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)) 180 current =
tabs[tab_idx].tab2[((chd->
index & 0x7f0) >> 4) *
tabs[tab_idx].stride +
val];
182 current = - 1 -
tabs[tab_idx].tab2[((chd->
index & 0x7f0) >> 4)*
tabs[tab_idx].stride + 2*
tabs[tab_idx].stride-val-1];
184 if (( chd->
index +=
tabs[tab_idx].tab1[val]-(chd->
index >> 5) ) < 0)
193 int16_t current =
read_table(chd, val, tab_idx);
197 chd->
level = current - (current >> 3);
203 int16_t current =
read_table(chd, val, tab_idx);
205 if ((chd->
previous ^ current) >= 0) {
208 if (chd->
factor - 314 < -32768)
220 ((chd->
prev2-current) >> 2));
222 ((chd->
prev2-current) >> 2));
237 int *got_frame_ptr,
AVPacket *avpkt)
241 int buf_size = avpkt->
size;
247 if (buf_size % (avctx->
channels << is_mace3)) {
249 buf_size -= buf_size % (avctx->
channels << is_mace3);
260 for(i = 0; i < avctx->
channels; i++) {
263 for (j=0; j < buf_size / (avctx->
channels << is_mace3); j++)
264 for (k=0; k < (1 << is_mace3); k++) {
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);
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static av_cold int init(AVCodecContext *avctx)
static const int16_t MACEtab1[]
static const int16_t MACEtab3[]
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
enum AVSampleFormat sample_fmt
audio sample format
static void chomp6(ChannelData *chd, int16_t *output, uint8_t val, int tab_idx)
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce output
static int mace_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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)
const char * name
Name of the codec implementation.
static av_cold int mace_decode_init(AVCodecContext *avctx)
static const struct @102 tabs[]
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
static const int16_t MACEtab2[][4]
Libavcodec external API header.
AVSampleFormat
Audio sample formats.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
GLint GLenum GLboolean GLsizei stride
common internal api header.
common internal and external API header
int channels
number of audio channels
static int16_t mace_broken_clip_int16(int n)
MACE version of av_clip_int16().
static enum AVSampleFormat sample_fmts[]
Filter the word “frame” indicates either a video frame or a group of audio samples
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
uint8_t ** extended_data
pointers to the data planes/channels.
static double val(void *priv, double ch)
This structure stores compressed data.
int nb_samples
number of audio samples (per channel) described by this frame
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static const int16_t MACEtab4[][2]