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moved silence byte function

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This commit is contained in:
Abramo Bagnara 2000-03-22 16:12:59 +00:00
parent 54d348c4d7
commit afbaf0fde9
1 changed files with 34 additions and 0 deletions
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34
src/pcm/pcm_misc.c
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@ -228,6 +228,40 @@ const char *snd_pcm_get_format_name(int format)
return formats[format];
}
unsigned char snd_pcm_format_silence(int format)
{
switch (format) {
case SND_PCM_SFMT_IMA_ADPCM: /* special case */
case SND_PCM_SFMT_MPEG:
case SND_PCM_SFMT_GSM:
case SND_PCM_SFMT_MU_LAW:
case SND_PCM_SFMT_A_LAW:
return 0;
case SND_PCM_SFMT_U8:
case SND_PCM_SFMT_U16_LE:
case SND_PCM_SFMT_U16_BE:
case SND_PCM_SFMT_U24_LE:
case SND_PCM_SFMT_U24_BE:
case SND_PCM_SFMT_U32_LE:
case SND_PCM_SFMT_U32_BE:
return 0x80;
case SND_PCM_SFMT_S8:
case SND_PCM_SFMT_S16_LE:
case SND_PCM_SFMT_S16_BE:
case SND_PCM_SFMT_S24_LE:
case SND_PCM_SFMT_S24_BE:
case SND_PCM_SFMT_S32_LE:
case SND_PCM_SFMT_S32_BE:
return 0;
case SND_PCM_SFMT_FLOAT:
case SND_PCM_SFMT_FLOAT64:
case SND_PCM_SFMT_IEC958_SUBFRAME_LE:
case SND_PCM_SFMT_IEC958_SUBFRAME_BE:
return 0;
}
return 0;
}
static int linear_formats[4*2*2] = {
SND_PCM_SFMT_S8,
SND_PCM_SFMT_U8,