AskaEth
6e7c0d00c0
真机（2026-11-11 18:2x/18:3x，MOONDROP Pudding 33:DE:2E:21:AD:30）暴露两个时序/解析问题：
① **list-pcms 易失，不能当 MAC 主来源**：bluealsa 的 a2dpsrc PCM 对象只在 A2DP profile
配置好后的秒级窗口内存在（无人开 PCM 时 1~3s 就消失）。r1 用它取 MAC → 探针一错过窗口
就 btdev=- / bt=fail 回落。改为 **主来源 `hcitool con` 的 ACL 行**（内核 ACL 是连接权威，
开销一个 popen），拿到 MAC 直接 snd_pcm_open("bluealsa:DEV=<mac>,...") 让 bluealsa
在 open 时自己创建 PCM；list-pcms 降级为兜底来源。
② **ACL 刚建立时 profile 可能还没配置好** → open 会瞬时 ENODEV。改 3 次 × 300ms 短重试
（上限 600ms，不占播放线程太久）；失败后才记为 fail#n 进退避（仍只在开流/重配边界）。
③ **端点路径要 D-Bus 全串**（`bluealsa-cli volume|info` 要它，不是 MAC）：新增
bt_dev_endpoint_path()；PCM 撑住后再 list-pcms 取路径（此时稳定）→ bt_refresh_endpoint()。
④ **命令换行 bug**：旧 vol_full 的 token 扫描不认 '\n'，真机把端点路径连换行一起塞进
`bluealsa-cli volume <path>\n 127`，第二行成了独立命令 → 音量设置实际没下发。改为
bt_dev_endpoint_path() 严格按空白/\r/\n 截断。
⑤ **行内匹配 bug**：is_src_line() 对整串 strstr 会借到下一行的 a2dpsrc —— hfphf/source
行被误判成 A2DP 源端点（count_src 少算/endpoint_path 取错行）。改 line_is_src() 只在
本行内判定。
⑥ STATE 增 `btacodec=`：读回 `bluealsa-cli info` 的 Selected codec。真机 MOONDROP Pudding
只有 SBC/AAC，settings 请求 LDAC 时 bluealsa 接受参数但实际选 AAC —— 面板必须看到
实际值（btcodec= 仍是请求值，btacodec= 是实际值）。
⑦ AVRCP 满量程 127（bluealsa-cli volume 取值范围 [0,127]，旧值 100 只到 79%）。
宿主：test_bt_dev 66/66（新增 hcitool con 真机原文 / 端点路径 / info 原文解析用例），
test_audiod_host 109/0，交叉编译 0 warning（67944B，md5 0ec3b9a6…）。
真机：r1 二进制 18:26 那次已实测 BT 出声（bt=ok / played=55296 / bluealsa Running:true /
Delay 17.2ms / Volume 127），18:33 起耳机自动关机，r2 的 hcitool-con 主路径未能在真机复验
（耳机不可达），详见报告。
280 lines
13 KiB
C
280 lines
13 KiB
C
/* test_bt_dev.c — 蓝牙端点选择 / PCM 名构造 / 回落退避 宿主验证（纯逻辑，bt_dev.c）。
|
||
*
|
||
* 输入全部取自**真机实测原文**（bluealsa v4.1.1；设备 /usr/bin/bluealsa 的
|
||
* `dev_%.2X_..` + src/ba-transport.c 的 `<dev>/<profile>/<source|sink>`）：
|
||
* /org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/sink ← 实机（本机 a2dp-source）
|
||
* （同一格式下 /a2dpsrc/source 只是 PCM 模式不同，解析只认 dev_XX_.. 段）
|
||
*
|
||
* 覆盖矩阵：
|
||
* D1 bt_dev_detect_mac：真实 D-Bus 路径 → MAC；多端点/多设备取第一个 a2dpsrc；
|
||
* hfphf/a2dpsnk 不算；简化 `a2dpsrc/<MAC>` 兼容；空/无源端点/NULL/坏 dev_ 段 → -1。
|
||
* D2 bt_dev_count_src：0/1/2 个源端点。
|
||
* D3 bt_dev_codec_token：settings bt.codec → bluealsa canonical（4.1.1 别名表 strcasecmp）；
|
||
* auto/空/unchanged/垃圾 → unchanged。
|
||
* D4 bt_dev_pcm_name：内联 DEV/PROFILE/CODEC；坏 MAC/小缓冲 → -1。
|
||
* D5 bt_dev_backoff_ms / should_try：2s→60s 封顶 + 门控（防重试风暴）。
|
||
* D6 bt_dev_endpoint_path：取整条 D-Bus 路径给 bluealsa-cli volume|info（真机行含 /sink）。
|
||
* D7 bt_dev_info_codec：真机 `bluealsa-cli info` 原文 → Selected codec（不能误吃 Available 行）。
|
||
* D8 bt_dev_acl_mac：真机 `hcitool con` 原文 → ACL 对端 MAC（MAC 主来源；list-pcms 只在秒级窗口存在）。
|
||
*
|
||
* 编译（在 patch_v2/meow_audiod 下）：
|
||
* cc -Wall -Wextra -o test_bt_dev test_bt_dev.c bt_dev.c
|
||
