Changeset 337 for libmpc/trunk/libmpcdec

Timestamp:

06/27/07 20:00:25 (17 years ago)

Author:

r2d

Message:

make aligned swaping in buffer (alignement on buffer start, there is no alignement check in any struct, it may be needed)

File:

• libmpc/trunk/libmpcdec/mpc_demux.c (modified) (3 diffs)

libmpc/trunk/libmpcdec/mpc_demux.c

@@ -70 +70 @@
         mpc_uint32_t unread_bytes = d->bytes_total + d->buffer - d->bits_reader.buff
                         - ((8 - d->bits_reader.count) >> 3);
+        int offset = 0;
 
         if (min_bytes == 0 || min_bytes > DEMUX_BUFFER_SIZE ||
@@ -79 +80 @@
                 mpc_uint32_t bytes_free = DEMUX_BUFFER_SIZE - d->bytes_total;
 
-                if (flags & MPC_BUFFER_SWAP)
+                if (flags & MPC_BUFFER_SWAP) {
                         bytes2read &= -1 << 2;
+                        offset = (unread_bytes + 3) & ( -1 << 2);
+                        offset -= unread_bytes;
+                }
 
                 if (bytes2read > bytes_free) {
@@ -87 +91 @@
                                 d->bits_reader.buff++;
                         }
-                        memmove(d->buffer, d->bits_reader.buff, unread_bytes);
-                        d->bits_reader.buff = d->buffer;
-                        d->bytes_total = unread_bytes;
+                        memmove(d->buffer + offset, d->bits_reader.buff, unread_bytes);
+                        d->bits_reader.buff = d->buffer + offset;
+                        d->bytes_total = unread_bytes + offset;
                 }
                 bytes2read = d->r->read(d->r, d->buffer + d->bytes_total, bytes2read);