156 	struct wav_header hdr;  in wav_play()  local
163 	if (read(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) {  in wav_play()
168             hdr.num_channels, hdr.sample_rate, hdr.bits_per_sample,  in wav_play()
169             hdr.audio_format == FORMAT_PCM ? "PCM" : "unknown");  in wav_play()
171     if ((hdr.riff_id != ID_RIFF) ||  in wav_play()
172         (hdr.riff_fmt != ID_WAVE) ||  in wav_play()
173         (hdr.fmt_id != ID_FMT)) {  in wav_play()
177     if ((hdr.audio_format != FORMAT_PCM) ||  in wav_play()
178         (hdr.fmt_sz != 16)) {  in wav_play()
182     if (hdr.bits_per_sample != 16) {  in wav_play()
187     play_file(hdr.sample_rate, hdr.num_channels,  in wav_play()
188               fd, hdr.data_sz);  in wav_play()
195     struct wav_header hdr;  in wav_rec()  local
203     hdr.riff_id = ID_RIFF;  in wav_rec()
204     hdr.riff_sz = 0;  in wav_rec()
205     hdr.riff_fmt = ID_WAVE;  in wav_rec()
206     hdr.fmt_id = ID_FMT;  in wav_rec()
207     hdr.fmt_sz = 16;  in wav_rec()
208     hdr.audio_format = FORMAT_PCM;  in wav_rec()
209     hdr.num_channels = channels;  in wav_rec()
210     hdr.sample_rate = rate;  in wav_rec()
211     hdr.byte_rate = hdr.sample_rate * hdr.num_channels * 2;  in wav_rec()
212     hdr.block_align = hdr.num_channels * 2;  in wav_rec()
213     hdr.bits_per_sample = 16;  in wav_rec()
214     hdr.data_id = ID_DATA;  in wav_rec()
215     hdr.data_sz = 0;  in wav_rec()
222     write(fd, &hdr, sizeof(hdr));  in wav_rec()
237     cfg.channel_count = hdr.num_channels;  in wav_rec()
238     cfg.sample_rate = hdr.sample_rate;  in wav_rec()
283     hdr.data_sz = total;  in wav_rec()
284     hdr.riff_sz = total + 8 + 16 + 8;  in wav_rec()
286     write(fd, &hdr, sizeof(hdr));  in wav_rec()