/* * Copyright (c) 2010, Google, Inc. * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * VP8 encoder support via libvpx */ #define VPX_DISABLE_CTRL_TYPECHECKS 1 #define VPX_CODEC_DISABLE_COMPAT 1 #include #include #include "avcodec.h" #include "internal.h" #include "libavutil/avassert.h" #include "libavutil/base64.h" #include "libavutil/common.h" #include "libavutil/mathematics.h" #include "libavutil/opt.h" /** * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h. * One encoded frame returned from the library. */ struct FrameListData { void *buf; /**< compressed data buffer */ size_t sz; /**< length of compressed data */ int64_t pts; /**< time stamp to show frame (in timebase units) */ unsigned long duration; /**< duration to show frame (in timebase units) */ uint32_t flags; /**< flags for this frame */ struct FrameListData *next; }; typedef struct VP8EncoderContext { AVClass *class; struct vpx_codec_ctx encoder; struct vpx_image rawimg; struct vpx_fixed_buf twopass_stats; int deadline; //i.e., RT/GOOD/BEST struct FrameListData *coded_frame_list; int cpu_used; /** * VP8 specific flags, see VP8F_* below. */ int flags; #define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links #define VP8F_AUTO_ALT_REF 0x00000002 ///< Enable automatic alternate reference frame generation int auto_alt_ref; int arnr_max_frames; int arnr_strength; int arnr_type; int lag_in_frames; int error_resilient; int crf; int max_intra_rate; } VP8Context; /** String mappings for enum vp8e_enc_control_id */ static const char *const ctlidstr[] = { [VP8E_UPD_ENTROPY] = "VP8E_UPD_ENTROPY", [VP8E_UPD_REFERENCE] = "VP8E_UPD_REFERENCE", [VP8E_USE_REFERENCE] = "VP8E_USE_REFERENCE", [VP8E_SET_ROI_MAP] = "VP8E_SET_ROI_MAP", [VP8E_SET_ACTIVEMAP] = "VP8E_SET_ACTIVEMAP", [VP8E_SET_SCALEMODE] = "VP8E_SET_SCALEMODE", [VP8E_SET_CPUUSED] = "VP8E_SET_CPUUSED", [VP8E_SET_ENABLEAUTOALTREF] = "VP8E_SET_ENABLEAUTOALTREF", [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY", [VP8E_SET_SHARPNESS] = "VP8E_SET_SHARPNESS", [VP8E_SET_STATIC_THRESHOLD] = "VP8E_SET_STATIC_THRESHOLD", [VP8E_SET_TOKEN_PARTITIONS] = "VP8E_SET_TOKEN_PARTITIONS", [VP8E_GET_LAST_QUANTIZER] = "VP8E_GET_LAST_QUANTIZER", [VP8E_SET_ARNR_MAXFRAMES] = "VP8E_SET_ARNR_MAXFRAMES", [VP8E_SET_ARNR_STRENGTH] = "VP8E_SET_ARNR_STRENGTH", [VP8E_SET_ARNR_TYPE] = "VP8E_SET_ARNR_TYPE", [VP8E_SET_CQ_LEVEL] = "VP8E_SET_CQ_LEVEL", [VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT", }; static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc) { VP8Context *ctx = avctx->priv_data; const char *error = vpx_codec_error(&ctx->encoder); const char *detail = vpx_codec_error_detail(&ctx->encoder); av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error); if (detail) av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n", detail); } static av_cold void dump_enc_cfg(AVCodecContext *avctx, const struct vpx_codec_enc_cfg *cfg) { int width = -30; int level = AV_LOG_DEBUG; av_log(avctx, level, "vpx_codec_enc_cfg\n"); av_log(avctx, level, "generic settings\n" " %*s%u\n %*s%u\n %*s%u\n %*s%u\n %*s%u\n" " %*s{%u/%u}\n %*s%u\n %*s%d\n %*s%u\n", width, "g_usage:", cfg->g_usage, width, "g_threads:", cfg->g_threads, width, "g_profile:", cfg->g_profile, width, "g_w:", cfg->g_w, width, "g_h:", cfg->g_h, width, "g_timebase:", cfg->g_timebase.num, cfg->g_timebase.den, width, "g_error_resilient:", cfg->g_error_resilient, width, "g_pass:", cfg->g_pass, width, "g_lag_in_frames:", cfg->g_lag_in_frames); av_log(avctx, level, "rate control