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Implement frei0r source. 

Originally committed as revision 25855 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-11-30 20:14:36 +00:00
parent 60445a0995
commit f8608dcac3
6 changed files with 144 additions and 11 deletions
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1
Changelog
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@ -60,6 +60,7 @@ version <next>:
- rename aspect filter to setdar, and pixelaspect to setsar
- IEC 61937 demuxer
- Mobotix .mxg demuxer
- frei0r source added
version 0.6:

29
doc/filters.texi
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@ -283,6 +283,7 @@ The following command:
will convert the input video to the format "yuv420p".
@anchor{frei0r}
@section frei0r
Apply a frei0r effect to the input video.
@ -869,6 +870,34 @@ respectively 352 and 288 (corresponding to the CIF size format).
timebase. The expression can contain the constants "PI", "E", "PHI",
"AVTB" (the default timebase), and defaults to the value "AVTB".
@section frei0r_src
Provide a frei0r source.
To enable compilation of this filter you need to install the frei0r
header and configure FFmpeg with --enable-frei0r.
The source supports the syntax:
@example
@var{size}:@var{rate}:@var{src_name}[@{=|:@}@var{param1}:@var{param2}:...:@var{paramN}]
@end example
@var{size} is the size of the video to generate, may be a string of the
form @var{width}x@var{height} or a frame size abbreviation.
@var{rate} is the rate of the video to generate, may be a string of
the form @var{num}/@var{den} or a frame rate abbreviation.
@var{src_name} is the name to the frei0r source to load. For more
information regarding frei0r and how to set the parameters read the
section "frei0r" (@pxref{frei0r}) in the description of the video
filters.
Some examples follow:
@example
# generate a frei0r partik0l source with size 200x200 and framerate 10
# which is overlayed on the overlay filter main input
frei0r_src=200x200:10:partik0l=1234 [overlay]; [in][overlay] overlay
@end example
@c man end VIDEO SOURCES
@chapter Video Sinks

1
libavfilter/Makefile
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@ -46,6 +46,7 @@ OBJS-$(CONFIG_YADIF_FILTER) += vf_yadif.o
OBJS-$(CONFIG_BUFFER_FILTER) += vsrc_buffer.o
OBJS-$(CONFIG_COLOR_FILTER) += vf_pad.o
OBJS-$(CONFIG_FREI0R_SRC_FILTER) += vf_frei0r.o
OBJS-$(CONFIG_NULLSRC_FILTER) += vsrc_nullsrc.o
OBJS-$(CONFIG_NULLSINK_FILTER) += vsink_nullsink.o

1
libavfilter/allfilters.c
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@ -67,6 +67,7 @@ void avfilter_register_all(void)
REGISTER_FILTER (BUFFER, buffer, vsrc);
REGISTER_FILTER (COLOR, color, vsrc);
REGISTER_FILTER (FREI0R, frei0r_src, vsrc);
REGISTER_FILTER (NULLSRC, nullsrc, vsrc);
REGISTER_FILTER (NULLSINK, nullsink, vsink);

2
libavfilter/avfilter.h
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@ -25,7 +25,7 @@
#include "libavutil/avutil.h"
#define LIBAVFILTER_VERSION_MAJOR 1
#define LIBAVFILTER_VERSION_MINOR 65
#define LIBAVFILTER_VERSION_MINOR 66
#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

