1 // SPDX-License-Identifier: LGPL-2.1-or-later
4 * BlueZ - Bluetooth protocol stack for Linux
6 * Copyright (C) 2015 Andrzej Kaczmarek <andrzej.kaczmarek@codecoup.pl>
7 * Copyright (C) 2018 Pali Rohár <pali.rohar@gmail.com>
20 #include "lib/bluetooth.h"
22 #include "src/shared/util.h"
32 #define A2DP_CODEC_SBC 0x00
33 #define A2DP_CODEC_MPEG12 0x01
34 #define A2DP_CODEC_MPEG24 0x02
35 #define A2DP_CODEC_ATRAC 0x04
36 #define A2DP_CODEC_VENDOR 0xff
38 /* Vendor Specific A2DP Codecs */
39 #define APTX_VENDOR_ID 0x0000004f
40 #define APTX_CODEC_ID 0x0001
41 #define FASTSTREAM_VENDOR_ID 0x0000000a
42 #define FASTSTREAM_CODEC_ID 0x0001
43 #define APTX_LL_VENDOR_ID 0x0000000a
44 #define APTX_LL_CODEC_ID 0x0002
45 #define APTX_HD_VENDOR_ID 0x000000D7
46 #define APTX_HD_CODEC_ID 0x0024
47 #define LDAC_VENDOR_ID 0x0000012d
48 #define LDAC_CODEC_ID 0x00aa
55 static const struct bit_desc sbc_frequency_table[] = {
63 static const struct bit_desc sbc_channel_mode_table[] = {
65 { 2, "Dual Channel" },
67 { 0, "Joint Stereo" },
71 static const struct bit_desc sbc_blocklen_table[] = {
79 static const struct bit_desc sbc_subbands_table[] = {
85 static const struct bit_desc sbc_allocation_table[] = {
91 static const struct bit_desc mpeg12_layer_table[] = {
92 { 7, "Layer I (mp1)" },
93 { 6, "Layer II (mp2)" },
94 { 5, "Layer III (mp3)" },
98 static const struct bit_desc mpeg12_channel_mode_table[] = {
100 { 2, "Dual Channel" },
102 { 0, "Joint Stereo" },
106 static const struct bit_desc mpeg12_frequency_table[] = {
116 static const struct bit_desc mpeg12_bitrate_table[] = {
135 static const struct bit_desc aac_object_type_table[] = {
136 { 7, "MPEG-2 AAC LC" },
137 { 6, "MPEG-4 AAC LC" },
138 { 5, "MPEG-4 AAC LTP" },
139 { 4, "MPEG-4 AAC scalable" },
147 static const struct bit_desc aac_frequency_table[] = {
163 static const struct bit_desc aac_channels_table[] = {
169 static const struct bit_desc aptx_frequency_table[] = {
177 static const struct bit_desc aptx_channel_mode_table[] = {
183 static const struct bit_desc faststream_direction_table[] = {
189 static const struct bit_desc faststream_sink_frequency_table[] = {
190 /* in config buffer, there may be more frequency bits
191 * and 48kHz takes precedence over 41kHz
198 static const struct bit_desc faststream_source_frequency_table[] = {
203 static void print_value_bits(uint8_t indent, uint32_t value,
204 const struct bit_desc *table)
208 for (i = 0; table[i].str; i++) {
209 if (value & (1 << table[i].bit_num))
210 print_field("%*c%s", indent + 2, ' ', table[i].str);
214 static const char *find_value_bit(uint32_t value,
215 const struct bit_desc *table)
219 for (i = 0; table[i].str; i++) {
220 if (value & (1 << table[i].bit_num))
231 bool (*codec_vendor_cap)(uint8_t losc, struct l2cap_frame *frame);
232 bool (*codec_vendor_cfg)(uint8_t losc, struct l2cap_frame *frame);
235 static bool codec_vendor_aptx_cap(uint8_t losc, struct l2cap_frame *frame);
236 static bool codec_vendor_aptx_cfg(uint8_t losc, struct l2cap_frame *frame);
