FFmpeg: libavcodec/libvpxenc.c Source File

00001 /*
00002  * Copyright (c) 2010, Google, Inc.
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00026 #define VPX_DISABLE_CTRL_TYPECHECKS 1
00027 #define VPX_CODEC_DISABLE_COMPAT    1
00028 #include <vpx/vpx_encoder.h>
00029 #include <vpx/vp8cx.h>
00030 
00031 #include "avcodec.h"
00032 #include "internal.h"
00033 #include "libavutil/base64.h"
00034 #include "libavutil/mathematics.h"
00035 #include "libavutil/opt.h"
00036 
00041 struct FrameListData {
00042     void *buf;                       
00043     size_t sz;                       
00044     int64_t pts;                     
00046     unsigned long duration;          
00048     uint32_t flags;                  
00049     struct FrameListData *next;
00050 };
00051 
00052 typedef struct VP8EncoderContext {
00053     AVClass *class;
00054     struct vpx_codec_ctx encoder;
00055     struct vpx_image rawimg;
00056     struct vpx_fixed_buf twopass_stats;
00057     int deadline; //i.e., RT/GOOD/BEST
00058     struct FrameListData *coded_frame_list;
00059 
00060     int cpu_used;
00061     int auto_alt_ref;
00062 
00063     int arnr_max_frames;
00064     int arnr_strength;
00065     int arnr_type;
00066 
00067     int lag_in_frames;
00068     int error_resilient;
00069     int crf;
00070 } VP8Context;
00071 
00073 static const char *ctlidstr[] = {
00074     [VP8E_UPD_ENTROPY]           = "VP8E_UPD_ENTROPY",
00075     [VP8E_UPD_REFERENCE]         = "VP8E_UPD_REFERENCE",
00076     [VP8E_USE_REFERENCE]         = "VP8E_USE_REFERENCE",
00077     [VP8E_SET_ROI_MAP]           = "VP8E_SET_ROI_MAP",
00078     [VP8E_SET_ACTIVEMAP]         = "VP8E_SET_ACTIVEMAP",
00079     [VP8E_SET_SCALEMODE]         = "VP8E_SET_SCALEMODE",
00080     [VP8E_SET_CPUUSED]           = "VP8E_SET_CPUUSED",
00081     [VP8E_SET_ENABLEAUTOALTREF]  = "VP8E_SET_ENABLEAUTOALTREF",
00082     [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
00083     [VP8E_SET_SHARPNESS]         = "VP8E_SET_SHARPNESS",
00084     [VP8E_SET_STATIC_THRESHOLD]  = "VP8E_SET_STATIC_THRESHOLD",
00085     [VP8E_SET_TOKEN_PARTITIONS]  = "VP8E_SET_TOKEN_PARTITIONS",
00086     [VP8E_GET_LAST_QUANTIZER]    = "VP8E_GET_LAST_QUANTIZER",
00087     [VP8E_SET_ARNR_MAXFRAMES]    = "VP8E_SET_ARNR_MAXFRAMES",
00088     [VP8E_SET_ARNR_STRENGTH]     = "VP8E_SET_ARNR_STRENGTH",
00089     [VP8E_SET_ARNR_TYPE]         = "VP8E_SET_ARNR_TYPE",
00090     [VP8E_SET_CQ_LEVEL]          = "VP8E_SET_CQ_LEVEL",
00091 };
00092 
00093 static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
00094 {
00095     VP8Context *ctx = avctx->priv_data;
00096     const char *error  = vpx_codec_error(&ctx->encoder);
00097     const char *detail = vpx_codec_error_detail(&ctx->encoder);
00098 
00099     av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
00100     if (detail)
00101         av_log(avctx, AV_LOG_ERROR, "  Additional information: %s\n", detail);
00102 }
00103 
00104 static av_cold void dump_enc_cfg(AVCodecContext *avctx,
00105                                  const struct vpx_codec_enc_cfg *cfg)
00106 {
00107     int width = -30;
00108     int level = AV_LOG_DEBUG;
00109 
00110     av_log(avctx, level, "vpx_codec_enc_cfg\n");
00111     av_log(avctx, level, "generic settings\n"
00112            "  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n"
00113            "  %*s{%u/%u}\n  %*s%u\n  %*s%d\n  %*s%u\n",
00114            width, "g_usage:",           cfg->g_usage,
00115            width, "g_threads:",         cfg->g_threads,
00116            width, "g_profile:",         cfg->g_profile,
00117            width, "g_w:",               cfg->g_w,
00118            width, "g_h:",               cfg->g_h,
00119            width, "g_timebase:",        cfg->g_timebase.num, cfg->g_timebase.den,
00120            width, "g_error_resilient:", cfg->g_error_resilient,
00121            width, "g_pass:",            cfg->g_pass,
00122            width, "g_lag_in_frames:",   cfg->g_lag_in_frames);
00123     av_log(avctx, level, "rate control settings\n"
00124            "  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n"
00125            "  %*s%d\n  %*s%p(%zu)\n  %*s%u\n",
00126            width, "rc_dropframe_thresh:",   cfg->rc_dropframe_thresh,
00127            width, "rc_resize_allowed:",     cfg->rc_resize_allowed,
00128            width, "rc_resize_up_thresh:",   cfg->rc_resize_up_thresh,
00129            width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
