FFmpeg: libavcodec/libvpxenc.c Source File

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libvpxenc.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

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 */

21 /**

22 * @file

23 * VP8 encoder support via libvpx

24 */

26 #define VPX_DISABLE_CTRL_TYPECHECKS 1

27 #define VPX_CODEC_DISABLE_COMPAT 1

28 #include <vpx/vpx_encoder.h>

29 #include <vpx/vp8cx.h>

31 #include "avcodec.h"

32 #include "internal.h"

33 #include "libavutil/avassert.h"

34 #include "libvpx.h"

35 #include "libavutil/base64.h"

36 #include "libavutil/common.h"

37 #include "libavutil/intreadwrite.h"

38 #include "libavutil/mathematics.h"

39 #include "libavutil/opt.h"

41 /**

42 * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h.

43 * One encoded frame returned from the library.

44 */

45 struct FrameListData {

46 void *buf; /**< compressed data buffer */

47 size_t sz; /**< length of compressed data */

48 void *buf_alpha;

49 size_t sz_alpha;

50 int64_t pts; /**< time stamp to show frame

51 (in timebase units) */

52 unsigned long duration; /**< duration to show frame

53 (in timebase units) */

54 uint32_t flags; /**< flags for this frame */

55 uint64_t sse[4];

56 int have_sse; /**< true if we have pending sse[] */

57 uint64_t frame_number;

58 struct FrameListData *next;

59 };

61 typedef struct VP8EncoderContext {

62 AVClass *class;

63 struct vpx_codec_ctx encoder;

64 struct vpx_image rawimg;

65 struct vpx_codec_ctx encoder_alpha;

66 struct vpx_image rawimg_alpha;

67 uint8_t is_alpha;

68 struct vpx_fixed_buf twopass_stats;

69 int deadline; //i.e., RT/GOOD/BEST

70 uint64_t sse[4];

71 int have_sse; /**< true if we have pending sse[] */

72 uint64_t frame_number;

73 struct FrameListData *coded_frame_list;

75 int cpu_used;

76 /**

77 * VP8 specific flags, see VP8F_* below.

78 */

79 int flags;

80 #define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links

81 #define VP8F_AUTO_ALT_REF 0x00000002 ///< Enable automatic alternate reference frame generation

83 int auto_alt_ref;

85 int arnr_max_frames;

86 int arnr_strength;

87 int arnr_type;

89 int lag_in_frames;

90 int error_resilient;

91 int crf;

92 int max_intra_rate;

94 // VP9-only

95 int lossless;

96 int tile_columns;

97 int tile_rows;

98 int frame_parallel;

99 int aq_mode;

100 } VP8Context;

101

102 /** String mappings for enum vp8e_enc_control_id */

103 static const char *const ctlidstr[] = {

104 [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY",

105 [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE",

106 [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE",

107 [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP",

108 [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP",

109 [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE",

110 [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED",

111 [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF",

112 [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",

113 [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS",

114 [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD",

115 [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS",

116 [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER",

117 [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES",

118 [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH",

119 [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE",

120 [VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL",

121 [VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT",

122 #if CONFIG_LIBVPX_VP9_ENCODER

123 [VP9E_SET_LOSSLESS] = "VP9E_SET_LOSSLESS",

124 [VP9E_SET_TILE_COLUMNS] = "VP9E_SET_TILE_COLUMNS",

125 [VP9E_SET_TILE_ROWS] = "VP9E_SET_TILE_ROWS",

126 [VP9E_SET_FRAME_PARALLEL_DECODING] = "VP9E_SET_FRAME_PARALLEL_DECODING",

127 [VP9E_SET_AQ_MODE] = "VP9E_SET_AQ_MODE",

128 #endif

129 };

130

131 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)

132 {

133 VP8Context *ctx = avctx->priv_data;

134 const char *error = vpx_codec_error(&ctx->encoder);

135 const char *detail = vpx_codec_error_detail(&ctx->encoder);

136

137 av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);

138 if (detail)

139 av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail);

