[stage: 3.2/9]
malloc()less feeder_vchan. Informations can be retrieved dynamically by doing table lookup on static data. Reduce mixing overhead by doing direct copy on first channel. Mixing process will begin starting from second channel onwards.
This commit is contained in:
Ariff Abdullah
parent
3e3981e8a0
commit
e956c4e11f
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=167643
@ -43,15 +43,7 @@ MALLOC_DEFINE(M_VCHANFEEDER, "vchanfeed", "pcm vchan feeder");
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#define VCHAN_DEFAULT_AFMT (AFMT_S16_LE | AFMT_STEREO)
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#define VCHAN_DEFAULT_STRFMT "s16le"
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struct feed_vchan_info;
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typedef uint32_t (*feed_vchan_mixer)(struct feed_vchan_info *,
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uint8_t *, uint8_t *, uint32_t);
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struct feed_vchan_info {
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uint32_t bps, channels, zero_sample;
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feed_vchan_mixer mix;
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};
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typedef uint32_t (*feed_vchan_mixer)(uint8_t *, uint8_t *, uint32_t);
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struct vchinfo {
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uint32_t spd, fmt, fmts[2], blksz, bps, run;
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@ -107,28 +99,28 @@ static const struct {
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#define FEEDER_VCHAN_MIX(FMTBIT, VCHAN_INTCAST, SIGN, SIGNS, ENDIAN, ENDIANS) \
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static uint32_t \
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feed_vchan_mix_##SIGNS##FMTBIT##ENDIANS(struct feed_vchan_info *info, \
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uint8_t *to, uint8_t *tmp, uint32_t count) \
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feed_vchan_mix_##SIGNS##FMTBIT##ENDIANS(uint8_t *to, uint8_t *tmp, \
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uint32_t count) \
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{ \
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uint32_t bps; \
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int32_t x, y; \
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VCHAN_INTCAST z; \
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int i; \
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\
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bps = info->bps; \
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i = count; \
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tmp += i; \
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to += i; \
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while (i > 0) { \
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tmp -= bps; \
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to -= bps; \
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i -= bps; \
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\
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do { \
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tmp -= PCM_##FMTBIT##_BPS; \
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to -= PCM_##FMTBIT##_BPS; \
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i -= PCM_##FMTBIT##_BPS; \
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x = PCM_READ_##SIGN##FMTBIT##_##ENDIAN(tmp); \
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y = PCM_READ_##SIGN##FMTBIT##_##ENDIAN(to); \
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z = (VCHAN_INTCAST)x + y; \
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x = PCM_CLAMP_##SIGN##FMTBIT(z); \
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VCHAN_PCM_WRITE_##SIGN##FMTBIT##_##ENDIAN(to, x); \
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} \
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} while (i != 0); \
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\
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return count; \
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}
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@ -139,7 +131,6 @@ FEEDER_VCHAN_MIX(32, intpcm_t, S, s, LE, le)
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FEEDER_VCHAN_MIX(16, int32_t, S, s, BE, be)
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FEEDER_VCHAN_MIX(24, int32_t, S, s, BE, be)
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FEEDER_VCHAN_MIX(32, intpcm_t, S, s, BE, be)
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/* unsigned */
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FEEDER_VCHAN_MIX(8, int32_t, U, u, NE, ne)
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FEEDER_VCHAN_MIX(16, int32_t, U, u, LE, le)
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FEEDER_VCHAN_MIX(24, int32_t, U, u, LE, le)
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@ -148,93 +139,72 @@ FEEDER_VCHAN_MIX(16, int32_t, U, u, BE, be)
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FEEDER_VCHAN_MIX(24, int32_t, U, u, BE, be)
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FEEDER_VCHAN_MIX(32, intpcm_t, U, u, BE, be)
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static int
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feed_vchan_setup(struct pcm_feeder *f)
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{
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struct feed_vchan_info *info = f->data;
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static const struct {
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uint32_t format; /* pcm / audio format */
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uint32_t bps; /* bytes-per-sample, regardless of
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total channels */
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feed_vchan_mixer mix;
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} vchan_mix_tbl[] = {
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{ AFMT_S8, PCM_8_BPS, feed_vchan_mix_s8ne },
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{ AFMT_S16_LE, PCM_16_BPS, feed_vchan_mix_s16le },
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{ AFMT_S24_LE, PCM_24_BPS, feed_vchan_mix_s24le },
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{ AFMT_S32_LE, PCM_32_BPS, feed_vchan_mix_s32le },
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{ AFMT_S16_BE, PCM_16_BPS, feed_vchan_mix_s16be },
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{ AFMT_S24_BE, PCM_24_BPS, feed_vchan_mix_s24be },
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{ AFMT_S32_BE, PCM_32_BPS, feed_vchan_mix_s32be },
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/* unsigned */
