/*
- * Filter layer
+ * filter layer
* copyright (c) 2007 Bobby Bingham
*
* This file is part of FFmpeg.
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
+/* #define DEBUG */
+#include "libavcodec/imgconvert.h"
#include "avfilter.h"
-#include "allfilters.h"
-/** list of registered filters */
-struct FilterList
+unsigned avfilter_version(void) {
+ return LIBAVFILTER_VERSION_INT;
+}
+
+const char *avfilter_configuration(void)
+{
+ return FFMPEG_CONFIGURATION;
+}
+
+const char *avfilter_license(void)
{
- AVFilter *filter;
- struct FilterList *next;
-} *filters = NULL;
+#define LICENSE_PREFIX "libavfilter license: "
+ return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
+}
/** helper macros to get the in/out pad on the dst/src filter */
#define link_dpad(link) link->dst-> input_pads[link->dstpad]
void avfilter_unref_pic(AVFilterPicRef *ref)
{
- if(-- ref->pic->refcount == 0)
+ if(!(--ref->pic->refcount))
ref->pic->free(ref->pic);
av_free(ref);
}
(*count) ++;
for(i = idx+1; i < *count; i ++)
if(*links[i])
- (*(unsigned *)((uint8_t *)(*links[i]) + padidx_off)) ++;
+ (*(unsigned *)((uint8_t *) *links[i] + padidx_off)) ++;
}
int avfilter_link(AVFilterContext *src, unsigned srcpad,
return -1;
src->outputs[srcpad] =
- dst->inputs[dstpad] = link = av_mallocz(sizeof(AVFilterLink));
+ dst-> inputs[dstpad] = link = av_mallocz(sizeof(AVFilterLink));
link->src = src;
link->dst = dst;
link->srcpad = srcpad;
link->dstpad = dstpad;
- link->format = -1;
+ link->format = PIX_FMT_NONE;
+
+ return 0;
+}
+
+int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
+ unsigned in, unsigned out)
+{
+ av_log(link->dst, 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;
+ }
+
+ /* 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(link->out_formats)
+ avfilter_formats_changeref(&link->out_formats,
+ &filt->outputs[out]->out_formats);
return 0;
}
-int avfilter_config_link(AVFilterLink *link)
+int avfilter_config_links(AVFilterContext *filter)
{
- int *fmts[2], i, j;
int (*config_link)(AVFilterLink *);
- int *(*query_formats)(AVFilterLink *link);
+ unsigned i;
- if(!link)
- return 0;
+ for(i = 0; i < filter->input_count; i ++) {
+ AVFilterLink *link = filter->inputs[i];
- /* find a format both filters support - TODO: auto-insert conversion filter */
- link->format = -1;
- if(!(query_formats = link_spad(link).query_formats))
- query_formats = avfilter_default_query_output_formats;
- fmts[0] = query_formats(link);
- fmts[1] = link_dpad(link).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;
- }
+ if(!link) continue;
-format_done:
- av_free(fmts[0]);
- av_free(fmts[1]);
- if(link->format == -1)
- return -1;
+ switch(link->init_state) {
+ case AVLINK_INIT:
+ continue;
+ case AVLINK_STARTINIT:
+ av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
+ return 0;
+ case AVLINK_UNINIT:
+ link->init_state = AVLINK_STARTINIT;
- if(!(config_link = link_spad(link).config_props))
- config_link = avfilter_default_config_output_link;
- if(config_link(link))
- return -1;
+ if(avfilter_config_links(link->src))
+ return -1;
- if(!(config_link = link_dpad(link).config_props))
- config_link = avfilter_default_config_input_link;
- if(config_link(link))
- return -1;
+ if(!(config_link = link_spad(link).config_props))
+ config_link = avfilter_default_config_output_link;
+ if(config_link(link))
+ return -1;
+
+ if((config_link = link_dpad(link).config_props))
+ if(config_link(link))
+ return -1;
+
+ link->init_state = AVLINK_INIT;
+ }
+ }
return 0;
}
-AVFilterPicRef *avfilter_get_video_buffer(AVFilterLink *link, int perms)
+static void dprintf_picref(void *ctx, AVFilterPicRef *picref, int end)
+{
+ dprintf(ctx,
+ "picref[%p data[%p, %p, %p, %p] linesize[%d, %d, %d, %d] pts:%"PRId64" s:%dx%d]%s",
+ picref,
