37 static const int16_t
MACEtab1[] = {-13, 8, 76, 222, 222, 76, 8, -13};
39 static const int16_t
MACEtab3[] = {-18, 140, 140, -18};
42 { 37, 116, 206, 330}, { 39, 121, 216, 346},
43 { 41, 127, 225, 361}, { 42, 132, 235, 377},
44 { 44, 137, 245, 392}, { 46, 144, 256, 410},
45 { 48, 150, 267, 428}, { 51, 157, 280, 449},
46 { 53, 165, 293, 470}, { 55, 172, 306, 490},
47 { 58, 179, 319, 511}, { 60, 187, 333, 534},
48 { 63, 195, 348, 557}, { 66, 205, 364, 583},
49 { 69, 214, 380, 609}, { 72, 223, 396, 635},
50 { 75, 233, 414, 663}, { 79, 244, 433, 694},
51 { 82, 254, 453, 725}, { 86, 265, 472, 756},
52 { 90, 278, 495, 792}, { 94, 290, 516, 826},
53 { 98, 303, 538, 862}, { 102, 316, 562, 901},
54 { 107, 331, 588, 942}, { 112, 345, 614, 983},
55 { 117, 361, 641, 1027}, { 122, 377, 670, 1074},
56 { 127, 394, 701, 1123}, { 133, 411, 732, 1172},
57 { 139, 430, 764, 1224}, { 145, 449, 799, 1280},
58 { 152, 469, 835, 1337}, { 159, 490, 872, 1397},
59 { 166, 512, 911, 1459}, { 173, 535, 951, 1523},
60 { 181, 558, 993, 1590}, { 189, 584, 1038, 1663},
61 { 197, 610, 1085, 1738}, { 206, 637, 1133, 1815},
62 { 215, 665, 1183, 1895}, { 225, 695, 1237, 1980},
63 { 235, 726, 1291, 2068}, { 246, 759, 1349, 2161},
64 { 257, 792, 1409, 2257}, { 268, 828, 1472, 2357},
65 { 280, 865, 1538, 2463}, { 293, 903, 1606, 2572},
66 { 306, 944, 1678, 2688}, { 319, 986, 1753, 2807},
67 { 334, 1030, 1832, 2933}, { 349, 1076, 1914, 3065},
68 { 364, 1124, 1999, 3202}, { 380, 1174, 2088, 3344},
69 { 398, 1227, 2182, 3494}, { 415, 1281, 2278, 3649},
70 { 434, 1339, 2380, 3811}, { 453, 1398, 2486, 3982},
71 { 473, 1461, 2598, 4160}, { 495, 1526, 2714, 4346},
72 { 517, 1594, 2835, 4540}, { 540, 1665, 2961, 4741},
73 { 564, 1740, 3093, 4953}, { 589, 1818, 3232, 5175},
74 { 615, 1898, 3375, 5405}, { 643, 1984, 3527, 5647},
75 { 671, 2072, 3683, 5898}, { 701, 2164, 3848, 6161},
76 { 733, 2261, 4020, 6438}, { 766, 2362, 4199, 6724},
77 { 800, 2467, 4386, 7024}, { 836, 2578, 4583, 7339},
78 { 873, 2692, 4786, 7664}, { 912, 2813, 5001, 8008},
79 { 952, 2938, 5223, 8364}, { 995, 3070, 5457, 8739},
80 { 1039, 3207, 5701, 9129}, { 1086, 3350, 5956, 9537},
81 { 1134, 3499, 6220, 9960}, { 1185, 3655, 6497, 10404},
82 { 1238, 3818, 6788, 10869}, { 1293, 3989, 7091, 11355},
83 { 1351, 4166, 7407, 11861}, { 1411, 4352, 7738, 12390},
84 { 1474, 4547, 8084, 12946}, { 1540, 4750, 8444, 13522},
85 { 1609, 4962, 8821, 14126}, { 1680, 5183, 9215, 14756},
86 { 1756, 5415, 9626, 15415}, { 1834, 5657, 10057, 16104},
87 { 1916, 5909, 10505, 16822}, { 2001, 6173, 10975, 17574},
88 { 2091, 6448, 11463, 18356}, { 2184, 6736, 11974, 19175},
89 { 2282, 7037, 12510, 20032}, { 2383, 7351, 13068, 20926},
90 { 2490, 7679, 13652, 21861}, { 2601, 8021, 14260, 22834},
91 { 2717, 8380, 14897, 23854}, { 2838, 8753, 15561, 24918},
92 { 2965, 9144, 16256, 26031}, { 3097, 9553, 16982, 27193},
