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mss3: split DSP functions that are used in MTS2(MSS4) into separate file

tags/n1.0
Kostya Shishkov 13 years ago
parent
82f82ccfc8
commit
acfb6b6cf8
4 changed files with 163 additions and 92 deletions
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  1. +1
    -1
      libavcodec/Makefile
  2. +3
    -91
      libavcodec/mss3.c
  3. +114
    -0
      libavcodec/mss34dsp.c
  4. +45
    -0
      libavcodec/mss34dsp.h

+ 1
- 1
libavcodec/Makefile View File

@@ -292,7 +292,7 @@ OBJS-$(CONFIG_MSMPEG4V3_ENCODER) += msmpeg4.o msmpeg4enc.o msmpeg4data.o \
h263dec.o h263.o ituh263dec.o \
mpeg4videodec.o
OBJS-$(CONFIG_MSRLE_DECODER) += msrle.o msrledec.o
OBJS-$(CONFIG_MSA1_DECODER) += mss3.o
OBJS-$(CONFIG_MSA1_DECODER) += mss3.o mss34dsp.o
OBJS-$(CONFIG_MSS1_DECODER) += mss1.o
OBJS-$(CONFIG_MSVIDEO1_DECODER) += msvideo1.o
OBJS-$(CONFIG_MSZH_DECODER) += lcldec.o


+ 3
- 91
libavcodec/mss3.c View File

@@ -26,6 +26,7 @@

#include "avcodec.h"
#include "bytestream.h"
#include "mss34dsp.h"

#define HEADER_SIZE 27

@@ -119,28 +120,6 @@ typedef struct MSS3Context {
int hblock[16 * 16];
} MSS3Context;

static const uint8_t mss3_luma_quant[64] = {
16, 11, 10, 16, 24, 40, 51, 61,
12, 12, 14, 19, 26, 58, 60, 55,
14, 13, 16, 24, 40, 57, 69, 56,
14, 17, 22, 29, 51, 87, 80, 62,
18, 22, 37, 56, 68, 109, 103, 77,
24, 35, 55, 64, 81, 104, 113, 92,
49, 64, 78, 87, 103, 121, 120, 101,
72, 92, 95, 98, 112, 100, 103, 99
};

static const uint8_t mss3_chroma_quant[64] = {
17, 18, 24, 47, 99, 99, 99, 99,
18, 21, 26, 66, 99, 99, 99, 99,
24, 26, 56, 99, 99, 99, 99, 99,
47, 66, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99
};

static const uint8_t zigzag_scan[64] = {
0, 1, 8, 16, 9, 2, 3, 10,
17, 24, 32, 25, 18, 11, 4, 5,
@@ -586,58 +565,6 @@ static int decode_dct(RangeCoder *c, DCTBlockCoder *bc, int *block,
return pos == 64 ? 0 : -1;
}

#define DCT_TEMPLATE(blk, step, SOP, shift) \
const int t0 = -39409 * blk[7 * step] - 58980 * blk[1 * step]; \
const int t1 = 39410 * blk[1 * step] - 58980 * blk[7 * step]; \
const int t2 = -33410 * blk[5 * step] - 167963 * blk[3 * step]; \
const int t3 = 33410 * blk[3 * step] - 167963 * blk[5 * step]; \
const int t4 = blk[3 * step] + blk[7 * step]; \
const int t5 = blk[1 * step] + blk[5 * step]; \
const int t6 = 77062 * t4 + 51491 * t5; \
const int t7 = 77062 * t5 - 51491 * t4; \
const int t8 = 35470 * blk[2 * step] - 85623 * blk[6 * step]; \
const int t9 = 35470 * blk[6 * step] + 85623 * blk[2 * step]; \
const int tA = SOP(blk[0 * step] - blk[4 * step]); \
const int tB = SOP(blk[0 * step] + blk[4 * step]); \
\
blk[0 * step] = ( t1 + t6 + t9 + tB) >> shift; \
blk[1 * step] = ( t3 + t7 + t8 + tA) >> shift; \
blk[2 * step] = ( t2 + t6 - t8 + tA) >> shift; \
blk[3 * step] = ( t0 + t7 - t9 + tB) >> shift; \
blk[4 * step] = (-(t0 + t7) - t9 + tB) >> shift; \
blk[5 * step] = (-(t2 + t6) - t8 + tA) >> shift; \
blk[6 * step] = (-(t3 + t7) + t8 + tA) >> shift; \
blk[7 * step] = (-(t1 + t6) + t9 + tB) >> shift; \

