143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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cddump.c
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Abstract:
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dump cd tracks to wav files
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Environment:
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User mode only
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Revision History:
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05-26-98 : Created
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--*/
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#include <windows.h>
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#include <stdio.h>
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#include "wav.h"
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ULONG32
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DumpWavHeader(
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HANDLE OutFile,
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ULONG32 Samples,
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ULONG32 SamplesPerSecond,
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USHORT Channels,
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USHORT BitsPerSample
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)
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{
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WAV_HEADER_CHUNK Header;
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ULONG32 temp;
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Header.ChunkId = ChunkIdRiff;
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Header.RiffType = RiffTypeWav;
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Header.Format.ChunkId = ChunkIdFormat;
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Header.Format.ChunkSize = sizeof(WAV_FORMAT_CHUNK) - (sizeof(ULONG)*2);
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Header.Format.FormatTag = FormatTagUncompressed;
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Header.Format.BitsPerSample = BitsPerSample;
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temp = (BitsPerSample+7)/8; // temp = bytes per sample rounded up
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Header.Format.Channels = Channels;
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temp *= Channels; // temp = bytes for all channels
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if (temp > (USHORT)-1) {
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fprintf(stderr, "Bytes for all channels exceeds MAXUSHORT, not a valid "
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"option for WAV file\n");
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return -1;
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}
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Header.Format.BlockAlign = (USHORT)temp;
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Header.Format.SamplesPerSec = SamplesPerSecond;
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Header.Format.AvgBytesPerSec = temp * SamplesPerSecond;
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temp *= Samples; // temp = number of total bytes
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temp *= 2; // unknown why this is needed.
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Header.Data.ChunkSize = temp;
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Header.Data.ChunkId = ChunkIdData;
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Header.ChunkSize = temp + sizeof(WAV_HEADER_CHUNK); // 54
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if (!WriteFile( OutFile, &Header, sizeof(Header), &temp, NULL ) ) {
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fprintf(stderr, "Unable to write header\n" );
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return -1;
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}
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return 0;
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}
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VOID
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ReadWavHeader(
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HANDLE InFile
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)
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{
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WAV_HEADER_CHUNK Header;
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ULONG temp;
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if (!ReadFile(InFile, &Header, sizeof(Header), &temp, NULL) ||
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temp != sizeof(Header)
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) {
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fprintf(stderr, "Unable to read header %x\n", GetLastError());
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return;
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}
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if (Header.ChunkId != ChunkIdRiff) {
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printf("ChunkId is not RIFF (%x)\n", Header.ChunkId);
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return;
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}
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if (Header.RiffType != RiffTypeWav) {
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printf("RiffType is not RiffTypeWav (%x)\n", Header.RiffType);
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return;
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}
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if (Header.Format.ChunkId != ChunkIdFormat) {
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printf("Format.ChunkId is not ChunkIdFormat (%x)\n",
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Header.Format.ChunkId);
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return;
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}
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if (Header.Format.ChunkSize != sizeof(WAV_FORMAT_CHUNK) - (2*sizeof(ULONG))) {
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printf("Format.ChunkSize is not %x (%x)\n",
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sizeof(WAV_FORMAT_CHUNK) - (2*sizeof(ULONG)),
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Header.Format.ChunkSize);
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return;
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}
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if (Header.Format.FormatTag != FormatTagUncompressed) {
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printf("Format. is not Uncompressed (%x)\n", Header.Format.FormatTag);
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return;
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}
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if (Header.Data.ChunkId != ChunkIdData) {
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printf("Data.ChunkId is not ChunkIdData (%x)\n",
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Header.Data.ChunkId);
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return;
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}
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printf("Uncompressed RIFF/Wav File\n");
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printf("\t%2d bits per sample\n", Header.Format.BitsPerSample);
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printf("\t%2d channels\n", Header.Format.Channels);
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printf("\t%2d samples per second\n", Header.Format.SamplesPerSec);
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printf("\t%2d average bytes per second\n", Header.Format.AvgBytesPerSec);
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printf("Total data available to player: %d\n", Header.Data.ChunkSize);
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temp = Header.Data.ChunkSize / Header.Format.AvgBytesPerSec;
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printf("\t%d seconds of audio\n",
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temp
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);
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return;
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}
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