making act segmenter

1 files changed, 323 insertions, 0 deletions

diff --git a/ffmpeg/libavcodec/h264idct_template.c b/ffmpeg/libavcodec/h264idct_template.c
new file mode 100644
index 0000000..9f16e1d
--- /dev/null
+++ b/ffmpeg/libavcodec/h264idct_template.c
@@ -0,0 +1,323 @@
+/*
+ * H.264 IDCT
+ * Copyright (c) 2004-2011 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * H.264 IDCT.
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#include "bit_depth_template.c"
+#include "libavutil/common.h"
+#include "h264.h"
+
+void FUNCC(ff_h264_idct_add)(uint8_t *_dst, int16_t *_block, int stride)
+{
+    int i;
+    pixel *dst = (pixel*)_dst;
+    dctcoef *block = (dctcoef*)_block;
+    stride >>= sizeof(pixel)-1;
+
+    block[0] += 1 << 5;
+
+    for(i=0; i<4; i++){
+        const int z0=  block[i + 4*0]     +  block[i + 4*2];
+        const int z1=  block[i + 4*0]     -  block[i + 4*2];
+        const int z2= (block[i + 4*1]>>1) -  block[i + 4*3];
+        const int z3=  block[i + 4*1]     + (block[i + 4*3]>>1);
+
+        block[i + 4*0]= z0 + z3;
+        block[i + 4*1]= z1 + z2;
+        block[i + 4*2]= z1 - z2;
+        block[i + 4*3]= z0 - z3;
+    }
+
+    for(i=0; i<4; i++){
+        const int z0=  block[0 + 4*i]     +  block[2 + 4*i];
+        const int z1=  block[0 + 4*i]     -  block[2 + 4*i];
+        const int z2= (block[1 + 4*i]>>1) -  block[3 + 4*i];
+        const int z3=  block[1 + 4*i]     + (block[3 + 4*i]>>1);
+
+        dst[i + 0*stride]= av_clip_pixel(dst[i + 0*stride] + ((z0 + z3) >> 6));
+        dst[i + 1*stride]= av_clip_pixel(dst[i + 1*stride] + ((z1 + z2) >> 6));
+        dst[i + 2*stride]= av_clip_pixel(dst[i + 2*stride] + ((z1 - z2) >> 6));
+        dst[i + 3*stride]= av_clip_pixel(dst[i + 3*stride] + ((z0 - z3) >> 6));
+    }
+
+    memset(block, 0, 16 * sizeof(dctcoef));
+}
+
+void FUNCC(ff_h264_idct8_add)(uint8_t *_dst, int16_t *_block, int stride){
+    int i;
+    pixel *dst = (pixel*)_dst;
+    dctcoef *block = (dctcoef*)_block;
+    stride >>= sizeof(pixel)-1;
+
+    block[0] += 32;
+
+    for( i = 0; i < 8; i++ )
+    {
+        const int a0 =  block[i+0*8] + block[i+4*8];
+        const int a2 =  block[i+0*8] - block[i+4*8];
+        const int a4 = (block[i+2*8]>>1) - block[i+6*8];
+        const int a6 = (block[i+6*8]>>1) + block[i+2*8];
+
+        const int b0 = a0 + a6;
+        const int b2 = a2 + a4;
+        const int b4 = a2 - a4;
+        const int b6 = a0 - a6;
+
+        const int a1 = -block[i+3*8] + block[i+5*8] - block[i+7*8] - (block[i+7*8]>>1);
+        const int a3 =  block[i+1*8] + block[i+7*8] - block[i+3*8] - (block[i+3*8]>>1);
+        const int a5 = -block[i+1*8] + block[i+7*8] + block[i+5*8] + (block[i+5*8]>>1);
+        const int a7 =  block[i+3*8] + block[i+5*8] + block[i+1*8] + (block[i+1*8]>>1);
+
+        const int b1 = (a7>>2) + a1;
+        const int b3 =  a3 + (a5>>2);
+        const int b5 = (a3>>2) - a5;
+        const int b7 =  a7 - (a1>>2);
+
+        block[i+0*8] = b0 + b7;
+        block[i+7*8] = b0 - b7;
+        block[i+1*8] = b2 + b5;
+        block[i+6*8] = b2 - b5;
+        block[i+2*8] = b4 + b3;
+        block[i+5*8] = b4 - b3;
+        block[i+3*8] = b6 + b1;
+        block[i+4*8] = b6 - b1;
+    }
+    for( i = 0; i < 8; i++ )
+    {
+        const int a0 =  block[0+i*8] + block[4+i*8];
+        const int a2 =  block[0+i*8] - block[4+i*8];
+        const int a4 = (block[2+i*8]>>1) - block[6+i*8];
+        const int a6 = (block[6+i*8]>>1) + block[2+i*8];
+
+        const int b0 = a0 + a6;
+        const int b2 = a2 + a4;
+        const int b4 = a2 - a4;
+        const int b6 = a0 - a6;
+
+        const int a1 = -block[3+i*8] + block[5+i*8] - block[7+i*8] - (block[7+i*8]>>1);
+        const int a3 =  block[1+i*8] + block[7+i*8] - block[3+i*8] - (block[3+i*8]>>1);
+        const int a5 = -block[1+i*8] + block[7+i*8] + block[5+i*8] + (block[5+i*8]>>1);
