From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- sound/core/oss/pcm_plugin.c | 781 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 781 insertions(+) create mode 100644 sound/core/oss/pcm_plugin.c (limited to 'sound/core/oss/pcm_plugin.c') diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c new file mode 100644 index 000000000..82e180c77 --- /dev/null +++ b/sound/core/oss/pcm_plugin.c @@ -0,0 +1,781 @@ +/* + * PCM Plug-In shared (kernel/library) code + * Copyright (c) 1999 by Jaroslav Kysela + * Copyright (c) 2000 by Abramo Bagnara + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Library General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#if 0 +#define PLUGIN_DEBUG +#endif + +#include +#include +#include +#include +#include +#include +#include "pcm_plugin.h" + +#define snd_pcm_plug_first(plug) ((plug)->runtime->oss.plugin_first) +#define snd_pcm_plug_last(plug) ((plug)->runtime->oss.plugin_last) + +/* + * because some cards might have rates "very close", we ignore + * all "resampling" requests within +-5% + */ +static int rate_match(unsigned int src_rate, unsigned int dst_rate) +{ + unsigned int low = (src_rate * 95) / 100; + unsigned int high = (src_rate * 105) / 100; + return dst_rate >= low && dst_rate <= high; +} + +static int snd_pcm_plugin_alloc(struct snd_pcm_plugin *plugin, snd_pcm_uframes_t frames) +{ + struct snd_pcm_plugin_format *format; + ssize_t width; + size_t size; + unsigned int channel; + struct snd_pcm_plugin_channel *c; + + if (plugin->stream == SNDRV_PCM_STREAM_PLAYBACK) { + format = &plugin->src_format; + } else { + format = &plugin->dst_format; + } + width = snd_pcm_format_physical_width(format->format); + if (width < 0) + return width; + size = array3_size(frames, format->channels, width); + /* check for too large period size once again */ + if (size > 1024 * 1024) + return -ENOMEM; + if (snd_BUG_ON(size % 8)) + return -ENXIO; + size /= 8; + if (plugin->buf_frames < frames) { + kvfree(plugin->buf); + plugin->buf = kvzalloc(size, GFP_KERNEL); + plugin->buf_frames = frames; + } + if (!plugin->buf) { + plugin->buf_frames = 0; + return -ENOMEM; + } + c = plugin->buf_channels; + if (plugin->access == SNDRV_PCM_ACCESS_RW_INTERLEAVED) { + for (channel = 0; channel < format->channels; channel++, c++) { + c->frames = frames; + c->enabled = 1; + c->wanted = 0; + c->area.addr = plugin->buf; + c->area.first = channel * width; + c->area.step = format->channels * width; + } + } else if (plugin->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED) { + if (snd_BUG_ON(size % format->channels)) + return -EINVAL; + size /= format->channels; + for (channel = 0; channel < format->channels; channel++, c++) { + c->frames = frames; + c->enabled = 1; + c->wanted = 0; + c->area.addr = plugin->buf + (channel * size); + c->area.first = 0; + c->area.step = width; + } + } else + return -EINVAL; + return 0; +} + +int snd_pcm_plug_alloc(struct snd_pcm_substream *plug, snd_pcm_uframes_t frames) +{ + int err; + if (snd_BUG_ON(!snd_pcm_plug_first(plug))) + return -ENXIO; + if (snd_pcm_plug_stream(plug) == SNDRV_PCM_STREAM_PLAYBACK) { + struct snd_pcm_plugin *plugin = snd_pcm_plug_first(plug); + while (plugin->next) { + if (plugin->dst_frames) + frames = plugin->dst_frames(plugin, frames); + if ((snd_pcm_sframes_t)frames <= 0) + return -ENXIO; + plugin = plugin->next; + err = snd_pcm_plugin_alloc(plugin, frames); + if (err < 0) + return err; + } + } else { + struct snd_pcm_plugin *plugin = snd_pcm_plug_last(plug); + while (plugin->prev) { + if (plugin->src_frames) + frames = plugin->src_frames(plugin, frames); + if ((snd_pcm_sframes_t)frames <= 0) + return -ENXIO; + plugin = plugin->prev; + err = snd_pcm_plugin_alloc(plugin, frames); + if (err < 0) + return err; + } + } + return 0; +} + + +snd_pcm_sframes_t snd_pcm_plugin_client_channels(struct snd_pcm_plugin *plugin, + snd_pcm_uframes_t frames, + struct snd_pcm_plugin_channel **channels) +{ + *channels = plugin->buf_channels; + return frames; +} + +int snd_pcm_plugin_build(struct snd_pcm_substream *plug, + const char *name, + struct snd_pcm_plugin_format *src_format, + struct snd_pcm_plugin_format *dst_format, + size_t extra, + struct snd_pcm_plugin **ret) +{ + struct snd_pcm_plugin *plugin; + unsigned int channels; + + if (snd_BUG_ON(!plug)) + return -ENXIO; + if (snd_BUG_ON(!src_format || !dst_format)) + return -ENXIO; + plugin = kzalloc(sizeof(*plugin) + extra, GFP_KERNEL); + if (plugin == NULL) + return -ENOMEM; + plugin->name = name; + plugin->plug = plug; + plugin->stream = snd_pcm_plug_stream(plug); + plugin->access = SNDRV_PCM_ACCESS_RW_INTERLEAVED; + plugin->src_format = *src_format; + plugin->src_width = snd_pcm_format_physical_width(src_format->format); + snd_BUG_ON(plugin->src_width <= 0); + plugin->dst_format = *dst_format; + plugin->dst_width = snd_pcm_format_physical_width(dst_format->format); + snd_BUG_ON(plugin->dst_width <= 0); + if (plugin->stream == SNDRV_PCM_STREAM_PLAYBACK) + channels = src_format->channels; + else + channels = dst_format->channels; + plugin->buf_channels = kcalloc(channels, sizeof(*plugin->buf_channels), GFP_KERNEL); + if (plugin->buf_channels == NULL) { + snd_pcm_plugin_free(plugin); + return -ENOMEM; + } + plugin->client_channels = snd_pcm_plugin_client_channels; + *ret = plugin; + return 0; +} + +int snd_pcm_plugin_free(struct snd_pcm_plugin *plugin) +{ + if (! plugin) + return 0; + if (plugin->private_free) + plugin->private_free(plugin); + kfree(plugin->buf_channels); + kvfree(plugin->buf); + kfree(plugin); + return 0; +} + +static snd_pcm_sframes_t calc_dst_frames(struct snd_pcm_substream *plug, + snd_pcm_sframes_t frames, + bool check_size) +{ + struct snd_pcm_plugin *plugin, *plugin_next; + + plugin = snd_pcm_plug_first(plug); + while (plugin && frames > 0) { + plugin_next = plugin->next; + if (check_size && plugin->buf_frames && + frames > plugin->buf_frames) + frames = plugin->buf_frames; + if (plugin->dst_frames) { + frames = plugin->dst_frames(plugin, frames); + if (frames < 0) + return frames; + } + plugin = plugin_next; + } + return frames; +} + +static snd_pcm_sframes_t calc_src_frames(struct snd_pcm_substream *plug, + snd_pcm_sframes_t frames, + bool check_size) +{ + struct snd_pcm_plugin *plugin, *plugin_prev; + + plugin = snd_pcm_plug_last(plug); + while (plugin && frames > 0) { + plugin_prev = plugin->prev; + if (plugin->src_frames) { + frames = plugin->src_frames(plugin, frames); + if (frames < 0) + return frames; + } + if (check_size && plugin->buf_frames && + frames > plugin->buf_frames) + frames = plugin->buf_frames; + plugin = plugin_prev; + } + return frames; +} + +snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *plug, snd_pcm_uframes_t drv_frames) +{ + if (snd_BUG_ON(!plug)) + return -ENXIO; + switch (snd_pcm_plug_stream(plug)) { + case SNDRV_PCM_STREAM_PLAYBACK: + return calc_src_frames(plug, drv_frames, false); + case SNDRV_PCM_STREAM_CAPTURE: + return calc_dst_frames(plug, drv_frames, false); + default: + snd_BUG(); + return -EINVAL; + } +} + +snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *plug, snd_pcm_uframes_t clt_frames) +{ + if (snd_BUG_ON(!plug)) + return -ENXIO; + switch (snd_pcm_plug_stream(plug)) { + case SNDRV_PCM_STREAM_PLAYBACK: + return calc_dst_frames(plug, clt_frames, false); + case SNDRV_PCM_STREAM_CAPTURE: + return calc_src_frames(plug, clt_frames, false); + default: + snd_BUG(); + return -EINVAL; + } +} + +static int snd_pcm_plug_formats(const struct snd_mask *mask, + snd_pcm_format_t format) +{ + struct snd_mask formats = *mask; + u64 linfmts = (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 | + SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_U16_BE | SNDRV_PCM_FMTBIT_S16_BE | + SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_S24_LE | + SNDRV_PCM_FMTBIT_U24_BE | SNDRV_PCM_FMTBIT_S24_BE | + SNDRV_PCM_FMTBIT_U24_3LE | SNDRV_PCM_FMTBIT_S24_3LE | + SNDRV_PCM_FMTBIT_U24_3BE | SNDRV_PCM_FMTBIT_S24_3BE | + SNDRV_PCM_FMTBIT_U32_LE | SNDRV_PCM_FMTBIT_S32_LE | + SNDRV_PCM_FMTBIT_U32_BE | SNDRV_PCM_FMTBIT_S32_BE); + snd_mask_set(&formats, (__force int)SNDRV_PCM_FORMAT_MU_LAW); + + if (formats.bits[0] & lower_32_bits(linfmts)) + formats.bits[0] |= lower_32_bits(linfmts); + if (formats.bits[1] & upper_32_bits(linfmts)) + formats.bits[1] |= upper_32_bits(linfmts); + return snd_mask_test(&formats, (__force int)format); +} + +static const snd_pcm_format_t preferred_formats[] = { + SNDRV_PCM_FORMAT_S16_LE, + SNDRV_PCM_FORMAT_S16_BE, + SNDRV_PCM_FORMAT_U16_LE, + SNDRV_PCM_FORMAT_U16_BE, + SNDRV_PCM_FORMAT_S24_3LE, + SNDRV_PCM_FORMAT_S24_3BE, + SNDRV_PCM_FORMAT_U24_3LE, + SNDRV_PCM_FORMAT_U24_3BE, + SNDRV_PCM_FORMAT_S24_LE, + SNDRV_PCM_FORMAT_S24_BE, + SNDRV_PCM_FORMAT_U24_LE, + SNDRV_PCM_FORMAT_U24_BE, + SNDRV_PCM_FORMAT_S32_LE, + SNDRV_PCM_FORMAT_S32_BE, + SNDRV_PCM_FORMAT_U32_LE, + SNDRV_PCM_FORMAT_U32_BE, + SNDRV_PCM_FORMAT_S8, + SNDRV_PCM_FORMAT_U8 +}; + +snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format, + const struct snd_mask *format_mask) +{ + int i; + + if (snd_mask_test(format_mask, (__force int)format)) + return format; + if (!snd_pcm_plug_formats(format_mask, format)) + return (__force snd_pcm_format_t)-EINVAL; + if (snd_pcm_format_linear(format)) { + unsigned int width = snd_pcm_format_width(format); + int unsignd = snd_pcm_format_unsigned(format) > 0; + int big = snd_pcm_format_big_endian(format) > 0; + unsigned int badness, best = -1; + snd_pcm_format_t best_format = (__force snd_pcm_format_t)-1; + for (i = 0; i < ARRAY_SIZE(preferred_formats); i++) { + snd_pcm_format_t f = preferred_formats[i]; + unsigned int w; + if (!snd_mask_test(format_mask, (__force int)f)) + continue; + w = snd_pcm_format_width(f); + if (w >= width) + badness = w - width; + else + badness = width - w + 32; + badness += snd_pcm_format_unsigned(f) != unsignd; + badness += snd_pcm_format_big_endian(f) != big; + if (badness < best) { + best_format = f; + best = badness; + } + } + if ((__force int)best_format >= 0) + return best_format; + else + return (__force snd_pcm_format_t)-EINVAL; + } else { + switch (format) { + case SNDRV_PCM_FORMAT_MU_LAW: + for (i = 0; i < ARRAY_SIZE(preferred_formats); ++i) { + snd_pcm_format_t format1 = preferred_formats[i]; + if (snd_mask_test(format_mask, (__force int)format1)) + return format1; + } + fallthrough; + default: + return (__force snd_pcm_format_t)-EINVAL; + } + } +} + +int snd_pcm_plug_format_plugins(struct snd_pcm_substream *plug, + struct snd_pcm_hw_params *params, + struct