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author | Mamadou DIOP <bossiel@yahoo.fr> | 2016-02-23 22:00:35 +0100 |
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committer | Mamadou DIOP <bossiel@yahoo.fr> | 2016-02-23 22:00:35 +0100 |
commit | 50dfb4359619563012997bc3ddafb7667741066c (patch) | |
tree | db234c1edc3240a653363b5735fc4077af4b8720 /tinyDAV/src/codecs/g722/g722_encode.c | |
parent | 94b2219209038e05dd26395f6fb700be4d1062c0 (diff) | |
download | doubango-50dfb4359619563012997bc3ddafb7667741066c.zip doubango-50dfb4359619563012997bc3ddafb7667741066c.tar.gz |
Add new QoS implementation
Code formatting
Diffstat (limited to 'tinyDAV/src/codecs/g722/g722_encode.c')
-rwxr-xr-x | tinyDAV/src/codecs/g722/g722_encode.c | 171 |
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; } } |