summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/LICENSE.txt342
-rw-r--r--src/Makefile29
-rw-r--r--src/capture.c203
-rw-r--r--src/capture.h9
-rw-r--r--src/compute.c116
-rw-r--r--src/compute.h10
-rw-r--r--src/fft.c241
-rw-r--r--src/fft.h19
-rw-r--r--src/gtkvumeter.c263
-rw-r--r--src/gtkvumeter.h39
-rw-r--r--src/hsv2rgb.c59
-rw-r--r--src/hsv2rgb.h18
-rw-r--r--src/music2light.c80
-rw-r--r--src/win_main.c73
-rw-r--r--src/win_main.h9
15 files changed, 1510 insertions, 0 deletions
diff --git a/src/LICENSE.txt b/src/LICENSE.txt
new file mode 100644
index 0000000..ec091c1
--- /dev/null
+++ b/src/LICENSE.txt
@@ -0,0 +1,342 @@
+
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable. However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) 19yy <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) 19yy name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Library General
+Public License instead of this License.
+
diff --git a/src/Makefile b/src/Makefile
new file mode 100644
index 0000000..67d7035
--- /dev/null
+++ b/src/Makefile
@@ -0,0 +1,29 @@
+CC=gcc
+CFLAGS=-W -Wall -Werror -Wno-error=unused-parameter -g
+LDFLAGS=-Werror -g
+EXEC=music2light
+
+CFLAGS+=$(shell pkg-config --cflags gtk+-2.0 gthread-2.0 libpulse)
+LDFLAGS+=-lm $(shell pkg-config --libs gtk+-2.0 gthread-2.0 libpulse)
+
+SRC= $(wildcard *.c)
+OBJ= $(SRC:.c=.o)
+
+all: $(EXEC)
+
+$(EXEC): $(OBJ)
+ $(CC) -o $@ $^ $(LDFLAGS)
+
+#main.o: hello.h
+
+%.o: %.c
+ $(CC) -o $@ -c $< $(CFLAGS)
+
+.PHONY: clean mrproper
+
+clean:
+ rm *.o
+
+mrproper: clean
+ rm $(EXEC)
+
diff --git a/src/capture.c b/src/capture.c
new file mode 100644
index 0000000..e8ca2fd
--- /dev/null
+++ b/src/capture.c
@@ -0,0 +1,203 @@
+#include "capture.h"
+#include <pulse/pulseaudio.h>
+#include <gtk/gtk.h>
+
+#define APP_TITLE "Test 5 lpo"
+#define BUFSIZE 1024
+
+extern void my_process(float *data, size_t nsamples, size_t nchan);
+
+capture_sound_level_cb_t *capture_sound_level_cb=NULL;
+
+int capture_init(pa_mainloop **m, pa_context **c);
+void context_state_callback(pa_context *c, void *userdata);
+void context_get_server_info_callback(pa_context *c, const pa_server_info*si, void *userdata);
+void context_get_source_info_callback(pa_context *c, const pa_source_info *si, int is_last, void *userdata);
+pa_stream * create_stream(pa_context *c, const pa_source_info *si);
+void stream_state_callback(pa_stream *s, void *userdata);
+void stream_read_callback(pa_stream *s, size_t nbytes, void *userdata);
+
+char *device_name=NULL;
+
+// Main procedure of this thread
+void audio_thread(void *args) {
+ pa_context *c;
+ pa_mainloop *m;
+ int res, retval;
+
+ capture_sound_level_cb=(capture_sound_level_cb_t *)args;
+
+ //printf("debug : args==%p capture_sound_level_cb==%p\n", args, capture_sound_level_cb);
+
+ res=capture_init(&m, &c);
+ g_assert(res==0);
+
+ res=pa_mainloop_run(m,&retval);
+ g_assert(res==0);
+ g_assert(retval==0);
+
+// pa_context_disconnect(pa_ct);
+ pa_mainloop_free(m);
+}
+
+int capture_init(pa_mainloop **m, pa_context **c) {
+ int res=0;
+
+ *m=pa_mainloop_new();
+ g_assert(*m);
+
+ *c = pa_context_new(pa_mainloop_get_api(*m), APP_TITLE);
+ g_assert(*c);
+
+ pa_context_set_state_callback(*c, context_state_callback, NULL);
+ res=pa_context_connect(*c, NULL, PA_CONTEXT_NOAUTOSPAWN, NULL);
+
+ return res;
+}
+
+void context_state_callback(pa_context *c, void *userdata) {
+ switch (pa_context_get_state(c)) {
+ case PA_CONTEXT_UNCONNECTED:
+ printf("PA_CONTEXT_UNCONNECTED\n");
+ break;
+ case PA_CONTEXT_CONNECTING:
+ printf("PA_CONTEXT_CONNECTING\n");
+ break;
+ case PA_CONTEXT_AUTHORIZING:
+ printf("PA_CONTEXT_AUTHORIZING\n");
+ break;
+ case PA_CONTEXT_SETTING_NAME:
+ printf("PA_CONTEXT_SETTING_NAME\n");
+ break;
+ case PA_CONTEXT_READY:
+ printf("PA_CONTEXT_READY\n");
+// if (!device_name) {
+ pa_operation_unref(pa_context_get_server_info(c, context_get_server_info_callback, NULL));
+/* } else {
+ pa_operation_unref(pa_context_get_source_info_by_name(c, device_name, context_get_source_info_callback, NULL));
+ }
+*/
+ break;
+
+ case PA_CONTEXT_FAILED:
+ printf("PA_CONTEXT_FAILED\n");
+ break;
+
+ case PA_CONTEXT_TERMINATED:
+ printf("PA_CONTEXT_TERMINATED\n");
+ break;
+ }
+}
+
+void context_get_server_info_callback(pa_context *c, const pa_server_info*si, void *userdata) {
+ if (!si) {
+ printf("Failed to get server information\n");
+ return;
+ }
+
+ if (!si->default_source_name) {
+ printf("No default source set\n");
+ return;
+ }
+
