FFmpeg coverage

Directory:	../../../ffmpeg/
File:	src/libavcodec/vc2enc_dwt.c
Date:	2025-11-03 14:06:37

	Exec	Total	Coverage
Lines:	152	156	97.4%
Functions:	7	8	87.5%
Branches:	66	68	97.1%

  
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      /*
    
       * Copyright (C) 2007 Marco Gerards <marco@gnu.org>
    
       * Copyright (C) 2016 Open Broadcast Systems Ltd.
    
       * Author        2016 Rostislav Pehlivanov <atomnuker@gmail.com>
    
       *
    
       * 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
    
       */
    
      #include "libavutil/attributes.h"
    
      #include "libavutil/mem.h"
    
      #include "vc2enc_dwt.h"
    
      /* Since the transforms spit out interleaved coefficients, this function
    
       * rearranges the coefficients into the more traditional subdivision,
    
       * making it easier to encode and perform another level. */
    
      1980
      static av_always_inline void deinterleave(dwtcoef *linell, ptrdiff_t stride,
    
                                                int width, int height, dwtcoef *synthl)
    
      {
    
          int x, y;
    
      1980
          ptrdiff_t synthw = width << 1;
    
      1980
          dwtcoef *linehl = linell + width;
    
      1980
          dwtcoef *linelh = linell + height*stride;
    
      1980
          dwtcoef *linehh = linelh + width;
    
          /* Deinterleave the coefficients. */
    
        2/2✓ Branch 0 taken 121500 times.
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      123480
          for (y = 0; y < height; y++) {
    
        2/2✓ Branch 0 taken 11865150 times.
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      11986650
              for (x = 0; x < width; x++) {
    
      11865150
                  linell[x] = synthl[(x << 1)];
    
      11865150
                  linehl[x] = synthl[(x << 1) + 1];
    
      11865150
                  linelh[x] = synthl[(x << 1) + synthw];
    
      11865150
                  linehh[x] = synthl[(x << 1) + synthw + 1];
    
              }
    
      121500
              synthl += synthw << 1;
    
      121500
              linell += stride;
    
      121500
              linelh += stride;
    
      121500
              linehl += stride;
    
      121500
              linehh += stride;
    
          }
    
      1980
      }
    
      1620
      static void vc2_subband_dwt_97(VC2TransformContext *t, dwtcoef *data,
    
                                     ptrdiff_t stride, int width, int height)
    
      {
    
          int x, y;
    
      1620
          dwtcoef *datal = data, *synth = t->buffer, *synthl = synth;
    
      1620
          const ptrdiff_t synth_width  = width  << 1;
    
      1620
          const ptrdiff_t synth_height = height << 1;
    
          /*
    
           * Shift in one bit that is used for additional precision and copy
    
           * the data to the buffer.
    
           */
    
        2/2✓ Branch 0 taken 194400 times.
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      196020
          for (y = 0; y < synth_height; y++) {
    
        2/2✓ Branch 0 taken 39382200 times.
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      39576600
              for (x = 0; x < synth_width; x++)
    
      39382200
                  synthl[x] = datal[x] * 2;
    
      194400
              synthl += synth_width;
    
      194400
              datal += stride;
    
          }
    
          /* Horizontal synthesis. */
    
      1620
          synthl = synth;
    
        2/2✓ Branch 0 taken 194400 times.
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      196020
          for (y = 0; y < synth_height; y++) {
    
              /* Lifting stage 2. */
    
      194400
              synthl[1] -= (8*synthl[0] + 9*synthl[2] - synthl[4] + 8) >> 4;
    
        2/2✓ Branch 0 taken 19107900 times.
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      19302300
              for (x = 1; x < width - 2; x++)
    
      19107900
                  synthl[2*x + 1] -= (9*synthl[2*x] + 9*synthl[2*x + 2] - synthl[2*x + 4] -
    
      19107900
                                      synthl[2 * x - 2] + 8) >> 4;
    
      194400
              synthl[synth_width - 1] -= (17*synthl[synth_width - 2] -
    
      194400
                                          synthl[synth_width - 4] + 8) >> 4;
    
