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#include <stdio.h>
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#include <SDL.h>
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#include <FAudio.h>
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#include <iostream>
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#include <iomanip>
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#include <sstream>
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#include <array>
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std::array<uint8_t, 2> fill_char_buffer(const uint16_t x)
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{
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std::array<uint8_t, 2> buf;
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buf[0] = static_cast<uint8_t> (x >> 8);
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buf[1] = static_cast<uint8_t> (x >> 0);
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return buf;
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}
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std::array<uint8_t, 4> fill_char_buffer(const uint32_t x)
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{
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std::array<uint8_t, 4> buf;
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buf[0] = static_cast<uint8_t> (x >> 24);
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buf[1] = static_cast<uint8_t> (x >> 16);
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buf[2] = static_cast<uint8_t> (x >> 8);
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buf[3] = static_cast<uint8_t> (x >> 0);
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return buf;
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}
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char printable_char (char c)
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{
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return (std::isprint(c) ? c : ' ');
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}
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std::string uint8_to_charstr(const uint8_t x)
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{
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std::stringstream ss;
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ss << "|"
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<< printable_char(static_cast<char>(x))
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<< " |"
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<< std::hex << std::setfill('0') << std::setw(2)
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<< static_cast<unsigned int>(x) << " |"
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<< std::setfill(' ') << std::setw(8)
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<< "0x"
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<< std::setfill('0') << std::setw(2)
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<< static_cast<unsigned int>(x)
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<< "|"
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<< std::setfill(' ') << std::setw(10)
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<< std::dec << static_cast<unsigned int>(x)
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<< "|";
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return ss.str();
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}
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std::string uint16_to_charstr(const uint16_t x)
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{
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std::array<uint8_t, 2> buf = fill_char_buffer(x);
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std::stringstream ss;
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ss << "|"
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<< printable_char(static_cast<char>(buf[1]))
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<< printable_char(static_cast<char>(buf[0]))
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<< " |"
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<< std::hex << std::setfill('0') << std::setw(2)
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<< static_cast<unsigned>(buf[1]) << "."
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<< std::hex << std::setfill('0') << std::setw(2)
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<< static_cast<unsigned>(buf[0]) << " |"
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<< std::setfill(' ') << std::setw(6)
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<< "0x"
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<< std::setfill('0') << std::setw(4)
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<< x
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<< "|"
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<< std::setfill(' ') << std::setw(10)
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<< std::dec << x
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<< "|";
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return ss.str();
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}
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std::string uint32_to_charstr(const uint32_t x)
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{
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std::array<uint8_t, 4> buf = fill_char_buffer(x);
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std::stringstream ss;
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ss << "|"
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<< printable_char(static_cast<char>(buf[3]))
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<< printable_char(static_cast<char>(buf[2]))
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<< printable_char(static_cast<char>(buf[1]))
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<< printable_char(static_cast<char>(buf[0]))
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<< "|"
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<< std::hex << std::setfill('0') << std::setw(2)
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<< static_cast<unsigned>(buf[3]) << "."
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<< std::hex << std::setfill('0') << std::setw(2)
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<< static_cast<unsigned>(buf[2]) << "."
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<< std::hex << std::setfill('0') << std::setw(2)
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<< static_cast<unsigned>(buf[1]) << "."
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<< std::hex << std::setfill('0') << std::setw(2)
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<< static_cast<unsigned>(buf[0]) << "|"
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<< std::setfill('0') << std::setw(2)
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<< "0x"
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<< std::setfill('0') << std::setw(8)
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<< x
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<< "|"
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<< std::setfill(' ') << std::setw(10)
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<< std::dec << x
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<< "|";
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return ss.str();
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}
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/* based on https://docs.microsoft.com/en-us/windows/desktop/xaudio2/how-to--load-audio-data-files-in-xaudio2 */
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#define fourccRIFF *((uint32_t *) "RIFF")
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#define fourccDATA *((uint32_t *) "data")
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#define fourccFMT *((uint32_t *) "fmt ")
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#define fourccWAVE *((uint32_t *) "WAVE")
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#define fourccXWMA *((uint32_t *) "XWMA")
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#define fourccDPDS *((uint32_t *) "dpds")
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uint32_t load_data(const char *filename)
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{
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/* open the audio file */
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FILE *hFile = fopen(filename, "rb");
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if (!hFile)
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return 1;
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fseek(hFile, 0, SEEK_SET);
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uint32_t chunkID;
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uint32_t dwChunkPosition = 0;
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// search for 'RIFF' chunk
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bool foundRIFF = false;
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while (fread(&chunkID, sizeof(uint32_t), 1, hFile) > 0)
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{
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dwChunkPosition += sizeof (uint32_t);
