| /* |
| * Soundfont generic routines. |
| * It is intended that these should be used by any driver that is willing |
| * to accept soundfont patches. |
| * |
| * Copyright (C) 1999 Steve Ratcliffe |
| * Copyright (c) 1999-2000 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 |
| */ |
| /* |
| * Deal with reading in of a soundfont. Code follows the OSS way |
| * of doing things so that the old sfxload utility can be used. |
| * Everything may change when there is an alsa way of doing things. |
| */ |
| #include <sound/driver.h> |
| #include <asm/uaccess.h> |
| #include <linux/slab.h> |
| #include <sound/core.h> |
| #include <sound/soundfont.h> |
| #include <sound/seq_oss_legacy.h> |
| |
| /* Prototypes for static functions */ |
| |
| static int open_patch(struct snd_sf_list *sflist, const char __user *data, |
| int count, int client); |
| static struct snd_soundfont *newsf(struct snd_sf_list *sflist, int type, char *name); |
| static int is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name); |
| static int close_patch(struct snd_sf_list *sflist); |
| static int probe_data(struct snd_sf_list *sflist, int sample_id); |
| static void set_zone_counter(struct snd_sf_list *sflist, |
| struct snd_soundfont *sf, struct snd_sf_zone *zp); |
| static struct snd_sf_zone *sf_zone_new(struct snd_sf_list *sflist, |
| struct snd_soundfont *sf); |
| static void set_sample_counter(struct snd_sf_list *sflist, |
| struct snd_soundfont *sf, struct snd_sf_sample *sp); |
| static struct snd_sf_sample *sf_sample_new(struct snd_sf_list *sflist, |
| struct snd_soundfont *sf); |
| static void sf_sample_delete(struct snd_sf_list *sflist, |
| struct snd_soundfont *sf, struct snd_sf_sample *sp); |
| static int load_map(struct snd_sf_list *sflist, const void __user *data, int count); |
| static int load_info(struct snd_sf_list *sflist, const void __user *data, long count); |
| static int remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
| int bank, int instr); |
| static void init_voice_info(struct soundfont_voice_info *avp); |
| static void init_voice_parm(struct soundfont_voice_parm *pp); |
| static struct snd_sf_sample *set_sample(struct snd_soundfont *sf, |
| struct soundfont_voice_info *avp); |
| static struct snd_sf_sample *find_sample(struct snd_soundfont *sf, int sample_id); |
| static int load_data(struct snd_sf_list *sflist, const void __user *data, long count); |
| static void rebuild_presets(struct snd_sf_list *sflist); |
| static void add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur); |
| static void delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp); |
| static struct snd_sf_zone *search_first_zone(struct snd_sf_list *sflist, |
| int bank, int preset, int key); |
| static int search_zones(struct snd_sf_list *sflist, int *notep, int vel, |
| int preset, int bank, struct snd_sf_zone **table, |
| int max_layers, int level); |
| static int get_index(int bank, int instr, int key); |
| static void snd_sf_init(struct snd_sf_list *sflist); |
| static void snd_sf_clear(struct snd_sf_list *sflist); |
| |
| /* |
| * lock access to sflist |
| */ |
| static void |
| lock_preset(struct snd_sf_list *sflist) |
| { |
| unsigned long flags; |
| mutex_lock(&sflist->presets_mutex); |
| spin_lock_irqsave(&sflist->lock, flags); |
| sflist->presets_locked = 1; |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| } |
| |
| |
| /* |
| * remove lock |
| */ |
| static void |
| unlock_preset(struct snd_sf_list *sflist) |
| { |
| unsigned long flags; |
| spin_lock_irqsave(&sflist->lock, flags); |
| sflist->presets_locked = 0; |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| mutex_unlock(&sflist->presets_mutex); |
| } |
| |
| |
| /* |
| * close the patch if the patch was opened by this client. |
| */ |
| int |
| snd_soundfont_close_check(struct snd_sf_list *sflist, int client) |
| { |
| unsigned long flags; |
| spin_lock_irqsave(&sflist->lock, flags); |
| if (sflist->open_client == client) { |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| return close_patch(sflist); |
| } |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| return 0; |
| } |
| |
| |
| /* |
| * Deal with a soundfont patch. Any driver could use these routines |
| * although it was designed for the AWE64. |
| * |
| * The sample_write and callargs pararameters allow a callback into |
| * the actual driver to write sample data to the board or whatever |
| * it wants to do with it. |
| */ |
| int |
| snd_soundfont_load(struct snd_sf_list *sflist, const void __user *data, |
| long count, int client) |
| { |
| struct soundfont_patch_info patch; |
| unsigned long flags; |
| int rc; |
| |
| if (count < (long)sizeof(patch)) { |
| snd_printk("patch record too small %ld\n", count); |
| return -EINVAL; |
| } |
| if (copy_from_user(&patch, data, sizeof(patch))) |
| return -EFAULT; |
| |
| count -= sizeof(patch); |
| data += sizeof(patch); |
| |
| if (patch.key != SNDRV_OSS_SOUNDFONT_PATCH) { |
| snd_printk("'The wrong kind of patch' %x\n", patch.key); |
| return -EINVAL; |
| } |
| if (count < patch.len) { |
| snd_printk("Patch too short %ld, need %d\n", count, patch.len); |
| return -EINVAL; |
| } |
| if (patch.len < 0) { |