140 }

141

142 static av_cold void dump_enc_cfg(AVCodecContext *avctx,

143 const struct vpx_codec_enc_cfg *cfg)

144 {

145 int width = -30;

146 int level = AV_LOG_DEBUG;

147

148 av_log(avctx, level, "vpx_codec_enc_cfg\n");

149 av_log(avctx, level, "generic settings\n"

150 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n"

151 " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n",

152 width, "g_usage:", cfg->g_usage,

153 width, "g_threads:", cfg->g_threads,

154 width, "g_profile:", cfg->g_profile,

155 width, "g_w:", cfg->g_w,

156 width, "g_h:", cfg->g_h,

157 width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den,

158 width, "g_error_resilient:", cfg->g_error_resilient,

159 width, "g_pass:", cfg->g_pass,

160 width, "g_lag_in_frames:", cfg->g_lag_in_frames);

161 av_log(avctx, level, "rate control settings\n"

162 " %*s%u\n %*s%u\n %*s%u\n %*s%u\n"

163 " %*s%d\n %*s%p(%"SIZE_SPECIFIER ")\n %*s%u\n",

164 width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh,

165 width, "rc_resize_allowed:", cfg->rc_resize_allowed,

166 width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh,

167 width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,

168 width, "rc_end_usage:", cfg->rc_end_usage,

169 width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,

170 width, "rc_target_bitrate:", cfg->rc_target_bitrate);

171 av_log(avctx, level, "quantizer settings\n"

172 " %*s%u\n %*s%u\n",

173 width, "rc_min_quantizer:", cfg->rc_min_quantizer,

174 width, "rc_max_quantizer:", cfg->rc_max_quantizer);

175 av_log(avctx, level, "bitrate tolerance\n"

176 " %*s%u\n %*s%u\n",

177 width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,

178 width, "rc_overshoot_pct:", cfg->rc_overshoot_pct);

179 av_log(avctx, level, "decoder buffer model\n"

180 " %*s%u\n %*s%u\n %*s%u\n",

181 width, "rc_buf_sz:", cfg->rc_buf_sz,

182 width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,

183 width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);

184 av_log(avctx, level, "2 pass rate control settings\n"

185 " %*s%u\n %*s%u\n %*s%u\n",

186 width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct,

187 width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,

188 width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);

189 av_log(avctx, level, "keyframing settings\n"

190 " %*s%d\n %*s%u\n %*s%u\n",

191 width, "kf_mode:", cfg->kf_mode,

192 width, "kf_min_dist:", cfg->kf_min_dist,

193 width, "kf_max_dist:", cfg->kf_max_dist);

194 av_log(avctx, level, "\n");

195 }

196

197 static void coded_frame_add(void *list, struct FrameListData *cx_frame)

198 {

199 struct FrameListData **p = list;

200

201 while (*p)

202 p = &(*p)->next;

203 *p = cx_frame;

204 cx_frame->next = NULL;

205 }

206

207 static av_cold void free_coded_frame(struct FrameListData *cx_frame)

208 {

209 av_freep(&cx_frame->buf);

210 if (cx_frame->buf_alpha)

211 av_freep(&cx_frame->buf_alpha);

212 av_freep(&cx_frame);

213 }

214

215 static av_cold void free_frame_list(struct FrameListData *list)

216 {

217 struct FrameListData *p = list;

218

219 while (p) {

220 list = list->next;

221 free_coded_frame(p);

222 p = list;

223 }

224 }

225

226 static av_cold int codecctl_int(AVCodecContext *avctx,

227 enum vp8e_enc_control_id id, int val)

228 {

229 VP8Context *ctx = avctx->priv_data;

230 char buf[80];

231 int width = -30;

232 int res;

233

234 snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);

235 av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val);

236

237 res = vpx_codec_control(&ctx->encoder, id, val);

238 if (res != VPX_CODEC_OK) {

239 snprintf(buf, sizeof(buf), "Failed to set %s codec control",

240 ctlidstr[id]);

241 log_encoder_error(avctx, buf);

242 }

243

244 return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);

