213 lines
6.8 KiB
C
213 lines
6.8 KiB
C
/* play/ipc_media.c — 媒体会话 IPC 最小客户端（SDK 尚无媒体封装，App 内用 meow_ipc.h 帧格式直连）。
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*
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* 连接：AF_UNIX SOCK_STREAM 到 MEOW_IPC_SOCK（缺省 /usr/data/meow_ipc.sock）。HELLO(app_id,
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* MF_PLAYBACK) 注册为媒体源；之后**同一连接**周期发 MSG_META（~1s，进度随播放推进）并阻塞等
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* launcher 下发 MSG_PLAYCTL（播放/暂停/上下曲/seek）。launcher 经该连接 fd 回发（meow_media.c
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* send_playctl 用最近活跃会话的 fd）。无 socket/launcher 不跑 → 优雅跳过（打日志不崩）。
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* 线程模型：独立线程（main 起了 meow_ui_run 阻塞；播放线程归 player_manager，本线程只做 IPC 收发）。
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*/
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#include "../ncm_app_internal.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <poll.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include "meow_ipc.h"
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static pthread_t g_thr;
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static int g_thr_on;
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static int g_quit;
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static const char *sock_path(void)
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{
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const char *e = getenv("MEOW_IPC_SOCK");
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return (e && e[0]) ? e : MEOW_IPC_PATH;
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}
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static int connect_path(const char *path)
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{
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int fd = socket(AF_UNIX, SOCK_STREAM, 0);
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if (fd < 0) return -1;
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struct sockaddr_un a;
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memset(&a, 0, sizeof a);
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a.sun_family = AF_UNIX;
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strncpy(a.sun_path, path, sizeof a.sun_path - 1);
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if (connect(fd, (struct sockaddr *)&a, sizeof a) < 0) { close(fd); return -1; }
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return fd;
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}
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/* 发送一帧（头+负载）。 */
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static int send_frame(int fd, uint16_t type, uint32_t req_id, const void *payload, uint32_t len)
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{
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uint8_t hdr[MEOW_IPC_HDR_LEN];
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uint32_t magic = MEOW_IPC_MAGIC;
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uint16_t ver = MEOW_IPC_VERSION;
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memcpy(hdr + 0, &magic, 4);
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memcpy(hdr + 4, &ver, 2);
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memcpy(hdr + 6, &type, 2);
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memcpy(hdr + 8, &req_id, 4);
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memcpy(hdr + 12, &len, 4);
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size_t off = 0;
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while (off < sizeof hdr) {
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ssize_t w = write(fd, hdr + off, sizeof hdr - off);
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if (w <= 0) return -1;
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off += (size_t)w;
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}
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if (len && payload) {
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off = 0;
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while (off < len) {
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ssize_t w = write(fd, (const uint8_t *)payload + off, len - off);
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if (w <= 0) return -1;
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off += (size_t)w;
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}
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}
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return 0;
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}
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static int read_frame(int fd, uint16_t *type, uint8_t *rbuf, uint32_t rcap)
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{
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uint8_t hdr[MEOW_IPC_HDR_LEN];
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size_t off = 0;
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while (off < sizeof hdr) {
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ssize_t r = read(fd, hdr + off, sizeof hdr - off);
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if (r <= 0) return -1;
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off += (size_t)r;
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}
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uint32_t magic, len; uint16_t ver;
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memcpy(&magic, hdr, 4); memcpy(&ver, hdr + 4, 2); memcpy(type, hdr + 6, 2);
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memcpy(&len, hdr + 12, 4);
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if (magic != MEOW_IPC_MAGIC || ver != MEOW_IPC_VERSION) return -1;
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if (len > rcap) len = rcap;
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off = 0;
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while (off < len) {
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ssize_t r = read(fd, rbuf + off, len - off);
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if (r <= 0) return -1;
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off += (size_t)r;
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}
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return (int)len;
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}
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/* 组并发送一条 META。 */
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static void send_meta(int fd, uint32_t req_id)
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{
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m_meta_t mm;
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memset(&mm, 0, sizeof mm);
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ncm_strlcpy(mm.app_id, "dev.player.ncm", sizeof mm.app_id);
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int idx = player_manager_playing_song();
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pthread_mutex_lock(&g_play.mu);
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int pos = (int)g_play.pos_ms;
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int dur = (int)g_play.dur_ms;
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int state = g_play.state;
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int err = g_play.err;
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pthread_mutex_unlock(&g_play.mu);
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static char title[128], artist[128], album[128];
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title[0] = artist[0] = album[0] = 0;
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if (idx >= 0 && idx < g_st.song_count) {
