Differential D2716 Diff 9120 extern/audaspace/plugins/ffmpeg/FFMPEGWriter.h

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extern/audaspace/plugins/ffmpeg/FFMPEGWriter.h

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				/*******************************************************************************
				* Copyright 2009-2016 Jörg Müller
				*
				* 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
				*
				* Unless required by applicable law or agreed to in writing, software
				* distributed under the License is distributed on an "AS IS" BASIS,
				* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
				* See the License for the specific language governing permissions and
				* limitations under the License.
				******************************************************************************/

				#pragma once

				#ifdef FFMPEG_PLUGIN
				#define AUD_BUILD_PLUGIN
				#endif

				/**
				* @file FFMPEGWriter.h
				* @ingroup plugin
				* The FFMPEGWriter class.
				*/

				#include "respec/ConverterFunctions.h"
				#include "util/Buffer.h"
				#include "file/IWriter.h"

				#include <string>

				struct AVCodecContext;
				extern "C" {
				#include <libavformat/avformat.h>
				}

				AUD_NAMESPACE_BEGIN

				/**
				* This class writes a sound file via ffmpeg.
				*/
				class AUD_PLUGIN_API FFMPEGWriter : public IWriter
				{
				private:
				/**
				* The current position in samples.
				*/
				int m_position;

				/**
				* The specification of the audio data.
				*/
				DeviceSpecs m_specs;

				/**
				* The AVFormatContext structure for using ffmpeg.
				*/
				AVFormatContext* m_formatCtx;

				/**
				* The AVCodecContext structure for using ffmpeg.
				*/
				AVCodecContext* m_codecCtx;

				/**
				* The AVOutputFormat structure for using ffmpeg.
				*/
				AVOutputFormat* m_outputFmt;

				/**
				* The AVStream structure for using ffmpeg.
				*/
				AVStream* m_stream;

				/**
				* The input buffer for the format converted data before encoding.
				*/
				Buffer m_input_buffer;

				/**
				* The buffer used for deinterleaving.
				*/
				Buffer m_deinterleave_buffer;

				/**
				* The count of input samples we have so far.
				*/
				unsigned int m_input_samples;

				/**
				* The count of input samples necessary to encode a packet.
				*/
				unsigned int m_input_size;

				/**
				* Whether the ouput has to be deinterleaved before writing.
				*/
				bool m_deinterleave;

				/**
				* Converter function.
				*/
				convert_f m_convert;

				// delete copy constructor and operator=
				FFMPEGWriter(const FFMPEGWriter&) = delete;
				FFMPEGWriter& operator=(const FFMPEGWriter&) = delete;

				/**
				* Encodes to the output buffer.
				*/
				AUD_LOCAL void encode();

				/**
				* Finishes writing to the file.
				*/
				AUD_LOCAL void close();

				public:
				/**
				* Creates a new writer.
				* \param filename The path to the file to be read.
				* \param specs The file's audio specification.
				* \param format The file's container format.
				* \param codec The codec used for encoding the audio data.
				* \param bitrate The bitrate for encoding.
				* \exception Exception Thrown if the file specified does not exist or
				* cannot be read with ffmpeg.
				*/
				FFMPEGWriter(std::string filename, DeviceSpecs specs, Container format, Codec codec, unsigned int bitrate);

				/**
				* Destroys the writer and closes the file.
				*/
				virtual ~FFMPEGWriter();

				virtual int getPosition() const;
				virtual DeviceSpecs getSpecs() const;
				virtual void write(unsigned int length, sample_t* buffer);
				};

				AUD_NAMESPACE_END