245 }

246

247 static av_cold int vp8_free(AVCodecContext *avctx)

248 {

249 VP8Context *ctx = avctx->priv_data;

250

251 vpx_codec_destroy(&ctx->encoder);

252 if (ctx->is_alpha)

253 vpx_codec_destroy(&ctx->encoder_alpha);

254 av_freep(&ctx->twopass_stats.buf);

255 av_freep(&avctx->coded_frame);

256 av_freep(&avctx->stats_out);

257 free_frame_list(ctx->coded_frame_list);

258 return 0;

259 }

260

261 static av_cold int vpx_init(AVCodecContext *avctx,

262 const struct vpx_codec_iface *iface)

263 {

264 VP8Context *ctx = avctx->priv_data;

265 struct vpx_codec_enc_cfg enccfg;

266 struct vpx_codec_enc_cfg enccfg_alpha;

267 vpx_codec_flags_t flags = (avctx->flags & CODEC_FLAG_PSNR) ? VPX_CODEC_USE_PSNR : 0;

268 int res;

269

270 av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());

271 av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());

272

273 if (avctx->pix_fmt == AV_PIX_FMT_YUVA420P)

274 ctx->is_alpha = 1;

275

276 if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {

277 av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",

278 vpx_codec_err_to_string(res));

279 return AVERROR(EINVAL);

280 }

281

282 if(!avctx->bit_rate)

283 if(avctx->rc_max_rate || avctx->rc_buffer_size || avctx->rc_initial_buffer_occupancy) {

284 av_log( avctx, AV_LOG_ERROR, "Rate control parameters set without a bitrate\n");

285 return AVERROR(EINVAL);

286 }

287

288 dump_enc_cfg(avctx, &enccfg);

289

290 enccfg.g_w = avctx->width;

291 enccfg.g_h = avctx->height;

292 enccfg.g_timebase.num = avctx->time_base.num;

293 enccfg.g_timebase.den = avctx->time_base.den;

294 enccfg.g_threads = avctx->thread_count;

295 enccfg.g_lag_in_frames= ctx->lag_in_frames;

296

297 if (avctx->flags & CODEC_FLAG_PASS1)

298 enccfg.g_pass = VPX_RC_FIRST_PASS;

299 else if (avctx->flags & CODEC_FLAG_PASS2)

300 enccfg.g_pass = VPX_RC_LAST_PASS;

301 else

302 enccfg.g_pass = VPX_RC_ONE_PASS;

303

304 if (avctx->rc_min_rate == avctx->rc_max_rate &&

305 avctx->rc_min_rate == avctx->bit_rate && avctx->bit_rate) {

306 enccfg.rc_end_usage = VPX_CBR;

307 } else if (ctx->crf >= 0) {

308 enccfg.rc_end_usage = VPX_CQ;

309 #if CONFIG_LIBVPX_VP9_ENCODER

310 if (!avctx->bit_rate && avctx->codec_id == AV_CODEC_ID_VP9)

311 enccfg.rc_end_usage = VPX_Q;

312 #endif

313 }

314

315 if (avctx->bit_rate) {

316 enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,

317 AV_ROUND_NEAR_INF);

318 #if CONFIG_LIBVPX_VP9_ENCODER

319 } else if (enccfg.rc_end_usage == VPX_Q) {

320 #endif

321 } else {

322 if (enccfg.rc_end_usage == VPX_CQ) {

323 enccfg.rc_target_bitrate = 1000000;

324 } else {

325 avctx->bit_rate = enccfg.rc_target_bitrate * 1000;

326 av_log(avctx, AV_LOG_WARNING,

327 "Neither bitrate nor constrained quality specified, using default bitrate of %dkbit/sec\n",

328 enccfg.rc_target_bitrate);

329 }

330 }

331

332 if (avctx->qmin >= 0)

333 enccfg.rc_min_quantizer = avctx->qmin;

334 if (avctx->qmax >= 0)

335 enccfg.rc_max_quantizer = avctx->qmax;

