New experiment: Perceptual Vector Quantization from Daala
PVQ replaces the scalar quantizer and coefficient coding with a new
design originally developed in Daala. It currently depends on the
Daala entropy coder although it could be adapted to work with another
entropy coder if needed:
./configure --enable-experimental --enable-daala_ec --enable-pvq
The version of PVQ in this commit is adapted from the following
revision of Daala:
https://github.com/xiph/daala/commit/fb51c1ade6a31b668a0157d89de8f0a4493162a8
More information about PVQ:
- https://people.xiph.org/~jm/daala/pvq_demo/
- https://jmvalin.ca/papers/spie_pvq.pdf
The following files are copied as-is from Daala with minimal
adaptations, therefore we disable clang-format on those files
to make it easier to synchronize the AV1 and Daala codebases in the future:
av1/common/generic_code.c
av1/common/generic_code.h
av1/common/laplace_tables.c
av1/common/partition.c
av1/common/partition.h
av1/common/pvq.c
av1/common/pvq.h
av1/common/state.c
av1/common/state.h
av1/common/zigzag.h
av1/common/zigzag16.c
av1/common/zigzag32.c
av1/common/zigzag4.c
av1/common/zigzag64.c
av1/common/zigzag8.c
av1/decoder/decint.h
av1/decoder/generic_decoder.c
av1/decoder/laplace_decoder.c
av1/decoder/pvq_decoder.c
av1/decoder/pvq_decoder.h
av1/encoder/daala_compat_enc.c
av1/encoder/encint.h
av1/encoder/generic_encoder.c
av1/encoder/laplace_encoder.c
av1/encoder/pvq_encoder.c
av1/encoder/pvq_encoder.h
Known issues:
- Lossless mode is not supported, '--lossless=1' will give the same result as
'--end-usage=q --cq-level=1'.
- High bit depth is not supported by PVQ.
Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e
diff --git a/av1/common/zigzag.h b/av1/common/zigzag.h
new file mode 100644
index 0000000..295ed23
--- /dev/null
+++ b/av1/common/zigzag.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2001-2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+/* clang-format off */
+
+#if !defined(_zigzag_H)
+# define _zigzag_H (1)
+
+extern const unsigned char OD_ZIGZAG4_DCT_DCT[15][2];
+extern const unsigned char OD_ZIGZAG4_ADST_DCT[15][2];
+extern const unsigned char OD_ZIGZAG4_DCT_ADST[15][2];
+extern const unsigned char OD_ZIGZAG4_ADST_ADST[15][2];
+
+extern const unsigned char OD_ZIGZAG8_DCT_DCT[48][2];
+extern const unsigned char OD_ZIGZAG8_ADST_DCT[48][2];
+extern const unsigned char OD_ZIGZAG8_DCT_ADST[48][2];
+extern const unsigned char OD_ZIGZAG8_ADST_ADST[48][2];
+
+extern const unsigned char OD_ZIGZAG16_DCT_DCT[192][2];
+extern const unsigned char OD_ZIGZAG16_ADST_DCT[192][2];
+extern const unsigned char OD_ZIGZAG16_DCT_ADST[192][2];
+extern const unsigned char OD_ZIGZAG16_ADST_ADST[192][2];
+
+extern const unsigned char OD_ZIGZAG32_DCT_DCT[768][2];
+#endif
