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Thu, 04 Apr 2024 12:00:51 +0200 Received: by ugly.fritz.box (masqmail 0.3.6-dev, from userid 1000) id 1rsJto-RFN-00; Thu, 04 Apr 2024 12:00:48 +0200 From: Oswald Buddenhagen To: alsa-devel@alsa-project.org Cc: Takashi Iwai , Jaroslav Kysela , Arthur Marsh Subject: [PATCH v2 05/17] ALSA: emu10k1: prune vestiges of SNDRV_SFNT_SAMPLE_{BIDIR,REVERSE}_LOOP support Date: Thu, 4 Apr 2024 12:00:36 +0200 Message-ID: <20240404100048.819674-6-oswald.buddenhagen@gmx.de> X-Mailer: git-send-email 2.42.0.419.g70bf8a5751 In-Reply-To: <20240404100048.819674-1-oswald.buddenhagen@gmx.de> References: <20240404100048.819674-1-oswald.buddenhagen@gmx.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:ESkvr/u4kvFeDcA3F2nAvwudrXYtfhJK34kNYdS2pmpIgFwkF1d Jb/rXopYDzGFksZ/yMUXzxjtKv+8HHTrUBh5P8Pb12NnELw3/y0W/2E9HUjFD4pufhvBqiJ aGYpWGCyh6oQZFd4CUIRl8JsFBwpNBBCTB5eqsRhTc7kMCUwu5CzYjzMrGvCQZsSGYR+LVW m99J4FWVH0JUOcXpp7N0A== UI-OutboundReport: notjunk:1;M01:P0:UfHc/XmSlUQ=;e0gyY8qJMXf9Xr2ShsupMA7GQYu 47DHqAjs3ogsF0bKcswx2acoo+ddodDvSz9hhGSfWPk5RFguc5Y4KZWyi1ygfaojMts45MdE2 0EUXCFMu7Xvat/BxjZFWT+g7/PG7LCS2HEvUtqguuBQrSe66u3jpR/glcKgfsq0rFf4a++NtM aCqDGHYhKOmOPxc4Q8sI/RfQIY0KlkDJy9WxyPWOTSDTwcJSt8Egv9N9L5VG0cERNQV+wNzEq M/M9d5O++FnToVO8oN0s11WoBr3XFOotjb9WUOpWOmWnanqPb0KcpoLkJjRajQqZA/dwFA1oS LWt7nm+vJqc+YiHgoEUkncO+veO3AmUtAz6DzXDRVqI622hYXVafvG4IicyaMjIOJ5m6Bb8R2 YdEqK+JWAnVR2bH6wTeEWCDywBw3B/srCDREhNeuC8qBMcRUHxjrWsLrYoBl7vhx+YnSrtxMv NkGvotFZh2UMm3eJnZSgT9vQwC2h9EnLp/z5vwpOglX1uWf9R/zCOo9dPWwXQxj2+ClH9Iecq IG9rWvQq7Nbh302FXsnqg3r0Uyqd+cSvKHeDoQkV1JoyjT65P3bZZmn2afUb6V3zYRqQEldXF 9EOR+P/Yp4rF9BTpLnSvvPqhDefH2gJNV1V67mqrCxVKzvKVAI++XME8ZQs7Kf2ISSyCrc3qf j+MVYPw+mlyoYPstiRIW7SWgx2BbHiX5uUCqLgbeEV6dKSANudDgDQV/WVkwEXIV1h+Q3ovZV 0fBGoJhuhDsmlEMh3ChH8VSDFIGvZ/SC+NDbAqWnqyKgkgdp1iQAo85O8XbBWib3bILasDGj9 gY3KuQI30E3ost61G7xNIkon7OwWasM9Cd5CR6jhfKcHo= Message-ID-Hash: IYCARJ3H76JPHJUEKSBPCY6LZUQ2B5EC X-Message-ID-Hash: IYCARJ3H76JPHJUEKSBPCY6LZUQ2B5EC X-MailFrom: oswald.buddenhagen@gmx.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: This is required only to implement WAVE_BIDIR_LOOP and WAVE_LOOP_BACK in the GUS patch loader. It has not worked on emu10k1 since before ALSA hit mainline, yet nobody appears to have complained. And as it isn't super easy to implement, just admit defeat and clean up the code. If somebody wanted to resurrect the feature, the emu8k driver could serve as a template, but the code would be quite different. But arguably, this should be done in user space in the first place, as this doesn't represent a hardware feature (somewhat ironically, the actual GUS driver has no synth support, and therefore no GUS patch loader). Note that instead of properly rejecting affected samples, we continue to just pretend that the feature wasn't requested. This is extremely questionable behavior, but avoids that possibly unused instruments suddenly prevent loading the entire file, which would break backwards compatibility. But at least we log a warning now. Signed-off-by: Oswald Buddenhagen --- sound/pci/emu10k1/emu10k1_patch.c | 73 ++++--------------------------- 1 file changed, 8 insertions(+), 65 deletions(-) -- 2.42.0.419.g70bf8a5751 diff --git a/sound/pci/emu10k1/emu10k1_patch.c b/sound/pci/emu10k1/emu10k1_patch.c index 89890f24509f..49214c226808 100644 --- a/sound/pci/emu10k1/emu10k1_patch.c +++ b/sound/pci/emu10k1/emu10k1_patch.c @@ -28,8 +28,6 @@ snd_emu10k1_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp, { int offset; int truesize, size, blocksize; - __maybe_unused int loopsize; - int loopend, sampleend; unsigned int start_addr; struct snd_emu10k1 *emu; @@ -43,32 +41,24 @@ snd_emu10k1_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp, return 0; } + if (sp->v.mode_flags & (SNDRV_SFNT_SAMPLE_BIDIR_LOOP | SNDRV_SFNT_SAMPLE_REVERSE_LOOP)) { + /* should instead return -ENOTSUPP; but compatibility */ + printk(KERN_WARNING "Emu10k1 wavetable patch %d with unsupported loop feature\n", + sp->v.sample); + } + /* 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; @@ -96,65 +86,18 @@ snd_emu10k1_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp, snd_emu10k1_synth_bzero(emu, sp->block, offset, size); offset += size; - /* copy start->loopend */ - size = loopend; + /* copy provided samples */ + size = sp->v.size; 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)