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-rw-r--r--src/output/plugins/PipeOutputPlugin.cxx143
1 files changed, 143 insertions, 0 deletions
diff --git a/src/output/plugins/PipeOutputPlugin.cxx b/src/output/plugins/PipeOutputPlugin.cxx
new file mode 100644
index 000000000..7a1f32258
--- /dev/null
+++ b/src/output/plugins/PipeOutputPlugin.cxx
@@ -0,0 +1,143 @@
+/*
+ * 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 "PipeOutputPlugin.hxx"
+#include "../OutputAPI.hxx"
+#include "config/ConfigError.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+
+#include <string>
+
+#include <stdio.h>
+
+struct PipeOutput {
+ AudioOutput base;
+
+ std::string cmd;
+ FILE *fh;
+
+ PipeOutput()
+ :base(pipe_output_plugin) {}
+
+ bool Initialize(const config_param &param, Error &error) {
+ return base.Configure(param, error);
+ }
+
+ bool Configure(const config_param &param, Error &error);
+};
+
+static constexpr Domain pipe_output_domain("pipe_output");
+
+inline bool
+PipeOutput::Configure(const config_param &param, Error &error)
+{
+ cmd = param.GetBlockValue("command", "");
+ if (cmd.empty()) {
+ error.Set(config_domain,
+ "No \"command\" parameter specified");
+ return false;
+ }
+
+ return true;
+}
+
+static AudioOutput *
+pipe_output_init(const config_param &param, Error &error)
+{
+ PipeOutput *pd = new PipeOutput();
+
+ if (!pd->Initialize(param, error)) {
+ delete pd;
+ return nullptr;
+ }
+
+ if (!pd->Configure(param, error)) {
+ delete pd;
+ return nullptr;
+ }
+
+ return &pd->base;
+}
+
+static void
+pipe_output_finish(AudioOutput *ao)
+{
+ PipeOutput *pd = (PipeOutput *)ao;
+
+ delete pd;
+}
+
+static bool
+pipe_output_open(AudioOutput *ao,
+ gcc_unused AudioFormat &audio_format,
+ Error &error)
+{
+ PipeOutput *pd = (PipeOutput *)ao;
+
+ pd->fh = popen(pd->cmd.c_str(), "w");
+ if (pd->fh == nullptr) {
+ error.FormatErrno("Error opening pipe \"%s\"",
+ pd->cmd.c_str());
+ return false;
+ }
+
+ return true;
+}
+
+static void
+pipe_output_close(AudioOutput *ao)
+{
+ PipeOutput *pd = (PipeOutput *)ao;
+
+ pclose(pd->fh);
+}
+
+static size_t
+pipe_output_play(AudioOutput *ao, const void *chunk, size_t size,
+ Error &error)
+{
+ PipeOutput *pd = (PipeOutput *)ao;
+ size_t ret;
+
+ ret = fwrite(chunk, 1, size, pd->fh);
+ if (ret == 0)
+ error.SetErrno("Write error on pipe");
+
+ return ret;
+}
+
+const struct AudioOutputPlugin pipe_output_plugin = {
+ "pipe",
+ nullptr,
+ pipe_output_init,
+ pipe_output_finish,
+ nullptr,
+ nullptr,
+ pipe_output_open,
+ pipe_output_close,
+ nullptr,
+ nullptr,
+ pipe_output_play,
+ nullptr,
+ nullptr,
+ nullptr,
+ nullptr,
+};