FFmpeg: libavfilter/vsrc_mptestsrc.c Source File

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libavfilter

vsrc_mptestsrc.c

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1 /*

3 *

4 * This file is part of FFmpeg.

5 *

6 * FFmpeg is free software; you can redistribute it and/or modify

7 * it under the terms of the GNU General Public License as published by

8 * the Free Software Foundation; either version 2 of the License, or

9 * (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

14 * GNU General Public License for more details.

15 *

16 * You should have received a copy of the GNU General Public License along

17 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,

18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

19 */

21 /**

22 * @file

23 * MP test source, ported from MPlayer libmpcodecs/vf_test.c

24 */

26 #include "libavutil/avstring.h"

27 #include "libavutil/opt.h"

28 #include "libavutil/parseutils.h"

29 #include "libavutil/pixdesc.h"

30 #include "avfilter.h"

31 #include "internal.h"

32 #include "formats.h"

33 #include "video.h"

35 #define WIDTH 512

36 #define HEIGHT 512

38 enum test_type {

39 TEST_DC_LUMA,

40 TEST_DC_CHROMA,

41 TEST_FREQ_LUMA,

42 TEST_FREQ_CHROMA,

43 TEST_AMP_LUMA,

44 TEST_AMP_CHROMA,

45 TEST_CBP,

46 TEST_MV,

47 TEST_RING1,

48 TEST_RING2,

49 TEST_ALL,

50 TEST_NB

51 };

53 typedef struct MPTestContext {

54 const AVClass *class;

55 AVRational frame_rate;

56 int64_t pts, max_pts, duration;

57 int hsub, vsub;

58 enum test_type test;

59 } MPTestContext;

61 #define OFFSET(x) offsetof(MPTestContext, x)

62 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

63 static const AVOption mptestsrc_options[]= {

64 { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },

65 { "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },

66 { "duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS },

67 { "d", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS },

69 { "test", "set test to perform", OFFSET(test), AV_OPT_TYPE_INT, {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },

70 { "t", "set test to perform", OFFSET(test), AV_OPT_TYPE_INT, {.i64=TEST_ALL}, 0, INT_MAX, FLAGS, "test" },

71 { "dc_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },

72 { "dc_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_DC_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },

73 { "freq_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },

74 { "freq_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_FREQ_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },

75 { "amp_luma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_LUMA}, INT_MIN, INT_MAX, FLAGS, "test" },

76 { "amp_chroma", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_AMP_CHROMA}, INT_MIN, INT_MAX, FLAGS, "test" },

77 { "cbp", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_CBP}, INT_MIN, INT_MAX, FLAGS, "test" },

78 { "mv", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_MV}, INT_MIN, INT_MAX, FLAGS, "test" },

79 { "ring1", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING1}, INT_MIN, INT_MAX, FLAGS, "test" },

80 { "ring2", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_RING2}, INT_MIN, INT_MAX, FLAGS, "test" },

81 { "all", "", 0, AV_OPT_TYPE_CONST, {.i64=TEST_ALL}, INT_MIN, INT_MAX, FLAGS, "test" },

82 { NULL }

83 };

85 AVFILTER_DEFINE_CLASS(mptestsrc);

87 static double c[64];

89 static void init_idct(void)

90 {

91 int i, j;

93 for (i = 0; i < 8; i++) {

94 double s = i == 0 ? sqrt(0.125) : 0.5;

96 for (j = 0; j < 8; j++)

97 c[i*8+j] = s*cos((M_PI/8.0)*i*(j+0.5));

98 }

99 }

100

101 static void idct(uint8_t *dst, int dst_linesize, int src[64])

102 {

103 int i, j, k;

104 double tmp[64];

105

106 for (i = 0; i < 8; i++) {

107 for (j = 0; j < 8; j++) {

108 double sum = 0.0;

109

110 for (k = 0; k < 8; k++)

111 sum += c[k*8+j] * src[8*i+k];

112

113 tmp[8*i+j] = sum;

114 }

115 }

116

117 for (j = 0; j < 8; j++) {

118 for (i = 0; i < 8; i++) {

119 double sum = 0.0;

120

121 for (k = 0; k < 8; k++)

122 sum += c[k*8+i]*tmp[8*k+j];

123

124 dst[dst_linesize*i + j] = av_clip_uint8((int)floor(sum+0.5));

125 }

126 }

127 }

128

129 static void draw_dc(uint8_t *dst, int dst_linesize, int color, int w, int h)