| snd_printk("poor length %d\n", patch.len); |
| return -EINVAL; |
| } |
| |
| if (patch.type == SNDRV_SFNT_OPEN_PATCH) { |
| /* grab sflist to open */ |
| lock_preset(sflist); |
| rc = open_patch(sflist, data, count, client); |
| unlock_preset(sflist); |
| return rc; |
| } |
| |
| /* check if other client already opened patch */ |
| spin_lock_irqsave(&sflist->lock, flags); |
| if (sflist->open_client != client) { |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| return -EBUSY; |
| } |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| |
| lock_preset(sflist); |
| rc = -EINVAL; |
| switch (patch.type) { |
| case SNDRV_SFNT_LOAD_INFO: |
| rc = load_info(sflist, data, count); |
| break; |
| case SNDRV_SFNT_LOAD_DATA: |
| rc = load_data(sflist, data, count); |
| break; |
| case SNDRV_SFNT_CLOSE_PATCH: |
| rc = close_patch(sflist); |
| break; |
| case SNDRV_SFNT_REPLACE_DATA: |
| /*rc = replace_data(&patch, data, count);*/ |
| break; |
| case SNDRV_SFNT_MAP_PRESET: |
| rc = load_map(sflist, data, count); |
| break; |
| case SNDRV_SFNT_PROBE_DATA: |
| rc = probe_data(sflist, patch.optarg); |
| break; |
| case SNDRV_SFNT_REMOVE_INFO: |
| /* patch must be opened */ |
| if (sflist->currsf) { |
| snd_printk("soundfont: remove_info: patch not opened\n"); |
| rc = -EINVAL; |
| } else { |
| int bank, instr; |
| bank = ((unsigned short)patch.optarg >> 8) & 0xff; |
| instr = (unsigned short)patch.optarg & 0xff; |
| if (! remove_info(sflist, sflist->currsf, bank, instr)) |
| rc = -EINVAL; |
| else |
| rc = 0; |
| } |
| break; |
| } |
| unlock_preset(sflist); |
| |
| return rc; |
| } |
| |
| |
| /* check if specified type is special font (GUS or preset-alias) */ |
| static inline int |
| is_special_type(int type) |
| { |
| type &= 0x0f; |
| return (type == SNDRV_SFNT_PAT_TYPE_GUS || |
| type == SNDRV_SFNT_PAT_TYPE_MAP); |
| } |
| |
| |
| /* open patch; create sf list */ |
| static int |
| open_patch(struct snd_sf_list *sflist, const char __user *data, |
| int count, int client) |
| { |
| struct soundfont_open_parm parm; |
| struct snd_soundfont *sf; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sflist->lock, flags); |
| if (sflist->open_client >= 0 || sflist->currsf) { |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| return -EBUSY; |
| } |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| |
| if (copy_from_user(&parm, data, sizeof(parm))) |
| return -EFAULT; |
| |
| if (is_special_type(parm.type)) { |
| parm.type |= SNDRV_SFNT_PAT_SHARED; |
| sf = newsf(sflist, parm.type, NULL); |
| } else |
| sf = newsf(sflist, parm.type, parm.name); |
| if (sf == NULL) { |
| return -ENOMEM; |
| } |
| |
| spin_lock_irqsave(&sflist->lock, flags); |
| sflist->open_client = client; |
| sflist->currsf = sf; |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| |
| return 0; |
| } |
| |
| /* |
| * Allocate a new soundfont structure. |
| */ |
| static struct snd_soundfont * |
| newsf(struct snd_sf_list *sflist, int type, char *name) |
| { |
| struct snd_soundfont *sf; |
| |
| /* check the shared fonts */ |
| if (type & SNDRV_SFNT_PAT_SHARED) { |
| for (sf = sflist->fonts; sf; sf = sf->next) { |
| if (is_identical_font(sf, type, name)) { |
| return sf; |
| } |
| } |
| } |
| |
| /* not found -- create a new one */ |
| sf = kzalloc(sizeof(*sf), GFP_KERNEL); |
| if (sf == NULL) |
| return NULL; |
| sf->id = sflist->fonts_size; |
| sflist->fonts_size++; |
| |
| /* prepend this record */ |
| sf->next = sflist->fonts; |
| sflist->fonts = sf; |
| |
| sf->type = type; |
| sf->zones = NULL; |
| sf->samples = NULL; |
| if (name) |
| memcpy(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN); |
| |
| return sf; |
| } |
| |
| /* check if the given name matches to the existing list */ |
| static int |
| is_identical_font(struct snd_soundfont *sf, int type, unsigned char *name) |
| { |
| return ((sf->type & SNDRV_SFNT_PAT_SHARED) && |
| (sf->type & 0x0f) == (type & 0x0f) && |
| (name == NULL || |
| memcmp(sf->name, name, SNDRV_SFNT_PATCH_NAME_LEN) == 0)); |
| } |
| |
| /* |
| * Close the current patch. |
| */ |
| static int |
| close_patch(struct snd_sf_list *sflist) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sflist->lock, flags); |
| sflist->currsf = NULL; |
| sflist->open_client = -1; |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| |
| rebuild_presets(sflist); |
| |
| return 0; |
| |
| } |
| |
| /* probe sample in the current list -- nothing to be loaded */ |
| static int |
| probe_data(struct snd_sf_list *sflist, int sample_id) |
| { |
| /* patch must be opened */ |
| if (sflist->currsf) { |
| /* search the specified sample by optarg */ |
| if (find_sample(sflist->currsf, sample_id)) |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| /* |
| * increment zone counter |
| */ |
| static void |
| set_zone_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
| struct snd_sf_zone *zp) |
| { |
| zp->counter = sflist->zone_counter++; |
| if (sf->type & SNDRV_SFNT_PAT_LOCKED) |
| sflist->zone_locked = sflist->zone_counter; |
| } |
| |
| /* |
| * allocate a new zone record |
| */ |
| static struct snd_sf_zone * |
| sf_zone_new(struct snd_sf_list *sflist, struct snd_soundfont *sf) |
| { |
| struct snd_sf_zone *zp; |
