diff options
Diffstat (limited to 'src/filter_plugin.c')
-rw-r--r-- | src/filter_plugin.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/filter_plugin.c b/src/filter_plugin.c new file mode 100644 index 000000000..21cb2f277 --- /dev/null +++ b/src/filter_plugin.c @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2003-2009 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "filter_plugin.h" +#include "filter_internal.h" +#include "filter_registry.h" +#include "conf.h" + +#ifndef NDEBUG +#include "audio_format.h" +#endif + +#include <assert.h> + +struct filter * +filter_new(const struct filter_plugin *plugin, + const struct config_param *param, GError **error_r) +{ + assert(plugin != NULL); + assert(error_r == NULL || *error_r == NULL); + + return plugin->init(param, error_r); +} + +struct filter * +filter_configured_new(const struct config_param *param, GError **error_r) +{ + const char *plugin_name; + const struct filter_plugin *plugin; + + assert(param != NULL); + assert(error_r == NULL || *error_r == NULL); + + plugin_name = config_get_block_string(param, "plugin", NULL); + if (plugin_name == NULL) { + g_set_error(error_r, config_quark(), 0, + "No filter plugin specified"); + return NULL; + } + + plugin = filter_plugin_by_name(plugin_name); + if (plugin == NULL) { + g_set_error(error_r, config_quark(), 0, + "No such filter plugin: %s", plugin_name); + return NULL; + } + + return filter_new(plugin, param, error_r); +} + +void +filter_free(struct filter *filter) +{ + assert(filter != NULL); + + filter->plugin->finish(filter); +} + +const struct audio_format * +filter_open(struct filter *filter, struct audio_format *audio_format, + GError **error_r) +{ + const struct audio_format *out_audio_format; + + assert(filter != NULL); + assert(audio_format != NULL); + assert(audio_format_valid(audio_format)); + assert(error_r == NULL || *error_r == NULL); + + out_audio_format = filter->plugin->open(filter, audio_format, error_r); + + assert(out_audio_format == NULL || audio_format_valid(audio_format)); + assert(out_audio_format == NULL || + audio_format_valid(out_audio_format)); + + return out_audio_format; +} + +void +filter_close(struct filter *filter) +{ + assert(filter != NULL); + + filter->plugin->close(filter); +} + +const void * +filter_filter(struct filter *filter, const void *src, size_t src_size, + size_t *dest_size_r, + GError **error_r) +{ + assert(filter != NULL); + assert(src != NULL); + assert(src_size > 0); + assert(dest_size_r != NULL); + assert(error_r == NULL || *error_r == NULL); + + return filter->plugin->filter(filter, src, src_size, dest_size_r, error_r); +} |