+ pa_operation_unref(pa_context_get_source_info_by_name(c, si->default_source_name, context_get_source_info_callback, NULL));
+
+}
+
+void context_get_source_info_callback(pa_context *c, const pa_source_info *si, int is_last, void *userdata) {
+
+ if (is_last < 0) {
+ printf("Failed to get sink information\n");
+ return;
+ }
+
+ if (!si) {
+ return;
+ }
+
+ create_stream(c,si);
+}
+
+pa_stream *create_stream(pa_context *c, const pa_source_info *si) {
+ static const pa_buffer_attr ba={
+ .maxlength=-1,
+ .tlength=1024,
+ .prebuf=-1,
+ .minreq=-1,
+ // .minreq=256, //For FFT calculus
+ .fragsize=512
+ };
+
+ pa_sample_spec nss = {
+ .format = PA_SAMPLE_FLOAT32LE,
+ .rate = si->sample_spec.rate,
+ .channels = si->sample_spec.channels
+ };
+
+ pa_stream *stream=NULL;
+ //pa_proplist *pl=NULL;
+ char t[256];
+
+/*
+ pa_channel_map cmap;
+ pa_channel_map_init_mono(&cmap);
+ //pa_channel_map_init_stereo(&cmap);
+*/
+
+ printf("Source : %s (%s)\n", si->name, si->description);
+ printf("Using sample format: %s\n", pa_sample_spec_snprint(t, sizeof(t), &nss));
+ printf("Using channel map: %s\n", pa_channel_map_snprint(t, sizeof(t), &(si->channel_map)));
+/*
+ pl=pa_proplist_new();
+ pa_proplist_set(pl, "maxlength", &pl_maxlength, sizeof(pl_maxlength));
+ pa_proplist_set(pl, "tlength", &pl_tlength, sizeof(pl_tlength));
+ pa_proplist_set(pl, "fragsize", &pl_fragsize, sizeof(pl_fragsize));
+*/
+ stream=pa_stream_new(c, APP_TITLE, &nss, &(si->channel_map));
+ //stream=pa_stream_new_with_proplist(c, APP_TITLE, &(si->sample_spec), &(si->channel_map), pl);
+ pa_stream_set_state_callback(stream, stream_state_callback, NULL);
+ pa_stream_set_read_callback(stream, stream_read_callback, NULL);
+ //pa_stream_connect_record(stream, APP_TITLE, NULL, (enum pa_stream_flags) 0);
+ pa_stream_connect_record(stream, si->name, &ba, PA_STREAM_ADJUST_LATENCY);
+
+ return stream;
+}
+
+void stream_state_callback(pa_stream *s, void *userdata) {
+ switch (pa_stream_get_state(s)) {
+ case PA_STREAM_UNCONNECTED:
+ printf("PA_STREAM_UNCONNECTED\n");
+ break;
+ case PA_STREAM_CREATING:
+ printf("PA_STREAM_CREATING\n");
+ break;
+ case PA_STREAM_READY:
+ printf("PA_STREAM_READY\n");
+ //g_timeout_add(100, latency_func, NULL);
+ //pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_info_callback, NULL));
+ break;
+ case PA_STREAM_FAILED:
+ printf("PA_STREAM_FAILED\n");
+ break;
+ case PA_STREAM_TERMINATED:
+ printf("PA_STREAM_TERMINATED\n");
+ break;
+ }
+}
+
+void stream_read_callback(pa_stream *s, size_t nbytes, void *userdata) {
+ const void *p;
+ //printf("stream_read_callback %i\n", nbytes);
+
+ if (pa_stream_peek(s, &p, &nbytes) < 0) {
+ printf("pa_stream_peek() failed\n");//: %s", pa_strerror(pa_context_errno(context)));
+ return;
+ }
+
+//printf("debug : before call capture_sound_level_cb==%p\n", capture_sound_level_cb);
+ my_process((float *)p,nbytes/sizeof(float), pa_stream_get_sample_spec(s)->channels);
+//printf("debug : after call capture_sound_level_cb==%p\n", capture_sound_level_cb);
+
+ pa_stream_drop(s);
+}
+
diff --git a/src/capture.h b/src/capture.h
new file mode 100644
index 0000000..2acbe09
--- /dev/null
+++ b/src/capture.h
@@ -0,0 +1,9 @@
+#ifndef CAPTURE_H
+#define CAPTURE_H
+#include <gtk/gtk.h>
+
+typedef void(* capture_sound_level_cb_t)(gint sound_level, void *userdata);
+
+void audio_thread(void *args);
+
+#endif /*CAPTURE_H*/
diff --git a/src/compute.c b/src/compute.c
new file mode 100644
index 0000000..272d6f8
--- /dev/null
+++ b/src/compute.c
@@ -0,0 +1,116 @@
+#include "compute.h"
+
+#include "fft.h"
+#include <math.h>
+
+#define MIN_SAMPLES 256
+#define MAX_SAMPLES 2048
+
+//#define MAX(a,b) (a>b?a:b)
+//#define MIN(a,b) (a<b?a:b)
+
+//static inline float todB_a(const float *x);
+void compute_spectrum(float *data, int width, float output[PSHalf]);
+
+
+float compute_level(const float *data, size_t nsamples, int rate) {
+
+ size_t i;
+ float input[MAX_SAMPLES], pwrspec[PSHalf];
+ float value;
+ int f, min_f_index, max_f_index;
+
+ if (nsamples >= MAX_SAMPLES) {
+ printf("WARN : nsamples >= MAX_SAMPLES : %i >= %i\n", nsamples, MAX_SAMPLES);
+ nsamples=MAX_SAMPLES;
+ }
+ if (nsamples < MIN_SAMPLES) {
+ printf("WARN : nsamples < MIN_SAMPLES : %i >= %i\n", nsamples, MIN_SAMPLES);
+ // Replicate with symmetry the sound to obtain an input buffer of the minimal len
+ for (i=0;i<MIN_SAMPLES;i++) {
+ if ( (i/nsamples)%2==1 )
+ input[i]=data[i]; // First channel only
+ else
+ input[i]=data[nsamples-i-1];
+ }
+ nsamples=MIN_SAMPLES;
+ } else {
+ for (i=0;i<nsamples;i++) {
+ input[i]=data[i]; // First channel only
