libavcodec/libvpxenc.c

   1 /*
   2  * Copyright (c) 2010, Google, Inc.
   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 /**
  22  * @file
  23  * VP8 encoder support via libvpx
  24  */
  25
  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>
  30
  31 #include "avcodec.h"
  32 #include "internal.h"
  33 #include "libavutil/base64.h"
  34 #include "libavutil/mathematics.h"
  35 #include "libavutil/opt.h"
  36
  37 /**
  38  * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h.
  39  * One encoded frame returned from the library.
  40  */
  41 struct FrameListData {
  42     void *buf;                       /**< compressed data buffer */
  43     size_t sz;                       /**< length of compressed data */
  44     int64_t pts;                     /**< time stamp to show frame
  45                                           (in timebase units) */
  46     unsigned long duration;          /**< duration to show frame
  47                                           (in timebase units) */
  48     uint32_t flags;                  /**< flags for this frame */
  49     struct FrameListData *next;
  50 };
  51
  52 typedef struct VP8EncoderContext {
  53     AVClass *class;
  54     struct vpx_codec_ctx encoder;
  55     struct vpx_image rawimg;
  56     struct vpx_fixed_buf twopass_stats;
  57     unsigned long deadline; //i.e., RT/GOOD/BEST
  58     struct FrameListData *coded_frame_list;
  59     int cpu_used;
  60     int auto_alt_ref;
  61     int arnr_max_frames;
  62     int arnr_strength;
  63     int arnr_type;
  64     int lag_in_frames;
  65     int error_resilient;
  66 } VP8Context;
  67
  68 /** String mappings for enum vp8e_enc_control_id */
  69 static const char *const ctlidstr[] = {
  70     [VP8E_UPD_ENTROPY]           = "VP8E_UPD_ENTROPY",
  71     [VP8E_UPD_REFERENCE]         = "VP8E_UPD_REFERENCE",
  72     [VP8E_USE_REFERENCE]         = "VP8E_USE_REFERENCE",
  73     [VP8E_SET_ROI_MAP]           = "VP8E_SET_ROI_MAP",
  74     [VP8E_SET_ACTIVEMAP]         = "VP8E_SET_ACTIVEMAP",
  75     [VP8E_SET_SCALEMODE]         = "VP8E_SET_SCALEMODE",
  76     [VP8E_SET_CPUUSED]           = "VP8E_SET_CPUUSED",
  77     [VP8E_SET_ENABLEAUTOALTREF]  = "VP8E_SET_ENABLEAUTOALTREF",
  78     [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
  79     [VP8E_SET_SHARPNESS]         = "VP8E_SET_SHARPNESS",
  80     [VP8E_SET_STATIC_THRESHOLD]  = "VP8E_SET_STATIC_THRESHOLD",
  81     [VP8E_SET_TOKEN_PARTITIONS]  = "VP8E_SET_TOKEN_PARTITIONS",
  82     [VP8E_GET_LAST_QUANTIZER]    = "VP8E_GET_LAST_QUANTIZER",
  83     [VP8E_SET_ARNR_MAXFRAMES]    = "VP8E_SET_ARNR_MAXFRAMES",
  84     [VP8E_SET_ARNR_STRENGTH]     = "VP8E_SET_ARNR_STRENGTH",
  85     [VP8E_SET_ARNR_TYPE]         = "VP8E_SET_ARNR_TYPE",
  86 };
  87
  88 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
  89 {
  90     VP8Context *ctx = avctx->priv_data;
  91     const char *error  = vpx_codec_error(&ctx->encoder);
  92     const char *detail = vpx_codec_error_detail(&ctx->encoder);
  93
  94     av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
  95     if (detail)
  96         av_log(avctx, AV_LOG_ERROR, "  Additional information: %s\n", detail);
  97 }
  98
  99 static av_cold void dump_enc_cfg(AVCodecContext *avctx,
 100                                  const struct vpx_codec_enc_cfg *cfg)
 101 {
 102     int width = -30;
 103     int level = AV_LOG_DEBUG;
 104
 105     av_log(avctx, level, "vpx_codec_enc_cfg\n");
 106     av_log(avctx, level, "generic settings\n"
 107            "  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n"
 108            "  %*s{%u/%u}\n  %*s%u\n  %*s%d\n  %*s%u\n",
 109            width, "g_usage:",           cfg->g_usage,
 110            width, "g_threads:",         cfg->g_threads,
 111            width, "g_profile:",         cfg->g_profile,
 112            width, "g_w:",               cfg->g_w,
 113            width, "g_h:",               cfg->g_h,
