Zomwe zili m'nkhaniyi zatengedwa kuchokera ku wanga
Chodziwira toni
Pomaliza
M'masiku akale, pamene si mabanja onse omwe anali ndi TV, ndipo theka la iwo ankasintha tchanelo pogwiritsa ntchito pliers, nkhani zochititsa chidwi zinkawoneka mu ndemanga za atolankhani zakunja zakunja kuti wopanga TV wina adapanga zida zawo ndi chowongolera chopanda zingwe. Kuchokera mwatsatanetsatane zinkadziwika kuti kulamulira kwakutali kumagwira ntchito popanda mabatire chifukwa chogwiritsa ntchito njira yachilendo - chowongolera chakutali chinali chomakina ndipo chinali chosakanizidwa cha chida choimbira - metallophone ndi revolver. Ng'oma ya mfutiyo inali ndi masilinda achitsulo aatali osiyanasiyana, ndipo pini yowomberayo itagunda imodzi mwa izo, silindayo inayamba kulira pafupipafupi. Kawirikawiri pa ultrasound. Zipangizo zamagetsi pa TV zidamva chizindikiro ichi ndipo, atatsimikiza kuchuluka kwake, adachita zoyenera - kusintha njira, kusintha voliyumu, kuzimitsa TV.
Lero tiyesa kukonzanso dongosolo lotumizira mauthenga, pogwiritsa ntchito chidziwitso chathu cha media streamer.
Kuti tiyesere chiwongolero chakutali, tidzagwiritsa ntchito mawu a chitsanzo chathu cha jenereta. Tidzawonjezerapo kuwongolera pafupipafupi kwa jenereta kuchokera ku makiyi achinsinsi ndi wolandila ndi decoder yomwe idzatulutsa malamulo olandilidwa ku console. Pambuyo pa kusintha, jenereta iyenera kutulutsa ma toni a maulendo a 6, omwe tidzakhazikitsa malamulo owonjezera / kuchepetsa voliyumu, kusintha njira, kuyatsa / kuzimitsa TV. Kukonza detector, dongosolo lotsatirali limagwiritsidwa ntchito:
struct _MSToneDetectorDef{
char tone_name[8];
int frequency; /**<Expected frequency of the tone*/
int min_duration; /**<Min duration of the tone in milliseconds */
float min_amplitude; /**<Minimum amplitude of the tone, 1.0 corresponding to the normalized 0dbm level */
};
typedef struct _MSToneDetectorDef MSToneDetectorDef;
Chowunikira chikhoza kupatsidwa 10 mwazinthu izi, kotero chowunikira chimodzi chikhoza kukhazikitsidwa kuti chizindikire zizindikiro khumi za matani awiri. Koma tidzagwiritsa ntchito zizindikiro zisanu ndi chimodzi zokha. Kusamutsa makonda ku chowunikira, njira ya MS_TONE_DETECTOR_ADD_SCAN imagwiritsidwa ntchito.
Kuti detector itidziwitse kuti siginecha yokhala ndi ma frequency omwe amafunidwa yafika pakulowetsa kwake, tiyenera kuyipatsa ntchito yoyimbira yomwe idzayambitse pankhaniyi. Izi zimachitika pogwiritsira ntchito ms_filter_set_notify_callback(). Monga mikangano, imalandira cholozera ku fyuluta, cholozera ku ntchito yobwereranso, ndi cholozera ku data yomwe tikufuna kupititsa ku ntchito yoyimba foni (data ya ogwiritsa).
Chojambulira chikayambika, ntchito yoyimba foniyo ilandila deta ya ogwiritsa ntchito, cholozera ku fyuluta yojambulira, chozindikiritsa chochitika, ndi kapangidwe kamene kamafotokoza chochitikacho:
/** * Structure carried as argument of the MS_TONE_DETECTOR_EVENT**/
struct _MSToneDetectorEvent{
char tone_name[8]; /* ΠΠΌΡ ΡΠΎΠ½Π° ΠΊΠΎΡΠΎΡΠΎΠ΅ ΠΌΡ Π΅ΠΌΡ Π½Π°Π·Π½Π°ΡΠΈΠ»ΠΈ ΠΏΡΠΈ Π½Π°ΡΡΡΠΎΠΉΠΊΠ΅ Π΄Π΅ΡΠ΅ΠΊΡΠΎΡΠ°. */
uint64_t tone_start_time; /* ΠΡΠ΅ΠΌΡ Π² ΠΌΠΈΠ»Π»ΠΈΡΠ΅ΠΊΡΠ½Π΄Π°Ρ
, ΠΊΠΎΠ³Π΄Π° ΡΠΎΠ½ Π±ΡΠ» ΠΎΠ±Π½Π°ΡΡΠΆΠ΅Π½. */
};
typedef struct _MSToneDetectorEvent MSToneDetectorEvent;
Chojambula cha block cha processing signal chikuwonetsedwa pachithunzi chamutu.
