dca_parser: parse the sample rate and frame durations

1 files changed, 3 insertions, 44 deletions

diff --git a/libavcodec/dca.c b/libavcodec/dca.c
index 3f62c1e342..71c18002bf 100644
--- a/libavcodec/dca.c
+++ b/libavcodec/dca.c
@@ -38,6 +38,7 @@
 #include "dcadata.h"
 #include "dcahuff.h"
 #include "dca.h"
+#include "dca_parser.h"
 #include "synth_filter.h"
 #include "dcadsp.h"
 #include "fmtconvert.h"
@@ -1361,47 +1362,6 @@ static int dca_decode_block(DCAContext *s, int base_channel, int block_index)
 }
 
 /**
- * Convert bitstream to one representation based on sync marker
- */
-static int dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst,
-                                 int max_size)
-{
-    uint32_t mrk;
-    int i, tmp;
-    const uint16_t *ssrc = (const uint16_t *) src;
-    uint16_t *sdst = (uint16_t *) dst;
-    PutBitContext pb;
-
-    if ((unsigned) src_size > (unsigned) max_size) {
-//        av_log(NULL, AV_LOG_ERROR, "Input frame size larger than DCA_MAX_FRAME_SIZE!\n");
-//        return -1;
-        src_size = max_size;
-    }
-
-    mrk = AV_RB32(src);
-    switch (mrk) {
-    case DCA_MARKER_RAW_BE:
-        memcpy(dst, src, src_size);
-        return src_size;
-    case DCA_MARKER_RAW_LE:
-        for (i = 0; i < (src_size + 1) >> 1; i++)
-            *sdst++ = av_bswap16(*ssrc++);
-        return src_size;
-    case DCA_MARKER_14B_BE:
-    case DCA_MARKER_14B_LE:
-        init_put_bits(&pb, dst, max_size);
-        for (i = 0; i < (src_size + 1) >> 1; i++, src += 2) {
-            tmp = ((mrk == DCA_MARKER_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;
-    }
-}
-
-/**
  * Return the number of channels in an ExSS speaker mask (HD)
  */
 static int dca_exss_mask2count(int mask)
@@ -1688,8 +1648,8 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
 
     s->xch_present = 0;
 
-    s->dca_buffer_size = dca_convert_bitstream(buf, buf_size, s->dca_buffer,
-                                               DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE);
+    s->dca_buffer_size = ff_dca_convert_bitstream(buf, buf_size, s->dca_buffer,
+                                                  DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE);
     if (s->dca_buffer_size == AVERROR_INVALIDDATA) {
         av_log(avctx, AV_LOG_ERROR, "Not a valid DCA frame\n");
         return AVERROR_INVALIDDATA;
@@ -1703,7 +1663,6 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
     //set AVCodec values with parsed data
     avctx->sample_rate = s->sample_rate;
     avctx->bit_rate    = s->bit_rate;
-    avctx->frame_size  = s->sample_blocks * 32;
 
     s->profile = FF_PROFILE_DTS;