 114            width, "g_timebase:",        cfg->g_timebase.num, cfg->g_timebase.den,
 115            width, "g_error_resilient:", cfg->g_error_resilient,
 116            width, "g_pass:",            cfg->g_pass,
 117            width, "g_lag_in_frames:",   cfg->g_lag_in_frames);
 118     av_log(avctx, level, "rate control settings\n"
 119            "  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n"
 120            "  %*s%d\n  %*s%p(%zu)\n  %*s%u\n",
 121            width, "rc_dropframe_thresh:",   cfg->rc_dropframe_thresh,
 122            width, "rc_resize_allowed:",     cfg->rc_resize_allowed,
 123            width, "rc_resize_up_thresh:",   cfg->rc_resize_up_thresh,
 124            width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
 125            width, "rc_end_usage:",          cfg->rc_end_usage,
 126            width, "rc_twopass_stats_in:",   cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
 127            width, "rc_target_bitrate:",     cfg->rc_target_bitrate);
 128     av_log(avctx, level, "quantizer settings\n"
 129            "  %*s%u\n  %*s%u\n",
 130            width, "rc_min_quantizer:", cfg->rc_min_quantizer,
 131            width, "rc_max_quantizer:", cfg->rc_max_quantizer);
 132     av_log(avctx, level, "bitrate tolerance\n"
 133            "  %*s%u\n  %*s%u\n",
 134            width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
 135            width, "rc_overshoot_pct:",  cfg->rc_overshoot_pct);
 136     av_log(avctx, level, "decoder buffer model\n"
 137             "  %*s%u\n  %*s%u\n  %*s%u\n",
 138             width, "rc_buf_sz:",         cfg->rc_buf_sz,
 139             width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
 140             width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
 141     av_log(avctx, level, "2 pass rate control settings\n"
 142            "  %*s%u\n  %*s%u\n  %*s%u\n",
 143            width, "rc_2pass_vbr_bias_pct:",       cfg->rc_2pass_vbr_bias_pct,
 144            width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
 145            width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
 146     av_log(avctx, level, "keyframing settings\n"
 147            "  %*s%d\n  %*s%u\n  %*s%u\n",
 148            width, "kf_mode:",     cfg->kf_mode,
 149            width, "kf_min_dist:", cfg->kf_min_dist,
 150            width, "kf_max_dist:", cfg->kf_max_dist);
 151     av_log(avctx, level, "\n");
 152 }
 153
 154 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
 155 {
 156     struct FrameListData **p = list;
 157
 158     while (*p != NULL)
 159         p = &(*p)->next;
 160     *p = cx_frame;
 161     cx_frame->next = NULL;
 162 }
 163
 164 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
 165 {
 166     av_freep(&cx_frame->buf);
 167     av_freep(&cx_frame);
 168 }
 169
 170 static av_cold void free_frame_list(struct FrameListData *list)
 171 {
 172     struct FrameListData *p = list;
 173
 174     while (p) {
 175         list = list->next;
 176         free_coded_frame(p);
 177         p = list;
 178     }
 179 }
 180
 181 static av_cold int codecctl_int(AVCodecContext *avctx,
 182                                 enum vp8e_enc_control_id id, int val)
 183 {
 184     VP8Context *ctx = avctx->priv_data;
 185     char buf[80];
 186     int width = -30;
 187     int res;
 188
 189     snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
 190     av_log(avctx, AV_LOG_DEBUG, "  %*s%d\n", width, buf, val);
 191
 192     res = vpx_codec_control(&ctx->encoder, id, val);
 193     if (res != VPX_CODEC_OK) {
 194         snprintf(buf, sizeof(buf), "Failed to set %s codec control",
 195                  ctlidstr[id]);
 196         log_encoder_error(avctx, buf);
 197     }
 198
 199     return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
 200 }
 201
 202 static av_cold int vp8_free(AVCodecContext *avctx)
 203 {
 204     VP8Context *ctx = avctx->priv_data;
 205
 206     vpx_codec_destroy(&ctx->encoder);
 207     av_freep(&ctx->twopass_stats.buf);
