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aptx: implement the aptX HD bluetooth codec

This commit is contained in:
Aurelien Jacobs 2018-01-06 17:11:48 +01:00
parent 96b217f5e8
commit 6fd110a094
8 changed files with 343 additions and 29 deletions
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2
Changelog
View File

@ -11,7 +11,7 @@ version <next>:
- TiVo ty/ty+ demuxer
- Intel QSV-accelerated MJPEG encoding
- PCE support for extended channel layouts in the AAC encoder
- native aptX encoder and decoder
- native aptX and aptX HD encoder and decoder
- Raw aptX muxer and demuxer
- NVIDIA NVDEC-accelerated H.264, HEVC, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding
- Intel QSV-accelerated overlay filter

2
configure vendored
View File

@ -2461,6 +2461,8 @@ apng_encoder_deps="zlib"
apng_encoder_select="llvidencdsp"
aptx_decoder_select="audio_frame_queue"
aptx_encoder_select="audio_frame_queue"
aptx_hd_decoder_select="audio_frame_queue"
aptx_hd_encoder_select="audio_frame_queue"
asv1_decoder_select="blockdsp bswapdsp idctdsp"
asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
asv2_decoder_select="blockdsp bswapdsp idctdsp"

2
doc/general.texi
View File

@ -1009,6 +1009,8 @@ following image formats are supported:
@tab QuickTime fourcc 'alac'
@item aptX @tab X @tab X
@tab Used in Bluetooth A2DP
@item aptX HD @tab X @tab X
@tab Used in Bluetooth A2DP
@item ATRAC1 @tab @tab X
@item ATRAC3 @tab @tab X
@item ATRAC3+ @tab @tab X

2
libavcodec/Makefile
View File

@ -190,6 +190,8 @@ OBJS-$(CONFIG_ANSI_DECODER) += ansi.o cga_data.o
OBJS-$(CONFIG_APE_DECODER) += apedec.o
OBJS-$(CONFIG_APTX_DECODER) += aptx.o
OBJS-$(CONFIG_APTX_ENCODER) += aptx.o
OBJS-$(CONFIG_APTX_HD_DECODER) += aptx.o
OBJS-$(CONFIG_APTX_HD_ENCODER) += aptx.o
OBJS-$(CONFIG_APNG_DECODER) += png.o pngdec.o pngdsp.o
OBJS-$(CONFIG_APNG_ENCODER) += png.o pngenc.o
OBJS-$(CONFIG_SSA_DECODER) += assdec.o ass.o

2
libavcodec/allcodecs.c
View File

@ -386,6 +386,8 @@ extern AVCodec ff_amrwb_decoder;
extern AVCodec ff_ape_decoder;
extern AVCodec ff_aptx_encoder;
extern AVCodec ff_aptx_decoder;
extern AVCodec ff_aptx_hd_encoder;
extern AVCodec ff_aptx_hd_decoder;
extern AVCodec ff_atrac1_decoder;
extern AVCodec ff_atrac3_decoder;
extern AVCodec ff_atrac3al_decoder;

