es_out.c

uclinux 下的vlc播放器源代码

        return; /* Nothing to do */

    if( p_sys->p_pgrm )
    {
        es_out_pgrm_t *old = p_sys->p_pgrm;
        msg_Dbg( p_input, "unselecting program id=%d", old->i_id );

        for( i = 0; i < p_sys->i_es; i++ )
        {
            if( p_sys->es[i]->p_pgrm == old && p_sys->es[i]->p_dec &&
                p_sys->i_mode != ES_OUT_MODE_ALL )
                EsUnselect( out, p_sys->es[i], VLC_TRUE );
        }

        p_sys->p_es_audio = NULL;
        p_sys->p_es_sub = NULL;
        p_sys->p_es_video = NULL;
    }

    msg_Dbg( p_input, "selecting program id=%d", p_pgrm->i_id );

    /* Mark it selected */
    p_pgrm->b_selected = VLC_TRUE;

    /* Switch master stream */
    if( p_sys->p_pgrm && p_sys->p_pgrm->clock.b_master )
    {
        p_sys->p_pgrm->clock.b_master = VLC_FALSE;
    }
    p_pgrm->clock.b_master = VLC_TRUE;
    p_sys->p_pgrm = p_pgrm;

    /* Update "program" */
    val.i_int = p_pgrm->i_id;
    var_Change( p_input, "program", VLC_VAR_SETVALUE, &val, NULL );

    /* Update "es-*" */
    var_Change( p_input, "audio-es", VLC_VAR_CLEARCHOICES, NULL, NULL );
    var_Change( p_input, "video-es", VLC_VAR_CLEARCHOICES, NULL, NULL );
    var_Change( p_input, "spu-es",   VLC_VAR_CLEARCHOICES, NULL, NULL );
    for( i = 0; i < p_sys->i_es; i++ )
    {
        if( p_sys->es[i]->p_pgrm == p_sys->p_pgrm )
            EsOutESVarUpdate( out, p_sys->es[i], VLC_FALSE );
        EsOutSelect( out, p_sys->es[i], VLC_FALSE );
    }

    /* Update now playing if defined per program */
    if( p_pgrm->psz_now_playing )
    {
        char *psz_cat = malloc( strlen(_("Program")) + 10 );

        sprintf( psz_cat, "%s %d", _("Program"), p_pgrm->i_id );
        input_Control( p_input, INPUT_ADD_INFO, _(VLC_META_INFO_CAT),
                       _(VLC_META_NOW_PLAYING), "%s", p_pgrm->psz_now_playing );
        free( psz_cat );
    }


    var_SetBool( p_sys->p_input, "intf-change", VLC_TRUE );
}

/* EsOutAddProgram:
 *  Add a program
 */
static es_out_pgrm_t *EsOutProgramAdd( es_out_t *out, int i_group )
{
    es_out_sys_t      *p_sys = out->p_sys;
    input_thread_t    *p_input = p_sys->p_input;
    vlc_value_t       val;

    es_out_pgrm_t *p_pgrm = malloc( sizeof( es_out_pgrm_t ) );

    /* Init */
    p_pgrm->i_id = i_group;
    p_pgrm->i_es = 0;
    p_pgrm->b_selected = VLC_FALSE;
    p_pgrm->psz_now_playing = NULL;
    input_ClockInit( &p_pgrm->clock, VLC_FALSE, p_input->input.i_cr_average );

    /* Append it */
    TAB_APPEND( p_sys->i_pgrm, p_sys->pgrm, p_pgrm );

    /* Update "program" variable */
    val.i_int = i_group;
    var_Change( p_input, "program", VLC_VAR_ADDCHOICE, &val, NULL );

    if( i_group == var_GetInteger( p_input, "program" ) )
    {
        EsOutProgramSelect( out, p_pgrm );
    }
    else
    {
        var_SetBool( p_sys->p_input, "intf-change", VLC_TRUE );
    }
    return p_pgrm;
}

/* EsOutDelProgram:
 *  Delete a program
 */
static int EsOutProgramDel( es_out_t *out, int i_group )
{
    es_out_sys_t      *p_sys = out->p_sys;
    input_thread_t    *p_input = p_sys->p_input;
    es_out_pgrm_t     *p_pgrm = NULL;
    vlc_value_t       val;
    int               i;

    for( i = 0; i < p_sys->i_pgrm; i++ )
    {
        if( p_sys->pgrm[i]->i_id == i_group )
        {
            p_pgrm = p_sys->pgrm[i];
            break;
        }
    }

    if( p_pgrm == NULL )
        return VLC_EGENERIC;

    if( p_pgrm->i_es )
    {
        msg_Dbg( p_input, "can't delete program %d which still has %i ES",
                 i_group, p_pgrm->i_es );
        return VLC_EGENERIC;
    }