 208     av_freep(&avctx->coded_frame);
 209     av_freep(&avctx->stats_out);
 210     free_frame_list(ctx->coded_frame_list);
 211     return 0;
 212 }
 213
 214 static av_cold int vp8_init(AVCodecContext *avctx)
 215 {
 216     VP8Context *ctx = avctx->priv_data;
 217     const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo;
 218     struct vpx_codec_enc_cfg enccfg;
 219     int res;
 220
 221     av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
 222     av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
 223
 224     if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
 225         av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
 226                vpx_codec_err_to_string(res));
 227         return AVERROR(EINVAL);
 228     }
 229     dump_enc_cfg(avctx, &enccfg);
 230
 231     enccfg.g_w            = avctx->width;
 232     enccfg.g_h            = avctx->height;
 233     enccfg.g_timebase.num = avctx->time_base.num;
 234     enccfg.g_timebase.den = avctx->time_base.den;
 235     enccfg.g_threads      = avctx->thread_count;
 236
 237     if (ctx->lag_in_frames >= 0)
 238         enccfg.g_lag_in_frames = ctx->lag_in_frames;
 239
 240     if (avctx->flags & CODEC_FLAG_PASS1)
 241         enccfg.g_pass = VPX_RC_FIRST_PASS;
 242     else if (avctx->flags & CODEC_FLAG_PASS2)
 243         enccfg.g_pass = VPX_RC_LAST_PASS;
 244     else
 245         enccfg.g_pass = VPX_RC_ONE_PASS;
 246
 247     if (avctx->rc_min_rate == avctx->rc_max_rate &&
 248         avctx->rc_min_rate == avctx->bit_rate)
 249         enccfg.rc_end_usage = VPX_CBR;
 250     enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
 251                                               AV_ROUND_NEAR_INF);
 252     if (avctx->qmin > 0)
 253         enccfg.rc_min_quantizer = avctx->qmin;
 254     if (avctx->qmax > 0)
 255         enccfg.rc_max_quantizer = avctx->qmax;
 256     enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
 257
 258     //0-100 (0 => CBR, 100 => VBR)
 259     enccfg.rc_2pass_vbr_bias_pct           = round(avctx->qcompress * 100);
 260     enccfg.rc_2pass_vbr_minsection_pct     =
 261         avctx->rc_min_rate * 100LL / avctx->bit_rate;
 262     if (avctx->rc_max_rate)
 263         enccfg.rc_2pass_vbr_maxsection_pct =
 264             avctx->rc_max_rate * 100LL / avctx->bit_rate;
 265
 266     if (avctx->rc_buffer_size)
 267         enccfg.rc_buf_sz         =
 268             avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
 269     if (avctx->rc_initial_buffer_occupancy)
 270         enccfg.rc_buf_initial_sz =
 271             avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
 272     enccfg.rc_buf_optimal_sz     = enccfg.rc_buf_sz * 5 / 6;
 273
 274     //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
 275     if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
 276         enccfg.kf_min_dist = avctx->keyint_min;
 277     if (avctx->gop_size >= 0)
 278         enccfg.kf_max_dist = avctx->gop_size;
 279
 280     if (enccfg.g_pass == VPX_RC_FIRST_PASS)
 281         enccfg.g_lag_in_frames = 0;
 282     else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
 283         int decode_size;
 284
 285         if (!avctx->stats_in) {
 286             av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
 287             return AVERROR_INVALIDDATA;
 288         }
 289
 290         ctx->twopass_stats.sz  = strlen(avctx->stats_in) * 3 / 4;
 291         ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
 292         if (!ctx->twopass_stats.buf) {
 293             av_log(avctx, AV_LOG_ERROR,
 294                    "Stat buffer alloc (%zu bytes) failed\n",
 295                    ctx->twopass_stats.sz);
 296             return AVERROR(ENOMEM);
 297         }
 298         decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
 299                                        ctx->twopass_stats.sz);
 300         if (decode_size < 0) {