354
libavcodec/aptx.c
View File

@ -89,6 +89,8 @@ typedef struct {
} Channel;
typedef struct {
int hd;
int block_size;
int32_t sync_idx;
Channel channels[NB_CHANNELS];
AudioFrameQueue afq;
@ -182,6 +184,205 @@ static const int16_t quantize_factor_select_offset_HF[5] = {
0, -8, 33, 95, 262,
};
static const int32_t hd_quantize_intervals_LF[257] = {
-2436, 2436, 7308, 12180, 17054, 21930, 26806, 31686,
36566, 41450, 46338, 51230, 56124, 61024, 65928, 70836,
75750, 80670, 85598, 90530, 95470, 100418, 105372, 110336,
115308, 120288, 125278, 130276, 135286, 140304, 145334, 150374,
155426, 160490, 165566, 170654, 175756, 180870, 185998, 191138,
196294, 201466, 206650, 211850, 217068, 222300, 227548, 232814,
238096, 243396, 248714, 254050, 259406, 264778, 270172, 275584,
281018, 286470, 291944, 297440, 302956, 308496, 314056, 319640,
325248, 330878, 336532, 342212, 347916, 353644, 359398, 365178,
370986, 376820, 382680, 388568, 394486, 400430, 406404, 412408,
418442, 424506, 430600, 436726, 442884, 449074, 455298, 461554,
467844, 474168, 480528, 486922, 493354, 499820, 506324, 512866,
519446, 526064, 532722, 539420, 546160, 552940, 559760, 566624,
573532, 580482, 587478, 594520, 601606, 608740, 615920, 623148,
630426, 637754, 645132, 652560, 660042, 667576, 675164, 682808,
690506, 698262, 706074, 713946, 721876, 729868, 737920, 746036,
754216, 762460, 770770, 779148, 787594, 796108, 804694, 813354,
822086, 830892, 839774, 848736, 857776, 866896, 876100, 885386,
894758, 904218, 913766, 923406, 933138, 942964, 952886, 962908,
973030, 983254, 993582, 1004020, 1014566, 1025224, 1035996, 1046886,
1057894, 1069026, 1080284, 1091670, 1103186, 1114838, 1126628, 1138558,
1150634, 1162858, 1175236, 1187768, 1200462, 1213320, 1226346, 1239548,
1252928, 1266490, 1280242, 1294188, 1308334, 1322688, 1337252, 1352034,
1367044, 1382284, 1397766, 1413494, 1429478, 1445728, 1462252, 1479058,
1496158, 1513562, 1531280, 1549326, 1567710, 1586446, 1605550, 1625034,
1644914, 1665208, 1685932, 1707108, 1728754, 1750890, 1773542, 1796732,
1820488, 1844840, 1869816, 1895452, 1921780, 1948842, 1976680, 2005338,
2034868, 2065322, 2096766, 2129260, 2162880, 2197708, 2233832, 2271352,
2310384, 2351050, 2393498, 2437886, 2484404, 2533262, 2584710, 2639036,
2696578, 2757738, 2822998, 2892940, 2968278, 3049896, 3138912, 3236760,
3345312, 3467068, 3605434, 3765154, 3952904, 4177962, 4452178, 4787134,
5187290, 5647128, 6159120, 6720518, 7332904, 8000032, 8726664, 9518152,
10380372,
};
static const int32_t hd_invert_quantize_dither_factors_LF[257] = {
2436, 2436, 2436, 2436, 2438, 2438, 2438, 2440,
2442, 2442, 2444, 2446, 2448, 2450, 2454, 2456,
2458, 2462, 2464, 2468, 2472, 2476, 2480, 2484,
2488, 2492, 2498, 2502, 2506, 2512, 2518, 2524,
2528, 2534, 2540, 2548, 2554, 2560, 2568, 2574,
2582, 2588, 2596, 2604, 2612, 2620, 2628, 2636,
2646, 2654, 2664, 2672, 2682, 2692, 2702, 2712,
2722, 2732, 2742, 2752, 2764, 2774, 2786, 2798,
2810, 2822, 2834, 2846, 2858, 2870, 2884, 2896,
2910, 2924, 2938, 2952, 2966, 2980, 2994, 3010,
3024, 3040, 3056, 3070, 3086, 3104, 3120, 3136,
3154, 3170, 3188, 3206, 3224, 3242, 3262, 3280,
3300, 3320, 3338, 3360, 3380, 3400, 3422, 3442,