      194400
              synthl[synth_width - 3] -= (8*synthl[synth_width - 2] +
    
      194400
                                          9*synthl[synth_width - 4] -
    
      194400
                                          synthl[synth_width - 6] + 8) >> 4;
    
              /* Lifting stage 1. */
    
      194400
              synthl[0] += (synthl[1] + synthl[1] + 2) >> 2;
    
        2/2✓ Branch 0 taken 19302300 times.
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      19496700
              for (x = 1; x < width - 1; x++)
    
      19302300
                  synthl[2*x] += (synthl[2*x - 1] + synthl[2*x + 1] + 2) >> 2;
    
      194400
              synthl[synth_width - 2] += (synthl[synth_width - 3] +
    
      194400
                                          synthl[synth_width - 1] + 2) >> 2;
    
      194400
              synthl += synth_width;
    
          }
    
          /* Vertical synthesis: Lifting stage 2. */
    
      1620
          synthl = synth + synth_width;
    
        2/2✓ Branch 0 taken 207900 times.
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      209520
          for (x = 0; x < synth_width; x++)
    
      207900
              synthl[x] -= (8*synthl[x - synth_width] + 9*synthl[x + synth_width] -
    
      207900
                            synthl[x + 3 * synth_width] + 8) >> 4;
    
      1620
          synthl = synth + (synth_width << 1);
    
        2/2✓ Branch 0 taken 92340 times.
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      93960
          for (y = 1; y < height - 2; y++) {
    
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      19159740
              for (x = 0; x < synth_width; x++)
    
      19067400
                  synthl[x + synth_width] -= (9*synthl[x] +
    
      19067400
                                              9*synthl[x + 2 * synth_width] -
    
      19067400
                                              synthl[x - 2 * synth_width] -
    
      19067400
                                              synthl[x + 4 * synth_width] + 8) >> 4;
    
      92340
              synthl += synth_width << 1;
    
          }
    
      1620
          synthl = synth + (synth_height - 1) * synth_width;
    
        2/2✓ Branch 0 taken 207900 times.
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      209520
          for (x = 0; x < synth_width; x++) {
    
      207900
              synthl[x] -= (17*synthl[x - synth_width] -
    
      207900
                            synthl[x - 3*synth_width] + 8) >> 4;
    
      207900
                            synthl[x - 2*synth_width] -= (9*synthl[x - 3*synth_width] +
    
      207900
                            8*synthl[x - 1*synth_width] - synthl[x - 5*synth_width] + 8) >> 4;
    
          }
    
          /* Vertical synthesis: Lifting stage 1. */
    
      1620
          synthl = synth;
    
        2/2✓ Branch 0 taken 207900 times.
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      209520
          for (x = 0; x < synth_width; x++)
    
      207900
              synthl[x] += (synthl[x + synth_width] + synthl[x + synth_width] + 2) >> 2;
    
      1620
          synthl = synth + (synth_width << 1);
    
        2/2✓ Branch 0 taken 93960 times.
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      95580
          for (y = 1; y < height - 1; y++) {
    
        2/2✓ Branch 0 taken 19275300 times.
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      19369260
              for (x = 0; x < synth_width; x++)
    
      19275300
                  synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;
    
      93960
              synthl += synth_width << 1;
    
          }
    
      1620
          synthl = synth + (synth_height - 2) * synth_width;
    
        2/2✓ Branch 0 taken 207900 times.
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      209520
          for (x = 0; x < synth_width; x++)
    
      207900
              synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;
    
      1620
          deinterleave(data, stride, width, height, synth);
    
      1620
      }
    
      180
      static void vc2_subband_dwt_53(VC2TransformContext *t, dwtcoef *data,
    
                                     ptrdiff_t stride, int width, int height)
    
      {
    
          int x, y;
    
      180
          dwtcoef *synth = t->buffer, *synthl = synth, *datal = data;
    
      180
          const ptrdiff_t synth_width  = width  << 1;
    
      180
          const ptrdiff_t synth_height = height << 1;
    
          /*
    
           * Shift in one bit that is used for additional precision and copy
    
           * the data to the buffer.
    