 301             av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
 302             return AVERROR_INVALIDDATA;
 303         }
 304
 305         ctx->twopass_stats.sz      = decode_size;
 306         enccfg.rc_twopass_stats_in = ctx->twopass_stats;
 307     }
 308
 309     /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
 310        complexity playback on low powered devices at the expense of encode
 311        quality. */
 312    if (avctx->profile != FF_PROFILE_UNKNOWN)
 313        enccfg.g_profile = avctx->profile;
 314
 315     enccfg.g_error_resilient = ctx->error_resilient;
 316
 317     dump_enc_cfg(avctx, &enccfg);
 318     /* Construct Encoder Context */
 319     res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0);
 320     if (res != VPX_CODEC_OK) {
 321         log_encoder_error(avctx, "Failed to initialize encoder");
 322         return AVERROR(EINVAL);
 323     }
 324
 325     //codec control failures are currently treated only as warnings
 326     av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
 327     if (ctx->cpu_used != INT_MIN)
 328         codecctl_int(avctx, VP8E_SET_CPUUSED,          ctx->cpu_used);
 329     if (ctx->auto_alt_ref >= 0)
 330         codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
 331     if (ctx->arnr_max_frames >= 0)
 332         codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES,   ctx->arnr_max_frames);
 333     if (ctx->arnr_strength >= 0)
 334         codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH,    ctx->arnr_strength);
 335     if (ctx->arnr_type >= 0)
 336         codecctl_int(avctx, VP8E_SET_ARNR_TYPE,        ctx->arnr_type);
 337     codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
 338     codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS,  av_log2(avctx->slices));
 339     codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD,  avctx->mb_threshold);
 340
 341     //provide dummy value to initialize wrapper, values will be updated each _encode()
 342     vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
 343                  (unsigned char*)1);
 344
 345     avctx->coded_frame = avcodec_alloc_frame();
 346     if (!avctx->coded_frame) {
 347         av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
 348         vp8_free(avctx);
 349         return AVERROR(ENOMEM);
 350     }
 351     return 0;
 352 }
 353
 354 static inline void cx_pktcpy(struct FrameListData *dst,
 355                              const struct vpx_codec_cx_pkt *src)
 356 {
 357     dst->pts      = src->data.frame.pts;
 358     dst->duration = src->data.frame.duration;
 359     dst->flags    = src->data.frame.flags;
 360     dst->sz       = src->data.frame.sz;
 361     dst->buf      = src->data.frame.buf;
 362 }
 363
 364 /**
 365  * Store coded frame information in format suitable for return from encode2().
 366  *
 367  * Write information from @a cx_frame to @a pkt
 368  * @return packet data size on success
 369  * @return a negative AVERROR on error
 370  */
 371 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
 372                       AVPacket *pkt, AVFrame *coded_frame)
 373 {
 374     int ret = ff_alloc_packet(pkt, cx_frame->sz);
 375     if (ret >= 0) {
 376         memcpy(pkt->data, cx_frame->buf, pkt->size);
 377         pkt->pts = pkt->dts    = cx_frame->pts;
 378         coded_frame->pts       = cx_frame->pts;
 379         coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
 380
 381         if (coded_frame->key_frame) {
 382             coded_frame->pict_type = AV_PICTURE_TYPE_I;
 383             pkt->flags            |= AV_PKT_FLAG_KEY;
 384         } else
 385             coded_frame->pict_type = AV_PICTURE_TYPE_P;
 386     } else {
 387         av_log(avctx, AV_LOG_ERROR,
 388                "Error getting output packet of size %zu.\n", cx_frame->sz);
 389         return ret;
 390     }
 391     return pkt->size;
 392 }
 393
 394 /**
 395  * Queue multiple output frames from the encoder, returning the front-most.
