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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu 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 general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
169 lines
6.7 KiB
C
169 lines
6.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __PCM_PLUGIN_H
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#define __PCM_PLUGIN_H
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/*
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* Digital Audio (Plugin interface) abstract layer
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*/
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#ifdef CONFIG_SND_PCM_OSS_PLUGINS
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#define snd_pcm_plug_stream(plug) ((plug)->stream)
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enum snd_pcm_plugin_action {
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INIT = 0,
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PREPARE = 1,
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};
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struct snd_pcm_channel_area {
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void *addr; /* base address of channel samples */
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unsigned int first; /* offset to first sample in bits */
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unsigned int step; /* samples distance in bits */
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};
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struct snd_pcm_plugin_channel {
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void *aptr; /* pointer to the allocated area */
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struct snd_pcm_channel_area area;
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snd_pcm_uframes_t frames; /* allocated frames */
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unsigned int enabled:1; /* channel need to be processed */
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unsigned int wanted:1; /* channel is wanted */
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};
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struct snd_pcm_plugin_format {
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snd_pcm_format_t format;
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unsigned int rate;
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unsigned int channels;
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};
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struct snd_pcm_plugin {
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const char *name; /* plug-in name */
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int stream;
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struct snd_pcm_plugin_format src_format; /* source format */
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struct snd_pcm_plugin_format dst_format; /* destination format */
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int src_width; /* sample width in bits */
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int dst_width; /* sample width in bits */
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snd_pcm_access_t access;
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snd_pcm_sframes_t (*src_frames)(struct snd_pcm_plugin *plugin, snd_pcm_uframes_t dst_frames);
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snd_pcm_sframes_t (*dst_frames)(struct snd_pcm_plugin *plugin, snd_pcm_uframes_t src_frames);
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snd_pcm_sframes_t (*client_channels)(struct snd_pcm_plugin *plugin,
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snd_pcm_uframes_t frames,
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struct snd_pcm_plugin_channel **channels);
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snd_pcm_sframes_t (*transfer)(struct snd_pcm_plugin *plugin,
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const struct snd_pcm_plugin_channel *src_channels,
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struct snd_pcm_plugin_channel *dst_channels,
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snd_pcm_uframes_t frames);
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int (*action)(struct snd_pcm_plugin *plugin,
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enum snd_pcm_plugin_action action,
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unsigned long data);
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struct snd_pcm_plugin *prev;
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struct snd_pcm_plugin *next;
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struct snd_pcm_substream *plug;
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void *private_data;
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void (*private_free)(struct snd_pcm_plugin *plugin);
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char *buf;
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snd_pcm_uframes_t buf_frames;
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struct snd_pcm_plugin_channel *buf_channels;
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char extra_data[0];
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};
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int snd_pcm_plugin_build(struct snd_pcm_substream *handle,
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const char *name,
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struct snd_pcm_plugin_format *src_format,
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struct snd_pcm_plugin_format *dst_format,
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size_t extra,
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struct snd_pcm_plugin **ret);
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int snd_pcm_plugin_free(struct snd_pcm_plugin *plugin);
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int snd_pcm_plugin_clear(struct snd_pcm_plugin **first);
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int snd_pcm_plug_alloc(struct snd_pcm_substream *plug, snd_pcm_uframes_t frames);
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snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t drv_size);
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snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t clt_size);
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#define FULL ROUTE_PLUGIN_RESOLUTION
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#define HALF ROUTE_PLUGIN_RESOLUTION / 2
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int snd_pcm_plugin_build_io(struct snd_pcm_substream *handle,
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struct snd_pcm_hw_params *params,
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struct snd_pcm_plugin **r_plugin);
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int snd_pcm_plugin_build_linear(struct snd_pcm_substream *handle,
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struct snd_pcm_plugin_format *src_format,
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struct snd_pcm_plugin_format *dst_format,
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struct snd_pcm_plugin **r_plugin);
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int snd_pcm_plugin_build_mulaw(struct snd_pcm_substream *handle,
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struct snd_pcm_plugin_format *src_format,
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struct snd_pcm_plugin_format *dst_format,
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struct snd_pcm_plugin **r_plugin);
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int snd_pcm_plugin_build_rate(struct snd_pcm_substream *handle,
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struct snd_pcm_plugin_format *src_format,
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struct snd_pcm_plugin_format *dst_format,
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struct snd_pcm_plugin **r_plugin);
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int snd_pcm_plugin_build_route(struct snd_pcm_substream *handle,
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struct snd_pcm_plugin_format *src_format,
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struct snd_pcm_plugin_format *dst_format,
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struct snd_pcm_plugin **r_plugin);
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int snd_pcm_plugin_build_copy(struct snd_pcm_substream *handle,
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struct snd_pcm_plugin_format *src_format,
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struct snd_pcm_plugin_format *dst_format,
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struct snd_pcm_plugin **r_plugin);
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int snd_pcm_plug_format_plugins(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_pcm_hw_params *slave_params);
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snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format,
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const struct snd_mask *format_mask);
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int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin);
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snd_pcm_sframes_t snd_pcm_plug_write_transfer(struct snd_pcm_substream *handle,
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struct snd_pcm_plugin_channel *src_channels,
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snd_pcm_uframes_t size);
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snd_pcm_sframes_t snd_pcm_plug_read_transfer(struct snd_pcm_substream *handle,
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struct snd_pcm_plugin_channel *dst_channels_final,
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snd_pcm_uframes_t size);
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snd_pcm_sframes_t snd_pcm_plug_client_channels_buf(struct snd_pcm_substream *handle,
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char *buf, snd_pcm_uframes_t count,
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struct snd_pcm_plugin_channel **channels);
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snd_pcm_sframes_t snd_pcm_plugin_client_channels(struct snd_pcm_plugin *plugin,
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snd_pcm_uframes_t frames,
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struct snd_pcm_plugin_channel **channels);
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int snd_pcm_area_silence(const struct snd_pcm_channel_area *dst_channel,
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size_t dst_offset,
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size_t samples, snd_pcm_format_t format);
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int snd_pcm_area_copy(const struct snd_pcm_channel_area *src_channel,
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size_t src_offset,
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const struct snd_pcm_channel_area *dst_channel,
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size_t dst_offset,
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size_t samples, snd_pcm_format_t format);
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void *snd_pcm_plug_buf_alloc(struct snd_pcm_substream *plug, snd_pcm_uframes_t size);
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void snd_pcm_plug_buf_unlock(struct snd_pcm_substream *plug, void *ptr);
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snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream,
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const char *ptr, snd_pcm_uframes_t size,
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int in_kernel);
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snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream,
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char *ptr, snd_pcm_uframes_t size, int in_kernel);
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snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream,
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void **bufs, snd_pcm_uframes_t frames);
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snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream,
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void **bufs, snd_pcm_uframes_t frames);
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#else
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static inline snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t drv_size) { return drv_size; }
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static inline snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t clt_size) { return clt_size; }
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static inline int snd_pcm_plug_slave_format(int format, const struct snd_mask *format_mask) { return format; }
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#endif
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#ifdef PLUGIN_DEBUG
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#define pdprintf(fmt, args...) printk(KERN_DEBUG "plugin: " fmt, ##args)
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#else
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#define pdprintf(fmt, args...)
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#endif
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#endif /* __PCM_PLUGIN_H */
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