From 776413621165605b943248499e2a5a6662fb1a3b Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Thu, 31 Jan 2013 21:00:43 +0100 Subject: mixer/software, filter/volume: convert to C++ --- src/filter/VolumeFilterPlugin.cxx | 159 ++++++++++++++++++++++++++++++++++++++ src/filter/VolumeFilterPlugin.hxx | 31 ++++++++ src/filter/volume_filter_plugin.c | 158 ------------------------------------- src/filter/volume_filter_plugin.h | 31 -------- 4 files changed, 190 insertions(+), 189 deletions(-) create mode 100644 src/filter/VolumeFilterPlugin.cxx create mode 100644 src/filter/VolumeFilterPlugin.hxx delete mode 100644 src/filter/volume_filter_plugin.c delete mode 100644 src/filter/volume_filter_plugin.h (limited to 'src/filter') diff --git a/src/filter/VolumeFilterPlugin.cxx b/src/filter/VolumeFilterPlugin.cxx new file mode 100644 index 000000000..764d2453f --- /dev/null +++ b/src/filter/VolumeFilterPlugin.cxx @@ -0,0 +1,159 @@ +/* + * Copyright (C) 2003-2013 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 "VolumeFilterPlugin.hxx" +#include "filter_plugin.h" +#include "filter_internal.h" +#include "filter_registry.h" +#include "conf.h" +#include "pcm_buffer.h" +#include "pcm_volume.h" +#include "audio_format.h" + +#include +#include + +struct volume_filter { + struct filter filter; + + /** + * The current volume, from 0 to #PCM_VOLUME_1. + */ + unsigned volume; + + struct audio_format audio_format; + + struct pcm_buffer buffer; +}; + +static inline GQuark +volume_quark(void) +{ + return g_quark_from_static_string("pcm_volume"); +} + +static struct filter * +volume_filter_init(G_GNUC_UNUSED const struct config_param *param, + G_GNUC_UNUSED GError **error_r) +{ + struct volume_filter *filter = g_new(struct volume_filter, 1); + + filter_init(&filter->filter, &volume_filter_plugin); + filter->volume = PCM_VOLUME_1; + + return &filter->filter; +} + +static void +volume_filter_finish(struct filter *filter) +{ + g_free(filter); +} + +static const struct audio_format * +volume_filter_open(struct filter *_filter, struct audio_format *audio_format, + G_GNUC_UNUSED GError **error_r) +{ + struct volume_filter *filter = (struct volume_filter *)_filter; + + filter->audio_format = *audio_format; + pcm_buffer_init(&filter->buffer); + + return &filter->audio_format; +} + +static void +volume_filter_close(struct filter *_filter) +{ + struct volume_filter *filter = (struct volume_filter *)_filter; + + pcm_buffer_deinit(&filter->buffer); +} + +static const void * +volume_filter_filter(struct filter *_filter, const void *src, size_t src_size, + size_t *dest_size_r, GError **error_r) +{ + struct volume_filter *filter = (struct volume_filter *)_filter; + bool success; + void *dest; + + *dest_size_r = src_size; + + if (filter->volume >= PCM_VOLUME_1) + /* optimized special case: 100% volume = no-op */ + return src; + + dest = pcm_buffer_get(&filter->buffer, src_size); + + if (filter->volume <= 0) { + /* optimized special case: 0% volume = memset(0) */ + /* XXX is this valid for all sample formats? What + about floating point? */ + memset(dest, 0, src_size); + return dest; + } + + memcpy(dest, src, src_size); + + success = pcm_volume(dest, src_size, + sample_format(filter->audio_format.format), + filter->volume); + if (!success) { + g_set_error(error_r, volume_quark(), 0, + "pcm_volume() has failed"); + return NULL; + } + + return dest; +} + +const struct filter_plugin volume_filter_plugin = { + "volume", + volume_filter_init, + volume_filter_finish, + volume_filter_open, + volume_filter_close, + volume_filter_filter, +}; + +unsigned +volume_filter_get(const struct filter *_filter) +{ + const struct volume_filter *filter = + (const struct volume_filter *)_filter; + + assert(filter->filter.plugin == &volume_filter_plugin); + assert(filter->volume <= PCM_VOLUME_1); + + return filter->volume; +} + +void +volume_filter_set(struct filter *_filter, unsigned volume) +{ + struct volume_filter *filter = (struct volume_filter *)_filter; + + assert(filter->filter.plugin == &volume_filter_plugin); + assert(volume <= PCM_VOLUME_1); + + filter->volume = volume; +} + diff --git a/src/filter/VolumeFilterPlugin.hxx b/src/filter/VolumeFilterPlugin.hxx new file mode 100644 index 000000000..e3d29b87d --- /dev/null +++ b/src/filter/VolumeFilterPlugin.hxx @@ -0,0 +1,31 @@ +/* + * Copyright (C) 2003-2013 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. + */ + +#ifndef MPD_VOLUME_FILTER_PLUGIN_HXX +#define MPD_VOLUME_FILTER_PLUGIN_HXX + +struct filter; + +unsigned +volume_filter_get(const struct filter *filter); + +void +volume_filter_set(struct filter *filter, unsigned volume); + +#endif diff --git a/src/filter/volume_filter_plugin.c b/src/filter/volume_filter_plugin.c deleted file mode 100644 index 3260e8989..000000000 --- a/src/filter/volume_filter_plugin.