3464, 3486, 3508, 3532, 3554, 3578, 3602, 3626,
3652, 3676, 3702, 3728, 3754, 3780, 3808, 3836,
3864, 3892, 3920, 3950, 3980, 4010, 4042, 4074,
4106, 4138, 4172, 4206, 4240, 4276, 4312, 4348,
4384, 4422, 4460, 4500, 4540, 4580, 4622, 4664,
4708, 4752, 4796, 4842, 4890, 4938, 4986, 5036,
5086, 5138, 5192, 5246, 5300, 5358, 5416, 5474,
5534, 5596, 5660, 5726, 5792, 5860, 5930, 6002,
6074, 6150, 6226, 6306, 6388, 6470, 6556, 6644,
6736, 6828, 6924, 7022, 7124, 7228, 7336, 7448,
7562, 7680, 7802, 7928, 8058, 8192, 8332, 8476,
8624, 8780, 8940, 9106, 9278, 9458, 9644, 9840,
10042, 10252, 10472, 10702, 10942, 11194, 11458, 11734,
12024, 12328, 12648, 12986, 13342, 13720, 14118, 14540,
14990, 15466, 15976, 16520, 17102, 17726, 18398, 19124,
19908, 20760, 21688, 22702, 23816, 25044, 26404, 27922,
29622, 31540, 33720, 36222, 39116, 42502, 46514, 51334,
57218, 64536, 73830, 85890, 101860, 123198, 151020, 183936,
216220, 243618, 268374, 293022, 319362, 347768, 378864, 412626, 449596,
};
static const int32_t hd_quantize_dither_factors_LF[256] = {
0, 0, 0, 1, 0, 0, 1, 1,
0, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 2, 1, 1, 2, 2, 2, 1,
2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 3,
2, 3, 2, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 4, 3, 4,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 5, 4, 4, 5,
4, 5, 5, 5, 5, 5, 5, 5,
5, 5, 6, 5, 5, 6, 5, 6,
6, 6, 6, 6, 6, 6, 6, 7,
6, 7, 7, 7, 7, 7, 7, 7,
7, 7, 8, 8, 8, 8, 8, 8,
8, 9, 9, 9, 9, 9, 9, 9,
10, 10, 10, 10, 10, 11, 11, 11,
11, 11, 12, 12, 12, 12, 13, 13,
13, 14, 14, 14, 15, 15, 15, 15,
16, 16, 17, 17, 17, 18, 18, 18,
19, 19, 20, 21, 21, 22, 22, 23,
23, 24, 25, 26, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37,
39, 40, 42, 43, 45, 47, 49, 51,
53, 55, 58, 60, 63, 66, 69, 73,
76, 80, 85, 89, 95, 100, 106, 113,
119, 128, 136, 146, 156, 168, 182, 196,
213, 232, 254, 279, 307, 340, 380, 425,
480, 545, 626, 724, 847, 1003, 1205, 1471,
1830, 2324, 3015, 3993, 5335, 6956, 8229, 8071,
6850, 6189, 6162, 6585, 7102, 7774, 8441, 9243,
};
static const int16_t hd_quantize_factor_select_offset_LF[257] = {
0, -22, -21, -21, -20, -20, -19, -19,
-18, -18, -17, -17, -16, -16, -15, -14,
-14, -13, -13, -12, -12, -11, -11, -10,
-10, -9, -9, -8, -7, -7, -6, -6,
-5, -5, -4, -4, -3, -3, -2, -1,
-1, 0, 0, 1, 1, 2, 2, 3,
4, 4, 5, 5, 6, 6, 7, 8,
8, 9, 9, 10, 11, 11, 12, 12,
13, 14, 14, 15, 15, 16, 17, 17,
18, 19, 19, 20, 20, 21, 22, 22,
23, 24, 24, 25, 26, 26, 27, 28,
28, 29, 30, 30, 31, 32, 33, 33,
34, 35, 35, 36, 37, 38, 38, 39,
40, 41, 41, 42, 43, 44, 44, 45,
46, 47, 48, 48, 49, 50, 51, 52,
52, 53, 54, 55, 56, 57, 58, 58,
59, 60, 61, 62, 63, 64, 65, 66,
67, 68, 69, 69, 70, 71, 72, 73,
74, 75, 77, 78, 79, 80, 81, 82,
83, 84, 85, 86, 87, 89, 90, 91,
92, 93, 94, 96, 97, 98, 99, 101,
102, 103, 105, 106, 107, 109, 110, 112,
113, 115, 116, 118, 119, 121, 122, 124,
125, 127, 129, 130, 132, 134, 136, 137,
139, 141, 143, 145, 147, 149, 151, 153,
155, 158, 160, 162, 164, 167, 169, 172,
174, 177, 180, 182, 185, 188, 191, 194,
197, 201, 204, 208, 211, 215, 219, 223,
227, 232, 236, 241, 246, 251, 257, 263,
269, 275, 283, 290, 298, 307, 317, 327,
339, 352, 367, 384, 404, 429, 458, 494,