+ }
+ }
+
+ compute_spectrum(input, nsamples, pwrspec);
+
+ // Compute the mean power for 200Hz to 2000Hz band
+ min_f_index=((float)PSHalf)*200.f/(((float)rate)/2.f);
+ max_f_index=((float)PSHalf)*2000.f/(((float)rate)/2.f);
+
+ value=0.f;
+ for (f=min_f_index;f<=max_f_index;f++) {
+ value+=pwrspec[f];
+ }
+ // Mean value
+ value=value/(max_f_index-min_f_index+1);
+
+ return value;
+}
+/*
+static inline float todB_a(const float *x){
+ return (float)((*(int32_t *)x)&0x7fffffff) * 7.17711438e-7f -764.6161886f;
+}
+*/
+// Adapted from Audacity
+void compute_spectrum(float *data, int width, float output[PSHalf]) {
+
+ int i, start, windows;
+ float temp;
+ float in[PSNumS];
+ float out[PSHalf];
+ float processed[PSHalf]={0.0f};
+
+ start = 0;
+ windows = 0;
+ while (start + PSNumS <= width) {
+ // Windowing : Hanning
+ for (i=0; i<PSNumS; i++)
+ in[i] = data[start+i] *(0.50-0.50*cos(2*M_PI*i/(PSNumS-1)));
+
+ // Returns only the real part of the result
+ PowerSpectrum(in, out);
+
+ for (i=0; i<PSHalf; i++)
+ processed[i] += out[i];
+
+ start += PSHalf;
+ windows++;
+ }
+ // Convert to decibels
+ // But do it safely; -Inf is nobody's friend
+ for (i = 0; i < PSHalf; i++){
+ temp=(processed[i] / PSNumS / windows);
+ if (temp > 0.0)
+ output[i] = 10*log10(temp);
+ else
+ output[i] = 0;
+ }
+}
+
+void audio2hsv_1(float audio_level, float *light_h, float *light_s, float *light_v) {
+ static float hue=0;
+
+ float level_norm=(50.f+audio_level)/30.f;
+
+ if (level_norm<0.f) level_norm=0.f;
+ if (level_norm>1.f) level_norm=1.f;
+ hue=(hue+0.0002f);
+ if (hue>1.f) hue-=1.f;
+
+ printf("%+3.1f %+1.3f\n", audio_level, level_norm);
+
+ // Dummy code
+ *light_h=hue;
+ *light_s=1.f;
+ *light_v=level_norm;
+}
+
diff --git a/src/compute.h b/src/compute.h
new file mode 100644
index 0000000..23d5798
--- /dev/null
+++ b/src/compute.h
@@ -0,0 +1,10 @@
+#ifndef COMPUTE_H
+#define COMPUTE_H
+#include <stdlib.h> // for size_t
+#include <stdio.h> // for printf
+
+float compute_level(const float *data, size_t nsamples, int rate);
+void audio2hsv_1(float audio_level, float *light_h, float *light_s, float *light_v);
+
+#endif
+
diff --git a/src/fft.c b/src/fft.c
new file mode 100644
index 0000000..dd91d14
--- /dev/null
+++ b/src/fft.c
@@ -0,0 +1,241 @@
+#include "fft.h"
+#include <math.h>
+#include <stdlib.h>
+
+/* Everything here comes from Audacity 1.3.13
+ (orignally in C++ and with more genericity and functionnality)
+ Original Author : Dominic Mazzoni
+ Licenced under GPL 2.0 (see LICENCE)
+*/
+
+#define MaxFastBits 16
+
+int *gFFTBitTable[MaxFastBits]={NULL};
+
+void InitFFT();
+int NumberOfBitsNeeded(int PowerOfTwo);
+inline int FastReverseBits(int i, int NumBits);
+int ReverseBits(int index, int NumBits);
+
+
+void FFT(int NumSamples,
+ int InverseTransform,
+ float *RealIn, float *ImagIn, float *RealOut, float *ImagOut)
+{
+ int NumBits; /* Number of bits needed to store indices */
+ int i, j, k, n;
+ int BlockSize, BlockEnd;
+
+ double angle_numerator = 2.0 * M_PI;
+ double tr, ti; /* temp real, temp imaginary */
+/*
+ if (!IsPowerOfTwo(NumSamples)) {
+ fprintf(stderr, "%d is not a power of two\n", NumSamples);
+ exit(1);
+ }
+*/
+ if (!gFFTBitTable[0])
+ InitFFT();
+
+ if (!InverseTransform)
+ angle_numerator = -angle_numerator;
+
+ NumBits = NumberOfBitsNeeded(NumSamples);
+
+ /*
+ ** Do simultaneous data copy and bit-reversal ordering into outputs...
+ */
+ for (i = 0; i < NumSamples; i++) {
+ j = FastReverseBits(i, NumBits);
+ RealOut[j] = RealIn[i];
+ ImagOut[j] = (ImagIn == NULL) ? 0.0 : ImagIn[i];
+ }
+
+ /*
+ ** Do the FFT itself...
+ */
+
+ BlockEnd = 1;
+ for (BlockSize = 2; BlockSize <= NumSamples; BlockSize <<= 1) {
+
+ double delta_angle = angle_numerator / (double) BlockSize;
+
+ double sm2 = sin(-2 * delta_angle);
+ double sm1 = sin(-delta_angle);
+ double cm2 = cos(-2 * delta_angle);
+ double cm1 = cos(-delta_angle);
+ double w = 2 * cm1;
+ double ar0, ar1, ar2, ai0, ai1, ai2;
+
+ for (i = 0; i < NumSamples; i += BlockSize) {
+ ar2 = cm2;
+ ar1 = cm1;
+
+ ai2 = sm2;
+ ai1 = sm1;
+
+ for (j = i, n = 0; n < BlockEnd; j++, n++) {
+ ar0 = w * ar1 - ar2;
+ ar2 = ar1;
+ ar1 = ar0;
+
+ ai0 = w * ai1 - ai2;
+ ai2 = ai1;
+ ai1 = ai0;
+
+ k = j + BlockEnd;
+ tr = ar0 * RealOut[k] - ai0 * ImagOut[k];
+ ti = ar0 * ImagOut[k] + ai0 * RealOut[k];
+
+ RealOut[k] = RealOut[j] - tr;
+ ImagOut[k] = ImagOut[j] - ti;
+
+ RealOut[j] += tr;
+ ImagOut[j] += ti;
+ }
+ }
+ BlockEnd = BlockSize;
+ }
+
+ /*
+ ** Need to normalize if inverse transform...
