#include "avfilter.h"
#include "allfilters.h"
-/** list of registered filters, sorted by name */
-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)
+/** list of registered filters */
+struct FilterList
{
- 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;
+ AVFilter *filter;
+ struct FilterList *next;
+} *filters = NULL;
- pic->refcount = 1;
- pic->format = link->format;
- pic->free = avfilter_default_free_video_buffer;
- avpicture_alloc((AVPicture *)pic, pic->format, ref->w, ref->h);
+/** helper macros to get the in/out pad on the dst/src filter */
+#define link_dpad(link) link->dst-> input_pads[link->dstpad]
+#define link_spad(link) link->src->output_pads[link->srcpad]
- 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)
-{
- link->cur_pic = picref;
-}
-
-void avfilter_default_end_frame(AVFilterLink *link)
-{
- avfilter_unref_pic(link->cur_pic);
- link->cur_pic = NULL;
-}
-
-AVFilterPicRef *avfilter_ref_pic(AVFilterPicRef *ref)
+AVFilterPicRef *avfilter_ref_pic(AVFilterPicRef *ref, int pmask)
{
AVFilterPicRef *ret = av_malloc(sizeof(AVFilterPicRef));
- memcpy(ret, ref, sizeof(AVFilterPicRef));
+ *ret = *ref;
+ ret->perms &= pmask;
ret->pic->refcount ++;
return ret;
}
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)
+void avfilter_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
+ AVFilterPad **pads, AVFilterLink ***links,
+ AVFilterPad *newpad)
{
- link->w = link->src->inputs[0]->w;
- link->h = link->src->inputs[0]->h;
+ unsigned i;
- return 0;
-}
+ idx = FFMIN(idx, *count);
-/**
- * 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)
-{
- return avfilter_make_format_list(1, link->src->inputs[0]->format);
+ *pads = av_realloc(*pads, sizeof(AVFilterPad) * (*count + 1));
+ *links = av_realloc(*links, sizeof(AVFilterLink*) * (*count + 1));
+ memmove(*pads +idx+1, *pads +idx, sizeof(AVFilterPad) * (*count-idx));
+ memmove(*links+idx+1, *links+idx, sizeof(AVFilterLink*) * (*count-idx));
+ memcpy(*pads+idx, newpad, sizeof(AVFilterPad));
+ (*links)[idx] = NULL;
+
+ (*count) ++;
+ for(i = idx+1; i < *count; i ++)
+ if(*links[i])
+ (*(unsigned *)((uint8_t *)(*links[i]) + padidx_off)) ++;
}
int avfilter_link(AVFilterContext *src, unsigned srcpad,
AVFilterContext *dst, unsigned dstpad)
{
AVFilterLink *link;
- int *fmts[2], i, j;
- if(src->outputs[srcpad] || dst->inputs[dstpad])
+ if(src->output_count <= srcpad || dst->input_count <= dstpad ||
+ src->outputs[srcpad] || dst->inputs[dstpad])
return -1;
src->outputs[srcpad] =
- dst->inputs[dstpad] = link = av_malloc(sizeof(AVFilterLink));
+ dst->inputs[dstpad] = link = av_mallocz(sizeof(AVFilterLink));
- link->src = src;
- link->dst = dst;
- link->srcpad = srcpad;
- link->dstpad = dstpad;
- link->cur_pic = NULL;
+ link->src = src;
+ link->dst = dst;
+ link->srcpad = srcpad;
+ link->dstpad = dstpad;
+ link->format = -1;
- /* find a format both filters support - TODO: auto-insert conversion filter */
- if(src->filter->outputs[srcpad].query_formats)
- fmts[0] = src->filter->outputs[srcpad].query_formats(link);
- else
- fmts[0] = default_query_output_formats(link);
- fmts[1] = dst->filter-> inputs[dstpad].query_formats(link);
- for(i = 0; fmts[0][i] != -1; i ++)
- for(j = 0; fmts[1][j] != -1; j ++)
- if(fmts[0][i] == fmts[1][j]) {
- link->format = fmts[0][i];
- goto format_done;
- }
+ return 0;
+}
+
+int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
+ unsigned in, unsigned out)
+{
+ AVFilterFormats *formats;
-format_done:
- av_free(fmts[0]);
- av_free(fmts[1]);
- if(link->format == -1) {
- /* failed to find a format. fail at creating the link */
- av_free(link);
- src->outputs[srcpad] = NULL;