* 运行：./test_bt_dev
|
||
*/
|
||
#include "bt_dev.h"
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
|
||
static int g_pass = 0, g_fail = 0;
|
||
static void check(int cond, const char *name)
|
||
{
|
||
if (cond) { printf(" PASS %s\n", name); g_pass++; }
|
||
else { printf(" FAIL %s\n", name); g_fail++; }
|
||
}
|
||
|
||
int main(void)
|
||
{
|
||
setbuf(stdout, NULL);
|
||
|
||
/* ==== D1 设备列表 → 选中 a2dpsrc 连接设备（真实 D-Bus 路径格式） ==== */
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac(
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/source\n", mac, sizeof mac);
|
||
check(rc == 0 && strcmp(mac, "33:DE:2E:21:AD:30") == 0,
|
||
"D1a real D-Bus path -> MAC (dev_ underscores -> colons)");
|
||
}
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac(
|
||
"/org/bluealsa/hci0/dev_E0_42_6D_79_C5_98/hfphf/source\n"
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsnk/sink\n"
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/source\n", mac, sizeof mac);
|
||
check(rc == 0 && strcmp(mac, "33:DE:2E:21:AD:30") == 0,
|
||
"D1b hfphf/a2dpsnk skipped -> first a2dpsrc");
|
||
}
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac(
|
||
"/org/bluealsa/hci0/dev_AA_BB_CC_DD_EE_FF/a2dpsrc/source\n"
|
||
"/org/bluealsa/hci0/dev_11_22_33_44_55_66/a2dpsrc/source\n", mac, sizeof mac);
|
||
check(rc == 0 && strcmp(mac, "AA:BB:CC:DD:EE:FF") == 0, "D1c multi-device -> first a2dpsrc");
|
||
}
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac("a2dpsrc/E0:42:6D:79:C5:98\n", mac, sizeof mac);
|
||
check(rc == 0 && strcmp(mac, "E0:42:6D:79:C5:98") == 0, "D1d legacy a2dpsrc/<MAC> still parsed");
|
||
}
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac("", mac, sizeof mac);
|
||
check(rc == -1, "D1e empty output -> -1");
|
||
}
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac(
|
||
"/org/bluealsa/hci0/dev_11_22_33_44_55_66/a2dpsnk/sink\n", mac, sizeof mac);
|
||
check(rc == -1, "D1f only sink (no a2dpsrc) -> -1");
|
||
}
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac(NULL, mac, sizeof mac);
|
||
check(rc == -1, "D1g NULL input -> -1");
|
||
}
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac(
|
||
"/org/bluealsa/hci0/dev_ZZ_42_6D_79_C5_98/a2dpsrc/source\n", mac, sizeof mac);
|
||
check(rc == -1 && mac[0] == 0, "D1h malformed dev_ seg -> -1 (no garbage MAC)");
|
||
}
|
||
{
|
||
char mac[32] = "";
|
||
int rc = bt_dev_detect_mac(
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/source 1\n", mac, sizeof mac);
|
||
check(rc == 0 && strcmp(mac, "33:DE:2E:21:AD:30") == 0, "D1i trailing token tolerated");
|
||
}
|
||
|
||
/* ==== D2 源端点计数（有无 A2DP 端点的快速判定） ==== */
|
||
check(bt_dev_count_src("") == 0, "D2a empty -> 0");
|
||
check(bt_dev_count_src(
