475 lines
10 KiB
C++
475 lines
10 KiB
C++
#include "..\etools.h"
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#include "..\emanagers.h"
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using namespace e2d;
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#ifndef SAFE_DELETE
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#define SAFE_DELETE(p) { if (p) { delete (p); (p)=nullptr; } }
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#endif
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#ifndef SAFE_DELETE_ARRAY
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#define SAFE_DELETE_ARRAY(p) { if (p) { delete[] (p); (p)=nullptr; } }
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#endif
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inline bool TraceError(wchar_t* sPrompt)
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{
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WARN_IF(true, "Music error: %s failed!", sPrompt);
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return false;
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}
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inline bool TraceError(wchar_t* sPrompt, HRESULT hr)
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{
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WARN_IF(true, "Music error: %s (%#X)", sPrompt, hr);
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return false;
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}
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Music::Music()
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: m_bOpened(false)
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, m_bPlaying(false)
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, m_pwfx(nullptr)
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, m_hmmio(nullptr)
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, m_pResourceBuffer(nullptr)
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, m_pbWaveData(nullptr)
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, m_dwSize(0)
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, m_pSourceVoice(nullptr)
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{
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}
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Music::~Music()
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{
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_close();
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}
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bool Music::_open(const String & strFileName)
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{
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if (m_bOpened)
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{
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WARN_IF(true, L"Music can be opened only once!");
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return false;
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}
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if (strFileName.isEmpty())
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{
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WARN_IF(true, L"Music::_open Invalid file name.");
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return false;
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}
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IXAudio2 * pXAudio2 = MusicManager::getIXAudio2();
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if (!pXAudio2)
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{
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WARN_IF(true, L"IXAudio2 nullptr pointer error!");
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return false;
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}
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// 定位 wave 文件
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wchar_t strFilePath[MAX_PATH];
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if (!_findMediaFileCch(strFilePath, MAX_PATH, strFileName))
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{
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WARN_IF(true, L"Failed to find media file: %s", (const wchar_t*)strFileName);
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return false;
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}
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m_hmmio = mmioOpen(strFilePath, nullptr, MMIO_ALLOCBUF | MMIO_READ);
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if (nullptr == m_hmmio)
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{
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return TraceError(L"mmioOpen");
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}
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if (!_readMMIO())
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{
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// 读取非 wave 文件时 ReadMMIO 调用失败
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mmioClose(m_hmmio, 0);
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return TraceError(L"_readMMIO");
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}
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if (!_resetFile())
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return TraceError(L"_resetFile");
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// 重置文件后，wave 文件的大小是 m_ck.cksize
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m_dwSize = m_ck.cksize;
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// 将样本数据读取到内存中
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m_pbWaveData = new BYTE[m_dwSize];
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if (!_read(m_pbWaveData, m_dwSize))
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{
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TraceError(L"Failed to read WAV data");
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SAFE_DELETE_ARRAY(m_pbWaveData);
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return false;
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}
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// 创建音源
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HRESULT hr;
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if (FAILED(hr = pXAudio2->CreateSourceVoice(&m_pSourceVoice, m_pwfx)))
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{
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TraceError(L"Error %#X creating source voice", hr);
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SAFE_DELETE_ARRAY(m_pbWaveData);
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return false;
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}
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m_bOpened = true;
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m_bPlaying = false;
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return true;
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}
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bool Music::play(int nLoopCount)
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{
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HRESULT hr;
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if (m_bPlaying)
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{
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stop();
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}
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nLoopCount = min(nLoopCount, XAUDIO2_LOOP_INFINITE - 1);
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nLoopCount = (nLoopCount < 0) ? XAUDIO2_LOOP_INFINITE : nLoopCount;
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// 提交 wave 样本数据
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XAUDIO2_BUFFER buffer = { 0 };
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buffer.pAudioData = m_pbWaveData;
