Originally committed as revision 14359 to svn://svn.ffmpeg.org/ffmpeg/trunk
+/**
+ * Hybrid window filtering. See blocks 36 and 49 of the G.728 specification.
+ *
+ * @param order the order of the filter
+ * @param n the length of the input
+ * @param non_rec the number of non recursive samples
+ * @param out the filter output
+ * @param in pointer to the input of the filter
+ * @param hist pointer to the input history of the filter. It is updated by
+ * this function.
+ * @param out pointer to the non recursive part of the output
+ * @param out2 pointer to the recursive part of the output
+ * @param window pointer to the windowing function table
+ */
static void do_hybrid_window(int order, int n, int non_rec, const float *in,
float *out, float *hist, float *out2,
const float *window)
static void do_hybrid_window(int order, int n, int non_rec, const float *in,
float *out, float *hist, float *out2,
const float *window)
float buffer2[37];
float work[111];
float buffer2[37];
float work[111];
- /* rotate and multiply */
memmove(hist , hist + n, (order + non_rec)*sizeof(*hist));
memcpy (hist + order + non_rec, in , n *sizeof(*hist));
memmove(hist , hist + n, (order + non_rec)*sizeof(*hist));
memcpy (hist + order + non_rec, in , n *sizeof(*hist));