55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*****************************************************************************\
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** **
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** LCR **
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** **
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**---------------------------------------------------------------------------**
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** Copyright: Andreas Eversberg **
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** **
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** gsm audio **
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** **
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\*****************************************************************************/
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extern "C" {
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#include "/usr/include/gsm/gsm.h"
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/* create gsm instance */
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void *gsm_audio_create(void)
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{
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int value = 1;
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gsm handle;
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handle = gsm_create();
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if (handle)
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gsm_option(handle, 0/*GSM_OPT_WAV49*/, &value);
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return handle;
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}
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/* free gsm instance */
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void gsm_audio_destroy(void *arg)
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{
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gsm_destroy((gsm)arg);
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}
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/* decode frame into samples, return error */
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int gsm_audio_decode(void *arg, unsigned char *frame, signed short *samples)
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{
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// int value = 0;
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// gsm_option((gsm)arg, GSM_OPT_FRAME_INDEX, &value);
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return gsm_decode((gsm)arg, (gsm_byte *)frame, (gsm_signal *)samples);
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}
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/* encode samples into frame */
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void gsm_audio_encode(void *arg, signed short *samples, unsigned char *frame)
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{
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// int value = 0;
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// gsm_option((gsm)arg, GSM_OPT_FRAME_INDEX, &value);
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gsm_encode((gsm)arg, (gsm_signal *)samples, (gsm_byte *)frame);
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}
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} /* extern "C" */
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