Chabwino, tsopano pulogalamu code yokha ndi ndemanga.
/* Π€Π°ΠΉΠ» mstest4.c ΠΠΌΠΈΡΠ°ΡΠΎΡ ΠΏΡΠ»ΡΡΠ° ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΈ ΠΏΡΠΈΠ΅ΠΌΠ½ΠΈΠΊΠ°. */
#include <mediastreamer2/msfilter.h>
#include <mediastreamer2/msticker.h>
#include <mediastreamer2/dtmfgen.h>
#include <mediastreamer2/mssndcard.h>
#include <mediastreamer2/msvolume.h>
#include <mediastreamer2/mstonedetector.h>
/* ΠΠΎΠ΄ΠΊΠ»ΡΡΠ°Π΅ΠΌ Π·Π°Π³ΠΎΠ»ΠΎΠ²ΠΎΡΠ½ΡΠΉ ΡΠ°ΠΉΠ» Ρ ΡΡΠ½ΠΊΡΠΈΡΠΌΠΈ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΠΎΠ±ΡΡΠΈΡΠΌΠΈ
* ΠΌΠ΅Π΄ΠΈΠ°ΡΡΡΠΈΠΌΠ΅ΡΠ°. */
#include <mediastreamer2/mseventqueue.h>
/* Π€ΡΠ½ΠΊΡΠΈΡ ΠΎΠ±ΡΠ°ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ·ΠΎΠ²Π°, ΠΎΠ½Π° Π±ΡΠ΄Π΅Ρ Π²ΡΠ·Π²Π°Π½Π° ΡΠΈΠ»ΡΡΡΠΎΠΌ, ΠΊΠ°ΠΊ ΡΠΎΠ»ΡΠΊΠΎ ΠΎΠ½
* ΠΎΠ±Π½Π°ΡΡΠΆΠΈΡ ΡΠΎΠ²ΠΏΠ°Π΄Π΅Π½ΠΈΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ Π²Ρ
ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΡΠΈΠ³Π½Π°Π»Π° Ρ Π·Π°Π΄Π°Π½Π½ΡΠΌΠΈ. */
static void tone_detected_cb(void *data, MSFilter *f, unsigned int event_id,
MSToneDetectorEvent *ev)
{
printf(" ΠΡΠΈΠ½ΡΡΠ° ΠΊΠΎΠΌΠ°Π½Π΄Π°: %sn", ev->tone_name);
}
int main()
{
ms_init();
/* Π‘ΠΎΠ·Π΄Π°Π΅ΠΌ ΡΠΊΠ·Π΅ΠΌΠΏΠ»ΡΡΡ ΡΠΈΠ»ΡΡΡΠΎΠ². */
MSFilter *voidsource = ms_filter_new(MS_VOID_SOURCE_ID);
MSFilter *dtmfgen = ms_filter_new(MS_DTMF_GEN_ID);
MSFilter *volume = ms_filter_new(MS_VOLUME_ID);
MSSndCard *card_playback =
ms_snd_card_manager_get_default_card(ms_snd_card_manager_get());
MSFilter *snd_card_write = ms_snd_card_create_writer(card_playback);
MSFilter *detector = ms_filter_new(MS_TONE_DETECTOR_ID);
/* ΠΡΠΈΡΠ°Π΅ΠΌ ΠΌΠ°ΡΡΠΈΠ² Π½Π°Ρ
ΠΎΠ΄ΡΡΠΈΠΉΡΡ Π²Π½ΡΡΡΠΈ Π΄Π΅ΡΠ΅ΠΊΡΠΎΡΠ° ΡΠΎΠ½ΠΎΠ², ΠΎΠ½ ΠΎΠΏΠΈΡΡΠ²Π°Π΅Ρ