    TAB_REMOVE( p_sys->i_pgrm, p_sys->pgrm, p_pgrm );

    /* If program is selected we need to unselect it */
    if( p_sys->p_pgrm == p_pgrm ) p_sys->p_pgrm = 0;

    if( p_pgrm->psz_now_playing ) free( p_pgrm->psz_now_playing );
    free( p_pgrm );

    /* Update "program" variable */
    val.i_int = i_group;
    var_Change( p_input, "program", VLC_VAR_DELCHOICE, &val, NULL );

    var_SetBool( p_sys->p_input, "intf-change", VLC_TRUE );

    return VLC_SUCCESS;
}

/* EsOutProgramMeta:
 */
static void EsOutProgramMeta( es_out_t *out, int i_group, vlc_meta_t *p_meta )
{
    es_out_sys_t      *p_sys = out->p_sys;
    es_out_pgrm_t     *p_pgrm = NULL;
    input_thread_t    *p_input = p_sys->p_input;
    char              *psz_cat = malloc( strlen(_("Program")) + 10 );
    char              *psz_name = NULL;
    char              *psz_now_playing = NULL;
    char              *psz_provider = NULL;
    int i;

    msg_Dbg( p_input, "EsOutProgramMeta: number=%d", i_group );
    sprintf( psz_cat, "%s %d", _("Program"), i_group );

    for( i = 0; i < p_meta->i_meta; i++ )
    {
        msg_Dbg( p_input, "  - %s = %s", p_meta->name[i], p_meta->value[i] );

        input_Control( p_input, INPUT_ADD_INFO, psz_cat,
                      _(p_meta->name[i]), "%s", p_meta->value[i] );
        if( !strcasecmp( p_meta->name[i], "Name" ) )
            psz_name = p_meta->value[i];
        else if( !strcasecmp( p_meta->name[i], "Provider" ) )
            psz_provider = p_meta->value[i];
        else if( !strcasecmp( p_meta->name[i], VLC_META_NOW_PLAYING ) )
            psz_now_playing = p_meta->value[i];
    }

    if( !psz_name && !psz_now_playing )
    {
        free( psz_cat );
        return;
    }

    for( i = 0; i < p_sys->i_pgrm; i++ )
    {
        if( p_sys->pgrm[i]->i_id == i_group )
        {
            p_pgrm = p_sys->pgrm[i];
            break;
        }
    }

    if( p_pgrm == NULL ) {
	free( psz_cat );
	msg_Dbg( p_input, "Trying to add meta for non-existing program" );
	return;
    }

    /* Update the description text of the program */
    if( psz_name && *psz_name )
    {
        vlc_value_t val;
        vlc_value_t text;

        /* ugly but it works */
        val.i_int = i_group;
        var_Change( p_input, "program", VLC_VAR_DELCHOICE, &val, NULL );

        if( psz_provider && *psz_provider )
        {
            asprintf( &text.psz_string, "%s [%s]", psz_name, psz_provider );
            var_Change( p_input, "program", VLC_VAR_ADDCHOICE, &val, &text );
            free( text.psz_string );
        }
        else
        {
            text.psz_string = psz_name;
            var_Change( p_input, "program", VLC_VAR_ADDCHOICE, &val, &text );
        }
    }
    if( psz_now_playing )
    {
        if( p_pgrm->psz_now_playing ) free( p_pgrm->psz_now_playing );
        p_pgrm->psz_now_playing = strdup(psz_now_playing);

        if( p_sys->p_pgrm == p_pgrm )
        {
            input_Control( p_input, INPUT_ADD_INFO, _(VLC_META_INFO_CAT),
                           _(VLC_META_NOW_PLAYING), "%s", psz_now_playing );
        }
    }
    free( psz_cat );
}

/* EsOutAdd:
 *  Add an es_out
 */
static es_out_id_t *EsOutAdd( es_out_t *out, es_format_t *fmt )
{
    es_out_sys_t      *p_sys = out->p_sys;
    input_thread_t    *p_input = p_sys->p_input;

    es_out_id_t       *es = malloc( sizeof( es_out_id_t ) );
    es_out_pgrm_t     *p_pgrm = NULL;
    int i;

    if( fmt->i_group < 0 )
    {
        msg_Err( p_input, "invalid group number" );
        return NULL;
    }

    /* Search the program */
    for( i = 0; i < p_sys->i_pgrm; i++ )
    {
        if( fmt->i_group == p_sys->pgrm[i]->i_id )
        {
            p_pgrm = p_sys->pgrm[i];
            break;
        }
    }
    if( p_pgrm == NULL )
    {
        /* Create a new one */
        p_pgrm = EsOutProgramAdd( out, fmt->i_group );
    }

    /* Increase ref count for program */
    p_pgrm->i_es++;