237 static bool codec_vendor_faststream_cap(uint8_t losc,
238 struct l2cap_frame *frame);
239 static bool codec_vendor_faststream_cfg(uint8_t losc,
240 struct l2cap_frame *frame);
241 static bool codec_vendor_aptx_ll_cap(uint8_t losc, struct l2cap_frame *frame);
242 static bool codec_vendor_aptx_ll_cfg(uint8_t losc, struct l2cap_frame *frame);
243 static bool codec_vendor_aptx_hd_cap(uint8_t losc, struct l2cap_frame *frame);
244 static bool codec_vendor_aptx_hd_cfg(uint8_t losc, struct l2cap_frame *frame);
245 static bool codec_vendor_ldac(uint8_t losc, struct l2cap_frame *frame);
247 static const struct vndcodec vndcodecs[] = {
248 { APTX_VENDOR_ID, APTX_CODEC_ID, "aptX",
249 codec_vendor_aptx_cap, codec_vendor_aptx_cfg },
250 { FASTSTREAM_VENDOR_ID, FASTSTREAM_CODEC_ID, "FastStream",
251 codec_vendor_faststream_cap, codec_vendor_faststream_cfg },
252 { APTX_LL_VENDOR_ID, APTX_LL_CODEC_ID, "aptX Low Latency",
253 codec_vendor_aptx_ll_cap, codec_vendor_aptx_ll_cfg },
254 { APTX_HD_VENDOR_ID, APTX_HD_CODEC_ID, "aptX HD",
255 codec_vendor_aptx_hd_cap, codec_vendor_aptx_hd_cfg },
256 { LDAC_VENDOR_ID, LDAC_CODEC_ID, "LDAC",
257 codec_vendor_ldac, codec_vendor_ldac },
261 static const char *vndcodec2str(uint32_t vendor_id, uint16_t codec_id)
265 for (i = 0; i < sizeof(vndcodecs)/sizeof(*vndcodecs); i++) {
266 if (vndcodecs[i].vendor_id == vendor_id &&
267 vndcodecs[i].codec_id == codec_id)
268 return vndcodecs[i].codec_name;
274 static bool codec_sbc_cap(uint8_t losc, struct l2cap_frame *frame)
281 l2cap_frame_get_u8(frame, &cap);
283 print_field("%*cFrequency: 0x%02x", BASE_INDENT, ' ', cap & 0xf0);
284 print_value_bits(BASE_INDENT, cap & 0xf0, sbc_frequency_table);
286 print_field("%*cChannel Mode: 0x%02x", BASE_INDENT, ' ', cap & 0x0f);
287 print_value_bits(BASE_INDENT, cap & 0x0f, sbc_channel_mode_table);
289 l2cap_frame_get_u8(frame, &cap);
291 print_field("%*cBlock Length: 0x%02x", BASE_INDENT, ' ', cap & 0xf0);
292 print_value_bits(BASE_INDENT, cap & 0xf0, sbc_blocklen_table);
294 print_field("%*cSubbands: 0x%02x", BASE_INDENT, ' ', cap & 0x0c);
295 print_value_bits(BASE_INDENT, cap & 0x0c, sbc_subbands_table);
297 print_field("%*cAllocation Method: 0x%02x", BASE_INDENT, ' ',
299 print_value_bits(BASE_INDENT, cap & 0x03, sbc_allocation_table);
301 l2cap_frame_get_u8(frame, &cap);
303 print_field("%*cMinimum Bitpool: %d", BASE_INDENT, ' ', cap);
305 l2cap_frame_get_u8(frame, &cap);
307 print_field("%*cMaximum Bitpool: %d", BASE_INDENT, ' ', cap);
312 static bool codec_sbc_cfg(uint8_t losc, struct l2cap_frame *frame)
319 l2cap_frame_get_u8(frame, &cap);
321 print_field("%*cFrequency: %s (0x%02x)", BASE_INDENT, ' ',
322 find_value_bit(cap & 0xf0, sbc_frequency_table),
325 print_field("%*cChannel Mode: %s (0x%02x)", BASE_INDENT, ' ',
326 find_value_bit(cap & 0x0f, sbc_channel_mode_table),
329 l2cap_frame_get_u8(frame, &cap);
331 print_field("%*cBlock Length: %s (0x%02x)", BASE_INDENT, ' ',
332 find_value_bit(cap & 0xf0, sbc_blocklen_table),
335 print_field("%*cSubbands: %s (0x%02x)", BASE_INDENT, ' ',
