2  * SPDX-License-Identifier: BSD-2-Clause
35  * Split input buffer into channels. The input buffer is in interleaved format,
36  * which means if we have 2 channels (L and R), this is what the buffer of 8
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()
72  * Convert channels into interleaved format and put into output buffer
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()
114 	int32_t *channels;  in main()  local
119 	channels = malloc(bytes);  in main()
127 		 * Strictly speaking, we could omit "channels" and operate only  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()
142 	free(channels);  in main()