The branch stable/14 has been updated by christos: URL: https://cgit.FreeBSD.org/src/commit/?id=a33356100b850d79d11b3630fda2b421f1ccba8d
commit a33356100b850d79d11b3630fda2b421f1ccba8d Author: Christos Margiolis <[email protected]> AuthorDate: 2025-03-10 20:38:23 +0000 Commit: Christos Margiolis <[email protected]> CommitDate: 2025-03-17 18:28:54 +0000 sound: Simplify pcm/feeder_mixer.c - Get rid of macro magic. - Make feed_mixer_info handling similar to most feeders. Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D48394 (cherry picked from commit 4021fa32d92d656d3d43186cc231695c7ad53d33) --- sys/dev/sound/pcm/feeder_mixer.c | 173 +++++++++++++++------------------------ 1 file changed, 68 insertions(+), 105 deletions(-) diff --git a/sys/dev/sound/pcm/feeder_mixer.c b/sys/dev/sound/pcm/feeder_mixer.c index 9a7d75198692..f5f2b9bc9c36 100644 --- a/sys/dev/sound/pcm/feeder_mixer.c +++ b/sys/dev/sound/pcm/feeder_mixer.c @@ -42,136 +42,83 @@ #undef SND_FEEDER_MULTIFORMAT #define SND_FEEDER_MULTIFORMAT 1 -typedef void (*feed_mixer_t)(uint8_t *, uint8_t *, uint32_t); - -#define FEEDMIXER_DECLARE(SIGN, BIT, ENDIAN) \ -static void \ -feed_mixer_##SIGN##BIT##ENDIAN(uint8_t *src, uint8_t *dst, \ - uint32_t count) \ -{ \ - intpcm##BIT##_t z; \ - intpcm_t x, y; \ - \ - src += count; \ - dst += count; \ - \ - do { \ - src -= PCM_##BIT##_BPS; \ - dst -= PCM_##BIT##_BPS; \ - count -= PCM_##BIT##_BPS; \ - x = pcm_sample_read_calc(src, \ - AFMT_##SIGN##BIT##_##ENDIAN); \ - y = pcm_sample_read_calc(dst, \ - AFMT_##SIGN##BIT##_##ENDIAN); \ - z = INTPCM##BIT##_T(x) + y; \ - x = pcm_clamp_calc(z, AFMT_##SIGN##BIT##_##ENDIAN); \ - pcm_sample_write(dst, x, \ - AFMT_##SIGN##BIT##_##ENDIAN); \ - } while (count != 0); \ -} - -#if BYTE_ORDER == LITTLE_ENDIAN || defined(SND_FEEDER_MULTIFORMAT) -FEEDMIXER_DECLARE(S, 16, LE) -FEEDMIXER_DECLARE(S, 32, LE) -#endif -#if BYTE_ORDER == BIG_ENDIAN || defined(SND_FEEDER_MULTIFORMAT) -FEEDMIXER_DECLARE(S, 16, BE) -FEEDMIXER_DECLARE(S, 32, BE) -#endif -#ifdef SND_FEEDER_MULTIFORMAT -FEEDMIXER_DECLARE(S, 8, NE) -FEEDMIXER_DECLARE(S, 24, LE) -FEEDMIXER_DECLARE(S, 24, BE) -FEEDMIXER_DECLARE(U, 8, NE) -FEEDMIXER_DECLARE(U, 16, LE) -FEEDMIXER_DECLARE(U, 24, LE) -FEEDMIXER_DECLARE(U, 32, LE) -FEEDMIXER_DECLARE(U, 16, BE) -FEEDMIXER_DECLARE(U, 24, BE) -FEEDMIXER_DECLARE(U, 32, BE) -#endif - struct feed_mixer_info { uint32_t format; + uint32_t channels; int bps; - feed_mixer_t mix; }; -#define FEEDMIXER_ENTRY(SIGN, BIT, ENDIAN) \ - { \ - AFMT_##SIGN##BIT##_##ENDIAN, PCM_##BIT##_BPS, \ - feed_mixer_##SIGN##BIT##ENDIAN \ - } - -static struct feed_mixer_info feed_mixer_info_tab[] = { - FEEDMIXER_ENTRY(S, 8, NE), -#if BYTE_ORDER == LITTLE_ENDIAN || defined(SND_FEEDER_MULTIFORMAT) - FEEDMIXER_ENTRY(S, 16, LE), - FEEDMIXER_ENTRY(S, 32, LE), -#endif -#if BYTE_ORDER == BIG_ENDIAN || defined(SND_FEEDER_MULTIFORMAT) - FEEDMIXER_ENTRY(S, 16, BE), - FEEDMIXER_ENTRY(S, 32, BE), -#endif -#ifdef SND_FEEDER_MULTIFORMAT - FEEDMIXER_ENTRY(S, 24, LE), - FEEDMIXER_ENTRY(S, 24, BE), - FEEDMIXER_ENTRY(U, 8, NE), - FEEDMIXER_ENTRY(U, 16, LE), - FEEDMIXER_ENTRY(U, 24, LE), - FEEDMIXER_ENTRY(U, 32, LE), - FEEDMIXER_ENTRY(U, 16, BE), - FEEDMIXER_ENTRY(U, 24, BE), - FEEDMIXER_ENTRY(U, 32, BE), -#endif - { AFMT_AC3, PCM_16_BPS, NULL }, - { AFMT_MU_LAW, PCM_8_BPS, feed_mixer_U8NE }, /* dummy */ - { AFMT_A_LAW, PCM_8_BPS, feed_mixer_U8NE } /* dummy */ -}; +static void +feed_mixer_apply(uint8_t *src, uint8_t *dst, uint32_t count, const uint32_t fmt) +{ + intpcm32_t z; + intpcm_t x, y; -#define FEEDMIXER_TAB_SIZE ((int32_t) \ - (sizeof(feed_mixer_info_tab) / \ - sizeof(feed_mixer_info_tab[0]))) + src += count; + dst += count; -#define FEEDMIXER_DATA(i, c) ((void *) \ - ((uintptr_t)((((i) & 0x1f) << 7) | \ - ((c) & 0x7f)))) -#define FEEDMIXER_INFOIDX(d) ((uint32_t)((uintptr_t)(d) >> 7) & 0x1f) -#define FEEDMIXER_CHANNELS(d) ((uint32_t)((uintptr_t)(d)) & 0x7f) + do { + src -= AFMT_BPS(fmt); + dst -= AFMT_BPS(fmt); + count -= AFMT_BPS(fmt); + x = pcm_sample_read_calc(src, fmt); + y = pcm_sample_read_calc(dst, fmt); + z = INTPCM_T(x) + y; + x = pcm_clamp_calc(z, fmt); + pcm_sample_write(dst, x, fmt); + } while (count != 0); +} static int feed_mixer_init(struct pcm_feeder *f) { - int i; + struct feed_mixer_info *info; if (f->desc->in != f->desc->out) return (EINVAL); - for (i = 0; i < FEEDMIXER_TAB_SIZE; i++) { - if (AFMT_ENCODING(f->desc->in) == - feed_mixer_info_tab[i].format) { - f->data = - FEEDMIXER_DATA(i, AFMT_CHANNEL(f->desc->in)); - return (0); - } - } + info = malloc(sizeof(*info), M_DEVBUF, M_NOWAIT | M_ZERO); + if (info == NULL) + return (ENOMEM); + + info->format = AFMT_ENCODING(f->desc->in); + info->channels = AFMT_CHANNEL(f->desc->in); + info->bps = AFMT_BPS(f->desc->in); + + f->data = info; - return (EINVAL); + return (0); +} + +static int +feed_mixer_free(struct pcm_feeder *f) +{ + struct feed_mixer_info *info; + + info = f->data; + if (info != NULL) + free(info, M_DEVBUF); + + f->data = NULL; + + return (0); } static int feed_mixer_set(struct pcm_feeder *f, int what, int value) { + struct feed_mixer_info *info; + + info = f->data; switch (what) { case FEEDMIXER_CHANNELS: if (value < SND_CHN_MIN || value > SND_CHN_MAX) return (EINVAL); - f->data = FEEDMIXER_DATA(FEEDMIXER_INFOIDX(f->data), value); + info->channels = (uint32_t)value; break; default: return (EINVAL); - break; } return (0); @@ -297,8 +244,8 @@ feed_mixer_feed(struct pcm_feeder *f, struct pcm_channel *c, uint8_t *b, if (sz < count) count = sz; - info = &feed_mixer_info_tab[FEEDMIXER_INFOIDX(f->data)]; - sz = info->bps * FEEDMIXER_CHANNELS(f->data); + info = f->data; + sz = info->bps * info->channels; count = SND_FXROUND(count, sz); if (count < sz) return (0); @@ -331,7 +278,7 @@ feed_mixer_feed(struct pcm_feeder *f, struct pcm_channel *c, uint8_t *b, if ((ch->flags & CHN_F_MMAP) && !(ch->flags & CHN_F_CLOSING)) sndbuf_acquire(ch->bufsoft, NULL, sndbuf_getfree(ch->bufsoft)); - if (info->mix == NULL) { + if (c->flags & CHN_F_PASSTHROUGH) { /* * Passthrough. Dump the first digital/passthrough * channel into destination buffer, and the rest into @@ -373,7 +320,22 @@ feed_mixer_feed(struct pcm_feeder *f, struct pcm_channel *c, uint8_t *b, f->desc->out), mcnt); mcnt = 0; } - info->mix(tmp, b, cnt); + switch (info->format) { + case AFMT_S16_NE: + feed_mixer_apply(tmp, b, cnt, + AFMT_S16_NE); + break; + case AFMT_S24_NE: + feed_mixer_apply(tmp, b, cnt, + AFMT_S24_NE); + break; + case AFMT_S32_NE: + feed_mixer_apply(tmp, b, cnt, + AFMT_S32_NE); + break; + } + feed_mixer_apply(tmp, b, cnt, + info->format); if (cnt > rcnt) rcnt = cnt; } @@ -397,6 +359,7 @@ static struct pcm_feederdesc feeder_mixer_desc[] = { static kobj_method_t feeder_mixer_methods[] = { KOBJMETHOD(feeder_init, feed_mixer_init), + KOBJMETHOD(feeder_free, feed_mixer_free), KOBJMETHOD(feeder_set, feed_mixer_set), KOBJMETHOD(feeder_feed, feed_mixer_feed), KOBJMETHOD_END
