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-rw-r--r--src/pulsecore/svolume_sse.c263
1 files changed, 263 insertions, 0 deletions
diff --git a/src/pulsecore/svolume_sse.c b/src/pulsecore/svolume_sse.c
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--- /dev/null
+++ b/src/pulsecore/svolume_sse.c
@@ -0,0 +1,263 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+ Copyright 2009 Wim Taymans <wim.taymans@collabora.co.uk>
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 of the License,
+ or (at your option) any later version.
+
+ PulseAudio 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 Lesser General Public License
+ along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/rtclock.h>
+
+#include <pulsecore/random.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/endianmacros.h>
+
+#include "cpu-x86.h"
+
+#include "sample-util.h"
+
+#if (!defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && defined (__i386__)) || defined (__amd64__)
+
+#define VOLUME_32x16(s,v) /* .. | vh | vl | */ \
+ " pxor %%xmm4, %%xmm4 \n\t" /* .. | 0 | 0 | */ \
+ " punpcklwd %%xmm4, "#s" \n\t" /* .. | 0 | p0 | */ \
+ " pcmpgtw "#s", %%xmm4 \n\t" /* .. | 0 | s(p0) | */ \
+ " pand "#v", %%xmm4 \n\t" /* .. | 0 | (vl) | */ \
+ " movdqa "#s", %%xmm5 \n\t" \
+ " pmulhuw "#v", "#s" \n\t" /* .. | 0 | vl*p0 | */ \
+ " psubd %%xmm4, "#s" \n\t" /* .. | 0 | vl*p0 | + sign correct */ \
+ " psrld $16, "#v" \n\t" /* .. | 0 | vh | */ \
+ " pmaddwd %%xmm5, "#v" \n\t" /* .. | p0 * vh | */ \
+ " paddd "#s", "#v" \n\t" /* .. | p0 * v0 | */ \
+ " packssdw "#v", "#v" \n\t" /* .. | p1*v1 | p0*v0 | */
+
+#define MOD_ADD(a,b) \
+ " add "#a", %3 \n\t" /* channel += inc */ \
+ " mov %3, %4 \n\t" \
+ " sub "#b", %4 \n\t" /* tmp = channel - channels */ \
+ " cmovae %4, %3 \n\t" /* if (tmp >= 0) channel = tmp */
+
+/* swap 16 bits */
+#define SWAP_16(s) \
+ " movdqa "#s", %%xmm4 \n\t" /* .. | h l | */ \
+ " psrlw $8, %%xmm4 \n\t" /* .. | 0 h | */ \
+ " psllw $8, "#s" \n\t" /* .. | l 0 | */ \
+ " por %%xmm4, "#s" \n\t" /* .. | l h | */
+
+/* swap 2 registers 16 bits for better pairing */
+#define SWAP_16_2(s1,s2) \
+ " movdqa "#s1", %%xmm4 \n\t" /* .. | h l | */ \
+ " movdqa "#s2", %%xmm5 \n\t" \
+ " psrlw $8, %%xmm4 \n\t" /* .. | 0 h | */ \
+ " psrlw $8, %%xmm5 \n\t" \
+ " psllw $8, "#s1" \n\t" /* .. | l 0 | */ \
+ " psllw $8, "#s2" \n\t" \
+ " por %%xmm4, "#s1" \n\t" /* .. | l h | */ \
+ " por %%xmm5, "#s2" \n\t"
+
+static int channel_overread_table[8] = {8,8,8,12,8,10,12,14};
+
+static void pa_volume_s16ne_sse2(int16_t *samples, const int32_t *volumes, unsigned channels, unsigned length) {
+ pa_reg_x86 channel, temp;
+
+ /* Channels must be at least 8 and always a multiple of the original number.