+ */
+
+ if (InverseTransform) {
+ float denom = (float) NumSamples;
+
+ for (i = 0; i < NumSamples; i++) {
+ RealOut[i] /= denom;
+ ImagOut[i] /= denom;
+ }
+ }
+}
+
+void InitFFT() {
+ int len=2;
+ int b, i;
+ for (b=0; b<MaxFastBits; b++) {
+ gFFTBitTable[b]=malloc(len*sizeof(int));
+
+ for (i=0; i<len; i++)
+ gFFTBitTable[b][i] = ReverseBits(i, b+1);
+
+ len <<= 1;
+ }
+}
+
+int NumberOfBitsNeeded(int PowerOfTwo)
+{
+ int i;
+
+/*
+ if (PowerOfTwo < 2) {
+ fprintf(stderr, "Error: FFT called with size %d\n", PowerOfTwo);
+ exit(1);
+ }
+*/
+ for (i = 0;; i++)
+ if (PowerOfTwo & (1 << i))
+ return i;
+}
+
+inline int FastReverseBits(int i, int NumBits)
+{
+ if (NumBits <= MaxFastBits)
+ return gFFTBitTable[NumBits - 1][i];
+ else
+ return ReverseBits(i, NumBits);
+}
+
+int ReverseBits(int index, int NumBits)
+{
+ int i, rev;
+
+ for (i = rev = 0; i < NumBits; i++) {
+ rev = (rev << 1) | (index & 1);
+ index >>= 1;
+ }
+
+ return rev;
+}
+
+
+/*
+ * PowerSpectrum
+ *
+ * This function computes the same as RealFFT, above, but
+ * adds the squares of the real and imaginary part of each
+ * coefficient, extracting the power and throwing away the
+ * phase.
+ *
+ * For speed, it does not call RealFFT, but duplicates some
+ * of its code.
+ */
+
+void PowerSpectrum(float In[PSNumS], float Out[PSHalf]) {
+ int i;
+
+ float theta = M_PI / PSHalf;
+
+ float tmpReal[PSHalf];
+ float tmpImag[PSHalf];
+ float RealOut[PSHalf];
+ float ImagOut[PSHalf];
+
+ for (i=0; i<PSHalf; i++) {
+ tmpReal[i] = In[2*i];
+ tmpImag[i] = In[2*i+1];
+ }
+
+ FFT(PSHalf, 0, tmpReal, tmpImag, RealOut, ImagOut);
+
+ float wtemp = sin(0.5 * theta);
+
+ float wpr = -2.0 * wtemp * wtemp;
+ float wpi = -1.0 * sin(theta);
+ float wr = 1.0 + wpr;
+ float wi = wpi;
+
+ int i3;
+
+ float h1r, h1i, h2r, h2i, rt, it;
+ for (i=1; i < PSHalf/2; i++) {
+
+ i3 = PSHalf - i;
+
+ h1r = 0.5 * (RealOut[i] + RealOut[i3]);
+ h1i = 0.5 * (ImagOut[i] - ImagOut[i3]);
+ h2r = 0.5 * (ImagOut[i] + ImagOut[i3]);
+ h2i = -0.5 * (RealOut[i] - RealOut[i3]);
+
+ rt = h1r + wr * h2r - wi * h2i;
+ it = h1i + wr * h2i + wi * h2r;
+
+ Out[i] = rt * rt + it * it;
+
+ rt = h1r - wr * h2r + wi * h2i;
+ it = -h1i + wr * h2i + wi * h2r;
+
+ Out[i3] = rt * rt + it * it;
+
+ wr = (wtemp = wr) * wpr - wi * wpi + wr;
+ wi = wi * wpr + wtemp * wpi + wi;
+ }
+
+ rt = (h1r = RealOut[0]) + ImagOut[0];
+ it = h1r - ImagOut[0];
+ Out[0] = rt * rt + it * it;
+ rt = RealOut[PSHalf / 2];
+ it = ImagOut[PSHalf / 2];
+ Out[PSHalf / 2] = rt * rt + it * it;
+}
+
+void DeinitFFT() {
+ int i;
+ if (gFFTBitTable[0]) {
+ for (i=0;i<MaxFastBits;i++) {
+ free(gFFTBitTable[i]);
+ }
+ }
+}
+
diff --git a/src/fft.h b/src/fft.h
new file mode 100644
index 0000000..6066d52
--- /dev/null
+++ b/src/fft.h
@@ -0,0 +1,19 @@
+#ifndef FFT_H
+#define FFT_H
+
+/* Everything here comes from Audacity 1.3.13
+ (orignally in C++ and with more genericity and functionnality)
+ Original Author : Dominic Mazzoni
+ Licenced under GPL 2.0 (see LICENCE)
+*/
+
+#define PSNumS 256
+#define PSHalf 128
+void PowerSpectrum(float In[PSNumS], float Out[PSHalf]);
+
+void FFT(int NumSamples, int InverseTransform,
+ float *RealIn, float *ImagIn, float *RealOut, float *ImagOut);
+void DeinitFFT();
+
+#endif
+
diff --git a/src/gtkvumeter.c b/src/gtkvumeter.c
new file mode 100644
index 0000000..d57cc62
--- /dev/null
+++ b/src/gtkvumeter.c
@@ -0,0 +1,263 @@
+#include <string.h>
+#include "gtkvumeter.h"
+
+#define MIN_HORIZONTAL_VUMETER_WIDTH 40
+#define HORIZONTAL_VUMETER_HEIGHT 20
+#define VERTICAL_VUMETER_WIDTH 20
+#define MIN_VERTICAL_VUMETER_HEIGHT 40
+
+G_DEFINE_TYPE (GtkVuMeter, gtk_vu_meter, GTK_TYPE_DRAWING_AREA);
+
+static GdkColor default_f_gradient_keys[3] = {{0,65535,0,0},{0,65535,65535,0},{0,0,65535,0}};
+static GdkColor default_b_gradient_keys[3] = {{0,49151,0,0},{0,49151,49151,0},{0,0,49151,0}};
+
+static gboolean gtk_vu_meter_expose (GtkWidget *vumeter, GdkEventExpose *event);
+static void gtk_vu_meter_setup_colors (GtkVuMeter *vumeter);
+static void gtk_vu_meter_free_colors (GtkVuMeter *vumeter);
+static void free_drawbuf(guchar *pixels, gpointer data);
+static void gtk_vu_meter_size_request (GtkWidget *widget, GtkRequisition *requisition);
+static void gtk_vu_meter_size_allocate (GtkWidget *widget, GtkAllocation *allocation);
+static gint gtk_vu_meter_sound_level_to_draw_level (GtkVuMeter *vumeter);
+
+static void gtk_vu_meter_class_init (GtkVuMeterClass *class) {
+ GtkWidgetClass *widget_class;
+ widget_class = GTK_WIDGET_CLASS (class);
+ widget_class->expose_event = gtk_vu_meter_expose;
+ widget_class->size_request = gtk_vu_meter_size_request;
+ widget_class->size_allocate = gtk_vu_meter_size_allocate;
+}
+
+static void gtk_vu_meter_init (GtkVuMeter *vumeter) {
+ vumeter->vertical=TRUE;
+ gtk_vu_meter_set_gradient(vumeter, 3, default_f_gradient_keys, 3, default_b_gradient_keys);
+ gtk_vu_meter_setup_colors(vumeter);
+}
+
+void gtk_vu_meter_set_gradient (GtkVuMeter *vumeter, gint f_gradient_key_count, GdkColor *f_gradient_keys, gint b_gradient_key_count, GdkColor *b_gradient_keys) {
+ //XXX : memdup is a bad idea ?