           */
    
        2/2✓ Branch 0 taken 24300 times.
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      24480
          for (y = 0; y < synth_height; y++) {
    
        2/2✓ Branch 0 taken 4039200 times.
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      4063500
              for (x = 0; x < synth_width; x++)
    
      4039200
                  synthl[x] = datal[x] * 2;
    
      24300
              synthl += synth_width;
    
      24300
              datal  += stride;
    
          }
    
          /* Horizontal synthesis. */
    
      180
          synthl = synth;
    
        2/2✓ Branch 0 taken 24300 times.
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      24480
          for (y = 0; y < synth_height; y++) {
    
              /* Lifting stage 2. */
    
        2/2✓ Branch 0 taken 1995300 times.
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      2019600
              for (x = 0; x < width - 1; x++)
    
      1995300
                  synthl[2 * x + 1] -= (synthl[2 * x] + synthl[2 * x + 2] + 1) >> 1;
    
      24300
              synthl[synth_width - 1] -= (2*synthl[synth_width - 2] + 1) >> 1;
    
              /* Lifting stage 1. */
    
      24300
              synthl[0] += (2*synthl[1] + 2) >> 2;
    
        2/2✓ Branch 0 taken 1971000 times.
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      1995300
              for (x = 1; x < width - 1; x++)
    
      1971000
                  synthl[2 * x] += (synthl[2 * x - 1] + synthl[2 * x + 1] + 2) >> 2;
    
      24300
              synthl[synth_width - 2] += (synthl[synth_width - 3] + synthl[synth_width - 1] + 2) >> 2;
    
      24300
              synthl += synth_width;
    
          }
    
          /* Vertical synthesis: Lifting stage 2. */
    
      180
          synthl = synth + synth_width;
    
        2/2✓ Branch 0 taken 19800 times.
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      19980
          for (x = 0; x < synth_width; x++)
    
      19800
              synthl[x] -= (synthl[x - synth_width] + synthl[x + synth_width] + 1) >> 1;
    
      180
          synthl = synth + (synth_width << 1);
    
        2/2✓ Branch 0 taken 11790 times.
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      11970
          for (y = 1; y < height - 1; y++) {
    
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      1991790
              for (x = 0; x < synth_width; x++)
    
      1980000
                  synthl[x + synth_width] -= (synthl[x] + synthl[x + synth_width * 2] + 1) >> 1;
    
      11790
              synthl += (synth_width << 1);
    
          }
    
      180
          synthl = synth + (synth_height - 1) * synth_width;
    
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      19980
          for (x = 0; x < synth_width; x++)
    
      19800
              synthl[x] -= (2*synthl[x - synth_width] + 1) >> 1;
    
          /* Vertical synthesis: Lifting stage 1. */
    
      180
          synthl = synth;
    
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      19980
          for (x = 0; x < synth_width; x++)
    
      19800
              synthl[x] += (2*synthl[synth_width + x] + 2) >> 2;
    
      180
          synthl = synth + (synth_width << 1);
    
        2/2✓ Branch 0 taken 11790 times.
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      11970
          for (y = 1; y < height - 1; y++) {
    
        2/2✓ Branch 0 taken 1980000 times.
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      1991790
              for (x = 0; x < synth_width; x++)
    
      1980000
                  synthl[x] += (synthl[x + synth_width] + synthl[x - synth_width] + 2) >> 2;
    
      11790
              synthl += (synth_width << 1);
    
          }
    
      180
          synthl = synth + (synth_height - 2)*synth_width;
    
        2/2✓ Branch 0 taken 19800 times.
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      19980
          for (x = 0; x < synth_width; x++)
    
      19800
              synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;
    
      180
          deinterleave(data, stride, width, height, synth);
    
      180
      }
    
      180
      static av_always_inline void dwt_haar(VC2TransformContext *t, dwtcoef *data,
    
                                            ptrdiff_t stride, int width, int height,
    
                                            const int s)
    
      {
    
          int x, y;
    
      180
          dwtcoef *synth = t->buffer, *synthl = synth, *datal = data;
    
      180
          const ptrdiff_t synth_width  = width  << 1;
    
      180
          const ptrdiff_t synth_height = height << 1;
    
          /* Horizontal synthesis. */
    
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      24480
          for (y = 0; y < synth_height; y++) {
    
