diff options
| -rw-r--r-- | Makefile.am | 2 | ||||
| -rw-r--r-- | src/filter/normalize_filter_plugin.c | 123 | ||||
| -rw-r--r-- | src/filter_registry.c | 1 | ||||
| -rw-r--r-- | src/filter_registry.h | 1 |
4 files changed, 127 insertions, 0 deletions
diff --git a/Makefile.am b/Makefile.am index 96eb31265..eaea75666 100644 --- a/Makefile.am +++ b/Makefile.am @@ -706,6 +706,7 @@ FILTER_SRC = \ src/filter/chain_filter_plugin.c \ src/filter/convert_filter_plugin.c \ src/filter/route_filter_plugin.c \ + src/filter/normalize_filter_plugin.c \ src/filter/volume_filter_plugin.c @@ -843,6 +844,7 @@ test_run_filter_SOURCES = test/run_filter.c \ src/audio_check.c \ src/audio_format.c \ src/audio_parser.c \ + src/AudioCompress/compress.c \ $(FILTER_SRC) if HAVE_LIBSAMPLERATE diff --git a/src/filter/normalize_filter_plugin.c b/src/filter/normalize_filter_plugin.c new file mode 100644 index 000000000..2694646ee --- /dev/null +++ b/src/filter/normalize_filter_plugin.c @@ -0,0 +1,123 @@ +/* + * 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 "pcm_buffer.h" +#include "audio_format.h" +#include "AudioCompress/compress.h" + +#include <assert.h> +#include <string.h> + +struct normalize_filter { + struct filter filter; + + struct Compressor *compressor; + + struct pcm_buffer buffer; +}; + +static inline GQuark +normalize_quark(void) +{ + return g_quark_from_static_string("normalize"); +} + +static struct filter * +normalize_filter_init(G_GNUC_UNUSED const struct config_param *param, + G_GNUC_UNUSED GError **error_r) +{ + struct normalize_filter *filter = g_new(struct normalize_filter, 1); + + filter_init(&filter->filter, &normalize_filter_plugin); + + return &filter->filter; +} + +static void +normalize_filter_finish(struct filter *filter) +{ + g_free(filter); +} + +static const struct audio_format * +normalize_filter_open(struct filter *_filter, + const struct audio_format *audio_format, + GError **error_r) +{ + struct normalize_filter *filter = (struct normalize_filter *)_filter; + + if (audio_format->format != SAMPLE_FORMAT_S16) { + g_set_error(error_r, normalize_quark(), 0, + "Unsupported audio format"); + return false; + } + + if (audio_format->reverse_endian) { + g_set_error(error_r, normalize_quark(), 0, + "Normalize for reverse endian " + "samples is not implemented"); + return false; + } + + filter->compressor = Compressor_new(0); + + pcm_buffer_init(&filter->buffer); + + return audio_format; +} + +static void +normalize_filter_close(struct filter *_filter) +{ + struct normalize_filter *filter = (struct normalize_filter *)_filter; + + pcm_buffer_deinit(&filter->buffer); + Compressor_delete(filter->compressor); +} + +static const void * +normalize_filter_filter(struct filter *_filter, + const void *src, size_t src_size, size_t *dest_size_r, + G_GNUC_UNUSED GError **error_r) +{ + struct normalize_filter *filter = (struct normalize_filter *)_filter; + void *dest; + + dest = pcm_buffer_get(&filter->buffer, src_size); + + memcpy(dest, src, src_size); + + Compressor_Process_int16(filter->compressor, dest, src_size / 2); + + *dest_size_r = src_size; + return dest; +} + +const struct filter_plugin normalize_filter_plugin = { + .name = "normalize", + .init = normalize_filter_init, + .finish = normalize_filter_finish, + .open = normalize_filter_open, + .close = normalize_filter_close, + .filter = normalize_filter_filter, +}; diff --git a/src/filter_registry.c b/src/filter_registry.c index 2685b3249..e428e1cdc 100644 --- a/src/filter_registry.c +++ b/src/filter_registry.c @@ -28,6 +28,7 @@ const struct filter_plugin *const filter_plugins[] = { &null_filter_plugin, &chain_filter_plugin, &route_filter_plugin, + &normalize_filter_plugin, &volume_filter_plugin, NULL, }; diff --git a/src/filter_registry.h b/src/filter_registry.h index aab410581..8651f7938 100644 --- a/src/filter_registry.h +++ b/src/filter_registry.h @@ -30,6 +30,7 @@ extern const struct filter_plugin null_filter_plugin; extern const struct filter_plugin chain_filter_plugin; extern const struct filter_plugin convert_filter_plugin; extern const struct filter_plugin route_filter_plugin; +extern const struct filter_plugin normalize_filter_plugin; extern const struct filter_plugin volume_filter_plugin; const struct filter_plugin * |