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/*
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* \file pcm/pcm_plug.c
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* \ingroup PCM_Plugins
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* \brief PCM Route & Volume Plugin Interface
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* \author Abramo Bagnara <abramo@alsa-project.org>
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* \date 2000-2001
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*/
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/*
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* PCM - Plug
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* Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
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*
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "pcm_local.h"
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#include "pcm_plugin.h"
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#ifndef PIC
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/* entry for static linking */
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const char *_snd_module_pcm_plug = "";
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#endif
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#ifndef DOC_HIDDEN
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enum snd_pcm_plug_route_policy {
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PLUG_ROUTE_POLICY_NONE,
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PLUG_ROUTE_POLICY_DEFAULT,
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PLUG_ROUTE_POLICY_COPY,
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PLUG_ROUTE_POLICY_AVERAGE,
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PLUG_ROUTE_POLICY_DUP,
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};
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typedef struct {
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snd_pcm_generic_t gen;
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snd_pcm_t *req_slave;
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snd_pcm_format_t sformat;
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int schannels;
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int srate;
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snd_config_t *rate_converter;
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enum snd_pcm_plug_route_policy route_policy;
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snd_pcm_route_ttable_entry_t *ttable;
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int ttable_ok;
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unsigned int tt_ssize, tt_cused, tt_sused;
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} snd_pcm_plug_t;
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#endif
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static int snd_pcm_plug_close(snd_pcm_t *pcm)
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{
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snd_pcm_plug_t *plug = pcm->private_data;
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int err, result = 0;
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free(plug->ttable);
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if (plug->rate_converter) {
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snd_config_delete(plug->rate_converter);
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plug->rate_converter = NULL;
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}
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assert(plug->gen.slave == plug->req_slave);
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if (plug->gen.close_slave) {
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snd_pcm_unlink_hw_ptr(pcm, plug->req_slave);
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snd_pcm_unlink_appl_ptr(pcm, plug->req_slave);
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err = snd_pcm_close(plug->req_slave);
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if (err < 0)
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result = err;
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}
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free(plug);
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return result;
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}
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static int snd_pcm_plug_info(snd_pcm_t *pcm, snd_pcm_info_t *info)
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{
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snd_pcm_plug_t *plug = pcm->private_data;
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snd_pcm_t *slave = plug->req_slave;
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int err;
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if ((err = snd_pcm_info(slave, info)) < 0)
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return err;
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return 0;
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}
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static const snd_pcm_format_t linear_preferred_formats[] = {
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#ifdef SND_LITTLE_ENDIAN
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SND_PCM_FORMAT_S16_LE,
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SND_PCM_FORMAT_U16_LE,
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SND_PCM_FORMAT_S16_BE,
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SND_PCM_FORMAT_U16_BE,
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#else
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SND_PCM_FORMAT_S16_BE,
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SND_PCM_FORMAT_U16_BE,
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SND_PCM_FORMAT_S16_LE,
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SND_PCM_FORMAT_U16_LE,
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#endif
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#ifdef SND_LITTLE_ENDIAN
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SND_PCM_FORMAT_S32_LE,
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SND_PCM_FORMAT_U32_LE,
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SND_PCM_FORMAT_S32_BE,
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SND_PCM_FORMAT_U32_BE,
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#else
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SND_PCM_FORMAT_S32_BE,
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SND_PCM_FORMAT_U32_BE,
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SND_PCM_FORMAT_S32_LE,
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SND_PCM_FORMAT_U32_LE,
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#endif
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SND_PCM_FORMAT_S8,
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SND_PCM_FORMAT_U8,
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#ifdef SND_LITTLE_ENDIAN
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SND_PCM_FORMAT_FLOAT_LE,
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SND_PCM_FORMAT_FLOAT64_LE,
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SND_PCM_FORMAT_FLOAT_BE,
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SND_PCM_FORMAT_FLOAT64_BE,
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#else
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SND_PCM_FORMAT_FLOAT_BE,
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SND_PCM_FORMAT_FLOAT64_BE,
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SND_PCM_FORMAT_FLOAT_LE,
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SND_PCM_FORMAT_FLOAT64_LE,
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#endif
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#ifdef SND_LITTLE_ENDIAN
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SND_PCM_FORMAT_S24_LE,
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SND_PCM_FORMAT_U24_LE,
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SND_PCM_FORMAT_S24_BE,
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SND_PCM_FORMAT_U24_BE,
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#else
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SND_PCM_FORMAT_S24_BE,
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SND_PCM_FORMAT_U24_BE,
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SND_PCM_FORMAT_S24_LE,
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SND_PCM_FORMAT_U24_LE,
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#endif
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#ifdef SND_LITTLE_ENDIAN
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SND_PCM_FORMAT_S20_LE,
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SND_PCM_FORMAT_U20_LE,
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SND_PCM_FORMAT_S20_BE,
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SND_PCM_FORMAT_U20_BE,
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#else
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SND_PCM_FORMAT_S20_BE,
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SND_PCM_FORMAT_U20_BE,
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SND_PCM_FORMAT_S20_LE,