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsnk/sink\n") == 0,
|
||
"D2b only sink -> 0");
|
||
check(bt_dev_count_src(
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/source\n") == 1,
|
||
"D2c one a2dpsrc -> 1");
|
||
/* 行内判定回归：hfphf 行在 a2dpsrc 行之前，不能被算成源端点（整串 strstr 会误判） */
|
||
check(bt_dev_count_src(
|
||
"/org/bluealsa/hci0/dev_E0_42_6D_79_C5_98/hfphf/source\n"
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/sink\n") == 1,
|
||
"D2e hfphf line before a2dpsrc -> count 1 (per-line match, not whole-buffer)");
|
||
check(bt_dev_count_src(
|
||
"/org/bluealsa/hci0/dev_AA_BB_CC_DD_EE_FF/a2dpsrc/source\n"
|
||
"/org/bluealsa/hci0/dev_11_22_33_44_55_66/a2dpsrc/source\n") == 2,
|
||
"D2d two a2dpsrc -> 2");
|
||
|
||
/* ==== D3 settings bt.codec → bluealsa canonical token ==== */
|
||
{
|
||
struct { const char *in; const char *want; const char *name; } t[] = {
|
||
{ "LDAC", "LDAC", "D3a LDAC passthrough" },
|
||
{ "ldac", "LDAC", "D3b lowercase ldac -> canonical" },
|
||
{ "SBC", "SBC", "D3c SBC" },
|
||
{ "AAC", "AAC", "D3d AAC" },
|
||
{ "MPEG24", "AAC", "D3e MPEG24 alias -> AAC" },
|
||
{ "aptX", "aptX", "D3f aptX" },
|
||
{ "apt-X", "aptX", "D3g apt-X alias -> aptX" },
|
||
{ "aptx-hd", "aptX-HD", "D3h aptx-hd -> aptX-HD" },
|
||
{ "MPEG", "MP3", "D3i MPEG alias -> MP3" },
|
||
{ "MP3", "MP3", "D3j MP3" },
|
||
{ "FastStream", "FastStream", "D3k FastStream" },
|
||
{ "FS", "FastStream", "D3l FS alias -> FastStream" },
|
||
{ "auto", "unchanged", "D3m auto -> unchanged (do not touch negotiation)" },
|
||
{ "", "unchanged", "D3n empty -> unchanged" },
|
||
{ "unchanged", "unchanged", "D3o unchanged -> unchanged" },
|
||
{ "BOGUS", "unchanged", "D3p unknown -> unchanged (never inject junk)" },
|
||
};
|
||
for (size_t i = 0; i < sizeof t / sizeof t[0]; i++) {
|
||
char tok[16] = "";
|
||
const char *r = bt_dev_codec_token(t[i].in, tok, sizeof tok);
|
||
check(r == tok && strcmp(tok, t[i].want) == 0, t[i].name);
|
||
}
|
||
char tok[16] = "";
|
||
check(bt_dev_codec_token(NULL, tok, sizeof tok) == tok && !strcmp(tok, "unchanged"),
|
||
"D3q NULL setting -> unchanged");
|
||
}
|
||
|
||
/* ==== D4 PCM 名构造（20-bluealsa.conf @args 只认 DEV/PROFILE/CODEC 这套名字） ==== */
|
||
{
|
||
char n[96] = "";
|
||
int rc = bt_dev_pcm_name("33:DE:2E:21:AD:30", "LDAC", n, sizeof n);
|
||
check(rc == 0 && strcmp(n, "bluealsa:DEV=33:DE:2E:21:AD:30,PROFILE=a2dp,CODEC=LDAC") == 0,
|
||
"D4a name = bluealsa:DEV=<mac>,PROFILE=a2dp,CODEC=<token>");
|
||
}
|
||
{
|
||
char n[96] = "";
|
||
int rc = bt_dev_pcm_name("33:DE:2E:21:AD:30", "", n, sizeof n);
|
||
check(rc == 0 && strstr(n, "CODEC=unchanged") != NULL, "D4b empty token -> CODEC=unchanged");
|
||
}
|
||
{
|
||
