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authorMax Kellermann <max@duempel.org>2010-12-22 09:08:12 +0100
committerMax Kellermann <max@duempel.org>2010-12-22 09:48:48 +0100
commite3cba18532a24bf20a4174070159eef647057464 (patch)
treee7a2227f100071e22922ad7094b785c29513ab41 /src
parent9bf7fde49f0883356a4fded05b3fe72db8d3686a (diff)
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decoder: new "pcm" decoder plugin
Just there to support the "cdio_paranoia" input plugin.
Diffstat (limited to 'src')
-rw-r--r--src/decoder/pcm_decoder_plugin.c84
-rw-r--r--src/decoder/pcm_decoder_plugin.h33
-rw-r--r--src/decoder_list.c2
3 files changed, 119 insertions, 0 deletions
diff --git a/src/decoder/pcm_decoder_plugin.c b/src/decoder/pcm_decoder_plugin.c
new file mode 100644
index 000000000..f63f1ec46
--- /dev/null
+++ b/src/decoder/pcm_decoder_plugin.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2003-2010 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 "decoder/pcm_decoder_plugin.h"
+#include "decoder_api.h"
+
+#include <glib.h>
+#include <unistd.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "pcm"
+
+static void
+pcm_stream_decode(struct decoder *decoder, struct input_stream *is)
+{
+ static const struct audio_format audio_format = {
+ .sample_rate = 44100,
+ .format = SAMPLE_FORMAT_S16,
+ .channels = 2,
+ };
+ GError *error = NULL;
+ enum decoder_command cmd;
+
+ double time_to_size = audio_format_time_to_size(&audio_format);
+
+ float total_time = -1;
+ if (is->size >= 0)
+ total_time = is->size / time_to_size;
+
+ decoder_initialized(decoder, &audio_format, true, total_time);
+
+ do {
+ char buffer[4096];
+
+ size_t nbytes = decoder_read(decoder, is,
+ buffer, sizeof(buffer));
+ cmd = nbytes > 0
+ ? decoder_data(decoder, is,
+ buffer, nbytes, 0)
+ : decoder_get_command(decoder);
+ if (cmd == DECODE_COMMAND_SEEK) {
+ goffset offset = (goffset)(time_to_size *
+ decoder_seek_where(decoder));
+ if (input_stream_seek(is, offset, SEEK_SET, &error)) {
+ decoder_command_finished(decoder);
+ } else {
+ g_warning("seeking failed: %s", error->message);
+ g_error_free(error);
+ decoder_seek_error(decoder);
+ }
+
+ cmd = DECODE_COMMAND_NONE;
+ }
+ } while (cmd == DECODE_COMMAND_NONE);
+}
+
+static const char *const pcm_mime_types[] = {
+ /* for streams obtained by the cdio_paranoia input plugin */
+ "audio/x-mpd-cdda-pcm",
+ NULL
+};
+
+const struct decoder_plugin pcm_decoder_plugin = {
+ .name = "pcm",
+ .stream_decode = pcm_stream_decode,
+ .mime_types = pcm_mime_types,
+};
diff --git a/src/decoder/pcm_decoder_plugin.h b/src/decoder/pcm_decoder_plugin.h
new file mode 100644
index 000000000..716ae0c3e
--- /dev/null
+++ b/src/decoder/pcm_decoder_plugin.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2003-2010 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.
+ */
+
+/** \file
+ *
+ * Not really a decoder; this plugin forwards its input data "as-is".
+ *
+ * It was written only to support the "cdio_paranoia" input plugin,
+ * which does not need a decoder.
+ */
+
+#ifndef MPD_DECODER_PCM_H
+#define MPD_DECODER_PCM_H
+
+extern const struct decoder_plugin pcm_decoder_plugin;
+
+#endif
diff --git a/src/decoder_list.c b/src/decoder_list.c
index d76050023..4d8562be6 100644
--- a/src/decoder_list.c
+++ b/src/decoder_list.c
@@ -23,6 +23,7 @@
#include "utils.h"
#include "conf.h"
#include "mpd_error.h"
+#include "decoder/pcm_decoder_plugin.h"
#include <glib.h>
@@ -102,6 +103,7 @@ const struct decoder_plugin *const decoder_plugins[] = {
#ifdef HAVE_GME
&gme_decoder_plugin,
#endif
+ &pcm_decoder_plugin,
NULL
};