snd_pcm_hw_params *slave_params) +{ + struct snd_pcm_plugin_format tmpformat; + struct snd_pcm_plugin_format dstformat; + struct snd_pcm_plugin_format srcformat; + snd_pcm_access_t src_access, dst_access; + struct snd_pcm_plugin *plugin = NULL; + int err; + int stream = snd_pcm_plug_stream(plug); + int slave_interleaved = (params_channels(slave_params) == 1 || + params_access(slave_params) == SNDRV_PCM_ACCESS_RW_INTERLEAVED); + + switch (stream) { + case SNDRV_PCM_STREAM_PLAYBACK: + dstformat.format = params_format(slave_params); + dstformat.rate = params_rate(slave_params); + dstformat.channels = params_channels(slave_params); + srcformat.format = params_format(params); + srcformat.rate = params_rate(params); + srcformat.channels = params_channels(params); + src_access = SNDRV_PCM_ACCESS_RW_INTERLEAVED; + dst_access = (slave_interleaved ? SNDRV_PCM_ACCESS_RW_INTERLEAVED : + SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); + break; + case SNDRV_PCM_STREAM_CAPTURE: + dstformat.format = params_format(params); + dstformat.rate = params_rate(params); + dstformat.channels = params_channels(params); + srcformat.format = params_format(slave_params); + srcformat.rate = params_rate(slave_params); + srcformat.channels = params_channels(slave_params); + src_access = (slave_interleaved ? SNDRV_PCM_ACCESS_RW_INTERLEAVED : + SNDRV_PCM_ACCESS_RW_NONINTERLEAVED); + dst_access = SNDRV_PCM_ACCESS_RW_INTERLEAVED; + break; + default: + snd_BUG(); + return -EINVAL; + } + tmpformat = srcformat; + + pdprintf("srcformat: format=%i, rate=%i, channels=%i\n", + srcformat.format, + srcformat.rate, + srcformat.channels); + pdprintf("dstformat: format=%i, rate=%i, channels=%i\n", + dstformat.format, + dstformat.rate, + dstformat.channels); + + /* Format change (linearization) */ + if (! rate_match(srcformat.rate, dstformat.rate) && + ! snd_pcm_format_linear(srcformat.format)) { + if (srcformat.format != SNDRV_PCM_FORMAT_MU_LAW) + return -EINVAL; + tmpformat.format = SNDRV_PCM_FORMAT_S16; + err = snd_pcm_plugin_build_mulaw(plug, + &srcformat, &tmpformat, + &plugin); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* channels reduction */ + if (srcformat.channels > dstformat.channels) { + tmpformat.channels = dstformat.channels; + err = snd_pcm_plugin_build_route(plug, &srcformat, &tmpformat, &plugin); + pdprintf("channels reduction: src=%i, dst=%i returns %i\n", srcformat.channels, tmpformat.channels, err); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* rate resampling */ + if (!rate_match(srcformat.rate, dstformat.rate)) { + if (srcformat.format != SNDRV_PCM_FORMAT_S16) { + /* convert to S16 for resampling */ + tmpformat.format = SNDRV_PCM_FORMAT_S16; + err = snd_pcm_plugin_build_linear(plug, + &srcformat, &tmpformat, + &plugin); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + tmpformat.rate = dstformat.rate; + err = snd_pcm_plugin_build_rate(plug, + &srcformat, &tmpformat, + &plugin); + pdprintf("rate down resampling: src=%i, dst=%i returns %i\n", srcformat.rate, tmpformat.rate, err); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* format change */ + if (srcformat.format != dstformat.format) { + tmpformat.format = dstformat.format; + if (srcformat.format == SNDRV_PCM_FORMAT_MU_LAW || + tmpformat.format == SNDRV_PCM_FORMAT_MU_LAW) { + err = snd_pcm_plugin_build_mulaw(plug, + &srcformat, &tmpformat, + &plugin); + } + else if (snd_pcm_format_linear(srcformat.format) && + snd_pcm_format_linear(tmpformat.format)) { + err = snd_pcm_plugin_build_linear(plug, + &srcformat, &tmpformat, + &plugin); + } + else + return -EINVAL; + pdprintf("format change: src=%i, dst=%i returns %i\n", srcformat.format, tmpformat.format, err); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* channels extension */ + if (srcformat.channels < dstformat.channels) { + tmpformat.channels = dstformat.channels; + err = snd_pcm_plugin_build_route(plug, &srcformat, &tmpformat, &plugin); + pdprintf("channels extension: src=%i, dst=%i returns %i\n", srcformat.channels, tmpformat.channels, err); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + srcformat = tmpformat; + src_access = dst_access; + } + + /* de-interleave */ + if (src_access != dst_access) { + err = snd_pcm_plugin_build_copy(plug, + &srcformat, + &tmpformat, + &plugin); + pdprintf("interleave change (copy: returns %i)\n", err); + if (err < 0) + return err; + err = snd_pcm_plugin_append(plugin); + if (err < 0) { + snd_pcm_plugin_free(plugin); + return err; + } + } + + return 0; +} + +snd_pcm_sframes_t snd_pcm_plug_client_channels_buf(struct snd_pcm_substream *plug, + char *buf, + snd_pcm_uframes_t count, + struct snd_pcm_plugin_channel **channels) +{ + struct snd_pcm_plugin *plugin; + struct snd_pcm_plugin_channel *v; + struct snd_pcm_plugin_format *format; + int width, nchannels, channel; + int stream = snd_pcm_plug_stream(plug); + + if (snd_BUG_ON(!buf)) + return -ENXIO; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) { + plugin = snd_pcm_plug_first(plug); + format = &plugin->src_format; + } else { + plugin = snd_pcm_plug_last(plug); + format = &plugin->dst_format; + } + v = plugin->buf_channels; + *channels = v; + width = snd_pcm_format_physical_width(format->format); + if (width < 0) + return width; + nchannels = format->channels; + if (snd_BUG_ON(plugin->access != SNDRV_PCM_ACCESS_RW_INTERLEAVED && + format->channels > 1)) + return -ENXIO; + for (channel = 0; channel < nchannels; channel++, v++) { + v->frames = count; + v->enabled = 1; + v->wanted = (stream == SNDRV_PCM_STREAM_CAPTURE); + v->area.addr = buf; + v->area.first = channel * width; + v->area.step = nchannels * width; + } + return count; +} + +snd_pcm_sframes_t snd_pcm_plug_write_transfer(struct snd_pcm_substream *plug, struct snd_pcm_plugin_channel *src_channels, snd_pcm_uframes_t size) +{ + struct snd_pcm_plugin *plugin, *next; + struct snd_pcm_plugin_channel *dst_channels; + int err; + snd_pcm_sframes_t frames = size; + + plugin = snd_pcm_plug_first(plug); + while (plugin) { + if (frames <= 0) + return frames; + next = plugin->next; + if (next) { + snd_pcm_sframes_t frames1 = frames; + if (plugin->dst_frames) { + frames1 = plugin->dst_frames(plugin, frames); + if (frames1 <= 0) + return frames1; + } + err = next->client_channels(next, frames1, &dst_channels); + if (err < 0) + return err; + if (err != frames1) { + frames = err; + if (plugin->src_frames) { + frames = plugin->src_frames(plugin, frames1); + if (frames <= 0) + return frames; + } + } + } else + dst_channels = NULL; + pdprintf("write plugin: %s, %li\n", plugin->name, frames); + frames = plugin->transfer(plugin, src_channels, dst_channels, frames); + if (frames < 0) + return frames; + src_channels = dst_channels; + plugin = next; + } + return calc_src_frames(plug, frames, true); +} + +snd_pcm_sframes_t snd_pcm_plug_read_transfer(struct snd_pcm_substream *plug, struct snd_pcm_plugin_channel *dst_channels_final, snd_pcm_uframes_t size) +{ + struct snd_pcm_plugin *plugin, *next; + struct snd_pcm_plugin_channel *src_channels, *dst_channels; + snd_pcm_sframes_t frames = size; + int err; + + frames = calc_src_frames(plug, frames, true); + if (frames < 0) + return frames; + + src_channels = NULL; + plugin = snd_pcm_plug_first(plug); + while (plugin && frames > 0) { + next = plugin->next; + if (next) { + err = plugin->client_channels(plugin, frames, &dst_channels); + if (err < 0) + return err; + frames = err; + } else { + dst_channels = dst_channels_final; + } + pdprintf("read plugin: %s, %li\n", plugin->name, frames); + frames = plugin->transfer(plugin, src_channels, dst_channels, frames); + if (frames < 0) + return frames; + plugin = next; + src_channels = dst_channels; + } + return frames; +} + +int snd_pcm_area_silence(const struct snd_pcm_channel_area *dst_area, size_t dst_offset, + size_t samples, snd_pcm_format_t format) +{ + /* FIXME: sub byte resolution and odd dst_offset */ + unsigned char *dst; + unsigned int dst_step; + int width; + const unsigned char *silence; + if (!dst_area->addr) + return 0; + dst = dst_area->addr + (dst_area->first + dst_area->step * dst_offset) / 8; + width = snd_pcm_format_physical_width(format); + if (width <= 0) + return -EINVAL; + if (dst_area->step == (unsigned int) width && width >= 8) + return snd_pcm_format_set_silence(format, dst, samples); + silence = snd_pcm_format_silence_64(format); + if (! silence) + return -EINVAL; + dst_step = dst_area->step / 8; + if (width == 4) { + /* Ima ADPCM */ + int dstbit = dst_area->first % 8; + int dstbit_step = dst_area->step % 8; + while (samples-- > 0) { + if (dstbit) + *dst &= 0xf0; + else + *dst &= 0x0f; + dst += dst_step; + dstbit += dstbit_step; + if (dstbit == 8) { + dst++; + dstbit = 0; + } + } + } else { + width /= 8; + while (samples-- > 0) { + memcpy(dst, silence, width); + dst += dst_step; + } + } + return 0; +} + +int snd_pcm_area_copy(const struct snd_pcm_channel_area *src_area, size_t src_offset, + const struct snd_pcm_channel_area *dst_area, size_t dst_offset, + size_t samples, snd_pcm_format_t format) +{ + /* FIXME: sub byte resolution and odd dst_offset */ + char *src, *dst; + int width; + int src_step, dst_step; + src = src_area->addr + (src_area->first + src_area->step * src_offset) / 8; + if (!src_area->addr) + return snd_pcm_area_silence(dst_area, dst_offset, samples, format); + dst = dst_area->addr + (dst_area->first + dst_area->step * dst_offset) / 8; + if (!dst_area->addr) + return 0; + width = snd_pcm_format_physical_width(format); + if (width <= 0) + return -EINVAL; + if (src_area->step == (unsigned int) width && + dst_area->step == (unsigned int) width && width >= 8) { + size_t bytes = samples * width / 8; + memcpy(dst, src, bytes); + return 0; + } + src_step = src_area->step / 8; + dst_step = dst_area->step / 8; + if (width == 4) { + /* Ima ADPCM */ + int srcbit = src_area->first % 8; + int srcbit_step = src_area->step % 8; + int dstbit = dst_area->first % 8; + int dstbit_step = dst_area->step % 8; + while (samples-- > 0) { + unsigned char srcval; + if (srcbit) + srcval = *src & 0x0f; + else + srcval = (*src & 0xf0) >> 4; + if (dstbit) + *dst = (*dst & 0xf0) | srcval; + else + *dst = (*dst & 0x0f) | (srcval << 4); + src += src_step; + srcbit += srcbit_step; + if (srcbit == 8) { + src++; + srcbit = 0; + } + dst += dst_step; + dstbit += dstbit_step; + if (dstbit == 8) { + dst++; + dstbit = 0; + } + } + } else { + width /= 8; + while (samples-- > 0) { + memcpy(dst, src, width); + src += src_step; + dst += dst_step; + } + } + return 0; +} -- cgit v1.2.3