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Copyright (C) 2003-2011 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/volume_filter_plugin.h" -#include "filter_plugin.h" -#include "filter_internal.h" -#include "filter_registry.h" -#include "conf.h" -#include "pcm_buffer.h" -#include "pcm_volume.h" -#include "audio_format.h" - -#include -#include - -struct volume_filter { - struct filter filter; - - /** - * The current volume, from 0 to #PCM_VOLUME_1. - */ - unsigned volume; - - struct audio_format audio_format; - - struct pcm_buffer buffer; -}; - -static inline GQuark -volume_quark(void) -{ - return g_quark_from_static_string("pcm_volume"); -} - -static struct filter * -volume_filter_init(G_GNUC_UNUSED const struct config_param *param, - G_GNUC_UNUSED GError **error_r) -{ - struct volume_filter *filter = g_new(struct volume_filter, 1); - - filter_init(&filter->filter, &volume_filter_plugin); - filter->volume = PCM_VOLUME_1; - - return &filter->filter; -} - -static void -volume_filter_finish(struct filter *filter) -{ - g_free(filter); -} - -static const struct audio_format * -volume_filter_open(struct filter *_filter, struct audio_format *audio_format, - G_GNUC_UNUSED GError **error_r) -{ - struct volume_filter *filter = (struct volume_filter *)_filter; - - filter->audio_format = *audio_format; - pcm_buffer_init(&filter->buffer); - - return &filter->audio_format; -} - -static void -volume_filter_close(struct filter *_filter) -{ - struct volume_filter *filter = (struct volume_filter *)_filter; - - pcm_buffer_deinit(&filter->buffer); -} - -static const void * -volume_filter_filter(struct filter *_filter, const void *src, size_t src_size, - size_t *dest_size_r, GError **error_r) -{ - struct volume_filter *filter = (struct volume_filter *)_filter; - bool success; - void *dest; - - *dest_size_r = src_size; - - if (filter->volume >= PCM_VOLUME_1) - /* optimized special case: 100% volume = no-op */ - return src; - - dest = pcm_buffer_get(&filter->buffer, src_size); - - if (filter->volume <= 0) { - /* optimized special case: 0% volume = memset(0) */ - /* XXX is this valid for all sample formats? What - about floating point? */ - memset(dest, 0, src_size); - return dest; - } - - memcpy(dest, src, src_size); - - success = pcm_volume(dest, src_size, filter->audio_format.format, - filter->volume); - if (!success) { - g_set_error(error_r, volume_quark(), 0, - "pcm_volume() has failed"); - return NULL; - } - - return dest; -} - -const struct filter_plugin volume_filter_plugin = { - .name = "volume", - .init = volume_filter_init, - .finish = volume_filter_finish, - .open = volume_filter_open, - .close = volume_filter_close, - .filter = volume_filter_filter, -}; - -unsigned -volume_filter_get(const struct filter *_filter) -{ - const struct volume_filter *filter = - (const struct volume_filter *)_filter; - - assert(filter->filter.plugin == &volume_filter_plugin); - assert(filter->volume <= PCM_VOLUME_1); - - return filter->volume; -} - -void -volume_filter_set(struct filter *_filter, unsigned volume) -{ - struct volume_filter *filter = (struct volume_filter *)_filter; - - assert(filter->filter.plugin == &volume_filter_plugin); - assert(volume <= PCM_VOLUME_1); - - filter->volume = volume; -} - diff --git a/src/filter/volume_filter_plugin.h b/src/filter/volume_filter_plugin.h deleted file mode 100644 index 5b16f7e57..000000000 --- a/src/filter/volume_filter_plugin.h +++ /dev/null @@ -1,31 +0,0 @@ -/* - * Copyright (C) 2003-2011 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. - */ - -#ifndef VOLUME_FILTER_PLUGIN_H -#define VOLUME_FILTER_PLUGIN_H - -struct filter; - -unsigned -volume_filter_get(const struct filter *filter); - -void -volume_filter_set(struct filter *filter, unsigned volume); - -#endif -- cgit v1.2.3