336

337 if (enccfg.rc_end_usage == VPX_CQ

338 #if CONFIG_LIBVPX_VP9_ENCODER

339 || enccfg.rc_end_usage == VPX_Q

340 #endif

341 ) {

342 if (ctx->crf < enccfg.rc_min_quantizer || ctx->crf > enccfg.rc_max_quantizer) {

343 av_log(avctx, AV_LOG_ERROR,

344 "CQ level %d must be between minimum and maximum quantizer value (%d-%d)\n",

345 ctx->crf, enccfg.rc_min_quantizer, enccfg.rc_max_quantizer);

346 return AVERROR(EINVAL);

347 }

348 }

349

350 enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;

351

352 //0-100 (0 => CBR, 100 => VBR)

353 enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100);

354 if (avctx->bit_rate)

355 enccfg.rc_2pass_vbr_minsection_pct =

356 avctx->rc_min_rate * 100LL / avctx->bit_rate;

357 if (avctx->rc_max_rate)

358 enccfg.rc_2pass_vbr_maxsection_pct =

359 avctx->rc_max_rate * 100LL / avctx->bit_rate;

360

361 if (avctx->rc_buffer_size)

362 enccfg.rc_buf_sz =

363 avctx->rc_buffer_size * 1000LL / avctx->bit_rate;

364 if (avctx->rc_initial_buffer_occupancy)

365 enccfg.rc_buf_initial_sz =

366 avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;

367 enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6;

368 enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100);

369

370 //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO

371 if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)

372 enccfg.kf_min_dist = avctx->keyint_min;

373 if (avctx->gop_size >= 0)

374 enccfg.kf_max_dist = avctx->gop_size;

375

376 if (enccfg.g_pass == VPX_RC_FIRST_PASS)

377 enccfg.g_lag_in_frames = 0;

378 else if (enccfg.g_pass == VPX_RC_LAST_PASS) {

379 int decode_size;

380

381 if (!avctx->stats_in) {

382 av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");

383 return AVERROR_INVALIDDATA;

384 }

385

386 ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4;

387 ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);

388 if (!ctx->twopass_stats.buf) {

389 av_log(avctx, AV_LOG_ERROR,

390 "Stat buffer alloc (%"SIZE_SPECIFIER " bytes) failed\n",

391 ctx->twopass_stats.sz);

392 return AVERROR(ENOMEM);

393 }

394 decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,

395 ctx->twopass_stats.sz);

396 if (decode_size < 0) {

397 av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");

398 return AVERROR_INVALIDDATA;

399 }

400

401 ctx->twopass_stats.sz = decode_size;

402 enccfg.rc_twopass_stats_in = ctx->twopass_stats;

403 }

404

405 /* 0-3: For non-zero values the encoder increasingly optimizes for reduced

406 complexity playback on low powered devices at the expense of encode

407 quality. */

408 if (avctx->profile != FF_PROFILE_UNKNOWN)

409 enccfg.g_profile = avctx->profile;

410

411 enccfg.g_error_resilient = ctx->error_resilient || ctx->flags & VP8F_ERROR_RESILIENT;

412

413 dump_enc_cfg(avctx, &enccfg);

414 /* Construct Encoder Context */

415 res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, flags);

416 if (res != VPX_CODEC_OK) {

417 log_encoder_error(avctx, "Failed to initialize encoder");

418 return AVERROR(EINVAL);

419 }

420

421 if (ctx->is_alpha) {

422 enccfg_alpha = enccfg;

423 res = vpx_codec_enc_init(&ctx->encoder_alpha, iface, &enccfg_alpha, flags);

424 if (res != VPX_CODEC_OK) {

425 log_encoder_error(avctx, "Failed to initialize alpha encoder");

426 return AVERROR(EINVAL);

427 }

428 }

429

430 //codec control failures are currently treated only as warnings

431 av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");

432 codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used);

433 if (ctx->flags & VP8F_AUTO_ALT_REF)

434 ctx->auto_alt_ref = 1;

435 if (ctx->auto_alt_ref >= 0)

436 codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);

