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swscale-test.c
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1 /*
2  * Copyright (C) 2003-2011 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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(const uint8_t *src1, const 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] = {0};
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  res = av_image_fill_linesizes(srcStride, srcFormat, srcW);
110  if (res < 0) {
111  fprintf(stderr, "av_image_fill_linesizes failed\n");
112  goto end;
113  }
114  for (p = 0; p < 4; p++) {
115  srcStride[p] = FFALIGN(srcStride[p], 16);
116  if (srcStride[p])
117  src[p] = av_mallocz(srcStride[p] * srcH + 16);
118  if (srcStride[p] && !src[p]) {
119  perror("Malloc");
120  res = -1;
121  goto end;
122  }
123  }
124  srcContext = sws_getContext(w, h, AV_PIX_FMT_YUVA420P, srcW, srcH,
125  srcFormat, SWS_BILINEAR, NULL, NULL, NULL);
126  if (!srcContext) {
127  fprintf(stderr, "Failed to get %s ---> %s\n",
128  desc_yuva420p->name,
129  desc_src->name);
130  res = -1;
131  goto end;
132  }
133  sws_scale(srcContext, (const uint8_t * const*)ref, refStride, 0, h, src, srcStride);
134  sws_freeContext(srcContext);
135 
136  cur_srcFormat = srcFormat;
137  cur_srcW = srcW;
138  cur_srcH = srcH;
139  }
140 
141  res = av_image_fill_linesizes(dstStride, dstFormat, dstW);
142  if (res < 0) {
143  fprintf(stderr, "av_image_fill_linesizes failed\n");
144  goto end;
145  }
146 
147  for (i = 0; i < 4; i++) {
148  /* Image buffers passed into libswscale can be allocated any way you
149  * prefer, as long as they're aligned enough for the architecture, and
150  * they're freed appropriately (such as using av_free for buffers
151  * allocated with av_malloc). */
152  /* An extra 16 bytes is being allocated because some scalers may write
153  * out of bounds. */
154  dstStride[i] = FFALIGN(dstStride[i], 16);
155  if (dstStride[i])
156  dst[i] = av_mallocz(dstStride[i] * dstH + 16);
157  if (dstStride[i] && !dst[i]) {
158  perror("Malloc");
159  res = -1;
160 
161  goto end;
162  }
163  }
164 
165  dstContext = sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat,
166  flags, NULL, NULL, NULL);
167  if (!dstContext) {
168  fprintf(stderr, "Failed to get %s ---> %s\n",
169  desc_src->name, desc_dst->name);
170  res = -1;
171  goto end;
172  }
173 
174  printf(" %s %dx%d -> %s %3dx%3d flags=%2d",
175  desc_src->name, srcW, srcH,
176  desc_dst->name, dstW, dstH,
177  flags);
178  fflush(stdout);
179 
180  sws_scale(dstContext, (const uint8_t * const*)src, srcStride, 0, srcH, dst, dstStride);
181 
182  for (i = 0; i < 4 && dstStride[i]; i++)
183  crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), crc, dst[i],
184  dstStride[i] * dstH);
185 
186  if (r && crc == r->crc) {
187  ssdY = r->ssdY;
188  ssdU = r->ssdU;
189  ssdV = r->ssdV;
190  ssdA = r->ssdA;
191  } else {
192  for (i = 0; i < 4; i++) {
193  refStride[i] = FFALIGN(refStride[i], 16);
194  if (refStride[i])
195  out[i] = av_mallocz(refStride[i] * h);
196  if (refStride[i] && !out[i]) {
197  perror("Malloc");
198  res = -1;
199  goto end;
200  }
201  }
202  outContext = sws_getContext(dstW, dstH, dstFormat, w, h,
204  NULL, NULL, NULL);
205  if (!outContext) {
206  fprintf(stderr, "Failed to get %s ---> %s\n",
207  desc_dst->name,
208  desc_yuva420p->name);
209  res = -1;
210  goto end;
211  }
212  sws_scale(outContext, (const uint8_t * const*)dst, dstStride, 0, dstH, out, refStride);
213 
214  ssdY = getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
215  if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
216  //FIXME check that output is really gray
217  ssdU = getSSD(ref[1], out[1], refStride[1], refStride[1],
218  (w + 1) >> 1, (h + 1) >> 1);
219  ssdV = getSSD(ref[2], out[2], refStride[2], refStride[2],
220  (w + 1) >> 1, (h + 1) >> 1);
221  }
222  if (isALPHA(srcFormat) && isALPHA(dstFormat))
223  ssdA = getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
224 
225  ssdY /= w * h;
226  ssdU /= w * h / 4;
227  ssdV /= w * h / 4;
228  ssdA /= w * h;
229 
230  sws_freeContext(outContext);
231 
232  for (i = 0; i < 4; i++)
233  if (refStride[i])
234  av_free(out[i]);
235  }
236 
237  printf(" CRC=%08x SSD=%5"PRId64 ",%5"PRId64 ",%5"PRId64 ",%5"PRId64 "\n",