00130            width, "rc_end_usage:",          cfg->rc_end_usage,
00131            width, "rc_twopass_stats_in:",   cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
00132            width, "rc_target_bitrate:",     cfg->rc_target_bitrate);
00133     av_log(avctx, level, "quantizer settings\n"
00134            "  %*s%u\n  %*s%u\n",
00135            width, "rc_min_quantizer:", cfg->rc_min_quantizer,
00136            width, "rc_max_quantizer:", cfg->rc_max_quantizer);
00137     av_log(avctx, level, "bitrate tolerance\n"
00138            "  %*s%u\n  %*s%u\n",
00139            width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
00140            width, "rc_overshoot_pct:",  cfg->rc_overshoot_pct);
00141     av_log(avctx, level, "decoder buffer model\n"
00142             "  %*s%u\n  %*s%u\n  %*s%u\n",
00143             width, "rc_buf_sz:",         cfg->rc_buf_sz,
00144             width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
00145             width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
00146     av_log(avctx, level, "2 pass rate control settings\n"
00147            "  %*s%u\n  %*s%u\n  %*s%u\n",
00148            width, "rc_2pass_vbr_bias_pct:",       cfg->rc_2pass_vbr_bias_pct,
00149            width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
00150            width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
00151     av_log(avctx, level, "keyframing settings\n"
00152            "  %*s%d\n  %*s%u\n  %*s%u\n",
00153            width, "kf_mode:",     cfg->kf_mode,
00154            width, "kf_min_dist:", cfg->kf_min_dist,
00155            width, "kf_max_dist:", cfg->kf_max_dist);
00156     av_log(avctx, level, "\n");
00157 }
00158 
00159 static void coded_frame_add(void *list, struct FrameListData *cx_frame)
00160 {
00161     struct FrameListData **p = list;
00162 
00163     while (*p != NULL)
00164         p = &(*p)->next;
00165     *p = cx_frame;
00166     cx_frame->next = NULL;
00167 }
00168 
00169 static av_cold void free_coded_frame(struct FrameListData *cx_frame)
00170 {
00171     av_freep(&cx_frame->buf);
00172     av_freep(&cx_frame);
00173 }
00174 
00175 static av_cold void free_frame_list(struct FrameListData *list)
00176 {
00177     struct FrameListData *p = list;
00178 
00179     while (p) {
00180         list = list->next;
00181         free_coded_frame(p);
00182         p = list;
00183     }
00184 }
00185 
00186 static av_cold int codecctl_int(AVCodecContext *avctx,
00187                                 enum vp8e_enc_control_id id, int val)
00188 {
00189     VP8Context *ctx = avctx->priv_data;
00190     char buf[80];
00191     int width = -30;
00192     int res;
00193 
00194     snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
00195     av_log(avctx, AV_LOG_DEBUG, "  %*s%d\n", width, buf, val);
00196 
00197     res = vpx_codec_control(&ctx->encoder, id, val);
00198     if (res != VPX_CODEC_OK) {
00199         snprintf(buf, sizeof(buf), "Failed to set %s codec control",
00200                  ctlidstr[id]);
00201         log_encoder_error(avctx, buf);
00202     }
00203 
00204     return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
00205 }
00206 
00207 static av_cold int vp8_free(AVCodecContext *avctx)
00208 {
00209     VP8Context *ctx = avctx->priv_data;
00210 
00211     vpx_codec_destroy(&ctx->encoder);
00212     av_freep(&ctx->twopass_stats.buf);
00213     av_freep(&avctx->coded_frame);
00214     av_freep(&avctx->stats_out);
00215     free_frame_list(ctx->coded_frame_list);
00216     return 0;
00217 }
00218 
00219 static av_cold int vp8_init(AVCodecContext *avctx)
00220 {
00221     VP8Context *ctx = avctx->priv_data;
00222     const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo;
00223     struct vpx_codec_enc_cfg enccfg;
00224     int res;
00225 
00226     av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
00227     av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
00228 
00229     if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
00230         av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
00231                vpx_codec_err_to_string(res));
00232         return AVERROR(EINVAL);
00233     }
00234     dump_enc_cfg(avctx, &enccfg);
00235 
00236     enccfg.g_w            = avctx->width;
00237     enccfg.g_h            = avctx->height;
00238     enccfg.g_timebase.num = avctx->time_base.num;
00239     enccfg.g_timebase.den = avctx->time_base.den;