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snprintf(title, sizeof title, "%s", g_st.songs[idx].name);
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snprintf(artist, sizeof artist, "%s", g_st.songs[idx].art_name);
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snprintf(album, sizeof album, "%s", g_st.songs[idx].album_name);
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}
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snprintf(mm.title, sizeof mm.title, "%s", title);
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snprintf(mm.artist, sizeof mm.artist, "%s", artist);
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snprintf(mm.album, sizeof mm.album, "%s", album);
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mm.pos_ms = (uint32_t)(pos < 0 ? 0 : pos);
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mm.dur_ms = (uint32_t)(dur < 0 ? 0 : dur);
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uint32_t st = 0;
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if (err != 0) st = 0;
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else if (state == NCM_PC_PLAYING) st = 1;
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else if (state == NCM_PC_PAUSED) st = 2;
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else if (state == NCM_PC_BUFFER) st = 3;
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else st = 0;
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mm.state = st;
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/* 封面：若已落盘（cover 缓存文件）则提供路径 */
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mm.flags = 0;
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const char *cp = cover_current_path();
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if (cp && cp[0]) {
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snprintf(mm.artwork, sizeof mm.artwork, "%s", cp);
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mm.flags |= MF_ART | MF_COVER;
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}
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if (lyric_count() > 0) mm.flags |= MF_LYRIC;
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send_frame(fd, MSG_META, req_id, &mm, sizeof mm);
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}
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static void apply_playctl(const m_playctl_t *c)
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{
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switch (c->cmd) {
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case NCM_CTL_PLAY: player_manager_pause(0); break;
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case NCM_CTL_PAUSE: player_manager_pause(1); break;
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case NCM_CTL_PREV: player_manager_next(-1); break;
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case NCM_CTL_NEXT: player_manager_next(1); break;
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case NCM_CTL_SEEK: player_manager_seek(c->seek_ms); break;
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default: break;
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}
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}
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static void *ipc_thread(void *arg)
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{
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(void)arg;
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int fd = connect_path(sock_path());
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if (fd < 0) { meow_log(MEOW_LOG_WARN, "ipc: no launcher socket"); return NULL; }
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m_hello_t h;
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memset(&h, 0, sizeof h);
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ncm_strlcpy(h.app_id, "dev.player.ncm", sizeof h.app_id);
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h.version = 1;
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h.flags = MF_PLAYBACK;
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if (send_frame(fd, MSG_HELLO, 1, &h, sizeof h) != 0) { close(fd); return NULL; }
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uint8_t hb[256];
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uint16_t htype;
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if (read_frame(fd, &htype, hb, sizeof hb) < 0) { close(fd); return NULL; }
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send_meta(fd, 2); /* 首条注册媒体源（state=0 未播也登记，start 播后自动成源） */
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uint64_t last_meta = 0;
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while (!g_quit && !g_app_quit) {
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struct pollfd p;
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p.fd = fd; p.events = POLLIN;
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int pr = poll(&p, 1, 200);
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if (pr > 0 && (p.revents & POLLIN)) {
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uint8_t rbuf[MEOW_IPC_MAX];
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uint16_t type;
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int n = read_frame(fd, &type, rbuf, sizeof rbuf);
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if (n < 0) break;
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if (type == MSG_PLAYCTL && n >= (int)sizeof(m_playctl_t)) {
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m_playctl_t c;
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memcpy(&c, rbuf, sizeof c);
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apply_playctl(&c);
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}
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} else if (pr < 0 && errno != EINTR) {
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break;
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}
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uint64_t now = meow_ui_time_ms();
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if (now - last_meta >= 1000) {
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send_meta(fd, (uint32_t)(now & 0x7FFFFFFF));
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last_meta = now;
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}
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}
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close(fd);
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return NULL;
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}
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int ipc_media_start(void)
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{
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if (g_thr_on) return 0;
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g_quit = 0;
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if (pthread_create(&g_thr, NULL, ipc_thread, NULL) != 0) return -1;
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pthread_detach(g_thr);
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g_thr_on = 1;
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return 0;
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}
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void ipc_media_stop(void)
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{
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g_quit = 1;
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/* 线程在 200ms poll 内退出（detach，不 join）*/
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g_thr_on = 0;
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}
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