#define SOP_ROW(a) ((a) << 16) + 0x2000
#define SOP_COL(a) ((a + 32) << 16)

static void dct_put(uint8_t *dst, int stride, int *block)
{
int i, j;
int *ptr;

ptr = block;
for (i = 0; i < 8; i++) {
DCT_TEMPLATE(ptr, 1, SOP_ROW, 13);
ptr += 8;
}

ptr = block;
for (i = 0; i < 8; i++) {
DCT_TEMPLATE(ptr, 8, SOP_COL, 22);
ptr++;
}

ptr = block;
for (j = 0; j < 8; j++) {
for (i = 0; i < 8; i++)
dst[i] = av_clip_uint8(ptr[i] + 128);
dst += stride;
ptr += 8;
}
}

static void decode_dct_block(RangeCoder *c, DCTBlockCoder *bc,
uint8_t *dst, int stride, int block_size,
int *block, int mb_x, int mb_y)
@@ -655,7 +582,7 @@ static void decode_dct_block(RangeCoder *c, DCTBlockCoder *bc,
c->got_error = 1;
return;
}
dct_put(dst + i * 8, stride, block);
ff_mss34_dct_put(dst + i * 8, stride, block);
}
dst += 8 * stride;
}
@@ -702,14 +629,6 @@ static void decode_haar_block(RangeCoder *c, HaarBlockCoder *hc,
}
}

static void gen_quant_mat(uint16_t *qmat, const uint8_t *ref, float scale)
{
int i;

for (i = 0; i < 64; i++)
qmat[i] = (uint16_t)(ref[i] * scale + 50.0) / 100;
}

static void reset_coders(MSS3Context *ctx, int quality)
{
int i, j;
@@ -726,15 +645,8 @@ static void reset_coders(MSS3Context *ctx, int quality)
for (j = 0; j < 125; j++)
model_reset(&ctx->image_coder[i].vq_model[j]);
if (ctx->dct_coder[i].quality != quality) {
float scale;
ctx->dct_coder[i].quality = quality;
if (quality > 50)
scale = 200.0f - 2 * quality;
else
scale = 5000.0f / quality;
gen_quant_mat(ctx->dct_coder[i].qmat,
i ? mss3_chroma_quant : mss3_luma_quant,
scale);
ff_mss34_gen_quant_mat(ctx->dct_coder[i].qmat, quality, !i);
}
memset(ctx->dct_coder[i].prev_dc, 0,
sizeof(*ctx->dct_coder[i].prev_dc) *


+ 114
- 0
libavcodec/mss34dsp.c View File

@@ -0,0 +1,114 @@
/*
* Common stuff for some Microsoft Screen codecs
* Copyright (C) 2012 Konstantin Shishkov
*
* 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
*/

#include <stdint.h>
#include "libavutil/common.h"
#include "mss34dsp.h"

static const uint8_t luma_quant[64] = {
16, 11, 10, 16, 24, 40, 51, 61,
12, 12, 14, 19, 26, 58, 60, 55,
14, 13, 16, 24, 40, 57, 69, 56,
14, 17, 22, 29, 51, 87, 80, 62,
18, 22, 37, 56, 68, 109, 103, 77,
24, 35, 55, 64, 81, 104, 113, 92,
49, 64, 78, 87, 103, 121, 120, 101,
72, 92, 95, 98, 112, 100, 103, 99
};

