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8fa81a93c9
move code to function pa_mult_s16_volume() in sample-util.h use 64 bit integers on 64 bit platforms (it's faster) on i5, 2.5GHz (64-bit) Running suite(s): Mult-s16 32 bit mult: 1272300 usec (avg: 12723, min = 12533, max = 18749, stddev = 620.48). 64 bit mult: 852241 usec (avg: 8522.41, min = 8420, max = 9148, stddev = 109.388). 100%: Checks: 1, Failures: 0, Errors: 0 on Pentium D, 3.4GHz (32-bit) Running suite(s): Mult-s16 32 bit mult: 2228504 usec (avg: 22285, min = 18775, max = 29648, stddev = 3865.59). 64 bit mult: 5546861 usec (avg: 55468.6, min = 55028, max = 64924, stddev = 978.981). 100%: Checks: 1, Failures: 0, Errors: 0 on TI DM3730, Cortex-A8, 800MHz (32-bit) Running suite(s): Mult-s16 32 bit mult: 23708900 usec (avg: 237089, min = 191864, max = 557312, stddev = 77503.6). 64 bit mult: 22190039 usec (avg: 221900, min = 177978, max = 480469, stddev = 68520.5). 100%: Checks: 1, Failures: 0, Errors: 0 there is a test program called mult-s16-test which checks that the functions compute the same results, and compares runtime Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
148 lines
6.9 KiB
C
148 lines
6.9 KiB
C
#ifndef foosampleutilhfoo
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#define foosampleutilhfoo
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#include <inttypes.h>
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#include <limits.h>
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#include <pulse/gccmacro.h>
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#include <pulse/sample.h>
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#include <pulse/volume.h>
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#include <pulse/channelmap.h>
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#include <pulsecore/memblock.h>
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#include <pulsecore/memchunk.h>
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typedef struct pa_silence_cache {
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pa_memblock* blocks[PA_SAMPLE_MAX];
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} pa_silence_cache;
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void pa_silence_cache_init(pa_silence_cache *cache);
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void pa_silence_cache_done(pa_silence_cache *cache);
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void *pa_silence_memory(void *p, size_t length, const pa_sample_spec *spec);
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pa_memchunk* pa_silence_memchunk(pa_memchunk *c, const pa_sample_spec *spec);
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pa_memblock* pa_silence_memblock(pa_memblock *b, const pa_sample_spec *spec);
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pa_memchunk* pa_silence_memchunk_get(pa_silence_cache *cache, pa_mempool *pool, pa_memchunk* ret, const pa_sample_spec *spec, size_t length);
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size_t pa_frame_align(size_t l, const pa_sample_spec *ss) PA_GCC_PURE;
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pa_bool_t pa_frame_aligned(size_t l, const pa_sample_spec *ss) PA_GCC_PURE;
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void pa_interleave(const void *src[], unsigned channels, void *dst, size_t ss, unsigned n);
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void pa_deinterleave(const void *src, void *dst[], unsigned channels, size_t ss, unsigned n);
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void pa_sample_clamp(pa_sample_format_t format, void *dst, size_t dstr, const void *src, size_t sstr, unsigned n);
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static inline int32_t pa_mult_s16_volume(int16_t v, int32_t cv) {
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#if __WORDSIZE == 64 || ((ULONG_MAX) > (UINT_MAX))
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/* Multiply with 64 bit integers on 64 bit platforms */
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return (v * (int64_t) cv) >> 16;
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#else
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/* Multiplying the 32 bit volume factor with the
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* 16 bit sample might result in an 48 bit value. We
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* want to do without 64 bit integers and hence do
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* the multiplication independently for the HI and
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* LO part of the volume. */
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int32_t hi = cv >> 16;
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int32_t lo = cv & 0xFFFF;
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return ((v * lo) >> 16) + (v * hi);
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#endif
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}
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pa_usec_t pa_bytes_to_usec_round_up(uint64_t length, const pa_sample_spec *spec);
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size_t pa_usec_to_bytes_round_up(pa_usec_t t, const pa_sample_spec *spec);
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void pa_memchunk_dump_to_file(pa_memchunk *c, const char *fn);
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void pa_memchunk_sine(pa_memchunk *c, pa_mempool *pool, unsigned rate, unsigned freq);
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typedef void (*pa_do_volume_func_t) (void *samples, const void *volumes, unsigned channels, unsigned length);
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pa_do_volume_func_t pa_get_volume_func(pa_sample_format_t f);
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void pa_set_volume_func(pa_sample_format_t f, pa_do_volume_func_t func);
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size_t pa_convert_size(size_t size, const pa_sample_spec *from, const pa_sample_spec *to);
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#define PA_CHANNEL_POSITION_MASK_LEFT \
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(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_SIDE_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_LEFT)) \
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#define PA_CHANNEL_POSITION_MASK_RIGHT \
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(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_SIDE_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_RIGHT))
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#define PA_CHANNEL_POSITION_MASK_CENTER \
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(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_CENTER))
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#define PA_CHANNEL_POSITION_MASK_FRONT \
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(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_CENTER))
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#define PA_CHANNEL_POSITION_MASK_REAR \
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(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_CENTER))
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#define PA_CHANNEL_POSITION_MASK_SIDE_OR_TOP_CENTER \
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(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_SIDE_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_SIDE_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_CENTER))
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#define PA_CHANNEL_POSITION_MASK_TOP \
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(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_CENTER) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_LEFT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_RIGHT) \
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| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_CENTER))
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#define PA_CHANNEL_POSITION_MASK_ALL \
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((pa_channel_position_mask_t) (PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_MAX)-1))
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#endif
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