alacenc: add support for multi-channel encoding

1 files changed, 46 insertions, 0 deletions

diff --git a/libavcodec/alac_data.h b/libavcodec/alac_data.h
new file mode 100644
index 0000000000..ebb1f33a93
--- /dev/null
+++ b/libavcodec/alac_data.h
@@ -0,0 +1,46 @@
+/*
+ * ALAC encoder and decoder common data
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_ALAC_DATA_H
+#define AVCODEC_ALAC_DATA_H
+
+#include <stdint.h>
+
+enum AlacRawDataBlockType {
+    /* At the moment, only SCE, CPE, LFE, and END are recognized. */
+    TYPE_SCE,
+    TYPE_CPE,
+    TYPE_CCE,
+    TYPE_LFE,
+    TYPE_DSE,
+    TYPE_PCE,
+    TYPE_FIL,
+    TYPE_END
+};
+
+#define ALAC_MAX_CHANNELS 8
+
+extern const uint8_t ff_alac_channel_layout_offsets[ALAC_MAX_CHANNELS][ALAC_MAX_CHANNELS];
+
+extern const uint64_t ff_alac_channel_layouts[ALAC_MAX_CHANNELS + 1];
+
+extern const enum AlacRawDataBlockType ff_alac_channel_elements[ALAC_MAX_CHANNELS][5];
+
+#endif /* AVCODEC_ALAC_DATA_H */