437 if (ctx->arnr_max_frames >= 0)

438 codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames);

439 if (ctx->arnr_strength >= 0)

440 codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength);

441 if (ctx->arnr_type >= 0)

442 codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type);

443 codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);

444 if (avctx->codec_id == AV_CODEC_ID_VP8)

445 codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices));

446 codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold);

447 if (ctx->crf >= 0)

448 codecctl_int(avctx, VP8E_SET_CQ_LEVEL, ctx->crf);

449 if (ctx->max_intra_rate >= 0)

450 codecctl_int(avctx, VP8E_SET_MAX_INTRA_BITRATE_PCT, ctx->max_intra_rate);

451

452 #if CONFIG_LIBVPX_VP9_ENCODER

453 if (avctx->codec_id == AV_CODEC_ID_VP9) {

454 if (ctx->lossless >= 0)

455 codecctl_int(avctx, VP9E_SET_LOSSLESS, ctx->lossless);

456 if (ctx->tile_columns >= 0)

457 codecctl_int(avctx, VP9E_SET_TILE_COLUMNS, ctx->tile_columns);

458 if (ctx->tile_rows >= 0)

459 codecctl_int(avctx, VP9E_SET_TILE_ROWS, ctx->tile_rows);

460 if (ctx->frame_parallel >= 0)

461 codecctl_int(avctx, VP9E_SET_FRAME_PARALLEL_DECODING, ctx->frame_parallel);

462 if (ctx->aq_mode >= 0)

463 codecctl_int(avctx, VP9E_SET_AQ_MODE, ctx->aq_mode);

464 }

465 #endif

466

467 av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);

468

469 //provide dummy value to initialize wrapper, values will be updated each _encode()

470 vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,

471 (unsigned char*)1);

472

473 if (ctx->is_alpha)

474 vpx_img_wrap(&ctx->rawimg_alpha, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,

475 (unsigned char*)1);

476

477 avctx->coded_frame = av_frame_alloc();

478 if (!avctx->coded_frame) {

479 av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");

480 vp8_free(avctx);

481 return AVERROR(ENOMEM);

482 }

483 return 0;

484 }

485

486 static inline void cx_pktcpy(struct FrameListData *dst,

487 const struct vpx_codec_cx_pkt *src,

488 const struct vpx_codec_cx_pkt *src_alpha,

489 VP8Context *ctx)

490 {

491 dst->pts = src->data.frame.pts;

492 dst->duration = src->data.frame.duration;

493 dst->flags = src->data.frame.flags;

494 dst->sz = src->data.frame.sz;

495 dst->buf = src->data.frame.buf;

496 dst->have_sse = 0;

497 /* For alt-ref frame, don't store PSNR or increment frame_number */

498 if (!(dst->flags & VPX_FRAME_IS_INVISIBLE)) {

499 dst->frame_number = ++ctx->frame_number;

500 dst->have_sse = ctx->have_sse;

501 if (ctx->have_sse) {

502 /* associate last-seen SSE to the frame. */

503 /* Transfers ownership from ctx to dst. */

504 /* WARNING! This makes the assumption that PSNR_PKT comes

505 just before the frame it refers to! */

506 memcpy(dst->sse, ctx->sse, sizeof(dst->sse));

507 ctx->have_sse = 0;

508 }

509 } else {

510 dst->frame_number = -1; /* sanity marker */

511 }

512 if (src_alpha) {

513 dst->buf_alpha = src_alpha->data.frame.buf;

514 dst->sz_alpha = src_alpha->data.frame.sz;

515 }

516 else {

517 dst->buf_alpha = NULL;

518 dst->sz_alpha = 0;

519 }

520 }

521

522 /**

523 * Store coded frame information in format suitable for return from encode2().

