libasf.c

VLC Player Source Code

        {
            if( !ASF_HAVE(1) )
                break;
            p_ll->ppsz_language[i] = ASF_READS( ASF_READ1() );
        }
        p_ll->i_language = i;
    }

#ifdef ASF_DEBUG
    msg_Dbg( s, "read \"language list object\" %d entries",
             p_ll->i_language );
    for( i = 0; i < p_ll->i_language; i++ )
        msg_Dbg( s, "  - '%s'",
                 p_ll->ppsz_language[i] );
#endif
    return VLC_SUCCESS;
}

static void ASF_FreeObject_language_list( asf_object_t *p_obj)
{
    asf_object_language_list_t *p_ll = &p_obj->language_list;
    int i;

    for( i = 0; i < p_ll->i_language; i++ )
        FREENULL( p_ll->ppsz_language[i] );
    FREENULL( p_ll->ppsz_language );
}

/* Stream bitrate properties */
static int ASF_ReadObject_stream_bitrate_properties( stream_t *s,
                                                     asf_object_t *p_obj)
{
    asf_object_stream_bitrate_properties_t *p_sb = &p_obj->stream_bitrate;
    const uint8_t *p_peek, *p_data;
    int i_peek;
    int i;

    if( ( i_peek = stream_Peek( s, &p_peek, p_sb->i_object_size ) ) < 26 )
       return VLC_EGENERIC;

    p_data = &p_peek[24];

    p_sb->i_bitrate = ASF_READ2();
    if( p_sb->i_bitrate > 127 )
        p_sb->i_bitrate = 127;  /* Buggy ? */
    for( i = 0; i < p_sb->i_bitrate; i++ )
    {
        if( !ASF_HAVE(2 + 4) )
            break;
        p_sb->bitrate[i].i_stream_number = ASF_READ2()& 0x7f;
        p_sb->bitrate[i].i_avg_bitrate = ASF_READ4();
    }
    p_sb->i_bitrate = i;

#ifdef ASF_DEBUG
    msg_Dbg( s,"read \"stream bitrate properties object\"" );
    for( i = 0; i < p_sb->i_bitrate; i++ )
    {
        msg_Dbg( s,"  - stream=%d bitrate=%d",
                 p_sb->bitrate[i].i_stream_number,
                 p_sb->bitrate[i].i_avg_bitrate );
    }
#endif
    return VLC_SUCCESS;
}
static void ASF_FreeObject_stream_bitrate_properties( asf_object_t *p_obj)
{
    VLC_UNUSED(p_obj);
}

static int ASF_ReadObject_extended_stream_properties( stream_t *s,
                                                      asf_object_t *p_obj)
{
    asf_object_extended_stream_properties_t *p_esp = &p_obj->ext_stream;
    const uint8_t *p_peek, *p_data;
    int i_peek, i;

    if( ( i_peek = stream_Peek( s, &p_peek, p_esp->i_object_size ) ) < 88 )
       return VLC_EGENERIC;

    p_data = &p_peek[24];

    p_esp->i_start_time = GetQWLE( &p_data[0] );
    p_esp->i_end_time = GetQWLE( &p_data[8] );
    p_esp->i_data_bitrate = GetDWLE( &p_data[16] );
    p_esp->i_buffer_size = GetDWLE( &p_data[20] );
    p_esp->i_initial_buffer_fullness = GetDWLE( &p_data[24] );
    p_esp->i_alternate_data_bitrate = GetDWLE( &p_data[28] );
    p_esp->i_alternate_buffer_size = GetDWLE( &p_data[32] );
    p_esp->i_alternate_initial_buffer_fullness = GetDWLE( &p_data[36] );
    p_esp->i_maximum_object_size = GetDWLE( &p_data[40] );
    p_esp->i_flags = GetDWLE( &p_data[44] );
    p_esp->i_stream_number = GetWLE( &p_data[48] );
    p_esp->i_language_index = GetWLE( &p_data[50] );
    p_esp->i_average_time_per_frame= GetQWLE( &p_data[52] );
    p_esp->i_stream_name_count = GetWLE( &p_data[60] );
    p_esp->i_payload_extension_system_count = GetWLE( &p_data[62] );