    /* Set up ES */
    if( fmt->i_id < 0 )
        fmt->i_id = out->p_sys->i_id;
    es->i_id = fmt->i_id;
    es->p_pgrm = p_pgrm;
    es_format_Copy( &es->fmt, fmt );
    es->i_preroll_end = -1;
    es->b_discontinuity = VLC_FALSE;

    switch( fmt->i_cat )
    {
    case AUDIO_ES:
        es->i_channel = p_sys->i_audio;
        break;

    case VIDEO_ES:
        es->i_channel = p_sys->i_video;
        if( fmt->video.i_frame_rate && fmt->video.i_frame_rate_base )
            vlc_ureduce( &es->fmt.video.i_frame_rate,
                         &es->fmt.video.i_frame_rate_base,
                         fmt->video.i_frame_rate,
                         fmt->video.i_frame_rate_base, 0 );
        break;

    case SPU_ES:
        es->i_channel = p_sys->i_sub;
        break;

    default:
        es->i_channel = 0;
        break;
    }
    es->psz_language = LanguageGetName( fmt->psz_language ); /* remember so we only need to do it once */
    es->psz_language_code = LanguageGetCode( fmt->psz_language );
    es->p_dec = NULL;

    if( es->p_pgrm == p_sys->p_pgrm )
        EsOutESVarUpdate( out, es, VLC_FALSE );

    /* Select it if needed */
    EsOutSelect( out, es, VLC_FALSE );


    TAB_APPEND( out->p_sys->i_es, out->p_sys->es, es );
    p_sys->i_id++;  /* always incremented */
    switch( fmt->i_cat )
    {
        case AUDIO_ES:
            p_sys->i_audio++;
            break;
        case SPU_ES:
            p_sys->i_sub++;
            break;
        case VIDEO_ES:
            p_sys->i_video++;
            break;
    }

    EsOutAddInfo( out, es );

    return es;
}

static void EsSelect( es_out_t *out, es_out_id_t *es )
{
    es_out_sys_t   *p_sys = out->p_sys;
    input_thread_t *p_input = p_sys->p_input;
    vlc_value_t    val;
    char           *psz_var;

    if( es->p_dec )
    {
        msg_Warn( p_input, "ES 0x%x is already selected", es->i_id );
        return;
    }

    if( es->fmt.i_cat == VIDEO_ES || es->fmt.i_cat == SPU_ES )
    {
        if( !var_GetBool( p_input, "video" ) ||
            ( p_input->p_sout && !var_GetBool( p_input, "sout-video" ) ) )
        {
            msg_Dbg( p_input, "video is disabled, not selecting ES 0x%x",
                     es->i_id );
            return;
        }
    }
    else if( es->fmt.i_cat == AUDIO_ES )
    {
        var_Get( p_input, "audio", &val );
        if( !var_GetBool( p_input, "audio" ) ||
            ( p_input->p_sout && !var_GetBool( p_input, "sout-audio" ) ) )
        {
            msg_Dbg( p_input, "audio is disabled, not selecting ES 0x%x",
                     es->i_id );
            return;
        }
    }
    if( es->fmt.i_cat == SPU_ES )
    {
        var_Get( p_input, "spu", &val );
        if( !var_GetBool( p_input, "spu" ) ||
            ( p_input->p_sout && !var_GetBool( p_input, "sout-spu" ) ) )
        {
            msg_Dbg( p_input, "spu is disabled, not selecting ES 0x%x",
                     es->i_id );
            return;
        }
    }

    es->i_preroll_end = -1;
    es->p_dec = input_DecoderNew( p_input, &es->fmt, VLC_FALSE );
    if( es->p_dec == NULL || es->p_pgrm != p_sys->p_pgrm )
        return;

    if( es->fmt.i_cat == VIDEO_ES )
        psz_var = "video-es";
    else if( es->fmt.i_cat == AUDIO_ES )
        psz_var = "audio-es";
    else if( es->fmt.i_cat == SPU_ES )
        psz_var = "spu-es";
    else
        return;

    /* Mark it as selected */
    val.i_int = es->i_id;
    var_Change( p_input, psz_var, VLC_VAR_SETVALUE, &val, NULL );


    var_SetBool( p_sys->p_input, "intf-change", VLC_TRUE );
}

static void EsUnselect( es_out_t *out, es_out_id_t *es, vlc_bool_t b_update )
{
    es_out_sys_t   *p_sys = out->p_sys;
    input_thread_t *p_input = p_sys->p_input;
    vlc_value_t    val;
    char           *psz_var;

    if( es->p_dec == NULL )
    {
        msg_Warn( p_input, "ES 0x%x is already unselected", es->i_id );
        return;
    }

    input_DecoderDelete( es->p_dec );
    es->p_dec = NULL;