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buffer.Flags = XAUDIO2_END_OF_STREAM;
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buffer.AudioBytes = m_dwSize;
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buffer.LoopCount = nLoopCount;
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if (FAILED(hr = m_pSourceVoice->SubmitSourceBuffer(&buffer)))
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{
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TraceError(L"Error %#X submitting source buffer", hr);
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m_pSourceVoice->DestroyVoice();
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SAFE_DELETE_ARRAY(m_pbWaveData);
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return false;
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}
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if (SUCCEEDED(hr = m_pSourceVoice->Start(0)))
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{
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m_bPlaying = true;
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}
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return SUCCEEDED(hr);
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}
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bool Music::pause()
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{
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if (m_pSourceVoice)
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{
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if (SUCCEEDED(m_pSourceVoice->Stop()))
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{
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m_bPlaying = false;
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return true;
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}
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}
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return false;
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}
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bool Music::resume()
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{
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if (m_pSourceVoice)
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{
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if (SUCCEEDED(m_pSourceVoice->Start()))
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{
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m_bPlaying = true;
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return true;
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}
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}
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return false;
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}
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bool Music::stop()
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{
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if (m_pSourceVoice)
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{
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if (SUCCEEDED(m_pSourceVoice->Stop()))
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{
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m_pSourceVoice->ExitLoop();
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m_pSourceVoice->FlushSourceBuffers();
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m_bPlaying = false;
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return true;
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}
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}
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return false;
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}
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bool Music::isPlaying()
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{
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if (m_pSourceVoice)
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{
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XAUDIO2_VOICE_STATE state;
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m_pSourceVoice->GetState(&state);
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if (state.BuffersQueued == 0)
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{
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m_bPlaying = false;
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}
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return m_bPlaying;
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}
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else
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{
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return false;
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}
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}
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double Music::getVolume() const
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{
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float fVolume = 0.0f;
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if (m_pSourceVoice)
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{
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m_pSourceVoice->GetVolume(&fVolume);
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}
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return static_cast<double>(fVolume);
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}
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bool Music::setVolume(double fVolume)
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{
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if (m_pSourceVoice)
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{
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return SUCCEEDED(m_pSourceVoice->SetVolume(min(max(static_cast<float>(fVolume), -224), 224)));
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}
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return false;
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}
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double Music::getFrequencyRatio() const
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{
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float fFrequencyRatio = 0.0f;
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if (m_pSourceVoice)
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{
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m_pSourceVoice->GetFrequencyRatio(&fFrequencyRatio);
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}
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return static_cast<double>(fFrequencyRatio);
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}
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bool Music::setFrequencyRatio(double fFrequencyRatio)
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{
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if (m_pSourceVoice)
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{
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fFrequencyRatio = min(max(fFrequencyRatio, XAUDIO2_MIN_FREQ_RATIO), XAUDIO2_MAX_FREQ_RATIO);
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return SUCCEEDED(m_pSourceVoice->SetFrequencyRatio(static_cast<float>(fFrequencyRatio)));
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}
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return false;
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}
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IXAudio2SourceVoice * Music::getIXAudio2SourceVoice() const
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{
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return m_pSourceVoice;
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}
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void Music::_close()
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{
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if (m_pSourceVoice)