+ * This is also the max amount we overread the volume array, which should
+ * have enough padding. */
+ if (channels < 8)
+ channels = channel_overread_table[channels];
+
+ __asm__ __volatile__ (
+ " xor %3, %3 \n\t"
+ " sar $1, %2 \n\t" /* length /= sizeof (int16_t) */
+
+ " test $1, %2 \n\t" /* check for odd samples */
+ " je 2f \n\t"
+
+ " movd (%q1, %3, 4), %%xmm0 \n\t" /* | v0h | v0l | */
+ " movw (%0), %w4 \n\t" /* .. | p0 | */
+ " movd %4, %%xmm1 \n\t"
+ VOLUME_32x16 (%%xmm1, %%xmm0)
+ " movd %%xmm0, %4 \n\t" /* .. | p0*v0 | */
+ " movw %w4, (%0) \n\t"
+ " add $2, %0 \n\t"
+ MOD_ADD ($1, %5)
+
+ "2: \n\t"
+ " sar $1, %2 \n\t" /* prepare for processing 2 samples at a time */
+ " test $1, %2 \n\t"
+ " je 4f \n\t"
+
+ "3: \n\t" /* do samples in groups of 2 */
+ " movq (%q1, %3, 4), %%xmm0 \n\t" /* | v1h | v1l | v0h | v0l | */
+ " movd (%0), %%xmm1 \n\t" /* .. | p1 | p0 | */
+ VOLUME_32x16 (%%xmm1, %%xmm0)
+ " movd %%xmm0, (%0) \n\t" /* .. | p1*v1 | p0*v0 | */
+ " add $4, %0 \n\t"
+ MOD_ADD ($2, %5)
+
+ "4: \n\t"
+ " sar $1, %2 \n\t" /* prepare for processing 4 samples at a time */
+ " test $1, %2 \n\t"
+ " je 6f \n\t"
+
+ /* FIXME, we can do aligned access of the volume values if we can guarantee
+ * that the array is 16 bytes aligned, we probably have to do the odd values
+ * after this then. */
+ "5: \n\t" /* do samples in groups of 4 */
+ " movdqu (%q1, %3, 4), %%xmm0 \n\t" /* | v3h | v3l .. v0h | v0l | */
+ " movq (%0), %%xmm1 \n\t" /* .. | p3 .. p0 | */
+ VOLUME_32x16 (%%xmm1, %%xmm0)
+ " movq %%xmm0, (%0) \n\t" /* .. | p3*v3 .. p0*v0 | */
+ " add $8, %0 \n\t"
+ MOD_ADD ($4, %5)
+
+ "6: \n\t"
+ " sar $1, %2 \n\t" /* prepare for processing 8 samples at a time */
+ " cmp $0, %2 \n\t"
+ " je 8f \n\t"
+
+ "7: \n\t" /* do samples in groups of 8 */
+ " movdqu (%q1, %3, 4), %%xmm0 \n\t" /* | v3h | v3l .. v0h | v0l | */
+ " movdqu 16(%q1, %3, 4), %%xmm2 \n\t" /* | v7h | v7l .. v4h | v4l | */
+ " movq (%0), %%xmm1 \n\t" /* .. | p3 .. p0 | */
+ " movq 8(%0), %%xmm3 \n\t" /* .. | p7 .. p4 | */
+ VOLUME_32x16 (%%xmm1, %%xmm0)
+ VOLUME_32x16 (%%xmm3, %%xmm2)
+ " movq %%xmm0, (%0) \n\t" /* .. | p3*v3 .. p0*v0 | */
+ " movq %%xmm2, 8(%0) \n\t" /* .. | p7*v7 .. p4*v4 | */
+ " add $16, %0 \n\t"
+ MOD_ADD ($8, %5)
+ " dec %2 \n\t"
+ " jne 7b \n\t"
+ "8: \n\t"
+
+ : "+r" (samples), "+r" (volumes), "+r" (length), "=&D" (channel), "=&r" (temp)
+#if defined (__i386__)
+ : "m" (channels)
+#else
+ : "r" ((pa_reg_x86)channels)
+#endif
+ : "cc"
+ );
+}
+
+static void pa_volume_s16re_sse2(int16_t *samples, const int32_t *volumes, unsigned channels, unsigned length) {
+ pa_reg_x86 channel, temp;
+
+ /* Channels must be at least 8 and always a multiple of the original number.