        2/2✓ Branch 0 taken 2019600 times.
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      2043900
              for (x = 0; x < synth_width; x += 2) {
    
      2019600
                  synthl[y*synth_width + x + 1] = (datal[y*stride + x + 1] - datal[y*stride + x]) * (1 << s);
    
      2019600
                  synthl[y*synth_width + x] = datal[y*stride + x + 0] * (1 << s) +
    
      2019600
                                              ((synthl[y*synth_width + x + 1] + 1) >> 1);
    
              }
    
          }
    
          /* Vertical synthesis. */
    
        2/2✓ Branch 0 taken 19800 times.
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      19980
          for (x = 0; x < synth_width; x++) {
    
        2/2✓ Branch 0 taken 2019600 times.
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      2039400
              for (y = 0; y < synth_height; y += 2) {
    
      2019600
                  synthl[(y + 1)*synth_width + x] = synthl[(y + 1)*synth_width + x] -
    
      2019600
                                                    synthl[y*synth_width + x];
    
      2019600
                  synthl[y*synth_width + x] = synthl[y*synth_width + x] +
    
      2019600
                                              ((synthl[(y + 1)*synth_width + x] + 1) >> 1);
    
              }
    
          }
    
      180
          deinterleave(data, stride, width, height, synth);
    
      180
      }
    
      ✗
      static void vc2_subband_dwt_haar(VC2TransformContext *t, dwtcoef *data,
    
                                       ptrdiff_t stride, int width, int height)
    
      {
    
      ✗
          dwt_haar(t, data, stride, width, height, 0);
    
      ✗
      }
    
      180
      static void vc2_subband_dwt_haar_shift(VC2TransformContext *t, dwtcoef *data,
    
                                             ptrdiff_t stride, int width, int height)
    
      {
    
      180
          dwt_haar(t, data, stride, width, height, 1);
    
      180
      }
    
      99
      av_cold int ff_vc2enc_init_transforms(VC2TransformContext *s, int p_stride,
    
                                            int p_height, int slice_w, int slice_h)
    
      {
    
      99
          s->vc2_subband_dwt[VC2_TRANSFORM_9_7]    = vc2_subband_dwt_97;
    
      99
          s->vc2_subband_dwt[VC2_TRANSFORM_5_3]    = vc2_subband_dwt_53;
    
      99
          s->vc2_subband_dwt[VC2_TRANSFORM_HAAR]   = vc2_subband_dwt_haar;
    
      99
          s->vc2_subband_dwt[VC2_TRANSFORM_HAAR_S] = vc2_subband_dwt_haar_shift;
    
          /* Pad by the slice size, only matters for non-Haar wavelets */
    
      99
          s->buffer = av_calloc((p_stride + slice_w)*(p_height + slice_h), sizeof(dwtcoef));
    
        1/2✗ Branch 0 not taken.
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      99
          if (!s->buffer)
    
      ✗
              return 1;
    
      99
          s->padding = (slice_h >> 1)*p_stride + (slice_w >> 1);
    
      99
          s->buffer += s->padding;
    
      99
          return 0;
    
      }
    
      99
      av_cold void ff_vc2enc_free_transforms(VC2TransformContext *s)
    
      {
    
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      99
          if (s->buffer) {
    
      99
              av_free(s->buffer - s->padding);
    
      99
              s->buffer = NULL;
    