336 find_value_bit(cap & 0x0c, sbc_subbands_table),
339 print_field("%*cAllocation Method: %s (0x%02x)", BASE_INDENT, ' ',
340 find_value_bit(cap & 0x03, sbc_allocation_table),
343 l2cap_frame_get_u8(frame, &cap);
345 print_field("%*cMinimum Bitpool: %d", BASE_INDENT, ' ', cap);
347 l2cap_frame_get_u8(frame, &cap);
349 print_field("%*cMaximum Bitpool: %d", BASE_INDENT, ' ', cap);
354 static bool codec_mpeg12_cap(uint8_t losc, struct l2cap_frame *frame)
366 if (!l2cap_frame_get_be16(frame, &cap))
369 layer = (cap >> 8) & 0xe0;
371 chan = (cap >> 8) & 0x0f;
375 if (!l2cap_frame_get_be16(frame, &cap))
379 bitrate = cap & 0x7fff;
381 print_field("%*cLayer: 0x%02x", BASE_INDENT, ' ', layer);
382 print_value_bits(BASE_INDENT, layer, mpeg12_layer_table);
384 print_field("%*cCRC: %s", BASE_INDENT, ' ', crc ? "Yes" : "No");
386 print_field("%*cChannel Mode: 0x%02x", BASE_INDENT, ' ', chan);
387 print_value_bits(BASE_INDENT, chan, mpeg12_channel_mode_table);
389 print_field("%*cMedia Payload Format: %s", BASE_INDENT, ' ',
390 mpf ? "RFC-2250 RFC-3119" : "RFC-2250");
392 print_field("%*cFrequency: 0x%02x", BASE_INDENT, ' ', freq);
393 print_value_bits(BASE_INDENT, freq, mpeg12_frequency_table);
396 print_field("%*cBitrate Index: 0x%04x", BASE_INDENT, ' ',
398 print_value_bits(BASE_INDENT, freq, mpeg12_bitrate_table);
401 print_field("%*cVBR: %s", BASE_INDENT, ' ', vbr ? "Yes" : "No");
406 static bool codec_mpeg12_cfg(uint8_t losc, struct l2cap_frame *frame)
418 if (!l2cap_frame_get_be16(frame, &cap))
421 layer = (cap >> 8) & 0xe0;
423 chan = (cap >> 8) & 0x0f;
427 if (!l2cap_frame_get_be16(frame, &cap))
431 bitrate = cap & 0x7fff;
433 print_field("%*cLayer: %s (0x%02x)", BASE_INDENT, ' ',
434 find_value_bit(layer, mpeg12_layer_table),
437 print_field("%*cCRC: %s", BASE_INDENT, ' ', crc ? "Yes" : "No");
439 print_field("%*cChannel Mode: %s (0x%02x)", BASE_INDENT, ' ',
440 find_value_bit(chan, mpeg12_channel_mode_table),
443 print_field("%*cMedia Payload Format: %s", BASE_INDENT, ' ',
444 mpf ? "RFC-2250 RFC-3119" : "RFC-2250");
446 print_field("%*cFrequency: %s (0x%02x)", BASE_INDENT, ' ',
447 find_value_bit(freq, mpeg12_frequency_table),
451 print_field("%*cBitrate Index: %s (0x%04x)", BASE_INDENT, ' ',
452 find_value_bit(freq, mpeg12_bitrate_table),
455 print_field("%*cVBR: %s", BASE_INDENT, ' ', vbr ? "Yes" : "No");
460 static bool codec_aac_cap(uint8_t losc, struct l2cap_frame *frame)
472 if (!l2cap_frame_get_be16(frame, &cap))
478 if (!l2cap_frame_get_be16(frame, &cap))
481 freq |= (cap >> 8) & 0xf0;
482 chan = (cap >> 8) & 0x0c;
483 bitrate = (cap << 16) & 0x7f0000;
486 if (!l2cap_frame_get_be16(frame, &cap))
491 print_field("%*cObject Type: 0x%02x", BASE_INDENT, ' ', type);
492 print_value_bits(BASE_INDENT, type, aac_object_type_table);
494 print_field("%*cFrequency: 0x%02x", BASE_INDENT, ' ', freq);
495 print_value_bits(BASE_INDENT, freq, aac_frequency_table);
497 print_field("%*cChannels: 0x%02x", BASE_INDENT, ' ', chan);
498 print_value_bits(BASE_INDENT, chan, aac_channels_table);
