video_file_creator.c

最新MTK手机软件源码

        if (g_video_enc_status.FSAL_STATUS != FSAL_OK)
        {
            VIDEO_ASSERT(0);

            g_video_enc_status.FSAL_ERROR_FILE = &mp4_files.MEDIA_META_FILE;
            return FSAL_ERROR;
        }

        g_video_enc_status.FSAL_STATUS = FSAL_Read(&mp4_files.MEDIA_META_FILE, (kal_uint8 *)&vos_length, 4);

        if (g_video_enc_status.FSAL_STATUS != FSAL_OK)
        {
            VIDEO_ASSERT(0);

            g_video_enc_status.FSAL_ERROR_FILE = &mp4_files.MEDIA_META_FILE;
            return FSAL_ERROR;
        }
        for (i = 0; i < file_creat_struct->frame_number - 1; i++)
        {
            result = mpeg4_get_frame_timestamp_from_meta_file(i + 1, vos_length, &temp);

            if (result != MEDIA_STATUS_OK)
            {
                VIDEO_ASSERT(0);
                return result;
            }

            stts_time = (temp - temp_prev);

            if ((stts_time & 0xf0000000) != 0) /*impossible happen, if happen, fix tricky bug,*/
                stts_time = pre_duration;

            *duration += stts_time;
            pre_duration = stts_time;
            temp_prev = temp;
        }
    }

    return MEDIA_STATUS_OK;
}

MEDIA_STATUS_CODE video_enc_check_meta_file_is_enough(STFSAL * video_file, STFSAL * meta_file, STFSAL * audio_file)
{
    kal_uint32 file_size;

    kal_uint32 video_file_size;
    MEDIA_STATUS_CODE result;
    kal_uint32 vos_length;
    kal_uint32 total_frames;

    if ((video_file == NULL) || (meta_file == NULL))
    {
        g_video_enc_status.VIDEO_STATUS = VIDEO_ENC_FILE_CANT_MERGE;

        VIDEO_ASSERT(0);
        return VIDEO_ERROR;
    }

    g_video_enc_status.FSAL_STATUS = FSAL_GetFileSize(video_file, &video_file_size);

    if (g_video_enc_status.FSAL_STATUS != FSAL_OK)
    {
        VIDEO_ASSERT(0);

        g_video_enc_status.FSAL_ERROR_FILE = video_file;
        return FSAL_ERROR;
    }

    g_video_enc_status.FSAL_STATUS = FSAL_GetFileSize(meta_file, &file_size);

    if (g_video_enc_status.FSAL_STATUS != FSAL_OK)
    {
        VIDEO_ASSERT(0);

        g_video_enc_status.FSAL_ERROR_FILE = meta_file;
        return FSAL_ERROR;
    }

    if ((file_size >= 0x18) && (video_file_size > 0x20))
    {
        result = video_enc_get_vos_length(meta_file, &vos_length);

        if (result != MEDIA_STATUS_OK)
        {
            VIDEO_ASSERT(0);
            return result;
        }

        file_size = file_size - ((vos_length + 0x18 + 3) / 4) * 4;
        total_frames = file_size / 8;
        if (total_frames < 1)
        {
            g_video_enc_status.VIDEO_STATUS = VIDEO_ENC_FILE_CANT_MERGE;

            VIDEO_ASSERT(0);
            return VIDEO_ERROR;
        }
    }
    else
    {
        g_video_enc_status.VIDEO_STATUS = VIDEO_ENC_FILE_CANT_MERGE;

        VIDEO_ASSERT(0);
        return VIDEO_ERROR;
    }

    return MEDIA_STATUS_OK;
}

MEDIA_STATUS_CODE video_enc_generate_META_file(MP4_FILE_CREATE_STRUCT * file_creat_struct, STFSAL * real_meta_file, MP4_FILE_INFO * video_file_info)
{
    t_rtc test_time;

    kal_uint32 i;
    kal_uint32 temp;
    kal_uint32 create_time;
    kal_uint32 duration;
    kal_uint32 mp4_file_pos;
    kal_uint32 avg_frame_lentgh;
    MEDIA_STATUS_CODE result;
    kal_uint32 length_tmp;
    kal_uint32 temp_prev;
    kal_uint32 pre_duration = 0;
    kal_uint32 stts_time;
    kal_uint32 stts_count;
    kal_uint32 stts_entry_count;
    kal_uint32 stts_entry_addr;
#if 0
/* under construction !*/
#endif

    if (file_creat_struct->frame_number < 1)
    {
        g_video_enc_status.VIDEO_STATUS = VIDEO_ENC_FILE_CANT_MERGE;