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SND_PCM_FORMAT_U20_LE,
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#endif
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#ifdef SND_LITTLE_ENDIAN
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SND_PCM_FORMAT_S24_3LE,
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SND_PCM_FORMAT_U24_3LE,
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SND_PCM_FORMAT_S24_3BE,
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SND_PCM_FORMAT_U24_3BE,
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#else
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SND_PCM_FORMAT_S24_3BE,
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SND_PCM_FORMAT_U24_3BE,
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SND_PCM_FORMAT_S24_3LE,
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SND_PCM_FORMAT_U24_3LE,
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#endif
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#ifdef SND_LITTLE_ENDIAN
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SND_PCM_FORMAT_S20_3LE,
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SND_PCM_FORMAT_U20_3LE,
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SND_PCM_FORMAT_S20_3BE,
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SND_PCM_FORMAT_U20_3BE,
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#else
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SND_PCM_FORMAT_S20_3BE,
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SND_PCM_FORMAT_U20_3BE,
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SND_PCM_FORMAT_S20_3LE,
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SND_PCM_FORMAT_U20_3LE,
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#endif
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#ifdef SND_LITTLE_ENDIAN
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SND_PCM_FORMAT_S18_3LE,
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SND_PCM_FORMAT_U18_3LE,
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SND_PCM_FORMAT_S18_3BE,
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SND_PCM_FORMAT_U18_3BE,
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#else
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SND_PCM_FORMAT_S18_3BE,
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SND_PCM_FORMAT_U18_3BE,
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SND_PCM_FORMAT_S18_3LE,
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SND_PCM_FORMAT_U18_3LE,
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#endif
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};
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#if defined(BUILD_PCM_PLUGIN_MULAW) || \
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defined(BUILD_PCM_PLUGIN_ALAW) || \
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defined(BUILD_PCM_PLUGIN_ADPCM)
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#define BUILD_PCM_NONLINEAR
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#endif
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|
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#ifdef BUILD_PCM_NONLINEAR
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static const snd_pcm_format_t nonlinear_preferred_formats[] = {
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#ifdef BUILD_PCM_PLUGIN_MULAW
|
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SND_PCM_FORMAT_MU_LAW,
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#endif
|
|
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#ifdef BUILD_PCM_PLUGIN_ALAW
|
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SND_PCM_FORMAT_A_LAW,
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#endif
|
|
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#ifdef BUILD_PCM_PLUGIN_ADPCM
|
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SND_PCM_FORMAT_IMA_ADPCM,
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#endif
|
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};
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#endif
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|
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#ifdef BUILD_PCM_PLUGIN_LFLOAT
|
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static const snd_pcm_format_t float_preferred_formats[] = {
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#ifdef SND_LITTLE_ENDIAN
|
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SND_PCM_FORMAT_FLOAT_LE,
|
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SND_PCM_FORMAT_FLOAT64_LE,
|
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SND_PCM_FORMAT_FLOAT_BE,
|
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SND_PCM_FORMAT_FLOAT64_BE,
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|
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#else
|
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SND_PCM_FORMAT_FLOAT_BE,
|
|
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SND_PCM_FORMAT_FLOAT64_BE,
|
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SND_PCM_FORMAT_FLOAT_LE,
|
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SND_PCM_FORMAT_FLOAT64_LE,
|
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#endif
|
|
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};
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#endif
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|
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static const char linear_format_widths[32] = {
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0, 0, 0, 0, 0, 0, 0, 1,
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0, 0, 0, 0, 0, 0, 0, 1,
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0, 1, 0, 1, 0, 0, 0, 1,
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0, 0, 0, 0, 0, 0, 0, 1,
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};
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static int check_linear_format(const snd_pcm_format_mask_t *format_mask, int wid, int sgn, int ed)
|
|
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{
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|
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int e, s;
|
|
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if (! linear_format_widths[wid - 1])
|
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return SND_PCM_FORMAT_UNKNOWN;
|
|
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for (e = 0; e < 2; e++) {
|
|
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for (s = 0; s < 2; s++) {
|
|
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int pw = ((wid + 7) / 8) * 8;
|
|
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for (; pw <= 32; pw += 8) {
|
|
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db8eaa |
snd_pcm_format_t f;
|
|
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db8eaa |
f = snd_pcm_build_linear_format(wid, pw, sgn, ed);
|
|
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if (f != SND_PCM_FORMAT_UNKNOWN &&
|
|
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db8eaa |
snd_pcm_format_mask_test(format_mask, f))
|
|
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return f;
|
|
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db8eaa |
}
|
|
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sgn = !sgn;
|
|
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}
|
|
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ed = !ed;
|
|
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}
|
|
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return SND_PCM_FORMAT_UNKNOWN;
|
|
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db8eaa |
}
|
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db8eaa |
|
|
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static snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format, const snd_pcm_format_mask_t *format_mask)
|
|
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{
|
|
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db8eaa |
int w, w1, u, e;
|
|
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db8eaa |
snd_pcm_format_t f;
|
|
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db8eaa |
snd_pcm_format_mask_t lin = { SND_PCM_FMTBIT_LINEAR };
|
|
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db8eaa |
snd_pcm_format_mask_t fl = {
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_LFLOAT
|
|
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db8eaa |
SND_PCM_FMTBIT_FLOAT
|
|
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db8eaa |
#else
|
|
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db8eaa |
{ 0 }
|
|
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db8eaa |
#endif
|
|
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db8eaa |
};
|
|
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db8eaa |
if (snd_pcm_format_mask_test(format_mask, format))
|
|
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db8eaa |
return format;
|
|
Packit Service |
db8eaa |
if (!snd_pcm_format_mask_test(&lin, format) &&
|
|
Packit Service |
db8eaa |
!snd_pcm_format_mask_test(&fl, format)) {
|
|
Packit Service |
db8eaa |
unsigned int i;
|
|
Packit Service |
db8eaa |
switch (format) {
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_MULAW
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_MU_LAW:
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ALAW
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_A_LAW:
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ADPCM
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_IMA_ADPCM:
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
for (i = 0; i < sizeof(linear_preferred_formats) / sizeof(linear_preferred_formats[0]); ++i) {
|
|
Packit Service |
db8eaa |
snd_pcm_format_t f = linear_preferred_formats[i];
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_test(format_mask, f))
|
|
Packit Service |
db8eaa |
return f;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
/* Fall through */
|
|
Packit Service |
db8eaa |
default:
|
|
Packit Service |
db8eaa |
return SND_PCM_FORMAT_UNKNOWN;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
snd_mask_intersect(&lin, format_mask);
|
|
Packit Service |
db8eaa |
snd_mask_intersect(&fl, format_mask);
|
|
Packit Service |
db8eaa |
if (snd_mask_empty(&lin) && snd_mask_empty(&fl)) {
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_NONLINEAR
|
|
Packit Service |
db8eaa |
unsigned int i;
|
|
Packit Service |
db8eaa |
for (i = 0; i < sizeof(nonlinear_preferred_formats) / sizeof(nonlinear_preferred_formats[0]); ++i) {
|
|
Packit Service |
db8eaa |
snd_pcm_format_t f = nonlinear_preferred_formats[i];
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_test(format_mask, f))
|
|
Packit Service |
db8eaa |
return f;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
return SND_PCM_FORMAT_UNKNOWN;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_LFLOAT
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_float(format)) {
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_test(&fl, format)) {
|
|
Packit Service |
db8eaa |
unsigned int i;
|
|
Packit Service |
db8eaa |
for (i = 0; i < sizeof(float_preferred_formats) / sizeof(float_preferred_formats[0]); ++i) {
|
|
Packit Service |
db8eaa |
snd_pcm_format_t f = float_preferred_formats[i];
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_test(format_mask, f))
|
|
Packit Service |
db8eaa |
return f;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
w = 32;
|
|
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db8eaa |
u = 0;
|
|
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db8eaa |
e = snd_pcm_format_big_endian(format);
|
|
Packit Service |
db8eaa |
} else
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
if (snd_mask_empty(&lin)) {
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_LFLOAT
|
|
Packit Service |
db8eaa |
unsigned int i;
|
|
Packit Service |
db8eaa |
for (i = 0; i < sizeof(float_preferred_formats) / sizeof(float_preferred_formats[0]); ++i) {
|
|
Packit Service |
db8eaa |
snd_pcm_format_t f = float_preferred_formats[i];
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_test(format_mask, f))
|
|
Packit Service |
db8eaa |
return f;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
return SND_PCM_FORMAT_UNKNOWN;
|
|
Packit Service |
db8eaa |
} else {
|
|
Packit Service |
db8eaa |
w = snd_pcm_format_width(format);
|
|
Packit Service |
db8eaa |
u = snd_pcm_format_unsigned(format);
|
|
Packit Service |
db8eaa |
e = snd_pcm_format_big_endian(format);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
for (w1 = w; w1 <= 32; w1++) {
|
|
Packit Service |
db8eaa |
f = check_linear_format(format_mask, w1, u, e);
|
|
Packit Service |
db8eaa |
if (f != SND_PCM_FORMAT_UNKNOWN)
|
|
Packit Service |
db8eaa |
return f;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
for (w1 = w - 1; w1 > 0; w1--) {
|
|
Packit Service |
db8eaa |
f = check_linear_format(format_mask, w1, u, e);
|
|
Packit Service |
db8eaa |
if (f != SND_PCM_FORMAT_UNKNOWN)
|
|
Packit Service |
db8eaa |
return f;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
return SND_PCM_FORMAT_UNKNOWN;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static void snd_pcm_plug_clear(snd_pcm_t *pcm)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
snd_pcm_t *slave = plug->req_slave;
|
|
Packit Service |
db8eaa |
/* Clear old plugins */
|
|
Packit Service |
db8eaa |
if (plug->gen.slave != slave) {
|
|
Packit Service |
db8eaa |
snd_pcm_unlink_hw_ptr(pcm, plug->gen.slave);
|
|
Packit Service |
db8eaa |
snd_pcm_unlink_appl_ptr(pcm, plug->gen.slave);
|
|
Packit Service |
db8eaa |
snd_pcm_close(plug->gen.slave);
|
|
Packit Service |
db8eaa |
plug->gen.slave = slave;
|
|
Packit Service |
db8eaa |
pcm->fast_ops = slave->fast_ops;
|
|
Packit Service |
db8eaa |
pcm->fast_op_arg = slave->fast_op_arg;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
#ifndef DOC_HIDDEN
|
|
Packit Service |
db8eaa |
typedef struct {
|
|
Packit Service |
db8eaa |
snd_pcm_access_t access;
|
|
Packit Service |
db8eaa |
snd_pcm_format_t format;
|
|
Packit Service |
db8eaa |
unsigned int channels;
|
|
Packit Service |
db8eaa |
unsigned int rate;
|
|
Packit Service |
db8eaa |
} snd_pcm_plug_params_t;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_RATE
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_change_rate(snd_pcm_t *pcm, snd_pcm_t **new, snd_pcm_plug_params_t *clt, snd_pcm_plug_params_t *slv)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
if (clt->rate == slv->rate)
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
assert(snd_pcm_format_linear(slv->format));
|
|
Packit Service |
db8eaa |
err = snd_pcm_rate_open(new, NULL, slv->format, slv->rate, plug->rate_converter,
|
|
Packit Service |
db8eaa |
plug->gen.slave, plug->gen.slave != plug->req_slave);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
slv->access = clt->access;
|
|
Packit Service |
db8eaa |
slv->rate = clt->rate;
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_linear(clt->format))
|
|
Packit Service |
db8eaa |
slv->format = clt->format;
|
|
Packit Service |
db8eaa |
return 1;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ROUTE
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_change_channels(snd_pcm_t *pcm, snd_pcm_t **new, snd_pcm_plug_params_t *clt, snd_pcm_plug_params_t *slv)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
unsigned int tt_ssize, tt_cused, tt_sused;
|
|
Packit Service |
db8eaa |
snd_pcm_route_ttable_entry_t *ttable;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
if (clt->channels == slv->channels &&
|
|
Packit Service |
db8eaa |
(!plug->ttable || plug->ttable_ok))
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
if (clt->rate != slv->rate &&
|
|
Packit Service |
db8eaa |
clt->channels > slv->channels)
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
assert(snd_pcm_format_linear(slv->format));
|
|
Packit Service |
db8eaa |
tt_ssize = slv->channels;
|
|
Packit Service |
db8eaa |
tt_cused = clt->channels;
|
|
Packit Service |
db8eaa |
tt_sused = slv->channels;
|
|
Packit Service |
db8eaa |
ttable = alloca(tt_cused * tt_sused * sizeof(*ttable));
|
|
Packit Service |
db8eaa |
if (plug->ttable) { /* expand or shrink table */
|
|
Packit Service |
db8eaa |
unsigned int c = 0, s = 0;
|
|
Packit Service |
db8eaa |
for (c = 0; c < tt_cused; c++) {
|
|
Packit Service |
db8eaa |
for (s = 0; s < tt_sused; s++) {
|
|
Packit Service |
db8eaa |
snd_pcm_route_ttable_entry_t v;
|
|
Packit Service |
db8eaa |
if (c >= plug->tt_cused)
|
|
Packit Service |
db8eaa |
v = 0;
|
|
Packit Service |
db8eaa |
else if (s >= plug->tt_sused)
|
|
Packit Service |
db8eaa |
v = 0;
|
|
Packit Service |
db8eaa |
else
|
|
Packit Service |
db8eaa |
v = plug->ttable[c * plug->tt_ssize + s];
|
|
Packit Service |
db8eaa |
ttable[c * tt_ssize + s] = v;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
plug->ttable_ok = 1;
|
|
Packit Service |
db8eaa |
} else {
|
|
Packit Service |
db8eaa |
unsigned int k;
|
|
Packit Service |
db8eaa |
unsigned int c = 0, s = 0;
|
|
Packit Service |
db8eaa |
enum snd_pcm_plug_route_policy rpolicy = plug->route_policy;
|
|
Packit Service |
db8eaa |
int n;
|
|
Packit Service |
db8eaa |
for (k = 0; k < tt_cused * tt_sused; ++k)
|
|
Packit Service |
db8eaa |
ttable[k] = 0;
|
|
Packit Service |
db8eaa |
if (rpolicy == PLUG_ROUTE_POLICY_DEFAULT) {
|
|
Packit Service |
db8eaa |
rpolicy = PLUG_ROUTE_POLICY_COPY;
|
|
Packit Service |
db8eaa |
/* it's hack for mono conversion */
|
|
Packit Service |
db8eaa |
if (clt->channels == 1 || slv->channels == 1)
|
|
Packit Service |
db8eaa |
rpolicy = PLUG_ROUTE_POLICY_AVERAGE;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
switch (rpolicy) {
|
|
Packit Service |
db8eaa |
case PLUG_ROUTE_POLICY_AVERAGE:
|
|
Packit Service |
db8eaa |
case PLUG_ROUTE_POLICY_DUP:
|
|
Packit Service |
db8eaa |
if (clt->channels > slv->channels) {
|
|
Packit Service |
db8eaa |
n = clt->channels;
|
|
Packit Service |
db8eaa |
} else {
|
|
Packit Service |
db8eaa |
n = slv->channels;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
while (n-- > 0) {
|
|
Packit Service |
db8eaa |
snd_pcm_route_ttable_entry_t v = SND_PCM_PLUGIN_ROUTE_FULL;
|
|
Packit Service |
db8eaa |
if (rpolicy == PLUG_ROUTE_POLICY_AVERAGE) {
|
|
Packit Service |
db8eaa |
if (pcm->stream == SND_PCM_STREAM_PLAYBACK &&
|
|
Packit Service |
db8eaa |
clt->channels > slv->channels) {
|
|
Packit Service |
db8eaa |
int srcs = clt->channels / slv->channels;
|
|
Packit Service |
db8eaa |
if (s < clt->channels % slv->channels)
|
|
Packit Service |
db8eaa |
srcs++;
|
|
Packit Service |
db8eaa |
v /= srcs;