+ * This is also the max amount we overread the volume array, which should
+ * have enough padding. */
+ if (channels < 8)
+ channels = channel_overread_table[channels];
+
+ __asm__ __volatile__ (
+ " xor %3, %3 \n\t"
+ " sar $1, %2 \n\t" /* length /= sizeof (int16_t) */
+
+ " test $1, %2 \n\t" /* check for odd samples */
+ " je 2f \n\t"
+
+ " movd (%q1, %3, 4), %%xmm0 \n\t" /* | v0h | v0l | */
+ " movw (%0), %w4 \n\t" /* .. | p0 | */
+ " rorw $8, %w4 \n\t"
+ " movd %4, %%xmm1 \n\t"
+ VOLUME_32x16 (%%xmm1, %%xmm0)
+ " movd %%xmm0, %4 \n\t" /* .. | p0*v0 | */
+ " rorw $8, %w4 \n\t"
+ " movw %w4, (%0) \n\t"
+ " add $2, %0 \n\t"
+ MOD_ADD ($1, %5)
+
+ "2: \n\t"
+ " sar $1, %2 \n\t" /* prepare for processing 2 samples at a time */
+ " test $1, %2 \n\t"
+ " je 4f \n\t"
+
+ "3: \n\t" /* do samples in groups of 2 */
+ " movq (%q1, %3, 4), %%xmm0 \n\t" /* | v1h | v1l | v0h | v0l | */
+ " movd (%0), %%xmm1 \n\t" /* .. | p1 | p0 | */
+ SWAP_16 (%%xmm1)
+ VOLUME_32x16 (%%xmm1, %%xmm0)
+ SWAP_16 (%%xmm0)
+ " movd %%xmm0, (%0) \n\t" /* .. | p1*v1 | p0*v0 | */
+ " add $4, %0 \n\t"
+ MOD_ADD ($2, %5)
+
+ "4: \n\t"
+ " sar $1, %2 \n\t" /* prepare for processing 4 samples at a time */
+ " test $1, %2 \n\t"
+ " je 6f \n\t"
+
+ /* FIXME, we can do aligned access of the volume values if we can guarantee
+ * that the array is 16 bytes aligned, we probably have to do the odd values
+ * after this then. */
+ "5: \n\t" /* do samples in groups of 4 */
+ " movdqu (%q1, %3, 4), %%xmm0 \n\t" /* | v3h | v3l .. v0h | v0l | */
+ " movq (%0), %%xmm1 \n\t" /* .. | p3 .. p0 | */
+ SWAP_16 (%%xmm1)
+ VOLUME_32x16 (%%xmm1, %%xmm0)
+ SWAP_16 (%%xmm0)
+ " movq %%xmm0, (%0) \n\t" /* .. | p3*v3 .. p0*v0 | */
+ " add $8, %0 \n\t"
+ MOD_ADD ($4, %5)
+
+ "6: \n\t"
+ " sar $1, %2 \n\t" /* prepare for processing 8 samples at a time */
+ " cmp $0, %2 \n\t"
+ " je 8f \n\t"
+
+ "7: \n\t" /* do samples in groups of 8 */
+ " movdqu (%q1, %3, 4), %%xmm0 \n\t" /* | v3h | v3l .. v0h | v0l | */
+ " movdqu 16(%q1, %3, 4), %%xmm2 \n\t" /* | v7h | v7l .. v4h | v4l | */
+ " movq (%0), %%xmm1 \n\t" /* .. | p3 .. p0 | */
+ " movq 8(%0), %%xmm3 \n\t" /* .. | p7 .. p4 | */
+ SWAP_16_2 (%%xmm1, %%xmm3)
+ VOLUME_32x16 (%%xmm1, %%xmm0)
+ VOLUME_32x16 (%%xmm3, %%xmm2)
+ SWAP_16_2 (%%xmm0, %%xmm2)
+ " movq %%xmm0, (%0) \n\t" /* .. | p3*v3 .. p0*v0 | */
+ " movq %%xmm2, 8(%0) \n\t" /* .. | p7*v7 .. p4*v4 | */
+ " add $16, %0 \n\t"
+ MOD_ADD ($8, %5)
+ " dec %2 \n\t"
+ " jne 7b \n\t"
+ "8: \n\t"
+
+ : "+r" (samples), "+r" (volumes), "+r" (length), "=&D" (channel), "=&r" (temp)
+#if defined (__i386__)
+ : "m" (channels)
+#else
+ : "r" ((pa_reg_x86)channels)
+#endif
+ : "cc"
+ );
+}
+
+#endif /* (!defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && defined (__i386__)) || defined (__amd64__) */
+
+void pa_volume_func_init_sse(pa_cpu_x86_flag_t flags) {
+#if (!defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && defined (__i386__)) || defined (__amd64__)
+ if (flags & PA_CPU_X86_SSE2) {
+ pa_log_info("Initialising SSE2 optimized volume functions.");
+
+ pa_set_volume_func(PA_SAMPLE_S16NE, (pa_do_volume_func_t) pa_volume_s16ne_sse2);
+ pa_set_volume_func(PA_SAMPLE_S16RE, (pa_do_volume_func_t) pa_volume_s16re_sse2);
+ }
+#endif /* (!defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && defined (__i386__)) || defined (__amd64__) */
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 08:27:20 +0000