00240     enccfg.g_threads      = avctx->thread_count;
00241 #if FF_API_X264_GLOBAL_OPTS
00242     if(avctx->rc_lookahead >= 0)
00243         enccfg.g_lag_in_frames= FFMIN(avctx->rc_lookahead, 25);  //0-25, avoids init failure
00244     if (ctx->lag_in_frames >= 0)
00245         enccfg.g_lag_in_frames = ctx->lag_in_frames;
00246 #else
00247     enccfg.g_lag_in_frames= ctx->lag_in_frames;
00248 #endif
00249 
00250     if (avctx->flags & CODEC_FLAG_PASS1)
00251         enccfg.g_pass = VPX_RC_FIRST_PASS;
00252     else if (avctx->flags & CODEC_FLAG_PASS2)
00253         enccfg.g_pass = VPX_RC_LAST_PASS;
00254     else
00255         enccfg.g_pass = VPX_RC_ONE_PASS;
00256 
00257     if (avctx->rc_min_rate == avctx->rc_max_rate &&
00258         avctx->rc_min_rate == avctx->bit_rate)
00259         enccfg.rc_end_usage = VPX_CBR;
00260 #if FF_API_X264_GLOBAL_OPTS
00261     else if (avctx->crf || ctx->crf > 0)
00262 #else
00263     else if (ctx->crf)
00264 #endif
00265         enccfg.rc_end_usage = VPX_CQ;
00266     enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
00267                                               AV_ROUND_NEAR_INF);
00268     if (avctx->qmin > 0)
00269         enccfg.rc_min_quantizer = avctx->qmin;
00270     if (avctx->qmax > 0)
00271         enccfg.rc_max_quantizer = avctx->qmax;
00272     enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
00273 
00274     //0-100 (0 => CBR, 100 => VBR)
00275     enccfg.rc_2pass_vbr_bias_pct           = round(avctx->qcompress * 100);
00276     enccfg.rc_2pass_vbr_minsection_pct     =
00277         avctx->rc_min_rate * 100LL / avctx->bit_rate;
00278     if (avctx->rc_max_rate)
00279         enccfg.rc_2pass_vbr_maxsection_pct =
00280             avctx->rc_max_rate * 100LL / avctx->bit_rate;
00281 
00282     if (avctx->rc_buffer_size)
00283         enccfg.rc_buf_sz         =
00284             avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
00285     if (avctx->rc_initial_buffer_occupancy)
00286         enccfg.rc_buf_initial_sz =
00287             avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
00288     enccfg.rc_buf_optimal_sz     = enccfg.rc_buf_sz * 5 / 6;
00289     enccfg.rc_undershoot_pct     = round(avctx->rc_buffer_aggressivity * 100);
00290 
00291     //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
00292     if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
00293         enccfg.kf_min_dist = avctx->keyint_min;
00294     if (avctx->gop_size >= 0)
00295         enccfg.kf_max_dist = avctx->gop_size;
00296 
00297     if (enccfg.g_pass == VPX_RC_FIRST_PASS)
00298         enccfg.g_lag_in_frames = 0;
00299     else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
00300         int decode_size;
00301 
00302         if (!avctx->stats_in) {
00303             av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
00304             return AVERROR_INVALIDDATA;
00305         }
00306 
00307         ctx->twopass_stats.sz  = strlen(avctx->stats_in) * 3 / 4;
00308         ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
00309         if (!ctx->twopass_stats.buf) {
00310             av_log(avctx, AV_LOG_ERROR,
00311                    "Stat buffer alloc (%zu bytes) failed\n",
00312                    ctx->twopass_stats.sz);
00313             return AVERROR(ENOMEM);
00314         }
00315         decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
00316                                        ctx->twopass_stats.sz);
00317         if (decode_size < 0) {
00318             av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
00319             return AVERROR_INVALIDDATA;
00320         }
00321 
00322         ctx->twopass_stats.sz      = decode_size;
00323         enccfg.rc_twopass_stats_in = ctx->twopass_stats;
00324     }
00325 
00326     /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
00327        complexity playback on low powered devices at the expense of encode
00328        quality. */
00329    if (avctx->profile != FF_PROFILE_UNKNOWN)
00330        enccfg.g_profile = avctx->profile;
00331 
00332     enccfg.g_error_resilient = ctx->error_resilient;
00333 
00334     dump_enc_cfg(avctx, &enccfg);
00335     /* Construct Encoder Context */
00336     res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0);
00337     if (res != VPX_CODEC_OK) {
00338         log_encoder_error(avctx, "Failed to initialize encoder");
00339         return AVERROR(EINVAL);
00340     }
00341 
