FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/vc2enc_dwt.c	Lines:	152	155	98.1 %
Date:	2021-04-22 14:24:15	Branches:	65	66	98.5 %


/*
 * 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. */
static av_always_inline void deinterleave(dwtcoef *linell, ptrdiff_t stride,
                                          int width, int height, dwtcoef *synthl)
{
    int x, y;
    ptrdiff_t synthw = width << 1;
    dwtcoef *linehl = linell + width;
    dwtcoef *linelh = linell + height*stride;
    dwtcoef *linehh = linelh + width;

    /* Deinterleave the coefficients. */
    for (y = 0; y < height; y++) {
        for (x = 0; x < width; x++) {
            linell[x] = synthl[(x << 1)];
            linehl[x] = synthl[(x << 1) + 1];
            linelh[x] = synthl[(x << 1) + synthw];
            linehh[x] = synthl[(x << 1) + synthw + 1];
        }
        synthl += synthw << 1;
        linell += stride;
        linelh += stride;
        linehl += stride;
        linehh += stride;
    }
}

static void vc2_subband_dwt_97(VC2TransformContext *t, dwtcoef *data,
                               ptrdiff_t stride, int width, int height)
{
    int x, y;
    dwtcoef *datal = data, *synth = t->buffer, *synthl = synth;
    const ptrdiff_t synth_width  = width  << 1;
    const ptrdiff_t synth_height = height << 1;

    /*
     * Shift in one bit that is used for additional precision and copy
     * the data to the buffer.
     */
    for (y = 0; y < synth_height; y++) {
        for (x = 0; x < synth_width; x++)
            synthl[x] = datal[x] * 2;
        synthl += synth_width;
        datal += stride;
    }

    /* Horizontal synthesis. */
    synthl = synth;
    for (y = 0; y < synth_height; y++) {
        /* Lifting stage 2. */
        synthl[1] -= (8*synthl[0] + 9*synthl[2] - synthl[4] + 8) >> 4;
        for (x = 1; x < width - 2; x++)
            synthl[2*x + 1] -= (9*synthl[2*x] + 9*synthl[2*x + 2] - synthl[2*x + 4] -
                                synthl[2 * x - 2] + 8) >> 4;
        synthl[synth_width - 1] -= (17*synthl[synth_width - 2] -
                                    synthl[synth_width - 4] + 8) >> 4;
        synthl[synth_width - 3] -= (8*synthl[synth_width - 2] +
                                    9*synthl[synth_width - 4] -
                                    synthl[synth_width - 6] + 8) >> 4;
        /* Lifting stage 1. */
        synthl[0] += (synthl[1] + synthl[1] + 2) >> 2;
        for (x = 1; x < width - 1; x++)
            synthl[2*x] += (synthl[2*x - 1] + synthl[2*x + 1] + 2) >> 2;

        synthl[synth_width - 2] += (synthl[synth_width - 3] +
                                    synthl[synth_width - 1] + 2) >> 2;
        synthl += synth_width;
    }

    /* Vertical synthesis: Lifting stage 2. */
    synthl = synth + synth_width;
    for (x = 0; x < synth_width; x++)
        synthl[x] -= (8*synthl[x - synth_width] + 9*synthl[x + synth_width] -
                      synthl[x + 3 * synth_width] + 8) >> 4;

    synthl = synth + (synth_width << 1);
    for (y = 1; y < height - 2; y++) {
        for (x = 0; x < synth_width; x++)
            synthl[x + synth_width] -= (9*synthl[x] +
                                        9*synthl[x + 2 * synth_width] -
                                        synthl[x - 2 * synth_width] -
                                        synthl[x + 4 * synth_width] + 8) >> 4;
        synthl += synth_width << 1;
    }

    synthl = synth + (synth_height - 1) * synth_width;
    for (x = 0; x < synth_width; x++) {
        synthl[x] -= (17*synthl[x - synth_width] -
                      synthl[x - 3*synth_width] + 8) >> 4;
                      synthl[x - 2*synth_width] -= (9*synthl[x - 3*synth_width] +
                      8*synthl[x - 1*synth_width] - synthl[x - 5*synth_width] + 8) >> 4;
    }

    /* Vertical synthesis: Lifting stage 1. */
    synthl = synth;
    for (x = 0; x < synth_width; x++)
        synthl[x] += (synthl[x + synth_width] + synthl[x + synth_width] + 2) >> 2;

    synthl = synth + (synth_width << 1);
    for (y = 1; y < height - 1; y++) {
        for (x = 0; x < synth_width; x++)
            synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;
        synthl += synth_width << 1;
    }

    synthl = synth + (synth_height - 2) * synth_width;
    for (x = 0; x < synth_width; x++)
        synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;

    deinterleave(data, stride, width, height, synth);
}

static void vc2_subband_dwt_53(VC2TransformContext *t, dwtcoef *data,
                               ptrdiff_t stride, int width, int height)
{
    int x, y;
    dwtcoef *synth = t->buffer, *synthl = synth, *datal = data;
    const ptrdiff_t synth_width  = width  << 1;
    const ptrdiff_t synth_height = height << 1;