522, 522, 522, 522, 522, 522, 522, 522, 522,
};
static const int32_t hd_quantize_intervals_MLF[33] = {
-21236, 21236, 63830, 106798, 150386, 194832, 240376, 287258,
335726, 386034, 438460, 493308, 550924, 611696, 676082, 744626,
817986, 896968, 982580, 1076118, 1179278, 1294344, 1424504, 1574386,
1751090, 1966260, 2240868, 2617662, 3196432, 4176450, 5658260, 7671068,
10380372,
};
static const int32_t hd_invert_quantize_dither_factors_MLF[33] = {
21236, 21236, 21360, 21608, 21978, 22468, 23076, 23806,
24660, 25648, 26778, 28070, 29544, 31228, 33158, 35386,
37974, 41008, 44606, 48934, 54226, 60840, 69320, 80564,
96140, 119032, 155576, 221218, 357552, 622468, 859344, 1153464, 1555840,
};
static const int32_t hd_quantize_dither_factors_MLF[32] = {
0, 31, 62, 93, 123, 152, 183, 214,
247, 283, 323, 369, 421, 483, 557, 647,
759, 900, 1082, 1323, 1654, 2120, 2811, 3894,
5723, 9136, 16411, 34084, 66229, 59219, 73530, 100594,
};
static const int16_t hd_quantize_factor_select_offset_MLF[33] = {
0, -21, -16, -12, -7, -2, 3, 8,
13, 19, 24, 30, 36, 43, 50, 57,
65, 74, 83, 93, 104, 117, 131, 147,
166, 189, 219, 259, 322, 427, 521, 521, 521,
};
static const int32_t hd_quantize_intervals_MHF[9] = {
-95044, 95044, 295844, 528780, 821332, 1226438, 1890540, 3344850, 6450664,
};
static const int32_t hd_invert_quantize_dither_factors_MHF[9] = {
95044, 95044, 105754, 127180, 165372, 39736, 424366, 1029946, 2075866,
};
static const int32_t hd_quantize_dither_factors_MHF[8] = {
0, 2678, 5357, 9548, -31409, 96158, 151395, 261480,
};
static const int16_t hd_quantize_factor_select_offset_MHF[9] = {
0, -17, 5, 30, 62, 105, 177, 334, 518,
};
static const int32_t hd_quantize_intervals_HF[17] = {
-45754, 45754, 138496, 234896, 337336, 448310, 570738, 708380,
866534, 1053262, 1281958, 1577438, 1993050, 2665984, 3900982, 5902844,
8897462,
};
static const int32_t hd_invert_quantize_dither_factors_HF[17] = {
45754, 45754, 46988, 49412, 53026, 57950, 64478, 73164,
84988, 101740, 126958, 168522, 247092, 425842, 809154, 1192708, 1801910,
};
static const int32_t hd_quantize_dither_factors_HF[16] = {
0, 309, 606, 904, 1231, 1632, 2172, 2956,
4188, 6305, 10391, 19643, 44688, 95828, 95889, 152301,
};
static const int16_t hd_quantize_factor_select_offset_HF[17] = {
0, -18, -8, 2, 13, 25, 38, 53,
70, 90, 115, 147, 192, 264, 398, 521, 521,
};
typedef const struct {
const int32_t *quantize_intervals;
const int32_t *invert_quantize_dither_factors;
@ -192,7 +393,8 @@ typedef const struct {
int32_t prediction_order;
} ConstTables;
static ConstTables tables[NB_SUBBANDS] = {
static ConstTables tables[2][NB_SUBBANDS] = {
{
[LF] = { quantize_intervals_LF,
invert_quantize_dither_factors_LF,
quantize_dither_factors_LF,
@ -217,6 +419,33 @@ static ConstTables tables[NB_SUBBANDS] = {
quantize_factor_select_offset_HF,
FF_ARRAY_ELEMS(quantize_intervals_HF),
0x15FF, 12 },
},
{
[LF] = { hd_quantize_intervals_LF,
hd_invert_quantize_dither_factors_LF,
hd_quantize_dither_factors_LF,
hd_quantize_factor_select_offset_LF,
FF_ARRAY_ELEMS(hd_quantize_intervals_LF),
0x11FF, 24 },
[MLF] = { hd_quantize_intervals_MLF,
hd_invert_quantize_dither_factors_MLF,
hd_quantize_dither_factors_MLF,
hd_quantize_factor_select_offset_MLF,
