realvideo.c

VLC Player Source Code

        {
            b_so_opened = true;
            break;
        }

        if( asprintf( &g_decode_path, "%s/drv3.so.6.0", psz_paths + i ) != -1 )
        {
            p_sys->rv_handle = load_syms_linux(p_dec, g_decode_path);
            free( g_decode_path );
        }
        if( p_sys->rv_handle )
        {
            b_so_opened = true;
            break;
        }

        msg_Dbg( p_dec, "Cannot load real decoder library: %s", g_decode_path);
    }
#endif

    if(!b_so_opened )
    {
        msg_Err( p_dec, "Cannot any real decoder library" );
        free( p_sys );
        return VLC_EGENERIC;
    }

    lock = var_AcquireMutex( "rm_mutex" );
    if ( lock == NULL )
        return VLC_EGENERIC;

    p_sys->handle=NULL;
    #ifdef WIN32
    if (dll_type == 1)
        result=(*wrvyuv_init)(&init_data, &p_sys->handle);
    else
    #endif
        result=(*rvyuv_init)(&init_data, &p_sys->handle);
    if (result)
    {
        msg_Err( p_dec, "Cannot Init real decoder library: %s",  g_decode_path);
        free( p_sys );
        return VLC_EGENERIC;
    }

    /* setup rv30 codec (codec sub-type and image dimensions): */
    /*if ( p_dec->fmt_in.i_codec == VLC_FOURCC('R','V','3','0') )*/
    if (p_vide[1]>=0x20200002)
    {
        int i, cmsg_cnt;
        uint32_t cmsg24[16]={p_dec->fmt_in.video.i_width,p_dec->fmt_in.video.i_height};
        cmsg_data_t cmsg_data={0x24,1+(p_vide[1]&7), &cmsg24[0]};
        cmsg_cnt = (p_vide[1]&7)*2;
        if (i_vide - 8 < cmsg_cnt) {
                    cmsg_cnt = i_vide - 8;
        }
        for (i = 0; i < cmsg_cnt; i++)
            cmsg24[2+i] = p_vide[8+i]*4;
        #ifdef WIN32
        if (dll_type == 1)
            (*wrvyuv_custom_message)(&cmsg_data,p_sys->handle);
        else
        #endif
            (*rvyuv_custom_message)(&cmsg_data,p_sys->handle);
    }
    /*
    es_format_Init( &p_dec->fmt_out, VIDEO_ES, VLC_FOURCC( 'Y','V','1','2' ));
    es_format_Init( &p_dec->fmt_out, VIDEO_ES, VLC_FOURCC( 'Y','U','Y','2' ));
     */
    es_format_Init( &p_dec->fmt_out, VIDEO_ES, VLC_FOURCC( 'I', '4', '2', '0'));
     
    p_dec->fmt_out.video.i_width = p_dec->fmt_in.video.i_width;
    p_dec->fmt_out.video.i_height= p_dec->fmt_in.video.i_height;
    p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * p_dec->fmt_in.video.i_width / p_dec->fmt_in.video.i_height;
    p_sys->inited = 0;

    vlc_mutex_unlock( lock );
    return VLC_SUCCESS;
}

/*****************************************************************************
 * Open: probe the decoder and return score
 *****************************************************************************
 * Tries to launch a decoder and return score so that the interface is able
 * to choose.
 *****************************************************************************/
static int Open( vlc_object_t *p_this )
{
    decoder_t *p_dec = (decoder_t*)p_this;

    /* create a mutex */
    var_Create( p_this->p_libvlc, "rm_mutex", VLC_VAR_MUTEX );

    switch ( p_dec->fmt_in.i_codec )
    {
    case VLC_FOURCC('R','V','1','0'): 
    case VLC_FOURCC('R','V','2','0'): 
    case VLC_FOURCC('R','V','3','0'):
    case VLC_FOURCC('R','V','4','0'): 
        p_dec->p_sys = NULL;
        p_dec->pf_decode_video = DecodeVideo;
        return InitVideo(p_dec);

    default:
        return VLC_EGENERIC;
    }
}

/*****************************************************************************
 * Close:
 *****************************************************************************/
static void Close( vlc_object_t *p_this )
{
    decoder_t     *p_dec = (decoder_t*)p_this;
    decoder_sys_t *p_sys = p_dec->p_sys;
    vlc_mutex_t   *lock;

    /* get lock, avoid segfault */
    lock = var_AcquireMutex( "rm_mutex" );

    #ifdef WIN32
    if (dll_type == 1)
    {
        if (wrvyuv_free)
            wrvyuv_free(p_sys->handle);
    }
    else
    #endif
        if (rvyuv_free)
            rvyuv_free(p_sys->handle);
#ifdef WIN32
    if (dll_type == 1)
    {
        if (p_sys->rv_handle)
            FreeLibrary(p_sys->rv_handle);
    }
    else
#endif
        p_sys->rv_handle=NULL;

    if (p_sys->plane)
    {
        free(p_sys->plane);
        p_sys->plane = NULL;
    }

    msg_Dbg( p_dec, "FreeLibrary ok." );
#ifdef LOADER
    Restore_LDT_Keeper( p_sys->ldt_fs );
    msg_Dbg( p_dec, "Restore_LDT_Keeper" );
#endif
    p_sys->inited = 0;

    if ( lock )
    vlc_mutex_unlock( lock );

    if ( p_sys )
        free( p_sys );
}

/*****************************************************************************
 * DecodeVideo:
 *****************************************************************************/
static picture_t *DecodeVideo( decoder_t *p_dec, block_t **pp_block )
{
    decoder_sys_t *p_sys = p_dec->p_sys;
    vlc_mutex_t   *lock;
    block_t       *p_block;
    picture_t     *p_pic;
    mtime_t       i_pts;
    int           result;

