2  * SPDX-License-Identifier: BSD-2-Clause
41 to_channels(struct config *config, void *output)  in to_channels()  argument
43 	uint8_t *in = config->buf;  in to_channels()
48 	for (byte = 0; byte < config->buffer_info.bytes;  in to_channels()
49 	    byte += config->sample_size) {  in to_channels()
54 		i = byte / config->sample_size;  in to_channels()
57 		channel = i % config->audio_info.max_channels;  in to_channels()
60 		offset = i / config->audio_info.max_channels;  in to_channels()
63 		index = (channel * config->chsamples + offset) *  in to_channels()
64 		    config->sample_size;  in to_channels()
67 		memcpy(out+index, in+byte, config->sample_size);  in to_channels()
75 to_interleaved(struct config *config, void *input)  in to_interleaved()  argument
77 	uint8_t *out = config->buf;  in to_interleaved()
82 	for (byte = 0; byte < config->buffer_info.bytes;  in to_interleaved()
83 	    byte += config->sample_size) {  in to_interleaved()
88 		index = byte / config->sample_size;  in to_interleaved()
91 		channel = index / config->chsamples;  in to_interleaved()
94 		offset = index % config->chsamples;  in to_interleaved()
97 		i = (config->audio_info.max_channels * offset + channel) *  in to_interleaved()
98 		    config->sample_size;  in to_interleaved()
101 		memcpy(out+i, in+byte, config->sample_size);  in to_interleaved()
108 	struct config config = {  in main()  local
117 	oss_init(&config);  in main()
118 	bytes = config.buffer_info.bytes;  in main()
122 		if ((rc = read(config.fd, config.buf, bytes)) < bytes) {  in main()
128 		 * using config->buf, but this example tries to show the real  in main()
134 		to_channels(&config, channels);  in main()
135 		to_interleaved(&config, channels);  in main()
136 		if ((rc = write(config.fd, config.buf, bytes)) < bytes) {  in main()
143 	free(config.buf);  in main()
144 	close(config.fd);  in main()