FF_ARRAY_ELEMS(hd_quantize_intervals_MLF),
0x14FF, 12 },
[MHF] = { hd_quantize_intervals_MHF,
hd_invert_quantize_dither_factors_MHF,
hd_quantize_dither_factors_MHF,
hd_quantize_factor_select_offset_MHF,
FF_ARRAY_ELEMS(hd_quantize_intervals_MHF),
0x16FF, 6 },
[HF] = { hd_quantize_intervals_HF,
hd_invert_quantize_dither_factors_HF,
hd_quantize_dither_factors_HF,
hd_quantize_factor_select_offset_HF,
FF_ARRAY_ELEMS(hd_quantize_intervals_HF),
0x15FF, 12 },
}
};
static const int16_t quantization_factors[32] = {
@ -494,7 +723,7 @@ static void aptx_quantize_difference(Quantize *quantize,
quantize->quantized_sample_parity_change = parity_change ^ inv;
}
static void aptx_encode_channel(Channel *channel, int32_t samples[4])
static void aptx_encode_channel(Channel *channel, int32_t samples[4], int hd)
{
int32_t subband_samples[4];
int subband;
@ -505,7 +734,7 @@ static void aptx_encode_channel(Channel *channel, int32_t samples[4])
aptx_quantize_difference(&channel->quantize[subband], diff,
channel->dither[subband],
channel->invert_quantize[subband].quantization_factor,
&tables[subband]);
&tables[hd][subband]);
}
}
@ -616,7 +845,7 @@ static void aptx_process_subband(InvertQuantize *invert_quantize,
tables->prediction_order);
}
static void aptx_invert_quantize_and_prediction(Channel *channel)
static void aptx_invert_quantize_and_prediction(Channel *channel, int hd)
{
int subband;
for (subband = 0; subband < NB_SUBBANDS; subband++)
@ -624,7 +853,7 @@ static void aptx_invert_quantize_and_prediction(Channel *channel)
&channel->prediction[subband],
channel->quantize[subband].quantized_sample,
channel->dither[subband],
&tables[subband]);
&tables[hd][subband]);
}
static int32_t aptx_quantized_parity(Channel *channel)
@ -678,6 +907,15 @@ static uint16_t aptx_pack_codeword(Channel *channel)
| (((channel->quantize[0].quantized_sample & 0x7F) ) << 0);
}
static uint32_t aptxhd_pack_codeword(Channel *channel)
{
int32_t parity = aptx_quantized_parity(channel);
return (((channel->quantize[3].quantized_sample & 0x01E) | parity) << 19)
| (((channel->quantize[2].quantized_sample & 0x00F) ) << 15)
| (((channel->quantize[1].quantized_sample & 0x03F) ) << 9)
| (((channel->quantize[0].quantized_sample & 0x1FF) ) << 0);
}
static void aptx_unpack_codeword(Channel *channel, uint16_t codeword)
{
channel->quantize[0].quantized_sample = sign_extend(codeword >> 0, 7);
@ -688,35 +926,53 @@ static void aptx_unpack_codeword(Channel *channel, uint16_t codeword)
| aptx_quantized_parity(channel);
}
static void aptxhd_unpack_codeword(Channel *channel, uint32_t codeword)
{
channel->quantize[0].quantized_sample = sign_extend(codeword >> 0, 9);
channel->quantize[1].quantized_sample = sign_extend(codeword >> 9, 6);
channel->quantize[2].quantized_sample = sign_extend(codeword >> 15, 4);
channel->quantize[3].quantized_sample = sign_extend(codeword >> 19, 5);
channel->quantize[3].quantized_sample = (channel->quantize[3].quantized_sample & ~1)
| aptx_quantized_parity(channel);
}
static void aptx_encode_samples(AptXContext *ctx,
int32_t samples[NB_CHANNELS][4],
uint8_t output[2*NB_CHANNELS])
uint8_t *output)
{
int channel;
for (channel = 0; channel < NB_CHANNELS; channel++)