* ΠΎΡΠΎΠ±ΡΠ΅ ΠΏΡΠΈΠΌΠ΅ΡΡ ΡΠ°Π·ΡΡΠΊΠΈΠ²Π°Π΅ΠΌΡΡ
ΡΠΈΠ³Π½Π°Π»ΠΎΠ².*/
ms_filter_call_method(detector, MS_TONE_DETECTOR_CLEAR_SCANS, 0);
/* Π‘ΠΎΠ·Π΄Π°Π΅ΠΌ ΠΈΡΡΠΎΡΠ½ΠΈΠΊ ΡΠ°ΠΊΡΠΎΠ² - ΡΠΈΠΊΠ΅Ρ. */
MSTicker *ticker=ms_ticker_new();
/* Π‘ΠΎΠ΅Π΄ΠΈΠ½ΡΠ΅ΠΌ ΡΠΈΠ»ΡΡΡΡ Π² ΡΠ΅ΠΏΠΎΡΠΊΡ. */
ms_filter_link(voidsource, 0, dtmfgen, 0);
ms_filter_link(dtmfgen, 0, volume, 0);
ms_filter_link(volume, 0, detector, 0);
ms_filter_link(detector, 0, snd_card_write, 0);
/* ΠΠΎΠ΄ΠΊΠ»ΡΡΠ°Π΅ΠΌ ΠΊ ΡΠΈΠ»ΡΡΡΡ ΡΡΠ½ΠΊΡΠΈΡ ΠΎΠ±ΡΠ°ΡΠ½ΠΎΠ³ΠΎ Π²ΡΠ·ΠΎΠ²Π°. */
ms_filter_set_notify_callback(detector,
(MSFilterNotifyFunc)tone_detected_cb, NULL);
/* ΠΠΎΠ΄ΠΊΠ»ΡΡΠ°Π΅ΠΌ ΠΈΡΡΠΎΡΠ½ΠΈΠΊ ΡΠ°ΠΊΡΠΎΠ². */
ms_ticker_attach(ticker,voidsource);
/* Π‘ΠΎΠ·Π΄Π°Π΅ΠΌ ΠΌΠ°ΡΡΠΈΠ², ΠΊΠ°ΠΆΠ΄ΡΠΉ ΡΠ»Π΅ΠΌΠ΅Π½Ρ ΠΊΠΎΡΠΎΡΠΎΠ³ΠΎ ΠΎΠΏΠΈΡΡΠ²Π°Π΅Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΡ
* ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΈΠ· ΡΠΎΠ½ΠΎΠ², ΠΊΠΎΡΠΎΡΡΠΉ ΡΡΠ΅Π±ΡΠ΅ΡΡΡ ΠΎΠ±Π½Π°ΡΡΠΆΠΈΠ²Π°ΡΡ: Π’Π΅ΠΊΡΡΠΎΠ²ΠΎΠ΅ ΠΈΠΌΡ
* Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ°, ΡΠ°ΡΡΠΎΡΠ° Π² Π³Π΅ΡΡΠ°Ρ
, Π΄Π»ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΡ Π² ΠΌΠΈΠ»Π»ΠΈΡΠ΅ΠΊΡΠ½Π΄Π°Ρ
,
* ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΡΠΉ ΡΡΠΎΠ²Π΅Π½Ρ ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎ 0,775Π. */
MSToneDetectorDef scan[6]=
{
{"V+", 440, 100, 0.1}, /* ΠΠΎΠΌΠ°Π½Π΄Π° "Π£Π²Π΅Π»ΠΈΡΠΈΡΡ Π³ΡΠΎΠΌΠΊΠΎΡΡΡ". */
{"V-", 540, 100, 0.1}, /* ΠΠΎΠΌΠ°Π½Π΄Π° "Π£ΠΌΠ΅Π½ΡΡΠΈΡΡ Π³ΡΠΎΠΌΠΊΠΎΡΡΡ". */
{"C+", 640, 100, 0.1}, /* ΠΠΎΠΌΠ°Π½Π΄Π° "Π£Π²Π΅Π»ΠΈΡΠΈΡΡ Π½ΠΎΠΌΠ΅Ρ ΠΊΠ°Π½Π°Π»Π°". */
{"C-", 740, 100, 0.1}, /* ΠΠΎΠΌΠ°Π½Π΄Π° "Π£ΠΌΠ΅Π½ΡΡΠΈΡΡ Π½ΠΎΠΌΠ΅Ρ ΠΊΠ°Π½Π°Π»Π°". */