    /* We must do open and close in the same thread (unless we do
     * Setup_LDT_Keeper in the main thread before all others */
    if ( pp_block == NULL || *pp_block == NULL )
    {
        return NULL;
    }
    p_block = *pp_block;
    *pp_block = NULL;

    i_pts = p_block->i_pts ? p_block->i_pts : p_block->i_dts;

    lock = var_AcquireMutex( "rm_mutex" );
    if ( lock == NULL )
        return NULL;

    p_pic = p_dec->pf_vout_buffer_new( p_dec );

    if ( p_pic )
    {
        unsigned int transform_out[5];
        dp_hdr_t dp_hdr;
        transform_in_t transform_in;
        uint32_t pkg_len = ((uint32_t*)p_block->p_buffer)[0];
        unsigned char* dp_data=((unsigned char*)p_block->p_buffer)+8;
        uint32_t* extra=(uint32_t*)(((char*)p_block->p_buffer)+8+pkg_len);
        uint32_t img_size;


        dp_hdr.len = pkg_len;
        dp_hdr.chunktab = 8 + pkg_len;
        dp_hdr.chunks = ((uint32_t*)p_block->p_buffer)[1]-1;
        dp_hdr.timestamp = i_pts;

        memset(&transform_in, 0, sizeof(transform_in_t));

        transform_in.len = dp_hdr.len;
        transform_in.extra = extra;
        transform_in.chunks = dp_hdr.chunks;
        transform_in.timestamp = dp_hdr.timestamp;

        memset (p_sys->plane, 0, p_dec->fmt_in.video.i_width * p_dec->fmt_in.video.i_height *3/2 );

        #ifdef WIN32
        if (dll_type == 1)
            result=(*wrvyuv_transform)(dp_data, p_sys->plane, &transform_in, transform_out, p_sys->handle);
        else
        #endif
            result=(*rvyuv_transform)(dp_data, p_sys->plane, &transform_in, transform_out, p_sys->handle);

        /* msg_Warn(p_dec, "Real Size %d X %d", transform_out[3],
                 transform_out[4]); */
        /* some bug rm file will print the messages :
                [00000551] realvideo decoder warning: Real Size 320 X 240
                [00000551] realvideo decoder warning: Real Size 480 X 272
                [00000551] realvideo decoder warning: Real Size 320 X 240
                [00000551] realvideo decoder warning: Real Size 320 X 240
                ...
            so it needs fixing!
        */
        if ( p_sys->inited == 0 )
        {
            /* fix and get the correct image size! */
            if ( p_dec->fmt_in.video.i_width != transform_out[3]
             || p_dec->fmt_in.video.i_height  != transform_out[4] )
            {
                msg_Warn(p_dec, "Warning, Real's Header give a wrong "
                         "information about media's width and height!\n"
                         "\tRealHeader: \t %d X %d  \t %d X %d",
                         p_dec->fmt_in.video.i_width,
                         p_dec->fmt_in.video.i_height,
                         transform_out[3],transform_out[4]);
                
                if ( p_dec->fmt_in.video.i_width * p_dec->fmt_in.video.i_height >= transform_out[3] * transform_out[4] )
                {
                    p_dec->fmt_out.video.i_width = 
                    p_dec->fmt_out.video.i_visible_width = 
                    p_dec->fmt_in.video.i_width = transform_out[3] ;

                    p_dec->fmt_out.video.i_height= 
                    p_dec->fmt_out.video.i_visible_height = 
                    p_dec->fmt_in.video.i_height= transform_out[4];

                    p_dec->fmt_out.video.i_aspect = VOUT_ASPECT_FACTOR * p_dec->fmt_in.video.i_width / p_dec->fmt_in.video.i_height;
                }
                else
                {
                    // TODO: realloc plane's size! but [in fact] it maybe not happen! 
                    msg_Err(p_dec,"plane space not enough ,skip");
                }
            }
            p_sys->inited = 1;
        }

        img_size = p_dec->fmt_in.video.i_width * p_dec->fmt_in.video.i_height;
        memcpy( p_pic->p[0].p_pixels, p_sys->plane,  img_size);
        memcpy( p_pic->p[1].p_pixels, p_sys->plane + img_size, img_size/4);
        memcpy( p_pic->p[2].p_pixels, p_sys->plane + img_size * 5/4, img_size/4);
        p_pic->date = i_pts ;

        /*  real video frame is small( frame and frame's time-shift is short), 
            so it will become late picture easier (when render-time changed)and
            droped by video-output.*/
        p_pic->b_force = 1;
    }

    vlc_mutex_unlock( lock );

    block_Release( p_block );
    return p_pic;
}