static int filter_count = 0;
static AVFilter **filters = NULL;
-/* TODO: buffer pool. see comment for avfilter_default_get_video_buffer() */
-void avfilter_default_free_video_buffer(AVFilterPic *pic)
-{
- avpicture_free((AVPicture *) pic);
- av_free(pic);
-}
-
-/* TODO: set the buffer's priv member to a context structure for the whole
- * filter chain. This will allow for a buffer pool instead of the constant
- * alloc & free cycle currently implemented. */
-AVFilterPicRef *avfilter_default_get_video_buffer(AVFilterLink *link, int perms)
-{
- AVFilterPic *pic = av_mallocz(sizeof(AVFilterPic));
- AVFilterPicRef *ref = av_mallocz(sizeof(AVFilterPicRef));
-
- ref->pic = pic;
- ref->w = link->w;
- ref->h = link->h;
- ref->perms = perms;
-
- pic->refcount = 1;
- pic->format = link->format;
- pic->free = avfilter_default_free_video_buffer;
- avpicture_alloc((AVPicture *)pic, pic->format, ref->w, ref->h);
-
- memcpy(ref->data, pic->data, sizeof(pic->data));
- memcpy(ref->linesize, pic->linesize, sizeof(pic->linesize));
-
- return ref;
-}
-
-void avfilter_default_start_frame(AVFilterLink *link, AVFilterPicRef *picref)
-{
- AVFilterLink *out = NULL;
-
- if(link->dst->output_count)
- out = link->dst->outputs[0];
-
- link->cur_pic = picref;
-
- if(out) {
- out->outpic = avfilter_get_video_buffer(out, AV_PERM_WRITE);
- out->outpic->pts = picref->pts;
- avfilter_start_frame(out, avfilter_ref_pic(out->outpic, ~0));
- }
-}
-
-void avfilter_default_end_frame(AVFilterLink *link)
-{
- AVFilterLink *out = NULL;
-
- if(link->dst->output_count)
- out = link->dst->outputs[0];
-
- avfilter_unref_pic(link->cur_pic);
- link->cur_pic = NULL;
-
- if(out) {
- avfilter_unref_pic(out->outpic);
- out->outpic = NULL;
- avfilter_end_frame(out);
- }
-}
-
AVFilterPicRef *avfilter_ref_pic(AVFilterPicRef *ref, int pmask)
{
AVFilterPicRef *ret = av_malloc(sizeof(AVFilterPicRef));
av_free(ref);
}
-/**
- * default config_link() implementation for output video links to simplify
- * the implementation of one input one output video filters */
-static int default_config_output_link(AVFilterLink *link)
-{
- if(link->src->input_count && link->src->inputs[0]) {
- link->w = link->src->inputs[0]->w;
- link->h = link->src->inputs[0]->h;
- } else {
- /* XXX: any non-simple filter which would cause this branch to be taken
- * really should implement its own config_props() for this link. */
- link->w =
- link->h = 0;
- }
-
- return 0;
-}
-
-/**
- * default query_formats() implementation for output video links to simplify
- * the implementation of one input one output video filters */
-static int *default_query_output_formats(AVFilterLink *link)
-{
- if(link->src->input_count && link->src->inputs[0])
- return avfilter_make_format_list(1, link->src->inputs[0]->format);
- else
- /* XXX: any non-simple filter which would cause this branch to be taken
- * really should implement its own query_formats() for this link */
- return avfilter_make_format_list(0);
-}
-
int avfilter_link(AVFilterContext *src, unsigned srcpad,
AVFilterContext *dst, unsigned dstpad)
{
if(src->output_pads[srcpad].query_formats)
fmts[0] = src->output_pads[srcpad].query_formats(link);
else
- fmts[0] = default_query_output_formats(link);
+ fmts[0] = avfilter_default_query_output_formats(link);
fmts[1] = dst->input_pads[dstpad].query_formats(link);
for(i = 0; fmts[0][i] != -1; i ++)
for(j = 0; fmts[1][j] != -1; j ++)
if (src->output_pads[srcpad].config_props)
src->output_pads[srcpad].config_props(link);
else
- default_config_output_link(link);
+ avfilter_default_config_output_link(link);
if (dst->input_pads[dstpad].config_props)
dst->input_pads[dstpad].config_props(link);