| |
| if ((zp = kzalloc(sizeof(*zp), GFP_KERNEL)) == NULL) |
| return NULL; |
| zp->next = sf->zones; |
| sf->zones = zp; |
| |
| init_voice_info(&zp->v); |
| |
| set_zone_counter(sflist, sf, zp); |
| return zp; |
| } |
| |
| |
| /* |
| * increment sample couter |
| */ |
| static void |
| set_sample_counter(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
| struct snd_sf_sample *sp) |
| { |
| sp->counter = sflist->sample_counter++; |
| if (sf->type & SNDRV_SFNT_PAT_LOCKED) |
| sflist->sample_locked = sflist->sample_counter; |
| } |
| |
| /* |
| * allocate a new sample list record |
| */ |
| static struct snd_sf_sample * |
| sf_sample_new(struct snd_sf_list *sflist, struct snd_soundfont *sf) |
| { |
| struct snd_sf_sample *sp; |
| |
| if ((sp = kzalloc(sizeof(*sp), GFP_KERNEL)) == NULL) |
| return NULL; |
| |
| sp->next = sf->samples; |
| sf->samples = sp; |
| |
| set_sample_counter(sflist, sf, sp); |
| return sp; |
| } |
| |
| /* |
| * delete sample list -- this is an exceptional job. |
| * only the last allocated sample can be deleted. |
| */ |
| static void |
| sf_sample_delete(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
| struct snd_sf_sample *sp) |
| { |
| /* only last sample is accepted */ |
| if (sp == sf->samples) { |
| sf->samples = sp->next; |
| kfree(sp); |
| } |
| } |
| |
| |
| /* load voice map */ |
| static int |
| load_map(struct snd_sf_list *sflist, const void __user *data, int count) |
| { |
| struct snd_sf_zone *zp, *prevp; |
| struct snd_soundfont *sf; |
| struct soundfont_voice_map map; |
| |
| /* get the link info */ |
| if (count < (int)sizeof(map)) |
| return -EINVAL; |
| if (copy_from_user(&map, data, sizeof(map))) |
| return -EFAULT; |
| |
| if (map.map_instr < 0 || map.map_instr >= SF_MAX_INSTRUMENTS) |
| return -EINVAL; |
| |
| sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_MAP|SNDRV_SFNT_PAT_SHARED, NULL); |
| if (sf == NULL) |
| return -ENOMEM; |
| |
| prevp = NULL; |
| for (zp = sf->zones; zp; prevp = zp, zp = zp->next) { |
| if (zp->mapped && |
| zp->instr == map.map_instr && |
| zp->bank == map.map_bank && |
| zp->v.low == map.map_key && |
| zp->v.start == map.src_instr && |
| zp->v.end == map.src_bank && |
| zp->v.fixkey == map.src_key) { |
| /* the same mapping is already present */ |
| /* relink this record to the link head */ |
| if (prevp) { |
| prevp->next = zp->next; |
| zp->next = sf->zones; |
| sf->zones = zp; |
| } |
| /* update the counter */ |
| set_zone_counter(sflist, sf, zp); |
| return 0; |
| } |
| } |
| |
| /* create a new zone */ |
| if ((zp = sf_zone_new(sflist, sf)) == NULL) |
| return -ENOMEM; |
| |
| zp->bank = map.map_bank; |
| zp->instr = map.map_instr; |
| zp->mapped = 1; |
| if (map.map_key >= 0) { |
| zp->v.low = map.map_key; |
| zp->v.high = map.map_key; |
| } |
| zp->v.start = map.src_instr; |
| zp->v.end = map.src_bank; |
| zp->v.fixkey = map.src_key; |
| zp->v.sf_id = sf->id; |
| |
| add_preset(sflist, zp); |
| |
| return 0; |
| } |
| |
| |
| /* remove the present instrument layers */ |
| static int |
| remove_info(struct snd_sf_list *sflist, struct snd_soundfont *sf, |
| int bank, int instr) |
| { |
| struct snd_sf_zone *prev, *next, *p; |
| int removed = 0; |
| |
| prev = NULL; |
| for (p = sf->zones; p; p = next) { |
| next = p->next; |
| if (! p->mapped && |
| p->bank == bank && p->instr == instr) { |
| /* remove this layer */ |
| if (prev) |
| prev->next = next; |
| else |
| sf->zones = next; |
| removed++; |
| kfree(p); |
| } else |
| prev = p; |
| } |
| if (removed) |
| rebuild_presets(sflist); |
| return removed; |
| } |
| |
| |
| /* |
| * Read an info record from the user buffer and save it on the current |
| * open soundfont. |
| */ |
| static int |
| load_info(struct snd_sf_list *sflist, const void __user *data, long count) |
| { |
| struct snd_soundfont *sf; |
| struct snd_sf_zone *zone; |
| struct soundfont_voice_rec_hdr hdr; |
| int i; |
| |
| /* patch must be opened */ |
| if ((sf = sflist->currsf) == NULL) |
| return -EINVAL; |
| |
| if (is_special_type(sf->type)) |
| return -EINVAL; |
| |
| if (count < (long)sizeof(hdr)) { |
| printk("Soundfont error: invalid patch zone length\n"); |
| return -EINVAL; |
| } |
| if (copy_from_user((char*)&hdr, data, sizeof(hdr))) |
| return -EFAULT; |
| |
| data += sizeof(hdr); |
| count -= sizeof(hdr); |
| |
| if (hdr.nvoices <= 0 || hdr.nvoices >= 100) { |
| printk("Soundfont error: Illegal voice number %d\n", hdr.nvoices); |
| return -EINVAL; |
| } |
| |
| if (count < (long)sizeof(struct soundfont_voice_info) * hdr.nvoices) { |
| printk("Soundfont Error: patch length(%ld) is smaller than nvoices(%d)\n", |
| count, hdr.nvoices); |
| return -EINVAL; |
| } |
| |
| switch (hdr.write_mode) { |
| case SNDRV_SFNT_WR_EXCLUSIVE: |
| /* exclusive mode - if the instrument already exists, |
| return error */ |
| for (zone = sf->zones; zone; zone = zone->next) { |
| if (!zone->mapped && |
| zone->bank == hdr.bank && |
| zone->instr == hdr.instr) |
| return -EINVAL; |
| } |
| break; |
| case SNDRV_SFNT_WR_REPLACE: |
| /* replace mode - remove the instrument if it already exists */ |
| remove_info(sflist, sf, hdr.bank, hdr.instr); |
| break; |
| } |
| |
