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lavf/img2dec: Auto-detect svg images.

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This commit is contained in:
Carl Eugen Hoyos 2017-10-02 11:38:34 +02:00
parent cc5b7601f7
commit a20f64bee2
1 changed files with 12 additions and 2 deletions
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14
libavformat/img2dec.c
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@ -34,6 +34,7 @@
#include "internal.h"
#include "img2.h"
#include "libavcodec/mjpeg.h"
#include "subtitles.h"
#if HAVE_GLOB
/* Locally define as 0 (bitwise-OR no-op) any missing glob options that
@ -875,8 +876,17 @@ static int sunrast_probe(AVProbeData *p)
static int svg_probe(AVProbeData *p)
{
if (av_match_ext(p->filename, "svg") || av_match_ext(p->filename, "svgz"))
return AVPROBE_SCORE_EXTENSION + 1;
const uint8_t *b = p->buf;
const uint8_t *end = p->buf + p->buf_size;
if (memcmp(p->buf, "<?xml", 5))
return 0;
while (b < end) {
b += ff_subtitles_next_line(b);
if (b >= end - 4)
return 0;
if (!memcmp(b, "<svg", 4))
return AVPROBE_SCORE_EXTENSION + 1;
}
return 0;
}