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ffplay: unify displaymatrix based rotation code

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Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-05-03 02:27:54 +02:00
parent 372aa0777a
commit f9e802018e
1 changed files with 23 additions and 22 deletions
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45
ffplay.c
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@ -33,6 +33,7 @@
#include "libavutil/avstring.h"
#include "libavutil/colorspace.h"
#include "libavutil/display.h"
#include "libavutil/eval.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
@ -2020,30 +2021,30 @@ static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const c
AVDictionaryEntry *rotate_tag = av_dict_get(is->video_st->metadata, "rotate", NULL, 0);
uint8_t* displaymatrix = av_stream_get_side_data(is->video_st,
AV_PKT_DATA_DISPLAYMATRIX, NULL);
double theta = 0;
if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
if (!strcmp(rotate_tag->value, "90")) {
INSERT_FILT("transpose", "clock");
} else if (!strcmp(rotate_tag->value, "180")) {
INSERT_FILT("hflip", NULL);
INSERT_FILT("vflip", NULL);
} else if (!strcmp(rotate_tag->value, "270")) {
INSERT_FILT("transpose", "cclock");
} else {
char rotate_buf[64];
snprintf(rotate_buf, sizeof(rotate_buf), "%s*PI/180", rotate_tag->value);
INSERT_FILT("rotate", rotate_buf);
}
} else if (displaymatrix) {
double rot = av_display_rotation_get((int32_t*) displaymatrix);
if (rot < -135 || rot > 135) {
INSERT_FILT("vflip", NULL);
INSERT_FILT("hflip", NULL);
} else if (rot < -45) {
INSERT_FILT("transpose", "dir=clock");
} else if (rot > 45) {
INSERT_FILT("transpose", "dir=cclock");
}
char *tail;
theta = av_strtod(rotate_tag->value, &tail);
if (*tail)
theta = 0;
}
if (displaymatrix && !theta)
theta = av_display_rotation_get((int32_t*) displaymatrix);
theta -= 360*floor(theta/360 + 0.9/360);
if (fabs(theta - 90) < 1.0) {
INSERT_FILT("transpose", "clock");
} else if (fabs(theta - 180) < 1.0) {
INSERT_FILT("hflip", NULL);
INSERT_FILT("vflip", NULL);
} else if (fabs(theta - 270) < 1.0) {
INSERT_FILT("transpose", "cclock");
} else if (fabs(theta) > 1.0) {
char rotate_buf[64];
snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
INSERT_FILT("rotate", rotate_buf);
}
}