From 4ff884069787161138e604b7aae495d27c457287 Mon Sep 17 00:00:00 2001 From: Peter Ross Date: Wed, 15 Sep 2021 20:15:42 +1000 Subject: avformat/img2dec: add GEM Raster image demuxer Signed-off-by: Peter Ross --- libavformat/img2dec.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'libavformat/img2dec.c') diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c index ad4cc623c8..b535831e1c 100644 --- a/libavformat/img2dec.c +++ b/libavformat/img2dec.c @@ -1105,6 +1105,27 @@ static int photocd_probe(const AVProbeData *p) return AVPROBE_SCORE_MAX - 1; } +static int gem_probe(const AVProbeData *p) +{ + const uint8_t *b = p->buf; + int ret = 0; + if ( AV_RB16(b ) >= 1 && AV_RB16(b ) <= 3 && + AV_RB16(b + 2) >= 8 && AV_RB16(b + 2) <= 779 && + (AV_RB16(b + 4) > 0 || AV_RB16(b + 4) <= 8) && + (AV_RB16(b + 6) > 0 || AV_RB16(b + 6) <= 8) && + AV_RB16(b + 8) && + AV_RB16(b + 10) && + AV_RB16(b + 12) && + AV_RB16(b + 14)) { + ret = AVPROBE_SCORE_EXTENSION / 4; + if (AV_RN32(b + 16) == AV_RN32("STTT") || + AV_RN32(b + 16) == AV_RN32("TIMG") || + AV_RN32(b + 16) == AV_RN32("XIMG")) + ret += 1; + } + return ret; +} + #define IMAGEAUTO_DEMUXER(imgname, codecid)\ const AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\ .name = AV_STRINGIFY(imgname) "_pipe",\ @@ -1123,6 +1144,7 @@ IMAGEAUTO_DEMUXER(cri, AV_CODEC_ID_CRI) IMAGEAUTO_DEMUXER(dds, AV_CODEC_ID_DDS) IMAGEAUTO_DEMUXER(dpx, AV_CODEC_ID_DPX) IMAGEAUTO_DEMUXER(exr, AV_CODEC_ID_EXR) +IMAGEAUTO_DEMUXER(gem, AV_CODEC_ID_GEM) IMAGEAUTO_DEMUXER(gif, AV_CODEC_ID_GIF) IMAGEAUTO_DEMUXER(j2k, AV_CODEC_ID_JPEG2000) IMAGEAUTO_DEMUXER(jpeg, AV_CODEC_ID_MJPEG) -- cgit v1.2.3