1 files changed, 80 insertions, 0 deletions

diff --git a/apps/codecs/libcook/main.c b/apps/codecs/libcook/main.c
index 3c671e0c3f..c13e74a201 100644
--- a/apps/codecs/libcook/main.c
+++ b/apps/codecs/libcook/main.c
@@ -37,6 +37,86 @@
 #  endif
 #endif
 
+static unsigned char wav_header[44]={
+    'R','I','F','F',//  0 - ChunkID
+    0,0,0,0,        //  4 - ChunkSize (filesize-8)
+    'W','A','V','E',//  8 - Format
+    'f','m','t',' ',// 12 - SubChunkID
+    16,0,0,0,       // 16 - SubChunk1ID  // 16 for PCM
+    1,0,            // 20 - AudioFormat (1=Uncompressed)
+    2,0,            // 22 - NumChannels
+    0,0,0,0,        // 24 - SampleRate in Hz
+    0,0,0,0,        // 28 - Byte Rate (SampleRate*NumChannels*(BitsPerSample/8)
+    4,0,            // 32 - BlockAlign (== NumChannels * BitsPerSample/8)
+    16,0,           // 34 - BitsPerSample
+    'd','a','t','a',// 36 - Subchunk2ID
+    0,0,0,0         // 40 - Subchunk2Size
+};
+
+int open_wav(char* filename) {
+    int fd,res;
+
+    fd=open(filename,O_CREAT|O_WRONLY|O_TRUNC,S_IRUSR|S_IWUSR);
+    if (fd >= 0) {
+        res = write(fd,wav_header,sizeof(wav_header));
+    }
+
+    return(fd);
+}
+
+void close_wav(int fd, RMContext *rmctx) {
+    int x,res;
+    int filesize;
+    int bytes_per_sample = 2;
+    int samples_per_frame = rmctx->samples_pf_pc;
+    int nb_channels = rmctx->nb_channels;
+    int sample_rate = rmctx->sample_rate;
+    int nb_frames = rmctx->audio_framesize/rmctx->block_align * rmctx->nb_packets - 2; // first 2 frames have no valid audio; skipped in output
+
+    filesize= samples_per_frame*bytes_per_sample*nb_frames +44;
+    printf("Filesize = %d\n",filesize);
+
+    // ChunkSize
+    x=filesize-8;
+    wav_header[4]=(x&0xff);
+    wav_header[5]=(x&0xff00)>>8;
+    wav_header[6]=(x&0xff0000)>>16;
+    wav_header[7]=(x&0xff000000)>>24;
+
+    // Number of channels
+    wav_header[22]=nb_channels;
+
+    // Samplerate
+    wav_header[24]=sample_rate&0xff;
+    wav_header[25]=(sample_rate&0xff00)>>8;
+    wav_header[26]=(sample_rate&0xff0000)>>16;
+    wav_header[27]=(sample_rate&0xff000000)>>24;
+
+    // ByteRate
+    x=sample_rate*bytes_per_sample*nb_channels;
+    wav_header[28]=(x&0xff);
+    wav_header[29]=(x&0xff00)>>8;
+    wav_header[30]=(x&0xff0000)>>16;
+    wav_header[31]=(x&0xff000000)>>24;
+
+    // BlockAlign
+    wav_header[32]=rmctx->block_align;//2*rmctx->nb_channels;
+
+    // Bits per sample
+    wav_header[34]=16;
+    
+    // Subchunk2Size
+    x=filesize-44;
+    wav_header[40]=(x&0xff);
+    wav_header[41]=(x&0xff00)>>8;
+    wav_header[42]=(x&0xff0000)>>16;
+    wav_header[43]=(x&0xff000000)>>24;
+
+    lseek(fd,0,SEEK_SET);
+    res = write(fd,wav_header,sizeof(wav_header));
+    close(fd);
+}
+
 int main(int argc, char *argv[])
 {
     int fd, fd_dec;