121
libavfilter/vf_frei0r.c
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@ -27,6 +27,7 @@
#include <dlfcn.h>
#include <frei0r.h>
#include "libavutil/avstring.h"
#include "libavcore/imgutils.h"
#include "libavcore/parseutils.h"
#include "avfilter.h"
@ -54,6 +55,11 @@ typedef struct Frei0rContext {
f0r_destruct_f destruct;
f0r_deinit_f deinit;
char params[256];
/* only used by the source */
int w, h;
AVRational time_base;
uint64_t pts;
} Frei0rContext;
static void *load_sym(AVFilterContext *ctx, const char *sym_name)
@ -197,18 +203,14 @@ static void *load_path(AVFilterContext *ctx, const char *prefix, const char *nam
return dlopen(path, RTLD_NOW|RTLD_LOCAL);
}
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
static av_cold int frei0r_init(AVFilterContext *ctx,
const char *dl_name, int type)
{
Frei0rContext *frei0r = ctx->priv;
f0r_init_f f0r_init;
f0r_get_plugin_info_f f0r_get_plugin_info;
f0r_plugin_info_t *pi;
char dl_name[1024], *path;
*frei0r->params = 0;
if (args)
sscanf(args, "%1023[^:]:%255c", dl_name, frei0r->params);
char *path;
/* see: http://piksel.org/frei0r/1.2/spec/1.2/spec/group__pluglocations.html */
if ((path = av_strdup(getenv("FREI0R_PATH")))) {
@ -250,9 +252,10 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
f0r_get_plugin_info(&frei0r->plugin_info);
pi = &frei0r->plugin_info;
if (pi->plugin_type != F0R_PLUGIN_TYPE_FILTER) {
if (pi->plugin_type != type) {
av_log(ctx, AV_LOG_ERROR,
"Invalid type '%s' for the plugin, a filter plugin was expected\n",
"Invalid type '%s' for the plugin\n",
pi->plugin_type == F0R_PLUGIN_TYPE_FILTER ? "filter" :
pi->plugin_type == F0R_PLUGIN_TYPE_SOURCE ? "source" :
pi->plugin_type == F0R_PLUGIN_TYPE_MIXER2 ? "mixer2" :
pi->plugin_type == F0R_PLUGIN_TYPE_MIXER3 ? "mixer3" : "unknown");
@ -271,6 +274,18 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
return 0;
}
static av_cold int filter_init(AVFilterContext *ctx, const char *args, void *opaque)
{
Frei0rContext *frei0r = ctx->priv;
char dl_name[1024];
*frei0r->params = 0;
if (args)
sscanf(args, "%1023[^:]:%255c", dl_name, frei0r->params);
return frei0r_init(ctx, dl_name, F0R_PLUGIN_TYPE_FILTER);
}
static av_cold void uninit(AVFilterContext *ctx)
{
Frei0rContext *frei0r = ctx->priv;
@ -344,7 +359,7 @@ AVFilter avfilter_vf_frei0r = {
.description = NULL_IF_CONFIG_SMALL("Apply a frei0r effect."),
.query_formats = query_formats,
.init = init,
.init = filter_init,
.uninit = uninit,
.priv_size = sizeof(Frei0rContext),
@ -361,3 +376,89 @@ AVFilter avfilter_vf_frei0r = {
.type = AVMEDIA_TYPE_VIDEO, },
{ .name = NULL}},
};
static av_cold int source_init(AVFilterContext *ctx, const char *args, void *opaque)
{
Frei0rContext *frei0r = ctx->priv;
char dl_name[1024], c;
char frame_size[128] = "";
char frame_rate[128] = "";
AVRational frame_rate_q;
memset(frei0r->params, 0, sizeof(frei0r->params));
if (args)
sscanf(args, "%127[^:]:%127[^:]:%1023[^:=]%c%255c",
frame_size, frame_rate, dl_name, &c, frei0r->params);
if (av_parse_video_size(&frei0r->w, &frei0r->h, frame_size) < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame size: '%s'\n", frame_size);
return AVERROR(EINVAL);
}
if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0 ||
frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", frame_rate);
return AVERROR(EINVAL);
}
frei0r->time_base.num = frame_rate_q.den;
frei0r->time_base.den = frame_rate_q.num;
return frei0r_init(ctx, dl_name, F0R_PLUGIN_TYPE_SOURCE);
}
static int source_config_props(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
Frei0rContext *frei0r = ctx->priv;
if (av_image_check_size(frei0r->w, frei0r->h, 0, ctx) < 0)
return AVERROR(EINVAL);
outlink->w = frei0r->w;
outlink->h = frei0r->h;
outlink->time_base = frei0r->time_base;
if (!(frei0r->instance = frei0r->construct(outlink->w, outlink->h))) {
av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance");
return AVERROR(EINVAL);
}
return set_params(ctx, frei0r->params);
}
static int source_request_frame(AVFilterLink *outlink)
{
Frei0rContext *frei0r = outlink->src->priv;
AVFilterBufferRef *picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
picref->video->pixel_aspect = (AVRational) {1, 1};
picref->pts = frei0r->pts++;
picref->pos = -1;
avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
frei0r->update(frei0r->instance, av_rescale_q(picref->pts, frei0r->time_base, (AVRational){1,1000}),
NULL, (uint32_t *)picref->data[0]);
avfilter_draw_slice(outlink, 0, outlink->h, 1);
avfilter_end_frame(outlink);
avfilter_unref_buffer(picref);
return 0;
}
AVFilter avfilter_vsrc_frei0r_src = {
.name = "frei0r_src",
.description = NULL_IF_CONFIG_SMALL("Generate a frei0r source."),
.priv_size = sizeof(Frei0rContext),
.init = source_init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = (AVFilterPad[]) {{ .name = NULL}},
.outputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = source_request_frame,
.config_props = source_config_props },
{ .name = NULL}},
};