524 *

525 * Write information from @a cx_frame to @a pkt

526 * @return packet data size on success

527 * @return a negative AVERROR on error

528 */

529 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,

530 AVPacket *pkt, AVFrame *coded_frame)

531 {

532 int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz);

533 uint8_t *side_data;

534 if (ret >= 0) {

535 memcpy(pkt->data, cx_frame->buf, pkt->size);

536 pkt->pts = pkt->dts = cx_frame->pts;

537 coded_frame->pts = cx_frame->pts;

538 coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);

539

540 if (coded_frame->key_frame) {

541 coded_frame->pict_type = AV_PICTURE_TYPE_I;

542 pkt->flags |= AV_PKT_FLAG_KEY;

543 } else

544 coded_frame->pict_type = AV_PICTURE_TYPE_P;

545

546 if (cx_frame->have_sse) {

547 int i;

548 /* Beware of the Y/U/V/all order! */

549 coded_frame->error[0] = cx_frame->sse[1];

550 coded_frame->error[1] = cx_frame->sse[2];

551 coded_frame->error[2] = cx_frame->sse[3];

552 coded_frame->error[3] = 0; // alpha

553 for (i = 0; i < 4; ++i) {

554 avctx->error[i] += coded_frame->error[i];

555 }

556 cx_frame->have_sse = 0;

557 }

558 if (cx_frame->sz_alpha > 0) {

559 side_data = av_packet_new_side_data(pkt,

560 AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,

561 cx_frame->sz_alpha + 8);

562 if(!side_data) {

563 av_free_packet(pkt);

564 av_free(pkt);

565 return AVERROR(ENOMEM);

566 }

567 AV_WB64(side_data, 1);

568 memcpy(side_data + 8, cx_frame->buf_alpha, cx_frame->sz_alpha);

569 }

570 } else {

571 return ret;

572 }

573 return pkt->size;

574 }

575

576 /**

577 * Queue multiple output frames from the encoder, returning the front-most.

578 * In cases where vpx_codec_get_cx_data() returns more than 1 frame append

579 * the frame queue. Return the head frame if available.

580 * @return Stored frame size

581 * @return AVERROR(EINVAL) on output size error

582 * @return AVERROR(ENOMEM) on coded frame queue data allocation error

583 */

584 static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,

585 AVFrame *coded_frame)

586 {

587 VP8Context *ctx = avctx->priv_data;

588 const struct vpx_codec_cx_pkt *pkt;

589 const struct vpx_codec_cx_pkt *pkt_alpha = NULL;

590 const void *iter = NULL;

591 const void *iter_alpha = NULL;

592 int size = 0;

593

594 if (ctx->coded_frame_list) {

595 struct FrameListData *cx_frame = ctx->coded_frame_list;

596 /* return the leading frame if we've already begun queueing */

597 size = storeframe(avctx, cx_frame, pkt_out, coded_frame);

598 if (size < 0)

599 return size;

600 ctx->coded_frame_list = cx_frame->next;

601 free_coded_frame(cx_frame);

602 }

603

604 /* consume all available output from the encoder before returning. buffers

605 are only good through the next vpx_codec call */

606 while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter)) &&

607 (!ctx->is_alpha ||

608 (ctx->is_alpha && (pkt_alpha = vpx_codec_get_cx_data(&ctx->encoder_alpha, &iter_alpha))))) {

609 switch (pkt->kind) {

610 case VPX_CODEC_CX_FRAME_PKT:

611 if (!size) {

612 struct FrameListData cx_frame;

613

614 /* avoid storing the frame when the list is empty and we haven't yet

615 provided a frame for output */

616 av_assert0(!ctx->coded_frame_list);

617 cx_pktcpy(&cx_frame, pkt, pkt_alpha, ctx);

618 size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);

619 if (size < 0)

620 return size;

621 } else {

622 struct FrameListData *cx_frame =

623 av_malloc(sizeof(struct FrameListData));

624

625 if (!cx_frame) {

626 av_log(avctx, AV_LOG_ERROR,

627 "Frame queue element alloc failed\n");

628 return AVERROR(ENOMEM);

629 }

630 cx_pktcpy(cx_frame, pkt, pkt_alpha, ctx);

631 cx_frame->buf = av_malloc(cx_frame->sz);