          }
    
      99
      }

Line	Branch	Exec	Source
1			/*
2			* Copyright (C) 2007 Marco Gerards <marco@gnu.org>
3			* Copyright (C) 2016 Open Broadcast Systems Ltd.
4			* Author 2016 Rostislav Pehlivanov <atomnuker@gmail.com>
5			*
6			* This file is part of FFmpeg.
7			*
8			* FFmpeg is free software; you can redistribute it and/or
9			* modify it under the terms of the GNU Lesser General Public
10			* License as published by the Free Software Foundation; either
11			* version 2.1 of the License, or (at your option) any later version.
12			*
13			* FFmpeg is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16			* Lesser General Public License for more details.
17			*
18			* You should have received a copy of the GNU Lesser General Public
19			* License along with FFmpeg; if not, write to the Free Software
20			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21			*/
22
23			#include "libavutil/attributes.h"
24			#include "libavutil/mem.h"
25			#include "vc2enc_dwt.h"
26
27			/* Since the transforms spit out interleaved coefficients, this function
28			* rearranges the coefficients into the more traditional subdivision,
29			* making it easier to encode and perform another level. */
30		1980	static av_always_inline void deinterleave(dwtcoef *linell, ptrdiff_t stride,
31			int width, int height, dwtcoef *synthl)
32			{
33			int x, y;
34		1980	ptrdiff_t synthw = width << 1;
35		1980	dwtcoef *linehl = linell + width;
36		1980	dwtcoef linelh = linell + heightstride;
37		1980	dwtcoef *linehh = linelh + width;
38
39			/* Deinterleave the coefficients. */
40	2/2 ✓ Branch 0 taken 121500 times. ✓ Branch 1 taken 1980 times.	123480	for (y = 0; y < height; y++) {
41	2/2 ✓ Branch 0 taken 11865150 times. ✓ Branch 1 taken 121500 times.	11986650	for (x = 0; x < width; x++) {
42		11865150	linell[x] = synthl[(x << 1)];
43		11865150	linehl[x] = synthl[(x << 1) + 1];
44		11865150	linelh[x] = synthl[(x << 1) + synthw];
45		11865150	linehh[x] = synthl[(x << 1) + synthw + 1];
46			}
47		121500	synthl += synthw << 1;
48		121500	linell += stride;
49		121500	linelh += stride;
50		121500	linehl += stride;
51		121500	linehh += stride;
52			}
53		1980	}
54
55		1620	static void vc2_subband_dwt_97(VC2TransformContext t, dwtcoef data,
56			ptrdiff_t stride, int width, int height)
57			{
58			int x, y;
59		1620	dwtcoef datal = data, synth = t->buffer, *synthl = synth;
60		1620	const ptrdiff_t synth_width = width << 1;
61		1620	const ptrdiff_t synth_height = height << 1;
62
63			/*
64			* Shift in one bit that is used for additional precision and copy
65			* the data to the buffer.
66			*/
67	2/2 ✓ Branch 0 taken 194400 times. ✓ Branch 1 taken 1620 times.	196020	for (y = 0; y < synth_height; y++) {
68	2/2 ✓ Branch 0 taken 39382200 times. ✓ Branch 1 taken 194400 times.	39576600	for (x = 0; x < synth_width; x++)
69		39382200	synthl[x] = datal[x] * 2;
70		194400	synthl += synth_width;
71		194400	datal += stride;
72			}
73
74			/* Horizontal synthesis. */
75		1620	synthl = synth;
76	2/2 ✓ Branch 0 taken 194400 times. ✓ Branch 1 taken 1620 times.	196020	for (y = 0; y < synth_height; y++) {
77			/* Lifting stage 2. */
78		194400	synthl[1] -= (8synthl[0] + 9synthl[2] - synthl[4] + 8) >> 4;
79	2/2 ✓ Branch 0 taken 19107900 times. ✓ Branch 1 taken 194400 times.	19302300	for (x = 1; x < width - 2; x++)
80		19107900	synthl[2x + 1] -= (9synthl[2x] + 9synthl[2x + 2] - synthl[2x + 4] -