00342     //codec control failures are currently treated only as warnings
00343     av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
00344     if (ctx->cpu_used != INT_MIN)
00345         codecctl_int(avctx, VP8E_SET_CPUUSED,          ctx->cpu_used);
00346     if (ctx->auto_alt_ref >= 0)
00347         codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
00348     if (ctx->arnr_max_frames >= 0)
00349         codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES,   ctx->arnr_max_frames);
00350     if (ctx->arnr_strength >= 0)
00351         codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH,    ctx->arnr_strength);
00352     if (ctx->arnr_type >= 0)
00353         codecctl_int(avctx, VP8E_SET_ARNR_TYPE,        ctx->arnr_type);
00354     codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
00355     codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS,  av_log2(avctx->slices));
00356     codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD,  avctx->mb_threshold);
00357 #if FF_API_X264_GLOBAL_OPTS
00358     codecctl_int(avctx, VP8E_SET_CQ_LEVEL,          (int)avctx->crf);
00359     if (ctx->crf >= 0)
00360         codecctl_int(avctx, VP8E_SET_CQ_LEVEL,      ctx->crf);
00361 #else
00362     codecctl_int(avctx, VP8E_SET_CQ_LEVEL,          ctx->crf);
00363 #endif
00364 
00365     av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
00366 
00367     //provide dummy value to initialize wrapper, values will be updated each _encode()
00368     vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
00369                  (unsigned char*)1);
00370 
00371     avctx->coded_frame = avcodec_alloc_frame();
00372     if (!avctx->coded_frame) {
00373         av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
00374         vp8_free(avctx);
00375         return AVERROR(ENOMEM);
00376     }
00377     return 0;
00378 }
00379 
00380 static inline void cx_pktcpy(struct FrameListData *dst,
00381                              const struct vpx_codec_cx_pkt *src)
00382 {
00383     dst->pts      = src->data.frame.pts;
00384     dst->duration = src->data.frame.duration;
00385     dst->flags    = src->data.frame.flags;
00386     dst->sz       = src->data.frame.sz;
00387     dst->buf      = src->data.frame.buf;
00388 }
00389 
00398 static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
00399                       uint8_t *buf, int buf_size, AVFrame *coded_frame)
00400 {
00401     if ((int) cx_frame->sz <= buf_size) {
00402         buf_size = cx_frame->sz;
00403         memcpy(buf, cx_frame->buf, buf_size);
00404         coded_frame->pts       = cx_frame->pts;
00405         coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
00406 
00407         if (coded_frame->key_frame)
00408             coded_frame->pict_type = AV_PICTURE_TYPE_I;
00409         else
00410             coded_frame->pict_type = AV_PICTURE_TYPE_P;
00411     } else {
00412         av_log(avctx, AV_LOG_ERROR,
00413                "Compressed frame larger than storage provided! (%zu/%d)\n",
00414                cx_frame->sz, buf_size);
00415         return AVERROR(EINVAL);
00416     }
00417     return buf_size;
00418 }
00419 
00428 static int queue_frames(AVCodecContext *avctx, uint8_t *buf, int buf_size,
00429                         AVFrame *coded_frame)
00430 {
00431     VP8Context *ctx = avctx->priv_data;
00432     const struct vpx_codec_cx_pkt *pkt;
00433     const void *iter = NULL;
00434     int size = 0;
00435 
00436     if (ctx->coded_frame_list) {
00437         struct FrameListData *cx_frame = ctx->coded_frame_list;
00438         /* return the leading frame if we've already begun queueing */
00439         size = storeframe(avctx, cx_frame, buf, buf_size, coded_frame);
00440         if (size < 0)
00441             return AVERROR(EINVAL);
00442         ctx->coded_frame_list = cx_frame->next;
00443         free_coded_frame(cx_frame);
00444     }
00445 
00446     /* consume all available output from the encoder before returning. buffers
00447        are only good through the next vpx_codec call */
00448     while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) {
00449         switch (pkt->kind) {
00450         case VPX_CODEC_CX_FRAME_PKT:
00451             if (!size) {
00452                 struct FrameListData cx_frame;
00453 
00454                 /* avoid storing the frame when the list is empty and we haven't yet
00455                    provided a frame for output */
00456                 assert(!ctx->coded_frame_list);