| for (i = 0; i < hdr.nvoices; i++) { |
| struct snd_sf_zone tmpzone; |
| |
| /* copy awe_voice_info parameters */ |
| if (copy_from_user(&tmpzone.v, data, sizeof(tmpzone.v))) { |
| return -EFAULT; |
| } |
| |
| data += sizeof(tmpzone.v); |
| count -= sizeof(tmpzone.v); |
| |
| tmpzone.bank = hdr.bank; |
| tmpzone.instr = hdr.instr; |
| tmpzone.mapped = 0; |
| tmpzone.v.sf_id = sf->id; |
| if (tmpzone.v.mode & SNDRV_SFNT_MODE_INIT_PARM) |
| init_voice_parm(&tmpzone.v.parm); |
| |
| /* create a new zone */ |
| if ((zone = sf_zone_new(sflist, sf)) == NULL) { |
| return -ENOMEM; |
| } |
| |
| /* copy the temporary data */ |
| zone->bank = tmpzone.bank; |
| zone->instr = tmpzone.instr; |
| zone->v = tmpzone.v; |
| |
| /* look up the sample */ |
| zone->sample = set_sample(sf, &zone->v); |
| } |
| |
| return 0; |
| } |
| |
| |
| /* initialize voice_info record */ |
| static void |
| init_voice_info(struct soundfont_voice_info *avp) |
| { |
| memset(avp, 0, sizeof(*avp)); |
| |
| avp->root = 60; |
| avp->high = 127; |
| avp->velhigh = 127; |
| avp->fixkey = -1; |
| avp->fixvel = -1; |
| avp->fixpan = -1; |
| avp->pan = -1; |
| avp->amplitude = 127; |
| avp->scaleTuning = 100; |
| |
| init_voice_parm(&avp->parm); |
| } |
| |
| /* initialize voice_parm record: |
| * Env1/2: delay=0, attack=0, hold=0, sustain=0, decay=0, release=0. |
| * Vibrato and Tremolo effects are zero. |
| * Cutoff is maximum. |
| * Chorus and Reverb effects are zero. |
| */ |
| static void |
| init_voice_parm(struct soundfont_voice_parm *pp) |
| { |
| memset(pp, 0, sizeof(*pp)); |
| |
| pp->moddelay = 0x8000; |
| pp->modatkhld = 0x7f7f; |
| pp->moddcysus = 0x7f7f; |
| pp->modrelease = 0x807f; |
| |
| pp->voldelay = 0x8000; |
| pp->volatkhld = 0x7f7f; |
| pp->voldcysus = 0x7f7f; |
| pp->volrelease = 0x807f; |
| |
| pp->lfo1delay = 0x8000; |
| pp->lfo2delay = 0x8000; |
| |
| pp->cutoff = 0xff; |
| } |
| |
| /* search the specified sample */ |
| static struct snd_sf_sample * |
| set_sample(struct snd_soundfont *sf, struct soundfont_voice_info *avp) |
| { |
| struct snd_sf_sample *sample; |
| |
| sample = find_sample(sf, avp->sample); |
| if (sample == NULL) |
| return NULL; |
| |
| /* add in the actual sample offsets: |
| * The voice_info addresses define only the relative offset |
| * from sample pointers. Here we calculate the actual DRAM |
| * offset from sample pointers. |
| */ |
| avp->start += sample->v.start; |
| avp->end += sample->v.end; |
| avp->loopstart += sample->v.loopstart; |
| avp->loopend += sample->v.loopend; |
| |
| /* copy mode flags */ |
| avp->sample_mode = sample->v.mode_flags; |
| |
| return sample; |
| } |
| |
| /* find the sample pointer with the given id in the soundfont */ |
| static struct snd_sf_sample * |
| find_sample(struct snd_soundfont *sf, int sample_id) |
| { |
| struct snd_sf_sample *p; |
| |
| if (sf == NULL) |
| return NULL; |
| |
| for (p = sf->samples; p; p = p->next) { |
| if (p->v.sample == sample_id) |
| return p; |
| } |
| return NULL; |
| } |
| |
| |
| /* |
| * Load sample information, this can include data to be loaded onto |
| * the soundcard. It can also just be a pointer into soundcard ROM. |
| * If there is data it will be written to the soundcard via the callback |
| * routine. |
| */ |
| static int |
| load_data(struct snd_sf_list *sflist, const void __user *data, long count) |
| { |
| struct snd_soundfont *sf; |
| struct soundfont_sample_info sample_info; |
| struct snd_sf_sample *sp; |
| long off; |
| |
| /* patch must be opened */ |
| if ((sf = sflist->currsf) == NULL) |
| return -EINVAL; |
| |
| if (is_special_type(sf->type)) |
| return -EINVAL; |
| |
| if (copy_from_user(&sample_info, data, sizeof(sample_info))) |
| return -EFAULT; |
| |
| off = sizeof(sample_info); |
| |
| if (sample_info.size != (count-off)/2) |
| return -EINVAL; |
| |
| /* Check for dup */ |
| if (find_sample(sf, sample_info.sample)) { |
| /* if shared sample, skip this data */ |
| if (sf->type & SNDRV_SFNT_PAT_SHARED) |
| return 0; |
| return -EINVAL; |
| } |
| |
| /* Allocate a new sample structure */ |
| if ((sp = sf_sample_new(sflist, sf)) == NULL) |
| return -ENOMEM; |
| |
| sp->v = sample_info; |
| sp->v.sf_id = sf->id; |
| sp->v.dummy = 0; |
| sp->v.truesize = sp->v.size; |
| |
| /* |
| * If there is wave data then load it. |
| */ |
| if (sp->v.size > 0) { |
| int rc; |
| rc = sflist->callback.sample_new |
| (sflist->callback.private_data, sp, sflist->memhdr, |
| data + off, count - off); |
| if (rc < 0) { |
| sf_sample_delete(sflist, sf, sp); |
| return rc; |
| } |
| sflist->mem_used += sp->v.truesize; |
| } |
| |
| return count; |
| } |
| |
| |
| /* log2_tbl[i] = log2(i+128) * 0x10000 */ |
| static int log_tbl[129] = { |
| 0x70000, 0x702df, 0x705b9, 0x7088e, 0x70b5d, 0x70e26, 0x710eb, 0x713aa, |
| 0x71663, 0x71918, 0x71bc8, 0x71e72, 0x72118, 0x723b9, 0x72655, 0x728ed, |
| 0x72b80, 0x72e0e, 0x73098, 0x7331d, 0x7359e, 0x7381b, 0x73a93, 0x73d08, |
| 0x73f78, 0x741e4, 0x7444c, 0x746b0, 0x74910, 0x74b6c, 0x74dc4, 0x75019, |
| 0x75269, 0x754b6, 0x75700, 0x75946, 0x75b88, 0x75dc7, 0x76002, 0x7623a, |
| 0x7646e, 0x766a0, 0x768cd, 0x76af8, 0x76d1f, 0x76f43, 0x77164, 0x77382, |