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{ AFMT_U8, PCM_8_BPS, feed_vchan_mix_u8ne },
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{ AFMT_U16_LE, PCM_16_BPS, feed_vchan_mix_u16le },
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{ AFMT_U24_LE, PCM_24_BPS, feed_vchan_mix_u24le },
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{ AFMT_U32_LE, PCM_32_BPS, feed_vchan_mix_u32le },
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{ AFMT_U16_BE, PCM_16_BPS, feed_vchan_mix_u16be },
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{ AFMT_U24_BE, PCM_24_BPS, feed_vchan_mix_u24be },
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{ AFMT_U32_BE, PCM_32_BPS, feed_vchan_mix_u32be },
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{ 0, 0, NULL },
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};
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uint32_t i;
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struct feed_vchan_info {
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uint32_t format;
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int bps;
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feed_vchan_mixer mix;
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};
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for (i = 0; i < sizeof(vchan_mix_tbl) / sizeof(*vchan_mix_tbl); i++) {
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if (vchan_mix_tbl[i].format == 0)
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return -1;
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if ((f->desc->out & ~AFMT_STEREO) == vchan_mix_tbl[i].format) {
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info->bps = vchan_mix_tbl[i].bps;
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info->mix = vchan_mix_tbl[i].mix;
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break;
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}
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}
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static struct feed_vchan_info feed_vchan_info_tbl[] = {
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{ AFMT_S8, PCM_8_BPS, feed_vchan_mix_s8ne },
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{ AFMT_S16_LE, PCM_16_BPS, feed_vchan_mix_s16le },
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{ AFMT_S24_LE, PCM_24_BPS, feed_vchan_mix_s24le },
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{ AFMT_S32_LE, PCM_32_BPS, feed_vchan_mix_s32le },
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{ AFMT_S16_BE, PCM_16_BPS, feed_vchan_mix_s16be },
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{ AFMT_S24_BE, PCM_24_BPS, feed_vchan_mix_s24be },
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{ AFMT_S32_BE, PCM_32_BPS, feed_vchan_mix_s32be },
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{ AFMT_U8, PCM_8_BPS, feed_vchan_mix_u8ne },
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{ AFMT_U16_LE, PCM_16_BPS, feed_vchan_mix_u16le },
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{ AFMT_U24_LE, PCM_24_BPS, feed_vchan_mix_u24le },
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{ AFMT_U32_LE, PCM_32_BPS, feed_vchan_mix_u32le },
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{ AFMT_U16_BE, PCM_16_BPS, feed_vchan_mix_u16be },
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{ AFMT_U24_BE, PCM_24_BPS, feed_vchan_mix_u24be },
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{ AFMT_U32_BE, PCM_32_BPS, feed_vchan_mix_u32be },
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};
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info->channels = (f->desc->out & AFMT_STEREO) ? 2 : 1;
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info->zero_sample = (f->desc->out & AFMT_SIGNED) ? 0x00 : 0x80;
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return 0;
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}
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#define FVCHAN_DATA(i, c) ((intptr_t)((((i) & 0x1f) << 4) | ((c) & 0xf)))
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#define FVCHAN_INFOIDX(m) (((m) >> 4) & 0x1f)
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#define FVCHAN_CHANNELS(m) ((m) & 0xf)
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static int
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feed_vchan_init(struct pcm_feeder *f)
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{
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struct feed_vchan_info *info;
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int i, channels;
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if (f->desc->out != f->desc->in)
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return EINVAL;
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info = malloc(sizeof(*info), M_VCHANFEEDER, M_NOWAIT | M_ZERO);
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if (info == NULL)
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return ENOMEM;
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f->data = info;
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return feed_vchan_setup(f);
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}
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channels = (f->desc->out & AFMT_STEREO) ? 2 : 1;
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static int
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feed_vchan_free(struct pcm_feeder *f)
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{
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struct feed_vchan_info *info = f->data;
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for (i = 0; i < sizeof(feed_vchan_info_tbl) /
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sizeof(feed_vchan_info_tbl[0]); i++) {
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if ((f->desc->out & ~AFMT_STEREO) ==
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feed_vchan_info_tbl[i].format) {
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f->data = (void *)FVCHAN_DATA(i, channels);
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return 0;
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}
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}
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if (info)
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free(info, M_VCHANFEEDER);
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f->data = NULL;
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return 0;
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return -1;
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}
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static int
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feed_vchan(struct pcm_feeder *f, struct pcm_channel *c, uint8_t *b,
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uint32_t count, void *source)