- dst->inputs[dstpad] = NULL;
+ av_log(NULL, AV_LOG_INFO, "auto-inserting filter '%s'\n",
+ filt->filter->name);
+
+ link->dst->inputs[link->dstpad] = NULL;
+ if(avfilter_link(filt, out, link->dst, link->dstpad)) {
+ /* failed to link output filter to new filter */
+ link->dst->inputs[link->dstpad] = link;
return -1;
}
- if (src->filter->outputs[srcpad].config_props)
- src->filter->outputs[srcpad].config_props(link);
- else
- default_config_output_link(link);
+ /* re-hookup the link to the new destination filter we inserted */
+ link->dst = filt;
+ link->dstpad = in;
+ filt->inputs[in] = link;
+
+ /* if any information on supported colorspaces already exists on the
+ * link, we need to preserve that */
+ if((formats = link->out_formats))
+ avfilter_formats_changeref(&link->out_formats,
+ &filt->outputs[out]->out_formats);
+
+ return 0;
+}
+
+int avfilter_config_links(AVFilterContext *filter)
+{
+ int (*config_link)(AVFilterLink *);
+ unsigned i;
+
+ for(i = 0; i < filter->input_count; i ++) {
+ AVFilterLink *link;
+
+ if(!(link = filter->inputs[i])) continue;
+
+ switch(link->init_state) {
+ case AVLINK_INIT:
+ continue;
+ case AVLINK_STARTINIT:
+ av_log(filter, AV_LOG_ERROR, "circular filter chain detected\n");
+ return -1;
+ case AVLINK_UNINIT:
+ link->init_state = AVLINK_STARTINIT;
+
+ if(avfilter_config_links(link->src))
+ return -1;
+
+ if(!(config_link = link_spad(link).config_props))
+ config_link = avfilter_default_config_output_link;
+ if(config_link(link))
+ return -1;
- if (dst->filter->inputs[dstpad].config_props)
- dst->filter->inputs[dstpad].config_props(link);
+ if((config_link = link_dpad(link).config_props))
+ if(config_link(link))
+ return -1;
+
+ link->init_state = AVLINK_INIT;
+ }
+ }
return 0;
}
{
AVFilterPicRef *ret = NULL;
- if(link->dst->filter->inputs[link->dstpad].get_video_buffer)
- ret = link->dst->filter->inputs[link->dstpad].get_video_buffer(link, perms);
+ if(link_dpad(link).get_video_buffer)
+ ret = link_dpad(link).get_video_buffer(link, perms);
if(!ret)
ret = avfilter_default_get_video_buffer(link, perms);
return ret;
}
-void avfilter_request_frame(AVFilterLink *link)
+int avfilter_request_frame(AVFilterLink *link)
+{
+ if(link_spad(link).request_frame)
+ return link_spad(link).request_frame(link);
+ else if(link->src->inputs[0])
+ return avfilter_request_frame(link->src->inputs[0]);
+ else return -1;
+}
+
+int avfilter_poll_frame(AVFilterLink *link)
{
- link->src->filter->outputs[link->srcpad].request_frame(link);
+ int i, min=INT_MAX;
+
+ if(link_spad(link).poll_frame)
+ return link_spad(link).poll_frame(link);
+ else
+ for (i=0; i<link->src->input_count; i++) {
+ if(!link->src->inputs[i])
+ return -1;
+ min = FFMIN(min, avfilter_poll_frame(link->src->inputs[i]));
+ }
+
+ return min;
}
/* XXX: should we do the duplicating of the picture ref here, instead of
{
void (*start_frame)(AVFilterLink *, AVFilterPicRef *);
- start_frame = link->dst->filter->inputs[link->dstpad].start_frame;
- if(!start_frame)
+ if(!(start_frame = link_dpad(link).start_frame))
start_frame = avfilter_default_start_frame;
- start_frame(link, picref);
+ /* prepare to copy the picture if it has insufficient permissions */
+ if((link_dpad(link).min_perms & picref->perms) != link_dpad(link).min_perms ||
+ link_dpad(link).rej_perms & picref->perms) {
+ /*
+ av_log(link->dst, AV_LOG_INFO,
+ "frame copy needed (have perms %x, need %x, reject %x)\n",
+ picref->perms,
+ link_dpad(link).min_perms, link_dpad(link).rej_perms);
+ */
+
+ link->cur_pic = avfilter_default_get_video_buffer(link, link_dpad(link).min_perms);
+ link->srcpic = picref;
+ }
+ else
+ link->cur_pic = picref;
