Libav
swscale-test.c
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1 /*
2  * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of Libav.
5  *
6  * Libav is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * Libav is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <inttypes.h>
25 #include <stdarg.h>
26 
27 #undef HAVE_AV_CONFIG_H
28 #include "libavutil/imgutils.h"
29 #include "libavutil/mem.h"
30 #include "libavutil/avutil.h"
31 #include "libavutil/crc.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/lfg.h"
34 #include "swscale.h"
35 
36 /* HACK Duplicated from swscale_internal.h.
37  * Should be removed when a cleaner pixel format system exists. */
38 #define isGray(x) \
39  ((x) == AV_PIX_FMT_GRAY8 || \
40  (x) == AV_PIX_FMT_YA8 || \
41  (x) == AV_PIX_FMT_GRAY16BE || \
42  (x) == AV_PIX_FMT_GRAY16LE || \
43  (x) == AV_PIX_FMT_YA16BE || \
44  (x) == AV_PIX_FMT_YA16LE)
45 #define hasChroma(x) \
46  (!(isGray(x) || \
47  (x) == AV_PIX_FMT_MONOBLACK || \
48  (x) == AV_PIX_FMT_MONOWHITE))
49 #define isALPHA(x) \
50  ((x) == AV_PIX_FMT_BGR32 || \
51  (x) == AV_PIX_FMT_BGR32_1 || \
52  (x) == AV_PIX_FMT_RGB32 || \
53  (x) == AV_PIX_FMT_RGB32_1 || \
54  (x) == AV_PIX_FMT_YUVA420P)
55 
56 static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1,
57  int stride2, int w, int h)
58 {
59  int x, y;
60  uint64_t ssd = 0;
61 
62  for (y = 0; y < h; y++) {
63  for (x = 0; x < w; x++) {
64  int d = src1[x + y * stride1] - src2[x + y * stride2];
65  ssd += d * d;
66  }
67  }
68  return ssd;
69 }
70 
71 struct Results {
72  uint64_t ssdY;
73  uint64_t ssdU;
74  uint64_t ssdV;
75  uint64_t ssdA;
76  uint32_t crc;
77 };
78 
79 // test by ref -> src -> dst -> out & compare out against ref
80 // ref & out are YV12
81 static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
82  enum AVPixelFormat srcFormat, enum AVPixelFormat dstFormat,
83  int srcW, int srcH, int dstW, int dstH, int flags,
84  struct Results *r)
85 {
87  const AVPixFmtDescriptor *desc_src = av_pix_fmt_desc_get(srcFormat);
88  const AVPixFmtDescriptor *desc_dst = av_pix_fmt_desc_get(dstFormat);
89  static enum AVPixelFormat cur_srcFormat;
90  static int cur_srcW, cur_srcH;
91  static uint8_t *src[4];
92  static int srcStride[4];
93  uint8_t *dst[4] = { 0 };
94  uint8_t *out[4] = { 0 };
95  int dstStride[4];
96  int i;
97  uint64_t ssdY, ssdU = 0, ssdV = 0, ssdA = 0;
98  struct SwsContext *dstContext = NULL, *outContext = NULL;
99  uint32_t crc = 0;
100  int res = 0;
101 
102  if (cur_srcFormat != srcFormat || cur_srcW != srcW || cur_srcH != srcH) {
103  struct SwsContext *srcContext = NULL;
104  int p;
105 
106  for (p = 0; p < 4; p++)
107  av_freep(&src[p]);
108 
109  av_image_fill_linesizes(srcStride, srcFormat, srcW);
110  for (p = 0; p < 4; p++) {
111  if (srcStride[p])
112  src[p] = av_mallocz(srcStride[p] * srcH + 16);
113  if (srcStride[p] && !src[p]) {
114  perror("Malloc");
115  res = -1;
116  goto end;
117  }
118  }
119  srcContext = sws_getContext(w, h, AV_PIX_FMT_YUVA420P, srcW, srcH,
120  srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
121  if (!srcContext) {
122  fprintf(stderr, "Failed to get %s ---> %s\n",
123  desc_yuva420p->name,
124  desc_src->name);
125  res = -1;
126  goto end;
127  }
128  sws_scale(srcContext, ref, refStride, 0, h, src, srcStride);
129  sws_freeContext(srcContext);
130 
131  cur_srcFormat = srcFormat;
132  cur_srcW = srcW;
133  cur_srcH = srcH;
134  }
135 
136  av_image_fill_linesizes(dstStride, dstFormat, dstW);
137  for (i = 0; i < 4; i++) {
138  /* Image buffers passed into libswscale can be allocated any way you
139  * prefer, as long as they're aligned enough for the architecture, and
140  * they're freed appropriately (such as using av_free for buffers