632

633 if (!cx_frame->buf) {

634 av_log(avctx, AV_LOG_ERROR,

635 "Data buffer alloc (%"SIZE_SPECIFIER " bytes) failed\n",

636 cx_frame->sz);

637 av_free(cx_frame);

638 return AVERROR(ENOMEM);

639 }

640 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);

641 if (ctx->is_alpha) {

642 cx_frame->buf_alpha = av_malloc(cx_frame->sz_alpha);

643 if (!cx_frame->buf_alpha) {

644 av_log(avctx, AV_LOG_ERROR,

645 "Data buffer alloc (%"SIZE_SPECIFIER " bytes) failed\n",

646 cx_frame->sz_alpha);

647 av_free(cx_frame);

648 return AVERROR(ENOMEM);

649 }

650 memcpy(cx_frame->buf_alpha, pkt_alpha->data.frame.buf, pkt_alpha->data.frame.sz);

651 }

652 coded_frame_add(&ctx->coded_frame_list, cx_frame);

653 }

654 break;

655 case VPX_CODEC_STATS_PKT: {

656 struct vpx_fixed_buf *stats = &ctx->twopass_stats;

657 int err;

658 if ((err = av_reallocp(&stats->buf,

659 stats->sz +

660 pkt->data.twopass_stats.sz)) < 0) {

661 stats->sz = 0;

662 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");

663 return err;

664 }

665 memcpy((uint8_t*)stats->buf + stats->sz,

666 pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);

667 stats->sz += pkt->data.twopass_stats.sz;

668 break;

669 }

670 case VPX_CODEC_PSNR_PKT:

671 av_assert0(!ctx->have_sse);

672 ctx->sse[0] = pkt->data.psnr.sse[0];

673 ctx->sse[1] = pkt->data.psnr.sse[1];

674 ctx->sse[2] = pkt->data.psnr.sse[2];

675 ctx->sse[3] = pkt->data.psnr.sse[3];

676 ctx->have_sse = 1;

677 break;

678 case VPX_CODEC_CUSTOM_PKT:

679 //ignore unsupported/unrecognized packet types

680 break;

681 }

682 }

683

684 return size;

685 }

686

687 static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,

688 const AVFrame *frame, int *got_packet)

689 {

690 VP8Context *ctx = avctx->priv_data;

691 struct vpx_image *rawimg = NULL;

692 struct vpx_image *rawimg_alpha = NULL;

693 int64_t timestamp = 0;

694 int res, coded_size;

695 vpx_enc_frame_flags_t flags = 0;

696

697 if (frame) {

698 rawimg = &ctx->rawimg;

699 rawimg->planes[VPX_PLANE_Y] = frame->data[0];

700 rawimg->planes[VPX_PLANE_U] = frame->data[1];

701 rawimg->planes[VPX_PLANE_V] = frame->data[2];

702 rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];

703 rawimg->stride[VPX_PLANE_U] = frame->linesize[1];

704 rawimg->stride[VPX_PLANE_V] = frame->linesize[2];

705 if (ctx->is_alpha) {

706 uint8_t *u_plane, *v_plane;

707 rawimg_alpha = &ctx->rawimg_alpha;

708 rawimg_alpha->planes[VPX_PLANE_Y] = frame->data[3];

709 u_plane = av_malloc(frame->linesize[1] * frame->height);

710 memset(u_plane, 0x80, frame->linesize[1] * frame->height);

711 rawimg_alpha->planes[VPX_PLANE_U] = u_plane;

712 v_plane = av_malloc(frame->linesize[2] * frame->height);

713 memset(v_plane, 0x80, frame->linesize[2] * frame->height);

714 rawimg_alpha->planes[VPX_PLANE_V] = v_plane;

715 rawimg_alpha->stride[VPX_PLANE_Y] = frame->linesize[0];

716 rawimg_alpha->stride[VPX_PLANE_U] = frame->linesize[1];

717 rawimg_alpha->stride[VPX_PLANE_V] = frame->linesize[2];

718 }

719 timestamp = frame->pts;

