sys/dev/aurateconv.c

7  * This code is derived from software contributed to The NetBSD Foundation
61 	audio_params_t from;
97 aurateconv(struct audio_softc *sc, const audio_params_t *from,
103 		 "%u enc=%u:%u\n", __func__, from->sample_rate,
104 		 to->sample_rate, from->channels, to->channels,
105 		 from->validbits, from->precision, to->validbits,
106 		 to->precision, from->encoding, to->encoding));
108 	/* check from/to */
109 	if (from->channels == to->channels
110 	    && from->sample_rate == to->sample_rate)
113 	if (from->encoding != to->encoding
114 	    || from->precision != to->precision
115 	    || from->validbits != to->validbits) {
119 	if ((from->encoding != AUDIO_ENCODING_SLINEAR_LE
120 	     && from->encoding != AUDIO_ENCODING_SLINEAR_BE)
121 	    || (from->precision != 16 && from->precision != 24 && from->precision != 32)) {
127 	if (from->channels > AUDIO_MAX_CHANNELS || from->channels <= 0
129 		printf("%s: invalid channels: from=%u to=%u\n",
130 		       __func__, from->channels, to->channels);
134 	if (from->sample_rate <= 0 || to->sample_rate <= 0) {
135 		printf("%s: invalid sampling rate: from=%u to=%u\n",
136 		       __func__, from->sample_rate, to->sample_rate);
143 	this->count = from->sample_rate < to->sample_rate
144 		? to->sample_rate + from->sample_rate : 0;
145 	this->from = *from;
172 	frame_src = (this->from.precision / 8) * this->from.channels;
178 	m *= this->from.sample_rate;
189 	switch (this->from.encoding) {
191 		switch (this->from.precision) {
204 		switch (this->from.precision) {
218 	       __func__, this->from.encoding, this->from.precision);
300 		} else if (from->channels <= to->channels) { \
315 		} else {	/* from->channels < to->channels */ \
337 	const audio_params_t *from, *to; \
348 	from = &this->from; \
350 	if (this->from.sample_rate == this->to.sample_rate) { \
352 			READ_Sn(BITS, EN, v, src, r, from); \
353 			WRITE_Sn(BITS, EN, v, dst, w, from, to); \
355 	} else if (to->sample_rate < from->sample_rate) { \
357 			READ_Sn(BITS, EN, v, src, r, from); \
359 			if (this->count >= from->sample_rate) { \
360 				this->count -= from->sample_rate; \
361 				WRITE_Sn(BITS, EN, v, dst, w, from, to); \
366 		values_size = sizeof(int32_t) * from->channels; \
375 				READ_Sn(BITS, EN, next, src, r, from); \
378 			for (i = 0; i < from->channels; i++) \
380 			WRITE_Sn(BITS, EN, v, dst, w, from, to); \
381 			this->count += from->sample_rate; \
401 	const audio_params_t *from, *to; \
413 	from = &this->from; \
415 	if (this->from.sample_rate == this->to.sample_rate) { \
417 			READ_Sn(32, EN, v, src, r, from); \
419 			WRITE_Sn(32, EN, v, dst, w, from, to); \
422 	} else if (to->sample_rate < from->sample_rate) { \
424 			READ_Sn(32, EN, v, src, r, from); \
427 			if (this->count >= from->sample_rate) { \
428 				this->count -= from->sample_rate; \
429 				WRITE_Sn(32, EN, v, dst, w, from, to); \
435 		values_size = sizeof(int32_t) * from->channels; \
445 				READ_Sn(32, EN, next, src, r, from); \
449 			for (i = 0; i < from->channels; i++) \
451 			WRITE_Sn(32, EN, v, dst, w, from, to); \
453 			this->count += from->sample_rate; \