From f44ba092651aa75055e109e04b4164ea92ae7fdc Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 19 Jun 2006 21:53:48 +0000 Subject: big s/polyp/pulse/g git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/polypcore/sample-util.c | 405 -------------------------------------------- 1 file changed, 405 deletions(-) delete mode 100644 src/polypcore/sample-util.c (limited to 'src/polypcore/sample-util.c') diff --git a/src/polypcore/sample-util.c b/src/polypcore/sample-util.c deleted file mode 100644 index 7a75ce1c..00000000 --- a/src/polypcore/sample-util.c +++ /dev/null @@ -1,405 +0,0 @@ -/* $Id$ */ - -/*** - This file is part of polypaudio. - - polypaudio 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 of the License, - or (at your option) any later version. - - polypaudio 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 polypaudio; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - USA. -***/ - -#ifdef HAVE_CONFIG_H -#include -#endif - -#include -#include -#include -#include - -#include - -#include - -#include "sample-util.h" -#include "endianmacros.h" - -pa_memblock *pa_silence_memblock_new(const pa_sample_spec *spec, size_t length, pa_memblock_stat*s) { - assert(spec); - - if (length == 0) - length = pa_bytes_per_second(spec)/10; /* 100 ms */ - - return pa_silence_memblock(pa_memblock_new(length, s), spec); -} - -pa_memblock *pa_silence_memblock(pa_memblock* b, const pa_sample_spec *spec) { - assert(b && b->data && spec); - pa_silence_memory(b->data, b->length, spec); - return b; -} - -void pa_silence_memchunk(pa_memchunk *c, const pa_sample_spec *spec) { - assert(c && c->memblock && c->memblock->data && spec && c->length); - - pa_silence_memory((uint8_t*) c->memblock->data+c->index, c->length, spec); -} - -void pa_silence_memory(void *p, size_t length, const pa_sample_spec *spec) { - uint8_t c = 0; - assert(p && length && spec); - - switch (spec->format) { - case PA_SAMPLE_U8: - c = 0x80; - break; - case PA_SAMPLE_S16LE: - case PA_SAMPLE_S16BE: - case PA_SAMPLE_FLOAT32: - c = 0; - break; - case PA_SAMPLE_ALAW: - case PA_SAMPLE_ULAW: - c = 80; - break; - default: - assert(0); - } - - memset(p, c, length); -} - -size_t pa_mix( - const pa_mix_info streams[], - unsigned nstreams, - void *data, - size_t length, - const pa_sample_spec *spec, - const pa_cvolume *volume, - int mute) { - - assert(streams && data && length && spec); - - switch (spec->format) { - case PA_SAMPLE_S16NE:{ - size_t d; - unsigned channel = 0; - - for (d = 0;; d += sizeof(int16_t)) { - int32_t sum = 0; - - if (d >= length) - return d; - - if (!mute && volume->values[channel] != PA_VOLUME_MUTED) { - unsigned i; - - for (i = 0; i < nstreams; i++) { - int32_t v; - pa_volume_t cvolume = streams[i].volume.values[channel]; - - if (d >= streams[i].chunk.length) - return d; - - if (cvolume == PA_VOLUME_MUTED) - v = 0; - else { - v = *((int16_t*) ((uint8_t*) streams[i].chunk.memblock->data + streams[i].chunk.index + d)); - - if (cvolume != PA_VOLUME_NORM) - v = (int32_t) (v * pa_sw_volume_to_linear(cvolume)); - } - - sum += v; - } - - if (volume->values[channel] != PA_VOLUME_NORM) - sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel])); - - if (sum < -0x8000) sum = -0x8000; - if (sum > 0x7FFF) sum = 0x7FFF; - - } - - *((int16_t*) data) = sum; - data = (uint8_t*) data + sizeof(int16_t); - - if (++channel >= spec->channels) - channel = 0; - } - } - - case PA_SAMPLE_S16RE:{ - size_t d; - unsigned channel = 0; - - for (d = 0;; d += sizeof(int16_t)) { - int32_t sum = 0; - - if (d >= length) - return d; - - if (!mute && volume->values[channel] != PA_VOLUME_MUTED) { - unsigned i; - - for (i = 0; i < nstreams; i++) { - int32_t v; - pa_volume_t cvolume = streams[i].volume.values[channel]; - - if (d >= streams[i].chunk.length) - return d; - - if (cvolume == PA_VOLUME_MUTED) - v = 0; - else { - v = INT16_SWAP(*((int16_t*) ((uint8_t*) streams[i].chunk.memblock->data + streams[i].chunk.index + d))); - - if (cvolume != PA_VOLUME_NORM) - v = (int32_t) (v * pa_sw_volume_to_linear(cvolume)); - } - - sum += v; - } - - if (volume->values[channel] != PA_VOLUME_NORM) - sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel])); - - if (sum < -0x8000) sum = -0x8000; - if (sum > 0x7FFF) sum = 0x7FFF; - - } - - *((int16_t*) data) = INT16_SWAP(sum); - data = (uint8_t*) data + sizeof(int16_t); - - if (++channel >= spec->channels) - channel = 0; - } - } - - case PA_SAMPLE_U8: { - size_t d; - unsigned channel = 0; - - for (d = 0;; d ++) { - int32_t sum = 0; - - if (d >= length) - return d; - - if (!mute && volume->values[channel] != PA_VOLUME_MUTED) { - unsigned i; - - for (i = 0; i < nstreams; i++) { - int32_t v; - pa_volume_t cvolume = streams[i].volume.values[channel]; - - if (d >= streams[i].chunk.length) - return d; - - if (cvolume == PA_VOLUME_MUTED) - v = 0; - else { - v = (int32_t) *((uint8_t*) streams[i].chunk.memblock->data + streams[i].chunk.index + d) - 0x80; - - if (cvolume != PA_VOLUME_NORM) - v = (int32_t) (v * pa_sw_volume_to_linear(cvolume)); - } - - sum += v; - } - - if (volume->values[channel] != PA_VOLUME_NORM) - sum = (int32_t) (sum * pa_sw_volume_to_linear(volume->values[channel])); - - if (sum < -0x80) sum = -0x80; - if (sum > 0x7F) sum = 0x7F; - - } - - *((uint8_t*) data) = (uint8_t) (sum + 0x80); - data = (uint8_t*) data + 1; - - if (++channel >= spec->channels) - channel = 0; - } - } - - case PA_SAMPLE_FLOAT32NE: { - size_t d; - unsigned channel = 0; - - for (d = 0;; d += sizeof(float)) { - float sum = 0; - - if (d >= length) - return d; - - if (!mute && volume->values[channel] != PA_VOLUME_MUTED) { - unsigned i; - - for (i = 0; i < nstreams; i++) { - float v; - pa_volume_t cvolume = streams[i].volume.values[channel]; - - if (d >= streams[i].chunk.length) - return d; - - if (cvolume == PA_VOLUME_MUTED) - v = 0; - else { - v = *((float*) ((uint8_t*) streams[i].chunk.memblock->data + streams[i].chunk.index + d)); - - if (cvolume != PA_VOLUME_NORM) - v *= pa_sw_volume_to_linear(cvolume); - } - - sum += v; - } - - if (volume->values[channel] != PA_VOLUME_NORM) - sum *= pa_sw_volume_to_linear(volume->values[channel]); - } - - *((float*) data) = sum; - data = (uint8_t*) data + sizeof(float); - - if (++channel >= spec->channels) - channel = 0; - } - } - - default: - pa_log_error(__FILE__": ERROR: Unable to mix audio data of format %s.", pa_sample_format_to_string(spec->format)); - abort(); - } -} - - -void pa_volume_memchunk(pa_memchunk*c, const pa_sample_spec *spec, const pa_cvolume *volume) { - assert(c && spec && (c->length % pa_frame_size(spec) == 0)); - assert(volume); - - if (pa_cvolume_channels_equal_to(volume, PA_VOLUME_NORM)) - return; - - if (pa_cvolume_channels_equal_to(volume, PA_VOLUME_MUTED)) { - pa_silence_memchunk(c, spec); - return; - } - - switch (spec->format) { - case PA_SAMPLE_S16NE: { - int16_t *d; - size_t n; - unsigned channel; - double linear[PA_CHANNELS_MAX]; - - for (channel = 0; channel < spec->channels; channel++) - linear[channel] = pa_sw_volume_to_linear(volume->values[channel]); - - for (channel = 0, d = (int16_t*) ((uint8_t*) c->memblock->data+c->index), n = c->length/sizeof(int16_t); n > 0; d++, n--) { - int32_t t = (int32_t)(*d); - - t = (int32_t) (t * linear[channel]); - - if (t < -0x8000) t = -0x8000; - if (t > 0x7FFF) t = 0x7FFF; - - *d = (int16_t) t; - - if (++channel >= spec->channels) - channel = 0; - } - break; - } - - case PA_SAMPLE_S16RE: { - int16_t *d; - size_t n; - unsigned channel; - double linear[PA_CHANNELS_MAX]; - - for (channel = 0; channel < spec->channels; channel++) - linear[channel] = pa_sw_volume_to_linear(volume->values[channel]); - - for (channel = 0, d = (int16_t*) ((uint8_t*) c->memblock->data+c->index), n = c->length/sizeof(int16_t); n > 0; d++, n--) { - int32_t t = (int32_t)(INT16_SWAP(*d)); - - t = (int32_t) (t * linear[channel]); - - if (t < -0x8000) t = -0x8000; - if (t > 0x7FFF) t = 0x7FFF; - - *d = INT16_SWAP((int16_t) t); - - if (++channel >= spec->channels) - channel = 0; - } - - break; - } - - case PA_SAMPLE_U8: { - uint8_t *d; - size_t n; - unsigned channel = 0; - - for (d = (uint8_t*) c->memblock->data + c->index, n = c->length; n > 0; d++, n--) { - int32_t t = (int32_t) *d - 0x80; - - t = (int32_t) (t * pa_sw_volume_to_linear(volume->values[channel])); - - if (t < -0x80) t = -0x80; - if (t > 0x7F) t = 0x7F; - - *d = (uint8_t) (t + 0x80); - - if (++channel >= spec->channels) - channel = 0; - } - break; - } - - case PA_SAMPLE_FLOAT32NE: { - float *d; - int skip; - unsigned n; - unsigned channel; - - d = (float*) ((uint8_t*) c->memblock->data + c->index); - skip = spec->channels * sizeof(float); - n = c->length/sizeof(float)/spec->channels; - - for (channel = 0; channel < spec->channels ; channel ++) { - float v, *t; - - if (volume->values[channel] == PA_VOLUME_NORM) - continue; - - v = (float) pa_sw_volume_to_linear(volume->values[channel]); - - t = d + channel; - oil_scalarmult_f32(t, skip, t, skip, &v, n); - } - break; - } - - default: - pa_log_error(__FILE__": ERROR: Unable to change volume of format %s.", - pa_sample_format_to_string(spec->format)); - abort(); - } -} - -- cgit