720 if (frame->pict_type == AV_PICTURE_TYPE_I)

721 flags |= VPX_EFLAG_FORCE_KF;

722 }

723

724 res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,

725 avctx->ticks_per_frame, flags, ctx->deadline);

726 if (res != VPX_CODEC_OK) {

727 log_encoder_error(avctx, "Error encoding frame");

728 return AVERROR_INVALIDDATA;

729 }

730

731 if (ctx->is_alpha) {

732 res = vpx_codec_encode(&ctx->encoder_alpha, rawimg_alpha, timestamp,

733 avctx->ticks_per_frame, flags, ctx->deadline);

734 if (res != VPX_CODEC_OK) {

735 log_encoder_error(avctx, "Error encoding alpha frame");

736 return AVERROR_INVALIDDATA;

737 }

738 }

739

740 coded_size = queue_frames(avctx, pkt, avctx->coded_frame);

741

742 if (!frame && avctx->flags & CODEC_FLAG_PASS1) {

743 unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);

744

745 avctx->stats_out = av_malloc(b64_size);

746 if (!avctx->stats_out) {

747 av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",

748 b64_size);

749 return AVERROR(ENOMEM);

750 }

751 av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,

752 ctx->twopass_stats.sz);

753 }

754

755 if (rawimg_alpha) {

756 av_free(rawimg_alpha->planes[VPX_PLANE_U]);

757 av_free(rawimg_alpha->planes[VPX_PLANE_V]);

758 }

759

760 *got_packet = !!coded_size;

761 return 0;

762 }

763

764 #define OFFSET(x) offsetof(VP8Context, x)

765 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

766

767 #ifndef VPX_ERROR_RESILIENT_DEFAULT

768 #define VPX_ERROR_RESILIENT_DEFAULT 1

769 #define VPX_ERROR_RESILIENT_PARTITIONS 2

770 #endif

771

772 #define COMMON_OPTIONS \

773 { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {.i64 = 1}, -16, 16, VE}, \

774 { "auto-alt-ref", "Enable use of alternate reference " \

775 "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE}, \

776 { "lag-in-frames", "Number of frames to look ahead for " \

777 "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, \

778 { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, \

779 { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, \

780 { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE, "arnr_type"}, \

781 { "backward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "arnr_type" }, \

782 { "forward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "arnr_type" }, \

783 { "centered", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "arnr_type" }, \

784 { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, \

785 { "best", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"}, \

786 { "good", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"}, \

787 { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_REALTIME}, 0, 0, VE, "quality"}, \

788 { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, VE, "er"}, \

789 { "max-intra-rate", "Maximum I-frame bitrate (pct) 0=unlimited", OFFSET(max_intra_rate), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, \

790 { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"}, \

791 { "partitions", "The frame partitions are independently decodable " \

792 "by the bool decoder, meaning that partitions can be decoded even " \

793 "though earlier partitions have been lost. Note that intra predicition" \

794 " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"}, \

795 { "crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 63, VE }, \

796

797 #define LEGACY_OPTIONS \

798 {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 1}, -16, 16, VE}, \

799 {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, \

800 {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.i64 = 0}, 0, UINT_MAX, VE, "flags"}, \

801 {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"}, \

802 {"altref", "enable use of alternate reference frames (VP8/2-pass only)", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_AUTO_ALT_REF}, INT_MIN, INT_MAX, VE, "flags"}, \

803 {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 15, VE}, \

804 {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.i64 = 3}, 0, 6, VE}, \

805 {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.i64 = 3}, 1, 3, VE}, \

806 {"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, lag_in_frames), AV_OPT_TYPE_INT, {.i64 = 25}, 0, 25, VE}, \

807

808 #if CONFIG_LIBVPX_VP8_ENCODER

809 static const AVOption vp8_options[] = {

810 COMMON_OPTIONS

811 LEGACY_OPTIONS

812 { NULL }

813 };

814 #endif

815

816 #if CONFIG_LIBVPX_VP9_ENCODER

817 static const AVOption vp9_options[] = {

818 COMMON_OPTIONS