81		19107900	synthl[2 * x - 2] + 8) >> 4;
82		194400	synthl[synth_width - 1] -= (17*synthl[synth_width - 2] -
83		194400	synthl[synth_width - 4] + 8) >> 4;
84		194400	synthl[synth_width - 3] -= (8*synthl[synth_width - 2] +
85		194400	9*synthl[synth_width - 4] -
86		194400	synthl[synth_width - 6] + 8) >> 4;
87			/* Lifting stage 1. */
88		194400	synthl[0] += (synthl[1] + synthl[1] + 2) >> 2;
89	2/2 ✓ Branch 0 taken 19302300 times. ✓ Branch 1 taken 194400 times.	19496700	for (x = 1; x < width - 1; x++)
90		19302300	synthl[2x] += (synthl[2x - 1] + synthl[2*x + 1] + 2) >> 2;
91
92		194400	synthl[synth_width - 2] += (synthl[synth_width - 3] +
93		194400	synthl[synth_width - 1] + 2) >> 2;
94		194400	synthl += synth_width;
95			}
96
97			/* Vertical synthesis: Lifting stage 2. */
98		1620	synthl = synth + synth_width;
99	2/2 ✓ Branch 0 taken 207900 times. ✓ Branch 1 taken 1620 times.	209520	for (x = 0; x < synth_width; x++)
100		207900	synthl[x] -= (8synthl[x - synth_width] + 9synthl[x + synth_width] -
101		207900	synthl[x + 3 * synth_width] + 8) >> 4;
102
103		1620	synthl = synth + (synth_width << 1);
104	2/2 ✓ Branch 0 taken 92340 times. ✓ Branch 1 taken 1620 times.	93960	for (y = 1; y < height - 2; y++) {
105	2/2 ✓ Branch 0 taken 19067400 times. ✓ Branch 1 taken 92340 times.	19159740	for (x = 0; x < synth_width; x++)
106		19067400	synthl[x + synth_width] -= (9*synthl[x] +
107		19067400	9synthl[x + 2 synth_width] -
108		19067400	synthl[x - 2 * synth_width] -
109		19067400	synthl[x + 4 * synth_width] + 8) >> 4;
110		92340	synthl += synth_width << 1;
111			}
112
113		1620	synthl = synth + (synth_height - 1) * synth_width;
114	2/2 ✓ Branch 0 taken 207900 times. ✓ Branch 1 taken 1620 times.	209520	for (x = 0; x < synth_width; x++) {
115		207900	synthl[x] -= (17*synthl[x - synth_width] -
116		207900	synthl[x - 3*synth_width] + 8) >> 4;
117		207900	synthl[x - 2synth_width] -= (9synthl[x - 3*synth_width] +
118		207900	8synthl[x - 1synth_width] - synthl[x - 5*synth_width] + 8) >> 4;
119			}
120
121			/* Vertical synthesis: Lifting stage 1. */
122		1620	synthl = synth;
123	2/2 ✓ Branch 0 taken 207900 times. ✓ Branch 1 taken 1620 times.	209520	for (x = 0; x < synth_width; x++)
124		207900	synthl[x] += (synthl[x + synth_width] + synthl[x + synth_width] + 2) >> 2;
125
126		1620	synthl = synth + (synth_width << 1);
127	2/2 ✓ Branch 0 taken 93960 times. ✓ Branch 1 taken 1620 times.	95580	for (y = 1; y < height - 1; y++) {
128	2/2 ✓ Branch 0 taken 19275300 times. ✓ Branch 1 taken 93960 times.	19369260	for (x = 0; x < synth_width; x++)
129		19275300	synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;
130		93960	synthl += synth_width << 1;
131			}
132
133		1620	synthl = synth + (synth_height - 2) * synth_width;
134	2/2 ✓ Branch 0 taken 207900 times. ✓ Branch 1 taken 1620 times.	209520	for (x = 0; x < synth_width; x++)
135		207900	synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;
136
137		1620	deinterleave(data, stride, width, height, synth);
138		1620	}
139
140		180	static void vc2_subband_dwt_53(VC2TransformContext t, dwtcoef data,
141			ptrdiff_t stride, int width, int height)
142			{
143			int x, y;
144		180	dwtcoef synth = t->buffer, synthl = synth, *datal = data;
145		180	const ptrdiff_t synth_width = width << 1;
146		180	const ptrdiff_t synth_height = height << 1;
147
148			/*