    p_data += 64;

    p_esp->pi_stream_name_language = calloc( p_esp->i_stream_name_count,
                                             sizeof(int) );
    p_esp->ppsz_stream_name = calloc( p_esp->i_stream_name_count,
                                      sizeof(char*) );
    if( !p_esp->pi_stream_name_language ||
        !p_esp->ppsz_stream_name )
    {
        free( p_esp->pi_stream_name_language );
        free( p_esp->ppsz_stream_name );
        return VLC_ENOMEM;
    }
    for( i = 0; i < p_esp->i_stream_name_count; i++ )
    {
        if( !ASF_HAVE( 2+2 ) )
            break;
        p_esp->pi_stream_name_language[i] = ASF_READ2();
        p_esp->ppsz_stream_name[i] = ASF_READS( ASF_READ2() );
    }
    p_esp->i_stream_name_count = i;

    for( i = 0; i < p_esp->i_payload_extension_system_count; i++ )
    {
        ASF_SKIP( 16 );   // GUID
        ASF_SKIP( 2 );
        ASF_SKIP( ASF_READ4() );
    }

    p_esp->p_sp = NULL;
    if( p_data < &p_peek[i_peek] )
    {
        asf_object_t *p_sp;
        /* Cannot fail as peek succeed */
        stream_Read( s, NULL, p_data - p_peek );
 
        p_sp = malloc( sizeof( asf_object_t ) );

        if( !p_sp || ASF_ReadObject( s, p_sp, NULL ) )
        {
            free( p_sp );
        }
        else
        {
            /* This p_sp will be inserted by ReadRoot later */
            p_esp->p_sp = (asf_object_stream_properties_t*)p_sp;
        }
    }

#ifdef ASF_DEBUG
    msg_Dbg( s, "read \"extended stream properties object\":" );
    msg_Dbg( s, "  - start=%"PRId64" end=%"PRId64,
             p_esp->i_start_time, p_esp->i_end_time );
    msg_Dbg( s, "  - data bitrate=%d buffer=%d initial fullness=%d",
             p_esp->i_data_bitrate,
             p_esp->i_buffer_size,
             p_esp->i_initial_buffer_fullness );
    msg_Dbg( s, "  - alternate data bitrate=%d buffer=%d initial fullness=%d",
             p_esp->i_alternate_data_bitrate,
             p_esp->i_alternate_buffer_size,
             p_esp->i_alternate_initial_buffer_fullness );
    msg_Dbg( s, "  - maximum object size=%d", p_esp->i_maximum_object_size );
    msg_Dbg( s, "  - flags=0x%x", p_esp->i_flags );
    msg_Dbg( s, "  - stream number=%d language=%d",
             p_esp->i_stream_number, p_esp->i_language_index );
    msg_Dbg( s, "  - average time per frame=%"PRId64,
             p_esp->i_average_time_per_frame );
    msg_Dbg( s, "  - stream name count=%d", p_esp->i_stream_name_count );
    for( i = 0; i < p_esp->i_stream_name_count; i++ )
        msg_Dbg( s, "     - lang id=%d name=%s",
                 p_esp->pi_stream_name_language[i],
                 p_esp->ppsz_stream_name[i] );
    msg_Dbg( s, "  - payload extension system count=%d",
             p_esp->i_payload_extension_system_count );
#endif
    return VLC_SUCCESS;
}
static void ASF_FreeObject_extended_stream_properties( asf_object_t *p_obj)
{
    asf_object_extended_stream_properties_t *p_esp = &p_obj->ext_stream;
    int i;

    for( i = 0; i < p_esp->i_stream_name_count; i++ )
        FREENULL( p_esp->ppsz_stream_name[i] );
    FREENULL( p_esp->pi_stream_name_language );
    FREENULL( p_esp->ppsz_stream_name );
}


static int ASF_ReadObject_advanced_mutual_exclusion( stream_t *s,
                                                     asf_object_t *p_obj)
{
    asf_object_advanced_mutual_exclusion_t *p_ae = &p_obj->advanced_mutual_exclusion;
    const uint8_t *p_peek, *p_data;
    int i_peek;
    int i;

    if( ( i_peek = stream_Peek( s, &p_peek, p_ae->i_object_size ) ) < 42 )
       return VLC_EGENERIC;

    p_data = &p_peek[24];