| 0x7759d, 0x777b4, 0x779c9, 0x77bdb, 0x77dea, 0x77ff5, 0x781fe, 0x78404, |
| 0x78608, 0x78808, 0x78a06, 0x78c01, 0x78df9, 0x78fef, 0x791e2, 0x793d2, |
| 0x795c0, 0x797ab, 0x79993, 0x79b79, 0x79d5d, 0x79f3e, 0x7a11d, 0x7a2f9, |
| 0x7a4d3, 0x7a6ab, 0x7a880, 0x7aa53, 0x7ac24, 0x7adf2, 0x7afbe, 0x7b188, |
| 0x7b350, 0x7b515, 0x7b6d8, 0x7b899, 0x7ba58, 0x7bc15, 0x7bdd0, 0x7bf89, |
| 0x7c140, 0x7c2f5, 0x7c4a7, 0x7c658, 0x7c807, 0x7c9b3, 0x7cb5e, 0x7cd07, |
| 0x7ceae, 0x7d053, 0x7d1f7, 0x7d398, 0x7d538, 0x7d6d6, 0x7d872, 0x7da0c, |
| 0x7dba4, 0x7dd3b, 0x7ded0, 0x7e063, 0x7e1f4, 0x7e384, 0x7e512, 0x7e69f, |
| 0x7e829, 0x7e9b3, 0x7eb3a, 0x7ecc0, 0x7ee44, 0x7efc7, 0x7f148, 0x7f2c8, |
| 0x7f446, 0x7f5c2, 0x7f73d, 0x7f8b7, 0x7fa2f, 0x7fba5, 0x7fd1a, 0x7fe8d, |
| 0x80000, |
| }; |
| |
| /* convert from linear to log value |
| * |
| * conversion: value = log2(amount / base) * ratio |
| * |
| * argument: |
| * amount = linear value (unsigned, 32bit max) |
| * offset = base offset (:= log2(base) * 0x10000) |
| * ratio = division ratio |
| * |
| */ |
| int |
| snd_sf_linear_to_log(unsigned int amount, int offset, int ratio) |
| { |
| int v; |
| int s, low, bit; |
| |
| if (amount < 2) |
| return 0; |
| for (bit = 0; ! (amount & 0x80000000L); bit++) |
| amount <<= 1; |
| s = (amount >> 24) & 0x7f; |
| low = (amount >> 16) & 0xff; |
| /* linear approxmimation by lower 8 bit */ |
| v = (log_tbl[s + 1] * low + log_tbl[s] * (0x100 - low)) >> 8; |
| v -= offset; |
| v = (v * ratio) >> 16; |
| v += (24 - bit) * ratio; |
| return v; |
| } |
| |
| EXPORT_SYMBOL(snd_sf_linear_to_log); |
| |
| |
| #define OFFSET_MSEC 653117 /* base = 1000 */ |
| #define OFFSET_ABSCENT 851781 /* base = 8176 */ |
| #define OFFSET_SAMPLERATE 1011119 /* base = 44100 */ |
| |
| #define ABSCENT_RATIO 1200 |
| #define TIMECENT_RATIO 1200 |
| #define SAMPLERATE_RATIO 4096 |
| |
| /* |
| * mHz to abscent |
| * conversion: abscent = log2(MHz / 8176) * 1200 |
| */ |
| static int |
| freq_to_note(int mhz) |
| { |
| return snd_sf_linear_to_log(mhz, OFFSET_ABSCENT, ABSCENT_RATIO); |
| } |
| |
| /* convert Hz to AWE32 rate offset: |
| * sample pitch offset for the specified sample rate |
| * rate=44100 is no offset, each 4096 is 1 octave (twice). |
| * eg, when rate is 22050, this offset becomes -4096. |
| * |
| * conversion: offset = log2(Hz / 44100) * 4096 |
| */ |
| static int |
| calc_rate_offset(int hz) |
| { |
| return snd_sf_linear_to_log(hz, OFFSET_SAMPLERATE, SAMPLERATE_RATIO); |
| } |
| |
| |
| /* calculate GUS envelope time */ |
| static int |
| calc_gus_envelope_time(int rate, int start, int end) |
| { |
| int r, p, t; |
| r = (3 - ((rate >> 6) & 3)) * 3; |
| p = rate & 0x3f; |
| t = end - start; |
| if (t < 0) t = -t; |
| if (13 > r) |
| t = t << (13 - r); |
| else |
| t = t >> (r - 13); |
| return (t * 10) / (p * 441); |
| } |
| |
| /* convert envelope time parameter to soundfont parameters */ |
| |
| /* attack & decay/release time table (msec) */ |
| static short attack_time_tbl[128] = { |
| 32767, 32767, 5989, 4235, 2994, 2518, 2117, 1780, 1497, 1373, 1259, 1154, 1058, 970, 890, 816, |
| 707, 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, |
| 361, 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, |
| 180, 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, |
| 90, 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, |
| 45, 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, |
| 22, 21, 20, 19, 19, 18, 17, 16, 16, 15, 15, 14, 13, 13, 12, 12, |
| 11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 0, |
| }; |
| |
| static short decay_time_tbl[128] = { |
| 32767, 32767, 22614, 15990, 11307, 9508, 7995, 6723, 5653, 5184, 4754, 4359, 3997, 3665, 3361, 3082, |
| 2828, 2765, 2648, 2535, 2428, 2325, 2226, 2132, 2042, 1955, 1872, 1793, 1717, 1644, 1574, 1507, |
| 1443, 1382, 1324, 1267, 1214, 1162, 1113, 1066, 978, 936, 897, 859, 822, 787, 754, 722, |
| 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377, 361, |
| 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188, 180, |
| 172, 165, 158, 151, 145, 139, 133, 127, 122, 117, 112, 107, 102, 98, 94, 90, |
| 86, 82, 79, 75, 72, 69, 66, 63, 61, 58, 56, 53, 51, 49, 47, 45, |
| 43, 41, 39, 37, 36, 34, 33, 31, 30, 29, 28, 26, 25, 24, 23, 22, |
| }; |
| |
| /* delay time = 0x8000 - msec/92 */ |
| int |
| snd_sf_calc_parm_hold(int msec) |
| { |
| int val = (0x7f * 92 - msec) / 92; |
| if (val < 1) val = 1; |
| if (val >= 126) val = 126; |
| return val; |
| } |
| |
| /* search an index for specified time from given time table */ |
| static int |
| calc_parm_search(int msec, short *table) |
| { |
| int left = 1, right = 127, mid; |
| while (left < right) { |
| mid = (left + right) / 2; |
| if (msec < (int)table[mid]) |
| left = mid + 1; |
| else |
| right = mid; |
| } |
| return left; |
| } |
| |
| /* attack time: search from time table */ |
| int |
| snd_sf_calc_parm_attack(int msec) |
| { |
| return calc_parm_search(msec, attack_time_tbl); |
| } |
| |
| /* decay/release time: search from time table */ |
| int |
| snd_sf_calc_parm_decay(int msec) |
| { |
| return calc_parm_search(msec, decay_time_tbl); |
| } |
| |
| int snd_sf_vol_table[128] = { |
| 255,111,95,86,79,74,70,66,63,61,58,56,54,52,50,49, |
