#include <stdint.h>
+#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#define DCA_HAS_STEREO(mask) \
((mask & DCA_SPEAKER_LAYOUT_STEREO) == DCA_SPEAKER_LAYOUT_STEREO)
+enum DCASpeakerPair {
+ DCA_SPEAKER_PAIR_C = 0x0001,
+ DCA_SPEAKER_PAIR_LR = 0x0002,
+ DCA_SPEAKER_PAIR_LsRs = 0x0004,
+ DCA_SPEAKER_PAIR_LFE1 = 0x0008,
+ DCA_SPEAKER_PAIR_Cs = 0x0010,
+ DCA_SPEAKER_PAIR_LhRh = 0x0020,
+ DCA_SPEAKER_PAIR_LsrRsr = 0x0040,
+ DCA_SPEAKER_PAIR_Ch = 0x0080,
+ DCA_SPEAKER_PAIR_Oh = 0x0100,
+ DCA_SPEAKER_PAIR_LcRc = 0x0200,
+ DCA_SPEAKER_PAIR_LwRw = 0x0400,
+ DCA_SPEAKER_PAIR_LssRss = 0x0800,
+ DCA_SPEAKER_PAIR_LFE2 = 0x1000,
+ DCA_SPEAKER_PAIR_LhsRhs = 0x2000,
+ DCA_SPEAKER_PAIR_Chr = 0x4000,
+ DCA_SPEAKER_PAIR_LhrRhr = 0x8000
+};
+
+/**
+ * Return number of individual channels in DCASpeakerPair mask
+ */
+static inline int ff_dca_count_chs_for_mask(unsigned int mask)
+{
+ return av_popcount((mask & 0xffff) | ((mask & 0xae66) << 16));
+}
+
enum DCARepresentationType {
DCA_REPR_TYPE_LtRt = 2,
DCA_REPR_TYPE_LhRh = 3