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-rw-r--r--src/input/plugins/FfmpegInputPlugin.cxx154
1 files changed, 154 insertions, 0 deletions
diff --git a/src/input/plugins/FfmpegInputPlugin.cxx b/src/input/plugins/FfmpegInputPlugin.cxx
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+++ b/src/input/plugins/FfmpegInputPlugin.cxx
@@ -0,0 +1,154 @@
+/*
+ * 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.
+ */
+
+/* necessary because libavutil/common.h uses UINT64_C */
+#define __STDC_CONSTANT_MACROS
+
+#include "config.h"
+#include "FfmpegInputPlugin.hxx"
+#include "lib/ffmpeg/Domain.hxx"
+#include "lib/ffmpeg/Error.hxx"
+#include "../InputStream.hxx"
+#include "../InputPlugin.hxx"
+#include "util/StringUtil.hxx"
+#include "util/Error.hxx"
+
+extern "C" {
+#include <libavformat/avio.h>
+#include <libavformat/avformat.h>
+}
+
+struct FfmpegInputStream final : public InputStream {
+ AVIOContext *h;
+
+ bool eof;
+
+ FfmpegInputStream(const char *_uri, Mutex &_mutex, Cond &_cond,
+ AVIOContext *_h)
+ :InputStream(_uri, _mutex, _cond),
+ h(_h), eof(false) {
+ seekable = (h->seekable & AVIO_SEEKABLE_NORMAL) != 0;
+ size = avio_size(h);
+
+ /* hack to make MPD select the "ffmpeg" decoder plugin
+ - since avio.h doesn't tell us the MIME type of the
+ resource, we can't select a decoder plugin, but the
+ "ffmpeg" plugin is quite good at auto-detection */
+ SetMimeType("audio/x-mpd-ffmpeg");
+ SetReady();
+ }
+
+ ~FfmpegInputStream() {
+ avio_close(h);
+ }
+
+ /* virtual methods from InputStream */
+ bool IsEOF() override;
+ size_t Read(void *ptr, size_t size, Error &error) override;
+ bool Seek(offset_type offset, Error &error) override;
+};
+
+static inline bool
+input_ffmpeg_supported(void)
+{
+ void *opaque = nullptr;
+ return avio_enum_protocols(&opaque, 0) != nullptr;
+}
+
+static InputPlugin::InitResult
+input_ffmpeg_init(gcc_unused const config_param &param,
+ Error &error)
+{
+ av_register_all();
+
+ /* disable this plugin if there's no registered protocol */
+ if (!input_ffmpeg_supported()) {
+ error.Set(ffmpeg_domain, "No protocol");
+ return InputPlugin::InitResult::UNAVAILABLE;
+ }
+
+ return InputPlugin::InitResult::SUCCESS;
+}
+
+static InputStream *
+input_ffmpeg_open(const char *uri,
+ Mutex &mutex, Cond &cond,
+ Error &error)
+{
+ if (!StringStartsWith(uri, "gopher://") &&
+ !StringStartsWith(uri, "rtp://") &&
+ !StringStartsWith(uri, "rtsp://") &&
+ !StringStartsWith(uri, "rtmp://") &&
+ !StringStartsWith(uri, "rtmpt://") &&
+ !StringStartsWith(uri, "rtmps://"))
+ return nullptr;
+
+ AVIOContext *h;
+ auto result = avio_open(&h, uri, AVIO_FLAG_READ);
+ if (result != 0) {
+ SetFfmpegError(error, result);
+ return nullptr;
+ }
+
+ return new FfmpegInputStream(uri, mutex, cond, h);
+}
+
+size_t
+FfmpegInputStream::Read(void *ptr, size_t read_size, Error &error)
+{
+ auto result = avio_read(h, (unsigned char *)ptr, read_size);
+ if (result <= 0) {
+ if (result < 0)
+ SetFfmpegError(error, result, "avio_read() failed");
+
+ eof = true;
+ return false;
+ }
+
+ offset += result;
+ return (size_t)result;
+}
+
+bool
+FfmpegInputStream::IsEOF()
+{
+ return eof;
+}
+
+bool
+FfmpegInputStream::Seek(offset_type new_offset, Error &error)
+{
+ auto result = avio_seek(h, new_offset, SEEK_SET);
+
+ if (result < 0) {
+ SetFfmpegError(error, result, "avio_seek() failed");
+ return false;
+ }
+
+ offset = result;
+ eof = false;
+ return true;
+}
+
+const InputPlugin input_plugin_ffmpeg = {
+ "ffmpeg",
+ input_ffmpeg_init,
+ nullptr,
+ input_ffmpeg_open,
+};