+
+ start_frame(link, link->cur_pic);
}
void avfilter_end_frame(AVFilterLink *link)
{
void (*end_frame)(AVFilterLink *);
- end_frame = link->dst->filter->inputs[link->dstpad].end_frame;
- if(!end_frame)
+ if(!(end_frame = link_dpad(link).end_frame))
end_frame = avfilter_default_end_frame;
end_frame(link);
-}
-void avfilter_draw_slice(AVFilterLink *link, uint8_t *data[4], int y, int h)
-{
- link->dst->filter->inputs[link->dstpad].draw_slice(link, data, y, h);
+ /* unreference the source picture if we're feeding the destination filter
+ * a copied version dues to permission issues */
+ if(link->srcpic) {
+ avfilter_unref_pic(link->srcpic);
+ link->srcpic = NULL;
+ }
+
}
-static int filter_cmp(const void *aa, const void *bb)
+void avfilter_draw_slice(AVFilterLink *link, int y, int h)
{
- const AVFilter *a = *(const AVFilter **)aa, *b = *(const AVFilter **)bb;
- return strcmp(a->name, b->name);
+ uint8_t *src[4], *dst[4];
+ int i, j, hsub, vsub;
+
+ /* copy the slice if needed for permission reasons */
+ if(link->srcpic) {
+ avcodec_get_chroma_sub_sample(link->format, &hsub, &vsub);
+
+ link->cur_pic->pts = link->srcpic->pts;
+ src[0] = link->srcpic-> data[0] + y * link->srcpic-> linesize[0];
+ dst[0] = link->cur_pic->data[0] + y * link->cur_pic->linesize[0];
+ for(i = 1; i < 4; i ++) {
+ if(link->srcpic->data[i]) {
+ src[i] = link->srcpic-> data[i] + (y >> vsub) * link->srcpic-> linesize[i];
+ dst[i] = link->cur_pic->data[i] + (y >> vsub) * link->cur_pic->linesize[i];
+ } else
+ src[i] = dst[i] = NULL;
+ }
+ for(j = 0; j < h; j ++) {
+ memcpy(dst[0], src[0], link->cur_pic->linesize[0]);
+ src[0] += link->srcpic ->linesize[0];
+ dst[0] += link->cur_pic->linesize[0];
+ }
+ for(i = 1; i < 4; i ++) {
+ if(!src[i]) continue;
+
+ for(j = 0; j < h >> vsub; j ++) {
+ memcpy(dst[i], src[i], link->cur_pic->linesize[i]);
+ src[i] += link->srcpic ->linesize[i];
+ dst[i] += link->cur_pic->linesize[i];
+ }
+ }
+ }
+
+ if(!link_dpad(link).draw_slice)
+ return;
+
+ link_dpad(link).draw_slice(link, y, h);
}
-AVFilter *avfilter_get_by_name(char *name)
+AVFilter *avfilter_get_by_name(const char *name)
{
- AVFilter key = { .name = name, };
- AVFilter *key2 = &key;
- AVFilter **ret;
+ struct FilterList *filt;
+
+ for(filt = filters; filt; filt = filt->next)
+ if(!strcmp(filt->filter->name, name))
+ return filt->filter;
- ret = bsearch(&key2, filters, filter_count, sizeof(AVFilter **), filter_cmp);
- if(ret)
- return *ret;
return NULL;
}
-/* FIXME: insert in order, rather than insert at end + resort */
void avfilter_register(AVFilter *filter)
{
- filters = av_realloc(filters, sizeof(AVFilter*) * (filter_count+1));
- filters[filter_count] = filter;
- qsort(filters, ++filter_count, sizeof(AVFilter **), filter_cmp);
+ struct FilterList *newfilt = av_malloc(sizeof(struct FilterList));
+
+ newfilt->filter = filter;
+ newfilt->next = filters;
+ filters = newfilt;
}
void avfilter_init(void)
{
- avfilter_register(&vsrc_dummy);
- avfilter_register(&vf_crop);
- avfilter_register(&vf_passthrough);
- avfilter_register(&vf_slicify);
- avfilter_register(&vo_sdl);
+ avfilter_register(&avfilter_vf_crop);
+ avfilter_register(&avfilter_vf_fifo);
+ avfilter_register(&avfilter_vf_format);
+ avfilter_register(&avfilter_vf_fps);
+ avfilter_register(&avfilter_vf_graph);
+ avfilter_register(&avfilter_vf_graphdesc);
+ avfilter_register(&avfilter_vf_graphfile);
+ avfilter_register(&avfilter_vf_hflip);
+ avfilter_register(&avfilter_vf_negate);
+ avfilter_register(&avfilter_vf_noformat);
+ avfilter_register(&avfilter_vf_overlay);
+ avfilter_register(&avfilter_vf_rotate);
+ avfilter_register(&avfilter_vf_scale);
