From b0a68fd09ff6fa62accdc29307c5f445cc054a94 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 9 Nov 2007 17:11:45 +0000 Subject: optimize mixing code a bit. Add mixers for S32LE, S32BE, ULAW, ALAW and FLOAT32BE. Add volume adjusters for FLOAT32BE, ALAW, ULAW. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2041 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/tests/mix-test.c | 261 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 261 insertions(+) create mode 100644 src/tests/mix-test.c (limited to 'src/tests/mix-test.c') diff --git a/src/tests/mix-test.c b/src/tests/mix-test.c new file mode 100644 index 00000000..d07b1b0c --- /dev/null +++ b/src/tests/mix-test.c @@ -0,0 +1,261 @@ +/* $Id: resampler-test.c 2037 2007-11-09 02:45:07Z lennart $ */ + +/*** + This file is part of PulseAudio. + + 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 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, 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 +#include + +#include + +static float swap_float(float a) { + uint32_t *b = (uint32_t*) &a; + *b = PA_UINT32_SWAP(*b); + return a; +} + +static void dump_block(const pa_sample_spec *ss, const pa_memchunk *chunk) { + void *d; + unsigned i; + + d = pa_memblock_acquire(chunk->memblock); + + switch (ss->format) { + + case PA_SAMPLE_U8: + case PA_SAMPLE_ULAW: + case PA_SAMPLE_ALAW: { + uint8_t *u = d; + + for (i = 0; i < chunk->length / pa_frame_size(ss); i++) + printf("0x%02x ", *(u++)); + + break; + } + + case PA_SAMPLE_S16NE: + case PA_SAMPLE_S16RE: { + uint16_t *u = d; + + for (i = 0; i < chunk->length / pa_frame_size(ss); i++) + printf("0x%04x ", *(u++)); + + break; + } + + case PA_SAMPLE_S32NE: + case PA_SAMPLE_S32RE: { + uint32_t *u = d; + + for (i = 0; i < chunk->length / pa_frame_size(ss); i++) + printf("0x%08x ", *(u++)); + + break; + } + + case PA_SAMPLE_FLOAT32NE: + case PA_SAMPLE_FLOAT32RE: { + float *u = d; + + for (i = 0; i < chunk->length / pa_frame_size(ss); i++) { + printf("%1.5f ", ss->format == PA_SAMPLE_FLOAT32NE ? *u : swap_float(*u)); + u++; + } + + break; + } + + default: + pa_assert_not_reached(); + } + + printf("\n"); + + pa_memblock_release(chunk->memblock); +} + +static pa_memblock* generate_block(pa_mempool *pool, const pa_sample_spec *ss) { + pa_memblock *r; + void *d; + unsigned i; + + pa_assert_se(r = pa_memblock_new(pool, pa_frame_size(ss) * 10)); + d = pa_memblock_acquire(r); + + switch (ss->format) { + + case PA_SAMPLE_U8: + case PA_SAMPLE_ULAW: + case PA_SAMPLE_ALAW: { + uint8_t *u = d; + + u[0] = 0x00; + u[1] = 0xFF; + u[2] = 0x7F; + u[3] = 0x80; + u[4] = 0x9f; + u[5] = 0x3f; + u[6] = 0x1; + u[7] = 0xF0; + u[8] = 0x20; + u[9] = 0x21; + break; + } + + case PA_SAMPLE_S16NE: + case PA_SAMPLE_S16RE: { + uint16_t *u = d; + + u[0] = 0x0000; + u[1] = 0xFFFF; + u[2] = 0x7FFF; + u[3] = 0x8000; + u[4] = 0x9fff; + u[5] = 0x3fff; + u[6] = 0x1; + u[7] = 0xF000; + u[8] = 0x20; + u[9] = 0x21; + break; + } + + case PA_SAMPLE_S32NE: + case PA_SAMPLE_S32RE: { + uint32_t *u = d; + + u[0] = 0x00000001; + u[1] = 0xFFFF0002; + u[2] = 0x7FFF0003; + u[3] = 0x80000004; + u[4] = 0x9fff0005; + u[5] = 0x3fff0006; + u[6] = 0x10007; + u[7] = 0xF0000008; + u[8] = 0x200009; + u[9] = 0x21000A; + break; + } + + case PA_SAMPLE_FLOAT32NE: + case PA_SAMPLE_FLOAT32RE: { + float *u = d; + + u[0] = 0.0; + u[1] = -1.0; + u[2] = 1.0; + u[3] = 4711; + u[4] = 0.222; + u[5] = 0.33; + u[6] = -.3; + u[7] = 99; + u[8] = -0.555; + u[9] = -.123; + + if (ss->format == PA_SAMPLE_FLOAT32RE) + for (i = 0; i < 10; i++) + u[i] = swap_float(u[i]); + + break; + } + + default: + pa_assert_not_reached(); + } + + pa_memblock_release(r); + + return r; +} + +int main(int argc, char *argv[]) { + pa_mempool *pool; + pa_sample_spec a; + pa_cvolume v; + + oil_init(); + pa_log_set_maximal_level(PA_LOG_DEBUG); + + pa_assert_se(pool = pa_mempool_new(FALSE)); + + a.channels = 1; + a.rate = 44100; + + v.channels = a.channels; + v.values[0] = pa_sw_volume_from_linear(0.9); + + for (a.format = 0; a.format < PA_SAMPLE_MAX; a.format ++) { + pa_memchunk i, j, k; + pa_mix_info m[2]; + void *ptr; + + printf("=== mixing: %s\n", pa_sample_format_to_string(a.format)); + + /* Generate block */ + i.memblock = generate_block(pool, &a); + i.length = pa_memblock_get_length(i.memblock); + i.index = 0; + + /* Make a copy */ + j = i; + pa_memblock_ref(j.memblock); + pa_memchunk_make_writable(&j, 0); + + /* Adjust volume of the copy */ + pa_volume_memchunk(&j, &a, &v); + + m[0].chunk = i; + m[0].volume.values[0] = PA_VOLUME_NORM; + m[0].volume.channels = a.channels; + m[1].chunk = j; + m[1].volume.values[0] = PA_VOLUME_NORM; + m[1].volume.channels = a.channels; + + k.memblock = pa_memblock_new(pool, i.length); + k.length = i.length; + k.index = 0; + + ptr = (uint8_t*) pa_memblock_acquire(k.memblock) + k.index; + pa_mix(m, 2, ptr, k.length, &a, NULL, FALSE); + pa_memblock_release(k.memblock); + + dump_block(&a, &i); + dump_block(&a, &j); + dump_block(&a, &k); + + pa_memblock_unref(i.memblock); + pa_memblock_unref(j.memblock); + pa_memblock_unref(k.memblock); + } + + pa_mempool_free(pool); + + return 0; +} -- cgit