2 Copyright (c) 2004-2009, John Hurst
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27 /*! \file PCMParserList.cpp
29 \brief Read WAV file(s), multiplex multiple PCM frame buffers into one
32 #include <PCMParserList.h>
36 using namespace ASDCP;
40 ASDCP::ParserInstance::ParserInstance() : m_p(0), m_SampleSize(0)
44 ASDCP::ParserInstance::~ParserInstance()
48 // PCM::CalcSampleSize(ADesc);
50 ASDCP::ParserInstance::OpenRead(const char* filename, Rational& PictureRate)
52 ASDCP_TEST_NULL_STR(filename);
54 Result_t result = Parser.OpenRead(filename, PictureRate);
56 if ( ASDCP_SUCCESS(result) )
57 result = Parser.FillAudioDescriptor(ADesc);
59 if ( ASDCP_SUCCESS(result) )
61 ADesc.SampleRate = PictureRate;
62 m_SampleSize = PCM::CalcSampleSize(ADesc);
63 result = FB.Capacity(PCM::CalcFrameBufferSize(ADesc));
70 // deposit the next available sample into the given framebuffer
72 ASDCP::ParserInstance::PutSample(byte_t* p)
76 memcpy(p, m_p, m_SampleSize);
84 ASDCP::ParserInstance::ReadFrame()
86 Result_t result = Parser.ReadFrame(FB);
87 m_p = ASDCP_SUCCESS(result) ? FB.RoData() : 0;
92 //------------------------------------------------------------------------------------------
97 ASDCP::PCMParserList::PCMParserList() : m_ChannelCount(0)
101 ASDCP::PCMParserList::~PCMParserList()
113 ASDCP::PCMParserList::OpenRead(ui32_t argc, const char** argv, Rational& PictureRate)
115 ASDCP_TEST_NULL_STR(argv);
116 Result_t result = RESULT_OK;
118 for ( ui32_t i = 0; i < argc && ASDCP_SUCCESS(result); i++ )
120 ParserInstance* I = new ParserInstance;
121 result = I->OpenRead(argv[i], PictureRate);
123 if ( ASDCP_SUCCESS(result) )
131 if ( I->ADesc.AudioSamplingRate != m_ADesc.AudioSamplingRate )
133 DefaultLogSink().Error("AudioSamplingRate mismatch in PCM parser list.");
134 return RESULT_FORMAT;
137 if ( I->ADesc.QuantizationBits != m_ADesc.QuantizationBits )
139 DefaultLogSink().Error("QuantizationBits mismatch in PCM parser list.");
140 return RESULT_FORMAT;
143 if ( I->ADesc.ContainerDuration < m_ADesc.ContainerDuration )
144 m_ADesc.ContainerDuration = I->ADesc.ContainerDuration;
146 m_ADesc.BlockAlign += I->ADesc.BlockAlign;
149 m_ChannelCount += I->ADesc.ChannelCount;
152 if ( ASDCP_SUCCESS(result) )
153 result = I->FB.Capacity(PCM::CalcFrameBufferSize(m_ADesc));
155 if ( ASDCP_SUCCESS(result) )
159 m_ADesc.ChannelCount = m_ChannelCount;
160 m_ADesc.AvgBps = m_ADesc.AvgBps * m_ChannelCount;
162 if ( ASDCP_FAILURE(result) )
170 ASDCP::PCMParserList::FillAudioDescriptor(PCM::AudioDescriptor& ADesc) const
178 ASDCP::PCMParserList::Reset()
180 Result_t result = RESULT_OK;
181 PCMParserList::iterator self_i;
183 for ( self_i = begin(); self_i != end() && ASDCP_SUCCESS(result) ; self_i++ )
184 result = (*self_i)->Parser.Reset();
192 ASDCP::PCMParserList::ReadFrame(PCM::FrameBuffer& OutFB)
194 Result_t result = RESULT_OK;
197 return front()->Parser.ReadFrame(OutFB);
199 PCMParserList::iterator self_i;
200 assert(PCM::CalcFrameBufferSize(m_ADesc) <= OutFB.Capacity());
202 for ( self_i = begin(); self_i != end() && ASDCP_SUCCESS(result) ; self_i++ )
203 result = (*self_i)->ReadFrame();
205 if ( ASDCP_SUCCESS(result) )
207 OutFB.Size(PCM::CalcFrameBufferSize(m_ADesc));
209 // ui32_t sample_size = (PCM::CalcSampleSize(m_ADesc));
210 byte_t* Out_p = OutFB.Data();
211 byte_t* End_p = Out_p + OutFB.Size();
213 while ( Out_p < End_p && ASDCP_SUCCESS(result) )
217 while ( self_i != end() && ASDCP_SUCCESS(result) )
219 result = (*self_i)->PutSample(Out_p);
220 Out_p += (*self_i)->SampleSize();
225 assert(Out_p == End_p);
232 // end PCMParserList.cpp