{"ON", 840, 100, 0.1}, /* ΠΠΎΠΌΠ°Π½Π΄Π° "ΠΠΊΠ»ΡΡΠΈΡΡ ΡΠ΅Π»Π΅Π²ΠΈΠ·ΠΎΡ". */
{"OFF", 940, 100, 0.1} /* ΠΠΎΠΌΠ°Π½Π΄Π° "ΠΡΠΊΠ»ΡΡΠΈΡΡ ΡΠ΅Π»Π΅Π²ΠΈΠ·ΠΎΡ". */
};
/* ΠΠ΅ΡΠ΅Π΄Π°Π΅ΠΌ Π² Π΄Π΅ΡΠ΅ΠΊΡΠΎΡ ΡΠΎΠ½ΠΎΠ² ΠΏΡΠΈΠΌΠ΅ΡΡ ΡΠΈΠ³Π½Π°Π»ΠΎΠ². */
int i;
for (i = 0; i < 6; i++)
{
ms_filter_call_method(detector, MS_TONE_DETECTOR_ADD_SCAN,
&scan[i]);
}
/* ΠΠ°ΡΡΡΠ°ΠΈΠ²Π°Π΅ΠΌ ΡΡΡΡΠΊΡΡΡΡ, ΡΠΏΡΠ°Π²Π»ΡΡΡΡΡ Π²ΡΡ
ΠΎΠ΄Π½ΡΠΌ ΡΠΈΠ³Π½Π°Π»ΠΎΠΌ Π³Π΅Π½Π΅ΡΠ°ΡΠΎΡΠ°.*/
MSDtmfGenCustomTone dtmf_cfg;
dtmf_cfg.tone_name[0] = 0;
dtmf_cfg.duration = 1000;
dtmf_cfg.frequencies[0] = 440;
/* ΠΡΠ΄Π΅ΠΌ Π³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°ΡΡ ΠΎΠ΄ΠΈΠ½ ΡΠΎΠ½, ΡΠ°ΡΡΠΎΡΡ Π²ΡΠΎΡΠΎΠ³ΠΎ ΡΠΎΠ½Π° ΡΡΡΠ°Π½ΠΎΠ²ΠΈΠΌ Π² 0.*/
dtmf_cfg.frequencies[1] = 0;
dtmf_cfg.amplitude = 1.0;
dtmf_cfg.interval = 0.;
dtmf_cfg.repeat_count = 0.;
/* ΠΡΠ³Π°Π½ΠΈΠ·ΡΠ΅ΠΌ ΡΠΈΠΊΠ» ΡΠΊΠ°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π½Π°ΠΆΠ°ΡΡΡ
ΠΊΠ»Π°Π²ΠΈΡ. ΠΠ²ΠΎΠ΄ Π½ΡΠ»Ρ Π·Π°Π²Π΅ΡΡΠ°Π΅Ρ
* ΡΠΈΠΊΠ» ΠΈ ΡΠ°Π±ΠΎΡΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΡ. */
char key='9';
printf("ΠΠ°ΠΆΠΌΠΈΡΠ΅ ΠΊΠ»Π°Π²ΠΈΡΡ ΠΊΠΎΠΌΠ°Π½Π΄Ρ, Π·Π°ΡΠ΅ΠΌ Π²Π²ΠΎΠ΄.n"
"ΠΠ»Ρ Π·Π°Π²Π΅ΡΡΠ΅Π½ΠΈΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΡ Π²Π²Π΅Π΄ΠΈΡΠ΅ 0.n");
while(key != '0')
{
key = getchar();
if ((key >= 49) && (key <= 54))
{
printf("ΠΡΠΏΡΠ°Π²Π»Π΅Π½Π° ΠΊΠΎΠΌΠ°Π½Π΄Π°: %cn", key);
/* Π£ΡΡΠ°Π½Π°Π²Π»ΠΈΠ²Π°Π΅ΠΌ ΡΠ°ΡΡΠΎΡΡ Π³Π΅Π½Π΅ΡΠ°ΡΠΎΡΠ° Π² ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΠΈ Ρ
* ΠΊΠΎΠ΄ΠΎΠΌ Π½Π°ΠΆΠ°ΡΠΎΠΉ ΠΊΠ»Π°Π²ΠΈΡΠΈ.*/
dtmf_cfg.frequencies[0] = 440 + 100*(key-49);
/* ΠΠΊΠ»ΡΡΠ°Π΅ΠΌ Π·Π²ΡΠΊΠΎΠ²ΠΎΠΉ Π³Π΅Π½Π΅ΡΠ°ΡΠΎΡ c ΠΎΠ±Π½ΠΎΠ²Π»Π΅Π½Π½ΠΎΠΉ ΡΠ°ΡΡΠΎΡΠΎΠΉ. */
ms_filter_call_method(dtmfgen, MS_DTMF_GEN_PLAY_CUSTOM,