    ASF_GetGUID( &p_ae->type, &p_data[0] );
    ASF_SKIP( 16 );
    p_ae->i_stream_number_count = ASF_READ2();
    p_ae->pi_stream_number = calloc( p_ae->i_stream_number_count, sizeof(int) );

    for( i = 0; i < p_ae->i_stream_number_count; i++ )
    {
        if( !ASF_HAVE(2) )
            break;
        p_ae->pi_stream_number[i] = ASF_READ2();
    }
    p_ae->i_stream_number_count = i;
 
#ifdef ASF_DEBUG
    msg_Dbg( s, "read \"advanced mutual exclusion object\"" );
    for( i = 0; i < p_ae->i_stream_number_count; i++ )
        msg_Dbg( s, "  - stream=%d", p_ae->pi_stream_number[i] );
#endif
    return VLC_SUCCESS;
}
static void ASF_FreeObject_advanced_mutual_exclusion( asf_object_t *p_obj)
{
    asf_object_advanced_mutual_exclusion_t *p_ae = &p_obj->advanced_mutual_exclusion;

    FREENULL( p_ae->pi_stream_number );
}


static int ASF_ReadObject_stream_prioritization( stream_t *s,
                                                 asf_object_t *p_obj)
{
    asf_object_stream_prioritization_t *p_sp = &p_obj->stream_prioritization;
    const uint8_t *p_peek, *p_data;
    int i_peek;
    int i;

    if( ( i_peek = stream_Peek( s, &p_peek, p_sp->i_object_size ) ) < 26 )
       return VLC_EGENERIC;

    p_data = &p_peek[24];

    p_sp->i_priority_count = ASF_READ2();

    p_sp->pi_priority_flag = calloc( p_sp->i_priority_count, sizeof(int) );
    p_sp->pi_priority_stream_number =
                             calloc( p_sp->i_priority_count, sizeof(int) );

    if( !p_sp->pi_priority_flag || !p_sp->pi_priority_stream_number )
    {
        free( p_sp->pi_priority_flag );
        free( p_sp->pi_priority_stream_number );
        return VLC_ENOMEM;
    }

    for( i = 0; i < p_sp->i_priority_count; i++ )
    {
        if( !ASF_HAVE(2+2) )
            break;
        p_sp->pi_priority_stream_number[i] = ASF_READ2();
        p_sp->pi_priority_flag[i] = ASF_READ2();
    }
    p_sp->i_priority_count = i;

#ifdef ASF_DEBUG
    msg_Dbg( s, "read \"stream prioritization object\"" );
    for( i = 0; i < p_sp->i_priority_count; i++ )
        msg_Dbg( s, "  - Stream:%d flags=0x%x",
                 p_sp->pi_priority_stream_number[i],
                 p_sp->pi_priority_flag[i] );
#endif
    return VLC_SUCCESS;
}
static void ASF_FreeObject_stream_prioritization( asf_object_t *p_obj)
{
    asf_object_stream_prioritization_t *p_sp = &p_obj->stream_prioritization;

    FREENULL( p_sp->pi_priority_stream_number );
    FREENULL( p_sp->pi_priority_flag );
}


static int ASF_ReadObject_extended_content_description( stream_t *s,
                                                        asf_object_t *p_obj)
{
    asf_object_extended_content_description_t *p_ec =
                                        &p_obj->extended_content_description;
    const uint8_t *p_peek, *p_data;
    int i_peek;
    int i;

    if( ( i_peek = stream_Peek( s, &p_peek, p_ec->i_object_size ) ) < 26 )
       return VLC_EGENERIC;

    p_data = &p_peek[24];

    p_ec->i_count = ASF_READ2();
    p_ec->ppsz_name  = calloc( p_ec->i_count, sizeof(char*) );
    p_ec->ppsz_value = calloc( p_ec->i_count, sizeof(char*) );
    if( !p_ec->ppsz_name || !p_ec->ppsz_value )
    {
        free( p_ec->ppsz_name );
        free( p_ec->ppsz_value );
        return VLC_ENOMEM;
    }
    for( i = 0; i < p_ec->i_count; i++ )
    {
        int i_size;
        int i_type;

        if( !ASF_HAVE(2 + 2+2) )
            break;

        p_ec->ppsz_name[i] = ASF_READS( ASF_READ2() );

