initial celt struct

libcelt/celt.c

@@ -0,0 +1,80 @@
+/* (C) 2007 Jean-Marc Valin, CSIRO
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "os_support.h"
+
+struct CELTState_ {
+   int frame_size;
+   int block_size;
+   int nb_blocks;
+      
+   float preemph;
+   float preemph_mem;
+   
+   float *window;
+   float *in_mem;
+   float *mdct_overlap;
+   float *out_mem;
+};
+
+typedef struct CELTState_ CELTState;
+
+CELTState *celt_init(int blockSize, int blocksPerFrame)
+{
+   
+}
+
+void celt_encode(CELTState *st, short *pcm)
+{
+   int i;
+   int N = st->block_size;
+   float in[(st->nb_blocks+1)*N];
+   float X[st->nb_blocks*N];
+   
+   /* FIXME: Add preemphasis */
+   for (i=0;i<N;i++)
+      in[i] = st->in_mem[i];
+   for (;i<st->nb_blocks*N;i++)
+      in[i] = pcm[i-N];
+   
+   /* Compute MDCTs */
+
+   /* Pitch analysis */
+
+   /* Band normalisation */
+
+   /* Pitch prediction */
+
+   /* Residual quantisation */
+   
+   /* Synthesis */
+}
+