b54bde6f2b
Make the audio_format argument non-const. Allow the open() method to modify it, to indicate that it wants a different input audio format than the one specified. Check that condition in chain_filter_open(), and fail.
117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "filter_plugin.h"
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#include "filter_internal.h"
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#include "filter_registry.h"
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#include "conf.h"
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#ifndef NDEBUG
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#include "audio_format.h"
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#endif
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#include <assert.h>
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struct filter *
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filter_new(const struct filter_plugin *plugin,
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const struct config_param *param, GError **error_r)
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{
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assert(plugin != NULL);
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assert(error_r == NULL || *error_r == NULL);
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return plugin->init(param, error_r);
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}
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struct filter *
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filter_configured_new(const struct config_param *param, GError **error_r)
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{
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const char *plugin_name;
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const struct filter_plugin *plugin;
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assert(param != NULL);
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assert(error_r == NULL || *error_r == NULL);
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plugin_name = config_get_block_string(param, "plugin", NULL);
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if (plugin_name == NULL) {
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g_set_error(error_r, config_quark(), 0,
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"No filter plugin specified");
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return NULL;
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}
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plugin = filter_plugin_by_name(plugin_name);
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if (plugin == NULL) {
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g_set_error(error_r, config_quark(), 0,
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"No such filter plugin: %s", plugin_name);
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return NULL;
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}
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return filter_new(plugin, param, error_r);
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}
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void
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filter_free(struct filter *filter)
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{
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assert(filter != NULL);
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filter->plugin->finish(filter);
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}
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const struct audio_format *
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filter_open(struct filter *filter, struct audio_format *audio_format,
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GError **error_r)
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{
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const struct audio_format *out_audio_format;
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assert(filter != NULL);
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assert(audio_format != NULL);
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assert(audio_format_valid(audio_format));
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assert(error_r == NULL || *error_r == NULL);
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out_audio_format = filter->plugin->open(filter, audio_format, error_r);
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assert(out_audio_format == NULL || audio_format_valid(audio_format));
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assert(out_audio_format == NULL ||
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audio_format_valid(out_audio_format));
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return out_audio_format;
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}
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void
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filter_close(struct filter *filter)
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{
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assert(filter != NULL);
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filter->plugin->close(filter);
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}
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const void *
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filter_filter(struct filter *filter, const void *src, size_t src_size,
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size_t *dest_size_r,
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GError **error_r)
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{
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assert(filter != NULL);
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assert(src != NULL);
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assert(src_size > 0);
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assert(dest_size_r != NULL);
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assert(error_r == NULL || *error_r == NULL);
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return filter->plugin->filter(filter, src, src_size, dest_size_r, error_r);
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}
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