93 { 3236, 9979, 17740, 28407}, { 3380, 10424, 18532, 29675},
94 { 3531, 10890, 19359, 31000}, { 3688, 11375, 20222, 32382},
95 { 3853, 11883, 21125, 32767}, { 4025, 12414, 22069, 32767},
96 { 4205, 12967, 23053, 32767}, { 4392, 13546, 24082, 32767},
97 { 4589, 14151, 25157, 32767}, { 4793, 14783, 26280, 32767},
98 { 5007, 15442, 27452, 32767}, { 5231, 16132, 28678, 32767},
99 { 5464, 16851, 29957, 32767}, { 5708, 17603, 31294, 32767},
100 { 5963, 18389, 32691, 32767}, { 6229, 19210, 32767, 32767},
101 { 6507, 20067, 32767, 32767}, { 6797, 20963, 32767, 32767},
102 { 7101, 21899, 32767, 32767}, { 7418, 22876, 32767, 32767},
103 { 7749, 23897, 32767, 32767}, { 8095, 24964, 32767, 32767},
104 { 8456, 26078, 32767, 32767}, { 8833, 27242, 32767, 32767},
105 { 9228, 28457, 32767, 32767}, { 9639, 29727, 32767, 32767}
109 { 64, 216}, { 67, 226}, { 70, 236}, { 74, 246},
110 { 77, 257}, { 80, 268}, { 84, 280}, { 88, 294},
111 { 92, 307}, { 96, 321}, { 100, 334}, { 104, 350},
112 { 109, 365}, { 114, 382}, { 119, 399}, { 124, 416},
113 { 130, 434}, { 136, 454}, { 142, 475}, { 148, 495},
114 { 155, 519}, { 162, 541}, { 169, 564}, { 176, 590},
115 { 185, 617}, { 193, 644}, { 201, 673}, { 210, 703},
116 { 220, 735}, { 230, 767}, { 240, 801}, { 251, 838},
117 { 262, 876}, { 274, 914}, { 286, 955}, { 299, 997},
118 { 312, 1041}, { 326, 1089}, { 341, 1138}, { 356, 1188},
119 { 372, 1241}, { 388, 1297}, { 406, 1354}, { 424, 1415},
120 { 443, 1478}, { 462, 1544}, { 483, 1613}, { 505, 1684},
121 { 527, 1760}, { 551, 1838}, { 576, 1921}, { 601, 2007},
122 { 628, 2097}, { 656, 2190}, { 686, 2288}, { 716, 2389},
123 { 748, 2496}, { 781, 2607}, { 816, 2724}, { 853, 2846},
124 { 891, 2973}, { 930, 3104}, { 972, 3243}, { 1016, 3389},
125 { 1061, 3539}, { 1108, 3698}, { 1158, 3862}, { 1209, 4035},
126 { 1264, 4216}, { 1320, 4403}, { 1379, 4599}, { 1441, 4806},
127 { 1505, 5019}, { 1572, 5244}, { 1642, 5477}, { 1715, 5722},
128 { 1792, 5978}, { 1872, 6245}, { 1955, 6522}, { 2043, 6813},
129 { 2134, 7118}, { 2229, 7436}, { 2329, 7767}, { 2432, 8114},
130 { 2541, 8477}, { 2655, 8854}, { 2773, 9250}, { 2897, 9663},
131 { 3026, 10094}, { 3162, 10546}, { 3303, 11016}, { 3450, 11508},
132 { 3604, 12020}, { 3765, 12556}, { 3933, 13118}, { 4108, 13703},
133 { 4292, 14315}, { 4483, 14953}, { 4683, 15621}, { 4892, 16318},
134 { 5111, 17046}, { 5339, 17807}, { 5577, 18602}, { 5826, 19433},
135 { 6086, 20300}, { 6358, 21205}, { 6642, 22152}, { 6938, 23141},
136 { 7248, 24173}, { 7571, 25252}, { 7909, 26380}, { 8262, 27557},
137 { 8631, 28786}, { 9016, 30072}, { 9419, 31413}, { 9839, 32767},
138 { 10278, 32767}, { 10737, 32767}, { 11216, 32767}, { 11717, 32767},
139 { 12240, 32767}, { 12786, 32767}, { 13356, 32767}, { 13953, 32767},
140 { 14576, 32767}, { 15226, 32767}, { 15906, 32767}, { 16615, 32767}
