Moves opus_packet_parse_impl() from opus_decoder.c to opus.c

Because it's indirectly used in the encoder (through the repackerizer).

1 files changed, 0 insertions, 181 deletions

diff --git a/src/opus_decoder.c b/src/opus_decoder.c
index 666109ae..fc6f7b04 100644
--- a/src/opus_decoder.c
+++ b/src/opus_decoder.c
@@ -583,187 +583,6 @@ static int opus_decode_frame(OpusDecoder *st, const unsigned char *data,
 
 }
 
-static int parse_size(const unsigned char *data, opus_int32 len, opus_int16 *size)
-{
-   if (len<1)
-   {
-      *size = -1;
-      return -1;
-   } else if (data[0]<252)
-   {
-      *size = data[0];
-      return 1;
-   } else if (len<2)
-   {
-      *size = -1;
-      return -1;
-   } else {
-      *size = 4*data[1] + data[0];
-      return 2;
-   }
-}
-
-int opus_packet_parse_impl(const unsigned char *data, opus_int32 len,
-      int self_delimited, unsigned char *out_toc,
-      const unsigned char *frames[48], opus_int16 size[48],
-      int *payload_offset, opus_int32 *packet_offset)
-{
-   int i, bytes;
-   int count;
-   int cbr;
-   unsigned char ch, toc;
-   int framesize;
-   opus_int32 last_size;
-   opus_int32 pad = 0;
-   const unsigned char *data0 = data;
-
-   if (size==NULL)
-      return OPUS_BAD_ARG;
-
-   framesize = opus_packet_get_samples_per_frame(data, 48000);
-
-   cbr = 0;
-   toc = *data++;
-   len--;
-   last_size = len;
-   switch (toc&0x3)
-   {
-   /* One frame */
-   case 0:
-      count=1;
-      break;
-   /* Two CBR frames */
-   case 1:
-      count=2;
-      cbr = 1;
-      if (!self_delimited)
-      {
-         if (len&0x1)
-            return OPUS_INVALID_PACKET;
-         last_size = len/2;
-         /* If last_size doesn't fit in size[0], we'll catch it later */
-         size[0] = (opus_int16)last_size;
-      }
-      break;
-   /* Two VBR frames */
-   case 2:
-      count = 2;
-      bytes = parse_size(data, len, size);
-      len -= bytes;
-      if (size[0]<0 || size[0] > len)
-         return OPUS_INVALID_PACKET;
-      data += bytes;
-      last_size = len-size[0];
-      break;
-   /* Multiple CBR/VBR frames (from 0 to 120 ms) */
-   default: /*case 3:*/
-      if (len<1)
-         return OPUS_INVALID_PACKET;
-      /* Number of frames encoded in bits 0 to 5 */
-      ch = *data++;
-      count = ch&0x3F;
-      if (count <= 0 || framesize*count > 5760)
-         return OPUS_INVALID_PACKET;
-      len--;
-      /* Padding flag is bit 6 */
-      if (ch&0x40)
-      {
-         int p;
-         do {
-            int tmp;
-            if (len<=0)
-               return OPUS_INVALID_PACKET;
-            p = *data++;
-            len--;
-            tmp = p==255 ? 254: p;
-            len -= tmp;
-            pad += tmp;
-         } while (p==255);
-      }
-      if (len<0)
-         return OPUS_INVALID_PACKET;
-      /* VBR flag is bit 7 */
-      cbr = !(ch&0x80);
-      if (!cbr)
-      {
-         /* VBR case */
-         last_size = len;
-         for (i=0;i<count-1;i++)
-         {
-            bytes = parse_size(data, len, size+i);
-            len -= bytes;
-            if (size[i]<0 || size[i] > len)
-               return OPUS_INVALID_PACKET;
-            data += bytes;
-            last_size -= bytes+size[i];
-         }
-         if (last_size<0)
-            return OPUS_INVALID_PACKET;
-      } else if (!self_delimited)
-      {
-         /* CBR case */
-         last_size = len/count;
-         if (last_size*count!=len)
-            return OPUS_INVALID_PACKET;
-         for (i=0;i<count-1;i++)
-            size[i] = (opus_int16)last_size;
-      }
-      break;
-   }
-   /* Self-delimited framing has an extra size for the last frame. */
-   if (self_delimited)
-   {
-      bytes = parse_size(data, len, size+count-1);
-      len -= bytes;
-      if (size[count-1]<0 || size[count-1] > len)
-         return OPUS_INVALID_PACKET;
-      data += bytes;
-      /* For CBR packets, apply the size to all the frames. */
-      if (cbr)
-      {
-         if (size[count-1]*count > len)
-            return OPUS_INVALID_PACKET;
-         for (i=0;i<count-1;i++)
-            size[i] = size[count-1];
-      } else if (bytes+size[count-1] > last_size)
-         return OPUS_INVALID_PACKET;
-   } else
-   {
-      /* Because it's not encoded explicitly, it's possible the size of the
-         last packet (or all the packets, for the CBR case) is larger than
-         1275. Reject them here.*/
-      if (last_size > 1275)
-         return OPUS_INVALID_PACKET;
-      size[count-1] = (opus_int16)last_size;
-   }
-
-   if (payload_offset)
-      *payload_offset = (int)(data-data0);
-
-   for (i=0;i<count;i++)
-   {
-      if (frames)
-         frames[i] = data;
-      data += size[i];
-   }
-
-   if (packet_offset)
-      *packet_offset = pad+(opus_int32)(data-data0);
-
-   if (out_toc)
-      *out_toc = toc;
-
-   return count;
-}
-
-int opus_packet_parse(const unsigned char *data, opus_int32 len,
-      unsigned char *out_toc, const unsigned char *frames[48],
-      opus_int16 size[48], int *payload_offset)
-{
-   return opus_packet_parse_impl(data, len, 0, out_toc,
-                                 frames, size, payload_offset, NULL);
-}
-
 int opus_decode_native(OpusDecoder *st, const unsigned char *data,
       opus_int32 len, opus_val16 *pcm, int frame_size, int decode_fec,
       int self_delimited, opus_int32 *packet_offset, int soft_clip)