500 print_field("%*cBitrate: %ubps", BASE_INDENT, ' ', bitrate);
501 print_field("%*cVBR: %s", BASE_INDENT, ' ', vbr ? "Yes" : "No");
506 static bool codec_aac_cfg(uint8_t losc, struct l2cap_frame *frame)
518 if (!l2cap_frame_get_be16(frame, &cap))
524 if (!l2cap_frame_get_be16(frame, &cap))
527 freq |= (cap >> 8) & 0xf0;
528 chan = (cap >> 8) & 0x0c;
529 bitrate = (cap << 16) & 0x7f0000;
532 if (!l2cap_frame_get_be16(frame, &cap))
537 print_field("%*cObject Type: %s (0x%02x)", BASE_INDENT, ' ',
538 find_value_bit(type, aac_object_type_table), type);
540 print_field("%*cFrequency: %s (0x%02x)", BASE_INDENT, ' ',
541 find_value_bit(freq, aac_frequency_table), freq);
543 print_field("%*cChannels: %s (0x%02x)", BASE_INDENT, ' ',
544 find_value_bit(chan, aac_channels_table), chan);
546 print_field("%*cBitrate: %ubps", BASE_INDENT, ' ', bitrate);
547 print_field("%*cVBR: %s", BASE_INDENT, ' ', vbr ? "Yes" : "No");
552 static bool codec_vendor_aptx_cap(uint8_t losc, struct l2cap_frame *frame)
559 l2cap_frame_get_u8(frame, &cap);
561 print_field("%*cFrequency: 0x%02x", BASE_INDENT + 2, ' ', cap & 0xf0);
562 print_value_bits(BASE_INDENT + 2, cap & 0xf0, aptx_frequency_table);
564 print_field("%*cChannel Mode: 0x%02x", BASE_INDENT + 2, ' ',
566 print_value_bits(BASE_INDENT + 2, cap & 0x0f, aptx_channel_mode_table);
571 static bool codec_vendor_faststream_cap(uint8_t losc, struct l2cap_frame *frame)
578 l2cap_frame_get_u8(frame, &cap);
580 print_field("%*cDirection: 0x%02x", BASE_INDENT + 2, ' ', cap);
581 print_value_bits(BASE_INDENT + 2, cap, faststream_direction_table);
583 l2cap_frame_get_u8(frame, &cap);
585 print_field("%*cSink Frequency: 0x%02x", BASE_INDENT + 2, ' ',
587 print_value_bits(BASE_INDENT + 2, cap & 0x0f,
588 faststream_sink_frequency_table);
590 print_field("%*cSource Frequency: 0x%02x", BASE_INDENT + 2, ' ',
592 print_value_bits(BASE_INDENT + 2, cap & 0xf0,
593 faststream_source_frequency_table);
598 static bool codec_vendor_aptx_ll_cap(uint8_t losc, struct l2cap_frame *frame)
603 if (losc != 2 && losc != 11)
606 l2cap_frame_get_u8(frame, &cap);
608 print_field("%*cFrequency: 0x%02x", BASE_INDENT + 2, ' ', cap & 0xf0);
609 print_value_bits(BASE_INDENT + 2, cap & 0xf0, aptx_frequency_table);
611 print_field("%*cChannel Mode: 0x%02x", BASE_INDENT + 2, ' ',
613 print_value_bits(BASE_INDENT + 2, cap & 0x0f, aptx_channel_mode_table);
615 l2cap_frame_get_u8(frame, &cap);
617 print_field("%*cBidirectional link: %s", BASE_INDENT, ' ',
618 (cap & 1) ? "Yes" : "No");
620 if ((cap & 2) && losc == 11) {
622 l2cap_frame_get_u8(frame, &cap);
624 l2cap_frame_get_le16(frame, &level);
625 print_field("%*cTarget codec buffer level: %u (0x%02x)",
626 BASE_INDENT + 2, ' ', level, level);
628 l2cap_frame_get_le16(frame, &level);
629 print_field("%*cInitial codec buffer level: %u (0x%02x)",
630 BASE_INDENT + 2, ' ', level, level);
632 l2cap_frame_get_u8(frame, &cap);
633 print_field("%*cSRA max rate: %g (0x%02x)",
634 BASE_INDENT + 2, ' ', cap / 10000.0, cap);
636 l2cap_frame_get_u8(frame, &cap);