static const uint8_t chroma_quant[64] = {
17, 18, 24, 47, 99, 99, 99, 99,
18, 21, 26, 66, 99, 99, 99, 99,
24, 26, 56, 99, 99, 99, 99, 99,
47, 66, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99,
99, 99, 99, 99, 99, 99, 99, 99
};

void ff_mss34_gen_quant_mat(uint16_t *qmat, int quality, int luma)
{
int i;
const uint8_t *qsrc = luma ? luma_quant : chroma_quant;

if (quality >= 50) {
int scale = 200 - 2 * quality;

for (i = 0; i < 64; i++)
qmat[i] = (qsrc[i] * scale + 50) / 100;
} else {
for (i = 0; i < 64; i++)
qmat[i] = (5000 * qsrc[i] / quality + 50) / 100;
}
}

#define DCT_TEMPLATE(blk, step, SOP, shift) \
const int t0 = -39409 * blk[7 * step] - 58980 * blk[1 * step]; \
const int t1 = 39410 * blk[1 * step] - 58980 * blk[7 * step]; \
const int t2 = -33410 * blk[5 * step] - 167963 * blk[3 * step]; \
const int t3 = 33410 * blk[3 * step] - 167963 * blk[5 * step]; \
const int t4 = blk[3 * step] + blk[7 * step]; \
const int t5 = blk[1 * step] + blk[5 * step]; \
const int t6 = 77062 * t4 + 51491 * t5; \
const int t7 = 77062 * t5 - 51491 * t4; \
const int t8 = 35470 * blk[2 * step] - 85623 * blk[6 * step]; \
const int t9 = 35470 * blk[6 * step] + 85623 * blk[2 * step]; \
const int tA = SOP(blk[0 * step] - blk[4 * step]); \
const int tB = SOP(blk[0 * step] + blk[4 * step]); \
\
blk[0 * step] = ( t1 + t6 + t9 + tB) >> shift; \
blk[1 * step] = ( t3 + t7 + t8 + tA) >> shift; \
blk[2 * step] = ( t2 + t6 - t8 + tA) >> shift; \
blk[3 * step] = ( t0 + t7 - t9 + tB) >> shift; \
blk[4 * step] = (-(t0 + t7) - t9 + tB) >> shift; \
blk[5 * step] = (-(t2 + t6) - t8 + tA) >> shift; \
blk[6 * step] = (-(t3 + t7) + t8 + tA) >> shift; \
blk[7 * step] = (-(t1 + t6) + t9 + tB) >> shift; \

#define SOP_ROW(a) ((a) << 16) + 0x2000
#define SOP_COL(a) ((a + 32) << 16)

void ff_mss34_dct_put(uint8_t *dst, int stride, int *block)
{
int i, j;
int *ptr;

ptr = block;
for (i = 0; i < 8; i++) {
DCT_TEMPLATE(ptr, 1, SOP_ROW, 13);
ptr += 8;
}

ptr = block;
for (i = 0; i < 8; i++) {
DCT_TEMPLATE(ptr, 8, SOP_COL, 22);
ptr++;
}

ptr = block;
for (j = 0; j < 8; j++) {
for (i = 0; i < 8; i++)
dst[i] = av_clip_uint8(ptr[i] + 128);
dst += stride;
ptr += 8;
}
}

+ 45
- 0
libavcodec/mss34dsp.h View File

@@ -0,0 +1,45 @@
/*
* Common stuff for some Microsoft Screen codecs
* Copyright (C) 2012 Konstantin Shishkov
*
* 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_MSS34DSP_H
#define AVCODEC_MSS34DSP_H

#include <stdint.h>

/**
* Generate quantisation matrix for given quality.
*
* @param qmat destination matrix
* @param quality quality setting (1-100)
* @param luma generate quantisation matrix for luma or chroma
*/
void ff_mss34_gen_quant_mat(uint16_t *qmat, int quality, int luma);

/**
* Transform and output DCT block.
*
* @param dst output plane
* @param stride output plane stride
* @param block block to transform and output
*/
void ff_mss34_dct_put(uint8_t *dst, int stride, int *block);

#endif /* AVCODEC_MSS34DSP_H */

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