        VIDEO_ASSERT(0);
        return VIDEO_ERROR;
    }

    test_time.rtc_year = 4;
    test_time.rtc_mon = 2;
    test_time.rtc_day = 15;
    test_time.rtc_hour = 12;
    test_time.rtc_min = 5;
    test_time.rtc_sec = 5;

    if (file_creat_struct->time_scale <= file_creat_struct->frame_rate)
    {
        VIDEO_ASSERT(0);

        g_video_enc_status.VIDEO_STATUS = VIDEO_ENC_NOT_SUPPORT;
        return VIDEO_ERROR;
    }

    /*Initialize*/
    for (i = 0; i < MAX_ATOM_TYPE_NUMBER; i++)
    {
        video_file_info->FC_ATOM[i].pos = 0xffffffff;
    }

    mp4_file_pos = 0;
    /** mdat **/
    mp4_crt_write_int(mp4_file_pos, 0x2E, real_meta_file);
    mp4_crt_write_char_group(mp4_file_pos, "mdat", 4, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x01808080, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x0E118080, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x8009051F, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x0F808080, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x020001C0, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x10126104, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x1FC00000, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x1FC00000, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x44282282, real_meta_file);
    mp4_crt_write_short(mp4_file_pos, 0x9F80, real_meta_file);

    //moov size
    video_file_info->FC_ATOM[moov].pos = mp4_file_pos;
    mp4_crt_write_int(mp4_file_pos, 0x0, real_meta_file); //<==position??
    mp4_crt_write_char_group(mp4_file_pos, "moov", 4, real_meta_file);

    /* moov->mvhd  size*/
    mp4_crt_write_int(mp4_file_pos, 0x6c, real_meta_file);                           //<==position??
    mp4_crt_write_char_group(mp4_file_pos, "mvhd", 4, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x0, real_meta_file);                            //version + flags
    create_time = mpeg4_cratetime_translate(&test_time);
    mp4_crt_write_int(mp4_file_pos, file_creat_struct->create_time, real_meta_file); //create time,just for test
    mp4_crt_write_int(mp4_file_pos, file_creat_struct->create_time, real_meta_file); //modification time, just for test
    mp4_crt_write_int(mp4_file_pos, file_creat_struct->time_scale, real_meta_file);  //time scale

    result = video_enc_get_total_duration(file_creat_struct, &duration);

    if (result != MEDIA_STATUS_OK)
    {
        VIDEO_ASSERT(0);
        return result;
    }

    file_creat_struct->total_duration = (kal_uint32)VIDEO_ANYBASE_TO_MS(duration, file_creat_struct->time_scale);

    mp4_crt_write_int(mp4_file_pos, duration, real_meta_file); //duration
    mp4_crt_write_int(mp4_file_pos, 0x00010000, real_meta_file);
    mp4_crt_write_short(mp4_file_pos, 0x0100, real_meta_file);
    //   mp4_crt_write_zero_group(mp4_file_pos,16,real_meta_file);
    mp4_crt_write_zero_group(mp4_file_pos, 10, real_meta_file);
    pre_defined_hr(&mp4_file_pos, real_meta_file);
    mp4_crt_write_zero_group(mp4_file_pos, 24, real_meta_file);

    if (file_creat_struct->short_header == 0)
    {
        mp4_crt_write_int(mp4_file_pos, 0x04, real_meta_file);
    }
    else
    {
        mp4_crt_write_int(mp4_file_pos, 0x10000, real_meta_file);
    }