+        const int a7 =  block[3+i*8] + block[5+i*8] + block[1+i*8] + (block[1+i*8]>>1);
+
+        const int b1 = (a7>>2) + a1;
+        const int b3 =  a3 + (a5>>2);
+        const int b5 = (a3>>2) - a5;
+        const int b7 =  a7 - (a1>>2);
+
+        dst[i + 0*stride] = av_clip_pixel( dst[i + 0*stride] + ((b0 + b7) >> 6) );
+        dst[i + 1*stride] = av_clip_pixel( dst[i + 1*stride] + ((b2 + b5) >> 6) );
+        dst[i + 2*stride] = av_clip_pixel( dst[i + 2*stride] + ((b4 + b3) >> 6) );
+        dst[i + 3*stride] = av_clip_pixel( dst[i + 3*stride] + ((b6 + b1) >> 6) );
+        dst[i + 4*stride] = av_clip_pixel( dst[i + 4*stride] + ((b6 - b1) >> 6) );
+        dst[i + 5*stride] = av_clip_pixel( dst[i + 5*stride] + ((b4 - b3) >> 6) );
+        dst[i + 6*stride] = av_clip_pixel( dst[i + 6*stride] + ((b2 - b5) >> 6) );
+        dst[i + 7*stride] = av_clip_pixel( dst[i + 7*stride] + ((b0 - b7) >> 6) );
+    }
+
+    memset(block, 0, 64 * sizeof(dctcoef));
+}
+
+// assumes all AC coefs are 0
+void FUNCC(ff_h264_idct_dc_add)(uint8_t *_dst, int16_t *_block, int stride){
+    int i, j;
+    pixel *dst = (pixel*)_dst;
+    dctcoef *block = (dctcoef*)_block;
+    int dc = (block[0] + 32) >> 6;
+    stride >>= sizeof(pixel)-1;
+    block[0] = 0;
+    for( j = 0; j < 4; j++ )
+    {
+        for( i = 0; i < 4; i++ )
+            dst[i] = av_clip_pixel( dst[i] + dc );
+        dst += stride;
+    }
+}
+
+void FUNCC(ff_h264_idct8_dc_add)(uint8_t *_dst, int16_t *_block, int stride){
+    int i, j;
+    pixel *dst = (pixel*)_dst;
+    dctcoef *block = (dctcoef*)_block;
+    int dc = (block[0] + 32) >> 6;
+    block[0] = 0;
+    stride >>= sizeof(pixel)-1;
+    for( j = 0; j < 8; j++ )
+    {
+        for( i = 0; i < 8; i++ )
+            dst[i] = av_clip_pixel( dst[i] + dc );
+        dst += stride;
+    }
+}
+
+void FUNCC(ff_h264_idct_add16)(uint8_t *dst, const int *block_offset, int16_t *block, int stride, const uint8_t nnzc[15*8]){
+    int i;
+    for(i=0; i<16; i++){
+        int nnz = nnzc[ scan8[i] ];
+        if(nnz){
+            if(nnz==1 && ((dctcoef*)block)[i*16]) FUNCC(ff_h264_idct_dc_add)(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
+            else                                  FUNCC(ff_h264_idct_add   )(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
+        }
+    }
+}
+
+void FUNCC(ff_h264_idct_add16intra)(uint8_t *dst, const int *block_offset, int16_t *block, int stride, const uint8_t nnzc[15*8]){
+    int i;
+    for(i=0; i<16; i++){
+        if(nnzc[ scan8[i] ])             FUNCC(ff_h264_idct_add   )(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
+        else if(((dctcoef*)block)[i*16]) FUNCC(ff_h264_idct_dc_add)(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
+    }
+}
+
+void FUNCC(ff_h264_idct8_add4)(uint8_t *dst, const int *block_offset, int16_t *block, int stride, const uint8_t nnzc[15*8]){
+    int i;
+    for(i=0; i<16; i+=4){
+        int nnz = nnzc[ scan8[i] ];
+        if(nnz){
+            if(nnz==1 && ((dctcoef*)block)[i*16]) FUNCC(ff_h264_idct8_dc_add)(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
+            else                                  FUNCC(ff_h264_idct8_add   )(dst + block_offset[i], block + i*16*sizeof(pixel), stride);
+        }
+    }
+}
+
+void FUNCC(ff_h264_idct_add8)(uint8_t **dest, const int *block_offset, int16_t *block, int stride, const uint8_t nnzc[15*8]){
+    int i, j;
+    for(j=1; j<3; j++){
+        for(i=j*16; i<j*16+4; i++){
+            if(nnzc[ scan8[i] ])
+                FUNCC(ff_h264_idct_add   )(dest[j-1] + block_offset[i], block + i*16*sizeof(pixel), stride);
+            else if(((dctcoef*)block)[i*16])
+                FUNCC(ff_h264_idct_dc_add)(dest[j-1] + block_offset[i], block + i*16*sizeof(pixel), stride);
+        }
+    }
+}
+
