sound/pci/emu10k1/emu10k1_patch.c

   1 /*
   2  *  Patch transfer callback for Emu10k1
   3  *
   4  *  Copyright (C) 2000 Takashi iwai <tiwai@suse.de>
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  */
  20 /*
  21  * All the code for loading in a patch.  There is very little that is
  22  * chip specific here.  Just the actual writing to the board.
  23  */
  24
  25 #include "emu10k1_synth_local.h"
  26
  27 /*
  28  */
  29 #define BLANK_LOOP_START        4
  30 #define BLANK_LOOP_END          8
  31 #define BLANK_LOOP_SIZE         12
  32 #define BLANK_HEAD_SIZE         32
  33
  34 /*
  35  * allocate a sample block and copy data from userspace
  36  */
  37 int
  38 snd_emu10k1_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp,
  39                        struct snd_util_memhdr *hdr,
  40                        const void __user *data, long count)
  41 {
  42         int offset;
  43         int truesize, size, loopsize, blocksize;
  44         int loopend, sampleend;
  45         unsigned int start_addr;
  46         struct snd_emu10k1 *emu;
  47
  48         emu = rec->hw;
  49         if (snd_BUG_ON(!sp || !hdr))
  50                 return -EINVAL;
  51
  52         if (sp->v.size == 0) {
  53                 dev_dbg(emu->card->dev,
  54                         "emu: rom font for sample %d\n", sp->v.sample);
  55                 return 0;
  56         }
  57
  58         /* recalculate address offset */
  59         sp->v.end -= sp->v.start;
  60         sp->v.loopstart -= sp->v.start;
  61         sp->v.loopend -= sp->v.start;
  62         sp->v.start = 0;
  63
  64         /* some samples have invalid data.  the addresses are corrected in voice info */
  65         sampleend = sp->v.end;
  66         if (sampleend > sp->v.size)
  67                 sampleend = sp->v.size;
  68         loopend = sp->v.loopend;
  69         if (loopend > sampleend)
  70                 loopend = sampleend;
  71
  72         /* be sure loop points start < end */
  73         if (sp->v.loopstart >= sp->v.loopend)
  74                 swap(sp->v.loopstart, sp->v.loopend);
  75
  76         /* compute true data size to be loaded */
  77         truesize = sp->v.size + BLANK_HEAD_SIZE;
  78         loopsize = 0;
  79 #if 0 /* not supported */
  80         if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP))
  81                 loopsize = sp->v.loopend - sp->v.loopstart;
  82         truesize += loopsize;
  83 #endif
  84         if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK)
  85                 truesize += BLANK_LOOP_SIZE;
  86
  87         /* try to allocate a memory block */
  88         blocksize = truesize;
  89         if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
  90                 blocksize *= 2;
  91         sp->block = snd_emu10k1_synth_alloc(emu, blocksize);
  92         if (sp->block == NULL) {
  93                 dev_dbg(emu->card->dev,
  94                         "synth malloc failed (size=%d)\n", blocksize);
  95                 /* not ENOMEM (for compatibility with OSS) */
  96                 return -ENOSPC;
  97         }
  98         /* set the total size */
  99         sp->v.truesize = blocksize;
 100
 101         /* write blank samples at head */
 102         offset = 0;
 103         size = BLANK_HEAD_SIZE;
 104         if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
 105                 size *= 2;
 106         if (offset + size > blocksize)
 107                 return -EINVAL;
 108         snd_emu10k1_synth_bzero(emu, sp->block, offset, size);
 109         offset += size;
 110
 111         /* copy start->loopend */
 112         size = loopend;
 113         if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
 114                 size *= 2;
 115         if (offset + size > blocksize)
 116                 return -EINVAL;
 117         if (snd_emu10k1_synth_copy_from_user(emu, sp->block, offset, data, size)) {
 118                 snd_emu10k1_synth_free(emu, sp->block);
 119                 sp->block = NULL;
 120                 return -EFAULT;
 121         }
 122         offset += size;
 123         data += size;
 124
 125 #if 0 /* not supported yet */
 126         /* handle reverse (or bidirectional) loop */
 127         if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP)) {
 128                 /* copy loop in reverse */
 129                 if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) {
 130                         int woffset;
 131                         unsigned short *wblock = (unsigned short*)block;
 132                         woffset = offset / 2;
 133                         if (offset + loopsize * 2 > blocksize)
 134                                 return -EINVAL;
 135                         for (i = 0; i < loopsize; i++)
 136                                 wblock[woffset + i] = wblock[woffset - i -1];
 137                         offset += loopsize * 2;
 138                 } else {
 139                         if (offset + loopsize > blocksize)
 140                                 return -EINVAL;
 141                         for (i = 0; i < loopsize; i++)
 142                                 block[offset + i] = block[offset - i -1];
 143                         offset += loopsize;
 144                 }
 145
 146                 /* modify loop pointers */
 147                 if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_BIDIR_LOOP) {
 148                         sp->v.loopend += loopsize;
 149                 } else {
 150                         sp->v.loopstart += loopsize;
 151                         sp->v.loopend += loopsize;
 152                 }
 153                 /* add sample pointer */
 154                 sp->v.end += loopsize;
 155         }
 156 #endif
 157
 158         /* loopend -> sample end */
 159         size = sp->v.size - loopend;
 160         if (size < 0)
 161                 return -EINVAL;
 162         if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
 163                 size *= 2;
 164         if (snd_emu10k1_synth_copy_from_user(emu, sp->block, offset, data, size)) {
 165                 snd_emu10k1_synth_free(emu, sp->block);
 166                 sp->block = NULL;
 167                 return -EFAULT;
 168         }
 169         offset += size;
 170
 171         /* clear rest of samples (if any) */
 172         if (offset < blocksize)
 173                 snd_emu10k1_synth_bzero(emu, sp->block, offset, blocksize - offset);
 174
 175         if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK) {
 176                 /* if no blank loop is attached in the sample, add it */
 177                 if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT) {
 178                         sp->v.loopstart = sp->v.end + BLANK_LOOP_START;
 179                         sp->v.loopend = sp->v.end + BLANK_LOOP_END;
 180                 }
 181         }
 182
 183 #if 0 /* not supported yet */
 184         if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_UNSIGNED) {
 185                 /* unsigned -> signed */
 186                 if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) {
 187                         unsigned short *wblock = (unsigned short*)block;
 188                         for (i = 0; i < truesize; i++)
 189                                 wblock[i] ^= 0x8000;
 190                 } else {
 191                         for (i = 0; i < truesize; i++)
 192                                 block[i] ^= 0x80;
 193                 }
 194         }
 195 #endif
 196
 197         /* recalculate offset */
 198         start_addr = BLANK_HEAD_SIZE * 2;
 199         if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
 200                 start_addr >>= 1;
 201         sp->v.start += start_addr;
 202         sp->v.end += start_addr;
 203         sp->v.loopstart += start_addr;
 204         sp->v.loopend += start_addr;
 205
 206         return 0;
 207 }
 208
 209 /*
 210  * free a sample block
 211  */
 212 int
 213 snd_emu10k1_sample_free(struct snd_emux *rec, struct snd_sf_sample *sp,
 214                         struct snd_util_memhdr *hdr)
 215 {
 216         struct snd_emu10k1 *emu;
 217
 218         emu = rec->hw;
 219         if (snd_BUG_ON(!sp || !hdr))
 220                 return -EINVAL;
 221
 222         if (sp->block) {
 223                 snd_emu10k1_synth_free(emu, sp->block);
 224                 sp->block = NULL;
 225         }
 226         return 0;
 227 }
 228