|
|
Packit Service |
db8eaa |
} else if (pcm->stream == SND_PCM_STREAM_CAPTURE &&
|
|
Packit Service |
db8eaa |
slv->channels > clt->channels) {
|
|
Packit Service |
db8eaa |
int srcs = slv->channels / clt->channels;
|
|
Packit Service |
db8eaa |
if (s < slv->channels % clt->channels)
|
|
Packit Service |
db8eaa |
srcs++;
|
|
Packit Service |
db8eaa |
v /= srcs;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
ttable[c * tt_ssize + s] = v;
|
|
Packit Service |
db8eaa |
if (++c == clt->channels)
|
|
Packit Service |
db8eaa |
c = 0;
|
|
Packit Service |
db8eaa |
if (++s == slv->channels)
|
|
Packit Service |
db8eaa |
s = 0;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
case PLUG_ROUTE_POLICY_COPY:
|
|
Packit Service |
db8eaa |
if (clt->channels < slv->channels) {
|
|
Packit Service |
db8eaa |
n = clt->channels;
|
|
Packit Service |
db8eaa |
} else {
|
|
Packit Service |
db8eaa |
n = slv->channels;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
for (c = 0; (int)c < n; c++)
|
|
Packit Service |
db8eaa |
ttable[c * tt_ssize + c] = SND_PCM_PLUGIN_ROUTE_FULL;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
default:
|
|
Packit Service |
db8eaa |
SNDERR("Invalid route policy");
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
err = snd_pcm_route_open(new, NULL, slv->format, (int) slv->channels, ttable, tt_ssize, tt_cused, tt_sused, plug->gen.slave, plug->gen.slave != plug->req_slave);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
slv->channels = clt->channels;
|
|
Packit Service |
db8eaa |
slv->access = clt->access;
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_linear(clt->format))
|
|
Packit Service |
db8eaa |
slv->format = clt->format;
|
|
Packit Service |
db8eaa |
return 1;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_change_format(snd_pcm_t *pcm, snd_pcm_t **new, snd_pcm_plug_params_t *clt, snd_pcm_plug_params_t *slv)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
snd_pcm_format_t cfmt;
|
|
Packit Service |
db8eaa |
int (*f)(snd_pcm_t **_pcm, const char *name, snd_pcm_format_t sformat, snd_pcm_t *slave, int close_slave);
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
/* No conversion is needed */
|
|
Packit Service |
db8eaa |
if (clt->format == slv->format &&
|
|
Packit Service |
db8eaa |
clt->rate == slv->rate &&
|
|
Packit Service |
db8eaa |
clt->channels == slv->channels &&
|
|
Packit Service |
db8eaa |
(!plug->ttable || plug->ttable_ok))
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_linear(slv->format)) {
|
|
Packit Service |
db8eaa |
/* Conversion is done in another plugin */
|
|
Packit Service |
db8eaa |
if (clt->rate != slv->rate ||
|
|
Packit Service |
db8eaa |
clt->channels != slv->channels ||
|
|
Packit Service |
db8eaa |
(plug->ttable && !plug->ttable_ok))
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
cfmt = clt->format;
|
|
Packit Service |
db8eaa |
switch (clt->format) {
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_MULAW
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_MU_LAW:
|
|
Packit Service |
db8eaa |
f = snd_pcm_mulaw_open;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ALAW
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_A_LAW:
|
|
Packit Service |
db8eaa |
f = snd_pcm_alaw_open;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ADPCM
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_IMA_ADPCM:
|
|
Packit Service |
db8eaa |
f = snd_pcm_adpcm_open;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
default:
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_LFLOAT
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_float(clt->format))
|
|
Packit Service |
db8eaa |
f = snd_pcm_lfloat_open;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
else
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
f = snd_pcm_linear_open;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_LFLOAT
|
|
Packit Service |
db8eaa |
} else if (snd_pcm_format_float(slv->format)) {
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_linear(clt->format)) {
|
|
Packit Service |
db8eaa |
cfmt = clt->format;
|
|
Packit Service |
db8eaa |
f = snd_pcm_lfloat_open;
|
|
Packit Service |
db8eaa |
} else if (clt->rate != slv->rate || clt->channels != slv->channels ||
|
|
Packit Service |
db8eaa |
(plug->ttable && !plug->ttable_ok)) {
|
|
Packit Service |
db8eaa |
cfmt = SND_PCM_FORMAT_S16;
|
|
Packit Service |
db8eaa |
f = snd_pcm_lfloat_open;
|
|
Packit Service |
db8eaa |
} else
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_NONLINEAR
|
|
Packit Service |
db8eaa |
} else {
|
|
Packit Service |
db8eaa |
switch (slv->format) {
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_MULAW
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_MU_LAW:
|
|
Packit Service |
db8eaa |
f = snd_pcm_mulaw_open;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ALAW
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_A_LAW:
|
|
Packit Service |
db8eaa |
f = snd_pcm_alaw_open;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ADPCM
|
|
Packit Service |
db8eaa |
case SND_PCM_FORMAT_IMA_ADPCM:
|
|
Packit Service |
db8eaa |
f = snd_pcm_adpcm_open;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
default:
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_linear(clt->format))
|
|
Packit Service |
db8eaa |
cfmt = clt->format;
|
|
Packit Service |
db8eaa |
else
|
|
Packit Service |
db8eaa |
cfmt = SND_PCM_FORMAT_S16;
|
|
Packit Service |
db8eaa |
#endif /* NONLINEAR */
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
err = f(new, NULL, slv->format, plug->gen.slave, plug->gen.slave != plug->req_slave);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
slv->format = cfmt;
|
|
Packit Service |
db8eaa |
slv->access = clt->access;
|
|
Packit Service |
db8eaa |
return 1;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_change_access(snd_pcm_t *pcm, snd_pcm_t **new, snd_pcm_plug_params_t *clt, snd_pcm_plug_params_t *slv)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
if (clt->access == slv->access)
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
err = snd_pcm_copy_open(new, NULL, plug->gen.slave, plug->gen.slave != plug->req_slave);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
slv->access = clt->access;
|
|
Packit Service |
db8eaa |
return 1;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_MMAP_EMUL
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_change_mmap(snd_pcm_t *pcm, snd_pcm_t **new,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_params_t *clt,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_params_t *slv)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (clt->access == slv->access)
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
switch (slv->access) {
|
|
Packit Service |
db8eaa |
case SND_PCM_ACCESS_MMAP_INTERLEAVED:
|
|
Packit Service |
db8eaa |
case SND_PCM_ACCESS_MMAP_NONINTERLEAVED:
|
|
Packit Service |
db8eaa |
case SND_PCM_ACCESS_MMAP_COMPLEX:
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
default:
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
err = __snd_pcm_mmap_emul_open(new, NULL, plug->gen.slave,
|
|
Packit Service |
db8eaa |
plug->gen.slave != plug->req_slave);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
switch (slv->access) {
|
|
Packit Service |
db8eaa |
case SND_PCM_ACCESS_RW_INTERLEAVED:
|
|
Packit Service |
db8eaa |
slv->access = SND_PCM_ACCESS_MMAP_INTERLEAVED;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
case SND_PCM_ACCESS_RW_NONINTERLEAVED:
|
|
Packit Service |
db8eaa |
slv->access = SND_PCM_ACCESS_MMAP_NONINTERLEAVED;
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
default:
|
|
Packit Service |
db8eaa |
break;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
return 1;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_insert_plugins(snd_pcm_t *pcm,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_params_t *client,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_params_t *slave)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
static int (*const funcs[])(snd_pcm_t *_pcm, snd_pcm_t **new, snd_pcm_plug_params_t *s, snd_pcm_plug_params_t *d) = {
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_MMAP_EMUL
|
|
Packit Service |
db8eaa |
snd_pcm_plug_change_mmap,
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
snd_pcm_plug_change_format,
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ROUTE
|
|
Packit Service |
db8eaa |
snd_pcm_plug_change_channels,
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_RATE
|
|
Packit Service |
db8eaa |
snd_pcm_plug_change_rate,
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ROUTE
|
|
Packit Service |
db8eaa |
snd_pcm_plug_change_channels,
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
snd_pcm_plug_change_format,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_change_access
|
|
Packit Service |
db8eaa |
};
|
|
Packit Service |
db8eaa |
snd_pcm_plug_params_t p = *slave;
|
|
Packit Service |
db8eaa |
unsigned int k = 0;
|
|
Packit Service |
db8eaa |
plug->ttable_ok = 0;
|
|
Packit Service |
db8eaa |
while (client->format != p.format ||
|
|
Packit Service |
db8eaa |
client->channels != p.channels ||
|
|
Packit Service |
db8eaa |
client->rate != p.rate ||
|
|
Packit Service |
db8eaa |
client->access != p.access ||
|
|
Packit Service |
db8eaa |