+ picref->data [0], picref->data [1], picref->data [2], picref->data [3],
+ picref->linesize[0], picref->linesize[1], picref->linesize[2], picref->linesize[3],
+ picref->pts, picref->w, picref->h,
+ end ? "\n" : "");
+}
+
+static void dprintf_link(void *ctx, AVFilterLink *link, int end)
+{
+ dprintf(ctx,
+ "link[%p s:%dx%d fmt:%-16s %-16s->%-16s]%s",
+ link, link->w, link->h,
+ avcodec_get_pix_fmt_name(link->format),
+ link->src ? link->src->filter->name : "",
+ link->dst ? link->dst->filter->name : "",
+ end ? "\n" : "");
+}
+
+#define DPRINTF_START(ctx, func) dprintf(NULL, "%-16s: ", #func)
+
+AVFilterPicRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
{
AVFilterPicRef *ret = NULL;
+ DPRINTF_START(NULL, get_video_buffer); dprintf_link(NULL, link, 0); dprintf(NULL, " perms:%d w:%d h:%d\n", perms, w, h);
+
if(link_dpad(link).get_video_buffer)
- ret = link_dpad(link).get_video_buffer(link, perms);
+ ret = link_dpad(link).get_video_buffer(link, perms, w, h);
if(!ret)
- ret = avfilter_default_get_video_buffer(link, perms);
+ ret = avfilter_default_get_video_buffer(link, perms, w, h);
+
+ DPRINTF_START(NULL, get_video_buffer); dprintf_link(NULL, link, 0); dprintf(NULL, " returning "); dprintf_picref(NULL, ret, 1);
return ret;
}
int avfilter_request_frame(AVFilterLink *link)
{
+ DPRINTF_START(NULL, request_frame); dprintf_link(NULL, link, 1);
+
if(link_spad(link).request_frame)
return link_spad(link).request_frame(link);
else if(link->src->inputs[0])
else return -1;
}
+int avfilter_poll_frame(AVFilterLink *link)
+{
+ int i, min=INT_MAX;
+
+ if(link_spad(link).poll_frame)
+ return link_spad(link).poll_frame(link);
+
+ for (i=0; i<link->src->input_count; i++) {
+ int val;
+ if(!link->src->inputs[i])
+ return -1;
+ val = avfilter_poll_frame(link->src->inputs[i]);
+ min = FFMIN(min, val);
+ }
+
+ return min;
+}
+
/* XXX: should we do the duplicating of the picture ref here, instead of
* forcing the source filter to do it? */
void avfilter_start_frame(AVFilterLink *link, AVFilterPicRef *picref)
{
void (*start_frame)(AVFilterLink *, AVFilterPicRef *);
+ AVFilterPad *dst = &link_dpad(link);
- if(!(start_frame = link_dpad(link).start_frame))
+ DPRINTF_START(NULL, start_frame); dprintf_link(NULL, link, 0); dprintf(NULL, " "); dprintf_picref(NULL, picref, 1);
+
+ if(!(start_frame = dst->start_frame))
start_frame = avfilter_default_start_frame;
/* 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) {
+ if((dst->min_perms & picref->perms) != dst->min_perms ||
+ dst->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->cur_pic = avfilter_default_get_video_buffer(link, dst->min_perms, link->w, link->h);
link->srcpic = picref;
+ link->cur_pic->pts = link->srcpic->pts;
+ link->cur_pic->pixel_aspect = link->srcpic->pixel_aspect;
}
else
link->cur_pic = picref;
{
void (*end_frame)(AVFilterLink *);
+ if(!(end_frame = link_dpad(link).end_frame))
+ end_frame = avfilter_default_end_frame;
+
+ end_frame(link);
+
/* unreference the source picture if we're feeding the destination filter
* a copied version dues to permission issues */
if(link->srcpic) {
link->srcpic = NULL;
}
- if(!(end_frame = link_dpad(link).end_frame))
- end_frame = avfilter_default_end_frame;
-
- end_frame(link);
}
-void avfilter_draw_slice(AVFilterLink *link, int y, int h)
+void avfilter_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
uint8_t *src[4], *dst[4];
int i, j, hsub, vsub;
+ void (*draw_slice)(AVFilterLink *, int, int, int);
+
+ DPRINTF_START(NULL, draw_slice); dprintf_link(NULL, link, 0); dprintf(NULL, " y:%d h:%d dir:%d\n", y, h, slice_dir);
/* copy the slice if needed for permission reasons */
if(link->srcpic) {
avcodec_get_chroma_sub_sample(link->format, &hsub, &vsub);
- 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 ++) {