00457                 cx_pktcpy(&cx_frame, pkt);
00458                 size = storeframe(avctx, &cx_frame, buf, buf_size, coded_frame);
00459                 if (size < 0)
00460                     return AVERROR(EINVAL);
00461             } else {
00462                 struct FrameListData *cx_frame =
00463                     av_malloc(sizeof(struct FrameListData));
00464 
00465                 if (!cx_frame) {
00466                     av_log(avctx, AV_LOG_ERROR,
00467                            "Frame queue element alloc failed\n");
00468                     return AVERROR(ENOMEM);
00469                 }
00470                 cx_pktcpy(cx_frame, pkt);
00471                 cx_frame->buf = av_malloc(cx_frame->sz);
00472 
00473                 if (!cx_frame->buf) {
00474                     av_log(avctx, AV_LOG_ERROR,
00475                            "Data buffer alloc (%zu bytes) failed\n",
00476                            cx_frame->sz);
00477                     return AVERROR(ENOMEM);
00478                 }
00479                 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
00480                 coded_frame_add(&ctx->coded_frame_list, cx_frame);
00481             }
00482             break;
00483         case VPX_CODEC_STATS_PKT: {
00484             struct vpx_fixed_buf *stats = &ctx->twopass_stats;
00485             stats->buf = av_realloc_f(stats->buf, 1,
00486                                       stats->sz + pkt->data.twopass_stats.sz);
00487             if (!stats->buf) {
00488                 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
00489                 return AVERROR(ENOMEM);
00490             }
00491             memcpy((uint8_t*)stats->buf + stats->sz,
00492                    pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
00493             stats->sz += pkt->data.twopass_stats.sz;
00494             break;
00495         }
00496         case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR
00497         case VPX_CODEC_CUSTOM_PKT:
00498             //ignore unsupported/unrecognized packet types
00499             break;
00500         }
00501     }
00502 
00503     return size;
00504 }
00505 
00506 static int vp8_encode(AVCodecContext *avctx, uint8_t *buf, int buf_size,
00507                       void *data)
00508 {
00509     VP8Context *ctx = avctx->priv_data;
00510     AVFrame *frame = data;
00511     struct vpx_image *rawimg = NULL;
00512     int64_t timestamp = 0;
00513     int res, coded_size;
00514 
00515     if (frame) {
00516         rawimg                      = &ctx->rawimg;
00517         rawimg->planes[VPX_PLANE_Y] = frame->data[0];
00518         rawimg->planes[VPX_PLANE_U] = frame->data[1];
00519         rawimg->planes[VPX_PLANE_V] = frame->data[2];
00520         rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
00521         rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
00522         rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
00523         timestamp                   = frame->pts;
00524     }
00525 
00526     res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
00527                            avctx->ticks_per_frame, 0, ctx->deadline);
00528     if (res != VPX_CODEC_OK) {
00529         log_encoder_error(avctx, "Error encoding frame");
00530         return AVERROR_INVALIDDATA;
00531     }
00532     coded_size = queue_frames(avctx, buf, buf_size, avctx->coded_frame);
00533 
00534     if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
00535         unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
00536 
00537         avctx->stats_out = av_malloc(b64_size);
00538         if (!avctx->stats_out) {
00539             av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
00540                    b64_size);
00541             return AVERROR(ENOMEM);
00542         }
00543         av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
00544                          ctx->twopass_stats.sz);
00545     }
00546     return coded_size;
00547 }
00548 
00549 #define OFFSET(x) offsetof(VP8Context, x)
00550 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
00551 static const AVOption options[] = {
00552     { "cpu-used",        "Quality/Speed ratio modifier",           OFFSET(cpu_used),        AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE},
00553     { "auto-alt-ref",    "Enable use of alternate reference "
00554                          "frames (2-pass only)",                   OFFSET(auto_alt_ref),    AV_OPT_TYPE_INT, {-1},      -1,      1,       VE},