+ GdkColor *fgk = g_memdup(f_gradient_keys, f_gradient_key_count*sizeof(GdkColor));
+ GdkColor *bgk = g_memdup(b_gradient_keys, b_gradient_key_count*sizeof(GdkColor));
+ g_return_if_fail (fgk != NULL);
+ g_return_if_fail (bgk != NULL);
+
+ vumeter->f_gradient_keys = fgk;
+ vumeter->f_gradient_key_count=f_gradient_key_count;
+ vumeter->b_gradient_keys = bgk;
+ vumeter->b_gradient_key_count=b_gradient_key_count;
+}
+static void gtk_vu_meter_free_colors (GtkVuMeter *vumeter) {
+ // TODO : free pixmaps
+}
+
+static void gtk_vu_meter_setup_colors (GtkVuMeter *vumeter) {
+
+ gint i,j;
+ guchar *f_drawbuf, *b_drawbuf, f_r, f_g, f_b, b_r, b_g, b_b;
+ gint f_key_len, b_key_len;
+ gint f_key_i, b_key_i;
+ gdouble f_key_pos, b_key_pos;
+ GdkColor *fgk, *bgk;
+
+ gint h=GTK_WIDGET(vumeter)->allocation.height;
+ gint w=GTK_WIDGET(vumeter)->allocation.width;
+
+ // Clean every previous colors and buffers
+ gtk_vu_meter_free_colors (vumeter);
+
+ if (vumeter->vertical == TRUE) {
+ vumeter->colors = MAX(h, 0);
+ } else {
+ vumeter->colors = MAX(w, 0);
+ }
+
+ // Allocate a memory buffers to hold the gradients
+ f_drawbuf=g_malloc(h*w*3);
+ b_drawbuf=g_malloc(h*w*3);
+ g_return_if_fail (f_drawbuf != NULL);
+ g_return_if_fail (b_drawbuf != NULL);
+
+ // Compute some values before looping for gradient generation
+ f_key_len = vumeter->colors / (vumeter->f_gradient_key_count-1) + 1;
+ b_key_len = vumeter->colors / (vumeter->b_gradient_key_count-1) + 1;
+ fgk=vumeter->f_gradient_keys;
+ bgk=vumeter->b_gradient_keys;
+
+ for (i=0; i<vumeter->colors; i++) {
+ // Compute the current position in the gradient keys
+ f_key_i=i/f_key_len;
+ f_key_pos=((gdouble) (i%f_key_len)/f_key_len);
+ b_key_i=i/f_key_len;
+ b_key_pos=((gdouble) (i%b_key_len)/b_key_len);
+
+ /* Generate the Colours */
+ /* foreground */
+ f_r = ( fgk[f_key_i].red*(1.0-f_key_pos) + fgk[f_key_i+1].red*f_key_pos ) / 256;
+ f_g = ( fgk[f_key_i].green*(1.0-f_key_pos) + fgk[f_key_i+1].green*f_key_pos ) / 256;
+ f_b = ( fgk[f_key_i].blue*(1.0-f_key_pos) + fgk[f_key_i+1].blue*f_key_pos ) / 256;
+ /* background */
+ b_r = ( bgk[b_key_i].red*(1.0-b_key_pos) + bgk[b_key_i+1].red*b_key_pos ) / 256;
+ b_g = ( bgk[b_key_i].green*(1.0-b_key_pos) + bgk[b_key_i+1].green*b_key_pos ) / 256;
+ b_b = ( bgk[b_key_i].blue*(1.0-b_key_pos) + bgk[b_key_i+1].blue*b_key_pos ) / 256;
+
+ /* Apply the color in the drawbufs */
+ if (vumeter->vertical == TRUE) {
+ // Vertical mode : draw directly the whole line of identical color
+ for (j=3*w*i; j<3*w*(i+1); ) {
+ f_drawbuf[j++]=f_r;
+ f_drawbuf[j++]=f_g;
+ f_drawbuf[j++]=f_b;
+ }
+ for (j=3*w*i; j<3*w*(i+1); ) {
+ b_drawbuf[j++]=b_r;
+ b_drawbuf[j++]=b_g;
+ b_drawbuf[j++]=b_b;
+ }
+ } else {
+ // Horiziontal mode : draw only the first line (color change at each pixel)
+ // Others line will be duplicated at the end
+ f_drawbuf[i]=f_r;
+ f_drawbuf[i+1]=f_g;
+ f_drawbuf[i+2]=f_b;
+ b_drawbuf[i]=b_r;
+ b_drawbuf[i+1]=b_g;
+ b_drawbuf[i+2]=b_b;
+ }
+ }
+ if (vumeter->vertical != TRUE) {
+ // Duplicate the first line over the others
+ for (j=1; j<h; j++) {
+ memcpy(f_drawbuf, f_drawbuf+3*w*j, w);
+ }
+ }
+
+ vumeter->f_pixbuf = gdk_pixbuf_new_from_data(f_drawbuf, GDK_COLORSPACE_RGB, FALSE, 8, w, h, w*3, free_drawbuf, NULL);
+ vumeter->b_pixbuf = gdk_pixbuf_new_from_data(b_drawbuf, GDK_COLORSPACE_RGB, FALSE, 8, w, h, w*3, free_drawbuf, NULL);
+}
+
+static void gtk_vu_meter_size_request (GtkWidget *widget, GtkRequisition *requisition)
+{
+ GtkVuMeter *vumeter;
+
+ g_return_if_fail (GTK_IS_VU_METER (widget));
+ g_return_if_fail (requisition != NULL);
+
+ vumeter = GTK_VU_METER (widget);
+
+ if (vumeter->vertical == TRUE) {
+ requisition->width = VERTICAL_VUMETER_WIDTH;
+ requisition->height = MIN_VERTICAL_VUMETER_HEIGHT;
+ } else {
+ requisition->width = MIN_HORIZONTAL_VUMETER_WIDTH;
+ requisition->height = HORIZONTAL_VUMETER_HEIGHT;
+ }
+}
+
+static void gtk_vu_meter_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
+{
+ GtkVuMeter *vumeter;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (GTK_IS_VU_METER (widget));
+ g_return_if_fail (allocation != NULL);
+
+ widget->allocation = *allocation;
+ vumeter = GTK_VU_METER (widget);
+
+ if (GTK_WIDGET_REALIZED (widget)) {
+ if (vumeter->vertical == TRUE) { /* veritcal */
+ gdk_window_move_resize (widget->window, allocation->x, allocation->y,
+ VERTICAL_VUMETER_WIDTH, MAX(allocation->height, MIN_VERTICAL_VUMETER_HEIGHT));
+ } else { /* horizontal */
+ gdk_window_move_resize (widget->window, allocation->x, allocation->y,
+ MAX(allocation->width, MIN_HORIZONTAL_VUMETER_WIDTH), HORIZONTAL_VUMETER_HEIGHT);
+ }
+ /* Fix the colours */
+ gtk_vu_meter_setup_colors (vumeter);
+ }
+}
+
+static void free_drawbuf(guchar *pixels, gpointer data) {
+ g_free(pixels);
+}
+
+static gboolean gtk_vu_meter_expose (GtkWidget *vumeter, GdkEventExpose *event) {