+ for(i = 0; 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];
+ src[i] = link->srcpic-> data[i] +
+ (y >> (i==0 ? 0 : vsub)) * link->srcpic-> linesize[i];
+ dst[i] = link->cur_pic->data[i] +
+ (y >> (i==0 ? 0 : 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 ++) {
+
+ for(i = 0; i < 4; i ++) {
+ int planew =
+ ff_get_plane_bytewidth(link->format, link->cur_pic->w, i);
+
if(!src[i]) continue;
- for(j = 0; j < h >> vsub; j ++) {
- memcpy(dst[i], src[i], link->cur_pic->linesize[i]);
+ for(j = 0; j < h >> (i==0 ? 0 : vsub); j ++) {
+ memcpy(dst[i], src[i], planew);
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);
+ if(!(draw_slice = link_dpad(link).draw_slice))
+ draw_slice = avfilter_default_draw_slice;
+ draw_slice(link, y, h, slice_dir);
}
-AVFilter *avfilter_get_by_name(char *name)
+#define MAX_REGISTERED_AVFILTERS_NB 64
+
+static AVFilter *registered_avfilters[MAX_REGISTERED_AVFILTERS_NB + 1];
+
+static int next_registered_avfilter_idx = 0;
+
+AVFilter *avfilter_get_by_name(const char *name)
{
- struct FilterList *filt;
+ int i;
- for(filt = filters; filt; filt = filt->next)
- if(!strcmp(filt->filter->name, name))
- return filt->filter;
+ for (i = 0; registered_avfilters[i]; i++)
+ if (!strcmp(registered_avfilters[i]->name, name))
+ return registered_avfilters[i];
return NULL;
}
-/* FIXME: insert in order, rather than insert at end + resort */
-void avfilter_register(AVFilter *filter)
+int avfilter_register(AVFilter *filter)
{
- struct FilterList *newfilt = av_malloc(sizeof(struct FilterList));
+ if (next_registered_avfilter_idx == MAX_REGISTERED_AVFILTERS_NB)
+ return -1;
- newfilt->filter = filter;
- newfilt->next = filters;
- filters = newfilt;
+ registered_avfilters[next_registered_avfilter_idx++] = filter;
+ return 0;
}
-void avfilter_init(void)
+AVFilter **av_filter_next(AVFilter **filter)
{
- avfilter_register(&vsrc_dummy);
- avfilter_register(&vsrc_ppm);
- avfilter_register(&vf_crop);
- avfilter_register(&vf_fifo);
- avfilter_register(&vf_fps);
- avfilter_register(&vf_graph);
- avfilter_register(&vf_graphdesc);
- avfilter_register(&vf_graphfile);
- avfilter_register(&vf_overlay);
- avfilter_register(&vf_passthrough);
- avfilter_register(&vf_rgb2bgr);
- avfilter_register(&vf_slicify);
- avfilter_register(&vf_split);
- avfilter_register(&vf_vflip);
+ return filter ? ++filter : ®istered_avfilters[0];
}
void avfilter_uninit(void)
{
- struct FilterList *tmp;
-
- for(; filters; filters = tmp) {
- tmp = filters->next;
- av_free(filters);
- }
+ memset(registered_avfilters, 0, sizeof(registered_avfilters));
+ next_registered_avfilter_idx = 0;
}
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_open(AVFilter *filter, char *inst_name)
+static const AVClass avfilter_class = {
+ "AVFilter",
+ filter_name
+};
+
+AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name)
{
- AVFilterContext *ret = av_malloc(sizeof(AVFilterContext));
+ AVFilterContext *ret;
+
+ if (!filter)
+ return 0;
+
+ ret = av_mallocz(sizeof(AVFilterContext));
- ret->av_class = av_mallocz(sizeof(AVClass));
- ret->av_class->item_name = filter_name;
+ ret->av_class = &avfilter_class;
ret->filter = filter;
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);
+ if (ret->input_count) {
+ 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);
+ if (ret->output_count) {
+ 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;
}
av_freep(&filter->inputs);
av_freep(&filter->outputs);
av_freep(&filter->priv);
- av_freep(&filter->av_class);
av_free(filter);
}
int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
{
- int ret;
+ int ret=0;
if(filter->filter->init)
- 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;
-
+ ret = filter->filter->init(filter, args, opaque);
return ret;
}
projects / ffmpeg / blobdiff