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authorMamadou DIOP <bossiel@yahoo.fr>2016-02-23 22:00:35 +0100
committerMamadou DIOP <bossiel@yahoo.fr>2016-02-23 22:00:35 +0100
commit50dfb4359619563012997bc3ddafb7667741066c (patch)
treedb234c1edc3240a653363b5735fc4077af4b8720 /tinyDAV/src/codecs/g722/g722_encode.c
parent94b2219209038e05dd26395f6fb700be4d1062c0 (diff)
downloaddoubango-50dfb4359619563012997bc3ddafb7667741066c.zip
doubango-50dfb4359619563012997bc3ddafb7667741066c.tar.gz
Add new QoS implementation
Code formatting
Diffstat (limited to 'tinyDAV/src/codecs/g722/g722_encode.c')
-rwxr-xr-xtinyDAV/src/codecs/g722/g722_encode.c171
1 files changed, 83 insertions, 88 deletions
diff --git a/tinyDAV/src/codecs/g722/g722_encode.c b/tinyDAV/src/codecs/g722/g722_encode.c
index 68758eb..a0bf821 100755
--- a/tinyDAV/src/codecs/g722/g722_encode.c
+++ b/tinyDAV/src/codecs/g722/g722_encode.c
@@ -9,7 +9,7 @@
*
* All rights reserved.
*
- * Despite my general liking of the GPL, I place my own contributions
+ * Despite my general liking of the GPL, I place my own contributions
* to this code in the public domain for the benefit of all mankind -
* even the slimy ones who might try to proprietize my work and use it
* to my detriment.
@@ -47,10 +47,12 @@ static __inline int16_t saturate(int32_t amp)
/* Hopefully this is optimised for the common case - not clipping */
amp16 = (int16_t) amp;
- if (amp == amp16)
+ if (amp == amp16) {
return amp16;
- if (amp > TDAV_INT16_MAX)
+ }
+ if (amp > TDAV_INT16_MAX) {
return TDAV_INT16_MAX;
+ }
return TDAV_INT16_MIN;
}
/*- End of function --------------------------------------------------------*/
@@ -70,19 +72,23 @@ static void block4(g722_encode_state_t *s, int band, int d)
s->band[band].p[0] = saturate(s->band[band].sz + d);
/* Block 4, UPPOL2 */
- for (i = 0; i < 3; i++)
+ for (i = 0; i < 3; i++) {
s->band[band].sg[i] = s->band[band].p[i] >> 15;
+ }
wd1 = saturate(s->band[band].a[1] << 2);
wd2 = (s->band[band].sg[0] == s->band[band].sg[1]) ? -wd1 : wd1;
- if (wd2 > 32767)
+ if (wd2 > 32767) {
wd2 = 32767;
+ }
wd3 = (wd2 >> 7) + ((s->band[band].sg[0] == s->band[band].sg[2]) ? 128 : -128);
wd3 += (s->band[band].a[2]*32512) >> 15;
- if (wd3 > 12288)
+ if (wd3 > 12288) {
wd3 = 12288;
- else if (wd3 < -12288)
+ }
+ else if (wd3 < -12288) {
wd3 = -12288;
+ }
s->band[band].ap[2] = wd3;
/* Block 4, UPPOL1 */
@@ -93,16 +99,17 @@ static void block4(g722_encode_state_t *s, int band, int d)
s->band[band].ap[1] = saturate(wd1 + wd2);
wd3 = saturate(15360 - s->band[band].ap[2]);
- if (s->band[band].ap[1] > wd3)
+ if (s->band[band].ap[1] > wd3) {
s->band[band].ap[1] = wd3;
- else if (s->band[band].ap[1] < -wd3)
+ }
+ else if (s->band[band].ap[1] < -wd3) {
s->band[band].ap[1] = -wd3;
+ }
/* Block 4, UPZERO */
wd1 = (d == 0) ? 0 : 128;
s->band[band].sg[0] = d >> 15;
- for (i = 1; i < 7; i++)
- {
+ for (i = 1; i < 7; i++) {
s->band[band].sg[i] = s->band[band].d[i] >> 15;
wd2 = (s->band[band].sg[i] == s->band[band].sg[0]) ? wd1 : -wd1;
wd3 = (s->band[band].b[i]*32640) >> 15;
@@ -110,14 +117,12 @@ static void block4(g722_encode_state_t *s, int band, int d)
}
/* Block 4, DELAYA */
- for (i = 6; i > 0; i--)
- {
+ for (i = 6; i > 0; i--) {