| 47,46,45,43,42,41,40,39,38,37,36,35,34,34,33,32, |
| 31,31,30,29,29,28,27,27,26,26,25,24,24,23,23,22, |
| 22,21,21,21,20,20,19,19,18,18,18,17,17,16,16,16, |
| 15,15,15,14,14,14,13,13,13,12,12,12,11,11,11,10, |
| 10,10,10,9,9,9,8,8,8,8,7,7,7,7,6,6, |
| 6,6,5,5,5,5,5,4,4,4,4,3,3,3,3,3, |
| 2,2,2,2,2,1,1,1,1,1,0,0,0,0,0,0, |
| }; |
| |
| |
| #define calc_gus_sustain(val) (0x7f - snd_sf_vol_table[(val)/2]) |
| #define calc_gus_attenuation(val) snd_sf_vol_table[(val)/2] |
| |
| /* load GUS patch */ |
| static int |
| load_guspatch(struct snd_sf_list *sflist, const char __user *data, |
| long count, int client) |
| { |
| struct patch_info patch; |
| struct snd_soundfont *sf; |
| struct snd_sf_zone *zone; |
| struct snd_sf_sample *smp; |
| int note, sample_id; |
| int rc; |
| |
| if (count < (long)sizeof(patch)) { |
| snd_printk("patch record too small %ld\n", count); |
| return -EINVAL; |
| } |
| if (copy_from_user(&patch, data, sizeof(patch))) |
| return -EFAULT; |
| |
| count -= sizeof(patch); |
| data += sizeof(patch); |
| |
| sf = newsf(sflist, SNDRV_SFNT_PAT_TYPE_GUS|SNDRV_SFNT_PAT_SHARED, NULL); |
| if (sf == NULL) |
| return -ENOMEM; |
| if ((smp = sf_sample_new(sflist, sf)) == NULL) |
| return -ENOMEM; |
| sample_id = sflist->sample_counter; |
| smp->v.sample = sample_id; |
| smp->v.start = 0; |
| smp->v.end = patch.len; |
| smp->v.loopstart = patch.loop_start; |
| smp->v.loopend = patch.loop_end; |
| smp->v.size = patch.len; |
| |
| /* set up mode flags */ |
| smp->v.mode_flags = 0; |
| if (!(patch.mode & WAVE_16_BITS)) |
| smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_8BITS; |
| if (patch.mode & WAVE_UNSIGNED) |
| smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_UNSIGNED; |
| smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_NO_BLANK; |
| if (!(patch.mode & (WAVE_LOOPING|WAVE_BIDIR_LOOP|WAVE_LOOP_BACK))) |
| smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_SINGLESHOT; |
| if (patch.mode & WAVE_BIDIR_LOOP) |
| smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_BIDIR_LOOP; |
| if (patch.mode & WAVE_LOOP_BACK) |
| smp->v.mode_flags |= SNDRV_SFNT_SAMPLE_REVERSE_LOOP; |
| |
| if (patch.mode & WAVE_16_BITS) { |
| /* convert to word offsets */ |
| smp->v.size /= 2; |
| smp->v.end /= 2; |
| smp->v.loopstart /= 2; |
| smp->v.loopend /= 2; |
| } |
| /*smp->v.loopend++;*/ |
| |
| smp->v.dummy = 0; |
| smp->v.truesize = 0; |
| smp->v.sf_id = sf->id; |
| |
| /* set up voice info */ |
| if ((zone = sf_zone_new(sflist, sf)) == NULL) { |
| sf_sample_delete(sflist, sf, smp); |
| return -ENOMEM; |
| } |
| |
| /* |
| * load wave data |
| */ |
| if (sflist->callback.sample_new) { |
| rc = sflist->callback.sample_new |
| (sflist->callback.private_data, smp, sflist->memhdr, |
| data, count); |
| if (rc < 0) { |
| sf_sample_delete(sflist, sf, smp); |
| return rc; |
| } |
| /* memory offset is updated after */ |
| } |
| |
| /* update the memory offset here */ |
| sflist->mem_used += smp->v.truesize; |
| |
| zone->v.sample = sample_id; /* the last sample */ |
| zone->v.rate_offset = calc_rate_offset(patch.base_freq); |
| note = freq_to_note(patch.base_note); |
| zone->v.root = note / 100; |
| zone->v.tune = -(note % 100); |
| zone->v.low = (freq_to_note(patch.low_note) + 99) / 100; |
| zone->v.high = freq_to_note(patch.high_note) / 100; |
| /* panning position; -128 - 127 => 0-127 */ |
| zone->v.pan = (patch.panning + 128) / 2; |
| #if 0 |
| snd_printk("gus: basefrq=%d (ofs=%d) root=%d,tune=%d, range:%d-%d\n", |
| (int)patch.base_freq, zone->v.rate_offset, |
| zone->v.root, zone->v.tune, zone->v.low, zone->v.high); |
| #endif |
| |
| /* detuning is ignored */ |
| /* 6points volume envelope */ |
| if (patch.mode & WAVE_ENVELOPES) { |
| int attack, hold, decay, release; |
| attack = calc_gus_envelope_time |
| (patch.env_rate[0], 0, patch.env_offset[0]); |
| hold = calc_gus_envelope_time |
| (patch.env_rate[1], patch.env_offset[0], |
| patch.env_offset[1]); |
| decay = calc_gus_envelope_time |
| (patch.env_rate[2], patch.env_offset[1], |
| patch.env_offset[2]); |
| release = calc_gus_envelope_time |
| (patch.env_rate[3], patch.env_offset[1], |
| patch.env_offset[4]); |
| release += calc_gus_envelope_time |
| (patch.env_rate[4], patch.env_offset[3], |
| patch.env_offset[4]); |
| release += calc_gus_envelope_time |
| (patch.env_rate[5], patch.env_offset[4], |
| patch.env_offset[5]); |
| zone->v.parm.volatkhld = |
| (snd_sf_calc_parm_hold(hold) << 8) | |
| snd_sf_calc_parm_attack(attack); |
| zone->v.parm.voldcysus = (calc_gus_sustain(patch.env_offset[2]) << 8) | |
| snd_sf_calc_parm_decay(decay); |
| zone->v.parm.volrelease = 0x8000 | snd_sf_calc_parm_decay(release); |
| zone->v.attenuation = calc_gus_attenuation(patch.env_offset[0]); |
| #if 0 |
| snd_printk("gus: atkhld=%x, dcysus=%x, volrel=%x, att=%d\n", |
| zone->v.parm.volatkhld, |
| zone->v.parm.voldcysus, |
| zone->v.parm.volrelease, |
| zone->v.attenuation); |
| #endif |
| } |
| |
| /* fast release */ |
| if (patch.mode & WAVE_FAST_RELEASE) { |
| zone->v.parm.volrelease = 0x807f; |
| } |
| |
| /* tremolo effect */ |
| if (patch.mode & WAVE_TREMOLO) { |
| int rate = (patch.tremolo_rate * 1000 / 38) / 42; |
