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>
35 using namespace ASDCP;
38 ASDCP::ParserInstance::ParserInstance() : m_p(0), m_SampleSize(0)
42 ASDCP::ParserInstance::~ParserInstance()
46 // PCM::CalcSampleSize(ADesc);
48 ASDCP::ParserInstance::OpenRead(const char* filename, Rational& PictureRate)
50 ASDCP_TEST_NULL_STR(filename);
52 Result_t result = Parser.OpenRead(filename, PictureRate);
54 if ( ASDCP_SUCCESS(result) )
55 result = Parser.FillAudioDescriptor(ADesc);
57 if ( ASDCP_SUCCESS(result) )
59 ADesc.SampleRate = PictureRate;
60 m_SampleSize = PCM::CalcSampleSize(ADesc);
61 result = FB.Capacity(PCM::CalcFrameBufferSize(ADesc));
68 // deposit the next available sample into the given framebuffer
70 ASDCP::ParserInstance::PutSample(byte_t* p)
74 memcpy(p, m_p, m_SampleSize);
82 ASDCP::ParserInstance::ReadFrame()
84 Result_t result = Parser.ReadFrame(FB);
85 m_p = ASDCP_SUCCESS(result) ? FB.RoData() : 0;
90 //------------------------------------------------------------------------------------------
95 ASDCP::PCMParserList::PCMParserList() : m_ChannelCount(0)
99 ASDCP::PCMParserList::~PCMParserList()
111 ASDCP::PCMParserList::OpenRead(ui32_t argc, const char** argv, Rational& PictureRate)
113 ASDCP_TEST_NULL_STR(argv);
114 Result_t result = RESULT_OK;
116 for ( ui32_t i = 0; i < argc && ASDCP_SUCCESS(result); i++ )
118 ParserInstance* I = new ParserInstance;
119 result = I->OpenRead(argv[i], PictureRate);
121 if ( ASDCP_SUCCESS(result) )
127 m_ADesc.BlockAlign += I->ADesc.BlockAlign;
129 m_ChannelCount += I->ADesc.ChannelCount;
132 if ( ASDCP_SUCCESS(result) )
133 result = I->FB.Capacity(PCM::CalcFrameBufferSize(m_ADesc));
135 if ( ASDCP_SUCCESS(result) )
139 m_ADesc.ChannelCount = m_ChannelCount;
140 m_ADesc.AvgBps = m_ADesc.AvgBps * m_ChannelCount;
142 if ( ASDCP_FAILURE(result) )
150 ASDCP::PCMParserList::FillAudioDescriptor(PCM::AudioDescriptor& ADesc) const
158 ASDCP::PCMParserList::Reset()
160 Result_t result = RESULT_OK;
161 PCMParserList::iterator self_i;
163 for ( self_i = begin(); self_i != end() && ASDCP_SUCCESS(result) ; self_i++ )
164 result = (*self_i)->Parser.Reset();
172 ASDCP::PCMParserList::ReadFrame(PCM::FrameBuffer& OutFB)
174 Result_t result = RESULT_OK;
177 return front()->Parser.ReadFrame(OutFB);
179 PCMParserList::iterator self_i;
180 assert(PCM::CalcFrameBufferSize(m_ADesc) <= OutFB.Capacity());
182 for ( self_i = begin(); self_i != end() && ASDCP_SUCCESS(result) ; self_i++ )
183 result = (*self_i)->ReadFrame();
185 if ( ASDCP_SUCCESS(result) )
187 OutFB.Size(PCM::CalcFrameBufferSize(m_ADesc));
189 // ui32_t sample_size = (PCM::CalcSampleSize(m_ADesc));
190 byte_t* Out_p = OutFB.Data();
191 byte_t* End_p = Out_p + OutFB.Size();
193 while ( Out_p < End_p && ASDCP_SUCCESS(result) )
197 while ( self_i != end() && ASDCP_SUCCESS(result) )
199 result = (*self_i)->PutSample(Out_p);
200 Out_p += (*self_i)->SampleSize();
205 assert(Out_p == End_p);
212 // end PCMParserList.cpp