637 print_field("%*cSRA averaging time: %us (0x%02x)",
638 BASE_INDENT + 2, ' ', cap, cap);
640 l2cap_frame_get_le16(frame, &level);
641 print_field("%*cGood working codec buffer level: %u (0x%02x)",
642 BASE_INDENT + 2, ' ', level, level);
648 static bool codec_vendor_aptx_hd_cap(uint8_t losc, struct l2cap_frame *frame)
655 l2cap_frame_get_u8(frame, &cap);
657 print_field("%*cFrequency: 0x%02x", BASE_INDENT + 2, ' ', cap & 0xf0);
658 print_value_bits(BASE_INDENT + 2, cap & 0xf0, aptx_frequency_table);
660 print_field("%*cChannel Mode: 0x%02x", BASE_INDENT + 2, ' ',
662 print_value_bits(BASE_INDENT + 2, cap & 0x0f, aptx_channel_mode_table);
665 l2cap_frame_get_u8(frame, &cap);
666 l2cap_frame_get_u8(frame, &cap);
667 l2cap_frame_get_u8(frame, &cap);
668 l2cap_frame_get_u8(frame, &cap);
673 static bool codec_vendor_ldac(uint8_t losc, struct l2cap_frame *frame)
680 l2cap_frame_get_le16(frame, &cap);
682 print_field("%*cUnknown: 0x%04x", BASE_INDENT + 2, ' ', cap);
687 static bool codec_vendor_cap(uint8_t losc, struct l2cap_frame *frame)
689 uint32_t vendor_id = 0;
690 uint16_t codec_id = 0;
696 l2cap_frame_get_le32(frame, &vendor_id);
697 l2cap_frame_get_le16(frame, &codec_id);
701 print_field("%*cVendor ID: %s (0x%08x)", BASE_INDENT, ' ',
702 bt_compidtostr(vendor_id), vendor_id);
704 print_field("%*cVendor Specific Codec ID: %s (0x%04x)", BASE_INDENT,
705 ' ', vndcodec2str(vendor_id, codec_id), codec_id);
707 for (i = 0; i < sizeof(vndcodecs)/sizeof(*vndcodecs); i++) {
708 if (vndcodecs[i].vendor_id == vendor_id &&
709 vndcodecs[i].codec_id == codec_id)
710 return vndcodecs[i].codec_vendor_cap(losc, frame);
713 packet_hexdump(frame->data, losc);
714 l2cap_frame_pull(frame, frame, losc);
719 static bool codec_vendor_aptx_cfg(uint8_t losc, struct l2cap_frame *frame)
726 l2cap_frame_get_u8(frame, &cap);
728 print_field("%*cFrequency: %s (0x%02x)", BASE_INDENT + 2, ' ',
729 find_value_bit(cap & 0xf0, aptx_frequency_table),
732 print_field("%*cChannel Mode: %s (0x%02x)", BASE_INDENT + 2, ' ',
733 find_value_bit(cap & 0x0f, aptx_channel_mode_table),
739 static bool codec_vendor_faststream_cfg(uint8_t losc, struct l2cap_frame *frame)
746 l2cap_frame_get_u8(frame, &cap);
748 /* FastStream codec is bi-directional */
749 print_field("%*cDirection: 0x%02x", BASE_INDENT + 2, ' ', cap);
750 print_value_bits(BASE_INDENT + 2, cap, faststream_direction_table);
752 l2cap_frame_get_u8(frame, &cap);
754 print_field("%*cSink Frequency: %s (0x%02x)", BASE_INDENT + 2, ' ',
755 find_value_bit(cap & 0x0f,
756 faststream_sink_frequency_table),
759 print_field("%*cSource Frequency: %s (0x%02x)", BASE_INDENT + 2, ' ',
760 find_value_bit(cap & 0xf0,
761 faststream_source_frequency_table),
767 static bool codec_vendor_aptx_ll_cfg(uint8_t losc, struct l2cap_frame *frame)
772 if (losc != 2 && losc != 11)
775 l2cap_frame_get_u8(frame, &cap);
777 print_field("%*cFrequency: %s (0x%02x)", BASE_INDENT + 2, ' ',
778 find_value_bit(cap & 0xf0, aptx_frequency_table),
781 print_field("%*cChannel Mode: %s (0x%02x)", BASE_INDENT + 2, ' ',
