*/
#include <stdint.h>
+#include <string.h>
+
+#include "libavutil/error.h"
#include "dca.h"
+#include "dca_syncwords.h"
+#include "put_bits.h"
-const uint32_t ff_dca_sample_rates[16] =
-{
+const uint32_t avpriv_dca_sample_rates[16] = {
0, 8000, 16000, 32000, 0, 0, 11025, 22050, 44100, 0, 0,
12000, 24000, 48000, 96000, 192000
};
+
+int ff_dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst,
+ int max_size)
+{
+ uint32_t mrk;
+ int i, tmp;
+ PutBitContext pb;
+
+ if ((unsigned) src_size > (unsigned) max_size)
+ src_size = max_size;
+
+ mrk = AV_RB32(src);
+ switch (mrk) {
+ case DCA_SYNCWORD_CORE_BE:
+ memcpy(dst, src, src_size);
+ return src_size;
+ case DCA_SYNCWORD_CORE_LE:
+ for (i = 0; i < (src_size + 1) >> 1; i++) {
+ AV_WB16(dst, AV_RL16(src));
+ src += 2;
+ dst += 2;
+ }
+ return src_size;
+ case DCA_SYNCWORD_CORE_14B_BE:
+ case DCA_SYNCWORD_CORE_14B_LE:
+ init_put_bits(&pb, dst, max_size);
+ for (i = 0; i < (src_size + 1) >> 1; i++, src += 2) {
+ tmp = ((mrk == DCA_SYNCWORD_CORE_14B_BE) ? AV_RB16(src) : AV_RL16(src)) & 0x3FFF;
+ put_bits(&pb, 14, tmp);
+ }
+ flush_put_bits(&pb);
+ return (put_bits_count(&pb) + 7) >> 3;
+ default:
+ return AVERROR_INVALIDDATA;
+ }
+}