aptx_encode_channel(&ctx->channels[channel], samples[channel]);
aptx_encode_channel(&ctx->channels[channel], samples[channel], ctx->hd);
aptx_insert_sync(ctx->channels, &ctx->sync_idx);
for (channel = 0; channel < NB_CHANNELS; channel++) {
aptx_invert_quantize_and_prediction(&ctx->channels[channel]);
AV_WB16(output + 2*channel, aptx_pack_codeword(&ctx->channels[channel]));
aptx_invert_quantize_and_prediction(&ctx->channels[channel], ctx->hd);
if (ctx->hd)
AV_WB24(output + 3*channel,
aptxhd_pack_codeword(&ctx->channels[channel]));
else
AV_WB16(output + 2*channel,
aptx_pack_codeword(&ctx->channels[channel]));
}
}
static int aptx_decode_samples(AptXContext *ctx,
const uint8_t input[2*NB_CHANNELS],
const uint8_t *input,
int32_t samples[NB_CHANNELS][4])
{
int channel, ret;
for (channel = 0; channel < NB_CHANNELS; channel++) {
uint16_t codeword;
aptx_generate_dither(&ctx->channels[channel]);
codeword = AV_RB16(input + 2*channel);
aptx_unpack_codeword(&ctx->channels[channel], codeword);
aptx_invert_quantize_and_prediction(&ctx->channels[channel]);
if (ctx->hd)
aptxhd_unpack_codeword(&ctx->channels[channel],
AV_RB24(input + 3*channel));
else
aptx_unpack_codeword(&ctx->channels[channel],
AV_RB16(input + 2*channel));
aptx_invert_quantize_and_prediction(&ctx->channels[channel], ctx->hd);
}
ret = aptx_check_parity(ctx->channels, &ctx->sync_idx);
@ -733,11 +989,15 @@ static av_cold int aptx_init(AVCodecContext *avctx)
AptXContext *s = avctx->priv_data;
int chan, subband;
if (avctx->frame_size == 0)
avctx->frame_size = 1024;
s->hd = avctx->codec->id == AV_CODEC_ID_APTX_HD;
s->block_size = s->hd ? 6 : 4;
if (avctx->frame_size & 3) {
av_log(avctx, AV_LOG_ERROR, "Frame size must be a multiple of 4 samples\n");
if (avctx->frame_size == 0)
avctx->frame_size = 256 * s->block_size;
if (avctx->frame_size % s->block_size) {
av_log(avctx, AV_LOG_ERROR,
"Frame size must be a multiple of %d samples\n", s->block_size);
return AVERROR(EINVAL);
}
@ -759,9 +1019,9 @@ static int aptx_decode_frame(AVCodecContext *avctx, void *data,
{
AptXContext *s = avctx->priv_data;
AVFrame *frame = data;
int pos, channel, sample, ret;
int pos, opos, channel, sample, ret;
if (avpkt->size < 4) {
if (avpkt->size < s->block_size) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
return AVERROR_INVALIDDATA;
}
@ -769,11 +1029,11 @@ static int aptx_decode_frame(AVCodecContext *avctx, void *data,
/* get output buffer */
frame->channels = NB_CHANNELS;
frame->format = AV_SAMPLE_FMT_S32P;
frame->nb_samples = avpkt->size & ~3;
frame->nb_samples = 4 * avpkt->size / s->block_size;
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret;
for (pos = 0; pos < frame->nb_samples; pos += 4) {
for (pos = 0, opos = 0; opos < frame->nb_samples; pos += s->block_size, opos += 4) {
int32_t samples[NB_CHANNELS][4];
if (aptx_decode_samples(s, &avpkt->data[pos], samples)) {
@ -783,32 +1043,33 @@ static int aptx_decode_frame(AVCodecContext *avctx, void *data,
for (channel = 0; channel < NB_CHANNELS; channel++)
for (sample = 0; sample < 4; sample++)
AV_WN32A(&frame->data[channel][4*(sample+pos)],
AV_WN32A(&frame->data[channel][4*(opos+sample)],
samples[channel][sample] << 8);
}
*got_frame_ptr = 1;