char n[96] = "";
|
||
int rc = bt_dev_pcm_name("33:DE:2E:21:AD:30", NULL, n, sizeof n);
|
||
check(rc == 0 && strstr(n, "CODEC=unchanged") != NULL, "D4c NULL token -> CODEC=unchanged");
|
||
}
|
||
{
|
||
char n[96] = "";
|
||
check(bt_dev_pcm_name("33:DE:2E:21:AD", "LDAC", n, sizeof n) == -1, "D4d short MAC -> -1");
|
||
check(bt_dev_pcm_name("GG:DE:2E:21:AD:30", "LDAC", n, sizeof n) == -1, "D4e non-hex MAC -> -1");
|
||
check(bt_dev_pcm_name(NULL, "LDAC", n, sizeof n) == -1, "D4f NULL MAC -> -1");
|
||
check(bt_dev_pcm_name("33:DE:2E:21:AD:30", "LDAC", n, 16) == -1, "D4g tiny buffer -> -1");
|
||
}
|
||
|
||
/* ==== D6 端点完整路径（volume/info 要 D-Bus 路径，不是 MAC） ==== */
|
||
{
|
||
char path[128] = "";
|
||
int rc = bt_dev_endpoint_path(
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/sink\n", path, sizeof path);
|
||
check(rc == 0 && strcmp(path, "/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/sink") == 0,
|
||
"D6a real /a2dpsrc/sink line -> full path (trailing newline trimmed)");
|
||
}
|
||
{
|
||
char path[128] = "";
|
||
int rc = bt_dev_endpoint_path(
|
||
"/org/bluealsa/hci0/dev_E0_42_6D_79_C5_98/hfphf/source\n"
|
||
"/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/sink\r\n", path, sizeof path);
|
||
check(rc == 0 && strcmp(path, "/org/bluealsa/hci0/dev_33_DE_2E_21_AD_30/a2dpsrc/sink") == 0,
|
||
"D6b skips hfphf, strips CRLF (no newline leaks into popen cmd)");
|
||
}
|
||
{
|
||
char path[128] = "";
|
||
check(bt_dev_endpoint_path("/org/bluealsa/hci0/dev_11_22_33_44_55_66/a2dpsnk/sink\n",
|
||
path, sizeof path) == -1, "D6c no a2dpsrc -> -1");
|
||
check(bt_dev_endpoint_path("", path, sizeof path) == -1, "D6d empty -> -1");
|
||
check(bt_dev_endpoint_path(NULL, path, sizeof path) == -1, "D6e NULL -> -1");
|
||
}
|
||
|
||
/* ==== D7 实际协商 codec（真机 info 原文：MOONDROP Pudding 只有 SBC/AAC，请求 LDAC 实际选 AAC） ==== */
|
||
{
|
||
const char *info =
|
||
"Device: /org/bluez/hci0/dev_33_DE_2E_21_AD_30\n"
|
||
"Sequence: 0\n"
|
||
"Transport: A2DP-source\n"
|
||
"Mode: sink\n"
|
||
"Running: true\n"
|
||
"Format: S16_LE\n"
|
||
"Channels: 2\n"
|
||
"Sampling: 48000 Hz\n"
|
||
"Available codecs: SBC AAC\n"
|
||
"Selected codec: AAC\n"
|
||
"Delay: 17.2 ms\n"
|
||
"SoftVolume: false\n"
|
||
"Volume: L: 127 R: 127\n"
|
||
"Muted: L: false R: false\n";
|
||
char codec[16] = "";
|
||
check(bt_dev_info_codec(info, codec, sizeof codec) == 0 && strcmp(codec, "AAC") == 0,
|
||
"D7a real info -> Selected codec=AAC (not the Available line)");
|
||
}
|
||
{
|
||
const char *info = "Available codecs: SBC AAC\nSelected codec: SBC\r\n";
|
||
char codec[16] = "";
|
||
check(bt_dev_info_codec(info, codec, sizeof codec) == 0 && strcmp(codec, "SBC") == 0,
|
||
"D7b CRLF trimmed");
|