141  * allocated with av_malloc). */
142  /* An extra 16 bytes is being allocated because some scalers may write
143  * out of bounds. */
144  if (dstStride[i])
145  dst[i] = av_mallocz(dstStride[i] * dstH + 16);
146  if (dstStride[i] && !dst[i]) {
147  perror("Malloc");
148  res = -1;
149 
150  goto end;
151  }
152  }
153 
154  dstContext = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
155  flags, NULL, NULL, NULL);
156  if (!dstContext) {
157  fprintf(stderr, "Failed to get %s ---> %s\n",
158  desc_src->name, desc_dst->name);
159  res = -1;
160  goto end;
161  }
162 
163  printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
164  desc_src->name, srcW, srcH,
165  desc_dst->name, dstW, dstH,
166  flags);
167  fflush(stdout);
168 
169  sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
170 
171  for (i = 0; i < 4 && dstStride[i]; i++)
172  crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i],
173  dstStride[i] * dstH);
174 
175  if (r && crc == r->crc) {
176  ssdY = r->ssdY;
177  ssdU = r->ssdU;
178  ssdV = r->ssdV;
179  ssdA = r->ssdA;
180  } else {
181  for (i = 0; i < 4; i++) {
182  if (refStride[i])
183  out[i] = av_mallocz(refStride[i] * h);
184  if (refStride[i] && !out[i]) {
185  perror("Malloc");
186  res = -1;
187  goto end;
188  }
189  }
190  outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
192  NULL, NULL, NULL);
193  if (!outContext) {
194  fprintf(stderr, "Failed to get %s ---> %s\n",
195  desc_dst->name,
196  desc_yuva420p->name);
197  res = -1;
198  goto end;
199  }
200  sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
201 
202  ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
203  if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
204  //FIXME check that output is really gray
205  ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
206  (w + 1) >> 1, (h + 1) >> 1);
207  ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
208  (w + 1) >> 1, (h + 1) >> 1);
209  }
210  if (isALPHA(srcFormat) && isALPHA(dstFormat))
211  ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
212 
213  ssdY /= w * h;
214  ssdU /= w * h / 4;
215  ssdV /= w * h / 4;
216  ssdA /= w * h;
217 
218  sws_freeContext(outContext);
219 
220  for (i = 0; i < 4; i++)
221  if (refStride[i])
222  av_free(out[i]);
223  }
224 
225  printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
226  crc, ssdY, ssdU, ssdV, ssdA);
227 
228 end:
229  sws_freeContext(dstContext);
230 
231  for (i = 0; i < 4; i++)
232  if (dstStride[i])
233  av_free(dst[i]);
234 
235  return res;
236 }
237 
238 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
239  enum AVPixelFormat srcFormat_in,
240  enum AVPixelFormat dstFormat_in)
241 {
243  SWS_X, SWS_POINT, SWS_AREA, 0 };
244  const int srcW = w;
245  const int srcH = h;
246  const int dstW[] = { srcW - srcW / 3, srcW, srcW + srcW / 3, 0 };
247  const int dstH[] = { srcH - srcH / 3, srcH, srcH + srcH / 3, 0 };
249  const AVPixFmtDescriptor *desc_src, *desc_dst;
250 
251  for (srcFormat = srcFormat_in != AV_PIX_FMT_NONE ? srcFormat_in : 0;
252  srcFormat < AV_PIX_FMT_NB; srcFormat++) {
253  if (!sws_isSupportedInput(srcFormat) ||
254  !sws_isSupportedOutput(srcFormat))
255  continue;
256 
257  desc_src = av_pix_fmt_desc_get(srcFormat);
258 
259  for (dstFormat = dstFormat_in != AV_PIX_FMT_NONE ? dstFormat_in : 0;
260  dstFormat < AV_PIX_FMT_NB; dstFormat++) {
261  int i, j, k;
262  int res = 0;
263 
264  if (!sws_isSupportedInput(dstFormat) ||
265  !sws_isSupportedOutput(dstFormat))
266  continue;
267 
268  desc_dst = av_pix_fmt_desc_get(dstFormat);
269 
270  printf("%s -> %s\n", desc_src->name, desc_dst->name);
271  fflush(stdout);
272 
273  for (k = 0; flags[k] && !res; k++)
274  for (i = 0; dstW[i] && !res; i++)
