HLS封裝接口__Media-C-SDK_SDK 參考_對象存儲 OSS-阿裏雲

注：

• is_live，是否是直播模式，直播模式的時候M3U8文件裏麵隻最新的幾個ts文件信息
• bucket_name，存儲HLS文件的存儲空間名稱
• ts_name_prefix，TS文件名稱的前綴
• m3u8_name，M3U8文件名稱
• video_frame_rate，視頻數據的幀率
• audio_sample_rate，音頻數據的采樣率
• hls_time，每個ts文件最大持續時間
• hls_list_size，直播模式時在M3U8文件中最多保留的ts文件個數

打開HLS stream文件

/**
 *  @brief  打開一個oss hls文件
 *  @param[in]  auth_func   授權函數，設置access_key_id/access_key_secret等
 *  @param[in]  options     配置信息
 *  @return:
 *      返回非NULL時成功，否則失敗
 */
oss_media_hls_stream_t* oss_media_hls_stream_open(auth_fn_t auth_func,
                        const oss_media_hls_stream_options_t *options);

注：

• 示例代碼參考：GitHub

關閉HLS stream文件

/**
 *  @brief  關閉HLS stream文件
 */
int oss_media_hls_stream_close(oss_media_hls_stream_t *stream);

注：

• 示例代碼參考：GitHub

寫HLS stream文件

/**
 *  @brief  寫入視頻和音頻數據
 *  @param[in]  video_buf 視頻數據
 *  @param[in]  video_len 視頻數據的長度，可以為0
 *  @param[in]  audio_buf 音頻數據
 *  @param[in]  audio_len 音頻數據的長度，可以為0
 *  @param[in]  stream    HLS stream
 *  @return:
 *      返回0時表示成功
 *      否則, 表示出現了錯誤
 */
int oss_media_hls_stream_write(uint8_t *video_buf,
                               uint64_t video_len,
                               uint8_t *audio_buf,
                               uint64_t audio_len,
                               oss_media_hls_stream_t *stream);

示例程序：

static void write_video_audio_vod() {
    int ret;
    int max_size = 10 * 1024 * 1024;
    FILE *h264_file, *aac_file;
    uint8_t *h264_buf, *aac_buf;
    int h264_len, aac_len;
    oss_media_hls_stream_options_t options;
    oss_media_hls_stream_t *stream;
    /* 設置HLS stream的參數值 */
    options.is_live = 0;
    options.bucket_name = "<your buckete name>";
    options.ts_name_prefix = "vod/video_audio/test";
    options.m3u8_name = "vod/video_audio/vod.m3u8";
    options.video_frame_rate = 30;
    options.audio_sample_rate = 24000;
    options.hls_time = 5;
    /* 打開HLS stream */
    stream = oss_media_hls_stream_open(auth_func, &options);
    if (stream == NULL) {
        printf("open hls stream failed.n");
        return;
    }
    /* 創建兩個buffer用來存儲音頻和視頻數據 */
    h264_buf = malloc(max_size);
    aac_buf = malloc(max_size);
    /* 讀取一段視頻數據和音頻數據，然後調用接口寫入OSS */
    {
        h264_file = fopen("/path/to/video/1.h264", "r");
        h264_len = fread(h264_buf, 1, max_size, h264_file);
        fclose(h264_file);
        aac_file = fopen("/path/to/audio/1.aac", "r");
        aac_len = fread(aac_buf, 1, max_size, aac_file);
        fclose(aac_file);
        ret = oss_media_hls_stream_write(h264_buf, h264_len, 
                aac_buf, aac_len, stream);
        if (ret != 0) {
            printf("write vod stream failed.n");
            return;
        }
    }
    /* 再讀取一段視頻數據和音頻數據，然後調用接口寫入OSS */
    {
        h264_file = fopen("/path/to/video/2.h264", "r");
        h264_len = fread(h264_buf, 1, max_size, h264_file);
        fclose(h264_file);
        aac_file = fopen("/path/to/audio/1.aac", "r");
        aac_len = fread(aac_buf, 1, max_size, aac_file);
        fclose(aac_file);
        ret = oss_media_hls_stream_write(h264_buf, h264_len, 
                aac_buf, aac_len, stream);
        if (ret != 0) {
            printf("write vod stream failed.n");
            return;
        }
    }   
    /* 寫完數據後，關閉HLS stream */
    ret = oss_media_hls_stream_close(stream);
    if (ret != 0) {
        printf("close vod stream failed.n");
        return;
    }
    /* 釋放資源 */
    free(h264_buf);
    free(aac_buf);
    printf("convert H.264 and aac to HLS vod succeededn");
}