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winealsa: Add support for alsa cards without a PCM mixer (only Line).

This commit is contained in:
Andy Norris 2011-03-05 16:03:55 -05:00 committed by Alexandre Julliard
parent fcfbb46d2e
commit 254b8f85b5
2 changed files with 82 additions and 65 deletions
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137
dlls/winealsa.drv/alsa.c
View File

@ -421,6 +421,8 @@ int ALSA_CheckSetVolume(snd_hctl_t *hctl, int *out_left, int *out_right,
snd_ctl_elem_info_t * eleminfop = NULL;
snd_ctl_elem_value_t * elemvaluep = NULL;
snd_ctl_elem_id_t * elemidp = NULL;
const char *names[] = {"PCM Playback Volume", "Line Playback Volume", NULL};
const char **name;
#define EXIT_ON_ERROR(f,txt,exitcode) do \
@ -447,81 +449,88 @@ int ALSA_CheckSetVolume(snd_hctl_t *hctl, int *out_left, int *out_right,
/* Setup and find an element id that exactly matches the characteristic we want
** FIXME: It is probably short sighted to hard code and fixate on PCM Playback Volume */
snd_ctl_elem_id_set_name(elemidp, "PCM Playback Volume");
snd_ctl_elem_id_set_interface(elemidp, SND_CTL_ELEM_IFACE_MIXER);
elem = snd_hctl_find_elem(hctl, elemidp);
if (elem)
for( name = names; *name; name++ )
{
/* Read and return volume information */
EXIT_ON_ERROR(snd_hctl_elem_info(elem, eleminfop), "snd_hctl_elem_info", MMSYSERR_NOTSUPPORTED);
value_count = snd_ctl_elem_info_get_count(eleminfop);
if (out_min || out_max || out_step)
{
if (!snd_ctl_elem_info_is_readable(eleminfop))
{
ERR("snd_ctl_elem_info_is_readable returned false; cannot return info\n");
rc = MMSYSERR_NOTSUPPORTED;
goto out;
}
snd_ctl_elem_id_set_name(elemidp, *name);
snd_ctl_elem_id_set_interface(elemidp, SND_CTL_ELEM_IFACE_MIXER);
elem = snd_hctl_find_elem(hctl, elemidp);
if (elem)
{
/* Read and return volume information */
EXIT_ON_ERROR(snd_hctl_elem_info(elem, eleminfop), "snd_hctl_elem_info", MMSYSERR_NOTSUPPORTED);
value_count = snd_ctl_elem_info_get_count(eleminfop);
if (out_min || out_max || out_step)
{
if (!snd_ctl_elem_info_is_readable(eleminfop))
{
ERR("snd_ctl_elem_info_is_readable returned false; cannot return info\n");
rc = MMSYSERR_NOTSUPPORTED;
goto out;
}
if (out_min)
*out_min = snd_ctl_elem_info_get_min(eleminfop);
if (out_min)
*out_min = snd_ctl_elem_info_get_min(eleminfop);
if (out_max)
*out_max = snd_ctl_elem_info_get_max(eleminfop);
if (out_max)
*out_max = snd_ctl_elem_info_get_max(eleminfop);
if (out_step)
*out_step = snd_ctl_elem_info_get_step(eleminfop);
}
if (out_step)
*out_step = snd_ctl_elem_info_get_step(eleminfop);
}
if (out_left || out_right)
{
EXIT_ON_ERROR(snd_hctl_elem_read(elem, elemvaluep), "snd_hctl_elem_read", MMSYSERR_NOTSUPPORTED);
if (out_left || out_right)
{
EXIT_ON_ERROR(snd_hctl_elem_read(elem, elemvaluep), "snd_hctl_elem_read", MMSYSERR_NOTSUPPORTED);
if (out_left)
*out_left = snd_ctl_elem_value_get_integer(elemvaluep, 0);
if (out_left)
*out_left = snd_ctl_elem_value_get_integer(elemvaluep, 0);
if (out_right)
{
if (value_count == 1)
*out_right = snd_ctl_elem_value_get_integer(elemvaluep, 0);
else if (value_count == 2)
*out_right = snd_ctl_elem_value_get_integer(elemvaluep, 1);
else
{
ERR("Unexpected value count %d from snd_ctl_elem_info_get_count while getting volume info\n", value_count);
rc = -1;
goto out;
}
}
}
if (out_right)
{
if (value_count == 1)
*out_right = snd_ctl_elem_value_get_integer(elemvaluep, 0);
else if (value_count == 2)
*out_right = snd_ctl_elem_value_get_integer(elemvaluep, 1);
else
{
ERR("Unexpected value count %d from snd_ctl_elem_info_get_count while getting volume info\n", value_count);
rc = -1;
goto out;
}
}
}
/* Set the volume */
if (new_left || new_right)
{
EXIT_ON_ERROR(snd_hctl_elem_read(elem, elemvaluep), "snd_hctl_elem_read", MMSYSERR_NOTSUPPORTED);
if (new_left)
snd_ctl_elem_value_set_integer(elemvaluep, 0, *new_left);
if (new_right)
{
if (value_count == 1)
snd_ctl_elem_value_set_integer(elemvaluep, 0, *new_right);
else if (value_count == 2)
snd_ctl_elem_value_set_integer(elemvaluep, 1, *new_right);
else
{
ERR("Unexpected value count %d from snd_ctl_elem_info_get_count while setting volume info\n", value_count);
rc = -1;
goto out;
}
}
/* Set the volume */
if (new_left || new_right)
{
EXIT_ON_ERROR(snd_hctl_elem_read(elem, elemvaluep), "snd_hctl_elem_read", MMSYSERR_NOTSUPPORTED);
if (new_left)
snd_ctl_elem_value_set_integer(elemvaluep, 0, *new_left);
if (new_right)
{
if (value_count == 1)
snd_ctl_elem_value_set_integer(elemvaluep, 0, *new_right);
else if (value_count == 2)
snd_ctl_elem_value_set_integer(elemvaluep, 1, *new_right);
else
{
ERR("Unexpected value count %d from snd_ctl_elem_info_get_count while setting volume info\n", value_count);
rc = -1;
goto out;
}
}
EXIT_ON_ERROR(snd_hctl_elem_write(elem, elemvaluep), "snd_hctl_elem_write", MMSYSERR_NOTSUPPORTED);
}
EXIT_ON_ERROR(snd_hctl_elem_write(elem, elemvaluep), "snd_hctl_elem_write", MMSYSERR_NOTSUPPORTED);
}
break;
}
}
else
if( !*name )
{
ERR("Could not find 'PCM Playback Volume' element\n");
ERR("Could not find '{PCM,Line} Playback Volume' element\n");
rc = MMSYSERR_NOTSUPPORTED;
}