(plug->ttable && !plug->ttable_ok)) {
|
|
Packit Service |
db8eaa |
snd_pcm_t *new;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
if (k >= sizeof(funcs)/sizeof(*funcs)) {
|
|
Packit Service |
db8eaa |
snd_pcm_plug_clear(pcm);
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
err = funcs[k](pcm, &new, client, &p);
|
|
Packit Service |
db8eaa |
if (err < 0) {
|
|
Packit Service |
db8eaa |
snd_pcm_plug_clear(pcm);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (err) {
|
|
Packit Service |
db8eaa |
plug->gen.slave = new;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
k++;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_hw_refine_cprepare(snd_pcm_t *pcm ATTRIBUTE_UNUSED, snd_pcm_hw_params_t *params)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
unsigned int rate_min, channels_max;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
/* HACK: to avoid overflow in PARTBIT_RATE code */
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_param_get_min(params, SND_PCM_HW_PARAM_RATE, &rate_min, NULL);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
if (rate_min < 4000) {
|
|
Packit Service |
db8eaa |
_snd_pcm_hw_param_set_min(params, SND_PCM_HW_PARAM_RATE, 4000, 0);
|
|
Packit Service |
db8eaa |
if (snd_pcm_hw_param_empty(params, SND_PCM_HW_PARAM_RATE))
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
/* HACK: to avoid overflow in PERIOD_SIZE code */
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_param_get_max(params, SND_PCM_HW_PARAM_CHANNELS, &channels_max, NULL);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
if (channels_max > 10000) {
|
|
Packit Service |
db8eaa |
_snd_pcm_hw_param_set_max(params, SND_PCM_HW_PARAM_CHANNELS, 10000, 0);
|
|
Packit Service |
db8eaa |
if (snd_pcm_hw_param_empty(params, SND_PCM_HW_PARAM_CHANNELS))
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_hw_refine_sprepare(snd_pcm_t *pcm, snd_pcm_hw_params_t *sparams)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
_snd_pcm_hw_params_any(sparams);
|
|
Packit Service |
db8eaa |
if (plug->sformat >= 0) {
|
|
Packit Service |
db8eaa |
_snd_pcm_hw_params_set_format(sparams, plug->sformat);
|
|
Packit Service |
db8eaa |
_snd_pcm_hw_params_set_subformat(sparams, SND_PCM_SUBFORMAT_STD);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (plug->schannels > 0)
|
|
Packit Service |
db8eaa |
_snd_pcm_hw_param_set(sparams, SND_PCM_HW_PARAM_CHANNELS,
|
|
Packit Service |
db8eaa |
plug->schannels, 0);
|
|
Packit Service |
db8eaa |
if (plug->srate > 0)
|
|
Packit Service |
db8eaa |
_snd_pcm_hw_param_set_minmax(sparams, SND_PCM_HW_PARAM_RATE,
|
|
Packit Service |
db8eaa |
plug->srate, 0, plug->srate + 1, -1);
|
|
Packit Service |
db8eaa |
/* reduce the available configurations */
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_refine(plug->req_slave, sparams);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int check_access_change(snd_pcm_hw_params_t *cparams,
|
|
Packit Service |
db8eaa |
snd_pcm_hw_params_t *sparams)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_access_mask_t *smask;
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_MMAP_EMUL
|
|
Packit Service |
db8eaa |
const snd_pcm_access_mask_t *cmask;
|
|
Packit Service |
db8eaa |
snd_pcm_access_mask_t mask;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
smask = (snd_pcm_access_mask_t *)
|
|
Packit Service |
db8eaa |
snd_pcm_hw_param_get_mask(sparams,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_ACCESS);
|
|
Packit Service |
db8eaa |
if (snd_pcm_access_mask_test(smask, SND_PCM_ACCESS_MMAP_INTERLEAVED) ||
|
|
Packit Service |
db8eaa |
snd_pcm_access_mask_test(smask, SND_PCM_ACCESS_MMAP_NONINTERLEAVED) ||
|
|
Packit Service |
db8eaa |
snd_pcm_access_mask_test(smask, SND_PCM_ACCESS_MMAP_COMPLEX))
|
|
Packit Service |
db8eaa |
return 0; /* OK, we have mmap support */
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_MMAP_EMUL
|
|
Packit Service |
db8eaa |
/* no mmap support - we need mmap emulation */
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (!snd_pcm_access_mask_test(smask, SND_PCM_ACCESS_RW_INTERLEAVED) &&
|
|
Packit Service |
db8eaa |
!snd_pcm_access_mask_test(smask, SND_PCM_ACCESS_RW_NONINTERLEAVED))
|
|
Packit Service |
db8eaa |
return -EINVAL; /* even no RW access? no way! */
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
cmask = (const snd_pcm_access_mask_t *)
|
|
Packit Service |
db8eaa |
snd_pcm_hw_param_get_mask(cparams,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_ACCESS);
|
|
Packit Service |
db8eaa |
snd_mask_none(&mask);
|
|
Packit Service |
db8eaa |
if (snd_pcm_access_mask_test(cmask, SND_PCM_ACCESS_RW_INTERLEAVED) ||
|
|
Packit Service |
db8eaa |
snd_pcm_access_mask_test(cmask, SND_PCM_ACCESS_MMAP_INTERLEAVED)) {
|
|
Packit Service |
db8eaa |
if (snd_pcm_access_mask_test(smask, SND_PCM_ACCESS_RW_INTERLEAVED))
|
|
Packit Service |
db8eaa |
snd_pcm_access_mask_set(&mask,
|
|
Packit Service |
db8eaa |
SND_PCM_ACCESS_RW_INTERLEAVED);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (snd_pcm_access_mask_test(cmask, SND_PCM_ACCESS_RW_NONINTERLEAVED) ||
|
|
Packit Service |
db8eaa |
snd_pcm_access_mask_test(cmask, SND_PCM_ACCESS_MMAP_NONINTERLEAVED)) {
|
|
Packit Service |
db8eaa |
if (snd_pcm_access_mask_test(smask, SND_PCM_ACCESS_RW_NONINTERLEAVED))
|
|
Packit Service |
db8eaa |
snd_pcm_access_mask_set(&mask,
|
|
Packit Service |
db8eaa |
SND_PCM_ACCESS_RW_NONINTERLEAVED);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (!snd_mask_empty(&mask))
|
|
Packit Service |
db8eaa |
*smask = mask; /* prefer the straight conversion */
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
#else
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_hw_refine_schange(snd_pcm_t *pcm, snd_pcm_hw_params_t *params,
|
|
Packit Service |
db8eaa |
snd_pcm_hw_params_t *sparams)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
snd_pcm_t *slave = plug->req_slave;
|
|
Packit Service |
db8eaa |
unsigned int links = (SND_PCM_HW_PARBIT_PERIOD_TIME |
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARBIT_TICK_TIME);
|
|
Packit Service |
db8eaa |
const snd_pcm_format_mask_t *format_mask, *sformat_mask;
|
|
Packit Service |
db8eaa |
snd_pcm_format_mask_t sfmt_mask;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
snd_pcm_format_t format;
|
|
Packit Service |
db8eaa |
snd_interval_t t, buffer_size;
|
|
Packit Service |
db8eaa |
const snd_interval_t *srate, *crate;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (plug->srate == -2 ||
|
|
Packit Service |
db8eaa |
(pcm->mode & SND_PCM_NO_AUTO_RESAMPLE) ||
|
|
Packit Service |
db8eaa |
(params->flags & SND_PCM_HW_PARAMS_NORESAMPLE))
|
|
Packit Service |
db8eaa |
links |= SND_PCM_HW_PARBIT_RATE;
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_param_refine_multiple(slave, sparams, SND_PCM_HW_PARAM_RATE, params);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (plug->schannels == -2 || (pcm->mode & SND_PCM_NO_AUTO_CHANNELS))
|
|
Packit Service |
db8eaa |
links |= SND_PCM_HW_PARBIT_CHANNELS;
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_param_refine_near(slave, sparams, SND_PCM_HW_PARAM_CHANNELS, params);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (plug->sformat == -2 || (pcm->mode & SND_PCM_NO_AUTO_FORMAT))
|
|
Packit Service |
db8eaa |
links |= SND_PCM_HW_PARBIT_FORMAT;
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
format_mask = snd_pcm_hw_param_get_mask(params, SND_PCM_HW_PARAM_FORMAT);
|
|
Packit Service |
db8eaa |
sformat_mask = snd_pcm_hw_param_get_mask(sparams, SND_PCM_HW_PARAM_FORMAT);
|
|
Packit Service |
db8eaa |
snd_mask_none(&sfmt_mask);
|
|
Packit Service |
db8eaa |
for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
|
|
Packit Service |
db8eaa |
snd_pcm_format_t f;
|
|
Packit Service |
db8eaa |
if (!snd_pcm_format_mask_test(format_mask, format))
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_test(sformat_mask, format))
|
|
Packit Service |
db8eaa |
f = format;
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
f = snd_pcm_plug_slave_format(format, sformat_mask);
|
|
Packit Service |
db8eaa |
if (f == SND_PCM_FORMAT_UNKNOWN)
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
snd_pcm_format_mask_set(&sfmt_mask, f);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_empty(&sfmt_mask)) {
|
|
Packit Service |
db8eaa |
SNDERR("Unable to find an usable slave format for '%s'", pcm->name);
|
|
Packit Service |
db8eaa |
for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
|
|
Packit Service |
db8eaa |
if (!snd_pcm_format_mask_test(format_mask, format))
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
SNDERR("Format: %s", snd_pcm_format_name(format));
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
|
|
Packit Service |
db8eaa |
if (!snd_pcm_format_mask_test(sformat_mask, format))
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
SNDERR("Slave format: %s", snd_pcm_format_name(format));
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_param_set_mask(slave, sparams, SND_CHANGE,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_FORMAT, &sfmt_mask);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (snd_pcm_hw_param_never_eq(params, SND_PCM_HW_PARAM_ACCESS, sparams)) {
|
|
Packit Service |
db8eaa |
err = check_access_change(params, sparams);
|
|
Packit Service |
db8eaa |
if (err < 0) {
