npolibvlc.cpp

uclinux 下的vlc播放器源代码

                return INVOKERESULT_NO_SUCH_METHOD;
            case ID_playlist_next:
                if( argCount == 0 )
                {
                    libvlc_playlist_next(p_plugin->getVLC(), &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            case ID_playlist_prev:
                if( argCount == 0 )
                {
                    libvlc_playlist_prev(p_plugin->getVLC(), &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            case ID_playlist_clear: /* deprecated */
                if( argCount == 0 )
                {
                    libvlc_playlist_clear(p_plugin->getVLC(), &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            case ID_playlist_removeitem: /* deprecated */
                if( (argCount == 1) && isNumberValue(args[0]) )
                {
                    libvlc_playlist_delete_item(p_plugin->getVLC(), numberValue(args[0]), &ex);
                    if( libvlc_exception_raised(&ex) )
                    {
                        NPN_SetException(this, libvlc_exception_get_message(&ex));
                        libvlc_exception_clear(&ex);
                        return INVOKERESULT_GENERIC_ERROR;
                    }
                    else
                    {
                        VOID_TO_NPVARIANT(result);
                        return INVOKERESULT_NO_ERROR;
                    }
                }
                return INVOKERESULT_NO_SUCH_METHOD;
            default:
                ;
        }
    }
    return INVOKERESULT_GENERIC_ERROR;
}

void LibvlcPlaylistNPObject::parseOptions(const NPString &nps, int *i_options, char*** ppsz_options)
{
    if( nps.utf8length )
    {
        char *s = stringValue(nps);
        char *val = s;
        if( val )
        {
            long capacity = 16;
            char **options = (char **)malloc(capacity*sizeof(char *));
            if( options )
            {
                int nOptions = 0;

                char *end = val + nps.utf8length;
                while( val < end )
                {
                    // skip leading blanks
                    while( (val < end)
                        && ((*val == ' ' ) || (*val == '\t')) )
                        ++val;

                    char *start = val;
                    // skip till we get a blank character
                    while( (val < end)
                        && (*val != ' ' )
                        && (*val != '\t') )
                    {
                        char c = *(val++);
                        if( ('\'' == c) || ('"' == c) )
                        {
                            // skip till end of string
                            while( (val < end) && (*(val++) != c ) );
                        }
                    }

                    if( val > start )
                    {
                        if( nOptions == capacity )
                        {
                            capacity += 16;
                            char **moreOptions = (char **)realloc(options, capacity*sizeof(char*)); 
                            if( ! moreOptions )
                            {
                                /* failed to allocate more memory */
                                delete s;
                                /* return what we got so far */
                                *i_options = nOptions;
                                *ppsz_options = options;
                                return;
                            }
                            options = moreOptions;
                        }
                        *(val++) = '\0';
                        options[nOptions++] = strdup(start);
                    }
                    else
                        // must be end of string
                        break;
                }
                *i_options = nOptions;
                *ppsz_options = options;
            }
            delete s;
        }
    }
}

void LibvlcPlaylistNPObject::parseOptions(NPObject *obj, int *i_options, char*** ppsz_options)
{
    /* WARNING: Safari does not implement NPN_HasProperty/NPN_HasMethod */

    NPVariant value;

    /* we are expecting to have a Javascript Array object */
    NPIdentifier propId = NPN_GetStringIdentifier("length");
    if( NPN_GetProperty(_instance, obj, propId, &value) )
    {
        int count = numberValue(value);
        NPN_ReleaseVariantValue(&value);

        if( count )
        {
            long capacity = 16;
            char **options = (char **)malloc(capacity*sizeof(char *));
            if( options )
            {
                int nOptions = 0;

                while( nOptions < count )
                {
                    propId = NPN_GetIntIdentifier(nOptions);
                    if( ! NPN_GetProperty(_instance, obj, propId, &value) )
                        /* return what we got so far */
                        break;

                    if( ! NPVARIANT_IS_STRING(value) )
                    {
                        /* return what we got so far */
                        NPN_ReleaseVariantValue(&value);
                        break;
                    }

                    if( nOptions == capacity )
                    {
                        capacity += 16;
                        char **moreOptions = (char **)realloc(options, capacity*sizeof(char*)); 
                        if( ! moreOptions )
                        {
                            /* failed to allocate more memory */
                            NPN_ReleaseVariantValue(&value);
                            /* return what we got so far */
                            *i_options = nOptions;
                            *ppsz_options = options;
                            break;
                        }
                        options = moreOptions;
                    }

                    options[nOptions++] = stringValue(value);
                }
                *i_options = nOptions;
                *ppsz_options = options;
            }
        }
    }
}

