f40bfc9267
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius <nils@rockbox.org> Tested-by: Nils Wallménius <nils@rockbox.org>
110 lines
3 KiB
C
110 lines
3 KiB
C
/*
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demac - A Monkey's Audio decoder
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$Id$
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Copyright (C) Dave Chapman 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
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*/
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#include <stdio.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include "inttypes.h"
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include "parser.h"
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#ifndef __WIN32__
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#define O_BINARY 0
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#endif
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static unsigned char wav_header[44]={
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'R','I','F','F',// 0 - ChunkID
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0,0,0,0, // 4 - ChunkSize (filesize-8)
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'W','A','V','E',// 8 - Format
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'f','m','t',' ',// 12 - SubChunkID
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16,0,0,0, // 16 - SubChunk1ID // 16 for PCM
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1,0, // 20 - AudioFormat (1=Uncompressed)
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2,0, // 22 - NumChannels
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0,0,0,0, // 24 - SampleRate in Hz
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0,0,0,0, // 28 - Byte Rate (SampleRate*NumChannels*(BitsPerSample/8)
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4,0, // 32 - BlockAlign (== NumChannels * BitsPerSample/8)
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16,0, // 34 - BitsPerSample
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'd','a','t','a',// 36 - Subchunk2ID
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0,0,0,0 // 40 - Subchunk2Size
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};
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int open_wav(struct ape_ctx_t* ape_ctx, char* filename)
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{
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int fd;
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int x;
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int filesize;
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int bytespersample;
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fd=open(filename, O_CREAT|O_WRONLY|O_TRUNC|O_BINARY, 0644);
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if (fd < 0)
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return fd;
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bytespersample=ape_ctx->bps/8;
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filesize=ape_ctx->totalsamples*bytespersample*ape_ctx->channels+44;
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// ChunkSize
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x=filesize-8;
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wav_header[4]=(x&0xff);
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wav_header[5]=(x&0xff00)>>8;
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wav_header[6]=(x&0xff0000)>>16;
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wav_header[7]=(x&0xff000000)>>24;
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// Number of channels
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wav_header[22]=ape_ctx->channels;
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// Samplerate
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wav_header[24]=ape_ctx->samplerate&0xff;
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wav_header[25]=(ape_ctx->samplerate&0xff00)>>8;
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wav_header[26]=(ape_ctx->samplerate&0xff0000)>>16;
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wav_header[27]=(ape_ctx->samplerate&0xff000000)>>24;
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// ByteRate
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x=ape_ctx->samplerate*(ape_ctx->bps/8)*ape_ctx->channels;
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wav_header[28]=(x&0xff);
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wav_header[29]=(x&0xff00)>>8;
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wav_header[30]=(x&0xff0000)>>16;
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wav_header[31]=(x&0xff000000)>>24;
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// BlockAlign
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wav_header[32]=(ape_ctx->bps/8)*ape_ctx->channels;
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// Bits per sample
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wav_header[34]=ape_ctx->bps;
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// Subchunk2Size
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x=filesize-44;
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wav_header[40]=(x&0xff);
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wav_header[41]=(x&0xff00)>>8;
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wav_header[42]=(x&0xff0000)>>16;
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wav_header[43]=(x&0xff000000)>>24;
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write(fd,wav_header,sizeof(wav_header));
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return fd;
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}
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