#include <sound/opl3.h>
#include <sound/asound_fm.h>
+#if defined(CONFIG_SND_SEQUENCER) || defined(CONFIG_SND_SEQUENCER_MODULE)
+#define OPL3_SUPPORT_SYNTH
+#endif
+
/*
* There is 18 possible 2 OP voices
* (9 in the left and 9 in the right).
*/
int snd_opl3_open(struct snd_hwdep * hw, struct file *file)
{
- struct snd_opl3 *opl3 = hw->private_data;
-
- mutex_lock(&opl3->access_mutex);
- if (opl3->used) {
- mutex_unlock(&opl3->access_mutex);
- return -EAGAIN;
- }
- opl3->used++;
- mutex_unlock(&opl3->access_mutex);
-
return 0;
}
#endif
return snd_opl3_set_connection(opl3, (int) arg);
+#ifdef OPL3_SUPPORT_SYNTH
+ case SNDRV_DM_FM_IOCTL_CLEAR_PATCHES:
+ snd_opl3_clear_patches(opl3);
+ return 0;
+#endif
+
#ifdef CONFIG_SND_DEBUG
default:
snd_printk("unknown IOCTL: 0x%x\n", cmd);
struct snd_opl3 *opl3 = hw->private_data;
snd_opl3_reset(opl3);
- mutex_lock(&opl3->access_mutex);
- opl3->used--;
- mutex_unlock(&opl3->access_mutex);
+ return 0;
+}
+
+#ifdef OPL3_SUPPORT_SYNTH
+/*
+ * write the device - load patches
+ */
+long snd_opl3_write(struct snd_hwdep *hw, const char __user *buf, long count,
+ loff_t *offset)
+{
+ struct snd_opl3 *opl3 = hw->private_data;
+ long result = 0;
+ int err = 0;
+ struct sbi_patch inst;
+
+ while (count >= sizeof(inst)) {
+ unsigned char type;
+ if (copy_from_user(&inst, buf, sizeof(inst)))
+ return -EFAULT;
+ if (!memcmp(inst.key, FM_KEY_SBI, 4) ||
+ !memcmp(inst.key, FM_KEY_2OP, 4))
+ type = FM_PATCH_OPL2;
+ else if (!memcmp(inst.key, FM_KEY_4OP, 4))
+ type = FM_PATCH_OPL3;
+ else /* invalid type */
+ break;
+ err = snd_opl3_load_patch(opl3, inst.prog, inst.bank, type,
+ inst.name, inst.extension,
+ inst.data);
+ if (err < 0)
+ break;
+ result += sizeof(inst);
+ count -= sizeof(inst);
+ }
+ return result > 0 ? result : err;
+}
+
+
+/*
+ * Patch management
+ */
+
+/* offsets for SBI params */
+#define AM_VIB 0
+#define KSL_LEVEL 2
+#define ATTACK_DECAY 4
+#define SUSTAIN_RELEASE 6
+#define WAVE_SELECT 8
+
+/* offset for SBI instrument */
+#define CONNECTION 10
+#define OFFSET_4OP 11
+
+/*
+ * load a patch, obviously.
+ *
+ * loaded on the given program and bank numbers with the given type
+ * (FM_PATCH_OPLx).
+ * data is the pointer of SBI record _without_ header (key and name).
+ * name is the name string of the patch.
+ * ext is the extension data of 7 bytes long (stored in name of SBI
+ * data up to offset 25), or NULL to skip.
+ * return 0 if successful or a negative error code.
+ */
+int snd_opl3_load_patch(struct snd_opl3 *opl3,
+ int prog, int bank, int type,
+ const char *name,
+ const unsigned char *ext,
+ const unsigned char *data)
+{
+ struct fm_patch *patch;
+ int i;
+
+ patch = snd_opl3_find_patch(opl3, prog, bank, 1);
+ if (!patch)
+ return -ENOMEM;
+
+ patch->type = type;
+
+ for (i = 0; i < 2; i++) {
+ patch->inst.op[i].am_vib = data[AM_VIB + i];
+ patch->inst.op[i].ksl_level = data[KSL_LEVEL + i];
+ patch->inst.op[i].attack_decay = data[ATTACK_DECAY + i];
+ patch->inst.op[i].sustain_release = data[SUSTAIN_RELEASE + i];
+ patch->inst.op[i].wave_select = data[WAVE_SELECT + i];
+ }
+ patch->inst.feedback_connection[0] = data[CONNECTION];
+
+ if (type == FM_PATCH_OPL3) {
+ for (i = 0; i < 2; i++) {
+ patch->inst.op[i+2].am_vib =
+ data[OFFSET_4OP + AM_VIB + i];
+ patch->inst.op[i+2].ksl_level =
+ data[OFFSET_4OP + KSL_LEVEL + i];
+ patch->inst.op[i+2].attack_decay =
+ data[OFFSET_4OP + ATTACK_DECAY + i];
+ patch->inst.op[i+2].sustain_release =
+ data[OFFSET_4OP + SUSTAIN_RELEASE + i];
+ patch->inst.op[i+2].wave_select =
+ data[OFFSET_4OP + WAVE_SELECT + i];
+ }
+ patch->inst.feedback_connection[1] =
+ data[OFFSET_4OP + CONNECTION];
+ }
+
+ if (ext) {
+ patch->inst.echo_delay = ext[0];
+ patch->inst.echo_atten = ext[1];
+ patch->inst.chorus_spread = ext[2];
+ patch->inst.trnsps = ext[3];
+ patch->inst.fix_dur = ext[4];
+ patch->inst.modes = ext[5];
+ patch->inst.fix_key = ext[6];
+ }
+
+ if (name)
+ strlcpy(patch->name, name, sizeof(patch->name));
return 0;
}
+EXPORT_SYMBOL(snd_opl3_load_patch);
+
+/*
+ * find a patch with the given program and bank numbers, returns its pointer
+ * if no matching patch is found and create_patch is set, it creates a
+ * new patch object.
+ */
+struct fm_patch *snd_opl3_find_patch(struct snd_opl3 *opl3, int prog, int bank,
+ int create_patch)
+{
+ /* pretty dumb hash key */
+ unsigned int key = (prog + bank) % OPL3_PATCH_HASH_SIZE;
+ struct fm_patch *patch;
+
+ for (patch = opl3->patch_table[key]; patch; patch = patch->next) {
+ if (patch->prog == prog && patch->bank == bank)
+ return patch;
+ }
+ if (!create_patch)
+ return NULL;
+
+ patch = kzalloc(sizeof(*patch), GFP_KERNEL);
+ if (!patch)
+ return NULL;
+ patch->prog = prog;
+ patch->bank = bank;
+ patch->next = opl3->patch_table[key];
+ opl3->patch_table[key] = patch;
+ return patch;
+}
+EXPORT_SYMBOL(snd_opl3_find_patch);
+
+/*
+ * Clear all patches of the given OPL3 instance
+ */
+void snd_opl3_clear_patches(struct snd_opl3 *opl3)
+{
+ int i;
+ for (i = 0; i < OPL3_PATCH_HASH_SIZE; i++) {
+ struct fm_patch *patch, *next;
+ for (patch = opl3->patch_table[i]; patch; patch = next) {
+ next = patch->next;
+ kfree(patch);
+ }
+ }
+ memset(opl3->patch_table, 0, sizeof(opl3->patch_table));
+}
+#endif /* OPL3_SUPPORT_SYNTH */
/* ------------------------------ */
projects / linux-flexiantxendom0-3.2.10.git / blobdiff