    /** moov->iods **/
    if (file_creat_struct->short_header == 0)
    {
        mp4_crt_write_int(mp4_file_pos, 0x2A, real_meta_file);

        mp4_crt_write_char_group(mp4_file_pos, "iods", 4, real_meta_file);
        mp4_crt_write_int(mp4_file_pos, 0x0, real_meta_file);
        mp4_crt_write_int(mp4_file_pos, 0x10808080, real_meta_file);
        mp4_crt_write_int(mp4_file_pos, 0x19004FFF, real_meta_file);
        mp4_crt_write_int(mp4_file_pos, 0xFFFF03FF, real_meta_file);
        mp4_crt_write_int(mp4_file_pos, 0x0E808080, real_meta_file);
        mp4_crt_write_int(mp4_file_pos, 0x04000000, real_meta_file);
        mp4_crt_write_int(mp4_file_pos, 0x020E8080, real_meta_file);
        mp4_crt_write_int(mp4_file_pos, 0x80040000, real_meta_file);
        mp4_crt_write_short(mp4_file_pos, 0x0003, real_meta_file);
    }

    /** moov->video trak **/
    video_file_info->FC_ATOM[trak].pos = mp4_file_pos;
    mp4_crt_write_int(mp4_file_pos, 0x0, real_meta_file); //<==position??
    mp4_crt_write_char_group(mp4_file_pos, "trak", 4, real_meta_file);

    /** moov->trak->tkhd **/
    mp4_crt_write_int(mp4_file_pos, 0x5c, real_meta_file); //<==position??
    mp4_crt_write_char_group(mp4_file_pos, "tkhd", 4, real_meta_file);

    if (file_creat_struct->short_header == 0)
    {
        mp4_crt_write_int(mp4_file_pos, 0x1, real_meta_file);
    } // version+flag
    else
    {
        mp4_crt_write_int(mp4_file_pos, 0x7, real_meta_file);
    }                                                                                // version+flag

    mp4_crt_write_int(mp4_file_pos, file_creat_struct->create_time, real_meta_file); //create time
    mp4_crt_write_int(mp4_file_pos, file_creat_struct->create_time, real_meta_file); //modification time
    mp4_crt_write_int(mp4_file_pos, 1, real_meta_file);                              //Track ID
    mp4_crt_write_int(mp4_file_pos, 0, real_meta_file);                              //Reserved
    mp4_crt_write_int(mp4_file_pos, duration, real_meta_file);
    mp4_crt_write_zero_group(mp4_file_pos, 16, real_meta_file);
    result = pre_defined_hr(&mp4_file_pos, real_meta_file);

    if (result != MEDIA_STATUS_OK)
    {
        VIDEO_ASSERT(0);
        return result;
    }

    if (file_creat_struct->short_header == 0)
    {
        mp4_crt_write_int(mp4_file_pos, 0x01400000, real_meta_file); //Pre-defined
        mp4_crt_write_int(mp4_file_pos, 0x00f00000, real_meta_file); //Pre-defined
    }
    else
    {
        mp4_crt_write_int(mp4_file_pos, file_creat_struct->frame_width << 16, real_meta_file);  //Pre-defined
        mp4_crt_write_int(mp4_file_pos, file_creat_struct->frame_height << 16, real_meta_file); //Pre-defined
    }

    /** moov->trak->mdia **/
    video_file_info->FC_ATOM[mdia].pos = mp4_file_pos;
    mp4_crt_write_int(mp4_file_pos, 0x0, real_meta_file); //<==position??
    mp4_crt_write_char_group(mp4_file_pos, "mdia", 4, real_meta_file);
    /** moov->trak->mdhd **/
    mp4_crt_write_int(mp4_file_pos, 0x20, real_meta_file);                           //<==position??
    mp4_crt_write_char_group(mp4_file_pos, "mdhd", 4, real_meta_file);
    mp4_crt_write_int(mp4_file_pos, 0x0, real_meta_file);                            // version+flag
    mp4_crt_write_int(mp4_file_pos, file_creat_struct->create_time, real_meta_file); //create time
    mp4_crt_write_int(mp4_file_pos, file_creat_struct->create_time, real_meta_file); //modification time
    mp4_crt_write_int(mp4_file_pos, file_creat_struct->time_scale, real_meta_file);  //time scale
    mp4_crt_write_int(mp4_file_pos, duration, real_meta_file);                       //time duration

    if (file_creat_struct->short_header == 0)
    {
        mp4_crt_write_int(mp4_file_pos, 0x0, real_meta_file); // language+quality
    }
    else
    {
        mp4_crt_write_int(mp4_file_pos, 0x55C40000, real_meta_file); // language+quality
    }