238  crc, ssdY, ssdU, ssdV, ssdA);
239 
240 end:
241  sws_freeContext(dstContext);
242 
243  for (i = 0; i < 4; i++)
244  if (dstStride[i])
245  av_free(dst[i]);
246 
247  return res;
248 }
249 
250 static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h,
251  enum AVPixelFormat srcFormat_in,
252  enum AVPixelFormat dstFormat_in)
253 {
255  SWS_X, SWS_POINT, SWS_AREA, 0 };
256  const int srcW = w;
257  const int srcH = h;
258  const int dstW[] = { srcW - srcW / 3, srcW, srcW + srcW / 3, 0 };
259  const int dstH[] = { srcH - srcH / 3, srcH, srcH + srcH / 3, 0 };
261  const AVPixFmtDescriptor *desc_src, *desc_dst;
262 
263  for (srcFormat = srcFormat_in != AV_PIX_FMT_NONE ? srcFormat_in : 0;
264  srcFormat < AV_PIX_FMT_NB; srcFormat++) {
265  if (!sws_isSupportedInput(srcFormat) ||
266  !sws_isSupportedOutput(srcFormat))
267  continue;
268 
269  desc_src = av_pix_fmt_desc_get(srcFormat);
270 
271  for (dstFormat = dstFormat_in != AV_PIX_FMT_NONE ? dstFormat_in : 0;
272  dstFormat < AV_PIX_FMT_NB; dstFormat++) {
273  int i, j, k;
274  int res = 0;
275 
276  if (!sws_isSupportedInput(dstFormat) ||
277  !sws_isSupportedOutput(dstFormat))
278  continue;
279 
280  desc_dst = av_pix_fmt_desc_get(dstFormat);
281 
282  printf("%s -> %s\n", desc_src->name, desc_dst->name);
283  fflush(stdout);
284 
285  for (k = 0; flags[k] && !res; k++)
286  for (i = 0; dstW[i] && !res; i++)
287  for (j = 0; dstH[j] && !res; j++)
288  res = doTest(ref, refStride, w, h,
289  srcFormat, dstFormat,
290  srcW, srcH, dstW[i], dstH[j], flags[k],
291  NULL);
292  if (dstFormat_in != AV_PIX_FMT_NONE)
293  break;
294  }
295  if (srcFormat_in != AV_PIX_FMT_NONE)
296  break;
297  }
298 }
299 
300 static int fileTest(uint8_t *ref[4], int refStride[4], int w, int h, FILE *fp,
301  enum AVPixelFormat srcFormat_in,
302  enum AVPixelFormat dstFormat_in)
303 {
304  char buf[256];
305 
306  while (fgets(buf, sizeof(buf), fp)) {
307  struct Results r;
308  enum AVPixelFormat srcFormat;
309  char srcStr[12];
310  int srcW, srcH;
311  enum AVPixelFormat dstFormat;
312  char dstStr[12];
313  int dstW, dstH;
314  int flags;
315  int ret;
316 
317  ret = sscanf(buf,
318  " %12s %dx%d -> %12s %dx%d flags=%d CRC=%x"
319  " SSD=%"SCNd64 ", %"SCNd64 ", %"SCNd64 ", %"SCNd64 "\n",
320  srcStr, &srcW, &srcH, dstStr, &dstW, &dstH,
321  &flags, &r.crc, &r.ssdY, &r.ssdU, &r.ssdV, &r.ssdA);
322  if (ret != 12) {
323  srcStr[0] = dstStr[0] = 0;
324  ret = sscanf(buf, "%12s -> %12s\n", srcStr, dstStr);
325  }
326 
327  srcFormat = av_get_pix_fmt(srcStr);
328  dstFormat = av_get_pix_fmt(dstStr);
329 
330  if (srcFormat == AV_PIX_FMT_NONE || dstFormat == AV_PIX_FMT_NONE ||
331  srcW > 8192U || srcH > 8192U || dstW > 8192U || dstH > 8192U) {
332  fprintf(stderr, "malformed input file\n");
333  return -1;
334  }
335  if ((srcFormat_in != AV_PIX_FMT_NONE && srcFormat_in != srcFormat) ||
336  (dstFormat_in != AV_PIX_FMT_NONE && dstFormat_in != dstFormat))
337  continue;
338  if (ret != 12) {
339  printf("%s", buf);
340  continue;
341  }
342 
343  doTest(ref, refStride, w, h,
344  srcFormat, dstFormat,
345  srcW, srcH, dstW, dstH, flags,
346  &r);
347  }
348 
349  return 0;
350 }
351 
352 #define W 96
353 #define H 96
354 
355 int main(int argc, char **argv)
356 {
357  enum AVPixelFormat srcFormat = AV_PIX_FMT_NONE;
358  enum AVPixelFormat dstFormat = AV_PIX_FMT_NONE;
359  uint8_t *rgb_data = av_malloc(W * H * 4);
360  const uint8_t * const rgb_src[4] = { rgb_data, NULL, NULL, NULL };
361  int rgb_stride[4] = { 4 * W, 0, 0, 0 };
362  uint8_t *data = av_malloc(4 * W * H);
363  uint8_t *src[4] = { data, data + W * H, data + W * H * 2, data + W * H * 3 };
364  int stride[4] = { W, W, W, W };
365  int x, y;
366  struct SwsContext *sws;
367  AVLFG rand;
368  int res = -1;
369  int i;
370  FILE *fp = NULL;
371 
372  if (!rgb_data || !data)
373  return -1;
374 
375  for (i = 1; i < argc; i += 2) {
376  if (argv[i][0] != '-' || i + 1 == argc)
377  goto bad_option;
378  if (!strcmp(argv[i], "-ref")) {
379  fp = fopen(argv[i + 1], "r");
380  if (!fp) {
381  fprintf(stderr, "could not open '%s'\n", argv[i + 1]);
382  goto error;
383  }
384  } else if (!strcmp(argv[i], "-src")) {
385  srcFormat = av_get_pix_fmt(argv[i + 1]);
386  if (srcFormat == AV_PIX_FMT_NONE) {
