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Completed linear plugin

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This commit is contained in:
Abramo Bagnara 1999-12-25 15:25:46 +00:00
parent cde18e13bc
commit 8738da23d8
2 changed files with 265 additions and 306 deletions
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162
src/pcm/pcm_plugin_build.c
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@ -101,112 +101,96 @@ ssize_t snd_pcm_plugin_hardware_size(PLUGIN_BASE *pb, int channel, size_t trf_si
unsigned int snd_pcm_plugin_formats(unsigned int formats)
{
int linfmts = (SND_PCM_FMT_U8 | SND_PCM_FMT_S8 |
SND_PCM_FMT_U16_LE | SND_PCM_FMT_S16_LE |
SND_PCM_FMT_U16_BE | SND_PCM_FMT_S16_BE |
SND_PCM_FMT_U24_LE | SND_PCM_FMT_S16_LE |
SND_PCM_FMT_U24_BE | SND_PCM_FMT_S16_BE |
SND_PCM_FMT_U32_LE | SND_PCM_FMT_S32_LE |
SND_PCM_FMT_U32_BE | SND_PCM_FMT_S32_BE);
formats |= SND_PCM_FMT_MU_LAW;
#ifndef __KERNEL__
formats |= SND_PCM_FMT_A_LAW | SND_PCM_FMT_IMA_ADPCM;
#endif
if (formats & (SND_PCM_FMT_U8|SND_PCM_FMT_S8|
SND_PCM_FMT_U16_LE|SND_PCM_FMT_S16_LE))
formats |= SND_PCM_FMT_U8|SND_PCM_FMT_S8|
SND_PCM_FMT_U16_LE|SND_PCM_FMT_S16_LE;
if (formats & linfmts)
formats |= linfmts;
return formats;
}
static int preferred_formats[] = {
SND_PCM_SFMT_S16_LE,
SND_PCM_SFMT_S16_BE,
SND_PCM_SFMT_U16_LE,
SND_PCM_SFMT_U16_BE,
SND_PCM_SFMT_S24_LE,
SND_PCM_SFMT_S24_BE,
SND_PCM_SFMT_U24_LE,
SND_PCM_SFMT_U24_BE,
SND_PCM_SFMT_S32_LE,
SND_PCM_SFMT_S32_BE,
SND_PCM_SFMT_U32_LE,
SND_PCM_SFMT_U32_BE,
SND_PCM_SFMT_S8,
SND_PCM_SFMT_U8
};
int snd_pcm_plugin_hwparams(snd_pcm_channel_params_t *params,
snd_pcm_channel_info_t *hwinfo,
snd_pcm_channel_params_t *hwparams)
{
memcpy(hwparams, params, sizeof(*hwparams));
if ((hwinfo->formats & (1 << params->format.format)) == 0) {
if ((snd_pcm_plugin_formats(hwinfo->formats) & (1 << params->format.format)) == 0)
int format = params->format.format;
if ((snd_pcm_plugin_formats(hwinfo->formats) & (1 << format)) == 0)
return -EINVAL;
switch (params->format.format) {
case SND_PCM_SFMT_U8:
if (hwinfo->formats & SND_PCM_FMT_S8) {
hwparams->format.format = SND_PCM_SFMT_S8;
} else if (hwinfo->formats & SND_PCM_FMT_U16_LE) {
hwparams->format.format = SND_PCM_SFMT_U16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_S16_LE) {
hwparams->format.format = SND_PCM_SFMT_S16_LE;
} else {
return -EINVAL;
if (snd_pcm_format_linear(format)) {
int width = snd_pcm_format_width(format);
int unsignd = snd_pcm_format_unsigned(format);
int big = snd_pcm_format_big_endian(format);
int format1;
int wid, width1=width;
for (wid = 0; wid < 4; ++wid) {
int end, big1 = big;
for (end = 0; end < 2; ++end) {
int sgn, unsignd1 = unsignd;
for (sgn = 0; sgn < 2; ++sgn) {
format1 = snd_pcm_build_linear_format(width1, unsignd1, big1);
if (format1 >= 0 &&
hwinfo->formats & (1 << format1))
goto _found;
unsignd1 = !unsignd1;
}
big1 = !big1;
}
width1 += 8;
if (width1 > 32)
