\*****************************************************************************/
extern "C" {
-#include "/usr/local/include/gsm.h"
+#include "libgsmfr/inc/gsm.h"
/* create gsm instance */
-void *gsm_audio_create(void)
+void *gsm_fr_create(void)
{
int value = 1;
gsm handle;
handle = gsm_create();
if (handle)
- gsm_option(handle, GSM_OPT_WAV49, &value);
+ gsm_option(handle, 0/*GSM_OPT_WAV49*/, &value);
return handle;
}
/* free gsm instance */
-void gsm_audio_destroy(void *arg)
+void gsm_fr_destroy(void *arg)
{
gsm_destroy((gsm)arg);
}
/* decode frame into samples, return error */
-int gsm_audio_decode(void *arg, unsigned char *frame, signed short *samples)
+int gsm_fr_decode(void *arg, unsigned char *frame, signed short *samples)
{
- int value = 0;
+// int value = 0;
- gsm_option((gsm)arg, GSM_OPT_FRAME_INDEX, &value);
+// gsm_option((gsm)arg, GSM_OPT_FRAME_INDEX, &value);
return gsm_decode((gsm)arg, (gsm_byte *)frame, (gsm_signal *)samples);
}
/* encode samples into frame */
-void gsm_audio_encode(void *arg, signed short *samples, unsigned char *frame)
+void gsm_fr_encode(void *arg, signed short *samples, unsigned char *frame)
{
- int value = 0;
+// int value = 0;
- gsm_option((gsm)arg, GSM_OPT_FRAME_INDEX, &value);
+// gsm_option((gsm)arg, GSM_OPT_FRAME_INDEX, &value);
gsm_encode((gsm)arg, (gsm_signal *)samples, (gsm_byte *)frame);
}
+#ifdef WITH_GSMAMR
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <opencore-amrnb/interf_dec.h>
+#include <opencore-amrnb/interf_enc.h>
+
+
+struct codec_efr_state {
+ void *encoder;
+ void *decoder;
+};
+
+/* create gsm instance */
+void *gsm_amr_create(void)
+{
+ struct codec_efr_state *st;
+
+ st = (struct codec_efr_state *)calloc(1, sizeof(*st));
+ if (!st)
+ return NULL;
+
+ st->encoder = Encoder_Interface_init(0);
+ st->decoder = Decoder_Interface_init();
+
+ return (void *)st;
}
+/* free gsm instance */
+void gsm_amr_destroy(void *arg)
+{
+ struct codec_efr_state *st = (struct codec_efr_state *)arg;
+
+ Decoder_Interface_exit(st->decoder);
+ Encoder_Interface_exit(st->encoder);
+
+ return;
+}
+
+enum Mode amr_mode[8] = {
+ MR475, /* 4.75 kbps */
+ MR515, /* 5.15 kbps */
+ MR59, /* 5.90 kbps */
+ MR67, /* 6.70 kbps */
+ MR74, /* 7.40 kbps */
+ MR795, /* 7.95 kbps */
+ MR102, /* 10.2 kbps */
+ MR122, /* 12.2 kbps */
+};
+
+/* decode frame into samples, return error */
+int gsm_amr_decode(void *arg, unsigned char *frame, signed short *samples)
+{
+ struct codec_efr_state *st = (struct codec_efr_state *)arg;
+
+ Decoder_Interface_Decode(
+ st->decoder,
+ (const unsigned char*) frame + 1,
+ (short *) samples,
+ 0
+ );
+
+ return 0;
+}
+
+/* encode samples into frame */
+int gsm_amr_encode(void *arg, signed short *samples, unsigned char *frame, int mode)
+{