 396  * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
 397  * the frame queue. Return the head frame if available.
 398  * @return Stored frame size
 399  * @return AVERROR(EINVAL) on output size error
 400  * @return AVERROR(ENOMEM) on coded frame queue data allocation error
 401  */
 402 static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,
 403                         AVFrame *coded_frame)
 404 {
 405     VP8Context *ctx = avctx->priv_data;
 406     const struct vpx_codec_cx_pkt *pkt;
 407     const void *iter = NULL;
 408     int size = 0;
 409
 410     if (ctx->coded_frame_list) {
 411         struct FrameListData *cx_frame = ctx->coded_frame_list;
 412         /* return the leading frame if we've already begun queueing */
 413         size = storeframe(avctx, cx_frame, pkt_out, coded_frame);
 414         if (size < 0)
 415             return size;
 416         ctx->coded_frame_list = cx_frame->next;
 417         free_coded_frame(cx_frame);
 418     }
 419
 420     /* consume all available output from the encoder before returning. buffers
 421        are only good through the next vpx_codec call */
 422     while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) {
 423         switch (pkt->kind) {
 424         case VPX_CODEC_CX_FRAME_PKT:
 425             if (!size) {
 426                 struct FrameListData cx_frame;
 427
 428                 /* avoid storing the frame when the list is empty and we haven't yet
 429                    provided a frame for output */
 430                 assert(!ctx->coded_frame_list);
 431                 cx_pktcpy(&cx_frame, pkt);
 432                 size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);
 433                 if (size < 0)
 434                     return size;
 435             } else {
 436                 struct FrameListData *cx_frame =
 437                     av_malloc(sizeof(struct FrameListData));
 438
 439                 if (!cx_frame) {
 440                     av_log(avctx, AV_LOG_ERROR,
 441                            "Frame queue element alloc failed\n");
 442                     return AVERROR(ENOMEM);
 443                 }
 444                 cx_pktcpy(cx_frame, pkt);
 445                 cx_frame->buf = av_malloc(cx_frame->sz);
 446
 447                 if (!cx_frame->buf) {
 448                     av_log(avctx, AV_LOG_ERROR,
 449                            "Data buffer alloc (%zu bytes) failed\n",
 450                            cx_frame->sz);
 451                     return AVERROR(ENOMEM);
 452                 }
 453                 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
 454                 coded_frame_add(&ctx->coded_frame_list, cx_frame);
 455             }
 456             break;
 457         case VPX_CODEC_STATS_PKT: {
 458             struct vpx_fixed_buf *stats = &ctx->twopass_stats;
 459             stats->buf = av_realloc(stats->buf,
 460                                     stats->sz + pkt->data.twopass_stats.sz);
 461             if (!stats->buf) {
 462                 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
 463                 return AVERROR(ENOMEM);
 464             }
 465             memcpy((uint8_t*)stats->buf + stats->sz,
 466                    pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
 467             stats->sz += pkt->data.twopass_stats.sz;
 468             break;
 469         }
 470         case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR
 471         case VPX_CODEC_CUSTOM_PKT:
 472             //ignore unsupported/unrecognized packet types
 473             break;
 474         }
 475     }
 476
 477     return size;
 478 }
 479
 480 static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
 481                       const AVFrame *frame, int *got_packet)
 482 {
 483     VP8Context *ctx = avctx->priv_data;
 484     struct vpx_image *rawimg = NULL;
 485     int64_t timestamp = 0;
 486     int res, coded_size;
 487
 488     if (frame) {
 489         rawimg                      = &ctx->rawimg;
 490         rawimg->planes[VPX_PLANE_Y] = frame->data[0];
 491         rawimg->planes[VPX_PLANE_U] = frame->data[1];
 492         rawimg->planes[VPX_PLANE_V] = frame->data[2];
 493         rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
 494         rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
 495         rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
 496         timestamp                   = frame->pts;
 497     }
 498
 499     res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