130 {

131 int x, y;

132

133 for (y = 0; y < h; y++)

134 for (x = 0; x < w; x++)

135 dst[x + y*dst_linesize] = color;

136 }

137

138 static void draw_basis(uint8_t *dst, int dst_linesize, int amp, int freq, int dc)

139 {

140 int src[64];

141

142 memset(src, 0, 64*sizeof(int));

143 src[0] = dc;

144 if (amp)

145 src[freq] = amp;

146 idct(dst, dst_linesize, src);

147 }

148

149 static void draw_cbp(uint8_t *dst[3], int dst_linesize[3], int cbp, int amp, int dc)

150 {

151 if (cbp&1) draw_basis(dst[0] , dst_linesize[0], amp, 1, dc);

152 if (cbp&2) draw_basis(dst[0]+8 , dst_linesize[0], amp, 1, dc);

153 if (cbp&4) draw_basis(dst[0]+ 8*dst_linesize[0], dst_linesize[0], amp, 1, dc);

154 if (cbp&8) draw_basis(dst[0]+8+8*dst_linesize[0], dst_linesize[0], amp, 1, dc);

155 if (cbp&16) draw_basis(dst[1] , dst_linesize[1], amp, 1, dc);

156 if (cbp&32) draw_basis(dst[2] , dst_linesize[2], amp, 1, dc);

157 }

158

159 static void dc_test(uint8_t *dst, int dst_linesize, int w, int h, int off)

160 {

161 const int step = FFMAX(256/(w*h/256), 1);

162 int x, y, color = off;

163

164 for (y = 0; y < h; y += 16) {

165 for (x = 0; x < w; x += 16) {

166 draw_dc(dst + x + y*dst_linesize, dst_linesize, color, 8, 8);

167 color += step;

168 }

169 }

170 }

171

172 static void freq_test(uint8_t *dst, int dst_linesize, int off)

173 {

174 int x, y, freq = 0;

175

176 for (y = 0; y < 8*16; y += 16) {

177 for (x = 0; x < 8*16; x += 16) {

178 draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*(96+off), freq, 128*8);

179 freq++;

180 }

181 }

182 }

183

184 static void amp_test(uint8_t *dst, int dst_linesize, int off)

185 {

186 int x, y, amp = off;

187

188 for (y = 0; y < 16*16; y += 16) {

189 for (x = 0; x < 16*16; x += 16) {

190 draw_basis(dst + x + y*dst_linesize, dst_linesize, 4*amp, 1, 128*8);

191 amp++;

192 }

193 }

194 }

195

196 static void cbp_test(uint8_t *dst[3], int dst_linesize[3], int off)

197 {

198 int x, y, cbp = 0;

199

200 for (y = 0; y < 16*8; y += 16) {

201 for (x = 0; x < 16*8; x += 16) {

202 uint8_t *dst1[3];

203 dst1[0] = dst[0] + x*2 + y*2*dst_linesize[0];

204 dst1[1] = dst[1] + x + y* dst_linesize[1];

205 dst1[2] = dst[2] + x + y* dst_linesize[2];

206

207 draw_cbp(dst1, dst_linesize, cbp, (64+off)*4, 128*8);

208 cbp++;

209 }

210 }

211 }

212

213 static void mv_test(uint8_t *dst, int dst_linesize, int off)

214 {

215 int x, y;

216

217 for (y = 0; y < 16*16; y++) {

218 if (y&16)

219 continue;

220 for (x = 0; x < 16*16; x++)

221 dst[x + y*dst_linesize] = x + off*8/(y/32+1);

222 }

223 }

224

225 static void ring1_test(uint8_t *dst, int dst_linesize, int off)

226 {

227 int x, y, color = 0;

228

229 for (y = off; y < 16*16; y += 16) {

230 for (x = off; x < 16*16; x += 16) {

231 draw_dc(dst + x + y*dst_linesize, dst_linesize, ((x+y)&16) ? color : -color, 16, 16);

232 color++;

233 }

234 }

235 }

236

237 static void ring2_test(uint8_t *dst, int dst_linesize, int off)

238 {

239 int x, y;

240

241 for (y = 0; y < 16*16; y++) {

242 for (x = 0; x < 16*16; x++) {

243 double d = sqrt((x-8*16)*(x-8*16) + (y-8*16)*(y-8*16));

244 double r = d/20 - (int)(d/20);

245 if (r < off/30.0) {

246 dst[x + y*dst_linesize] = 255;

247 dst[x + y*dst_linesize+256] = 0;

248 } else {

249 dst[x + y*dst_linesize] = x;

250 dst[x + y*dst_linesize+256] = x;

251 }

252 }

253 }

254 }

255

256 static av_cold int init(AVFilterContext *ctx)

257 {

258 MPTestContext *test = ctx->priv;

259

260 test->max_pts = test->duration >= 0 ?