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{
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m_pSourceVoice->Stop();
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m_pSourceVoice->FlushSourceBuffers();
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m_pSourceVoice->DestroyVoice();
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m_pSourceVoice = nullptr;
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}
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if (m_hmmio != nullptr)
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{
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mmioClose(m_hmmio, 0);
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m_hmmio = nullptr;
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}
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SAFE_DELETE_ARRAY(m_pResourceBuffer);
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SAFE_DELETE_ARRAY(m_pbWaveData);
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SAFE_DELETE_ARRAY(m_pwfx);
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m_bOpened = false;
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m_bPlaying = false;
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}
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bool Music::_readMMIO()
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{
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MMCKINFO ckIn;
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PCMWAVEFORMAT pcmWaveFormat;
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memset(&ckIn, 0, sizeof(ckIn));
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m_pwfx = nullptr;
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if ((0 != mmioDescend(m_hmmio, &m_ckRiff, nullptr, 0)))
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return TraceError(L"mmioDescend");
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// 确认文件是一个合法的 wave 文件
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if ((m_ckRiff.ckid != FOURCC_RIFF) ||
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(m_ckRiff.fccType != mmioFOURCC('W', 'A', 'V', 'E')))
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return TraceError(L"mmioFOURCC");
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// 在输入文件中查找 'fmt' 块
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ckIn.ckid = mmioFOURCC('f', 'm', 't', ' ');
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if (0 != mmioDescend(m_hmmio, &ckIn, &m_ckRiff, MMIO_FINDCHUNK))
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return TraceError(L"mmioDescend");
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// 'fmt' 块至少应和 PCMWAVEFORMAT 一样大
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if (ckIn.cksize < (LONG)sizeof(PCMWAVEFORMAT))
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return TraceError(L"sizeof(PCMWAVEFORMAT)");
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// 将 'fmt' 块读取到 pcmWaveFormat 中
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if (mmioRead(m_hmmio, (HPSTR)&pcmWaveFormat,
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sizeof(pcmWaveFormat)) != sizeof(pcmWaveFormat))
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return TraceError(L"mmioRead");
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// 分配 WAVEFORMATEX，但如果它不是 PCM 格式，再读取一个 WORD 大小
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// 的数据，这个数据就是额外分配的大小
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if (pcmWaveFormat.wf.wFormatTag == WAVE_FORMAT_PCM)
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{
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m_pwfx = (WAVEFORMATEX*)new CHAR[sizeof(WAVEFORMATEX)];
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// 拷贝数据
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memcpy(m_pwfx, &pcmWaveFormat, sizeof(pcmWaveFormat));
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m_pwfx->cbSize = 0;
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}
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else
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{
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// 读取额外数据的大小
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WORD cbExtraBytes = 0L;
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if (mmioRead(m_hmmio, (CHAR*)&cbExtraBytes, sizeof(WORD)) != sizeof(WORD))
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return TraceError(L"mmioRead");
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m_pwfx = (WAVEFORMATEX*)new CHAR[sizeof(WAVEFORMATEX) + cbExtraBytes];
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// 拷贝数据
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memcpy(m_pwfx, &pcmWaveFormat, sizeof(pcmWaveFormat));
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m_pwfx->cbSize = cbExtraBytes;
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// 读取额外数据
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if (mmioRead(m_hmmio, (CHAR*)(((BYTE*)&(m_pwfx->cbSize)) + sizeof(WORD)),
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cbExtraBytes) != cbExtraBytes)
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{
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SAFE_DELETE(m_pwfx);
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return TraceError(L"mmioRead");
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}
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}
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if (0 != mmioAscend(m_hmmio, &ckIn, 0))
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{
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SAFE_DELETE(m_pwfx);
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return TraceError(L"mmioAscend");
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}
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return true;
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}
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bool Music::_resetFile()
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{
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// Seek to the data
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if (-1 == mmioSeek(m_hmmio, m_ckRiff.dwDataOffset + sizeof(FOURCC),
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SEEK_SET))
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return TraceError(L"mmioSeek");
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// Search the input file for the 'data' chunk.
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m_ck.ckid = mmioFOURCC('d', 'a', 't', 'a');
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if (0 != mmioDescend(m_hmmio, &m_ck, &m_ckRiff, MMIO_FINDCHUNK))
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return TraceError(L"mmioDescend");
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return true;
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}
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bool Music::_read(BYTE* pBuffer, DWORD dwSizeToRead)
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{
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MMIOINFO mmioinfoIn; // current status of m_hmmio
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if (0 != mmioGetInfo(m_hmmio, &mmioinfoIn, 0))
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return TraceError(L"mmioGetInfo");
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UINT cbDataIn = dwSizeToRead;
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if (cbDataIn > m_ck.cksize)
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cbDataIn = m_ck.cksize;
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m_ck.cksize -= cbDataIn;
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for (DWORD cT = 0; cT < cbDataIn; cT++)
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{
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// Copy the bytes from the io to the buffer.