00555     { "lag-in-frames",   "Number of frames to look ahead for "
00556                          "alternate reference frame selection",    OFFSET(lag_in_frames),   AV_OPT_TYPE_INT, {-1},      -1,      INT_MAX, VE},
00557     { "arnr-maxframes",  "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {-1},      -1,      INT_MAX, VE},
00558     { "arnr-strength",   "altref noise reduction filter strength", OFFSET(arnr_strength),   AV_OPT_TYPE_INT, {-1},      -1,      INT_MAX, VE},
00559     { "arnr-type",       "altref noise reduction filter type",     OFFSET(arnr_type),       AV_OPT_TYPE_INT, {-1},      -1,      INT_MAX, VE, "arnr_type"},
00560     { "backward",        NULL, 0, AV_OPT_TYPE_CONST, {1}, 0, 0, VE, "arnr_type" },
00561     { "forward",         NULL, 0, AV_OPT_TYPE_CONST, {2}, 0, 0, VE, "arnr_type" },
00562     { "centered",        NULL, 0, AV_OPT_TYPE_CONST, {3}, 0, 0, VE, "arnr_type" },
00563     { "deadline",        "Time to spend encoding, in microseconds.", OFFSET(deadline),      AV_OPT_TYPE_INT, {VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
00564     { "best",            NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
00565     { "good",            NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
00566     { "realtime",        NULL, 0, AV_OPT_TYPE_CONST, {VPX_DL_REALTIME},     0, 0, VE, "quality"},
00567     { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, VE, "er"},
00568 #ifdef VPX_ERROR_RESILIENT_DEFAULT
00569     { "default",         "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
00570     { "partitions",      "The frame partitions are independently decodable "
00571                          "by the bool decoder, meaning that partitions can be decoded even "
00572                          "though earlier partitions have been lost. Note that intra predicition"
00573                          " is still done over the partition boundary.",       0, AV_OPT_TYPE_CONST, {VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
00574 #endif
00575 {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.dbl = 3}, -16, 16, VE},
00576 {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.dbl = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
00577 {"best", NULL, 0, AV_OPT_TYPE_CONST, {.dbl = VPX_DL_BEST_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
00578 {"good", NULL, 0, AV_OPT_TYPE_CONST, {.dbl = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
00579 {"realtime", NULL, 0, AV_OPT_TYPE_CONST, {.dbl = VPX_DL_REALTIME}, INT_MIN, INT_MAX, VE, "quality"},
00580 {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 15, VE},
00581 {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.dbl = 3}, 0, 6, VE},
00582 {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.dbl = 3}, 1, 3, VE},
00583 #if FF_API_X264_GLOBAL_OPTS
00584 {"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, lag_in_frames), AV_OPT_TYPE_INT, {.dbl = -1}, -1, 25, VE},
00585 {"crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.dbl = -1}, -1, 63, VE},
00586 #else
00587 {"rc_lookahead", "Number of frames to look ahead for alternate reference frame selection", offsetof(VP8Context, lag_in_frames), AV_OPT_TYPE_INT, {.dbl = 25}, 0, 25, VE},
00588 {"crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 63, VE},
00589 #endif
00590 {NULL}
00591 };
00592 
00593 static const AVClass class = {
00594     .class_name = "libvpx encoder",
00595     .item_name  = av_default_item_name,
00596     .option     = options,
00597     .version    = LIBAVUTIL_VERSION_INT,
00598 };
00599 
00600 static const AVCodecDefault defaults[] = {
00601     { "qmin",             "-1" },
00602     { "qmax",             "-1" },
00603     { "g",                "-1" },
00604     { "keyint_min",       "-1" },
00605     { NULL },
00606 };
00607 
00608 AVCodec ff_libvpx_encoder = {
00609     .name           = "libvpx",
00610     .type           = AVMEDIA_TYPE_VIDEO,
00611     .id             = CODEC_ID_VP8,
00612     .priv_data_size = sizeof(VP8Context),
00613     .init           = vp8_init,
00614     .encode         = vp8_encode,
00615     .close          = vp8_free,
00616     .capabilities   = CODEC_CAP_DELAY,
00617     .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
00618     .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
00619     .priv_class = &class,
00620     .defaults       = defaults,
00621 };