import original 0.9.5 release

[handbrake-jp/handbrake-jp.git] / libhb / downmix.h

diff --git a/libhb/downmix.h b/libhb/downmix.h
new file mode 100644 (file)
index 0000000..5a6ec0b
--- /dev/null
+++ b/libhb/downmix.h
@@ -0,0 +1,66 @@
+/* $Id: downmix.h,v 1.51 2005/11/04 13:09:40 stebbins Exp $
+
+   This file is part of the HandBrake source code.
+   Homepage: <http://handbrake.fr/>.
+   It may be used under the terms of the GNU General Public License. */
+
+#ifndef DOWNMIX_H
+#define DOWNMIX_H
+
+typedef float hb_sample_t;
+
+typedef struct
+{
+    int chan_map[10][2][8];
+    int inv_chan_map[10][2][8];
+} hb_chan_map_t;
+
+typedef struct
+{
+    int            mode_in;
+    int            mode_out;
+    int            nchans_in;
+    int            nchans_out;
+    hb_sample_t    matrix[8][8];
+    int            matrix_initialized;
+    hb_sample_t    clev;
+    hb_sample_t    slev;
+    hb_sample_t    level;
+    hb_sample_t    bias;
+    hb_chan_map_t  map_in;
+    hb_chan_map_t  map_out;
+
+    int center;
+    int left_surround;
+    int right_surround;
+    int rear_left_surround;
+    int rear_right_surround;
+} hb_downmix_t;
+
+// For convenience, a map to convert smpte channel layout
+// to QuickTime channel layout.
+// Map Indicies are mode, lfe, channel respectively
+extern hb_chan_map_t hb_smpte_chan_map;
+extern hb_chan_map_t hb_ac3_chan_map;
+extern hb_chan_map_t hb_qt_chan_map;
+
+hb_downmix_t * hb_downmix_init(int layout, int mixdown);
+void hb_downmix_close( hb_downmix_t **downmix );
+int hb_downmix_set_mode( hb_downmix_t * downmix, int layout, int mixdown );
+void hb_downmix_set_level( hb_downmix_t * downmix, hb_sample_t clev, hb_sample_t slev, hb_sample_t level );
+void hb_downmix_adjust_level( hb_downmix_t * downmix );
+void hb_downmix_set_bias( hb_downmix_t * downmix, hb_sample_t bias );
+void hb_downmix_set_chan_map( 
+    hb_downmix_t * downmix, 
+    hb_chan_map_t * map_in, 
+    hb_chan_map_t * map_out );
+void hb_downmix( hb_downmix_t * downmix, hb_sample_t * dst, hb_sample_t * src, int nsamples);
+void hb_layout_remap( 
+    hb_chan_map_t * map_in, 
+    hb_chan_map_t * map_out, 
+    int layout, 
+    hb_sample_t * samples, 
+    int nsamples );
+int hb_need_downmix( int layout, int mixdown );
+
+#endif /* DOWNMIX_H */