return frame->nb_samples;
return s->block_size * frame->nb_samples / 4;
}
static int aptx_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
const AVFrame *frame, int *got_packet_ptr)
{
AptXContext *s = avctx->priv_data;
int pos, channel, sample, ret;
int pos, ipos, channel, sample, output_size, ret;
if ((ret = ff_af_queue_add(&s->afq, frame)) < 0)
return ret;
if ((ret = ff_alloc_packet2(avctx, avpkt, frame->nb_samples, 0)) < 0)
output_size = s->block_size * frame->nb_samples/4;
if ((ret = ff_alloc_packet2(avctx, avpkt, output_size, 0)) < 0)
return ret;
for (pos = 0; pos < frame->nb_samples; pos += 4) {
for (pos = 0, ipos = 0; pos < output_size; pos += s->block_size, ipos += 4) {
int32_t samples[NB_CHANNELS][4];
for (channel = 0; channel < NB_CHANNELS; channel++)
for (sample = 0; sample < 4; sample++)
samples[channel][sample] = (int32_t)AV_RN32A(&frame->data[channel][4*(sample+pos)]) >> 8;
samples[channel][sample] = (int32_t)AV_RN32A(&frame->data[channel][4*(ipos+sample)]) >> 8;
aptx_encode_samples(s, samples, avpkt->data + pos);
}
@ -844,6 +1105,24 @@ AVCodec ff_aptx_decoder = {
};
#endif
#if CONFIG_APTX_HD_DECODER
AVCodec ff_aptx_hd_decoder = {
.name = "aptx_hd",
.long_name = NULL_IF_CONFIG_SMALL("aptX HD (Audio Processing Technology for Bluetooth)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_APTX_HD,
.priv_data_size = sizeof(AptXContext),
.init = aptx_init,
.decode = aptx_decode_frame,
.close = aptx_close,
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
.channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_STEREO, 0},
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S32P,
AV_SAMPLE_FMT_NONE },
};
#endif
#if CONFIG_APTX_ENCODER
AVCodec ff_aptx_encoder = {
.name = "aptx",
@ -862,3 +1141,22 @@ AVCodec ff_aptx_encoder = {
.supported_samplerates = (const int[]) {8000, 16000, 24000, 32000, 44100, 48000, 0},
};
#endif
#if CONFIG_APTX_HD_ENCODER
AVCodec ff_aptx_hd_encoder = {
.name = "aptx_hd",
.long_name = NULL_IF_CONFIG_SMALL("aptX HD (Audio Processing Technology for Bluetooth)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_APTX_HD,
.priv_data_size = sizeof(AptXContext),
.init = aptx_init,
.encode2 = aptx_encode_frame,
.close = aptx_close,
.capabilities = AV_CODEC_CAP_SMALL_LAST_FRAME,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
.channel_layouts = (const uint64_t[]) { AV_CH_LAYOUT_STEREO, 0},
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S32P,
AV_SAMPLE_FMT_NONE },
.supported_samplerates = (const int[]) {8000, 16000, 24000, 32000, 44100, 48000, 0},
};
#endif

1
libavcodec/avcodec.h
View File

@ -634,6 +634,7 @@ enum AVCodecID {
AV_CODEC_ID_ATRAC3PAL,
AV_CODEC_ID_DOLBY_E,
AV_CODEC_ID_APTX,
AV_CODEC_ID_APTX_HD,
/* subtitle codecs */
AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs.

7
libavcodec/codec_desc.c
View File

@ -2858,6 +2858,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("aptX (Audio Processing Technology for Bluetooth)"),
.props = AV_CODEC_PROP_LOSSY,
},
{
.id = AV_CODEC_ID_APTX_HD,
.type = AVMEDIA_TYPE_AUDIO,
.name = "aptx_hd",
.long_name = NULL_IF_CONFIG_SMALL("aptX HD (Audio Processing Technology for Bluetooth)"),
.props = AV_CODEC_PROP_LOSSY,
},
/* subtitle codecs */
{