    /*
     * Shift in one bit that is used for additional precision and copy
     * the data to the buffer.
     */
    for (y = 0; y < synth_height; y++) {
        for (x = 0; x < synth_width; x++)
            synthl[x] = datal[x] << 1;
        synthl += synth_width;
        datal  += stride;
    }

    /* Horizontal synthesis. */
    synthl = synth;
    for (y = 0; y < synth_height; y++) {
        /* Lifting stage 2. */
        for (x = 0; x < width - 1; x++)
            synthl[2 * x + 1] -= (synthl[2 * x] + synthl[2 * x + 2] + 1) >> 1;

        synthl[synth_width - 1] -= (2*synthl[synth_width - 2] + 1) >> 1;

        /* Lifting stage 1. */
        synthl[0] += (2*synthl[1] + 2) >> 2;
        for (x = 1; x < width - 1; x++)
            synthl[2 * x] += (synthl[2 * x - 1] + synthl[2 * x + 1] + 2) >> 2;

        synthl[synth_width - 2] += (synthl[synth_width - 3] + synthl[synth_width - 1] + 2) >> 2;

        synthl += synth_width;
    }

    /* Vertical synthesis: Lifting stage 2. */
    synthl = synth + synth_width;
    for (x = 0; x < synth_width; x++)
        synthl[x] -= (synthl[x - synth_width] + synthl[x + synth_width] + 1) >> 1;

    synthl = synth + (synth_width << 1);
    for (y = 1; y < height - 1; y++) {
        for (x = 0; x < synth_width; x++)
            synthl[x + synth_width] -= (synthl[x] + synthl[x + synth_width * 2] + 1) >> 1;
        synthl += (synth_width << 1);
    }

    synthl = synth + (synth_height - 1) * synth_width;
    for (x = 0; x < synth_width; x++)
        synthl[x] -= (2*synthl[x - synth_width] + 1) >> 1;

    /* Vertical synthesis: Lifting stage 1. */
    synthl = synth;
    for (x = 0; x < synth_width; x++)
        synthl[x] += (2*synthl[synth_width + x] + 2) >> 2;

    synthl = synth + (synth_width << 1);
    for (y = 1; y < height - 1; y++) {
        for (x = 0; x < synth_width; x++)
            synthl[x] += (synthl[x + synth_width] + synthl[x - synth_width] + 2) >> 2;
        synthl += (synth_width << 1);
    }

    synthl = synth + (synth_height - 2)*synth_width;
    for (x = 0; x < synth_width; x++)
        synthl[x] += (synthl[x - synth_width] + synthl[x + synth_width] + 2) >> 2;


    deinterleave(data, stride, width, height, synth);
}

static av_always_inline void dwt_haar(VC2TransformContext *t, dwtcoef *data,
                                      ptrdiff_t stride, int width, int height,
                                      const int s)
{
    int x, y;
    dwtcoef *synth = t->buffer, *synthl = synth, *datal = data;
    const ptrdiff_t synth_width  = width  << 1;
    const ptrdiff_t synth_height = height << 1;

    /* Horizontal synthesis. */
    for (y = 0; y < synth_height; y++) {
        for (x = 0; x < synth_width; x += 2) {
            synthl[y*synth_width + x + 1] = (datal[y*stride + x + 1] << s) -
                                            (datal[y*stride + x] << s);
            synthl[y*synth_width + x] = (datal[y*stride + x + 0] << s) +
                                        ((synthl[y*synth_width + x + 1] + 1) >> 1);
        }
    }

    /* Vertical synthesis. */
    for (x = 0; x < synth_width; x++) {
        for (y = 0; y < synth_height; y += 2) {
            synthl[(y + 1)*synth_width + x] = synthl[(y + 1)*synth_width + x] -
                                              synthl[y*synth_width + x];
            synthl[y*synth_width + x] = synthl[y*synth_width + x] +
                                        ((synthl[(y + 1)*synth_width + x] + 1) >> 1);
        }
    }

    deinterleave(data, stride, width, height, synth);
}

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);
}

static void vc2_subband_dwt_haar_shift(VC2TransformContext *t, dwtcoef *data,
                                       ptrdiff_t stride, int width, int height)
{
    dwt_haar(t, data, stride, width, height, 1);
}

av_cold int ff_vc2enc_init_transforms(VC2TransformContext *s, int p_stride,
                                      int p_height, int slice_w, int slice_h)
{
    s->vc2_subband_dwt[VC2_TRANSFORM_9_7]    = vc2_subband_dwt_97;
    s->vc2_subband_dwt[VC2_TRANSFORM_5_3]    = vc2_subband_dwt_53;
    s->vc2_subband_dwt[VC2_TRANSFORM_HAAR]   = vc2_subband_dwt_haar;
    s->vc2_subband_dwt[VC2_TRANSFORM_HAAR_S] = vc2_subband_dwt_haar_shift;

