2 Copyright (c) 20013-2013, John Hurst
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
8 1. Redistributions of source code must retain the above copyright
9 notice, this list of conditions and the following disclaimer.
10 2. Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
13 3. The name of the author may not be used to endorse or promote products
14 derived from this software without specific prior written permission.
16 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 /*! \file PCMDataProviders.cpp
29 \brief Implementation of PCM sample data providers for WAV, AtmosSync and Silence.
32 #include <PCMDataProviders.h>
36 using namespace ASDCP;
39 ASDCP::PCMDataProviderInterface::~PCMDataProviderInterface() {}
42 ASDCP::WAVDataProvider::WAVDataProvider()
43 : m_Parser(), m_FB(), m_ADesc(), m_SampleSize(0), m_ptr(NULL)
46 ASDCP::WAVDataProvider::~WAVDataProvider()
50 ASDCP::WAVDataProvider::PutSample(const ui32_t numChannels, byte_t* buf, ui32_t* bytesWritten)
53 ASDCP_TEST_NULL(m_ptr);
54 if ( numChannels > m_ADesc.ChannelCount)
56 DefaultLogSink().Error("Requested %u channels from a wav file with %u channel.", numChannels,
57 m_ADesc.ChannelCount);
60 *bytesWritten = m_SampleSize * numChannels;
61 ::memcpy(buf, m_ptr, *bytesWritten);
62 m_ptr += *bytesWritten;
67 ASDCP::WAVDataProvider::ReadFrame()
69 Result_t result = m_Parser.ReadFrame(m_FB);
70 m_ptr = ASDCP_SUCCESS(result) ? m_FB.RoData() : NULL;
75 ASDCP::WAVDataProvider::FillAudioDescriptor(PCM::AudioDescriptor& ADesc) const
82 ASDCP::WAVDataProvider::Reset()
84 return m_Parser.Reset();
88 ASDCP::WAVDataProvider::OpenRead(const char* filename, const Rational& PictureRate)
90 ASDCP_TEST_NULL_STR(filename);
92 Result_t result = m_Parser.OpenRead(filename, PictureRate);
94 if ( ASDCP_SUCCESS(result) )
95 result = m_Parser.FillAudioDescriptor(m_ADesc);
97 if ( ASDCP_SUCCESS(result) )
99 m_ADesc.EditRate = PictureRate;
100 m_SampleSize = ((m_ADesc.QuantizationBits + 7) / 8);
101 result = m_FB.Capacity(PCM::CalcFrameBufferSize(m_ADesc));
108 ASDCP::AtmosSyncDataProvider::AtmosSyncDataProvider(const ui16_t bitsPerSample, const ui32_t sampleRate,
109 const ASDCP::Rational& editRate, const byte_t* uuid)
110 : m_Generator(bitsPerSample, sampleRate, editRate, uuid), m_FB(), m_ADesc(), m_SampleSize()
112 m_Generator.FillAudioDescriptor(m_ADesc);
113 m_SampleSize = PCM::CalcSampleSize(m_ADesc);
114 m_FB.Capacity(PCM::CalcFrameBufferSize(m_ADesc));
117 ASDCP::AtmosSyncDataProvider::~AtmosSyncDataProvider()
121 ASDCP::AtmosSyncDataProvider::PutSample(const ui32_t numChannels, byte_t* buf, ui32_t* bytesWritten)
123 ASDCP_TEST_NULL(buf);
124 ASDCP_TEST_NULL(m_ptr);
125 if ( numChannels > m_ADesc.ChannelCount)
127 DefaultLogSink().Error("Requested %u channels from a wav file with %u channel.", numChannels,
128 m_ADesc.ChannelCount);
132 (*bytesWritten) = m_SampleSize;
133 ::memcpy(buf, m_ptr, m_SampleSize);
134 m_ptr += m_SampleSize;
139 ASDCP::AtmosSyncDataProvider::ReadFrame()
141 Result_t result = m_Generator.ReadFrame(m_FB);
142 m_ptr = ASDCP_SUCCESS(result) ? m_FB.RoData() : NULL;
147 ASDCP::AtmosSyncDataProvider::FillAudioDescriptor(PCM::AudioDescriptor& ADesc) const
154 ASDCP::AtmosSyncDataProvider::Reset()
156 return m_Generator.Reset();
160 ASDCP::SilenceDataProvider::SilenceDataProvider(const ui16_t numChannels, const ui16_t bitsPerSample,
161 const ui32_t sampleRate, const ASDCP::Rational& editRate)
162 : m_ADesc(), m_SampleSize(0)
164 m_SampleSize = ((bitsPerSample + 7) / 8);
165 m_ADesc.EditRate = editRate;
166 m_ADesc.AudioSamplingRate = Rational(sampleRate, 1);
167 m_ADesc.ChannelCount = numChannels;
168 m_ADesc.QuantizationBits = bitsPerSample;
169 m_ADesc.BlockAlign = numChannels * m_SampleSize;
170 m_ADesc.AvgBps = sampleRate * m_ADesc.BlockAlign;
173 ASDCP::SilenceDataProvider::~SilenceDataProvider()
177 ASDCP::SilenceDataProvider::PutSample(const ui32_t numChannels, byte_t* buf, ui32_t* bytesWritten)
179 ASDCP_TEST_NULL(buf);
180 if ( numChannels > m_ADesc.ChannelCount)
182 DefaultLogSink().Error("Requested %u channels from a wav file with %u channel.", numChannels,
183 m_ADesc.ChannelCount);
186 (*bytesWritten) = m_SampleSize * numChannels;
187 ::memset(buf, 0, (*bytesWritten));
192 ASDCP::SilenceDataProvider::ReadFrame()
199 ASDCP::SilenceDataProvider::FillAudioDescriptor(PCM::AudioDescriptor& ADesc) const
206 ASDCP::SilenceDataProvider::Reset()