261 av_rescale_q(test->duration, AV_TIME_BASE_Q, av_inv_q(test->frame_rate)) : -1;

262 test->pts = 0;

263

264 av_log(ctx, AV_LOG_VERBOSE, "rate:%d/%d duration:%f\n",

265 test->frame_rate.num, test->frame_rate.den,

266 test->duration < 0 ? -1 : test->max_pts * av_q2d(av_inv_q(test->frame_rate)));

267 init_idct();

268

269 return 0;

270 }

271

272 static int config_props(AVFilterLink *outlink)

273 {

274 AVFilterContext *ctx = outlink->src;

275 MPTestContext *test = ctx->priv;

276 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(outlink->format);

277

278 test->hsub = pix_desc->log2_chroma_w;

279 test->vsub = pix_desc->log2_chroma_h;

280

281 outlink->w = WIDTH;

282 outlink->h = HEIGHT;

283 outlink->time_base = av_inv_q(test->frame_rate);

284

285 return 0;

286 }

287

288 static int query_formats(AVFilterContext *ctx)

289 {

290 static const enum AVPixelFormat pix_fmts[] = {

291 AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE

292 };

293

294 ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));

295 return 0;

296 }

297

298 static int request_frame(AVFilterLink *outlink)

299 {

300 MPTestContext *test = outlink->src->priv;

301 AVFrame *picref;

302 int w = WIDTH, h = HEIGHT,

303 cw = FF_CEIL_RSHIFT(w, test->hsub), ch = FF_CEIL_RSHIFT(h, test->vsub);

304 unsigned int frame = outlink->frame_count;

305 enum test_type tt = test->test;

306 int i;

307

308 if (test->max_pts >= 0 && test->pts > test->max_pts)

309 return AVERROR_EOF;

310 picref = ff_get_video_buffer(outlink, w, h);

311 if (!picref)

312 return AVERROR(ENOMEM);

313 picref->pts = test->pts++;

314

315 // clean image

316 for (i = 0; i < h; i++)

317 memset(picref->data[0] + i*picref->linesize[0], 0, w);

318 for (i = 0; i < ch; i++) {

319 memset(picref->data[1] + i*picref->linesize[1], 128, cw);

320 memset(picref->data[2] + i*picref->linesize[2], 128, cw);

321 }

322

323 if (tt == TEST_ALL && frame%30) /* draw a black frame at the beginning of each test */

324 tt = (frame/30)%(TEST_NB-1);

325

326 switch (tt) {

327 case TEST_DC_LUMA: dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;

328 case TEST_DC_CHROMA: dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;

329 case TEST_FREQ_LUMA: freq_test(picref->data[0], picref->linesize[0], frame%30); break;

330 case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;

331 case TEST_AMP_LUMA: amp_test(picref->data[0], picref->linesize[0], frame%30); break;

332 case TEST_AMP_CHROMA: amp_test(picref->data[1], picref->linesize[1], frame%30); break;

333 case TEST_CBP: cbp_test(picref->data , picref->linesize , frame%30); break;

334 case TEST_MV: mv_test(picref->data[0], picref->linesize[0], frame%30); break;

335 case TEST_RING1: ring1_test(picref->data[0], picref->linesize[0], frame%30); break;

336 case TEST_RING2: ring2_test(picref->data[0], picref->linesize[0], frame%30); break;

337 }

338

339 return ff_filter_frame(outlink, picref);

340 }

341

342 static const AVFilterPad mptestsrc_outputs[] = {

343 {

344 .name = "default",

345 .type = AVMEDIA_TYPE_VIDEO,

346 .request_frame = request_frame,

347 .config_props = config_props,

348 },

349 { NULL }

350 };

351

352 AVFilter ff_vsrc_mptestsrc = {

353 .name = "mptestsrc",

354 .description = NULL_IF_CONFIG_SMALL("Generate various test pattern."),

355 .priv_size = sizeof(MPTestContext),

356 .priv_class = &mptestsrc_class,

357 .init = init,

358 .query_formats = query_formats,

359 .inputs = NULL,

360 .outputs = mptestsrc_outputs,

361 };

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