linux/sound/pci/emu10k1/emu10k1_patch.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

216 lines
5.4 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Patch transfer callback for Emu10k1
*
* Copyright (C) 2000 Takashi iwai <tiwai@suse.de>
*/
/*
* All the code for loading in a patch. There is very little that is
* chip specific here. Just the actual writing to the board.
*/
#include "emu10k1_synth_local.h"
/*
*/
#define BLANK_LOOP_START 4
#define BLANK_LOOP_END 8
#define BLANK_LOOP_SIZE 12
#define BLANK_HEAD_SIZE 32
/*
* allocate a sample block and copy data from userspace
*/
int
snd_emu10k1_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp,
struct snd_util_memhdr *hdr,
const void __user *data, long count)
{
int offset;
int truesize, size, loopsize, blocksize;
int loopend, sampleend;
unsigned int start_addr;
struct snd_emu10k1 *emu;
emu = rec->hw;
if (snd_BUG_ON(!sp || !hdr))
return -EINVAL;
if (sp->v.size == 0) {
dev_dbg(emu->card->dev,
"emu: rom font for sample %d\n", sp->v.sample);
return 0;
}
/* recalculate address offset */
sp->v.end -= sp->v.start;
sp->v.loopstart -= sp->v.start;
sp->v.loopend -= sp->v.start;
sp->v.start = 0;
/* some samples have invalid data. the addresses are corrected in voice info */
sampleend = sp->v.end;
if (sampleend > sp->v.size)
sampleend = sp->v.size;
loopend = sp->v.loopend;
if (loopend > sampleend)
loopend = sampleend;
/* be sure loop points start < end */
if (sp->v.loopstart >= sp->v.loopend)
swap(sp->v.loopstart, sp->v.loopend);
/* compute true data size to be loaded */
truesize = sp->v.size + BLANK_HEAD_SIZE;
loopsize = 0;
#if 0 /* not supported */
if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP))
loopsize = sp->v.loopend - sp->v.loopstart;
truesize += loopsize;
#endif
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK)
truesize += BLANK_LOOP_SIZE;
/* try to allocate a memory block */
blocksize = truesize;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
blocksize *= 2;
sp->block = snd_emu10k1_synth_alloc(emu, blocksize);
if (sp->block == NULL) {
dev_dbg(emu->card->dev,
"synth malloc failed (size=%d)\n", blocksize);
/* not ENOMEM (for compatibility with OSS) */
return -ENOSPC;
}
/* set the total size */
sp->v.truesize = blocksize;
/* write blank samples at head */
offset = 0;
size = BLANK_HEAD_SIZE;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
size *= 2;
if (offset + size > blocksize)
return -EINVAL;
snd_emu10k1_synth_bzero(emu, sp->block, offset, size);
offset += size;
/* copy start->loopend */
size = loopend;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
size *= 2;
if (offset + size > blocksize)
return -EINVAL;
if (snd_emu10k1_synth_copy_from_user(emu, sp->block, offset, data, size)) {
snd_emu10k1_synth_free(emu, sp->block);
sp->block = NULL;
return -EFAULT;
}
offset += size;
data += size;
#if 0 /* not supported yet */
/* handle reverse (or bidirectional) loop */
if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP|SNDRV_SFNT_SAMPLE_REVERSE_LOOP)) {
/* copy loop in reverse */
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) {
int woffset;
unsigned short *wblock = (unsigned short*)block;
woffset = offset / 2;
if (offset + loopsize * 2 > blocksize)
return -EINVAL;
for (i = 0; i < loopsize; i++)
wblock[woffset + i] = wblock[woffset - i -1];
offset += loopsize * 2;
} else {
if (offset + loopsize > blocksize)
return -EINVAL;
for (i = 0; i < loopsize; i++)
block[offset + i] = block[offset - i -1];
offset += loopsize;
}
/* modify loop pointers */
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_BIDIR_LOOP) {
sp->v.loopend += loopsize;
} else {
sp->v.loopstart += loopsize;
sp->v.loopend += loopsize;
}
/* add sample pointer */
sp->v.end += loopsize;
}
#endif
/* loopend -> sample end */
size = sp->v.size - loopend;
if (size < 0)
return -EINVAL;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
size *= 2;
if (snd_emu10k1_synth_copy_from_user(emu, sp->block, offset, data, size)) {
snd_emu10k1_synth_free(emu, sp->block);
sp->block = NULL;
return -EFAULT;
}
offset += size;
/* clear rest of samples (if any) */
if (offset < blocksize)
snd_emu10k1_synth_bzero(emu, sp->block, offset, blocksize - offset);
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_NO_BLANK) {
/* if no blank loop is attached in the sample, add it */
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_SINGLESHOT) {
sp->v.loopstart = sp->v.end + BLANK_LOOP_START;
sp->v.loopend = sp->v.end + BLANK_LOOP_END;
}
}
#if 0 /* not supported yet */
if (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_UNSIGNED) {
/* unsigned -> signed */
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS)) {
unsigned short *wblock = (unsigned short*)block;
for (i = 0; i < truesize; i++)
wblock[i] ^= 0x8000;
} else {
for (i = 0; i < truesize; i++)
block[i] ^= 0x80;
}
}
#endif
/* recalculate offset */
start_addr = BLANK_HEAD_SIZE * 2;
if (! (sp->v.mode_flags & SNDRV_SFNT_SAMPLE_8BITS))
start_addr >>= 1;
sp->v.start += start_addr;
sp->v.end += start_addr;
sp->v.loopstart += start_addr;
sp->v.loopend += start_addr;
return 0;
}
/*
* free a sample block
*/
int
snd_emu10k1_sample_free(struct snd_emux *rec, struct snd_sf_sample *sp,
struct snd_util_memhdr *hdr)
{
struct snd_emu10k1 *emu;
emu = rec->hw;
if (snd_BUG_ON(!sp || !hdr))
return -EINVAL;
if (sp->block) {
snd_emu10k1_synth_free(emu, sp->block);
sp->block = NULL;
}
return 0;
}