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authorMax Kellermann <max@duempel.org>2014-01-24 00:02:24 +0100
committerMax Kellermann <max@duempel.org>2014-01-24 00:02:24 +0100
commit51adaf2c47761e3f2095a52a7037cd8458b77990 (patch)
tree46d78d52708a1f75460908187a239cc5c60d1858 /src/decoder/plugins/WildmidiDecoderPlugin.cxx
parentea5b901bcce20949a8d1fd622a7b03ff6f56ae20 (diff)
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decoder/*: move to decoder/plugins/
Diffstat (limited to 'src/decoder/plugins/WildmidiDecoderPlugin.cxx')
-rw-r--r--src/decoder/plugins/WildmidiDecoderPlugin.cxx158
1 files changed, 158 insertions, 0 deletions
diff --git a/src/decoder/plugins/WildmidiDecoderPlugin.cxx b/src/decoder/plugins/WildmidiDecoderPlugin.cxx
new file mode 100644
index 000000000..9a6018022
--- /dev/null
+++ b/src/decoder/plugins/WildmidiDecoderPlugin.cxx
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2003-2014 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 "WildmidiDecoderPlugin.hxx"
+#include "../DecoderAPI.hxx"
+#include "tag/TagHandler.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+#include "fs/AllocatedPath.hxx"
+#include "fs/FileSystem.hxx"
+#include "system/FatalError.hxx"
+#include "Log.hxx"
+
+extern "C" {
+#include <wildmidi_lib.h>
+}
+
+static constexpr Domain wildmidi_domain("wildmidi");
+
+static constexpr unsigned WILDMIDI_SAMPLE_RATE = 48000;
+
+static bool
+wildmidi_init(const config_param &param)
+{
+ Error error;
+ const AllocatedPath path =
+ param.GetBlockPath("config_file",
+ "/etc/timidity/timidity.cfg",
+ error);
+ if (path.IsNull())
+ FatalError(error);
+
+ if (!FileExists(path)) {
+ const auto utf8 = path.ToUTF8();
+ FormatDebug(wildmidi_domain,
+ "configuration file does not exist: %s",
+ utf8.c_str());
+ return false;
+ }
+
+ return WildMidi_Init(path.c_str(), WILDMIDI_SAMPLE_RATE, 0) == 0;
+}
+
+static void
+wildmidi_finish(void)
+{
+ WildMidi_Shutdown();
+}
+
+static void
+wildmidi_file_decode(Decoder &decoder, const char *path_fs)
+{
+ static constexpr AudioFormat audio_format = {
+ WILDMIDI_SAMPLE_RATE,
+ SampleFormat::S16,
+ 2,
+ };
+ midi *wm;
+ const struct _WM_Info *info;
+
+ wm = WildMidi_Open(path_fs);
+ if (wm == nullptr)
+ return;
+
+ info = WildMidi_GetInfo(wm);
+ if (info == nullptr) {
+ WildMidi_Close(wm);
+ return;
+ }
+
+ decoder_initialized(decoder, audio_format, true,
+ info->approx_total_samples / WILDMIDI_SAMPLE_RATE);
+
+ DecoderCommand cmd;
+ do {
+ char buffer[4096];
+ int len;
+
+ info = WildMidi_GetInfo(wm);
+ if (info == nullptr)
+ break;
+
+ len = WildMidi_GetOutput(wm, buffer, sizeof(buffer));
+ if (len <= 0)
+ break;
+
+ cmd = decoder_data(decoder, nullptr, buffer, len, 0);
+
+ if (cmd == DecoderCommand::SEEK) {
+ unsigned long seek_where = WILDMIDI_SAMPLE_RATE *
+ decoder_seek_where(decoder);
+
+ WildMidi_FastSeek(wm, &seek_where);
+ decoder_command_finished(decoder);
+ cmd = DecoderCommand::NONE;
+ }
+
+ } while (cmd == DecoderCommand::NONE);
+
+ WildMidi_Close(wm);
+}
+
+static bool
+wildmidi_scan_file(const char *path_fs,
+ const struct tag_handler *handler, void *handler_ctx)
+{
+ midi *wm = WildMidi_Open(path_fs);
+ if (wm == nullptr)
+ return false;
+
+ const struct _WM_Info *info = WildMidi_GetInfo(wm);
+ if (info == nullptr) {
+ WildMidi_Close(wm);
+ return false;
+ }
+
+ int duration = info->approx_total_samples / WILDMIDI_SAMPLE_RATE;
+ tag_handler_invoke_duration(handler, handler_ctx, duration);
+
+ WildMidi_Close(wm);
+
+ return true;
+}
+
+static const char *const wildmidi_suffixes[] = {
+ "mid",
+ nullptr
+};
+
+const struct DecoderPlugin wildmidi_decoder_plugin = {
+ "wildmidi",
+ wildmidi_init,
+ wildmidi_finish,
+ nullptr,
+ wildmidi_file_decode,
+ wildmidi_scan_file,
+ nullptr,
+ nullptr,
+ wildmidi_suffixes,
+ nullptr,
+};