width = 8;
}
break;
case SND_PCM_SFMT_S8:
if (hwinfo->formats & SND_PCM_FMT_U8) {
hwparams->format.format = SND_PCM_SFMT_U8;
} else if (hwinfo->formats & SND_PCM_FMT_S16_LE) {
hwparams->format.format = SND_PCM_SFMT_S16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_U16_LE) {
hwparams->format.format = SND_PCM_SFMT_U16_LE;
} else {
return -EINVAL;
}
break;
case SND_PCM_SFMT_S16_LE:
if (hwinfo->formats & SND_PCM_FMT_U16_LE) {
hwparams->format.format = SND_PCM_SFMT_U16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_S8) {
hwparams->format.format = SND_PCM_SFMT_S8;
} else if (hwinfo->formats & SND_PCM_FMT_U8) {
hwparams->format.format = SND_PCM_SFMT_U8;
} else {
return -EINVAL;
}
break;
case SND_PCM_SFMT_U16_LE:
if (hwinfo->formats & SND_PCM_FMT_S16_LE) {
hwparams->format.format = SND_PCM_SFMT_S16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_U8) {
hwparams->format.format = SND_PCM_SFMT_U8;
} else if (hwinfo->formats & SND_PCM_FMT_S8) {
hwparams->format.format = SND_PCM_SFMT_S8;
} else {
return -EINVAL;
}
break;
case SND_PCM_SFMT_MU_LAW:
if (hwinfo->formats & SND_PCM_FMT_S16_LE) {
hwparams->format.format = SND_PCM_SFMT_S16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_U16_LE) {
hwparams->format.format = SND_PCM_SFMT_U16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_S8) {
hwparams->format.format = SND_PCM_SFMT_S8;
} else if (hwinfo->formats & SND_PCM_FMT_U8) {
hwparams->format.format = SND_PCM_SFMT_U8;
} else {
return -EINVAL;
}
break;
return -EINVAL;
_found:
hwparams->format.format = format1;
} else {
int i;
switch (format) {
case SND_PCM_SFMT_MU_LAW:
#ifndef __KERNEL__
case SND_PCM_SFMT_A_LAW:
if (hwinfo->formats & SND_PCM_FMT_S16_LE) {
hwparams->format.format = SND_PCM_SFMT_S16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_U16_LE) {
hwparams->format.format = SND_PCM_SFMT_U16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_S8) {
hwparams->format.format = SND_PCM_SFMT_S8;
} else if (hwinfo->formats & SND_PCM_FMT_U8) {
hwparams->format.format = SND_PCM_SFMT_U8;
} else {
return -EINVAL;
}
case SND_PCM_SFMT_IMA_ADPCM:
if (hwinfo->formats & SND_PCM_FMT_S16_LE) {
hwparams->format.format = SND_PCM_SFMT_S16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_U16_LE) {
hwparams->format.format = SND_PCM_SFMT_U16_LE;
} else if (hwinfo->formats & SND_PCM_FMT_S8) {
hwparams->format.format = SND_PCM_SFMT_S8;
} else if (hwinfo->formats & SND_PCM_FMT_U8) {
hwparams->format.format = SND_PCM_SFMT_U8;
} else {
return -EINVAL;
}
break;
case SND_PCM_SFMT_A_LAW:
case SND_PCM_SFMT_IMA_ADPCM:
#endif
default:
return -EINVAL;
for (i = 0; i < sizeof(preferred_formats) / sizeof(preferred_formats[0]); ++i) {
int format1 = preferred_formats[i];
if (hwinfo->formats & (1 << format1)) {
hwparams->format.format = format1;
break;
}
}
if (i == sizeof(preferred_formats)/sizeof(preferred_formats[0]))
return -EINVAL;
break;
default:
return -EINVAL;
}
}
}