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authorWinfried Ritsch <ritsch@users.sourceforge.net>2006-03-27 11:15:14 +0000
committerWinfried Ritsch <ritsch@users.sourceforge.net>2006-03-27 11:15:14 +0000
commiteb431ff9898a74b6a5f451373ffc390f4467f910 (patch)
tree28e6170a3028b65b0a2c16647ef3fe8ff8a27f8c /hdspm_mixer.c
This commit was generated by cvs2svn to compensate for changes in r4782,svn2git-root
which included commits to RCS files with non-trunk default branches. svn path=/trunk/externals/iem/hdspm_mixer/; revision=4783
Diffstat (limited to 'hdspm_mixer.c')
-rw-r--r--hdspm_mixer.c231
1 files changed, 231 insertions, 0 deletions
diff --git a/hdspm_mixer.c b/hdspm_mixer.c
new file mode 100644
index 0000000..4cc7039
--- /dev/null
+++ b/hdspm_mixer.c
@@ -0,0 +1,231 @@
+/* Very simple Mixer for RME DSP-MADI and maybe other hammerfall dsp
+ (C) 2003 IEM, Winfried Ritsch (ritsch at iem.at)
+ Institute of Electronic Music and Acoustics
+ GPL - see Licence.txt
+
+ Use it as library for other programs, or standalone commandline programm
+
+ eg.:compile as program: cc -o hdspmmixer -DMAIN -lm -lc -lasound hdsdpmmixer.c
+*/
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+#include <sys/ioctl.h>
+#include <alsa/asoundlib.h>
+
+/* #include <sound/hdsp.h> */
+
+#include "hdspm_mixer.h"
+
+/* #define QUIET (on cc commandline) */
+#ifndef VERBOSE
+ #define QUIET
+#endif
+
+static char card_name[HDSPMM_MAX_CARDS][HDSPMM_MAX_NAME_LEN];
+static int cardid = 0;
+
+int find_cards()
+{
+ int i;
+ char *name;
+ int card = HDSPMM_ERROR_NO_CARD;
+ int n = 0;
+
+
+#ifndef QUIET
+ printf("Searching mixer for hdspm ...\n");
+#endif
+
+ while (snd_card_next(&card) >= 0) {
+ if (card < 0) {
+ break;
+ } else {
+
+ snd_card_get_name(card, &name);
+
+#ifdef DEBUG
+ printf("Card %d : %s\n", card, name);
+#endif
+
+ if (strncmp(name, "HDSPM MADI", 9) == 0) {
+
+ snprintf(card_name[n], 6, "hw:%i", n);
+
+#ifndef QUIET
+ printf("HDSP MADI as card %d (%s) found !\n",n,card_name[n]);
+#endif
+ n++;
+ if(n >= HDSPMM_MAX_CARDS)
+ break;
+ }
+ }
+ }
+
+ if (!n)
+ return HDSPMM_ERROR_NO_CARD;
+
+ for (i = n; i < HDSPMM_MAX_CARDS; i++) {
+ card_name[i][0] = '\0';
+ }
+
+ return n;
+}
+
+int set_gain(int idx, int src, int dst, int val)
+{
+ int err;
+
+
+ snd_ctl_elem_id_t *id;
+ snd_ctl_elem_value_t *ctl;
+ snd_ctl_t *handle;
+
+ if(idx >= HDSPMM_MAX_CARDS || idx < 0)
+ return HDSPMM_ERROR_WRONG_IDX;
+
+ snd_ctl_elem_value_alloca(&ctl);
+ snd_ctl_elem_id_alloca(&id);
+ snd_ctl_elem_id_set_name(id, "Mixer");
+ snd_ctl_elem_id_set_numid(id, 0);
+ snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_HWDEP);
+ snd_ctl_elem_id_set_device(id, 0);
+ snd_ctl_elem_id_set_subdevice(id, 0);
+ snd_ctl_elem_id_set_index(id, 0);
+ snd_ctl_elem_value_set_id(ctl, id);
+
+ if ((err = snd_ctl_open(&handle, card_name[idx], SND_CTL_NONBLOCK)) < 0) {
+#ifndef QUIET
+ fprintf(stderr, "Alsa error: %s\n", snd_strerror(err));
