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mirror of synced 2024-11-11 21:47:09 +01:00

Soundcard pick

This commit is contained in:
dkeruza 2024-03-01 09:37:56 -05:00
parent 15c4e0647a
commit 503948bfda
4 changed files with 80 additions and 1 deletions

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@ -1,7 +1,7 @@
CC=gcc -m32
CFLAGS = -g -O0 -fPIC -m32 -Wall -Werror -Wno-unused-variable -Wno-unused-function
LD = g++ -m32
LDFLAGS = -Wl,-z,defs -rdynamic -static-libstdc++ -static-libgcc -lc -ldl -lGL -lglut -lX11 -lm -lpthread -shared -nostdlib
LDFLAGS = -Wl,-z,defs -rdynamic -static-libstdc++ -static-libgcc -lc -ldl -lGL -lglut -lX11 -lm -lpthread -shared -nostdlib -lasound
BUILD = build

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@ -30,6 +30,15 @@
#include "patch.h"
#include "pcidata.h"
#include "input.h"
#include "soundcard.h"
#include "alsa/global.h"
#include "alsa/input.h"
#include "alsa/output.h"
#include "alsa/conf.h"
#include "alsa/pcm.h"
#include "alsa/control.h"
#include "alsa/error.h"
#define HOOK_FILE_NAME "/dev/zero"
@ -743,3 +752,9 @@ int unsetenv(const char *name)
return _unsetenv(name);
}
int snd_pcm_open(snd_pcm_t **pcmp, const char *name, snd_pcm_stream_t stream, int mode)
{
int (*_snd_pcm_open)(snd_pcm_t **pcmp, const char *name, snd_pcm_stream_t stream, int mode) = dlsym(RTLD_NEXT, "snd_pcm_open");
return _snd_pcm_open(pcmp, get_sndcard(), stream, mode);
}

63
src/lindbergh/soundcard.c Normal file
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@ -0,0 +1,63 @@
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <malloc.h>
#include "alsa/global.h"
#include "alsa/input.h"
#include "alsa/output.h"
#include "alsa/conf.h"
#include "alsa/pcm.h"
#include "alsa/control.h"
#include "alsa/error.h"
const char* get_sndcard()
{
int card = -1;
int err;
snd_ctl_t *handle;
snd_ctl_card_info_t *info;
static char hwdevice[15];
while (snd_card_next(&card) == 0 && card >= 0)
{
char cardname[32];
sprintf(cardname, "hw:%d", card);
if ((err = snd_ctl_open(&handle, cardname, 0)) < 0)
{
fprintf(stderr, "Cannot open control for card %d: %s\n", card, snd_strerror(err));
continue;
}
snd_ctl_card_info_alloca(&info);
if ((err = snd_ctl_card_info(handle, info)) < 0)
{
fprintf(stderr, "Cannot get card info for card %d: %s\n", card, snd_strerror(err));
snd_ctl_close(handle);
continue;
}
// List PCM devices
int dev = -1;
snd_pcm_info_t *pcm_info;
snd_pcm_info_alloca(&pcm_info);
while (snd_ctl_pcm_next_device(handle, &dev) == 0 && dev >= 0)
{
snd_pcm_info_set_device(pcm_info, dev);
snd_pcm_info_set_subdevice(pcm_info, 0);
snd_pcm_info_set_stream(pcm_info, SND_PCM_STREAM_PLAYBACK);
if (snd_ctl_pcm_info(handle, pcm_info) >= 0)
{
if(strstr(snd_pcm_info_get_name(pcm_info),"HDMI") == NULL)
{
snd_ctl_close(handle);
sprintf(hwdevice, "plughw:%d,0", card);
return hwdevice;
}
}
}
snd_ctl_close(handle);
}
return "plughw:0,0";
}

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@ -0,0 +1 @@
const char* get_sndcard();