|
|
Packit Service |
db8eaa |
SNDERR("Unable to find an usable access for '%s'",
|
|
Packit Service |
db8eaa |
pcm->name);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if ((links & SND_PCM_HW_PARBIT_RATE) ||
|
|
Packit Service |
db8eaa |
snd_pcm_hw_param_always_eq(params, SND_PCM_HW_PARAM_RATE, sparams))
|
|
Packit Service |
db8eaa |
links |= (SND_PCM_HW_PARBIT_PERIOD_SIZE |
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARBIT_BUFFER_SIZE);
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
snd_interval_copy(&buffer_size, snd_pcm_hw_param_get_interval(params, SND_PCM_HW_PARAM_BUFFER_SIZE));
|
|
Packit Service |
db8eaa |
snd_interval_unfloor(&buffer_size);
|
|
Packit Service |
db8eaa |
crate = snd_pcm_hw_param_get_interval(params, SND_PCM_HW_PARAM_RATE);
|
|
Packit Service |
db8eaa |
srate = snd_pcm_hw_param_get_interval(sparams, SND_PCM_HW_PARAM_RATE);
|
|
Packit Service |
db8eaa |
snd_interval_muldiv(&buffer_size, srate, crate, &t);
|
|
Packit Service |
db8eaa |
err = _snd_pcm_hw_param_set_interval(sparams, SND_PCM_HW_PARAM_BUFFER_SIZE, &t);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
err = _snd_pcm_hw_params_refine(sparams, links, params);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_hw_refine_cchange(snd_pcm_t *pcm ATTRIBUTE_UNUSED,
|
|
Packit Service |
db8eaa |
snd_pcm_hw_params_t *params,
|
|
Packit Service |
db8eaa |
snd_pcm_hw_params_t *sparams)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
unsigned int links = (SND_PCM_HW_PARBIT_PERIOD_TIME |
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARBIT_TICK_TIME);
|
|
Packit Service |
db8eaa |
const snd_pcm_format_mask_t *format_mask, *sformat_mask;
|
|
Packit Service |
db8eaa |
snd_pcm_format_mask_t fmt_mask;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
snd_pcm_format_t format;
|
|
Packit Service |
db8eaa |
snd_interval_t t;
|
|
Packit Service |
db8eaa |
const snd_interval_t *sbuffer_size;
|
|
Packit Service |
db8eaa |
const snd_interval_t *srate, *crate;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (plug->schannels == -2 || (pcm->mode & SND_PCM_NO_AUTO_CHANNELS))
|
|
Packit Service |
db8eaa |
links |= SND_PCM_HW_PARBIT_CHANNELS;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (plug->sformat == -2 || (pcm->mode & SND_PCM_NO_AUTO_FORMAT))
|
|
Packit Service |
db8eaa |
links |= SND_PCM_HW_PARBIT_FORMAT;
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
format_mask = snd_pcm_hw_param_get_mask(params,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_FORMAT);
|
|
Packit Service |
db8eaa |
sformat_mask = snd_pcm_hw_param_get_mask(sparams,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_FORMAT);
|
|
Packit Service |
db8eaa |
snd_mask_none(&fmt_mask);
|
|
Packit Service |
db8eaa |
for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
|
|
Packit Service |
db8eaa |
snd_pcm_format_t f;
|
|
Packit Service |
db8eaa |
if (!snd_pcm_format_mask_test(format_mask, format))
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_test(sformat_mask, format))
|
|
Packit Service |
db8eaa |
f = format;
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
f = snd_pcm_plug_slave_format(format, sformat_mask);
|
|
Packit Service |
db8eaa |
if (f == SND_PCM_FORMAT_UNKNOWN)
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
snd_pcm_format_mask_set(&fmt_mask, format);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (snd_pcm_format_mask_empty(&fmt_mask)) {
|
|
Packit Service |
db8eaa |
SNDERR("Unable to find an usable client format");
|
|
Packit Service |
db8eaa |
for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
|
|
Packit Service |
db8eaa |
if (!snd_pcm_format_mask_test(format_mask, format))
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
SNDERR("Format: %s", snd_pcm_format_name(format));
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
|
|
Packit Service |
db8eaa |
if (!snd_pcm_format_mask_test(sformat_mask, format))
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
SNDERR("Slave format: %s", snd_pcm_format_name(format));
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
err = _snd_pcm_hw_param_set_mask(params,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_FORMAT, &fmt_mask);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
if (plug->srate == -2 ||
|
|
Packit Service |
db8eaa |
(pcm->mode & SND_PCM_NO_AUTO_RESAMPLE) ||
|
|
Packit Service |
db8eaa |
(params->flags & SND_PCM_HW_PARAMS_NORESAMPLE))
|
|
Packit Service |
db8eaa |
links |= SND_PCM_HW_PARBIT_RATE;
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
unsigned int rate_min, srate_min;
|
|
Packit Service |
db8eaa |
int rate_mindir, srate_mindir;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
/* This is a temporary hack, waiting for a better solution */
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_param_get_min(params, SND_PCM_HW_PARAM_RATE, &rate_min, &rate_mindir);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_param_get_min(sparams, SND_PCM_HW_PARAM_RATE, &srate_min, &srate_mindir);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
if (rate_min == srate_min && srate_mindir > rate_mindir) {
|
|
Packit Service |
db8eaa |
err = _snd_pcm_hw_param_set_min(params, SND_PCM_HW_PARAM_RATE, srate_min, srate_mindir);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if ((links & SND_PCM_HW_PARBIT_RATE) ||
|
|
Packit Service |
db8eaa |
snd_pcm_hw_param_always_eq(params, SND_PCM_HW_PARAM_RATE, sparams))
|
|
Packit Service |
db8eaa |
links |= (SND_PCM_HW_PARBIT_PERIOD_SIZE |
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARBIT_BUFFER_SIZE);
|
|
Packit Service |
db8eaa |
else {
|
|
Packit Service |
db8eaa |
sbuffer_size = snd_pcm_hw_param_get_interval(sparams, SND_PCM_HW_PARAM_BUFFER_SIZE);
|
|
Packit Service |
db8eaa |
crate = snd_pcm_hw_param_get_interval(params, SND_PCM_HW_PARAM_RATE);
|
|
Packit Service |
db8eaa |
srate = snd_pcm_hw_param_get_interval(sparams, SND_PCM_HW_PARAM_RATE);
|
|
Packit Service |
db8eaa |
snd_interval_muldiv(sbuffer_size, crate, srate, &t);
|
|
Packit Service |
db8eaa |
snd_interval_floor(&t);
|
|
Packit Service |
db8eaa |
if (snd_interval_empty(&t))
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
err = _snd_pcm_hw_param_set_interval(params, SND_PCM_HW_PARAM_BUFFER_SIZE, &t);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
err = _snd_pcm_hw_params_refine(params, links, sparams);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
/* FIXME */
|
|
Packit Service |
db8eaa |
params->info &= ~(SND_PCM_INFO_MMAP | SND_PCM_INFO_MMAP_VALID);
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_hw_refine_slave(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
return snd_pcm_hw_refine(plug->req_slave, params);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
return snd_pcm_hw_refine_slave(pcm, params,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_hw_refine_cprepare,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_hw_refine_cchange,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_hw_refine_sprepare,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_hw_refine_schange,
|
|
Packit Service |
db8eaa |
snd_pcm_plug_hw_refine_slave);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
snd_pcm_t *slave = plug->req_slave;
|
|
Packit Service |
db8eaa |
snd_pcm_plug_params_t clt_params, slv_params;
|
|
Packit Service |
db8eaa |
snd_pcm_hw_params_t sparams;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
err = snd_pcm_plug_hw_refine_sprepare(pcm, &sparams);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
err = snd_pcm_plug_hw_refine_schange(pcm, params, &sparams);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
err = snd_pcm_hw_refine_soft(slave, &sparams);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
INTERNAL(snd_pcm_hw_params_get_access)(params, &clt_params.access);
|
|
Packit Service |
db8eaa |
INTERNAL(snd_pcm_hw_params_get_format)(params, &clt_params.format);
|
|
Packit Service |
db8eaa |
INTERNAL(snd_pcm_hw_params_get_channels)(params, &clt_params.channels);
|
|
Packit Service |
db8eaa |
INTERNAL(snd_pcm_hw_params_get_rate)(params, &clt_params.rate, 0);
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
INTERNAL(snd_pcm_hw_params_get_format)(&sparams, &slv_params.format);
|
|
Packit Service |
db8eaa |
INTERNAL(snd_pcm_hw_params_get_channels)(&sparams, &slv_params.channels);
|
|
Packit Service |
db8eaa |
INTERNAL(snd_pcm_hw_params_get_rate)(&sparams, &slv_params.rate, 0);
|
|
Packit Service |
db8eaa |
snd_pcm_plug_clear(pcm);
|
|
Packit Service |
db8eaa |
if (!(clt_params.format == slv_params.format &&
|
|
Packit Service |
db8eaa |
clt_params.channels == slv_params.channels &&
|
|
Packit Service |
db8eaa |
clt_params.rate == slv_params.rate &&
|
|
Packit Service |
db8eaa |
!plug->ttable &&
|
|
Packit Service |
db8eaa |
snd_pcm_hw_params_test_access(slave, &sparams,
|
|
Packit Service |
db8eaa |
clt_params.access) >= 0)) {
|
|
Packit Service |
db8eaa |
INTERNAL(snd_pcm_hw_params_set_access_first)(slave, &sparams, &slv_params.access);
|
|
Packit Service |
db8eaa |
err = snd_pcm_plug_insert_plugins(pcm, &clt_params, &slv_params);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
slave = plug->gen.slave;
|
|
Packit Service |
db8eaa |
err = _snd_pcm_hw_params_internal(slave, params);
|
|
Packit Service |
db8eaa |
if (err < 0) {
|
|