+ //gdk_pixbuf_render_to_drawable(pixbuf, dbuf_pixmap, app->style->fg_gc[GTK_STATE_NORMAL], 0, 0, 0, 0, WIDTH, HEIGHT, GDK_RGB_DITHER_NORMAL, 0, 0);
+ cairo_t *cr;
+ gint draw_level = gtk_vu_meter_sound_level_to_draw_level(GTK_VU_METER(vumeter));
+
+ cr = gdk_cairo_create (vumeter->window);
+
+ // set a clip region for the expose event
+ cairo_rectangle (cr,event->area.x, event->area.y, event->area.width, event->area.height);
+ cairo_clip(cr);
+
+ // Paint from the stored gradient
+ gdk_cairo_set_source_pixbuf(cr, GTK_VU_METER(vumeter)->b_pixbuf,0,0);
+ cairo_paint(cr);
+
+ // set a clip region for the expose event
+ if (GTK_VU_METER(vumeter)->vertical==TRUE) {
+ cairo_rectangle (cr,event->area.x, event->area.y+draw_level, event->area.width, event->area.height-draw_level);
+ } else {
+ //TODO
+ cairo_rectangle (cr,event->area.x, event->area.y, event->area.width, 12/*event->area.height*/);
+ }
+ cairo_clip(cr);
+
+ // Paint from the stored gradient
+ gdk_cairo_set_source_pixbuf(cr, GTK_VU_METER(vumeter)->f_pixbuf,0,0);
+ cairo_paint(cr);
+
+ cairo_destroy(cr);
+
+ return FALSE;
+}
+
+static gint gtk_vu_meter_sound_level_to_draw_level (GtkVuMeter *vumeter) {
+ gint draw_level;
+ gdouble level, min, max, height;
+
+ level = (gdouble)vumeter->level;
+ min = (gdouble)vumeter->min;
+ max = (gdouble)vumeter->max;
+ height = (gdouble)vumeter->colors;
+
+ draw_level = (1.0 - (level - min)/(max - min)) * height;
+
+ //printf("1.0 - (%lf - %lf)/(%lf - %lf)) * %lf => %i\n", level, min, max, min, height, draw_level);
+
+ return draw_level;
+}
+
+GtkWidget * gtk_vu_meter_new (gboolean vertical) {
+ GtkWidget *vumeter = g_object_new (GTK_TYPE_VU_METER, NULL);
+ GTK_VU_METER(vumeter)->vertical=vertical;
+ GTK_VU_METER(vumeter)->level=0;
+ GTK_VU_METER(vumeter)->min=-32767;
+ GTK_VU_METER(vumeter)->max=32767;
+
+ return vumeter;
+}
+
+
+void gtk_vu_meter_set_min_max (GtkVuMeter *vumeter, gint min, gint max)
+{
+ g_return_if_fail (vumeter != NULL);
+
+ vumeter->max = MAX(max, min);
+ vumeter->min = MIN(min, max);
+ if (vumeter->max == vumeter->min) {
+ vumeter->max++;
+ }
+ vumeter->level = CLAMP (vumeter->level, vumeter->min, vumeter->max);
+ gtk_widget_queue_draw (GTK_WIDGET(vumeter));
+}
+
+void gtk_vu_meter_set_level(GtkVuMeter *vumeter, gint level)
+{
+ g_return_if_fail (vumeter != NULL);
+
+ vumeter->level = CLAMP (level, vumeter->min, vumeter->max);
+ gtk_widget_queue_draw (GTK_WIDGET(vumeter));
+}
+
diff --git a/src/gtkvumeter.h b/src/gtkvumeter.h
new file mode 100644
index 0000000..07eb7c5
--- /dev/null
+++ b/src/gtkvumeter.h
@@ -0,0 +1,39 @@
+#ifndef GTKVUMETER_H
+#define GTKVUMETER_H
+#include <gtk/gtk.h>
+
+#define GTK_TYPE_VU_METER (gtk_vu_meter_get_type ())
+#define GTK_VU_METER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_VU_METER, GtkVuMeter))
+#define GTK_VU_METER_CLASS(obj) (G_TYPE_CHECK_CLASS_CAST ((obj), GTK_VU_METER, GtkVuMeterClass))
+#define GTK_IS_VU_METER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_VU_METER))
+#define GTK_IS_VU_METER_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((obj), GTK_TYPE_VU_METER))
+#define GTK_VU_METER_GET_CLASS (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_VU_METER, GtkVuMeterClass))
+
+typedef struct _GtkVuMeter GtkVuMeter;
+typedef struct _GtkVuMeterClass GtkVuMeterClass;
+
+struct _GtkVuMeter {
+ GtkDrawingArea parent;
+
+ /* private */
+ gboolean vertical;
+ gint level, min, max;
+
+ gint f_gradient_key_count, b_gradient_key_count;
+ GdkColor *f_gradient_keys, *b_gradient_keys;
+
+ gint colors;
+ GdkPixbuf *f_pixbuf, *b_pixbuf;
+};
+
+struct _GtkVuMeterClass {
+ GtkDrawingAreaClass parent_class;
+};
+
+GtkType gtk_vu_meter_get_type (void) G_GNUC_CONST;
+GtkWidget * gtk_vu_meter_new (gboolean vertical);
+void gtk_vu_meter_set_gradient (GtkVuMeter *vumeter, gint f_gradient_key_count, GdkColor *f_gradient_keys, gint b_gradient_key_count, GdkColor *b_gradient_keys);
+void gtk_vu_meter_set_min_max (GtkVuMeter *vumeter, gint min, gint max);
+void gtk_vu_meter_set_level(GtkVuMeter *vumeter, gint level);
+
+#endif /*GTKVUMETER_H*/
diff --git a/src/hsv2rgb.c b/src/hsv2rgb.c
new file mode 100644
index 0000000..9f445e9
--- /dev/null
+++ b/src/hsv2rgb.c
@@ -0,0 +1,59 @@
+/* hsv2rgb.c
+ * Convert Hue Saturation Value to Red Green Blue
+ *
+ * P.J. 08-Aug-98
+ *
+ * Reference:
+ * D. F. Rogers
+ * Procedural Elements for Computer Graphics
+ * McGraw Hill 1985
+ */
+
+#include "hsv2rgb.h"
+
+int hsv2rgb( struct hsv_colour *hsv, struct rgb_colour *rgb ) {
+ /*
+ * Purpose:
+ * Convert HSV values to RGB values
+ * All values are in the range [0.0 .. 1.0]
+ */
+ float S, H, V, F, M, N, K;
+ int I;
+
+ S = hsv->s; /* Saturation */
+ H = hsv->h; /* Hue */
+ V = hsv->v; /* value or brightness */
+
+ if ( S == 0.0 ) {
+ /*
+ * Achromatic case, set level of grey
+ */
+ rgb->r = V;
+ rgb->g = V;
+ rgb->b = V;
+ } else {
+ /*
+ * Determine levels of primary colours.
