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// gst-plugin/gst-audio-source.h
// Copyright 2013 Tanel Alumae, Tallinn University of Technology
// See ../../COPYING for clarification regarding multiple authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing permissions and
// limitations under the License.
#ifndef KALDI_GST_PLUGIN_GST_AUDIO_SOURCE_H_
#define KALDI_GST_PLUGIN_GST_AUDIO_SOURCE_H_
#include <matrix/kaldi-vector.h>
#include <gst/gst.h>
namespace kaldi {
// OnlineAudioSourceItf implementation using a queue of Gst Buffers
class GstBufferSource {
public:
typedef int16 SampleType; // hardcoded 16-bit audio
GstBufferSource();
// Implementation of the OnlineAudioSourceItf
bool Read(Vector<BaseFloat> *data);
void PushBuffer(GstBuffer *buf);
void SetEnded(bool ended);
~GstBufferSource();
private:
GAsyncQueue* buf_queue_;
gint pos_in_current_buf_;
GstBuffer *current_buffer_;
bool ended_;
GMutex lock_;
GCond data_cond_;
KALDI_DISALLOW_COPY_AND_ASSIGN(GstBufferSource);
};
} // namespace kaldi
#endif // KALDI_GST_PLUGIN_GST_AUDIO_SOURCE_H_