[Asterisk-code-review] Binaural synthesis (confbridge): Adds utils/conf bridge bina... (asterisk[master])
Dennis Guse
asteriskteam at digium.com
Thu Dec 22 09:55:30 CST 2016
Dennis Guse has uploaded a new change for review. ( https://gerrit.asterisk.org/4654 )
Change subject: Binaural synthesis (confbridge): Adds utils/conf_bridge_binaural_hrir_importer
......................................................................
Binaural synthesis (confbridge): Adds utils/conf_bridge_binaural_hrir_importer
Adds the import tool for converting a HRIR database to hrirs.h
ASTERISK-26292
Change-Id: I51eb31b54c23ffd9b544bdc6a09d20c112c8a547
---
M utils/Makefile
A utils/conf_bridge_binaural_hrir_importer.c
M utils/utils.xml
3 files changed, 148 insertions(+), 0 deletions(-)
git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/54/4654/1
diff --git a/utils/Makefile b/utils/Makefile
index 97b0e2f..b211680 100644
--- a/utils/Makefile
+++ b/utils/Makefile
@@ -93,6 +93,7 @@
rm -f db1-ast/.*.d
@$(MAKE) -C db1-ast clean
+
md5.c: $(ASTTOPDIR)/main/md5.c
$(ECHO_PREFIX) echo " [CP] $(subst $(ASTTOPDIR)/,,$<) -> $@"
$(CMD_PREFIX) cp "$<" "$@"
@@ -188,6 +189,9 @@
streamplayer: streamplayer.o
+conf_bridge_binaural_hrir_importer: conf_bridge_binaural_hrir_importer.c
+ $(CC) $< -o $@ -lsndfile
+
muted: muted.o
muted: LIBS+=$(AUDIO_LIBS)
muted: _ASTCFLAGS:=$(filter-out -Werror,$(_ASTCFLAGS))
diff --git a/utils/conf_bridge_binaural_hrir_importer.c b/utils/conf_bridge_binaural_hrir_importer.c
new file mode 100644
index 0000000..5f113b9
--- /dev/null
+++ b/utils/conf_bridge_binaural_hrir_importer.c
@@ -0,0 +1,140 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2016, Digium, Inc.
+ *
+ * Frank Haase <fra.haase at gmail.com>
+ * Dennis Guse <dennis.guse at alumni.tu-berlin.de>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*!
+ * \file
+ * Converts a Head Related Impulse Response (HRIR) database (a multi-channel wave) into a C header file.
+ * HRIR for the left ear and HRIR for right ear have to be interleaved.
+ * No further signal processing is applied (e.g., resampling).
+ *
+ * Info messages are printed to stderror and the generated header file to output.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sndfile.h>
+
+int main (int argc, char **argv)
+{
+ char *hrir_filename;
+ unsigned int binaural_index_start;
+ unsigned int binaural_index_end;
+
+ SNDFILE *hrir_file;
+ SF_INFO hrir_info;
+ float *hrir_data;
+
+ unsigned int impulse_response_index_start;
+ unsigned int impulse_response_index_end;
+
+ int i;
+ int j;
+ int ir_current;
+
+ if(argc != 4) {
+ puts("HRIR database to C header file converter.");
+ puts("Usage: conf_bridge_binaural_hrir_importer HRIR.wav INDEX_START INDEX_END > OUTPUT.h");
+ puts("Example: conf_bridge_binaural_hrir_importer hrirs.wav 0 180 > ../bridges/bridge_softmix/include/hrirs.h");
+ return -1;
+ }
+
+ /* Parse arguments */
+ hrir_filename = argv[1];
+ binaural_index_start = atoi(argv[2]);
+ binaural_index_end = atoi(argv[3]);
+
+ /* Read HRIR database */
+ hrir_file = sf_open (hrir_filename, SFM_READ, &hrir_info);
+ if(hrir_file == NULL) {
+ fprintf(stderr, "ERROR: Could not open HRIR database (%s).\n", hrir_filename);
+ return -1;
+ }
+ fprintf (stderr, "INFO: Opened HRIR database (%s) with: number channels: %d; samplerate: %d; samples per channel: %ld\n", hrir_filename, hrir_info.channels, hrir_info.samplerate, hrir_info.frames);