143 static const struct {
151 #define QT_8S_2_16S(x) (((x) & 0xFF00) | (((x) >> 8) & 0xFF))
181 current =
tabs[tab_idx].tab2[((chd->
index & 0x7f0) >> 4) *
tabs[tab_idx].stride + val];
183 current = - 1 -
tabs[tab_idx].tab2[((chd->
index & 0x7f0) >> 4)*
tabs[tab_idx].stride + 2*
tabs[tab_idx].stride-val-1];
185 if (( chd->
index +=
tabs[tab_idx].tab1[val]-(chd->
index >> 5) ) < 0)
194 int16_t current =
read_table(chd, val, tab_idx);
198 chd->
level = current - (current >> 3);
204 int16_t current =
read_table(chd, val, tab_idx);
206 if ((chd->
previous ^ current) >= 0) {
209 if (chd->
factor - 314 < -32768)
221 ((chd->
prev2-current) >> 2));
223 ((chd->
prev2-current) >> 2));
243 int *got_frame_ptr,
AVPacket *avpkt)
246 int buf_size = avpkt->
size;
260 for(i = 0; i < avctx->channels; i++) {
261 int16_t *output = samples[i];
263 for (j=0; j < buf_size / (avctx->
channels << is_mace3); j++)
264 for (k=0; k < (1 << is_mace3); k++) {
265 uint8_t pkt = buf[(i << is_mace3) +
266 (j*avctx->
channels << is_mace3) + k];
268 uint8_t val[2][3] = {{pkt >> 5, (pkt >> 3) & 3, pkt & 7 },
269 {pkt & 7 , (pkt >> 3) & 3, pkt >> 5}};
271 for (l=0; l < 3; l++) {
273 chomp3(&ctx->
chd[i], output, val[1][l], l);
275 chomp6(&ctx->
chd[i], output, val[0][l], l);
277 output += 1 << (1-is_mace3);
This structure describes decoded (raw) audio or video data.
AVFrame * coded_frame
the picture in the bitstream
static const int16_t MACEtab1[]
static const int16_t MACEtab3[]
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
enum AVSampleFormat sample_fmt
audio sample format
static void chomp6(ChannelData *chd, int16_t *output, uint8_t val, int tab_idx)
static int mace_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static int init(AVCodecParserContext *s)
struct MACEContext MACEContext
static void chomp3(ChannelData *chd, int16_t *output, uint8_t val, int tab_idx)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static int16_t read_table(ChannelData *chd, uint8_t val, int tab_idx)
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
static av_cold int mace_decode_init(AVCodecContext *avctx)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Get a buffer for a frame.
static const int16_t MACEtab2[][4]
struct ChannelData ChannelData
main external API structure.
static const struct @47 tabs[]
void avcodec_get_frame_defaults(AVFrame *frame)
Set the fields of the given AVFrame to default values.
common internal api header.
common internal and external API header
AVSampleFormat
Audio Sample Formats.
int channels
number of audio channels
static int16_t mace_broken_clip_int16(int n)
MACE version of av_clip_int16().
uint8_t ** extended_data
pointers to the data planes/channels.
This structure stores compressed data.
int nb_samples
number of audio samples (per channel) described by this frame
static const int16_t MACEtab4[][2]