cmdutils.c

    return 0;
}

static void null_end_frame(AVFilterLink *inlink) { }

static int ffsink_query_formats(AVFilterContext *ctx)
{
    FFSinkContext *priv = ctx->priv;
    enum PixelFormat pix_fmts[] = { priv->pix_fmt, PIX_FMT_NONE };

    avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
    return 0;
}

AVFilter ffsink = {
    .name      = "ffsink",
    .priv_size = sizeof(FFSinkContext),
    .init      = ffsink_init,

    .query_formats = ffsink_query_formats,

    .inputs    = (AVFilterPad[]) {{ .name          = "default",
                                    .type          = AVMEDIA_TYPE_VIDEO,
                                    .end_frame     = null_end_frame,
                                    .min_perms     = AV_PERM_READ, },
                                  { .name = NULL }},
    .outputs   = (AVFilterPad[]) {{ .name = NULL }},
};

int get_filtered_video_frame(AVFilterContext *ctx, AVFrame *frame,
                             AVFilterBufferRef **picref_ptr, AVRational *tb)
{
    int ret;
    AVFilterBufferRef *picref;

    if ((ret = avfilter_request_frame(ctx->inputs[0])) < 0)
        return ret;
    if (!(picref = ctx->inputs[0]->cur_buf))
        return AVERROR(ENOENT);
    *picref_ptr = picref;
    ctx->inputs[0]->cur_buf = NULL;
    *tb = ctx->inputs[0]->time_base;

    memcpy(frame->data,     picref->data,     sizeof(frame->data));
    memcpy(frame->linesize, picref->linesize, sizeof(frame->linesize));
    frame->interlaced_frame = picref->video->interlaced;
    frame->top_field_first  = picref->video->top_field_first;
    frame->key_frame        = picref->video->key_frame;
    frame->pict_type        = picref->video->pict_type;
    frame->sample_aspect_ratio = picref->video->pixel_aspect;

    return 1;
}

#endif /* CONFIG_AVFILTER */

void *grow_array(void *array, int elem_size, int *size, int new_size)
{
    if (new_size >= INT_MAX / elem_size) {
        av_log(NULL, AV_LOG_ERROR, "Array too big.\n");
        exit_program(1);
    }
    if (*size < new_size) {
        uint8_t *tmp = av_realloc(array, new_size*elem_size);
        if (!tmp) {
            av_log(NULL, AV_LOG_ERROR, "Could not alloc buffer.\n");
            exit_program(1);
        }
        memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
        *size = new_size;
        return tmp;
    }
    return array;
}