s->band[band].d[i] = s->band[band].d[i - 1];
s->band[band].b[i] = s->band[band].bp[i];
}
-
- for (i = 2; i > 0; i--)
- {
+
+ for (i = 2; i > 0; i--) {
s->band[band].r[i] = s->band[band].r[i - 1];
s->band[band].p[i] = s->band[band].p[i - 1];
s->band[band].a[i] = s->band[band].ap[i];
@@ -132,8 +137,7 @@ static void block4(g722_encode_state_t *s, int band, int d)
/* Block 4, FILTEZ */
s->band[band].sz = 0;
- for (i = 6; i > 0; i--)
- {
+ for (i = 6; i > 0; i--) {
wd1 = saturate(s->band[band].d[i] + s->band[band].d[i]);
s->band[band].sz += (s->band[band].b[i]*wd1) >> 15;
}
@@ -146,24 +150,30 @@ static void block4(g722_encode_state_t *s, int band, int d)
g722_encode_state_t *g722_encode_init(g722_encode_state_t *s, int rate, int options)
{
- if (s == NULL)
- {
- if ((s = (g722_encode_state_t *) malloc(sizeof(*s))) == NULL)
+ if (s == NULL) {
+ if ((s = (g722_encode_state_t *) malloc(sizeof(*s))) == NULL) {
return NULL;
+ }
}
memset(s, 0, sizeof(*s));
- if (rate == 48000)
+ if (rate == 48000) {
s->bits_per_sample = 6;
- else if (rate == 56000)
+ }
+ else if (rate == 56000) {
s->bits_per_sample = 7;
- else
+ }
+ else {
s->bits_per_sample = 8;
- if ((options & G722_SAMPLE_RATE_8000))
+ }
+ if ((options & G722_SAMPLE_RATE_8000)) {
s->eight_k = TRUE;
- if ((options & G722_PACKED) && s->bits_per_sample != 8)
+ }
+ if ((options & G722_PACKED) && s->bits_per_sample != 8) {
s->packed = TRUE;
- else
+ }
+ else {
s->packed = FALSE;
+ }
s->band[0].det = 32;
s->band[1].det = 8;
return s;
@@ -197,57 +207,48 @@ int16_t limitValues (int16_t rl)
int g722_encode(g722_encode_state_t *s, uint8_t g722_data[],
const int16_t amp[], int len)
{
- static const int q6[32] =
- {
- 0, 35, 72, 110, 150, 190, 233, 276,
- 323, 370, 422, 473, 530, 587, 650, 714,
- 786, 858, 940, 1023, 1121, 1219, 1339, 1458,
+ static const int q6[32] = {
+ 0, 35, 72, 110, 150, 190, 233, 276,
+ 323, 370, 422, 473, 530, 587, 650, 714,
+ 786, 858, 940, 1023, 1121, 1219, 1339, 1458,
1612, 1765, 1980, 2195, 2557, 2919, 0, 0
};
- static const int iln[32] =
- {
- 0, 63, 62, 31, 30, 29, 28, 27,
+ static const int iln[32] = {
+ 0, 63, 62, 31, 30, 29, 28, 27,
26, 25, 24, 23, 22, 21, 20, 19,
18, 17, 16, 15, 14, 13, 12, 11,
10, 9, 8, 7, 6, 5, 4, 0
};
- static const int ilp[32] =
- {
- 0, 61, 60, 59, 58, 57, 56, 55,
+ static const int ilp[32] = {
+ 0, 61, 60, 59, 58, 57, 56, 55,
54, 53, 52, 51, 50, 49, 48, 47,
46, 45, 44, 43, 42, 41, 40, 39,
38, 37, 36, 35, 34, 33, 32, 0
};
- static const int wl[8] =
- {
+ static const int wl[8] = {
-60, -30, 58, 172, 334, 538, 1198, 3042
};
- static const int rl42[16] =
- {
+ static const int rl42[16] = {
0, 7, 6, 5, 4, 3, 2, 1, 7, 6, 5, 4, 3, 2, 1, 0
};
- static const int ilb[32] =
- {
+ static const int ilb[32] = {
2048, 2093, 2139, 2186, 2233, 2282, 2332,
2383, 2435, 2489, 2543, 2599, 2656, 2714,
2774, 2834, 2896, 2960, 3025, 3091, 3158,
3228, 3298, 3371, 3444, 3520, 3597, 3676,
3756, 3838, 3922, 4008
};
- static const int qm4[16] =
- {
- 0, -20456, -12896, -8968,
- -6288, -4240, -2584, -1200,
- 20456, 12896, 8968, 6288,
- 4240, 2584, 1200, 0
+ static const int qm4[16] = {
+ 0, -20456, -12896, -8968,
+ -6288, -4240, -2584, -1200,
+ 20456, 12896, 8968, 6288,
+ 4240, 2584, 1200, 0
};
