2010-05-18 17:58:33 +02:00
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/*
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2010-09-09 14:16:39 +02:00
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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2010-05-18 17:58:33 +02:00
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*
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2010-06-18 18:39:21 +02:00
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* Use of this source code is governed by a BSD-style license
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2010-06-04 22:19:40 +02:00
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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2010-06-18 18:39:21 +02:00
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* in the file PATENTS. All contributing project authors may
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2010-06-04 22:19:40 +02:00
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* be found in the AUTHORS file in the root of the source tree.
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2010-05-18 17:58:33 +02:00
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*/
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#ifndef __INC_IDCT_H
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#define __INC_IDCT_H
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#define prototype_second_order(sym) \
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2012-07-14 00:21:29 +02:00
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void sym(short *input, short *output)
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2010-05-18 17:58:33 +02:00
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#define prototype_idct(sym) \
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2012-07-14 00:21:29 +02:00
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void sym(short *input, short *output, int pitch)
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2010-05-18 17:58:33 +02:00
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2010-05-28 20:28:12 +02:00
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#define prototype_idct_scalar_add(sym) \
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2012-07-14 00:21:29 +02:00
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void sym(short input, \
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unsigned char *pred, unsigned char *output, \
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int pitch, int stride)
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2010-05-18 17:58:33 +02:00
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#if ARCH_X86 || ARCH_X86_64
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#include "x86/idct_x86.h"
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#endif
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2012-08-03 20:25:35 +02:00
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#ifdef _MSC_VER
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/* TODO: remove these after integer implmementations are done */
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#define M_PI 3.14159265358979323846
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#define round(x) (((x)>0)? floor((x)+0.5): ceil((x)-0.5))
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#endif
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2010-05-18 17:58:33 +02:00
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#if ARCH_ARM
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#include "arm/idct_arm.h"
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#endif
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Add lossless compression mode.
This commit adds lossless compression capability to the experimental
branch. The lossless experiment can be enabled using --enable-lossless
in configure. When the experiment is enabled, the encoder will use
lossless compression mode by command line option --lossless, and the
decoder automatically recognizes a losslessly encoded clip and decodes
accordingly.
To achieve the lossless coding, this commit has changed the following:
1. To encode at lossless mode, encoder forces the use of unit
quantizer, i.e, Q 0, where effective quantization is 1. Encoder also
disables the usage of 8x8 transform and allows only 4x4 transform;
2. At Q 0, the first order 4x4 DCT/IDCT have been switched over
to a pair of forward and inverse Walsh-Hadamard Transform
(http://goo.gl/EIsfy), with proper scaling applied to match the range
of the original 4x4 DCT/IDCT pair;
3. At Q 0, the second order remains to use the previous
walsh-hadamard transform pair. However, to maintain the reversibility
in second order transform at Q 0, scaling down is applied to first
order DC coefficients prior to forward transform, and scaling up is
applied to the second order output prior to quantization. Symmetric
upscaling and downscaling are added around inverse second order
transform;
4. At lossless mode, encoder also disables a number of minor
features to ensure no loss is introduced, these features includes:
a. Trellis quantization optimization
b. Loop filtering
c. Aggressive zero-binning, rounding and zero-bin boosting
d. Mode based zero-bin boosting
Lossless coding test was performed on all clips within the derf set,
to verify that the commit has achieved lossless compression for all
clips. The average compression ratio is around 2.57 to 1.
(http://goo.gl/dEShs)
Change-Id: Ia3aba7dd09df40dd590f93b9aba134defbc64e34
2012-06-14 04:03:31 +02:00
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#if CONFIG_LOSSLESS
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#define WHT_UPSCALE_FACTOR 3
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#define Y2_WHT_UPSCALE_FACTOR 2
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#endif
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2012-02-29 02:11:12 +01:00
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2012-08-03 02:03:14 +02:00
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#if CONFIG_TX16X16
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#ifndef vp8_idct_idct16x16
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#define vp8_idct_idct16x16 vp8_short_idct16x16_c
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#endif
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extern prototype_idct(vp8_idct_idct16x16);
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#endif
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2011-02-14 23:18:18 +01:00
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#ifndef vp8_idct_idct8
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#define vp8_idct_idct8 vp8_short_idct8x8_c
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#endif
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extern prototype_idct(vp8_idct_idct8);
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#ifndef vp8_idct_idct8_1
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#define vp8_idct_idct8_1 vp8_short_idct8x8_1_c
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#endif
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extern prototype_idct(vp8_idct_idct8_1);
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#ifndef vp8_idct_ihaar2
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#define vp8_idct_ihaar2 vp8_short_ihaar2x2_c
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#endif
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extern prototype_idct(vp8_idct_ihaar2);
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#ifndef vp8_idct_ihaar2_1
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#define vp8_idct_ihaar2_1 vp8_short_ihaar2x2_1_c
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#endif
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extern prototype_idct(vp8_idct_ihaar2_1);
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#ifndef vp8_idct_idct1_scalar_add_8x8
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#define vp8_idct_idct1_scalar_add_8x8 vp8_dc_only_idct_add_8x8_c
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#endif
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extern prototype_idct_scalar_add(vp8_idct_idct1_scalar_add_8x8);
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2012-02-29 02:11:12 +01:00
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2011-02-14 23:18:18 +01:00
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2010-05-18 17:58:33 +02:00
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#ifndef vp8_idct_idct1
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#define vp8_idct_idct1 vp8_short_idct4x4llm_1_c
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#endif
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extern prototype_idct(vp8_idct_idct1);
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#ifndef vp8_idct_idct16
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#define vp8_idct_idct16 vp8_short_idct4x4llm_c
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#endif
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extern prototype_idct(vp8_idct_idct16);
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2010-05-28 20:28:12 +02:00
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#ifndef vp8_idct_idct1_scalar_add
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#define vp8_idct_idct1_scalar_add vp8_dc_only_idct_add_c
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2010-05-18 17:58:33 +02:00
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#endif
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2010-05-28 20:28:12 +02:00
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extern prototype_idct_scalar_add(vp8_idct_idct1_scalar_add);
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2010-05-18 17:58:33 +02:00
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2011-07-20 23:21:24 +02:00
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2010-05-18 17:58:33 +02:00
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#ifndef vp8_idct_iwalsh1
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#define vp8_idct_iwalsh1 vp8_short_inv_walsh4x4_1_c
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#endif
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extern prototype_second_order(vp8_idct_iwalsh1);
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#ifndef vp8_idct_iwalsh16
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#define vp8_idct_iwalsh16 vp8_short_inv_walsh4x4_c
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#endif
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extern prototype_second_order(vp8_idct_iwalsh16);
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Add lossless compression mode.
