From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- sound/pci/emu10k1/emu10k1_patch.c | 223 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 223 insertions(+) create mode 100644 sound/pci/emu10k1/emu10k1_patch.c (limited to 'sound/pci/emu10k1/emu10k1_patch.c') diff --git a/sound/pci/emu10k1/emu10k1_patch.c b/sound/pci/emu10k1/emu10k1_patch.c new file mode 100644 index 000000000000..4df668eb32b4 --- /dev/null +++ b/sound/pci/emu10k1/emu10k1_patch.c @@ -0,0 +1,223 @@ +/* + * Patch transfer callback for Emu10k1 + * + * Copyright (C) 2000 Takashi iwai + * + * 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(snd_emux_t *rec, snd_sf_sample_t *sp, + snd_util_memhdr_t *hdr, const void __user *data, long count) +{ + int offset; + int truesize, size, loopsize, blocksize; + int loopend, sampleend; + unsigned int start_addr; + emu10k1_t *emu; + + emu = rec->hw; + snd_assert(sp != NULL, return -EINVAL); + snd_assert(hdr != NULL, 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; + snd_assert(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; + snd_assert(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; + snd_assert(offset + loopsize*2 <= blocksize, return -EINVAL); + for (i = 0; i < loopsize; i++) + wblock[woffset + i] = wblock[woffset - i -1]; + offset += loopsize * 2; + } else { + snd_assert(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; + snd_assert(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(snd_emux_t *rec, snd_sf_sample_t *sp, + snd_util_memhdr_t *hdr) +{ + emu10k1_t *emu; + + emu = rec->hw; + snd_assert(sp != NULL, return -EINVAL); + snd_assert(hdr != NULL, return -EINVAL); + + if (sp->block) { + snd_emu10k1_synth_free(emu, sp->block); + sp->block = NULL; + } + return 0; +} + -- cgit