+void FUNCC(ff_h264_idct_add8_422)(uint8_t **dest, const int *block_offset, int16_t *block, int stride, const uint8_t nnzc[15*8]){
+    int i, j;
+
+    for(j=1; j<3; j++){
+        for(i=j*16; i<j*16+4; i++){
+            if(nnzc[ scan8[i] ])
+                FUNCC(ff_h264_idct_add   )(dest[j-1] + block_offset[i], block + i*16*sizeof(pixel), stride);
+            else if(((dctcoef*)block)[i*16])
+                FUNCC(ff_h264_idct_dc_add)(dest[j-1] + block_offset[i], block + i*16*sizeof(pixel), stride);
+        }
+    }
+
+    for(j=1; j<3; j++){
+        for(i=j*16+4; i<j*16+8; i++){
+            if(nnzc[ scan8[i+4] ])
+                FUNCC(ff_h264_idct_add   )(dest[j-1] + block_offset[i+4], block + i*16*sizeof(pixel), stride);
+            else if(((dctcoef*)block)[i*16])
+                FUNCC(ff_h264_idct_dc_add)(dest[j-1] + block_offset[i+4], block + i*16*sizeof(pixel), stride);
+        }
+    }
+}
+
+/**
+ * IDCT transforms the 16 dc values and dequantizes them.
+ * @param qmul quantization parameter
+ */
+void FUNCC(ff_h264_luma_dc_dequant_idct)(int16_t *_output, int16_t *_input, int qmul){
+#define stride 16
+    int i;
+    int temp[16];
+    static const uint8_t x_offset[4]={0, 2*stride, 8*stride, 10*stride};
+    dctcoef *input = (dctcoef*)_input;
+    dctcoef *output = (dctcoef*)_output;
+
+    for(i=0; i<4; i++){
+        const int z0= input[4*i+0] + input[4*i+1];
+        const int z1= input[4*i+0] - input[4*i+1];
+        const int z2= input[4*i+2] - input[4*i+3];
+        const int z3= input[4*i+2] + input[4*i+3];
+
+        temp[4*i+0]= z0+z3;
+        temp[4*i+1]= z0-z3;
+        temp[4*i+2]= z1-z2;
+        temp[4*i+3]= z1+z2;
+    }
+
+    for(i=0; i<4; i++){
+        const int offset= x_offset[i];
+        const int z0= temp[4*0+i] + temp[4*2+i];
+        const int z1= temp[4*0+i] - temp[4*2+i];
+        const int z2= temp[4*1+i] - temp[4*3+i];
+        const int z3= temp[4*1+i] + temp[4*3+i];
+
+        output[stride* 0+offset]= ((((z0 + z3)*qmul + 128 ) >> 8));
+        output[stride* 1+offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
+        output[stride* 4+offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
+        output[stride* 5+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
+    }
+#undef stride
+}
+
+void FUNCC(ff_h264_chroma422_dc_dequant_idct)(int16_t *_block, int qmul){
+    const int stride= 16*2;
+    const int xStride= 16;
+    int i;
+    int temp[8];
+    static const uint8_t x_offset[2]={0, 16};
+    dctcoef *block = (dctcoef*)_block;
+
+    for(i=0; i<4; i++){
+        temp[2*i+0] = block[stride*i + xStride*0] + block[stride*i + xStride*1];
+        temp[2*i+1] = block[stride*i + xStride*0] - block[stride*i + xStride*1];
+    }
+
+    for(i=0; i<2; i++){
+        const int offset= x_offset[i];
+        const int z0= temp[2*0+i] + temp[2*2+i];
+        const int z1= temp[2*0+i] - temp[2*2+i];
+        const int z2= temp[2*1+i] - temp[2*3+i];
+        const int z3= temp[2*1+i] + temp[2*3+i];
+
+        block[stride*0+offset]= ((z0 + z3)*qmul + 128) >> 8;
+        block[stride*1+offset]= ((z1 + z2)*qmul + 128) >> 8;
+        block[stride*2+offset]= ((z1 - z2)*qmul + 128) >> 8;
+        block[stride*3+offset]= ((z0 - z3)*qmul + 128) >> 8;
+    }
+}
+
+void FUNCC(ff_h264_chroma_dc_dequant_idct)(int16_t *_block, int qmul){
+    const int stride= 16*2;
+    const int xStride= 16;
+    int a,b,c,d,e;
+    dctcoef *block = (dctcoef*)_block;
+
+    a= block[stride*0 + xStride*0];
+    b= block[stride*0 + xStride*1];
+    c= block[stride*1 + xStride*0];
+    d= block[stride*1 + xStride*1];
+
+    e= a-b;
+    a= a+b;
+    b= c-d;
+    c= c+d;
+
+    block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
+    block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
+    block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
+    block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
+}