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rtpjpegpay: Skip APP and JPG markers and print warnings for unknown markers

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For APP/JPG markers the size is following and we have to skip that. This is
not really a problem unless the marker contains e.g. a preview JPEG or
something else that we might interprete as another marker.
This commit is contained in:
Sebastian Dröge 2016-01-30 18:43:30 +01:00
parent 7873bede31
commit e244b9be87
1 changed files with 17 additions and 2 deletions
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19
gst/rtp/gstrtpjpegpay.c
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@ -107,10 +107,15 @@ enum _RtpJpegMarker
JPEG_MARKER_DQT = 0xDB,
JPEG_MARKER_SOF = 0xC0,
JPEG_MARKER_DHT = 0xC4,
JPEG_MARKER_JPG = 0xC8,
JPEG_MARKER_SOS = 0xDA,
JPEG_MARKER_EOI = 0xD9,
JPEG_MARKER_DRI = 0xDD,
JPEG_MARKER_H264 = 0xE4
JPEG_MARKER_APP0 = 0xE0,
JPEG_MARKER_H264 = 0xE4, /* APP4 */
JPEG_MARKER_APP15 = 0xEF,
JPEG_MARKER_JPG0 = 0xF0,
JPEG_MARKER_JPG13 = 0xFD
};
#define DEFAULT_JPEG_QUANT 255
@ -712,8 +717,10 @@ gst_rtp_jpeg_pay_handle_buffer (GstRTPBasePayload * basepayload,
dri_found = FALSE;
while (!sos_found && (offset < size)) {
gint marker;
GST_LOG_OBJECT (pay, "checking from offset %u", offset);
switch (gst_rtp_jpeg_pay_scan_marker (data, size, &offset)) {
switch ((marker = gst_rtp_jpeg_pay_scan_marker (data, size, &offset))) {
case JPEG_MARKER_JFIF:
case JPEG_MARKER_CMT:
case JPEG_MARKER_DHT:
@ -750,6 +757,14 @@ gst_rtp_jpeg_pay_handle_buffer (GstRTPBasePayload * basepayload,
dri_found = TRUE;
break;
default:
if (marker == JPEG_MARKER_JPG ||
(marker >= JPEG_MARKER_JPG0 && marker <= JPEG_MARKER_JPG13) ||
(marker >= JPEG_MARKER_APP0 && marker <= JPEG_MARKER_APP15)) {
GST_LOG_OBJECT (pay, "skipping marker");
offset += gst_rtp_jpeg_pay_header_size (data, offset);
} else {
GST_FIXME_OBJECT (pay, "unhandled marker 0x%02x", marker);
}
break;
}
}