/*
** implementation of libvlc video object
*/

const NPUTF8 * const LibvlcVideoNPObject::propertyNames[] = 
{
    "fullscreen",
    "height",
    "width",
    "aspectRatio"
};

enum LibvlcVideoNPObjectPropertyIds
{
    ID_video_fullscreen,
    ID_video_height,
    ID_video_width,
    ID_video_aspectratio
};

const int LibvlcVideoNPObject::propertyCount = sizeof(LibvlcVideoNPObject::propertyNames)/sizeof(NPUTF8 *);

RuntimeNPObject::InvokeResult LibvlcVideoNPObject::getProperty(int index, NPVariant &result)
{
    /* is plugin still running */
    if( _instance->pdata )
    {
        VlcPlugin* p_plugin = reinterpret_cast<VlcPlugin*>(_instance->pdata);
        libvlc_exception_t ex;
        libvlc_exception_init(&ex);

        libvlc_input_t *p_input = libvlc_playlist_get_input(p_plugin->getVLC(), &ex);
        if( libvlc_exception_raised(&ex) )
        {
            NPN_SetException(this, libvlc_exception_get_message(&ex));
            libvlc_exception_clear(&ex);
            return INVOKERESULT_GENERIC_ERROR;
        }

        switch( index )
        {
            case ID_video_fullscreen:
            {
                int val = libvlc_get_fullscreen(p_input, &ex);
                libvlc_input_free(p_input);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                BOOLEAN_TO_NPVARIANT(val, result);
                return INVOKERESULT_NO_ERROR;
            }
            case ID_video_height:
            {
                int val = libvlc_video_get_height(p_input, &ex);
                libvlc_input_free(p_input);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                INT32_TO_NPVARIANT(val, result);
                return INVOKERESULT_NO_ERROR;
            }
            case ID_video_width:
            {
                int val = libvlc_video_get_width(p_input, &ex);
                libvlc_input_free(p_input);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                INT32_TO_NPVARIANT(val, result);
                return INVOKERESULT_NO_ERROR;
            }
            case ID_video_aspectratio:
            {
                NPUTF8 *psz_aspect = libvlc_video_get_aspect_ratio(p_input, &ex);
                libvlc_input_free(p_input);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                if( !psz_aspect )
                    return INVOKERESULT_GENERIC_ERROR;

                STRINGZ_TO_NPVARIANT(psz_aspect, result);
                return INVOKERESULT_NO_ERROR;
            }
        }
        libvlc_input_free(p_input);
    }
    return INVOKERESULT_GENERIC_ERROR;
}

RuntimeNPObject::InvokeResult LibvlcVideoNPObject::setProperty(int index, const NPVariant &value)
{
    /* is plugin still running */
    if( _instance->pdata )
    {
        VlcPlugin* p_plugin = reinterpret_cast<VlcPlugin*>(_instance->pdata);
        libvlc_exception_t ex;
        libvlc_exception_init(&ex);

        libvlc_input_t *p_input = libvlc_playlist_get_input(p_plugin->getVLC(), &ex);
        if( libvlc_exception_raised(&ex) )
        {
            NPN_SetException(this, libvlc_exception_get_message(&ex));
            libvlc_exception_clear(&ex);
            return INVOKERESULT_GENERIC_ERROR;
        }

        switch( index )
        {
            case ID_video_fullscreen:
            {
                if( ! NPVARIANT_IS_BOOLEAN(value) )
                {
                    libvlc_input_free(p_input);
                    return INVOKERESULT_INVALID_VALUE;
                }

                int val = NPVARIANT_TO_BOOLEAN(value);
                libvlc_set_fullscreen(p_input, val, &ex);
                libvlc_input_free(p_input);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                return INVOKERESULT_NO_ERROR;
            }
            case ID_video_aspectratio:
            {
                char *psz_aspect = NULL;

                if( ! NPVARIANT_IS_STRING(value) )
                {
                    libvlc_input_free(p_input);
                    return INVOKERESULT_INVALID_VALUE;
                }

                psz_aspect = stringValue(NPVARIANT_TO_STRING(value));
                if( !psz_aspect )
                {
                    libvlc_input_free(p_input);
                    return INVOKERESULT_GENERIC_ERROR;
                }

                libvlc_video_set_aspect_ratio(p_input, psz_aspect, &ex);
                delete psz_aspect;
                libvlc_input_free(p_input);
                if( libvlc_exception_raised(&ex) )
                {
                    NPN_SetException(this, libvlc_exception_get_message(&ex));
                    libvlc_exception_clear(&ex);
                    return INVOKERESULT_GENERIC_ERROR;
                }
                return INVOKERESULT_NO_ERROR;
            }
        }
        libvlc_input_free(p_input);
    }
    return INVOKERESULT_GENER