+
+ hrir_data = malloc(hrir_info.channels * hrir_info.frames * sizeof (float));
+ if(hrir_data == NULL) {
+ fprintf(stderr, "ERROR: Out of memory!");
+ return -1;
+ }
+
+ /* Channels are interleaved */
+ sf_read_float(hrir_file, hrir_data, hrir_info.channels * hrir_info.frames);
+ sf_close(hrir_file);
+
+ if(binaural_index_start >= binaural_index_end) {
+ fprintf(stderr, "ERROR: INDEX_START (%d) must be smaller than INDEX_END (%d).", binaural_index_start, binaural_index_end);
+ return -1;
+ }
+
+ if (binaural_index_end * 2 >= hrir_info.channels) {
+ fprintf(stderr, "ERROR: END_INDEX (%d) is out of range for HRIR database (%s).\n", binaural_index_end, hrir_filename);
+ return -1;
+ }
+
+ /* Convert indices */
+ impulse_response_index_start = 2 * binaural_index_start;
+ impulse_response_index_end = (binaural_index_end + 1) * 2;
+
+ /* Write header */
+ printf("//Used hrirs database: %s\n", hrir_filename);
+ printf("//Start index in database: %d\n", impulse_response_index_start);
+ printf("//End index in database: %d\n", impulse_response_index_end);
+
+ printf("#define HRIRS_IMPULSE_LEN %ld\n", hrir_info.frames);
+ printf("#define HRIRS_IMPULSE_SIZE %d\n", binaural_index_end - binaural_index_start + 1);
+ printf("#define HRIRS_SAMPLE_RATE %d\n", hrir_info.samplerate);
+
+ printf("float hrirs_left[HRIRS_IMPULSE_SIZE][HRIRS_IMPULSE_LEN] = {\n");
+ for (ir_current = impulse_response_index_start; ir_current < impulse_response_index_end; ir_current += 2) {
+ printf("{");
+
+ for (j = 0; j < hrir_info.frames - 1; j++) {
+ printf("%.16f,", hrir_data[ir_current * hrir_info.frames + j]);
+ }
+ /* Write last without trailing "," */
+ printf("%.16f", hrir_data[ir_current * hrir_info.frames + hrir_info.frames - 1]);
+
+ if (ir_current + 2 < impulse_response_index_end) {
+ printf("},\n");
+ } else {
+ printf("}};");
+ }
+ }
+
+ printf("\nfloat hrirs_right[HRIRS_IMPULSE_SIZE][HRIRS_IMPULSE_LEN] = {\n");
+ for (ir_current = impulse_response_index_start + 1; ir_current < impulse_response_index_end + 1; ir_current += 2) {
+ printf("{");
+
+ for (j = 0; j < hrir_info.frames - 1; j++) {
+ printf("%.16f,", hrir_data[ir_current * hrir_info.frames + j]);
+ }
+ /* Write last without trailing "," */
+ printf("%.16f", hrir_data[ir_current * hrir_info.frames + hrir_info.frames - 1]);
+
+ if (ir_current + 2 < impulse_response_index_end) {
+ printf("},\n");
+ } else {
+ printf("}};");
+ }
+ }
+
+ fprintf(stderr, "INFO: Successfully converted: imported %d impulse responses.\n", impulse_response_index_end - impulse_response_index_start);
+ free (hrir_data);
+}
diff --git a/utils/utils.xml b/utils/utils.xml
index 909406e..54a088b 100644
--- a/utils/utils.xml
+++ b/utils/utils.xml
@@ -20,6 +20,10 @@
<depend>newt</depend>
<support_level>extended</support_level>
</member>
+ <member name="conf_bridge_binaural_hrir_importer">
+ <defaultenabled>no</defaultenabled>
+ <support_level>extended</support_level>
+ </member>
<member name="check_expr">
<defaultenabled>no</defaultenabled>
<support_level>extended</support_level>
--
To view, visit https://gerrit.asterisk.org/4654
To unsubscribe, visit https://gerrit.asterisk.org/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: I51eb31b54c23ffd9b544bdc6a09d20c112c8a547
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Owner: Dennis Guse <dennis.guse at alumni.tu-berlin.de>
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