & CHN_N_BLOCKSIZE) {
|
|
/*
|
|
* Set to default latency profile
|
|
*/
|
|
chn_setlatency(c, chn_latency);
|
|
}
|
|
if (flags & CHN_N_TRIGGER) {
|
|
nrun = CHN_EMPTY(c, children.busy) ? 0 : 1;
|
|
if (nrun && !run)
|
|
err = chn_start(c, 1);
|
|
if (!nrun && run)
|
|
chn_abort(c);
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
/**
|
|
* @brief Fetch array of supported discrete sample rates
|
|
*
|
|
* Wrapper for CHANNEL_GETRATES. Please see channel_if.m:getrates() for
|
|
* detailed information.
|
|
*
|
|
* @note If the operation isn't supported, this function will just return 0
|
|
* (no rates in the array), and *rates will be set to NULL. Callers
|
|
* should examine rates @b only if this function returns non-zero.
|
|
*
|
|
* @param c pcm channel to examine
|
|
* @param rates pointer to array of integers; rate table will be recorded here
|
|
*
|
|
* @return number of rates in the array pointed to be @c rates
|
|
*/
|
|
int
|
|
chn_getrates(struct pcm_channel *c, int **rates)
|
|
{
|
|
KASSERT(rates != NULL, ("rates is null"));
|
|
CHN_LOCKASSERT(c);
|
|
return CHANNEL_GETRATES(c->methods, c->devinfo, rates);
|
|
}
|
|
|
|
/**
|
|
* @brief Remove channel from a sync group, if there is one.
|
|
*
|
|
* This function is initially intended for the following conditions:
|
|
* - Starting a syncgroup (@c SNDCTL_DSP_SYNCSTART ioctl)
|
|
* - Closing a device. (A channel can't be destroyed if it's still in use.)
|
|
*
|
|
* @note Before calling this function, the syncgroup list mutex must be
|
|
* held. (Consider pcm_channel::sm protected by the SG list mutex
|
|
* whether @c c is locked or not.)
|
|
*
|
|
* @param c channel device to be started or closed
|
|
* @returns If this channel was the only member of a group, the group ID
|
|
* is returned to the caller so that the caller can release it
|
|
* via free_unr() after giving up the syncgroup lock. Else it
|
|
* returns 0.
|
|
*/
|
|
int
|
|
chn_syncdestroy(struct pcm_channel *c)
|
|
{
|
|
struct pcmchan_syncmember *sm;
|
|
struct pcmchan_syncgroup *sg;
|
|
int sg_id;
|
|
|
|
sg_id = 0;
|
|
|
|
PCM_SG_LOCKASSERT(MA_OWNED);
|
|
|
|
if (c->sm != NULL) {
|
|
sm = c->sm;
|
|
sg = sm->parent;
|
|
c->sm = NULL;
|
|
|
|
KASSERT(sg != NULL, ("syncmember has null parent"));
|
|
|
|
SLIST_REMOVE(&sg->members, sm, pcmchan_syncmember, link);
|
|
free(sm, M_DEVBUF);
|
|
|
|
if (SLIST_EMPTY(&sg->members)) {
|
|
SLIST_REMOVE(&snd_pcm_syncgroups, sg, pcmchan_syncgroup, link);
|
|
sg_id = sg->id;
|
|
free(sg, M_DEVBUF);
|
|
}
|
|
}
|
|
|
|
return sg_id;
|
|
}
|
|
|
|
void
|
|
chn_lock(struct pcm_channel *c)
|
|
{
|
|
CHN_LOCK(c);
|
|
}
|
|
|
|
void
|
|
chn_unlock(struct pcm_channel *c)
|
|
{
|
|
CHN_UNLOCK(c);
|
|
}
|
|
|
|
#ifdef OSSV4_EXPERIMENT
|
|
int
|
|
chn_getpeaks(struct pcm_channel *c, int *lpeak, int *rpeak)
|
|
{
|
|
CHN_LOCKASSERT(c);
|
|
return CHANNEL_GETPEAKS(c->methods, c->devinfo, lpeak, rpeak);
|
|
}
|
|
#endif
|