(void*)&dtmf_cfg);
}
ms_usleep(20000);
}
}
Timakonza ndikuyendetsa pulogalamuyo. Ngati zonse zikuyenda bwino, ndiye kuti pambuyo poyambitsa tiyenera kupeza zinthu monga izi:
$ ./mstest4
ALSA lib conf.c:4738:(snd_config_expand) Unknown parameters 0
ALSA lib control.c:954:(snd_ctl_open_noupdate) Invalid CTL default:0
ortp-warning-Could not attach mixer to card: Invalid argument
ALSA lib conf.c:4738:(snd_config_expand) Unknown parameters 0
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM default:0
ALSA lib conf.c:4738:(snd_config_expand) Unknown parameters 0
ALSA lib pcm.c:2266:(snd_pcm_open_noupdate) Unknown PCM default:0
ortp-warning-Strange, sound card Intel 82801AA-ICH does not seems to be capable of anything, retrying with plughw...
ΠΠ°ΠΆΠΌΠΈΡΠ΅ ΠΊΠ»Π°Π²ΠΈΡΡ ΠΊΠΎΠΌΠ°Π½Π΄Ρ, Π·Π°ΡΠ΅ΠΌ Π²Π²ΠΎΠ΄.
ΠΠ»Ρ Π·Π°Π²Π΅ΡΡΠ΅Π½ΠΈΡ ΠΏΡΠΎΠ³ΡΠ°ΠΌΠΌΡ Π²Π²Π΅Π΄ΠΈΡΠ΅ 0.
ortp-warning-alsa_set_params: periodsize:256 Using 256
ortp-warning-alsa_set_params: period:8 Using 8
Dinani makiyi aliwonse kuyambira "1" mpaka "6", kutsimikizira ndi kiyi ya "Enter", muyenera kupeza zonga izi:
2
ΠΡΠΏΡΠ°Π²Π»Π΅Π½Π° ΠΊΠΎΠΌΠ°Π½Π΄Π°: 2
ΠΡΠΈΠ½ΡΡΠ° ΠΊΠΎΠΌΠ°Π½Π΄Π°: V-
1
ΠΡΠΏΡΠ°Π²Π»Π΅Π½Π° ΠΊΠΎΠΌΠ°Π½Π΄Π°: 1
ΠΡΠΈΠ½ΡΡΠ° ΠΊΠΎΠΌΠ°Π½Π΄Π°: V+
3
ΠΡΠΏΡΠ°Π²Π»Π΅Π½Π° ΠΊΠΎΠΌΠ°Π½Π΄Π°: 3
ΠΡΠΈΠ½ΡΡΠ° ΠΊΠΎΠΌΠ°Π½Π΄Π°: C+
4
ΠΡΠΏΡΠ°Π²Π»Π΅Π½Π° ΠΊΠΎΠΌΠ°Π½Π΄Π°: 4
ΠΡΠΈΠ½ΡΡΠ° ΠΊΠΎΠΌΠ°Π½Π΄Π°: C-
0
$
Tikuwona kuti ma toni amalamulo amatumizidwa bwino ndipo chowunikira chimawazindikira.
M'nkhani yotsatira titembenukira ku kutumiza siginecha yamawu pa netiweki ya Ethernet pogwiritsa ntchito protocol ya RTP ndikuyiyika nthawi yomweyo mumayendedwe athu akutali.
Source: www.habr.com