diff options
Diffstat (limited to 'sound/synth/emux/emux_hwdep.c')
| -rw-r--r-- | sound/synth/emux/emux_hwdep.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/sound/synth/emux/emux_hwdep.c b/sound/synth/emux/emux_hwdep.c new file mode 100644 index 000000000..d9fcae071 --- /dev/null +++ b/sound/synth/emux/emux_hwdep.c @@ -0,0 +1,156 @@ +/* + * Interface for hwdep device + * + * Copyright (C) 2004 Takashi Iwai <tiwai@suse.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <sound/core.h> +#include <sound/hwdep.h> +#include <linux/uaccess.h> +#include <linux/nospec.h> +#include "emux_voice.h" + +#define TMP_CLIENT_ID 0x1001 + +/* + * load patch + */ +static int +snd_emux_hwdep_load_patch(struct snd_emux *emu, void __user *arg) +{ + int err; + struct soundfont_patch_info patch; + + if (copy_from_user(&patch, arg, sizeof(patch))) + return -EFAULT; + + if (patch.type >= SNDRV_SFNT_LOAD_INFO && + patch.type <= SNDRV_SFNT_PROBE_DATA) { + err = snd_soundfont_load(emu->sflist, arg, patch.len + sizeof(patch), TMP_CLIENT_ID); + if (err < 0) + return err; + } else { + if (emu->ops.load_fx) + return emu->ops.load_fx(emu, patch.type, patch.optarg, arg, patch.len + sizeof(patch)); + else + return -EINVAL; + } + return 0; +} + +/* + * set misc mode + */ +static int +snd_emux_hwdep_misc_mode(struct snd_emux *emu, void __user *arg) +{ + struct snd_emux_misc_mode info; + int i; + + if (copy_from_user(&info, arg, sizeof(info))) + return -EFAULT; + if (info.mode < 0 || info.mode >= EMUX_MD_END) + return -EINVAL; + info.mode = array_index_nospec(info.mode, EMUX_MD_END); + + if (info.port < 0) { + for (i = 0; i < emu->num_ports; i++) + emu->portptrs[i]->ctrls[info.mode] = info.value; + } else { + if (info.port < emu->num_ports) { + info.port = array_index_nospec(info.port, emu->num_ports); + emu->portptrs[info.port]->ctrls[info.mode] = info.value; + } + } + return 0; +} + + +/* + * ioctl + */ +static int +snd_emux_hwdep_ioctl(struct snd_hwdep * hw, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct snd_emux *emu = hw->private_data; + + switch (cmd) { + case SNDRV_EMUX_IOCTL_VERSION: + return put_user(SNDRV_EMUX_VERSION, (unsigned int __user *)arg); + case SNDRV_EMUX_IOCTL_LOAD_PATCH: + return snd_emux_hwdep_load_patch(emu, (void __user *)arg); + case SNDRV_EMUX_IOCTL_RESET_SAMPLES: + snd_soundfont_remove_samples(emu->sflist); + break; + case SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES: + snd_soundfont_remove_unlocked(emu->sflist); + break; + case SNDRV_EMUX_IOCTL_MEM_AVAIL: + if (emu->memhdr) { + int size = snd_util_mem_avail(emu->memhdr); + return put_user(size, (unsigned int __user *)arg); + } + break; + case SNDRV_EMUX_IOCTL_MISC_MODE: + return snd_emux_hwdep_misc_mode(emu, (void __user *)arg); + } + + return 0; +} + + +/* + * register hwdep device + */ + +int +snd_emux_init_hwdep(struct snd_emux *emu) +{ + struct snd_hwdep *hw; + int err; + + if ((err = snd_hwdep_new(emu->card, SNDRV_EMUX_HWDEP_NAME, emu->hwdep_idx, &hw)) < 0) + return err; + emu->hwdep = hw; + strcpy(hw->name, SNDRV_EMUX_HWDEP_NAME); + hw->iface = SNDRV_HWDEP_IFACE_EMUX_WAVETABLE; + hw->ops.ioctl = snd_emux_hwdep_ioctl; + /* The ioctl parameter types are compatible between 32- and + * 64-bit architectures, so use the same function. */ + hw->ops.ioctl_compat = snd_emux_hwdep_ioctl; + hw->exclusive = 1; + hw->private_data = emu; + if ((err = snd_card_register(emu->card)) < 0) + return err; + + return 0; +} + + +/* + * unregister + */ +void +snd_emux_delete_hwdep(struct snd_emux *emu) +{ + if (emu->hwdep) { + snd_device_free(emu->card, emu->hwdep); + emu->hwdep = NULL; + } +} |