+#define DCA_MARKER_14B_BE 0x1FFFE800
+#define DCA_MARKER_14B_LE 0xFF1F00E8
+#define DCA_MARKER_RAW_BE 0x7FFE8001
+#define DCA_MARKER_RAW_LE 0xFE7F0180
+static int dts_probe(AVProbeData *p)
+{
+ const uint8_t *buf, *bufp;
+ uint32_t state = -1;
+
+ buf = p->buf;
+
+ for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
+ bufp = buf;
+ state = (state << 16) | bytestream_get_be16(&bufp);
+
+ /* Regular bitstream */
+ if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)
+ return AVPROBE_SCORE_MAX/2+1;
+
+ /* 14 bits big endian bitstream */
+ if (state == DCA_MARKER_14B_BE)
+ if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
+ return AVPROBE_SCORE_MAX/2+1;
+
+ /* 14 bits little endian bitstream */
+ if (state == DCA_MARKER_14B_LE)
+ if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
+ return AVPROBE_SCORE_MAX/2+1;
+ }
+
+ return 0;
+}
+