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vsrc_mandelbrot: set options through the opt framework

This commit is contained in:
Stefano Sabatini 2011-11-13 19:12:00 +01:00
parent c15400afc5
commit 3a9f2f1d65
2 changed files with 59 additions and 23 deletions
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2
libavfilter/avfilter.h
View File

@ -30,7 +30,7 @@
#define LIBAVFILTER_VERSION_MAJOR 2
#define LIBAVFILTER_VERSION_MINOR 48
#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_MICRO 1
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \

80
libavfilter/vsrc_mandelbrot.c
View File

@ -28,6 +28,7 @@
#include "avfilter.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#define SQR(a) ((a)*(a))
@ -48,9 +49,11 @@ typedef struct Point {
} Point;
typedef struct {
const AVClass *class;
int w, h;
AVRational time_base;
uint64_t pts;
char *size, *rate;
int maxiter;
double start_x;
double start_y;
@ -67,41 +70,72 @@ typedef struct {
double (*zyklus)[2];
} MBContext;
#define OFFSET(x) offsetof(MBContext, x)
static const AVOption mandelbrot_options[] = {
{"size", "set frame size", OFFSET(size), AV_OPT_TYPE_STRING, {.str="640x480"}, CHAR_MIN, CHAR_MAX },
{"s", "set frame size", OFFSET(size), AV_OPT_TYPE_STRING, {.str="640x480"}, CHAR_MIN, CHAR_MAX },
{"rate", "set frame rate", OFFSET(rate), AV_OPT_TYPE_STRING, {.str="25"}, CHAR_MIN, CHAR_MAX },
{"r", "set frame rate", OFFSET(rate), AV_OPT_TYPE_STRING, {.str="25"}, CHAR_MIN, CHAR_MAX },
{"maxiter", "set max iterations number", OFFSET(maxiter), AV_OPT_TYPE_INT, {.dbl=4096}, 1, INT_MAX },
{"start_x", "set the initial x position", OFFSET(start_x), AV_OPT_TYPE_DOUBLE, {.dbl=-0.743643887037158704752191506114774}, -INFINITY, INFINITY },
{"start_y", "set the initial y position", OFFSET(start_y), AV_OPT_TYPE_DOUBLE, {.dbl=-0.131825904205311970493132056385139}, -INFINITY, INFINITY },
{"start_scale", "set the initial scale value", OFFSET(start_scale), AV_OPT_TYPE_DOUBLE, {.dbl=3.0}, -INFINITY, INFINITY },
{"end_scale", "set the terminal scale value", OFFSET(end_scale), AV_OPT_TYPE_DOUBLE, {.dbl=0.3}, -INFINITY, INFINITY },
{"end_pts", "set the terminal pts value", OFFSET(end_pts), AV_OPT_TYPE_DOUBLE, {.dbl=800}, -INFINITY, INFINITY },
{"bailout", "set the bailout value", OFFSET(bailout), AV_OPT_TYPE_DOUBLE, {.dbl=10}, -INFINITY, INFINITY },
{"outer", "set outer coloring mode", OFFSET(outer), AV_OPT_TYPE_INT, {.dbl=NORMALIZED_ITERATION_COUNT}, 0, INT_MAX, 0, "outer"},
{"iteration_count", "set iteration count mode", 0, AV_OPT_TYPE_CONST, {.dbl=ITERATION_COUNT}, INT_MIN, INT_MAX, 0, "outer" },
{"normalized_iteration_count", "set normalized iteration count mode", 0, AV_OPT_TYPE_CONST, {.dbl=NORMALIZED_ITERATION_COUNT}, INT_MIN, INT_MAX, 0, "outer" },
{"inner", "set inner coloring mode", OFFSET(inner), AV_OPT_TYPE_INT, {.dbl=BLACK}, 0, INT_MAX, 0, "inner"},
{"black", "set black mode", 0, AV_OPT_TYPE_CONST, {.dbl=BLACK}, INT_MIN, INT_MAX, 0, "inner" },
{"period", "set period mode", 0, AV_OPT_TYPE_CONST, {.dbl=PERIOD}, INT_MIN, INT_MAX, 0, "inner" },
{NULL},
};
static const char *mandelbrot_get_name(void *ctx)
{
return "mandelbrot";
}
static const AVClass mandelbrot_class = {
"MBContext",
mandelbrot_get_name,
mandelbrot_options
};
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
{
MBContext *mb = ctx->priv;
char frame_size [128] = "640x480";
char frame_rate [128] = "25";
AVRational frame_rate_q;
AVRational rate_q;
int err;
mb->maxiter=4096;
mb->start_x=-0.743643887037158704752191506114774;
mb->start_y=-0.131825904205311970493132056385139;
mb->start_scale=3.0;
mb->end_scale=0.3;
mb->end_pts=800;
mb->bailout=10;
mb->outer= NORMALIZED_ITERATION_COUNT;
if (args)
sscanf(args, "%127[^:]:%127[^:]:%d:%lf:%lf:%lf:%lf:%lf:%lf:%d", frame_size, frame_rate,
&mb->maxiter, &mb->start_x, &mb->start_y, &mb->start_scale, &mb->end_scale,
&mb->end_pts, &mb->bailout, &mb->outer);
mb->class = &mandelbrot_class;
av_opt_set_defaults(mb);
if ((err = (av_set_options_string(mb, args, "=", ":"))) < 0) {
av_log(ctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return err;
}
mb->bailout *= mb->bailout;
if (av_parse_video_size(&mb->w, &mb->h, frame_size) < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame size: %s\n", frame_size);
if (av_parse_video_size(&mb->w, &mb->h, mb->size) < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame size: %s\n", mb->size);
return AVERROR(EINVAL);
}
mb->start_scale /=mb->h;
mb->end_scale /=mb->h;
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);
if (av_parse_video_rate(&rate_q, mb->rate) < 0 ||
rate_q.den <= 0 || rate_q.num <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: %s\n", mb->rate);
return AVERROR(EINVAL);
}
mb->time_base.num = frame_rate_q.den;
mb->time_base.den = frame_rate_q.num;
mb->time_base.num = rate_q.den;
mb->time_base.den = rate_q.num;
mb->cache_allocated = mb->w * mb->h * 3;
mb->cache_used = 0;
@ -116,6 +150,8 @@ static av_cold void uninit(AVFilterContext *ctx)
{
MBContext *mb = ctx->priv;
av_freep(&mb->size);
av_freep(&mb->rate);
av_freep(&mb->point_cache);
av_freep(&mb-> next_cache);
av_freep(&mb->zyklus);