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if (chunkID == fourccRIFF)
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{
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foundRIFF = true;
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std::cout << "found 'RIFF' at: " << dwChunkPosition - sizeof(uint32_t) << std::endl;
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break;
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}
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}
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if (!foundRIFF)
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{
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std::cout << "missing RIFF header" << std::endl;
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return 1;
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}
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{
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std::cout << "RIFF: "
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<< uint32_to_charstr(chunkID) << std::endl;
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uint32_t filesize;
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uint32_t format;
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if (fread(&filesize, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read RIFF filesize");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "ChunkSize: "
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<< uint32_to_charstr(filesize) << std::endl;
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if (fread(&format, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read RIFF format");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "Format: "
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<< uint32_to_charstr(format) << std::endl;
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}
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uint32_t fmt_chunk_start = dwChunkPosition;
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uint32_t fmt_chunk_size = 0;
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{ /* fmt sub-chunk 24 */
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if (fread(&chunkID, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt chunkID");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "fmt: "
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<< uint32_to_charstr(chunkID) << std::endl;
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if (chunkID != fourccFMT)
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{
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std::cout << "expected chunkID 'fmt '" << std::endl;
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return 1;
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}
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if (fread(&fmt_chunk_size, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt chunkSize");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "ChunkSize: "
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<< uint32_to_charstr(fmt_chunk_size) << std::endl;
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uint16_t audio_format;
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if (fread(&audio_format, sizeof(uint16_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt AudioFormat");
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dwChunkPosition += sizeof (uint16_t);
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auto audio_format_str = [](const uint16_t format)
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{
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if (format == FAUDIO_FORMAT_PCM) // 1
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return "FAUDIO_FORMAT_PCM";
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if (format == FAUDIO_FORMAT_MSADPCM) // 2
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return "FAUDIO_FORMAT_MSADPCM";
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if (format == FAUDIO_FORMAT_IEEE_FLOAT) // 3
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return "FAUDIO_FORMAT_IEEE_FLOAT";
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if (format == FAUDIO_FORMAT_WMAUDIO2) // 0x0161
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return "FAUDIO_FORMAT_WMAUDIO2";
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if (format == FAUDIO_FORMAT_WMAUDIO3) // 0x0162
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return "FAUDIO_FORMAT_WMAUDIO3";
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if (format == FAUDIO_FORMAT_WMAUDIO_LOSSLESS) // 0x0163
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return "FAUDIO_FORMAT_WMAUDIO_LOSSLESS";
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if (format == FAUDIO_FORMAT_XMAUDIO2) // 0x0166
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return "FAUDIO_FORMAT_XMAUDIO2";
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if (format == FAUDIO_FORMAT_EXTENSIBLE) // 0xFFE
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return "FAUDIO_FORMAT_";
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return "FAUDIO_FORMAT_UNKNOWN";
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};
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std::cout << "fmt AudioFormat: "
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<< uint16_to_charstr(audio_format)
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<< " " << audio_format_str(audio_format) << std::endl;
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uint16_t NumChannels;
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if (fread(&NumChannels, sizeof(uint16_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt NumChannels");
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dwChunkPosition += sizeof (uint16_t);
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std::cout << "fmt NumChannels: "
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<< uint16_to_charstr(NumChannels) << std::endl;
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uint32_t SampleRate;
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if (fread(&SampleRate, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt SampleRate");
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std::cout << "fmt SampleRate: "
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<< uint32_to_charstr(SampleRate) << std::endl;
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uint32_t ByteRate;
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if (fread(&ByteRate, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt ByteRate");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "fmt ByteRate: "
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<< uint32_to_charstr(ByteRate) << std::endl;
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uint16_t BloackAlign;
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if (fread(&BloackAlign, sizeof(uint16_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt BloackAlign");
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dwChunkPosition += sizeof (uint16_t);
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std::cout << "fmt BloackAlign: "
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<< uint16_to_charstr(BloackAlign) << std::endl;
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uint16_t BitsPerSample;
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if (fread(&BitsPerSample, sizeof(uint16_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt BitsPerSample");
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dwChunkPosition += sizeof (uint16_t);
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std::cout << "fmt BitsPerSample:"
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<< uint16_to_charstr(BitsPerSample) << std::endl;
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}
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/* in case of extensible audio format write the additional data to the file */
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if (fmt_chunk_size > 16)
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{
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std::cout << "fmt chunk position: " << dwChunkPosition - fmt_chunk_start << std::endl;
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uint16_t cb_size;
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if (fread(&cb_size, sizeof(uint16_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt cbSize");
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dwChunkPosition += sizeof (uint16_t);
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std::cout << "fmt cbSize: "
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<< uint32_to_charstr(cb_size) << std::endl;
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if (cb_size >= 22)
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{
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uint16_t ValidBitsPerSample;
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if (fread(&ValidBitsPerSample, sizeof(uint16_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt ex ValidBitsPerSample");
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dwChunkPosition += sizeof (uint16_t);
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std::cout << "fmt ValidBitsPerS:"
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<< uint16_to_charstr(ValidBitsPerSample) << std::endl;