149			* Shift in one bit that is used for additional precision and copy
150			* the data to the buffer.
151			*/
152	2/2 ✓ Branch 0 taken 24300 times. ✓ Branch 1 taken 180 times.	24480	for (y = 0; y < synth_height; y++) {
153	2/2 ✓ Branch 0 taken 4039200 times. ✓ Branch 1 taken 24300 times.	4063500	for (x = 0; x < synth_width; x++)
154		4039200	synthl[x] = datal[x] * 2;
155		24300	synthl += synth_width;
156		24300	datal += stride;
157			}
158
159			/* Horizontal synthesis. */
160		180	synthl = synth;
161	2/2 ✓ Branch 0 taken 24300 times. ✓ Branch 1 taken 180 times.	24480	for (y = 0; y < synth_height; y++) {
162			/* Lifting stage 2. */
163	2/2 ✓ Branch 0 taken 1995300 times. ✓ Branch 1 taken 24300 times.	2019600	for (x = 0; x < width - 1; x++)
164		1995300	synthl[2 * x + 1] -= (synthl[2 * x] + synthl[2 * x + 2] + 1) >> 1;
165
166		24300	synthl[synth_width - 1] -= (2*synthl[synth_width - 2] + 1) >> 1;
167
168			/* Lifting stage 1. */
169		24300	synthl[0] += (2*synthl[1] + 2) >> 2;
170	2/2 ✓ Branch 0 taken 1971000 times. ✓ Branch 1 taken 24300 times.	1995300	for (x = 1; x < width - 1; x++)
171		1971000	synthl[2 * x] += (synthl[2 * x - 1] + synthl[2 * x + 1] + 2) >> 2;
172
173		24300	synthl[synth_width - 2] += (synthl[synth_width - 3] + synthl[synth_width - 1] + 2) >> 2;
174
175		24300	synthl += synth_width;
176			}
177
178			/* Vertical synthesis: Lifting stage 2. */
179		180	synthl = synth + synth_width;
180	2/2 ✓ Branch 0 taken 19800 times. ✓ Branch 1 taken 180 times.	19980	for (x = 0; x < synth_width; x++)
181		19800	synthl[x] -= (synthl[x - synth_width] + synthl[x + synth_width] + 1) >> 1;
182
183		180	synthl = synth + (synth_width << 1);
184	2/2 ✓ Branch 0 taken 11790 times. ✓ Branch 1 taken 180 times.	11970	for (y = 1; y < height - 1; y++) {
185	2/2 ✓ Branch 0 taken 1980000 times. ✓ Branch 1 taken 11790 times.	1991790	for (x = 0; x < synth_width; x++)
186		1980000	synthl[x + synth_width] -= (synthl[x] + synthl[x + synth_width * 2] + 1) >> 1;
187		11790	synthl += (synth_width << 1);
188			}
189
190		180	synthl = synth + (synth_height - 1) * synth_width;
191	2/2 ✓ Branch 0 taken 19800 times. ✓ Branch 1 taken 180 times.	19980	for (x = 0; x < synth_width; x++)
192		19800	synthl[x] -= (2*synthl[x - synth_width] + 1) >> 1;
193
194			/* Vertical synthesis: Lifting stage 1. */
195		180	synthl = synth;
196	2/2 ✓ Branch 0 taken 19800 times. ✓ Branch 1 taken 180 times.	19980	for (x = 0; x < synth_width; x++)
197		19800	synthl[x] += (2*synthl[synth_width + x] + 2) >> 2;
198
199		180	synthl = synth + (synth_width << 1);
200	2/2 ✓ Branch 0 taken 11790 times. ✓ Branch 1 taken 180 times.	11970	for (y = 1; y < height - 1; y++) {
201	2/2 ✓ Branch 0 taken 1980000 times. ✓ Branch 1 taken 11790 times.	1991790	for (x = 0; x < synth_width; x++)
202		1980000	synthl[x] += (synthl[x + synth_width] + synthl[x - synth_width] + 2) >> 2;
203		11790	synthl += (synth_width << 1);
204			}
205
206		180	synthl = synth + (synth_height - 2)*synth_width;
207	2/2 ✓ Branch 0 taken 19800 times. ✓ Branch 1 taken 180 times.	19980	for (x = 0; x < synth_width; x++)
208		19800	synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;
209
210
211		180	deinterleave(data, stride, width, height, synth);
212		180	}
213
214		180	static av_always_inline void dwt_haar(VC2TransformContext t, dwtcoef data,
215			ptrdiff_t stride, int width, int height,
216			const int s)
217			{