    /** moov->trak->hdlr **/
    mp4_crt_write_int(mp4_file_pos, 0x21, real_meta_file);
    mp4_crt_write_char_group(mp4_file_pos, "hdlr", 4, real_meta_file);
    mp4_crt_write_zero_group(mp4_file_pos, 8, real_meta_file);  //predefined, component type
    mp4_crt_write_char_group(mp4_file_pos, "vide", 4, real_meta_file);
    mp4_crt_write_zero_group(mp4_file_pos, 13, real_meta_file); //reserved

    /** moov->trak->minf **/
    video_file_info->FC_ATOM[minf].pos = mp4_file_pos;
    mp4_crt_write_int(mp4_file_pos, 0x0, real_meta_file);
    mp4_crt_write_char_group(mp4_file_pos, "minf", 4, real_meta_file);
    /** moov->trak->minf->vmhd **/
    mp4_crt_write_int(mp4_file_pos, 20, real_meta_file);               //size
    mp4_crt_write_char_group(mp4_file_pos, "vmhd", 4, real_meta_file); //vmhd
    mp4_crt_write_int(mp4_file_pos, 1, real_meta_file);                // version+flag
    mp4_crt_write_zero_group(mp4_file_pos, 8, real_meta_file);         //Predefined

    /** moov->trak->minf->dinf **/
    mp4_crt_write_int(mp4_file_pos, 36, real_meta_file);
    mp4_crt_write_char_group(mp4_file_pos, "dinf", 4, real_meta_file); //dinf
    mp4_crt_write_int(mp4_file_pos, 0x01C, real_meta_file);
    mp4_crt_write_char_group(mp4_file_pos, "dref", 4, real_meta_file); //dref
    mp4_crt_write_int(mp4_file_pos, 0, real_meta_file);                // version+flag
    mp4_crt_write_int(mp4_file_pos, 1, real_meta_file);                // number of entries
    mp4_crt_write_int(mp4_file_pos, 12, real_meta_file);               //size
    mp4_crt_write_char_group(mp4_file_pos, "url ", 4, real_meta_file); //type = url
    mp4_crt_write_int(mp4_file_pos, 1, real_meta_file);                // version+flag

    /** moov->trak->minf->stbl **/
    video_file_info->FC_ATOM[stbl].pos = mp4_file_pos;
    mp4_crt_write_int(mp4_file_pos, 0, real_meta_file);
    mp4_crt_write_char_group(mp4_file_pos, "stbl", 4, real_meta_file); //stbl

    /** moov->trak->minf->stbl->stsd **/
    video_file_info->FC_ATOM[stsd].pos = mp4_file_pos;
    mp4_crt_write_int(mp4_file_pos, 0, real_meta_file);
    mp4_crt_write_char_group(mp4_file_pos, "stsd", 4, real_meta_file); //stsd
    mp4_crt_write_int(mp4_file_pos, 0, real_meta_file);                //version, flags
    mp4_crt_write_int(mp4_file_pos, 1, real_meta_file);                //number of entries

    if (file_creat_struct->short_header == 0)
    {
        kal_uint32 max_frame_length;

        kal_uint32 frame_length_sum_per_second;

        video_file_info->FC_ATOM[s263].pos = 0xffffffff;
        video_file_info->FC_ATOM[mp4v].pos = mp4_file_pos;
        mp4_crt_write_int(mp4_file_pos, 0xad, real_meta_file); //<==position??
        mp4_crt_write_char_group(mp4_file_pos, "mp4v", 4, real_meta_file);