static int dvbsub_display_end_segment(AVCodecContext *avctx, const uint8_t *buf,
                                      int buf_size, AVSubtitle *sub)
{
    DVBSubContext *ctx = avctx->priv_data;
    DVBSubDisplayDefinition *display_def = ctx->display_definition;
    DVBSubRegion *region;
    DVBSubRegionDisplay *display;
    AVSubtitleRect *rect;
    DVBSubCLUT *clut;
    uint32_t *clut_table;
    int i;
    int offset_x=0, offset_y=0;
    sub->rects = NULL;
    sub->start_display_time = 0;
    sub->end_display_time = ctx->time_out * 1000;
    sub->format = 0;
    if (display_def) {
        offset_x = display_def->x;
        offset_y = display_def->y;
    }
    sub->num_rects = ctx->display_list_size;
    if (sub->num_rects > 0) {
        sub->rects = av_mallocz(sizeof(*sub->rects) * sub->num_rects);
        if (!sub->rects)
            return AVERROR(ENOMEM);
        for (i = 0; i < sub->num_rects; i++) {
            sub->rects[i] = av_mallocz(sizeof(*sub->rects[i]));
            if (!sub->rects[i]) {
                int j;
                for (j = 0; j < i; j ++)
                    av_free(sub->rects[j]);
                av_free(sub->rects);
                return AVERROR(ENOMEM);
            }
        }
    }
    i = 0;
    for (display = ctx->display_list; display; display = display->next) {
        region = get_region(ctx, display->region_id);
        rect = sub->rects[i];
        if (!region)
            continue;
        rect->x = display->x_pos + offset_x;
        rect->y = display->y_pos + offset_y;
        rect->w = region->width;
        rect->h = region->height;
        rect->nb_colors = 16;
        rect->type      = SUBTITLE_BITMAP;
        rect->linesize[0] = region->width;
        clut = get_clut(ctx, region->clut);
        if (!clut)
            clut = &default_clut;
        switch (region->depth) {
        case 2:
            clut_table = clut->clut4;
            break;
        case 8:
            clut_table = clut->clut256;
            break;
        case 4:
        default:
            clut_table = clut->clut16;
            break;
        }
        rect->data[1] = av_mallocz(AVPALETTE_SIZE);
        if (!rect->data[1]) {
            for (i = 0; i < sub->num_rects; i++)
                av_free(sub->rects[i]);
            av_free(sub->rects);
            return AVERROR(ENOMEM);
        }
        memcpy(rect->data[1], clut_table, (1 << region->depth) * sizeof(uint32_t));
        rect->data[0] = av_malloc(region->buf_size);
        if (!rect->data[0]) {
            av_free(rect->data[1]);
            for (i = 0; i < sub->num_rects; i++)
                av_free(sub->rects[i]);
            av_free(sub->rects);
            return AVERROR(ENOMEM);
        }
        memcpy(rect->data[0], region->pbuf, region->buf_size);
#if FF_API_AVPICTURE
FF_DISABLE_DEPRECATION_WARNINGS
{
        int j;
        for (j = 0; j < 4; j++) {
            rect->pict.data[j] = rect->data[j];
            rect->pict.linesize[j] = rect->linesize[j];
        }
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
        i++;
    }
    sub->num_rects = i;
#ifdef DEBUG
    save_display_set(ctx);
#endif
    return 1;
}
['static int dvbsub_display_end_segment(AVCodecContext *avctx, const uint8_t *buf,\n                                      int buf_size, AVSubtitle *sub)\n{\n    DVBSubContext *ctx = avctx->priv_data;\n    DVBSubDisplayDefinition *display_def = ctx->display_definition;\n    DVBSubRegion *region;\n    DVBSubRegionDisplay *display;\n    AVSubtitleRect *rect;\n    DVBSubCLUT *clut;\n    uint32_t *clut_table;\n    int i;\n    int offset_x=0, offset_y=0;\n    sub->rects = NULL;\n    sub->start_display_time = 0;\n    sub->end_display_time = ctx->time_out * 1000;\n    sub->format = 0;\n    if (display_def) {\n        offset_x = display_def->x;\n        offset_y = display_def->y;\n    }\n    sub->num_rects = ctx->display_list_size;\n    if (sub->num_rects > 0) {\n        sub->rects = av_mallocz(sizeof(*sub->rects) * sub->num_rects);\n        if (!sub->rects)\n            return AVERROR(ENOMEM);\n        for (i = 0; i < sub->num_rects; i++) {\n            sub->rects[i] = av_mallocz(sizeof(*sub->rects[i]));\n            if (!sub->rects[i]) {\n                int j;\n                for (j = 0; j < i; j ++)\n                    av_free(sub->rects[j]);\n                av_free(sub->rects);\n                return AVERROR(ENOMEM);\n            }\n        }\n    }\n    i = 0;\n    for (display = ctx->display_list; display; display = display->next) {\n        region = get_region(ctx, display->region_id);\n        rect = sub->rects[i];\n        if (!region)\n            continue;\n        rect->x = display->x_pos + offset_x;\n        rect->y = display->y_pos + offset_y;\n        rect->w = region->width;\n        rect->h = region->height;\n        rect->nb_colors = 16;\n        rect->type      = SUBTITLE_BITMAP;\n        rect->linesize[0] = region->width;\n        clut = get_clut(ctx, region->clut);\n        if (!clut)\n            clut = &default_clut;\n        switch (region->depth) {\n        case 2:\n            clut_table = clut->clut4;\n            break;\n        case 8:\n            clut_table = clut->clut256;\n            break;\n        case 4:\n        default:\n            clut_table = clut->clut16;\n            break;\n        }\n        rect->data[1] = av_mallocz(AVPALETTE_SIZE);\n        if (!rect->data[1]) {\n            for (i = 0; i < sub->num_rects; i++)\n                av_free(sub->rects[i]);\n            av_free(sub->rects);\n            return AVERROR(ENOMEM);\n        }\n        memcpy(rect->data[1], clut_table, (1 << region->depth) * sizeof(uint32_t));\n        rect->data[0] = av_malloc(region->buf_size);\n        if (!rect->data[0]) {\n            av_free(rect->data[1]);\n            for (i = 0; i < sub->num_rects; i++)\n                av_free(sub->rects[i]);\n            av_free(sub->rects);\n            return AVERROR(ENOMEM);\n        }\n        memcpy(rect->data[0], region->pbuf, region->buf_size);\n#if FF_API_AVPICTURE\nFF_DISABLE_DEPRECATION_WARNINGS\n{\n        int j;\n        for (j = 0; j < 4; j++) {\n            rect->pict.data[j] = rect->data[j];\n            rect->pict.linesize[j] = rect->linesize[j];\n        }\n}\nFF_ENABLE_DEPRECATION_WARNINGS\n#endif\n        i++;\n    }\n    sub->num_rects = i;\n#ifdef DEBUG\n    save_display_set(ctx);\n#endif\n    return 1;\n}', 'static DVBSubRegion* get_region(DVBSubContext *ctx, int region_id)\n{\n    DVBSubRegion *ptr = ctx->region_list;\n    while (ptr && ptr->id != region_id) {\n        ptr = ptr->next;\n    }\n    return ptr;\n}']