Packit Service |
db8eaa |
snd_pcm_plug_clear(pcm);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
snd_pcm_unlink_hw_ptr(pcm, plug->req_slave);
|
|
Packit Service |
db8eaa |
snd_pcm_unlink_appl_ptr(pcm, plug->req_slave);
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
pcm->fast_ops = slave->fast_ops;
|
|
Packit Service |
db8eaa |
pcm->fast_op_arg = slave->fast_op_arg;
|
|
Packit Service |
db8eaa |
snd_pcm_link_hw_ptr(pcm, slave);
|
|
Packit Service |
db8eaa |
snd_pcm_link_appl_ptr(pcm, slave);
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static int snd_pcm_plug_hw_free(snd_pcm_t *pcm)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
snd_pcm_t *slave = plug->gen.slave;
|
|
Packit Service |
db8eaa |
int err = snd_pcm_hw_free(slave);
|
|
Packit Service |
db8eaa |
snd_pcm_plug_clear(pcm);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static void snd_pcm_plug_dump(snd_pcm_t *pcm, snd_output_t *out)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug = pcm->private_data;
|
|
Packit Service |
db8eaa |
snd_output_printf(out, "Plug PCM: ");
|
|
Packit Service |
db8eaa |
snd_pcm_dump(plug->gen.slave, out);
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
static const snd_pcm_ops_t snd_pcm_plug_ops = {
|
|
Packit Service |
db8eaa |
.close = snd_pcm_plug_close,
|
|
Packit Service |
db8eaa |
.info = snd_pcm_plug_info,
|
|
Packit Service |
db8eaa |
.hw_refine = snd_pcm_plug_hw_refine,
|
|
Packit Service |
db8eaa |
.hw_params = snd_pcm_plug_hw_params,
|
|
Packit Service |
db8eaa |
.hw_free = snd_pcm_plug_hw_free,
|
|
Packit Service |
db8eaa |
.sw_params = snd_pcm_generic_sw_params,
|
|
Packit Service |
db8eaa |
.channel_info = snd_pcm_generic_channel_info,
|
|
Packit Service |
db8eaa |
.dump = snd_pcm_plug_dump,
|
|
Packit Service |
db8eaa |
.nonblock = snd_pcm_generic_nonblock,
|
|
Packit Service |
db8eaa |
.async = snd_pcm_generic_async,
|
|
Packit Service |
db8eaa |
.mmap = snd_pcm_generic_mmap,
|
|
Packit Service |
db8eaa |
.munmap = snd_pcm_generic_munmap,
|
|
Packit Service |
db8eaa |
.query_chmaps = snd_pcm_generic_query_chmaps,
|
|
Packit Service |
db8eaa |
.get_chmap = snd_pcm_generic_get_chmap,
|
|
Packit Service |
db8eaa |
.set_chmap = snd_pcm_generic_set_chmap,
|
|
Packit Service |
db8eaa |
};
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
/**
|
|
Packit Service |
db8eaa |
* \brief Creates a new Plug PCM
|
|
Packit Service |
db8eaa |
* \param pcmp Returns created PCM handle
|
|
Packit Service |
db8eaa |
* \param name Name of PCM
|
|
Packit Service |
db8eaa |
* \param sformat Slave (destination) format
|
|
Packit Service |
db8eaa |
* \param slave Slave PCM handle
|
|
Packit Service |
db8eaa |
* \param close_slave When set, the slave PCM handle is closed with copy PCM
|
|
Packit Service |
db8eaa |
* \retval zero on success otherwise a negative error code
|
|
Packit Service |
db8eaa |
* \warning Using of this function might be dangerous in the sense
|
|
Packit Service |
db8eaa |
* of compatibility reasons. The prototype might be freely
|
|
Packit Service |
db8eaa |
* changed in future.
|
|
Packit Service |
db8eaa |
*/
|
|
Packit Service |
db8eaa |
int snd_pcm_plug_open(snd_pcm_t **pcmp,
|
|
Packit Service |
db8eaa |
const char *name,
|
|
Packit Service |
db8eaa |
snd_pcm_format_t sformat, int schannels, int srate,
|
|
Packit Service |
db8eaa |
const snd_config_t *rate_converter,
|
|
Packit Service |
db8eaa |
enum snd_pcm_plug_route_policy route_policy,
|
|
Packit Service |
db8eaa |
snd_pcm_route_ttable_entry_t *ttable,
|
|
Packit Service |
db8eaa |
unsigned int tt_ssize,
|
|
Packit Service |
db8eaa |
unsigned int tt_cused, unsigned int tt_sused,
|
|
Packit Service |
db8eaa |
snd_pcm_t *slave, int close_slave)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_pcm_t *pcm;
|
|
Packit Service |
db8eaa |
snd_pcm_plug_t *plug;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
assert(pcmp && slave);
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
plug = calloc(1, sizeof(snd_pcm_plug_t));
|
|
Packit Service |
db8eaa |
if (!plug)
|
|
Packit Service |
db8eaa |
return -ENOMEM;
|
|
Packit Service |
db8eaa |
plug->sformat = sformat;
|
|
Packit Service |
db8eaa |
plug->schannels = schannels;
|
|
Packit Service |
db8eaa |
plug->srate = srate;
|
|
Packit Service |
db8eaa |
plug->gen.slave = plug->req_slave = slave;
|
|
Packit Service |
db8eaa |
plug->gen.close_slave = close_slave;
|
|
Packit Service |
db8eaa |
plug->route_policy = route_policy;
|
|
Packit Service |
db8eaa |
plug->ttable = ttable;
|
|
Packit Service |
db8eaa |
plug->tt_ssize = tt_ssize;
|
|
Packit Service |
db8eaa |
plug->tt_cused = tt_cused;
|
|
Packit Service |
db8eaa |
plug->tt_sused = tt_sused;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
err = snd_pcm_new(&pcm, SND_PCM_TYPE_PLUG, name, slave->stream, slave->mode);
|
|
Packit Service |
db8eaa |
if (err < 0) {
|
|
Packit Service |
db8eaa |
free(plug);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
pcm->ops = &snd_pcm_plug_ops;
|
|
Packit Service |
db8eaa |
pcm->fast_ops = slave->fast_ops;
|
|
Packit Service |
db8eaa |
pcm->fast_op_arg = slave->fast_op_arg;
|
|
Packit Service |
db8eaa |
if (rate_converter) {
|
|
Packit Service |
db8eaa |
err = snd_config_copy(&plug->rate_converter,
|
|
Packit Service |
db8eaa |
(snd_config_t *)rate_converter);
|
|
Packit Service |
db8eaa |
if (err < 0) {
|
|
Packit Service |
db8eaa |
snd_pcm_free(pcm);
|
|
Packit Service |
db8eaa |
free(plug);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
pcm->private_data = plug;
|
|
Packit Service |
db8eaa |
pcm->poll_fd = slave->poll_fd;
|
|
Packit Service |
db8eaa |
pcm->poll_events = slave->poll_events;
|
|
Packit Service |
db8eaa |
pcm->mmap_shadow = 1;
|
|
Packit Service |
db8eaa |
pcm->tstamp_type = slave->tstamp_type;
|
|
Packit Service |
db8eaa |
snd_pcm_link_hw_ptr(pcm, slave);
|
|
Packit Service |
db8eaa |
snd_pcm_link_appl_ptr(pcm, slave);
|
|
Packit Service |
db8eaa |
*pcmp = pcm;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
return 0;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
/*! \page pcm_plugins
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
\section pcm_plugins_plug Automatic conversion plugin
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
This plugin converts channels, rate and format on request.
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
\code
|
|
Packit Service |
db8eaa |
pcm.name {
|
|
Packit Service |
db8eaa |
type plug # Automatic conversion PCM
|
|
Packit Service |
db8eaa |
slave STR # Slave name
|
|
Packit Service |
db8eaa |
# or
|
|
Packit Service |
db8eaa |
slave { # Slave definition
|
|
Packit Service |
db8eaa |
pcm STR # Slave PCM name
|
|
Packit Service |
db8eaa |
# or
|
|
Packit Service |
db8eaa |
pcm { } # Slave PCM definition
|
|
Packit Service |
db8eaa |
[format STR] # Slave format (default nearest) or "unchanged"
|
|
Packit Service |
db8eaa |
[channels INT] # Slave channels (default nearest) or "unchanged"
|
|
Packit Service |
db8eaa |
[rate INT] # Slave rate (default nearest) or "unchanged"
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
route_policy STR # route policy for automatic ttable generation
|
|
Packit Service |
db8eaa |
# STR can be 'default', 'average', 'copy', 'duplicate'
|
|
Packit Service |
db8eaa |
# average: result is average of input channels
|
|
Packit Service |
db8eaa |
# copy: only first channels are copied to destination
|
|
Packit Service |
db8eaa |
# duplicate: duplicate first set of channels
|
|
Packit Service |
db8eaa |
# default: copy policy, except for mono capture - sum
|
|
Packit Service |
db8eaa |
ttable { # Transfer table (bi-dimensional compound of cchannels * schannels numbers)
|
|
Packit Service |
db8eaa |
CCHANNEL {
|
|
Packit Service |
db8eaa |
SCHANNEL REAL # route value (0.0 - 1.0)
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
rate_converter STR # type of rate converter
|
|
Packit Service |
db8eaa |
# or
|
|
Packit Service |
db8eaa |
rate_converter [ STR1 STR2 ... ]
|
|
Packit Service |
db8eaa |
# type of rate converter
|
|
Packit Service |
db8eaa |
# default value is taken from defaults.pcm.rate_converter
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
\endcode
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
\subsection pcm_plugins_plug_funcref Function reference
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
snd_pcm_plug_open()
|
|
Packit Service |
db8eaa |
_snd_pcm_plug_open()
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
*/
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
/**
|
|
Packit Service |
db8eaa |
* \brief Creates a new Plug PCM
|
|
Packit Service |
db8eaa |
* \param pcmp Returns created PCM handle
|
|
Packit Service |
db8eaa |
* \param name Name of PCM
|
|
Packit Service |
db8eaa |
* \param root Root configuration node
|
|
Packit Service |
db8eaa |
* \param conf Configuration node with Plug PCM description
|
|
Packit Service |
db8eaa |
* \param stream Stream type
|
|
Packit Service |
db8eaa |
* \param mode Stream mode
|
|
Packit Service |
db8eaa |
* \retval zero on success otherwise a negative error code
|
|
Packit Service |
db8eaa |
* \warning Using of this function might be dangerous in the sense
|
|
Packit Service |
db8eaa |
* of compatibility reasons. The prototype might be freely
|
|
Packit Service |
db8eaa |
* changed in future.