218			int x, y;
219		180	dwtcoef synth = t->buffer, synthl = synth, *datal = data;
220		180	const ptrdiff_t synth_width = width << 1;
221		180	const ptrdiff_t synth_height = height << 1;
222
223			/* Horizontal synthesis. */
224	2/2 ✓ Branch 0 taken 24300 times. ✓ Branch 1 taken 180 times.	24480	for (y = 0; y < synth_height; y++) {
225	2/2 ✓ Branch 0 taken 2019600 times. ✓ Branch 1 taken 24300 times.	2043900	for (x = 0; x < synth_width; x += 2) {
226		2019600	synthl[ysynth_width + x + 1] = (datal[ystride + x + 1] - datal[ystride + x]) (1 << s);
227		2019600	synthl[ysynth_width + x] = datal[ystride + x + 0] * (1 << s) +
228		2019600	((synthl[y*synth_width + x + 1] + 1) >> 1);
229			}
230			}
231
232			/* Vertical synthesis. */
233	2/2 ✓ Branch 0 taken 19800 times. ✓ Branch 1 taken 180 times.	19980	for (x = 0; x < synth_width; x++) {
234	2/2 ✓ Branch 0 taken 2019600 times. ✓ Branch 1 taken 19800 times.	2039400	for (y = 0; y < synth_height; y += 2) {
235		2019600	synthl[(y + 1)synth_width + x] = synthl[(y + 1)synth_width + x] -
236		2019600	synthl[y*synth_width + x];
237		2019600	synthl[ysynth_width + x] = synthl[ysynth_width + x] +
238		2019600	((synthl[(y + 1)*synth_width + x] + 1) >> 1);
239			}
240			}
241
242		180	deinterleave(data, stride, width, height, synth);
243		180	}
244
245		✗	static void vc2_subband_dwt_haar(VC2TransformContext t, dwtcoef data,
246			ptrdiff_t stride, int width, int height)
247			{
248		✗	dwt_haar(t, data, stride, width, height, 0);
249		✗	}
250
251		180	static void vc2_subband_dwt_haar_shift(VC2TransformContext t, dwtcoef data,
252			ptrdiff_t stride, int width, int height)
253			{
254		180	dwt_haar(t, data, stride, width, height, 1);
255		180	}
256
257		99	av_cold int ff_vc2enc_init_transforms(VC2TransformContext *s, int p_stride,
258			int p_height, int slice_w, int slice_h)
259			{
260		99	s->vc2_subband_dwt[VC2_TRANSFORM_9_7] = vc2_subband_dwt_97;
261		99	s->vc2_subband_dwt[VC2_TRANSFORM_5_3] = vc2_subband_dwt_53;
262		99	s->vc2_subband_dwt[VC2_TRANSFORM_HAAR] = vc2_subband_dwt_haar;
263		99	s->vc2_subband_dwt[VC2_TRANSFORM_HAAR_S] = vc2_subband_dwt_haar_shift;
264
265			/* Pad by the slice size, only matters for non-Haar wavelets */
266		99	s->buffer = av_calloc((p_stride + slice_w)*(p_height + slice_h), sizeof(dwtcoef));
267	1/2 ✗ Branch 0 not taken. ✓ Branch 1 taken 99 times.	99	if (!s->buffer)
268		✗	return 1;
269
270		99	s->padding = (slice_h >> 1)*p_stride + (slice_w >> 1);
271		99	s->buffer += s->padding;
272
273		99	return 0;
274			}
275
276		99	av_cold void ff_vc2enc_free_transforms(VC2TransformContext *s)
277			{
278	1/2 ✓ Branch 0 taken 99 times. ✗ Branch 1 not taken.	99	if (s->buffer) {
279		99	av_free(s->buffer - s->padding);
280		99	s->buffer = NULL;
281			}
282		99	}
283

Function (Line)	Call count	Block coverage
deinterleave (line 30)	called 1980 times, returned 1980 times	100.0%
dwt_haar (line 214)	called 180 times, returned 180 times	100.0%
ff_vc2enc_free_transforms (line 276)	called 99 times, returned 99 times	100.0%
ff_vc2enc_init_transforms (line 257)	called 99 times, returned 99 times	80.0%
vc2_subband_dwt_53 (line 140)	called 180 times, returned 180 times	100.0%
vc2_subband_dwt_97 (line 55)	called 1620 times, returned 1620 times	100.0%
vc2_subband_dwt_haar (line 245)	not called	0.0%
vc2_subband_dwt_haar_shift (line 251)	called 180 times, returned 180 times	100.0%