275  for (j = 0; dstH[j] && !res; j++)
276  res = doTest(ref, refStride, w, h,
277  srcFormat, dstFormat,
278  srcW, srcH, dstW[i], dstH[j], flags[k],
279  NULL);
280  if (dstFormat_in != AV_PIX_FMT_NONE)
281  break;
282  }
283  if (srcFormat_in != AV_PIX_FMT_NONE)
284  break;
285  }
286 }
287 
288 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
289  enum AVPixelFormat srcFormat_in,
290  enum AVPixelFormat dstFormat_in)
291 {
292  char buf[256];
293 
294  while (fgets(buf, sizeof(buf), fp)) {
295  struct Results r;
296  enum AVPixelFormat srcFormat;
297  char srcStr[12];
298  int srcW, srcH;
299  enum AVPixelFormat dstFormat;
300  char dstStr[12];
301  int dstW, dstH;
302  int flags;
303  int ret;
304 
305  ret = sscanf(buf,
306  " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
307  " SSD=%"PRId64 ", %"PRId64 ", %"PRId64 ", %"PRId64 "\n",
308  srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
309  &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
310  if (ret != 12) {
311  srcStr[0] = dstStr[0] = 0;
312  ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
313  }
314 
315  srcFormat = av_get_pix_fmt(srcStr);
316  dstFormat = av_get_pix_fmt(dstStr);
317 
318  if (srcFormat == AV_PIX_FMT_NONE || dstFormat == AV_PIX_FMT_NONE) {
319  fprintf(stderr, "malformed input file\n");
320  return -1;
321  }
322  if ((srcFormat_in != AV_PIX_FMT_NONE && srcFormat_in != srcFormat) ||
323  (dstFormat_in != AV_PIX_FMT_NONE && dstFormat_in != dstFormat))
324  continue;
325  if (ret != 12) {
326  printf("%s", buf);
327  continue;
328  }
329 
330  doTest(ref, refStride, w, h,
331  srcFormat, dstFormat,
332  srcW, srcH, dstW, dstH, flags,
333  &r);
334  }
335 
336  return 0;
337 }
338 
339 #define W 96
340 #define H 96
341 
342 int main(int argc, char **argv)
343 {
344  enum AVPixelFormat srcFormat = AV_PIX_FMT_NONE;
345  enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
346  uint8_t *rgb_data = av_malloc(W * H * 4);
347  uint8_t *rgb_src[4] = { rgb_data, NULL, NULL, NULL };
348  int rgb_stride[4] = { 4 * W, 0, 0, 0 };
349  uint8_t *data = av_malloc(4 * W * H);
350  uint8_t *src[4] = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
351  int stride[4] = { W, W, W, W };
352  int x, y;
353  struct SwsContext *sws;
354  AVLFG rand;
355  int res = -1;
356  int i;
357 
358  if (!rgb_data || !data)
359  return -1;
360 
361  sws = sws_getContext(W / 12, H / 12, AV_PIX_FMT_RGB32, W, H,
362  AV_PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
363 
364  av_lfg_init(&rand, 1);
365 
366  for (y = 0; y < H; y++)
367  for (x = 0; x < W * 4; x++)
368  rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
369  sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
370  sws_freeContext(sws);
371  av_free(rgb_data);
372 
373  for (i = 1; i < argc; i += 2) {
374  if (argv[i][0] != '-' || i + 1 == argc)
375  goto bad_option;
376  if (!strcmp(argv[i], "-ref")) {
377  FILE *fp = fopen(argv[i + 1], "r");
378  if (!fp) {
379  fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
380  goto error;
381  }
382  res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
383  fclose(fp);
384  goto end;
385  } else if (!strcmp(argv[i], "-src")) {
386  srcFormat = av_get_pix_fmt(argv[i + 1]);
387  if (srcFormat == AV_PIX_FMT_NONE) {
388  fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
389  return -1;
390  }
391  } else if (!strcmp(argv[i], "-dst")) {
392  dstFormat = av_get_pix_fmt(argv[i + 1]);
393  if (dstFormat == AV_PIX_FMT_NONE) {
394  fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
395  return -1;
396  }
397  } else {
398 bad_option:
399  fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
400  goto error;
401  }
402  }
403 
404  selfTest(src, stride, W, H, srcFormat, dstFormat);