    /* Pad by the slice size, only matters for non-Haar wavelets */
    s->buffer = av_calloc((p_stride + slice_w)*(p_height + slice_h), sizeof(dwtcoef));
    if (!s->buffer)
        return 1;

    s->padding = (slice_h >> 1)*p_stride + (slice_w >> 1);
    s->buffer += s->padding;

    return 0;
}

av_cold void ff_vc2enc_free_transforms(VC2TransformContext *s)
{
    av_free(s->buffer - s->padding);
    s->buffer = NULL;
}


Generated by: GCOVR (Version 4.2)

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	✓✓	123480	for (y = 0; y < height; y++) {
41	✓✓	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	✓✓	196020	for (y = 0; y < synth_height; y++) {
68	✓✓	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	✓✓	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	✓✓	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	✓✓	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	✓✓	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	✓✓	93960	for (y = 1; y < height - 2; y++) {
105	✓✓	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	✓✓	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	✓✓	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	✓✓	95580	for (y = 1; y < height - 1; y++) {
128	✓✓	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	✓✓	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	✓✓	24480	for (y = 0; y < synth_height; y++) {
153	✓✓	4063500	for (x = 0; x < synth_width; x++)
154		4039200	synthl[x] = datal[x] << 1;
155		24300	synthl += synth_width;
156		24300	datal += stride;
157			}
158
159			/* Horizontal synthesis. */
160		180	synthl = synth;
161	✓✓	24480	for (y = 0; y < synth_height; y++) {
162			/* Lifting stage 2. */
163	✓✓	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	✓✓	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	✓✓	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	✓✓	11970	for (y = 1; y < height - 1; y++) {
185	✓✓	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	✓✓	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	✓✓	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	✓✓	11970	for (y = 1; y < height - 1; y++) {
201	✓✓	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	✓✓	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	✓✓	24480	for (y = 0; y < synth_height; y++) {
225	✓✓	2043900	for (x = 0; x < synth_width; x += 2) {
226		2019600	synthl[ysynth_width + x + 1] = (datal[ystride + x + 1] << s) -
227		2019600	(datal[y*stride + x] << s);
228		2019600	synthl[ysynth_width + x] = (datal[ystride + x + 0] << s) +
229		2019600	((synthl[y*synth_width + x + 1] + 1) >> 1);
230			}
231			}
232
233			/* Vertical synthesis. */
234	✓✓	19980	for (x = 0; x < synth_width; x++) {
235	✓✓	2039400	for (y = 0; y < synth_height; y += 2) {
236		2019600	synthl[(y + 1)synth_width + x] = synthl[(y + 1)synth_width + x] -
237		2019600	synthl[y*synth_width + x];
238		2019600	synthl[ysynth_width + x] = synthl[ysynth_width + x] +
239		2019600	((synthl[(y + 1)*synth_width + x] + 1) >> 1);
240			}
241			}
242
243		180	deinterleave(data, stride, width, height, synth);
244		180	}
245
246			static void vc2_subband_dwt_haar(VC2TransformContext t, dwtcoef data,
247			ptrdiff_t stride, int width, int height)
248			{
249			dwt_haar(t, data, stride, width, height, 0);
250			}
251
252		180	static void vc2_subband_dwt_haar_shift(VC2TransformContext t, dwtcoef data,
253			ptrdiff_t stride, int width, int height)
254			{
255		180	dwt_haar(t, data, stride, width, height, 1);
256		180	}
257
258		99	av_cold int ff_vc2enc_init_transforms(VC2TransformContext *s, int p_stride,
259			int p_height, int slice_w, int slice_h)
260			{
261		99	s->vc2_subband_dwt[VC2_TRANSFORM_9_7] = vc2_subband_dwt_97;
262		99	s->vc2_subband_dwt[VC2_TRANSFORM_5_3] = vc2_subband_dwt_53;
263		99	s->vc2_subband_dwt[VC2_TRANSFORM_HAAR] = vc2_subband_dwt_haar;
264		99	s->vc2_subband_dwt[VC2_TRANSFORM_HAAR_S] = vc2_subband_dwt_haar_shift;
265
266			/* Pad by the slice size, only matters for non-Haar wavelets */
267		99	s->buffer = av_calloc((p_stride + slice_w)*(p_height + slice_h), sizeof(dwtcoef));
268	✗✓	99	if (!s->buffer)
269			return 1;
270
271		99	s->padding = (slice_h >> 1)*p_stride + (slice_w >> 1);
272		99	s->buffer += s->padding;
273
274		99	return 0;
275			}
276
277		99	av_cold void ff_vc2enc_free_transforms(VC2TransformContext *s)
278			{
279		99	av_free(s->buffer - s->padding);
280		99	s->buffer = NULL;
281		99	}