settings\n" " %*s%u\n %*s%u\n %*s%u\n %*s%u\n" " %*s%d\n %*s%p(%zu)\n %*s%u\n", width, "rc_dropframe_thresh:", cfg->rc_dropframe_thresh, width, "rc_resize_allowed:", cfg->rc_resize_allowed, width, "rc_resize_up_thresh:", cfg->rc_resize_up_thresh, width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh, width, "rc_end_usage:", cfg->rc_end_usage, width, "rc_twopass_stats_in:", cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz, width, "rc_target_bitrate:", cfg->rc_target_bitrate); av_log(avctx, level, "quantizer settings\n" " %*s%u\n %*s%u\n", width, "rc_min_quantizer:", cfg->rc_min_quantizer, width, "rc_max_quantizer:", cfg->rc_max_quantizer); av_log(avctx, level, "bitrate tolerance\n" " %*s%u\n %*s%u\n", width, "rc_undershoot_pct:", cfg->rc_undershoot_pct, width, "rc_overshoot_pct:", cfg->rc_overshoot_pct); av_log(avctx, level, "decoder buffer model\n" " %*s%u\n %*s%u\n %*s%u\n", width, "rc_buf_sz:", cfg->rc_buf_sz, width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz, width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz); av_log(avctx, level, "2 pass rate control settings\n" " %*s%u\n %*s%u\n %*s%u\n", width, "rc_2pass_vbr_bias_pct:", cfg->rc_2pass_vbr_bias_pct, width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct, width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct); av_log(avctx, level, "keyframing settings\n" " %*s%d\n %*s%u\n %*s%u\n", width, "kf_mode:", cfg->kf_mode, width, "kf_min_dist:", cfg->kf_min_dist, width, "kf_max_dist:", cfg->kf_max_dist); av_log(avctx, level, "\n"); } static void coded_frame_add(void *list, struct FrameListData *cx_frame) { struct FrameListData **p = list; while (*p != NULL) p = &(*p)->next; *p = cx_frame; cx_frame->next = NULL; } static av_cold void free_coded_frame(struct FrameListData *cx_frame) { av_freep(&cx_frame->buf); av_freep(&cx_frame); } static av_cold void free_frame_list(struct FrameListData *list) { struct FrameListData *p = list; while (p) { list = list->next; free_coded_frame(p); p = list; } } static av_cold int codecctl_int(AVCodecContext *avctx, enum vp8e_enc_control_id id, int val) { VP8Context *ctx = avctx->priv_data; char buf[80]; int width = -30; int res; snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]); av_log(avctx, AV_LOG_DEBUG, " %*s%d\n", width, buf, val); res = vpx_codec_control(&ctx->encoder, id, val); if (res != VPX_CODEC_OK) { snprintf(buf, sizeof(buf), "Failed to set %s codec control", ctlidstr[id]); log_encoder_error(avctx, buf); } return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL); } static av_cold int vp8_free(AVCodecContext *avctx) { VP8Context *ctx = avctx->priv_data; vpx_codec_destroy(&ctx->encoder); av_freep(&ctx->twopass_stats.buf); av_freep(&avctx->coded_frame); av_freep(&avctx->stats_out); free_frame_list(ctx->coded_frame_list); return 0; } static av_cold int vp8_init(AVCodecContext *avctx) { VP8Context *ctx = avctx->priv_data; const struct vpx_codec_iface *iface = &vpx_codec_vp8_cx_algo; struct vpx_codec_enc_cfg enccfg; int res; av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str()); av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config()); if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) { av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n", vpx_codec_err_to_string(res)); return AVERROR(EINVAL); } if(!avctx->bit_rate) if(avctx->rc_max_rate || avctx->rc_buffer_size || avctx->rc_initial_buffer_occupancy) { av_log( avctx, AV_LOG_ERROR, "Rate control parameters set without a bitrate\n"); return