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Qemu support for S32 and U32 alsa output, by Vassili Karpov.

Browse source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2427 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-02-17 22:19:29 +00:00
parent b93aebecb0
commit f941aa256f
9 changed files with 215 additions and 49 deletions
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112
audio/audio.c
View file

@ -80,7 +80,8 @@ static struct {
{
44100, /* freq */
2, /* nchannels */
AUD_FMT_S16 /* fmt */
AUD_FMT_S16, /* fmt */
AUDIO_HOST_ENDIANNESS
}
},
@ -91,7 +92,8 @@ static struct {
{
44100, /* freq */
2, /* nchannels */
AUD_FMT_S16 /* fmt */
AUD_FMT_S16, /* fmt */
AUDIO_HOST_ENDIANNESS
}
},
@ -166,6 +168,25 @@ int audio_bug (const char *funcname, int cond)
}
#endif
static inline int audio_bits_to_index (int bits)
{
switch (bits) {
case 8:
return 0;
case 16:
return 1;
case 32:
return 2;
default:
audio_bug ("bits_to_index", 1);
AUD_log (NULL, "invalid bits %d\n", bits);
return 0;
}
}
void *audio_calloc (const char *funcname, int nmemb, size_t size)
{
int cond;
@ -227,6 +248,12 @@ const char *audio_audfmt_to_string (audfmt_e fmt)
case AUD_FMT_S16:
return "S16";
case AUD_FMT_U32:
return "U32";
case AUD_FMT_S32:
return "S32";
}
dolog ("Bogus audfmt %d returning S16\n", fmt);
@ -243,6 +270,10 @@ audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval, int *defaultp)
*defaultp = 0;
return AUD_FMT_U16;
}
else if (!strcasecmp (s, "u32")) {
*defaultp = 0;
return AUD_FMT_U32;
}
else if (!strcasecmp (s, "s8")) {
*defaultp = 0;
return AUD_FMT_S8;
@ -251,6 +282,10 @@ audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval, int *defaultp)
*defaultp = 0;
return AUD_FMT_S16;
}
else if (!strcasecmp (s, "s32")) {
*defaultp = 0;
return AUD_FMT_S32;
}
else {
dolog ("Bogus audio format `%s' using %s\n",
s, audio_audfmt_to_string (defval));
@ -538,6 +573,8 @@ static int audio_validate_settings (audsettings_t *as)
case AUD_FMT_U8:
case AUD_FMT_S16:
case AUD_FMT_U16:
case AUD_FMT_S32:
case AUD_FMT_U32:
break;
default:
invalid = 1;
@ -563,6 +600,12 @@ static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
case AUD_FMT_U16:
bits = 16;
break;
case AUD_FMT_S32:
sign = 1;
case AUD_FMT_U32:
bits = 32;
break;
}
return info->freq == as->freq
&& info->nchannels == as->nchannels
@ -573,7 +616,7 @@ static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
{
int bits = 8, sign = 0;
int bits = 8, sign = 0, shift = 0;
switch (as->fmt) {
case AUD_FMT_S8:
@ -585,6 +628,14 @@ void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
sign = 1;
case AUD_FMT_U16:
bits = 16;
shift = 1;
break;
case AUD_FMT_S32:
sign = 1;
case AUD_FMT_U32:
bits = 32;
shift = 2;
break;
}
@ -592,7 +643,7 @@ void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
info->bits = bits;
info->sign = sign;
info->nchannels = as->nchannels;
info->shift = (as->nchannels == 2) + (bits == 16);
info->shift = (as->nchannels == 2) + shift;
info->align = (1 << info->shift) - 1;
info->bytes_per_second = info->freq << info->shift;
info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
@ -608,22 +659,49 @@ void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
memset (buf, 0x00, len << info->shift);
}
else {
if (info->bits == 8) {
switch (info->bits) {
case 8:
memset (buf, 0x80, len << info->shift);
}
else {
int i;
uint16_t *p = buf;
int shift = info->nchannels - 1;
short s = INT16_MAX;
break;
if (info->swap_endianness) {
s = bswap16 (s);
}
case 16:
{
int i;
uint16_t *p = buf;
int shift = info->nchannels - 1;
short s = INT16_MAX;
for (i = 0; i < len << shift; i++) {
p[i] = s;
if (info->swap_endianness) {
s = bswap16 (s);
}
for (i = 0; i < len << shift; i++) {
p[i] = s;
}
}
break;
case 32:
{
int i;
uint32_t *p = buf;
int shift = info->nchannels - 1;
int32_t s = INT32_MAX;
if (info->swap_endianness) {
s = bswap32 (s);
}
for (i = 0; i < len << shift; i++) {
p[i] = s;
}
}
break;
default:
AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
info->bits);
break;
}
}
}
@ -1811,7 +1889,7 @@ CaptureVoiceOut *AUD_add_capture (
[hw->info.nchannels == 2]
[hw->info.sign]
[hw->info.swap_endianness]
[hw->info.bits == 16];
[audio_bits_to_index (hw->info.bits)];
LIST_INSERT_HEAD (&s->cap_head, cap, entries);
LIST_INSERT_HEAD (&cap->cb_head, cb, entries);