+ */
+ if (H >= 1.0) {
+ H = 0.0;
+ } else {
+ H = H * 6;
+ } /* end if */
+ I = (int) H; /* should be in the range 0..5 */
+ F = H - I; /* fractional part */
+
+ M = V * (1 - S);
+ N = V * (1 - S * F);
+ K = V * (1 - S * (1 - F));
+
+ if (I == 0) { rgb->r = V; rgb->g = K; rgb->b = M; }
+ if (I == 1) { rgb->r = N; rgb->g = V; rgb->b = M; }
+ if (I == 2) { rgb->r = M; rgb->g = V; rgb->b = K; }
+ if (I == 3) { rgb->r = M; rgb->g = N; rgb->b = V; }
+ if (I == 4) { rgb->r = K; rgb->g = M; rgb->b = V; }
+ if (I == 5) { rgb->r = V; rgb->g = M; rgb->b = N; }
+ } /* end if */
+
+ return 0;
+} /* end function hsv2rgb */
diff --git a/src/hsv2rgb.h b/src/hsv2rgb.h
new file mode 100644
index 0000000..bd880ff
--- /dev/null
+++ b/src/hsv2rgb.h
@@ -0,0 +1,18 @@
+#ifndef HSV2RGB_H
+#define HSV2RGB_H
+
+struct hsv_colour {
+ float h;
+ float s;
+ float v;
+}; /* end struct */
+
+struct rgb_colour {
+ float r;
+ float g;
+ float b;
+}; /* end struct */
+
+int hsv2rgb( struct hsv_colour *hsv, struct rgb_colour *rgb );
+
+#endif /* HSV2RGB_H */
diff --git a/src/music2light.c b/src/music2light.c
new file mode 100644
index 0000000..fd58d03
--- /dev/null
+++ b/src/music2light.c
@@ -0,0 +1,80 @@
+#include <gtk/gtk.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include "gtkvumeter.h"
+#include "win_main.h"
+#include "compute.h"
+#include "capture.h"
+#include "hsv2rgb.h"
+
+gint *audio_vumeter_val, *light_h, *light_s, *light_v, *light_r, *light_g, *light_b;
+void my_process(float *data, size_t nsamples, size_t nchan);
+
+int main (int argc, char **argv) {
+ GtkWidget *mainwin;
+ gint vals_for_vumeters[7]={0,0,0,0,0,0,0}; //sound,h,s,v,r,g,b
+ //Some handy references to the previous array items to make things clear whenever possible
+ audio_vumeter_val=vals_for_vumeters+0;
+ light_h=vals_for_vumeters+1;
+ light_s=vals_for_vumeters+2;
+ light_v=vals_for_vumeters+3;
+ light_r=vals_for_vumeters+4;
+ light_g=vals_for_vumeters+5;
+ light_b=vals_for_vumeters+6;
+
+ pthread_t audio_analyzer;
+
+ g_thread_init(NULL);
+ gdk_threads_init();
+ gdk_threads_enter();
+ gtk_init (&argc, &argv);
+
+ mainwin=win_main_build();
+ gtk_widget_show_all (mainwin);
+
+ printf("debug : main my_process==%p\n", my_process);
+ printf("debug : main (void *)my_process==%p\n", (void *)my_process);
+ pthread_create (&audio_analyzer, (void *)NULL, (void *)audio_thread, (void *)my_process);
+ g_timeout_add (25, win_main_update_vumeters, (gpointer)vals_for_vumeters);
+
+ gtk_main ();
+ gdk_threads_leave();
+
+ return 0;
+}
+
+void my_process(float *data, size_t nsamples, size_t nchan) {
+
+ float sound_level;
+ struct hsv_colour hsv;
+ struct rgb_colour rgb;
+
+ //FIXME : rate should came from PulseAudio
+ sound_level=compute_level(data, nsamples, 44100);
+
+// printf("sound_level==%f\n", sound_level);
+
+ // Update sound vumeter value (refreshed asynchronously)
+ *audio_vumeter_val=(int)sound_level;
+
+ // Transfert Function
+ audio2hsv_1(sound_level,&(hsv.h),&(hsv.s),&(hsv.v));
+
+ // Conversion
+ hsv2rgb(&hsv, &rgb);
+// printf("hsv %+.3f %+.3f %+.3f\n", hsv.h, hsv.s, hsv.v);
+// printf("rgb %+.3f %+.3f %+.3f\n", rgb.r, rgb.g, rgb.b);
+
+ //Update vu-meters
+ *light_h=hsv.h*255;
+ *light_s=hsv.s*255;
+ *light_v=hsv.v*255;
+
+ *light_r=rgb.r*255;
+ *light_g=rgb.g*255;
+ *light_b=rgb.b*255;
+
+ // Send to DMX
+ //TODO
+}
+
diff --git a/src/win_main.c b/src/win_main.c
new file mode 100644
index 0000000..daa0a34
--- /dev/null
+++ b/src/win_main.c
@@ -0,0 +1,73 @@
+#include "win_main.h"
+#include "gtkvumeter.h"
+
+GtkWidget *vumeter_sound, *vumeter_r, *vumeter_g, *vumeter_b, *vumeter_h, *vumeter_s, *vumeter_v;
