mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
b5c582fa9d
These fields are never used, and they do not seem to belong to AVFilterBuffer anymore, now that it is now a media-independent structure and these fields are video-related. Patch by S.N. Hemanth Meenakshisundaram smeenaks ! ucsd ! edu. Originally committed as revision 24291 to svn://svn.ffmpeg.org/ffmpeg/trunk
187 lines
5.5 KiB
C
187 lines
5.5 KiB
C
/*
|
|
* Filter layer - default implementations
|
|
* copyright (c) 2007 Bobby Bingham
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavcodec/imgconvert.h"
|
|
#include "avfilter.h"
|
|
|
|
/* TODO: buffer pool. see comment for avfilter_default_get_video_buffer() */
|
|
static void avfilter_default_free_buffer(AVFilterBuffer *ptr)
|
|
{
|
|
av_free(ptr->data[0]);
|
|
av_free(ptr);
|
|
}
|
|
|
|
/* 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, int w, int h)
|
|
{
|
|
AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer));
|
|
AVFilterPicRef *ref = av_mallocz(sizeof(AVFilterPicRef));
|
|
int i, tempsize;
|
|
char *buf;
|
|
|
|
ref->pic = pic;
|
|
ref->w = w;
|
|
ref->h = h;
|
|
|
|
/* make sure the buffer gets read permission or it's useless for output */
|
|
ref->perms = perms | AV_PERM_READ;
|
|
|
|
pic->refcount = 1;
|
|
pic->format = link->format;
|
|
pic->free = avfilter_default_free_buffer;
|
|
ff_fill_linesize((AVPicture *)pic, pic->format, ref->w);
|
|
|
|
for (i=0; i<4;i++)
|
|
pic->linesize[i] = FFALIGN(pic->linesize[i], 16);
|
|
|
|
tempsize = ff_fill_pointer((AVPicture *)pic, NULL, pic->format, ref->h);
|
|
buf = av_malloc(tempsize + 16); // +2 is needed for swscaler, +16 to be
|
|
// SIMD-friendly
|
|
ff_fill_pointer((AVPicture *)pic, buf, pic->format, 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];
|
|
|
|
if(out) {
|
|
out->outpic = avfilter_get_video_buffer(out, AV_PERM_WRITE, out->w, out->h);
|
|
avfilter_copy_picref_props(out->outpic, picref);
|
|
avfilter_start_frame(out, avfilter_ref_pic(out->outpic, ~0));
|
|
}
|
|
}
|
|
|
|
void avfilter_default_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
|
|
{
|
|
AVFilterLink *out = NULL;
|
|
|
|
if(link->dst->output_count)
|
|
out = link->dst->outputs[0];
|
|
|
|
if(out)
|
|
avfilter_draw_slice(out, y, h, slice_dir);
|
|
}
|
|
|
|
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) {
|
|
if(out->outpic) {
|
|
avfilter_unref_pic(out->outpic);
|
|
out->outpic = NULL;
|
|
}
|
|
avfilter_end_frame(out);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* default config_link() implementation for output video links to simplify
|
|
* the implementation of one input one output video filters */
|
|
int avfilter_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. */
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* A helper for query_formats() which sets all links to the same list of
|
|
* formats. If there are no links hooked to this filter, the list of formats is
|
|
* freed.
|
|
*
|
|
* FIXME: this will need changed for filters with a mix of pad types
|
|
* (video + audio, etc)
|
|
*/
|
|
void avfilter_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
|
|
{
|
|
int count = 0, i;
|
|
|
|
for(i = 0; i < ctx->input_count; i ++) {
|
|
if(ctx->inputs[i]) {
|
|
avfilter_formats_ref(formats, &ctx->inputs[i]->out_formats);
|
|
count ++;
|
|
}
|
|
}
|
|
for(i = 0; i < ctx->output_count; i ++) {
|
|
if(ctx->outputs[i]) {
|
|
avfilter_formats_ref(formats, &ctx->outputs[i]->in_formats);
|
|
count ++;
|
|
}
|
|
}
|
|
|
|
if(!count) {
|
|
av_free(formats->formats);
|
|
av_free(formats->refs);
|
|
av_free(formats);
|
|
}
|
|
}
|
|
|
|
int avfilter_default_query_formats(AVFilterContext *ctx)
|
|
{
|
|
avfilter_set_common_formats(ctx, avfilter_all_colorspaces());
|
|
return 0;
|
|
}
|
|
|
|
void avfilter_null_start_frame(AVFilterLink *link, AVFilterPicRef *picref)
|
|
{
|
|
avfilter_start_frame(link->dst->outputs[0], picref);
|
|
}
|
|
|
|
void avfilter_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
|
|
{
|
|
avfilter_draw_slice(link->dst->outputs[0], y, h, slice_dir);
|
|
}
|
|
|
|
void avfilter_null_end_frame(AVFilterLink *link)
|
|
{
|
|
avfilter_end_frame(link->dst->outputs[0]);
|
|
}
|
|
|
|
AVFilterPicRef *avfilter_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
|
|
{
|
|
return avfilter_get_video_buffer(link->dst->outputs[0], perms, w, h);
|
|
}
|
|
|