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uint32_t dwChannelMask;
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if (fread(&dwChannelMask, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt ex dwChannelMask");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "fmt dwChannelMask:"
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<< uint32_to_charstr(dwChannelMask) << std::endl;
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uint32_t Data1;
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if (fread(&Data1, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt ex Data1");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "fmt Data1: "
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<< uint32_to_charstr(Data1) << std::endl;
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uint16_t Data2;
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if (fread(&Data2, sizeof(uint16_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt ex Data2");
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dwChunkPosition += sizeof (uint16_t);
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std::cout << "fmt Data2: "
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<< uint16_to_charstr(Data2) << std::endl;
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uint16_t Data3;
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if (fread(&Data3, sizeof(uint16_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt ex Data3");
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dwChunkPosition += sizeof (uint16_t);
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std::cout << "fmt Data3: "
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<< uint16_to_charstr(Data3) << std::endl;
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uint8_t Data4[8];
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if (fread(&Data4, sizeof(uint8_t), 8, hFile) < 1)
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throw std::runtime_error("can't read fmt ex Data4");
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dwChunkPosition += sizeof (uint8_t)*8;
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for (uint8_t i=0; i<8; i++)
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{
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std::cout << "fmt Data4["<<static_cast<uint16_t>(i)<<"]: "
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<< uint8_to_charstr(Data4[i]) << std::endl;
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}
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uint16_t remaining_fmt_data = cb_size - 22;
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uint8_t dummy;
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std::cout << "fmt remaining data: " << remaining_fmt_data << std::endl;
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for (uint16_t i=0; i<remaining_fmt_data; i++)
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{
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if (fread(&dummy, sizeof(uint8_t), 1, hFile) < 1)
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throw std::runtime_error("can't read fmt ex padding");
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dwChunkPosition += sizeof (uint8_t);
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std::cout << "fmt dummy["<<i<<"]: "
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<< uint8_to_charstr(dummy) << std::endl;
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}
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} // end if cbSize > 22
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std::cout << "fmt chunk position: " << dwChunkPosition - fmt_chunk_start << std::endl;
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}
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// ignore data until we find sub-chunk data
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auto print_sub_chunk = [&]()
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{ /* data sub-chunk - 8 bytes + data */
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uint32_t chunkSize;
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if (fread(&chunkID, sizeof(uint32_t), 1, hFile) < 1)
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{
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if (feof(hFile))
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{
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std::cout << "reached end of file at: " << dwChunkPosition << std::endl;
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return;
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}
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throw std::runtime_error("can't read chunkID");
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}
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dwChunkPosition += sizeof (uint32_t);
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if (chunkID == fourccDATA)
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{
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std::cout << "data chunk position: " << dwChunkPosition - sizeof(uint32_t) << std::endl;
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std::cout << "data: "
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<< uint32_to_charstr(chunkID) << std::endl;
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if (fread(&chunkSize, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read chunkSize");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "data chunkSize: "
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<< uint32_to_charstr(chunkSize) << std::endl;
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// skip the rest
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fseek(hFile, chunkSize, SEEK_CUR);
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dwChunkPosition += chunkSize;
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}
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else if (chunkID == fourccDPDS)
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{
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std::cout << "dpds chunk position: " << dwChunkPosition - sizeof(uint32_t) << std::endl;
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std::cout << "dpds: "
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<< uint32_to_charstr(chunkID) << std::endl;
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if (fread(&chunkSize, sizeof(uint32_t), 1, hFile) < 1)
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throw std::runtime_error("can't read chunkSize");
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dwChunkPosition += sizeof (uint32_t);
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std::cout << "dpds chunkSize: "
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<< uint32_to_charstr(chunkSize) << std::endl;
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// skip the rest
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fseek(hFile, chunkSize, SEEK_CUR);
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dwChunkPosition += chunkSize;
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}
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else
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{
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std::cout << "unknown chunkID at position: " << dwChunkPosition - sizeof(uint32_t) << std::endl;
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std::cout << "unhandled chunk: "
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<< uint32_to_charstr(chunkID) << std::endl;
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}
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};
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if (!feof(hFile))
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print_sub_chunk();
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if (!feof(hFile))
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print_sub_chunk();
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return 0;
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}
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int main(int argc, char *argv[]) {
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/* process command line arguments. This is just a test program, didn't go too nuts with validation. */
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if (argc < 2) {
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printf("Usage: %s filename\n", argv[0]);
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printf(" - filename (required): can be either a WAV or xWMA audio file.\n");
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return -1;
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}
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if (load_data(argv[1]) != 0)
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{
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printf("Error loading data\n");
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return -1;
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}
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printf("success\n");
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return 0;
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}
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