|
|
Packit Service |
db8eaa |
*/
|
|
Packit Service |
db8eaa |
int _snd_pcm_plug_open(snd_pcm_t **pcmp, const char *name,
|
|
Packit Service |
db8eaa |
snd_config_t *root, snd_config_t *conf,
|
|
Packit Service |
db8eaa |
snd_pcm_stream_t stream, int mode)
|
|
Packit Service |
db8eaa |
{
|
|
Packit Service |
db8eaa |
snd_config_iterator_t i, next;
|
|
Packit Service |
db8eaa |
int err;
|
|
Packit Service |
db8eaa |
snd_pcm_t *spcm;
|
|
Packit Service |
db8eaa |
snd_config_t *slave = NULL, *sconf;
|
|
Packit Service |
db8eaa |
snd_config_t *tt = NULL;
|
|
Packit Service |
db8eaa |
enum snd_pcm_plug_route_policy route_policy = PLUG_ROUTE_POLICY_DEFAULT;
|
|
Packit Service |
db8eaa |
snd_pcm_route_ttable_entry_t *ttable = NULL;
|
|
Packit Service |
db8eaa |
unsigned int csize, ssize;
|
|
Packit Service |
db8eaa |
unsigned int cused, sused;
|
|
Packit Service |
db8eaa |
snd_pcm_format_t sformat = SND_PCM_FORMAT_UNKNOWN;
|
|
Packit Service |
db8eaa |
int schannels = -1, srate = -1;
|
|
Packit Service |
db8eaa |
const snd_config_t *rate_converter = NULL;
|
|
Packit Service |
db8eaa |
|
|
Packit Service |
db8eaa |
snd_config_for_each(i, next, conf) {
|
|
Packit Service |
db8eaa |
snd_config_t *n = snd_config_iterator_entry(i);
|
|
Packit Service |
db8eaa |
const char *id;
|
|
Packit Service |
db8eaa |
if (snd_config_get_id(n, &id) < 0)
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
if (snd_pcm_conf_generic_id(id))
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
if (strcmp(id, "slave") == 0) {
|
|
Packit Service |
db8eaa |
slave = n;
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ROUTE
|
|
Packit Service |
db8eaa |
if (strcmp(id, "ttable") == 0) {
|
|
Packit Service |
db8eaa |
route_policy = PLUG_ROUTE_POLICY_NONE;
|
|
Packit Service |
db8eaa |
if (snd_config_get_type(n) != SND_CONFIG_TYPE_COMPOUND) {
|
|
Packit Service |
db8eaa |
SNDERR("Invalid type for %s", id);
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
tt = n;
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (strcmp(id, "route_policy") == 0) {
|
|
Packit Service |
db8eaa |
const char *str;
|
|
Packit Service |
db8eaa |
if ((err = snd_config_get_string(n, &str)) < 0) {
|
|
Packit Service |
db8eaa |
SNDERR("Invalid type for %s", id);
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (tt != NULL)
|
|
Packit Service |
db8eaa |
SNDERR("Table is defined, route policy is ignored");
|
|
Packit Service |
db8eaa |
if (!strcmp(str, "default"))
|
|
Packit Service |
db8eaa |
route_policy = PLUG_ROUTE_POLICY_DEFAULT;
|
|
Packit Service |
db8eaa |
else if (!strcmp(str, "average"))
|
|
Packit Service |
db8eaa |
route_policy = PLUG_ROUTE_POLICY_AVERAGE;
|
|
Packit Service |
db8eaa |
else if (!strcmp(str, "copy"))
|
|
Packit Service |
db8eaa |
route_policy = PLUG_ROUTE_POLICY_COPY;
|
|
Packit Service |
db8eaa |
else if (!strcmp(str, "duplicate"))
|
|
Packit Service |
db8eaa |
route_policy = PLUG_ROUTE_POLICY_DUP;
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_RATE
|
|
Packit Service |
db8eaa |
if (strcmp(id, "rate_converter") == 0) {
|
|
Packit Service |
db8eaa |
rate_converter = n;
|
|
Packit Service |
db8eaa |
continue;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
#endif
|
|
Packit Service |
db8eaa |
SNDERR("Unknown field %s", id);
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
if (!slave) {
|
|
Packit Service |
db8eaa |
SNDERR("slave is not defined");
|
|
Packit Service |
db8eaa |
return -EINVAL;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
err = snd_pcm_slave_conf(root, slave, &sconf, 3,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_FORMAT, SCONF_UNCHANGED, &sformat,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_CHANNELS, SCONF_UNCHANGED, &schannels,
|
|
Packit Service |
db8eaa |
SND_PCM_HW_PARAM_RATE, SCONF_UNCHANGED, &srate);
|
|
Packit Service |
db8eaa |
if (err < 0)
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_ROUTE
|
|
Packit Service |
db8eaa |
if (tt) {
|
|
Packit Service |
db8eaa |
err = snd_pcm_route_determine_ttable(tt, &csize, &ssize);
|
|
Packit Service |
db8eaa |
if (err < 0) {
|
|
Packit Service |
db8eaa |
snd_config_delete(sconf);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
ttable = malloc(csize * ssize * sizeof(*ttable));
|
|
Packit Service |
db8eaa |
if (ttable == NULL) {
|
|
Packit Service |
db8eaa |
snd_config_delete(sconf);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
err = snd_pcm_route_load_ttable(tt, ttable, csize, ssize, &cused, &sused, -1);
|
|
Packit Service |
db8eaa |
if (err < 0) {
|
|
Packit Service |
db8eaa |
snd_config_delete(sconf);
|
|
Packit Service |
db8eaa |
return err;
|
|
Packit Service |
db8eaa |
}
|
|
Packit Service |
db8eaa |
}
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Packit Service |
db8eaa |
#endif
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Packit Service |
db8eaa |
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Packit Service |
db8eaa |
#ifdef BUILD_PCM_PLUGIN_RATE
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db8eaa |
if (! rate_converter)
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Packit Service |
db8eaa |
rate_converter = snd_pcm_rate_get_default_converter(root);
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db8eaa |
#endif
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Packit Service |
db8eaa |
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db8eaa |
err = snd_pcm_open_slave(&spcm, root, sconf, stream, mode, conf);
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db8eaa |
snd_config_delete(sconf);
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db8eaa |
if (err < 0)
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db8eaa |
return err;
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Packit Service |
db8eaa |
err = snd_pcm_plug_open(pcmp, name, sformat, schannels, srate, rate_converter,
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Packit Service |
db8eaa |
route_policy, ttable, ssize, cused, sused, spcm, 1);
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db8eaa |
if (err < 0)
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db8eaa |
snd_pcm_close(spcm);
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db8eaa |
return err;
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Packit Service |
db8eaa |
}
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db8eaa |
#ifndef DOC_HIDDEN
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Packit Service |
db8eaa |
SND_DLSYM_BUILD_VERSION(_snd_pcm_plug_open, SND_PCM_DLSYM_VERSION);
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Packit Service |
db8eaa |
#endif
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