        /* Grrr */
        i_type = ASF_READ2();
        i_size = ASF_READ2();

        if( i_type == 0 )
        {
            p_ec->ppsz_value[i] = ASF_READS( i_size );
        }
        else if( i_type == 1 )
        {
            /* Byte array */
            static const char hex[16] = "0123456789ABCDEF";
            int j;

            p_ec->ppsz_value[i] = malloc( 2*i_size + 1 );
            if( p_ec->ppsz_value[i] )
            {
                char *psz_value = p_ec->ppsz_value[i];
                for( j = 0; j < i_size; j++ )
                {
                    const uint8_t v = ASF_READ1();
                    psz_value[2*j+0] = hex[v>>4];
                    psz_value[2*j+1] = hex[v&0xf];
                }
                psz_value[2*i_size] = '\0';
            }
        }
        else if( i_type == 2 )
        {
            /* Bool */
            p_ec->ppsz_value[i] = strdup( ASF_READ1() ? "true" : "false" );
            ASF_SKIP(i_size-1);
        }
        else if( i_type == 3 )
        {
            /* DWord */
            if( asprintf( &p_ec->ppsz_value[i], "%d", ASF_READ4() ) == -1 )
                p_ec->ppsz_value[i] = NULL;
        }
        else if( i_type == 4 )
        {
            /* QWord */
            if( asprintf( &p_ec->ppsz_value[i], "%"PRId64, ASF_READ8() ) == -1 )
                p_ec->ppsz_value[i] = NULL;
        }
        else if( i_type == 5 )
        {
            /* Word */
            if( asprintf( &p_ec->ppsz_value[i], "%d", ASF_READ2() ) == -1 )
                p_ec->ppsz_value[i] = NULL;
        }
        else
        {
            p_ec->ppsz_value[i] = NULL;
            ASF_SKIP(i_size);
        }
    }
    p_ec->i_count = i;

#ifdef ASF_DEBUG
    msg_Dbg( s, "read \"extended content description object\"" );
    for( i = 0; i < p_ec->i_count; i++ )
        msg_Dbg( s, "  - '%s' = '%s'",
                 p_ec->ppsz_name[i],
                 p_ec->ppsz_value[i] );
#endif
    return VLC_SUCCESS;
}
static void ASF_FreeObject_extended_content_description( asf_object_t *p_obj)
{
    asf_object_extended_content_description_t *p_ec =
                                        &p_obj->extended_content_description;
    int i;

    for( i = 0; i < p_ec->i_count; i++ )
    {
        FREENULL( p_ec->ppsz_name[i] );
        FREENULL( p_ec->ppsz_value[i] );
    }
    FREENULL( p_ec->ppsz_name );
    FREENULL( p_ec->ppsz_value );
}


#if 0
static int ASF_ReadObject_XXX(stream_t *s, asf_object_t *p_obj)
{
    asf_object_XXX_t *p_XX =
        (asf_object_XXX_t *)p_obj;
    const uint8_t *p_peek;
    uint8_t *p_data;
    int i_peek;

    if( ( i_peek = stream_Peek( s, &p_peek, p_XX->i_object_size ) ) < XXX )
       return VLC_EGENERIC;

    p_data = &p_peek[24];

#ifdef ASF_DEBUG
    msg_Dbg( s,
             "Read \"XXX object\"" );
#endif
    return VLC_SUCCESS;
}
static void ASF_FreeObject_XXX( asf_object_t *p_obj)
{
    asf_object_XXX_t *p_XX =