This commit adds lossless compression capability to the experimental
branch. The lossless experiment can be enabled using --enable-lossless
in configure. When the experiment is enabled, the encoder will use
lossless compression mode by command line option --lossless, and the
decoder automatically recognizes a losslessly encoded clip and decodes
accordingly.
To achieve the lossless coding, this commit has changed the following:
1. To encode at lossless mode, encoder forces the use of unit
quantizer, i.e, Q 0, where effective quantization is 1. Encoder also
disables the usage of 8x8 transform and allows only 4x4 transform;
2. At Q 0, the first order 4x4 DCT/IDCT have been switched over
to a pair of forward and inverse Walsh-Hadamard Transform
(http://goo.gl/EIsfy), with proper scaling applied to match the range
of the original 4x4 DCT/IDCT pair;
3. At Q 0, the second order remains to use the previous
walsh-hadamard transform pair. However, to maintain the reversibility
in second order transform at Q 0, scaling down is applied to first
order DC coefficients prior to forward transform, and scaling up is
applied to the second order output prior to quantization. Symmetric
upscaling and downscaling are added around inverse second order
transform;
4. At lossless mode, encoder also disables a number of minor
features to ensure no loss is introduced, these features includes:
a. Trellis quantization optimization
b. Loop filtering
c. Aggressive zero-binning, rounding and zero-bin boosting
d. Mode based zero-bin boosting
Lossless coding test was performed on all clips within the derf set,
to verify that the commit has achieved lossless compression for all
clips. The average compression ratio is around 2.57 to 1.
(http://goo.gl/dEShs)
Change-Id: Ia3aba7dd09df40dd590f93b9aba134defbc64e34
2012-06-14 04:03:31 +02:00
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#if CONFIG_LOSSLESS
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extern prototype_idct(vp8_short_inv_walsh4x4_x8_c);
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extern prototype_idct(vp8_short_inv_walsh4x4_1_x8_c);
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extern prototype_idct_scalar_add(vp8_dc_only_inv_walsh_add_c);
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extern prototype_second_order(vp8_short_inv_walsh4x4_lossless_c);
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extern prototype_second_order(vp8_short_inv_walsh4x4_1_lossless_c);
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#endif
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2012-08-06 23:48:11 +02:00
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#if CONFIG_HYBRIDTRANSFORM8X8 || CONFIG_HYBRIDTRANSFORM
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2012-06-25 21:26:09 +02:00
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#include "vp8/common/blockd.h"
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2012-08-06 23:48:11 +02:00
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void vp8_ihtllm_c(short *input, short *output, int pitch,
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TX_TYPE tx_type, int tx_dim);
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2012-06-25 21:26:09 +02:00
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#endif
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2010-05-18 17:58:33 +02:00
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typedef prototype_idct((*vp8_idct_fn_t));
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2010-05-28 20:28:12 +02:00
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typedef prototype_idct_scalar_add((*vp8_idct_scalar_add_fn_t));
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2010-05-18 17:58:33 +02:00
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typedef prototype_second_order((*vp8_second_order_fn_t));
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2012-07-14 00:21:29 +02:00
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typedef struct {
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vp8_idct_fn_t idct1;
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vp8_idct_fn_t idct16;
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vp8_idct_scalar_add_fn_t idct1_scalar_add;
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2010-05-18 17:58:33 +02:00
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2012-07-14 00:21:29 +02:00
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vp8_second_order_fn_t iwalsh1;
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vp8_second_order_fn_t iwalsh16;
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2011-02-14 23:18:18 +01:00
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2012-07-14 00:21:29 +02:00
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vp8_idct_fn_t idct8;
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vp8_idct_fn_t idct8_1;
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vp8_idct_scalar_add_fn_t idct1_scalar_add_8x8;
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vp8_idct_fn_t ihaar2;
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vp8_idct_fn_t ihaar2_1;
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2012-08-03 02:03:14 +02:00
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#if CONFIG_TX16X16
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vp8_idct_fn_t idct16x16;
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#endif
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2010-05-18 17:58:33 +02:00
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} vp8_idct_rtcd_vtable_t;
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#if CONFIG_RUNTIME_CPU_DETECT
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#define IDCT_INVOKE(ctx,fn) (ctx)->fn
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#else
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#define IDCT_INVOKE(ctx,fn) vp8_idct_##fn
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#endif
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#endif
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