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path: root/sound/pci/emu10k1/emu10k1_patch.c
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Diffstat (limited to 'sound/pci/emu10k1/emu10k1_patch.c')
-rw-r--r--sound/pci/emu10k1/emu10k1_patch.c229
1 files changed, 229 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/emu10k1_patch.c b/sound/pci/emu10k1/emu10k1_patch.c
new file mode 100644
index 00000000..e10f027b
--- /dev/null
+++ b/sound/pci/emu10k1/emu10k1_patch.c
@@ -0,0 +1,229 @@
+/*
+ * Patch transfer callback for Emu10k1
+ *
+ * Copyright (C) 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
+ */
+/*
+ * 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) {
+ snd_printd("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) {
+ int tmp = sp->v.loopstart;
+ sp->v.loopstart = sp->v.loopend;
+ sp->v.loopend = tmp;
+ }
+
+ /* 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) {
+ snd_printd("emu10k1: 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 suppported 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;
+}
+
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