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{
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struct feed_vchan_info *info = f->data;
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struct feed_vchan_info *info;
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struct snd_dbuf *src = source;
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struct pcmchan_children *cce;
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struct pcm_channel *ch;
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uint32_t cnt, rcnt = 0, sz;
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uint32_t cnt, mcnt, rcnt, sz;
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uint8_t *tmp;
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sz = sndbuf_getsize(src);
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if (sz < count)
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count = sz;
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sz = info->bps * info->channels;
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info = &feed_vchan_info_tbl[FVCHAN_INFOIDX((intptr_t)f->data)];
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sz = info->bps * FVCHAN_CHANNELS((intptr_t)f->data);
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count -= count % sz;
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if (count < sz)
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return 0;
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@ -242,22 +212,39 @@ feed_vchan(struct pcm_feeder *f, struct pcm_channel *c, uint8_t *b,
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/*
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* we are going to use our source as a temporary buffer since it's
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* got no other purpose. we obtain our data by traversing the channel
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* list of children and calling vchan_mix_* to mix count bytes from each
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* into our destination buffer, b
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* list of children and calling vchan_mix_* to mix count bytes from
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* each into our destination buffer, b
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*/
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tmp = sndbuf_getbuf(src);
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memset(b, info->zero_sample, count);
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rcnt = 0;
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mcnt = 0;
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SLIST_FOREACH(cce, &c->children, link) {
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ch = cce->channel;
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CHN_LOCK(ch);
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if (ch->flags & CHN_F_TRIGGERED) {
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if (ch->flags & CHN_F_MAPPED)
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sndbuf_acquire(ch->bufsoft, NULL, sndbuf_getfree(ch->bufsoft));
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cnt = FEEDER_FEED(ch->feeder, ch, tmp, count, ch->bufsoft);
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if (!(ch->flags & CHN_F_TRIGGERED)) {
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CHN_UNLOCK(ch);
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continue;
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}
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if (ch->flags & CHN_F_MAPPED)
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sndbuf_acquire(ch->bufsoft, NULL,
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sndbuf_getfree(ch->bufsoft));
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if (rcnt == 0)
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rcnt = FEEDER_FEED(ch->feeder, ch, b, count,
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ch->bufsoft);
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else {
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cnt = FEEDER_FEED(ch->feeder, ch, tmp, count,
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ch->bufsoft);
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cnt -= cnt % sz;
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cnt = info->mix(info, b, tmp, cnt);
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if (cnt > rcnt)
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rcnt = cnt;
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if (cnt != 0) {
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if (mcnt++ == 0 && rcnt < count)
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memset(b + rcnt,
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sndbuf_zerodata(f->desc->out),
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count - rcnt);
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cnt = info->mix(b, tmp, cnt);
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if (cnt > rcnt)
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rcnt = cnt;
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}
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}
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CHN_UNLOCK(ch);
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}
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@ -283,7 +270,6 @@ static struct pcm_feederdesc feeder_vchan_desc[] = {
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{FEEDER_MIXER, AFMT_S16_BE | AFMT_STEREO, AFMT_S16_BE | AFMT_STEREO, 0},
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{FEEDER_MIXER, AFMT_S24_BE | AFMT_STEREO, AFMT_S24_BE | AFMT_STEREO, 0},
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{FEEDER_MIXER, AFMT_S32_BE | AFMT_STEREO, AFMT_S32_BE | AFMT_STEREO, 0},
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/* unsigned */
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{FEEDER_MIXER, AFMT_U8, AFMT_U8, 0},
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{FEEDER_MIXER, AFMT_U16_LE, AFMT_U16_LE, 0},
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{FEEDER_MIXER, AFMT_U24_LE, AFMT_U24_LE, 0},
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@ -302,7 +288,6 @@ static struct pcm_feederdesc feeder_vchan_desc[] = {
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};
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static kobj_method_t feeder_vchan_methods[] = {
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KOBJMETHOD(feeder_init, feed_vchan_init),
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KOBJMETHOD(feeder_free, feed_vchan_free),
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KOBJMETHOD(feeder_feed, feed_vchan),
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{0, 0}
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};
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