+ avfilter_register(&avfilter_vf_setpts);
+ avfilter_register(&avfilter_vf_slicify);
+ avfilter_register(&avfilter_vf_split);
+ avfilter_register(&avfilter_vf_transpose);
+ avfilter_register(&avfilter_vf_vflip);
+#ifdef CONFIG_AVFILTER_LAVF
+ avfilter_register(&avfilter_vsrc_movie);
+#endif //CONFIG_AVFILTER_LAVF
}
void avfilter_uninit(void)
{
- av_freep(&filters);
- filter_count = 0;
+ struct FilterList *tmp;
+
+ for(; filters; filters = tmp) {
+ tmp = filters->next;
+ av_free(filters);
+ }
}
static int pad_count(const AVFilterPad *pads)
{
- AVFilterPad *p = (AVFilterPad *) pads;
int count;
- for(count = 0; p->name; count ++) p ++;
+ for(count = 0; pads->name; count ++) pads ++;
return count;
}
return filter->filter->name;
}
-AVFilterContext *avfilter_create(AVFilter *filter)
+AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name)
{
- AVFilterContext *ret = av_malloc(sizeof(AVFilterContext));
+ AVFilterContext *ret;
+
+ if (!filter)
+ return 0;
+
+ ret = av_malloc(sizeof(AVFilterContext));
ret->av_class = av_mallocz(sizeof(AVClass));
ret->av_class->item_name = filter_name;
ret->filter = filter;
- ret->inputs = av_mallocz(sizeof(AVFilterLink*) * pad_count(filter->inputs));
- ret->outputs = av_mallocz(sizeof(AVFilterLink*) * pad_count(filter->outputs));
+ ret->name = inst_name ? av_strdup(inst_name) : NULL;
ret->priv = av_mallocz(filter->priv_size);
+ ret->input_count = pad_count(filter->inputs);
+ ret->input_pads = av_malloc(sizeof(AVFilterPad) * ret->input_count);
+ memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad)*ret->input_count);
+ ret->inputs = av_mallocz(sizeof(AVFilterLink*) * ret->input_count);
+
+ ret->output_count = pad_count(filter->outputs);
+ ret->output_pads = av_malloc(sizeof(AVFilterPad) * ret->output_count);
+ memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad)*ret->output_count);
+ ret->outputs = av_mallocz(sizeof(AVFilterLink*) * ret->output_count);
+
return ret;
}
if(filter->filter->uninit)
filter->filter->uninit(filter);
- for(i = 0; i < pad_count(filter->filter->inputs); i ++) {
+ for(i = 0; i < filter->input_count; i ++) {
if(filter->inputs[i])
filter->inputs[i]->src->outputs[filter->inputs[i]->srcpad] = NULL;
- av_free(filter->inputs[i]);
+ av_freep(&filter->inputs[i]);
}
- for(i = 0; i < pad_count(filter->filter->outputs); i ++) {
+ for(i = 0; i < filter->output_count; i ++) {
if(filter->outputs[i])
filter->outputs[i]->dst->inputs[filter->outputs[i]->dstpad] = NULL;
- av_free(filter->outputs[i]);
+ av_freep(&filter->outputs[i]);
}
- av_free(filter->inputs);
- av_free(filter->outputs);
- av_free(filter->priv);
- av_free(filter->av_class);
+ av_freep(&filter->name);
+ av_freep(&filter->input_pads);
+ av_freep(&filter->output_pads);
+ av_freep(&filter->inputs);
+ av_freep(&filter->outputs);
+ av_freep(&filter->priv);
+ av_freep(&filter->av_class);
av_free(filter);
}
-AVFilterContext *avfilter_create_by_name(char *name)
-{
- AVFilter *filt;
-
- if(!(filt = avfilter_get_by_name(name))) return NULL;
- return avfilter_create(filt);
-}
-
-int avfilter_init_filter(AVFilterContext *filter, const char *args)
+int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
{
- int ret, i;
+ int ret;
if(filter->filter->init)
- if((ret = filter->filter->init(filter, args))) return ret;
+ if((ret = filter->filter->init(filter, args, opaque))) return ret;
return 0;
}
-int *avfilter_make_format_list(int len, ...)
-{
- int *ret, i;
- va_list vl;
-
- ret = av_malloc(sizeof(int) * (len + 1));
- va_start(vl, len);
- for(i = 0; i < len; i ++)
- ret[i] = va_arg(vl, int);
- va_end(vl);
- ret[len] = -1;
-
- return ret;
-}
-
projects / ffmpeg / blobdiff