 500                            avctx->ticks_per_frame, 0, ctx->deadline);
 501     if (res != VPX_CODEC_OK) {
 502         log_encoder_error(avctx, "Error encoding frame");
 503         return AVERROR_INVALIDDATA;
 504     }
 505     coded_size = queue_frames(avctx, pkt, avctx->coded_frame);
 506
 507     if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
 508         unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
 509
 510         avctx->stats_out = av_malloc(b64_size);
 511         if (!avctx->stats_out) {
 512             av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
 513                    b64_size);
 514             return AVERROR(ENOMEM);
 515         }
 516         av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
 517                          ctx->twopass_stats.sz);
 518     }
 519
 520     *got_packet = !!coded_size;
 521     return 0;
 522 }
 523
 524 #define OFFSET(x) offsetof(VP8Context, x)
 525 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 526 static const AVOption options[] = {
 527     { "cpu-used",        "Quality/Speed ratio modifier",           OFFSET(cpu_used),        AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE},
 528     { "auto-alt-ref",    "Enable use of alternate reference "
 529                          "frames (2-pass only)",                   OFFSET(auto_alt_ref),    AV_OPT_TYPE_INT, {-1},      -1,      1,       VE},
 530     { "lag-in-frames",   "Number of frames to look ahead for "
 531                          "alternate reference frame selection",    OFFSET(lag_in_frames),   AV_OPT_TYPE_INT, {-1},      -1,      INT_MAX, VE},
 532     { "arnr-maxframes",  "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {-1},      -1,      INT_MAX, VE},
 533     { "arnr-strength",   "altref noise reduction filter strength", OFFSET(arnr_strength),   AV_OPT_TYPE_INT, {-1},      -1,      INT_MAX, VE},
 534     { "arnr-type",       "altref noise reduction filter type",     OFFSET(arnr_type),       AV_OPT_TYPE_INT, {-1},      -1,      INT_MAX, VE, "arnr_type"},
 535     { "backward",        NULL, 0, AV_OPT_TYPE_CONST, {1}, 0, 0, VE, "arnr_type" },
 536     { "forward",         NULL, 0, AV_OPT_TYPE_CONST, {2}, 0, 0, VE, "arnr_type" },
 537     { "centered",        NULL, 0, AV_OPT_TYPE_CONST, {3}, 0, 0, VE, "arnr_type" },
 538     { "deadline",        "Time to spend encoding, in microseconds.", OFFSET(deadline),      AV_OPT_TYPE_INT, {VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
 539     { "best",            NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
 540     { "good",            NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
 541     { "realtime",        NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_REALTIME},     0, 0, VE, "quality"},
 542     { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, VE, "er"},
 543 #ifdef VPX_ERROR_RESILIENT_DEFAULT
 544     { "default",         "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
 545     { "partitions",      "The frame partitions are independently decodable "
 546                          "by the bool decoder, meaning that partitions can be decoded even "
 547                          "though earlier partitions have been lost. Note that intra predicition"
 548                          " is still done over the partition boundary.",       0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
 549 #endif
 550     { NULL }
 551 };
 552
 553 static const AVClass class = {
 554     .class_name = "libvpx encoder",
 555     .item_name  = av_default_item_name,
 556     .option     = options,
 557     .version    = LIBAVUTIL_VERSION_INT,
 558 };
 559
 560 static const AVCodecDefault defaults[] = {
 561     { "qmin",             "-1" },
 562     { "qmax",             "-1" },
 563     { "g",                "-1" },
 564     { "keyint_min",       "-1" },
 565     { NULL },
 566 };
 567
 568 AVCodec ff_libvpx_encoder = {
 569     .name           = "libvpx",
 570     .type           = AVMEDIA_TYPE_VIDEO,
 571     .id             = CODEC_ID_VP8,
 572     .priv_data_size = sizeof(VP8Context),
 573     .init           = vp8_init,
 574     .encode2        = vp8_encode,
 575     .close          = vp8_free,
 576     .capabilities   = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
 577     .pix_fmts       = (const enum PixelFormat[]){ PIX_FMT_YUV420P, PIX_FMT_NONE },
 578     .long_name      = NULL_IF_CONFIG_SMALL("libvpx VP8"),
 579     .priv_class     = &class,
 580     .defaults       = defaults,
 581 };