| zone->v.parm.tremfrq = ((patch.tremolo_depth / 2) << 8) | rate; |
| } |
| /* vibrato effect */ |
| if (patch.mode & WAVE_VIBRATO) { |
| int rate = (patch.vibrato_rate * 1000 / 38) / 42; |
| zone->v.parm.fm2frq2 = ((patch.vibrato_depth / 6) << 8) | rate; |
| } |
| |
| /* scale_freq, scale_factor, volume, and fractions not implemented */ |
| |
| if (!(smp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT)) |
| zone->v.mode = SNDRV_SFNT_MODE_LOOPING; |
| else |
| zone->v.mode = 0; |
| |
| /* append to the tail of the list */ |
| /*zone->bank = ctrls[AWE_MD_GUS_BANK];*/ |
| zone->bank = 0; |
| zone->instr = patch.instr_no; |
| zone->mapped = 0; |
| zone->v.sf_id = sf->id; |
| |
| zone->sample = set_sample(sf, &zone->v); |
| |
| /* rebuild preset now */ |
| add_preset(sflist, zone); |
| |
| return 0; |
| } |
| |
| /* load GUS patch */ |
| int |
| snd_soundfont_load_guspatch(struct snd_sf_list *sflist, const char __user *data, |
| long count, int client) |
| { |
| int rc; |
| lock_preset(sflist); |
| rc = load_guspatch(sflist, data, count, client); |
| unlock_preset(sflist); |
| return rc; |
| } |
| |
| |
| /* |
| * Rebuild the preset table. This is like a hash table in that it allows |
| * quick access to the zone information. For each preset there are zone |
| * structures linked by next_instr and by next_zone. Former is the whole |
| * link for this preset, and latter is the link for zone (i.e. instrument/ |
| * bank/key combination). |
| */ |
| static void |
| rebuild_presets(struct snd_sf_list *sflist) |
| { |
| struct snd_soundfont *sf; |
| struct snd_sf_zone *cur; |
| |
| /* clear preset table */ |
| memset(sflist->presets, 0, sizeof(sflist->presets)); |
| |
| /* search all fonts and insert each font */ |
| for (sf = sflist->fonts; sf; sf = sf->next) { |
| for (cur = sf->zones; cur; cur = cur->next) { |
| if (! cur->mapped && cur->sample == NULL) { |
| /* try again to search the corresponding sample */ |
| cur->sample = set_sample(sf, &cur->v); |
| if (cur->sample == NULL) |
| continue; |
| } |
| |
| add_preset(sflist, cur); |
| } |
| } |
| } |
| |
| |
| /* |
| * add the given zone to preset table |
| */ |
| static void |
| add_preset(struct snd_sf_list *sflist, struct snd_sf_zone *cur) |
| { |
| struct snd_sf_zone *zone; |
| int index; |
| |
| zone = search_first_zone(sflist, cur->bank, cur->instr, cur->v.low); |
| if (zone && zone->v.sf_id != cur->v.sf_id) { |
| /* different instrument was already defined */ |
| struct snd_sf_zone *p; |
| /* compare the allocated time */ |
| for (p = zone; p; p = p->next_zone) { |
| if (p->counter > cur->counter) |
| /* the current is older.. skipped */ |
| return; |
| } |
| /* remove old zones */ |
| delete_preset(sflist, zone); |
| zone = NULL; /* do not forget to clear this! */ |
| } |
| |
| /* prepend this zone */ |
| if ((index = get_index(cur->bank, cur->instr, cur->v.low)) < 0) |
| return; |
| cur->next_zone = zone; /* zone link */ |
| cur->next_instr = sflist->presets[index]; /* preset table link */ |
| sflist->presets[index] = cur; |
| } |
| |
| /* |
| * delete the given zones from preset_table |
| */ |
| static void |
| delete_preset(struct snd_sf_list *sflist, struct snd_sf_zone *zp) |
| { |
| int index; |
| struct snd_sf_zone *p; |
| |
| if ((index = get_index(zp->bank, zp->instr, zp->v.low)) < 0) |
| return; |
| for (p = sflist->presets[index]; p; p = p->next_instr) { |
| while (p->next_instr == zp) { |
| p->next_instr = zp->next_instr; |
| zp = zp->next_zone; |
| if (zp == NULL) |
| return; |
| } |
| } |
| } |
| |
| |
| /* |
| * Search matching zones from preset table. |
| * The note can be rewritten by preset mapping (alias). |
| * The found zones are stored on 'table' array. max_layers defines |
| * the maximum number of elements in this array. |
| * This function returns the number of found zones. 0 if not found. |
| */ |
| int |
| snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel, |
| int preset, int bank, |
| int def_preset, int def_bank, |
| struct snd_sf_zone **table, int max_layers) |
| { |
| int nvoices; |
| unsigned long flags; |
| |
| /* this function is supposed to be called atomically, |
| * so we check the lock. if it's busy, just returns 0 to |
| * tell the caller the busy state |
| */ |
| spin_lock_irqsave(&sflist->lock, flags); |
| if (sflist->presets_locked) { |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| return 0; |
| } |
| nvoices = search_zones(sflist, notep, vel, preset, bank, |
| table, max_layers, 0); |
| if (! nvoices) { |
| if (preset != def_preset || bank != def_bank) |
| nvoices = search_zones(sflist, notep, vel, |
| def_preset, def_bank, |
| table, max_layers, 0); |
| } |
| spin_unlock_irqrestore(&sflist->lock, flags); |
| return nvoices; |
| } |
| |
| |
| /* |
| * search the first matching zone |
| */ |
| static struct snd_sf_zone * |
| search_first_zone(struct snd_sf_list *sflist, int bank, int preset, int key) |
| { |
| int index; |
| struct snd_sf_zone *zp; |
| |
| if ((index = get_index(bank, preset, key)) < 0) |
| return NULL; |
| for (zp = sflist->presets[index]; zp; zp = zp->next_instr) { |
| if (zp->instr == preset && zp->bank == bank) |
| return zp; |
| } |
| return NULL; |
| } |
| |
| |