+#endif
+ return HDSPMM_ERROR_ALSA_OPEN;
+ }
+
+ snd_ctl_elem_value_set_integer(ctl, 0, src);
+ snd_ctl_elem_value_set_integer(ctl, 1, dst);
+ snd_ctl_elem_value_set_integer(ctl, 2, val);
+
+ if ((err = snd_ctl_elem_write(handle, ctl)) < 0) {
+#ifndef QUIET
+ fprintf(stderr, "Alsa error: %s\n", snd_strerror(err));
+#endif
+ return HDSPMM_ERROR_ALSA_WRITE;
+ }
+
+ val = snd_ctl_elem_value_get_integer(ctl, 2);
+
+ snd_ctl_close(handle);
+ return val;
+}
+
+int get_gain(int idx, int src, int dst)
+{
+ int err;
+ int val = HDSPMM_ERROR_NO_CARD;
+
+ snd_ctl_elem_id_t *id;
+ snd_ctl_elem_value_t *ctl;
+ snd_ctl_t *handle;
+
+ if(idx >= HDSPMM_MAX_CARDS || idx < 0)
+ return HDSPMM_ERROR_WRONG_IDX;
+
+
+ snd_ctl_elem_value_alloca(&ctl);
+ snd_ctl_elem_id_alloca(&id);
+ snd_ctl_elem_id_set_name(id, "Mixer");
+ snd_ctl_elem_id_set_numid(id, 0);
+ snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_HWDEP);
+ snd_ctl_elem_id_set_device(id, 0);
+ snd_ctl_elem_id_set_subdevice(id, 0);
+ snd_ctl_elem_id_set_index(id, 0);
+ snd_ctl_elem_value_set_id(ctl, id);
+
+ if ((err = snd_ctl_open(&handle, card_name[cardid], SND_CTL_NONBLOCK)) < 0) {
+#ifndef QUIET
+ fprintf(stderr, "Alsa error: %s\n", snd_strerror(err));
+#endif
+ return HDSPMM_ERROR_ALSA_OPEN;
+ }
+
+ snd_ctl_elem_value_set_integer(ctl, 0, src);
+ snd_ctl_elem_value_set_integer(ctl, 1, dst);
+
+ if ((err = snd_ctl_elem_read(handle, ctl)) < 0) {
+#ifndef QUIET
+ fprintf(stderr, "Alsa error: %s\n", snd_strerror(err));
+#endif
+ return HDSPMM_ERROR_ALSA_READ;
+ }
+ val = snd_ctl_elem_value_get_integer(ctl, 2);
+
+ snd_ctl_close(handle);
+
+ return val;
+}
+
+#ifdef MAIN
+
+int main(int argc, char *argv[])
+{
+ int err = 0;
+
+ int src;
+ int dst;
+ int val;
+
+ /*
+ int i;
+
+ for(i=0; i < argc; i++)
+ printf(" %s ", argv[i]);
+ printf("\n");
+ */
+ /*
+ if((err =find_cards()) < 0)
+ return err;
+ */
+
+ if(argc < 4){
+ printf("\nusage %s <devnr> <src> <dst> [value] \n\n"
+ " devnr ... ALSA-Device eg. for hw:0 is 0 \n"
+ " src ... inputs 0-63 playback 64-127\n"
+ " dst ... out channel 0-63\n"
+ "\noptional if wanting to set a value:\n\n"
+ " value ... gain 0=0 (mute), 32768=1 (unitGain), 65535 = max\n\n",
+ argv[0]);
+
+ if(find_cards() < 0)
+ puts("No Hammerfall DSP MADI card found.");
+ puts("");
+ printf("Version %s, 2003 - IEM, winfried ritsch\n",HDSPMM_VERSION);
+ return -1;
+ }
+
+ cardid = atoi(argv[1]);
+ snprintf(card_name[cardid], 6, "hw:%i", cardid);
+
+ src = atoi(argv[2]);
+ dst = atoi(argv[3]);
+
+ if(argc == 4){
+
+ printf(" Get Mixer from %d to %d : %d \n",src,dst,
+ get_gain(cardid,src,dst));
+
+ return 0;
+ }
+
+ /* arg is 5 */
+ val = atoi(argv[4]);
+
+ if((err = set_gain(cardid,src,dst,val)) < 0 )
+ printf("Error: Could not set mixer from %d to %d gain %d:%s \n",
+ src,dst,val,snd_strerror(err));
+ else
+ printf("Set Mixer from %d to %d : %d \n",src,dst,val);
+
+
+ return err;
+}
+#endif