||
}
|
||
{
|
||
char codec[16] = "";
|
||
check(bt_dev_info_codec("Running: false\n", codec, sizeof codec) == -1,
|
||
"D7c no Selected line -> -1");
|
||
check(bt_dev_info_codec(NULL, codec, sizeof codec) == -1, "D7d NULL -> -1");
|
||
}
|
||
|
||
/* ==== D8 hcitool con → ACL MAC（真机原文；MAC 主来源） ==== */
|
||
{
|
||
const char *con =
|
||
"Connections:\n"
|
||
"\t< ACL 33:DE:2E:21:AD:30 handle 12 state 1 lm MASTER AUTH ENCRYPT \n";
|
||
char mac[32] = "";
|
||
check(bt_dev_acl_mac(con, mac, sizeof mac) == 0 && strcmp(mac, "33:DE:2E:21:AD:30") == 0,
|
||
"D8a real hcitool con (state 1 AUTH ENCRYPT) -> ACL MAC");
|
||
}
|
||
{
|
||
const char *con =
|
||
"Connections:\n"
|
||
"\t< ACL 33:DE:2E:21:AD:30 handle 0 state 5 lm MASTER \n";
|
||
char mac[32] = "";
|
||
check(bt_dev_acl_mac(con, mac, sizeof mac) == 0 && strcmp(mac, "33:DE:2E:21:AD:30") == 0,
|
||
"D8b half-open ACL (state 5) still gives MAC (kernel is authority)");
|
||
}
|
||
{
|
||
const char *con = "Connections:\n";
|
||
char mac[32] = "";
|
||
check(bt_dev_acl_mac(con, mac, sizeof mac) == -1 && mac[0] == 0, "D8c no ACL -> -1");
|
||
check(bt_dev_acl_mac(NULL, mac, sizeof mac) == -1, "D8d NULL -> -1");
|
||
}
|
||
{
|
||
/* 小写输入归一为大写（bluealsa DEV 参数按大写比较） */
|
||
const char *con = "\t< ACL aa:bb:cc:dd:ee:ff handle 3 state 1 lm SLAVE \n";
|
||
char mac[32] = "";
|
||
check(bt_dev_acl_mac(con, mac, sizeof mac) == 0 && strcmp(mac, "AA:BB:CC:DD:EE:FF") == 0,
|
||
"D8e lowercase -> uppercase canonical");
|
||
}
|
||
|
||
/* ==== D5 回落退避（防重试风暴：M10 教训） ==== */
|
||
check(bt_dev_backoff_ms(0) == 0, "D5a fails=0 -> 0ms (immediate)");
|
||
check(bt_dev_backoff_ms(1) == 2000, "D5b fails=1 -> 2s");
|
||
check(bt_dev_backoff_ms(2) == 4000, "D5c fails=2 -> 4s");
|
||
check(bt_dev_backoff_ms(3) == 8000, "D5d fails=3 -> 8s");
|
||
check(bt_dev_backoff_ms(4) == 16000, "D5e fails=4 -> 16s");
|
||
check(bt_dev_backoff_ms(5) == 32000, "D5f fails=5 -> 32s");
|
||
check(bt_dev_backoff_ms(6) == 60000, "D5g fails=6 -> 60s (capped)");
|
||
check(bt_dev_backoff_ms(99) == 60000, "D5h fails=99 -> 60s (capped)");
|
||
check(bt_dev_should_try(0, 0) == 1, "D5i never failed -> try now");
|
||
check(bt_dev_should_try(1, 1999) == 0, "D5j fail#1 @1999ms -> gated");
|
||
check(bt_dev_should_try(1, 2000) == 1, "D5k fail#1 @2000ms -> allowed");
|
||
check(bt_dev_should_try(3, 7999) == 0, "D5l fail#3 @7999ms -> gated");
|
||
check(bt_dev_should_try(3, 8000) == 1, "D5m fail#3 @8000ms -> allowed");
|
||
check(bt_dev_should_try(2, -1) == 1, "D5n clock anomaly (negative) -> allowed (no deadlock)");
|
||
|
||
printf(g_fail ? "\nRESULT: %d FAIL(S)\n" : "\nRESULT: ALL PASS (%d checks)\n",
|
||
g_fail ? g_fail : g_pass);
|
||
return g_fail ? 1 : 0;
|
||
}
|