/* test/test_decode.c — 播放解码链路验证（宿主/mipsel+qemu）：decoder（magic 分发
 * dr_flac/minimp3，§19）→ audio_out(FILE sink) 写 WAV。不依赖网络/登录（输入本地文件）。
 * 验证：格式探测正确、rate/ch/bits 按实际流、解码无错、WAV 非空、帧数/时长对、RT 因子。
 *
 * 运行：NCM_AUDIO_SINK=file NCM_AUDIO_OUT=/tmp/ncm_decode.wav \
 *         ./test_decode <path> [expect_frames] [expect_rate] [expect_bits]
 *   expect_* 给定时校验（不一致 exit 1）；不给则只要求 frames>0。
 *
 * 编译（宿主，ncm_app 目录下）：
 *   gcc -O2 -Wall -Wextra -DJSMN_HEADER -I. -Icore -I../sdk -I../meow_launcherd \
 *       -Ivendor/minimp3 -Ivendor/dr_flac \
 *       app/test/test_decode.c app/play/decoder.c app/play/audio_out.c \
 *       ../sdk/meow_ui_audio.c ../sdk/meow_ui_log.c -o /tmp/td.o-chain # 见下两行豁免 TU
 *   gcc -O2 -Ivendor/minimp3 -c app/play/minimp3_impl.c -o /tmp/td_mm.o   # vendor 豁免
 *   gcc -O2 -Ivendor/dr_flac -c app/play/dr_flac_impl.c -o /tmp/td_df.o   # vendor 豁免
 *   （首行改为 -c 逐个或把两个豁免 .o 一并链接：gcc ... -o out/test_decode /tmp/td_mm.o /tmp/td_df.o -lpthread -lm）
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "../ncm_app_internal.h"   /* audio_out 声明 + 全局态 */
#include "../play/decoder.h"

ncm_app_state_t g_st;
ncm_play_run_t  g_play = { .mu = PTHREAD_MUTEX_INITIALIZER };
volatile int g_app_quit = 0;
volatile int g_net_ready = 0;
int          g_host_mock = 1;

/* SDK meow_ui_log.c 需要（本测试不链 meow_ui_sys.c，同 audiod_chain_sim 口径打桩） */
uint64_t meow_ui_time_ms(void)
{
    struct timespec ts;
    clock_gettime(CLOCK_MONOTONIC, &ts);
    return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static double now_s(void)
{
    struct timespec ts;
    clock_gettime(CLOCK_MONOTONIC, &ts);
    return (double)ts.tv_sec + ts.tv_nsec / 1e9;
}

int main(int argc, char **argv)
{
    const char *path = (argc > 1) ? argv[1] : "vendor/minimp3/vectors/performance/MIPSTest.mp3";
    int64_t exp_frames = (argc > 2) ? atoll(argv[2]) : -1;
    int     exp_rate   = (argc > 3) ? atoi(argv[3])  : -1;
    int     exp_bits   = (argc > 4) ? atoi(argv[4])  : -1;

    ncm_decoder_t *dec = NULL;
    int rate = 0, ch = 0, bits = 0;
    int64_t total_frames = 0;
    if (ncm_dec_open(&dec, path, &rate, &ch, &bits, &total_frames) != 0) {
        fprintf(stderr, "open failed\n"); return 1;
    }
    printf("%s: %s  %dHz x%d %dbit  total_frames=%lld\n",
           path, ncm_dec_format(dec), rate, ch, bits, (long long)total_frames);
    if (exp_rate > 0 && rate != exp_rate) { fprintf(stderr, "rate mismatch %d != %d\n", rate, exp_rate); return 1; }
    if (exp_bits > 0 && bits != exp_bits) { fprintf(stderr, "bits mismatch %d != %d\n", bits, exp_bits); return 1; }

    if (audio_out_open(rate, ch, bits) != 0) { fprintf(stderr, "audio_out open failed\n"); return 1; }

    static int32_t pcm[4096 * 2];
    long long frames = 0;
    double t0 = now_s();
    for (;;) {
        if (g_app_quit) break;
        int64_t got = ncm_dec_read(dec, pcm, 4096);
        if (got == 0) break;
        if (audio_out_write(pcm, (int)got) != (int)got) { fprintf(stderr, "write failed\n"); break; }
        frames += got;
    }
    double dt = now_s() - t0;
    audio_out_close();
    ncm_dec_close(dec);

    double secs = rate > 0 ? (double)frames / (double)rate : 0;
    double rt  = (dt > 0) ? secs / dt : 0;
    printf("decoded %lld frames = %.3f s audio (%d Hz) in %.3f s => %.1fx RT\n",
           frames, secs, rate, dt, rt);
    if (exp_frames >= 0 && frames != exp_frames) {
        fprintf(stderr, "frames mismatch %lld != %lld\n", frames, (long long)exp_frames);
        return 1;
    }
    printf("OK: %s\n", (frames > 0) ? "decode chain works" : "EMPTY");
    return (frames > 0) ? 0 : 1;
}