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if (mmioinfoIn.pchNext == mmioinfoIn.pchEndRead)
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{
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if (0 != mmioAdvance(m_hmmio, &mmioinfoIn, MMIO_READ))
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return TraceError(L"mmioAdvance");
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if (mmioinfoIn.pchNext == mmioinfoIn.pchEndRead)
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return TraceError(L"mmioinfoIn.pchNext");
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}
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// Actual copy.
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*((BYTE*)pBuffer + cT) = *((BYTE*)mmioinfoIn.pchNext);
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mmioinfoIn.pchNext++;
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}
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if (0 != mmioSetInfo(m_hmmio, &mmioinfoIn, 0))
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return TraceError(L"mmioSetInfo");
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return true;
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}
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bool Music::_findMediaFileCch(wchar_t* strDestPath, int cchDest, const String & strFilename)
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{
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bool bFound = false;
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if (strFilename.isEmpty() || nullptr == strDestPath || cchDest < 10)
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return false;
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// Get the exe name, and exe path
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wchar_t strExePath[MAX_PATH] = { 0 };
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wchar_t strExeName[MAX_PATH] = { 0 };
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wchar_t* strLastSlash = nullptr;
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GetModuleFileName(HINST_THISCOMPONENT, strExePath, MAX_PATH);
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strExePath[MAX_PATH - 1] = 0;
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strLastSlash = wcsrchr(strExePath, TEXT('\\'));
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if (strLastSlash)
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{
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wcscpy_s(strExeName, MAX_PATH, &strLastSlash[1]);
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// Chop the exe name from the exe path
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*strLastSlash = 0;
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// Chop the .exe from the exe name
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strLastSlash = wcsrchr(strExeName, TEXT('.'));
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if (strLastSlash)
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*strLastSlash = 0;
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}
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wcscpy_s(strDestPath, cchDest, strFilename);
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if (GetFileAttributes(strDestPath) != 0xFFFFFFFF)
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return true;
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// Search all parent directories starting at .\ and using strFilename as the leaf name
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wchar_t strLeafName[MAX_PATH] = { 0 };
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wcscpy_s(strLeafName, MAX_PATH, strFilename);
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wchar_t strFullPath[MAX_PATH] = { 0 };
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wchar_t strFullFileName[MAX_PATH] = { 0 };
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wchar_t strSearch[MAX_PATH] = { 0 };
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wchar_t* strFilePart = nullptr;
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GetFullPathName(L".", MAX_PATH, strFullPath, &strFilePart);
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if (strFilePart == nullptr)
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return false;
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while (strFilePart != nullptr && *strFilePart != '\0')
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{
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swprintf_s(strFullFileName, MAX_PATH, L"%s\\%s", strFullPath, strLeafName);
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if (GetFileAttributes(strFullFileName) != 0xFFFFFFFF)
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{
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wcscpy_s(strDestPath, cchDest, strFullFileName);
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bFound = true;
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break;
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}
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swprintf_s(strFullFileName, MAX_PATH, L"%s\\%s\\%s", strFullPath, strExeName, strLeafName);
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if (GetFileAttributes(strFullFileName) != 0xFFFFFFFF)
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{
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wcscpy_s(strDestPath, cchDest, strFullFileName);
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bFound = true;
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break;
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}
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swprintf_s(strSearch, MAX_PATH, L"%s\\..", strFullPath);
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GetFullPathName(strSearch, MAX_PATH, strFullPath, &strFilePart);
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}
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if (bFound)
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return true;
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// 失败时，将文件作为路径返回，同时也返回错误代码
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wcscpy_s(strDestPath, cchDest, strFilename);
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return false;
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}
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