+ struct codec_efr_state *st = (struct codec_efr_state *)arg;
+ int rv;
+
+ rv = Encoder_Interface_Encode(
+ st->encoder,
+ amr_mode[mode],
+ (const short*) samples,
+ (unsigned char*) frame + 1,
+ 1
+ );
+
+ frame[0] = 0xf0; /* no request */
+
+ return rv;
+}
+
+const unsigned short gsm690_12_2_bitorder[244] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ 10, 11, 12, 13, 14, 23, 15, 16, 17, 18,
+ 19, 20, 21, 22, 24, 25, 26, 27, 28, 38,
+ 141, 39, 142, 40, 143, 41, 144, 42, 145, 43,
+ 146, 44, 147, 45, 148, 46, 149, 47, 97, 150,
+ 200, 48, 98, 151, 201, 49, 99, 152, 202, 86,
+ 136, 189, 239, 87, 137, 190, 240, 88, 138, 191,
+ 241, 91, 194, 92, 195, 93, 196, 94, 197, 95,
+ 198, 29, 30, 31, 32, 33, 34, 35, 50, 100,
+ 153, 203, 89, 139, 192, 242, 51, 101, 154, 204,
+ 55, 105, 158, 208, 90, 140, 193, 243, 59, 109,
+ 162, 212, 63, 113, 166, 216, 67, 117, 170, 220,
+ 36, 37, 54, 53, 52, 58, 57, 56, 62, 61,
+ 60, 66, 65, 64, 70, 69, 68, 104, 103, 102,
+ 108, 107, 106, 112, 111, 110, 116, 115, 114, 120,
+ 119, 118, 157, 156, 155, 161, 160, 159, 165, 164,
+ 163, 169, 168, 167, 173, 172, 171, 207, 206, 205,
+ 211, 210, 209, 215, 214, 213, 219, 218, 217, 223,
+ 222, 221, 73, 72, 71, 76, 75, 74, 79, 78,
+ 77, 82, 81, 80, 85, 84, 83, 123, 122, 121,
+ 126, 125, 124, 129, 128, 127, 132, 131, 130, 135,
+ 134, 133, 176, 175, 174, 179, 178, 177, 182, 181,
+ 180, 185, 184, 183, 188, 187, 186, 226, 225, 224,
+ 229, 228, 227, 232, 231, 230, 235, 234, 233, 238,
+ 237, 236, 96, 199,
+};
+
+/* decode frame into samples, return error */
+int gsm_efr_decode(void *arg, unsigned char *frame, signed short *samples)
+{
+ struct codec_efr_state *st = (struct codec_efr_state *)arg;
+ unsigned char cod[32], bit;
+ int i, si;
+
+ cod[0] = 0x3c; /* good AMR 12,2 frame */
+ memset(cod + 1, 0, 31);
+
+ for (i = 0; i < 244; i++) {
+ si = gsm690_12_2_bitorder[i] + 4;
+ bit = (frame[si >> 3] >> (7 - (si & 7))) & 1;
+ cod[(i >> 3) + 1] |= (bit << (7 - (i & 7)));
+ }
+
+ Decoder_Interface_Decode(
+ st->decoder,
+ (const unsigned char*) cod,
+ (short *) samples,
+ 0
+ );
+
+ return 0;
+}
+
+/* encode samples into frame */
+int gsm_efr_encode(void *arg, signed short *samples, unsigned char *frame)
+{
+ struct codec_efr_state *st = (struct codec_efr_state *)arg;
+ int rv;
+ unsigned char cod[32], bit;
+ int i, di;
+
+ rv = Encoder_Interface_Encode(
+ st->encoder,
+ MR122,
+ (const short*) samples,
+ (unsigned char*) cod,
+ 1
+ );
+
+ if (cod[0] != 0x3c)
+ return -1;
+
+ frame[0] = 0xc0;
+ memset(frame + 1, 0, 30);
+
+ for (i = 0; i < 244; i++) {
+ di = gsm690_12_2_bitorder[i] + 4;
+ bit = (cod[(i >> 3) + 1] >> (7 - (i & 7))) & 1;
+ frame[di >> 3] |= (bit << (7 - (di & 7)));
+ }
+ return rv;
+}
+
+#endif
+
+} /* extern "C" */
+
projects / lcr.git / blobdiff