387  fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
388  return -1;
389  }
390  } else if (!strcmp(argv[i], "-dst")) {
391  dstFormat = av_get_pix_fmt(argv[i + 1]);
392  if (dstFormat == AV_PIX_FMT_NONE) {
393  fprintf(stderr, "invalid pixel format %s\n", argv[i + 1]);
394  return -1;
395  }
396  } else {
397 bad_option:
398  fprintf(stderr, "bad option or argument missing (%s)\n", argv[i]);
399  goto error;
400  }
401  }
402 
403  sws = sws_getContext(W / 12, H / 12, AV_PIX_FMT_RGB32, W, H,
405 
406  av_lfg_init(&rand, 1);
407 
408  for (y = 0; y < H; y++)
409  for (x = 0; x < W * 4; x++)
410  rgb_data[ x + y * 4 * W] = av_lfg_get(&rand);
411  sws_scale(sws, rgb_src, rgb_stride, 0, H / 12, src, stride);
412  sws_freeContext(sws);
413  av_free(rgb_data);
414 
415  if(fp) {
416  res = fileTest(src, stride, W, H, fp, srcFormat, dstFormat);
417  fclose(fp);
418  } else {
419  selfTest(src, stride, W, H, srcFormat, dstFormat);
420  res = 0;
421  }
422 error:
423  av_free(data);
424 
425  return res;
426 }
Definition: lfg.h:25
#define NULL
Definition: coverity.c:32
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2222
#define SWS_X
Definition: swscale.h:59
#define SWS_BICUBIC
Definition: swscale.h:58
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
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:300
memory handling functions
external API header
uint64_t ssdY
Definition: swscale-test.c:72
int main(int argc, char **argv)
Definition: swscale-test.c:355
int srcH
Height of source luma/alpha planes.
#define SWS_BILINEAR
Definition: swscale.h:57
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
uint8_t
#define av_malloc(s)
#define H
Definition: swscale-test.c:353
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
#define SWS_FAST_BILINEAR
Definition: swscale.h:56
#define W
Definition: swscale-test.c:352
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:1854
external API header
enum AVPixelFormat dstFormat
Destination pixel format.
#define isALPHA(x)
Definition: swscale-test.c:49
#define FFALIGN(x, a)
Definition: macros.h:48
static int ref[MAX_W *MAX_W]
const char * name
Definition: pixdesc.h:82
int dstH
Height of destination luma/alpha planes.
#define U(x)
Definition: vp56_arith.h:37
#define sws_isSupportedOutput(x)
const char * r
Definition: vf_curves.c:107
static uint64_t getSSD(const uint8_t *src1, const uint8_t *src2, int stride1, int stride2, int w, int h)
Definition: swscale-test.c:56
uint64_t ssdA
Definition: swscale-test.c:75
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:357
void sws_freeContext(struct SwsContext *swsContext)
Free the swscaler context swsContext.
Definition: utils.c:2274
#define sws_isSupportedInput(x)
#define src
Definition: vp9dsp.c:530
int dstW
Width of destination luma/alpha planes.
FILE * out
Definition: movenc-test.c:54
uint32_t crc
Definition: swscale-test.c:76
#define src1
Definition: h264pred.c:139
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:318
#define fp
Definition: regdef.h:44
int attribute_align_arg sws_scale(struct SwsContext *c, const uint8_t *const srcSlice[], const int srcStride[], int srcSliceY, int srcSliceH, uint8_t *const dst[], const int dstStride[])
swscale wrapper, so we don't need to export the SwsContext.
Definition: swscale.c:753
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
Definition: lfg.h:38
void * buf
Definition: avisynth_c.h:553
uint64_t ssdU
Definition: swscale-test.c:73
#define SWS_AREA
Definition: swscale.h:61
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:88
#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:60
static int flags
Definition: cpu.c:47
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:343
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
enum AVPixelFormat srcFormat
Source pixel format.
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
#define av_free(p)
number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of...
Definition: pixfmt.h:306
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:250
#define av_freep(p)
enum AVPixelFormat av_get_pix_fmt(const char *name)
Return the pixel format corresponding to name.
Definition: pixdesc.c:2150
int srcW
Width of source luma/alpha planes.
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
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:252