782 find_value_bit(cap & 0x0f, aptx_channel_mode_table),
785 l2cap_frame_get_u8(frame, &cap);
787 print_field("%*cBidirectional link: %s", BASE_INDENT, ' ',
788 (cap & 1) ? "Yes" : "No");
790 if ((cap & 2) && losc == 11) {
792 l2cap_frame_get_u8(frame, &cap);
794 l2cap_frame_get_le16(frame, &level);
795 print_field("%*cTarget codec buffer level: %u (0x%02x)",
796 BASE_INDENT + 2, ' ', level, level);
798 l2cap_frame_get_le16(frame, &level);
799 print_field("%*cInitial codec buffer level: %u (0x%02x)",
800 BASE_INDENT + 2, ' ', level, level);
802 l2cap_frame_get_u8(frame, &cap);
803 print_field("%*cSRA max rate: %g (0x%02x)",
804 BASE_INDENT + 2, ' ', cap / 10000.0, cap);
806 l2cap_frame_get_u8(frame, &cap);
807 print_field("%*cSRA averaging time: %us (0x%02x)",
808 BASE_INDENT + 2, ' ', cap, cap);
810 l2cap_frame_get_le16(frame, &level);
811 print_field("%*cGood working codec buffer level: %u (0x%02x)",
812 BASE_INDENT + 2, ' ', level, level);
818 static bool codec_vendor_aptx_hd_cfg(uint8_t losc, struct l2cap_frame *frame)
825 l2cap_frame_get_u8(frame, &cap);
827 print_field("%*cFrequency: %s (0x%02x)", BASE_INDENT + 2, ' ',
828 find_value_bit(cap & 0xf0, aptx_frequency_table),
831 print_field("%*cChannel Mode: %s (0x%02x)", BASE_INDENT + 2, ' ',
832 find_value_bit(cap & 0x0f, aptx_channel_mode_table),
836 l2cap_frame_get_u8(frame, &cap);
837 l2cap_frame_get_u8(frame, &cap);
838 l2cap_frame_get_u8(frame, &cap);
839 l2cap_frame_get_u8(frame, &cap);
844 static bool codec_vendor_cfg(uint8_t losc, struct l2cap_frame *frame)
846 uint32_t vendor_id = 0;
847 uint16_t codec_id = 0;
853 l2cap_frame_get_le32(frame, &vendor_id);
854 l2cap_frame_get_le16(frame, &codec_id);
858 print_field("%*cVendor ID: %s (0x%08x)", BASE_INDENT, ' ',
859 bt_compidtostr(vendor_id), vendor_id);
861 print_field("%*cVendor Specific Codec ID: %s (0x%04x)", BASE_INDENT,
862 ' ', vndcodec2str(vendor_id, codec_id), codec_id);
864 for (i = 0; i < sizeof(vndcodecs)/sizeof(*vndcodecs); i++) {
865 if (vndcodecs[i].vendor_id == vendor_id &&
866 vndcodecs[i].codec_id == codec_id)
867 return vndcodecs[i].codec_vendor_cfg(losc, frame);
870 packet_hexdump(frame->data, losc);
871 l2cap_frame_pull(frame, frame, losc);
876 bool a2dp_codec_cap(uint8_t codec, uint8_t losc, struct l2cap_frame *frame)
880 return codec_sbc_cap(losc, frame);
881 case A2DP_CODEC_MPEG12:
882 return codec_mpeg12_cap(losc, frame);
883 case A2DP_CODEC_MPEG24:
884 return codec_aac_cap(losc, frame);
885 case A2DP_CODEC_VENDOR:
886 return codec_vendor_cap(losc, frame);
888 packet_hexdump(frame->data, losc);
889 l2cap_frame_pull(frame, frame, losc);
894 bool a2dp_codec_cfg(uint8_t codec, uint8_t losc, struct l2cap_frame *frame)
898 return codec_sbc_cfg(losc, frame);
899 case A2DP_CODEC_MPEG12:
900 return codec_mpeg12_cfg(losc, frame);
901 case A2DP_CODEC_MPEG24:
902 return codec_aac_cfg(losc, frame);
903 case A2DP_CODEC_VENDOR:
904 return codec_vendor_cfg(losc, frame);
906 packet_hexdump(frame->data, losc);
907 l2cap_frame_pull(frame, frame, losc);