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ec40aafa43
The topology source files had the wrong licence specified in the comments when initially upstreamed. The topology source files are all licensed under the LGPL-2.1 and not the GPLv2. All earlier versions of the alsa-lib topology source files must be considered LGPL-2.1 like the other source files in alsa-lib and also as specified in the alsa-lib COPYING file. Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/*
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Copyright(c) 2014-2015 Intel Corporation
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All rights reserved.
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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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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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Authors: Mengdong Lin <mengdong.lin@intel.com>
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Yao Jin <yao.jin@intel.com>
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Liam Girdwood <liam.r.girdwood@linux.intel.com>
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*/
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#include "list.h"
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#include "tplg_local.h"
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/* mapping of channel text names to types */
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static const struct map_elem channel_map[] = {
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{"mono", SNDRV_CHMAP_MONO}, /* mono stream */
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{"fl", SNDRV_CHMAP_FL}, /* front left */
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{"fr", SNDRV_CHMAP_FR}, /* front right */
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{"rl", SNDRV_CHMAP_RL}, /* rear left */
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{"rr", SNDRV_CHMAP_RR}, /* rear right */
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{"fc", SNDRV_CHMAP_FC}, /* front center */
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{"lfe", SNDRV_CHMAP_LFE}, /* LFE */
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{"sl", SNDRV_CHMAP_SL}, /* side left */
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{"sr", SNDRV_CHMAP_SR}, /* side right */
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{"rc", SNDRV_CHMAP_RC}, /* rear center */
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{"flc", SNDRV_CHMAP_FLC}, /* front left center */
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{"frc", SNDRV_CHMAP_FRC}, /* front right center */
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{"rlc", SNDRV_CHMAP_RLC}, /* rear left center */
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{"rrc", SNDRV_CHMAP_RRC}, /* rear right center */
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{"flw", SNDRV_CHMAP_FLW}, /* front left wide */
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{"frw", SNDRV_CHMAP_FRW}, /* front right wide */
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{"flh", SNDRV_CHMAP_FLH}, /* front left high */
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{"fch", SNDRV_CHMAP_FCH}, /* front center high */
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{"frh", SNDRV_CHMAP_FRH}, /* front right high */
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{"tc", SNDRV_CHMAP_TC}, /* top center */
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{"tfl", SNDRV_CHMAP_TFL}, /* top front left */
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{"tfr", SNDRV_CHMAP_TFR}, /* top front right */
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{"tfc", SNDRV_CHMAP_TFC}, /* top front center */
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{"trl", SNDRV_CHMAP_TRL}, /* top rear left */
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{"trr", SNDRV_CHMAP_TRR}, /* top rear right */
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{"trc", SNDRV_CHMAP_TRC}, /* top rear center */
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{"tflc", SNDRV_CHMAP_TFLC}, /* top front left center */
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{"tfrc", SNDRV_CHMAP_TFRC}, /* top front right center */
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{"tsl", SNDRV_CHMAP_TSL}, /* top side left */
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{"tsr", SNDRV_CHMAP_TSR}, /* top side right */
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{"llfe", SNDRV_CHMAP_LLFE}, /* left LFE */
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{"rlfe", SNDRV_CHMAP_RLFE}, /* right LFE */
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{"bc", SNDRV_CHMAP_BC}, /* bottom center */
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{"blc", SNDRV_CHMAP_BLC}, /* bottom left center */
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{"brc", SNDRV_CHMAP_BRC}, /* bottom right center */
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};
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static int lookup_channel(const char *c)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(channel_map); i++) {
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if (strcasecmp(channel_map[i].name, c) == 0) {
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return channel_map[i].id;
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}
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}
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return -EINVAL;
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}
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/* Parse a channel mapping. */
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int tplg_parse_channel(snd_tplg_t *tplg,
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snd_config_t *cfg, void *private)
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{
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snd_config_iterator_t i, next;
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snd_config_t *n;
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struct snd_soc_tplg_channel *channel = private;
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const char *id, *value;
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int channel_id;
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if (tplg->channel_idx >= SND_SOC_TPLG_MAX_CHAN)
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return -EINVAL;
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channel += tplg->channel_idx;
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snd_config_get_id(cfg, &id);
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tplg_dbg("\tChannel %s at index %d\n", id, tplg->channel_idx);
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channel_id = lookup_channel(id);
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if (channel_id < 0) {
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SNDERR("error: invalid channel %s\n", id);
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return -EINVAL;
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}
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channel->id = channel_id;
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channel->size = sizeof(*channel);
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tplg_dbg("\tChan %s = %d\n", id, channel->id);
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snd_config_for_each(i, next, cfg) {
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n = snd_config_iterator_entry(i);
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/* get id */
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if (snd_config_get_id(n, &id) < 0)
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continue;
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/* get value */
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if (snd_config_get_string(n, &value) < 0)
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continue;
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if (strcmp(id, "reg") == 0)
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channel->reg = atoi(value);
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else if (strcmp(id, "shift") == 0)
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channel->shift = atoi(value);
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tplg_dbg("\t\t%s = %s\n", id, value);
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}
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tplg->channel_idx++;
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return 0;
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}
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