+
+GtkWidget *win_main_build() {
+ GtkWidget *win, *hbox1;
+
+ GdkColor f_gradient_red[2] = {{0,65535,0,0},{0,0,0,0}};
+ GdkColor b_gradient_red[2] = {{0,49151,0,0},{0,0,0,0}};
+ GdkColor f_gradient_green[2] = {{0,0,65535,0},{0,0,0,0}};
+ GdkColor b_gradient_green[2] = {{0,0,49151,0},{0,0,0,0}};
+ GdkColor f_gradient_blue[2] = {{0,0,0,65535},{0,0,0,0}};
+ GdkColor b_gradient_blue[2] = {{0,0,0,49151},{0,0,0,0}};
+ GdkColor f_gradient_hue[7] = {{0,65535,0,0},{0,65535,0,65535},{0,0,0,65535},{0,0,65535,65535},{0,0,65535,0},{0,65535,65535,0},{0,65535,0,0}};
+ GdkColor b_gradient_hue[7] = {{0,49151,0,0},{0,49151,0,49151},{0,0,0,49151},{0,0,49151,49151},{0,0,49151,0},{0,49151,49151,0},{0,49151,0,0}};
+
+ win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+
+ hbox1 = gtk_hbox_new(FALSE, 0);
+ gtk_container_add(GTK_CONTAINER(win), hbox1);
+ gtk_container_set_border_width(GTK_CONTAINER(hbox1), 5);
+
+//TODO : gtk_vumeter_set_min_max (GTK_VU_METER(vumeter), min, max);
+ vumeter_sound = gtk_vu_meter_new (TRUE);
+ gtk_vu_meter_set_min_max(GTK_VU_METER(vumeter_sound), -50, 0);
+ gtk_box_pack_start(GTK_BOX(hbox1), vumeter_sound, FALSE, FALSE, 0);
+
+ vumeter_h = gtk_vu_meter_new (TRUE);
+ gtk_vu_meter_set_min_max(GTK_VU_METER(vumeter_h), 0, 255);
+ gtk_vu_meter_set_gradient(GTK_VU_METER(vumeter_h), 7, f_gradient_hue, 7, b_gradient_hue);
+ gtk_box_pack_start(GTK_BOX(hbox1), vumeter_h, FALSE, FALSE, 0);
+
+ vumeter_s = gtk_vu_meter_new (TRUE);
+ gtk_vu_meter_set_min_max(GTK_VU_METER(vumeter_s), 0, 255);
+ gtk_vu_meter_set_gradient(GTK_VU_METER(vumeter_s), 2, f_gradient_red, 2, b_gradient_red);
+ gtk_box_pack_start(GTK_BOX(hbox1), vumeter_s, FALSE, FALSE, 0);
+
+ vumeter_v = gtk_vu_meter_new (TRUE);
+ gtk_vu_meter_set_min_max(GTK_VU_METER(vumeter_v), 0, 255);
+ gtk_vu_meter_set_gradient(GTK_VU_METER(vumeter_v), 2, f_gradient_red, 2, b_gradient_red);
+ gtk_box_pack_start(GTK_BOX(hbox1), vumeter_v, FALSE, FALSE, 0);
+
+
+ vumeter_r = gtk_vu_meter_new (TRUE);
+ gtk_vu_meter_set_min_max(GTK_VU_METER(vumeter_r), 0, 255);
+ gtk_vu_meter_set_gradient(GTK_VU_METER(vumeter_r), 2, f_gradient_red, 2, b_gradient_red);
+ gtk_box_pack_start(GTK_BOX(hbox1), vumeter_r, FALSE, FALSE, 0);
+
+ vumeter_g = gtk_vu_meter_new (TRUE);
+ gtk_vu_meter_set_min_max(GTK_VU_METER(vumeter_g), 0, 255);
+ gtk_vu_meter_set_gradient(GTK_VU_METER(vumeter_g), 2, f_gradient_green, 2, b_gradient_green);
+ gtk_box_pack_start(GTK_BOX(hbox1), vumeter_g, FALSE, FALSE, 0);
+
+ vumeter_b = gtk_vu_meter_new (TRUE);
+ gtk_vu_meter_set_min_max(GTK_VU_METER(vumeter_b), 0, 255);
+ gtk_vu_meter_set_gradient(GTK_VU_METER(vumeter_b), 2, f_gradient_blue, 2, b_gradient_blue);
+ gtk_box_pack_start(GTK_BOX(hbox1), vumeter_b, FALSE, FALSE, 0);
+
+ return win;
+}
+
+gboolean win_main_update_vumeters(gpointer vals) {
+ gtk_vu_meter_set_level(GTK_VU_METER(vumeter_sound), ((gint*)vals)[0]);
+ gtk_vu_meter_set_level(GTK_VU_METER(vumeter_h), ((gint*)vals)[1]);
+ gtk_vu_meter_set_level(GTK_VU_METER(vumeter_s), ((gint*)vals)[2]);
+ gtk_vu_meter_set_level(GTK_VU_METER(vumeter_v), ((gint*)vals)[3]);
+ gtk_vu_meter_set_level(GTK_VU_METER(vumeter_r), ((gint*)vals)[4]);
+ gtk_vu_meter_set_level(GTK_VU_METER(vumeter_g), ((gint*)vals)[5]);
+ gtk_vu_meter_set_level(GTK_VU_METER(vumeter_b), ((gint*)vals)[6]);
+ return TRUE;
+}
+
diff --git a/src/win_main.h b/src/win_main.h
new file mode 100644
index 0000000..5068c89
--- /dev/null
+++ b/src/win_main.h
@@ -0,0 +1,9 @@
+#ifndef WIN_MAIN_H
+#define WIN_MAIN_H
+#include <gtk/gtk.h>
+
+GtkWidget *win_main_build();
+gboolean win_main_update_vumeters(gpointer vals);
+
+#endif
+