10
dlls/winealsa.drv/mixer.c
View File

@ -435,7 +435,7 @@ static void ALSA_MixerInit(void)
char cardind[6], cardname[10];
snd_ctl_t *ctl;
snd_mixer_elem_t *elem, *mastelem = NULL, *headelem = NULL, *captelem = NULL, *pcmelem = NULL, *micelem = NULL;
snd_mixer_elem_t *elem, *mastelem = NULL, *headelem = NULL, *captelem = NULL, *pcmelem = NULL, *lineelem = NULL, *micelem = NULL;
memset(info, 0, snd_ctl_card_info_sizeof());
memset(&mixdev[mixnum], 0, sizeof(*mixdev));
@ -520,6 +520,8 @@ static void ALSA_MixerInit(void)
headelem = elem;
else if (!strcasecmp(snd_mixer_selem_get_name(elem), "PCM") && !pcmelem)
pcmelem = elem;
else if (!strcasecmp(snd_mixer_selem_get_name(elem), "Line") && !lineelem)
lineelem = elem;
++(mixdev[mixnum].chans);
}
}
@ -548,6 +550,12 @@ static void ALSA_MixerInit(void)
mastelem = pcmelem;
capcontrols -= !!snd_mixer_selem_has_capture_switch(mastelem);
}
else if (lineelem && !mastelem)
{
/* Use 'Line' as master device */
mastelem = lineelem;
capcontrols -= !!snd_mixer_selem_has_capture_switch(mastelem);
}
else if (!mastelem && !captelem && !micelem)
{
/* If there is nothing sensible that can act as 'Master' control, something is wrong */