- static const int qm2[4] =
- {
+ static const int qm2[4] = {
-7408, -1616, 7408, 1616
};
- static const int qmf_coeffs[12] =
- {
- 3, -11, 12, 32, -210, 951, 3876, -805, 362, -156, 53, -11,
+ static const int qmf_coeffs[12] = {
+ 3, -11, 12, 32, -210, 951, 3876, -805, 362, -156, 53, -11,
};
static const int ihn[3] = {0, 1, 0};
static const int ihp[3] = {0, 3, 2};
@@ -281,34 +282,29 @@ int g722_encode(g722_encode_state_t *s, uint8_t g722_data[],
g722_bytes = 0;
xhigh = 0;
- for (j = 0; j < len; )
- {
- if (s->itu_test_mode)
- {
+ for (j = 0; j < len; ) {
+ if (s->itu_test_mode) {
xlow =
- xhigh = amp[j++] >> 1;
+ xhigh = amp[j++] >> 1;
}
- else
- {
- if (s->eight_k)
- {
+ else {
+ if (s->eight_k) {
/* We shift by 1 to allow for the 15 bit input to the G.722 algorithm. */
xlow = amp[j++] >> 1;
}
- else
- {
+ else {
/* Apply the transmit QMF */
/* Shuffle the buffer down */
- for (i = 0; i < 22; i++)
+ for (i = 0; i < 22; i++) {
s->x[i] = s->x[i + 2];
+ }
s->x[22] = amp[j++];
s->x[23] = amp[j++];
-
+
/* Discard every other QMF output */
sumeven = 0;
sumodd = 0;
- for (i = 0; i < 12; i++)
- {
+ for (i = 0; i < 12; i++) {
sumodd += s->x[2*i]*qmf_coeffs[i];
sumeven += s->x[2*i + 1]*qmf_coeffs[11 - i];
}
@@ -334,11 +330,11 @@ int g722_encode(g722_encode_state_t *s, uint8_t g722_data[],
/* Block 1L, QUANTL */
wd = (el >= 0) ? el : -(el + 1);
- for (i = 1; i < 30; i++)
- {
+ for (i = 1; i < 30; i++) {
wd1 = (q6[i]*s->band[0].det) >> 12;
- if (wd < wd1)
+ if (wd < wd1) {
break;
+ }
}
ilow = (el < 0) ? iln[i] : ilp[i];
@@ -351,10 +347,12 @@ int g722_encode(g722_encode_state_t *s, uint8_t g722_data[],
il4 = rl42[ril];
wd = (s->band[0].nb*127) >> 7;
s->band[0].nb = wd + wl[il4];
- if (s->band[0].nb < 0)
+ if (s->band[0].nb < 0) {
s->band[0].nb = 0;
- else if (s->band[0].nb > 18432)
+ }
+ else if (s->band[0].nb > 18432) {
s->band[0].nb = 18432;
+ }
/* Block 3L, SCALEL */
wd1 = (s->band[0].nb >> 6) & 31;
@@ -363,14 +361,12 @@ int g722_encode(g722_encode_state_t *s, uint8_t g722_data[],
s->band[0].det = wd3 << 2;
block4(s, 0, dlow);
-
- if (s->eight_k)
- {
+
+ if (s->eight_k) {
/* Just leave the high bits as zero */
code = (0xC0 | ilow) >> (8 - s->bits_per_sample);
}
- else
- {
+ else {
/* Block 1H, SUBTRA */
eh = saturate(xhigh - s->band[1].s);
@@ -388,10 +384,12 @@ int g722_encode(g722_encode_state_t *s, uint8_t g722_data[],
ih2 = rh2[ihigh];
wd = (s->band[1].nb*127) >> 7;
s->band[1].nb = wd + wh[ih2];
- if (s->band[1].nb < 0)
+ if (s->band[1].nb < 0) {
s->band[1].nb = 0;
- else if (s->band[1].nb > 22528)
+ }
+ else if (s->band[1].nb > 22528) {
s->band[1].nb = 22528;
+ }
/* Block 3H, SCALEH */
wd1 = (s->band[1].nb >> 6) & 31;
@@ -403,20 +401,17 @@ int g722_encode(g722_encode_state_t *s, uint8_t g722_data[],
code = ((ihigh << 6) | ilow) >> (8 - s->bits_per_sample);
}
- if (s->packed)
- {
+ if (s->packed) {
/* Pack the code bits */
s->out_buffer |= (code << s->out_bits);
s->out_bits += s->bits_per_sample;
- if (s->out_bits >= 8)
- {
+ if (s->out_bits >= 8) {
g722_data[g722_bytes++] = (uint8_t) (s->out_buffer & 0xFF);
s->out_bits -= 8;
s->out_buffer >>= 8;
}
}
- else
- {
+ else {
g722_data[g722_bytes++] = (uint8_t) code;
}
}
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