| /* |
| * search matching zones from sflist. can be called recursively. |
| */ |
| static int |
| search_zones(struct snd_sf_list *sflist, int *notep, int vel, |
| int preset, int bank, struct snd_sf_zone **table, |
| int max_layers, int level) |
| { |
| struct snd_sf_zone *zp; |
| int nvoices; |
| |
| zp = search_first_zone(sflist, bank, preset, *notep); |
| nvoices = 0; |
| for (; zp; zp = zp->next_zone) { |
| if (*notep >= zp->v.low && *notep <= zp->v.high && |
| vel >= zp->v.vellow && vel <= zp->v.velhigh) { |
| if (zp->mapped) { |
| /* search preset mapping (aliasing) */ |
| int key = zp->v.fixkey; |
| preset = zp->v.start; |
| bank = zp->v.end; |
| |
| if (level > 5) /* too deep alias level */ |
| return 0; |
| if (key < 0) |
| key = *notep; |
| nvoices = search_zones(sflist, &key, vel, |
| preset, bank, table, |
| max_layers, level + 1); |
| if (nvoices > 0) |
| *notep = key; |
| break; |
| } |
| table[nvoices++] = zp; |
| if (nvoices >= max_layers) |
| break; |
| } |
| } |
| |
| return nvoices; |
| } |
| |
| |
| /* calculate the index of preset table: |
| * drums are mapped from 128 to 255 according to its note key. |
| * other instruments are mapped from 0 to 127. |
| * if the index is out of range, return -1. |
| */ |
| static int |
| get_index(int bank, int instr, int key) |
| { |
| int index; |
| if (SF_IS_DRUM_BANK(bank)) |
| index = key + SF_MAX_INSTRUMENTS; |
| else |
| index = instr; |
| index = index % SF_MAX_PRESETS; |
| if (index < 0) |
| return -1; |
| return index; |
| } |
| |
| /* |
| * Initialise the sflist structure. |
| */ |
| static void |
| snd_sf_init(struct snd_sf_list *sflist) |
| { |
| memset(sflist->presets, 0, sizeof(sflist->presets)); |
| |
| sflist->mem_used = 0; |
| sflist->currsf = NULL; |
| sflist->open_client = -1; |
| sflist->fonts = NULL; |
| sflist->fonts_size = 0; |
| sflist->zone_counter = 0; |
| sflist->sample_counter = 0; |
| sflist->zone_locked = 0; |
| sflist->sample_locked = 0; |
| } |
| |
| /* |
| * Release all list records |
| */ |
| static void |
| snd_sf_clear(struct snd_sf_list *sflist) |
| { |
| struct snd_soundfont *sf, *nextsf; |
| struct snd_sf_zone *zp, *nextzp; |
| struct snd_sf_sample *sp, *nextsp; |
| |
| for (sf = sflist->fonts; sf; sf = nextsf) { |
| nextsf = sf->next; |
| for (zp = sf->zones; zp; zp = nextzp) { |
| nextzp = zp->next; |
| kfree(zp); |
| } |
| for (sp = sf->samples; sp; sp = nextsp) { |
| nextsp = sp->next; |
| if (sflist->callback.sample_free) |
| sflist->callback.sample_free(sflist->callback.private_data, |
| sp, sflist->memhdr); |
| kfree(sp); |
| } |
| kfree(sf); |
| } |
| |
| snd_sf_init(sflist); |
| } |
| |
| |
| /* |
| * Create a new sflist structure |
| */ |
| struct snd_sf_list * |
| snd_sf_new(struct snd_sf_callback *callback, struct snd_util_memhdr *hdr) |
| { |
| struct snd_sf_list *sflist; |
| |
| if ((sflist = kzalloc(sizeof(*sflist), GFP_KERNEL)) == NULL) |
| return NULL; |
| |
| mutex_init(&sflist->presets_mutex); |
| spin_lock_init(&sflist->lock); |
| sflist->memhdr = hdr; |
| |
| if (callback) |
| sflist->callback = *callback; |
| |
| snd_sf_init(sflist); |
| return sflist; |
| } |
| |
| |
| /* |
| * Free everything allocated off the sflist structure. |
| */ |
| void |
| snd_sf_free(struct snd_sf_list *sflist) |
| { |
| if (sflist == NULL) |
| return; |
| |
| lock_preset(sflist); |
| if (sflist->callback.sample_reset) |
| sflist->callback.sample_reset(sflist->callback.private_data); |
| snd_sf_clear(sflist); |
| unlock_preset(sflist); |
| |
| kfree(sflist); |
| } |
| |
| /* |
| * Remove all samples |
| * The soundcard should be silet before calling this function. |
| */ |
| int |
| snd_soundfont_remove_samples(struct snd_sf_list *sflist) |
| { |
| lock_preset(sflist); |
| if (sflist->callback.sample_reset) |
| sflist->callback.sample_reset(sflist->callback.private_data); |
| snd_sf_clear(sflist); |
| unlock_preset(sflist); |
| |
| return 0; |
| } |
| |
| /* |
| * Remove unlocked samples. |
| * The soundcard should be silent before calling this function. |
| */ |
| int |
| snd_soundfont_remove_unlocked(struct snd_sf_list *sflist) |
| { |
| struct snd_soundfont *sf; |
| struct snd_sf_zone *zp, *nextzp; |
| struct snd_sf_sample *sp, *nextsp; |
| |
| lock_preset(sflist); |
| |
| if (sflist->callback.sample_reset) |
| sflist->callback.sample_reset(sflist->callback.private_data); |
| |
| /* to be sure */ |
| memset(sflist->presets, 0, sizeof(sflist->presets)); |
| |
| for (sf = sflist->fonts; sf; sf = sf->next) { |
| for (zp = sf->zones; zp; zp = nextzp) { |
| if (zp->counter < sflist->zone_locked) |
| break; |
| nextzp = zp->next; |
| sf->zones = nextzp; |
| kfree(zp); |
| } |
| |
| for (sp = sf->samples; sp; sp = nextsp) { |
| if (sp->counter < sflist->sample_locked) |
| break; |
| nextsp = sp->next; |
| sf->samples = nextsp; |
| sflist->mem_used -= sp->v.truesize; |
| if (sflist->callback.sample_free) |
| sflist->callback.sample_free(sflist->callback.private_data, |
| sp, sflist->memhdr); |
| kfree(sp); |
| } |
| } |
| |
| sflist->zone_counter = sflist->zone_locked; |
| sflist->sample_counter = sflist->sample_locked; |
| |
| rebuild_presets(sflist); |
| |
| unlock_preset(sflist); |
| return 0; |
| } |