405 end:
406  res = 0;
407 error:
408  av_free(data);
409 
410  return res;
411 }
Definition: lfg.h:25
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:62
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1599
#define SWS_X
Definition: swscale.h:60
#define SWS_BICUBIC
Definition: swscale.h:59
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:311
misc image utilities
static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp, enum AVPixelFormat srcFormat_in, enum AVPixelFormat dstFormat_in)
Definition: swscale-test.c:288
memory handling functions
external API header
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_dlog(ac->avr, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> out
uint64_t ssdY
Definition: swscale-test.c:72
int stride
Definition: mace.c:144
int main(int argc, char **argv)
Definition: swscale-test.c:342
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:198
int srcH
Height of source luma/alpha planes.
#define SWS_BILINEAR
Definition: swscale.h:58
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:104
uint8_t
#define H
Definition: swscale-test.c:340
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:297
#define SWS_FAST_BILINEAR
Definition: swscale.h:57
const char data[16]
Definition: mxf.c:70
static int flags
Definition: log.c:44
#define W
Definition: swscale-test.c:339
struct SwsContext * sws_getContext(int srcW, int srcH, enum AVPixelFormat srcFormat, int dstW, int dstH, enum AVPixelFormat dstFormat, int flags, SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)
Allocate and return an SwsContext.
Definition: utils.c:1321
external api for the swscale stuff
enum AVPixelFormat dstFormat
Destination pixel format.
#define isALPHA(x)
Definition: swscale-test.c:49
const char * name
Definition: pixdesc.h:70
#define r
Definition: input.c:51
int dstH
Height of destination luma/alpha planes.
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
Definition: mem.c:186
#define sws_isSupportedOutput(x)
uint64_t ssdA
Definition: swscale-test.c:75
void sws_freeContext(struct SwsContext *swsContext)
Free the swscaler context swsContext.
Definition: utils.c:1666
#define sws_isSupportedInput(x)
int dstW
Width of destination luma/alpha planes.
NULL
Definition: eval.c:55
uint32_t crc
Definition: swscale-test.c:76
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:222
int sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
Scale the image slice in srcSlice and put the resulting scaled slice in the image in dst...
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
Definition: lfg.h:38
uint64_t ssdU
Definition: swscale-test.c:73
#define SWS_AREA
Definition: swscale.h:62
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:68
#define hasChroma(x)
Definition: swscale-test.c:45
uint64_t ssdV
Definition: swscale-test.c:74
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:30
#define SWS_POINT
Definition: swscale.h:61
enum AVPixelFormat srcFormat
Source pixel format.
static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
Definition: swscale-test.c:56
static int doTest(uint8_t *ref[4], int refStride[4], int w, int h, enum AVPixelFormat srcFormat, enum AVPixelFormat dstFormat, int srcW, int srcH, int dstW, int dstH, int flags, struct Results *r)
Definition: swscale-test.c:81
number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of...
Definition: pixfmt.h:209
static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h, enum AVPixelFormat srcFormat_in, enum AVPixelFormat dstFormat_in)
Definition: swscale-test.c:238
enum AVPixelFormat av_get_pix_fmt(const char *name)
Return the pixel format corresponding to name.
Definition: pixdesc.c:1552
int srcW
Width of source luma/alpha planes.
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:205