AVERROR(EINVAL); } dump_enc_cfg(avctx, &enccfg); enccfg.g_w = avctx->width; enccfg.g_h = avctx->height; enccfg.g_timebase.num = avctx->time_base.num; enccfg.g_timebase.den = avctx->time_base.den; enccfg.g_threads = avctx->thread_count; enccfg.g_lag_in_frames= ctx->lag_in_frames; if (avctx->flags & CODEC_FLAG_PASS1) enccfg.g_pass = VPX_RC_FIRST_PASS; else if (avctx->flags & CODEC_FLAG_PASS2) enccfg.g_pass = VPX_RC_LAST_PASS; else enccfg.g_pass = VPX_RC_ONE_PASS; if (avctx->rc_min_rate == avctx->rc_max_rate && avctx->rc_min_rate == avctx->bit_rate && avctx->bit_rate) enccfg.rc_end_usage = VPX_CBR; else if (ctx->crf) enccfg.rc_end_usage = VPX_CQ; if (avctx->bit_rate) { enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000, AV_ROUND_NEAR_INF); } else { if (enccfg.rc_end_usage == VPX_CQ) { enccfg.rc_target_bitrate = 1000000; } else { avctx->bit_rate = enccfg.rc_target_bitrate * 1000; av_log(avctx, AV_LOG_WARNING, "Neither bitrate nor constrained quality specified, using default bitrate of %dkbit/sec\n", enccfg.rc_target_bitrate); } } if (avctx->qmin > 0) enccfg.rc_min_quantizer = avctx->qmin; if (avctx->qmax > 0) enccfg.rc_max_quantizer = avctx->qmax; enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold; //0-100 (0 => CBR, 100 => VBR) enccfg.rc_2pass_vbr_bias_pct = round(avctx->qcompress * 100); if (avctx->bit_rate) enccfg.rc_2pass_vbr_minsection_pct = avctx->rc_min_rate * 100LL / avctx->bit_rate; if (avctx->rc_max_rate) enccfg.rc_2pass_vbr_maxsection_pct = avctx->rc_max_rate * 100LL / avctx->bit_rate; if (avctx->rc_buffer_size) enccfg.rc_buf_sz = avctx->rc_buffer_size * 1000LL / avctx->bit_rate; if (avctx->rc_initial_buffer_occupancy) enccfg.rc_buf_initial_sz = avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate; enccfg.rc_buf_optimal_sz = enccfg.rc_buf_sz * 5 / 6; enccfg.rc_undershoot_pct = round(avctx->rc_buffer_aggressivity * 100); //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size) enccfg.kf_min_dist = avctx->keyint_min; if (avctx->gop_size >= 0) enccfg.kf_max_dist = avctx->gop_size; if (enccfg.g_pass == VPX_RC_FIRST_PASS) enccfg.g_lag_in_frames = 0; else if (enccfg.g_pass == VPX_RC_LAST_PASS) { int decode_size; if (!avctx->stats_in) { av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n"); return AVERROR_INVALIDDATA; } ctx->twopass_stats.sz = strlen(avctx->stats_in) * 3 / 4; ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz); if (!ctx->twopass_stats.buf) { av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%zu bytes) failed\n", ctx->twopass_stats.sz); return AVERROR(ENOMEM); } decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in, ctx->twopass_stats.sz); if (decode_size < 0) { av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n"); return AVERROR_INVALIDDATA; } ctx->twopass_stats.sz = decode_size; enccfg.rc_twopass_stats_in = ctx->twopass_stats; } /* 0-3: For non-zero values the encoder increasingly optimizes for reduced complexity playback on low powered devices at the expense of encode quality. */ if (avctx->profile != FF_PROFILE_UNKNOWN) enccfg.g_profile = avctx->profile; enccfg.g_error_resilient = ctx->error_resilient || ctx->flags & VP8F_ERROR_RESILIENT; dump_enc_cfg(avctx, &enccfg); /* Construct Encoder Context */ res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, 0); if (res != VPX_CODEC_OK) { log_encoder_error(avctx, "Failed to initialize encoder"); return AVERROR(EINVAL); } //codec control failures are currently treated only as warnings av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n"); if (ctx->cpu_used != INT_MIN) codecctl_int(avctx, VP8E_SET_CPUUSED, ctx->cpu_used); if (ctx->flags & VP8F_AUTO_ALT_REF) ctx->auto_alt_ref = 1; if (ctx->auto_alt_ref >= 0) codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref); if (ctx->arnr_max_frames >= 0) codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES, ctx->arnr_max_frames); if (ctx->arnr_strength >= 0) codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH, ctx->arnr_strength); if (ctx->arnr_type >= 0) codecctl_int(avctx, VP8E_SET_ARNR_TYPE, ctx->arnr_type); codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction); codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS, av_log2(avctx->slices)); codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD, avctx->mb_threshold); codecctl_int(avctx, VP8E_SET_CQ_LEVEL, ctx->crf); if (ctx->max_intra_rate >= 0) codecctl_int(avctx, VP8E_SET_MAX_INTRA_BITRATE_PCT, ctx->max_intra_rate); av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline); //provide dummy value to initialize wrapper, values will be updated each _encode() vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1, (unsigned char*)1); avctx->coded_frame = avcodec_alloc_frame(); if (!avctx->coded_frame) { av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n"); vp8_free(avctx); return AVERROR(ENOMEM); } return 0; } static inline void cx_pktcpy(struct FrameListData *dst, const struct vpx_codec_cx_pkt *src) { dst->pts = src->data.frame.pts; dst->duration = src->data.frame.duration; dst->flags = src->data.frame.flags; dst->sz = src->data.frame.sz; dst->buf = src->data.frame.buf; } /** * Store coded frame information in format suitable for return from encode2(). * * Write information from @a cx_frame to @a pkt * @return packet data size on success * @return a negative AVERROR on error */ static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame, AVPacket *pkt, AVFrame *coded_frame) { int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz); if (ret >= 0) { memcpy(pkt->data, cx_frame->buf, pkt->size); pkt->pts = pkt->dts = cx_frame->pts; coded_frame->pts = cx_frame->pts; coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY); if (coded_frame->key_frame) { coded_frame->pict_type = AV_PICTURE_TYPE_I; pkt->flags |= AV_PKT_FLAG_KEY; } else coded_frame->pict_type = AV_PICTURE_TYPE_P; } else { return ret; } return pkt->size; } /** * Queue multiple output frames from the encoder, returning the front-most. * In cases where vpx_codec_get_cx_data() returns more than 1 frame append * the frame queue. Return the head frame if available. * @return Stored frame size * @return AVERROR(EINVAL) on output size error * @return AVERROR(ENOMEM) on coded frame queue data allocation error */ static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out, AVFrame *coded_frame) { VP8Context *ctx = avctx->priv_data; const struct vpx_codec_cx_pkt *pkt; const void *iter = NULL; int size = 0; if (ctx->coded_frame_list) { struct FrameListData *cx_frame = ctx->coded_frame_list; /* return the leading frame if we've already begun queueing */ size = storeframe(avctx, cx_frame, pkt_out, coded_frame); if (size < 0) return size; ctx->coded_frame_list = cx_frame->next; free_coded_frame(cx_frame); } /* consume all available output from the encoder before returning. buffers are only good through the next vpx_codec call */ while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter))) { switch (pkt->kind) { case VPX_CODEC_CX_FRAME_PKT: if (!size) { struct FrameListData cx_frame; /* avoid storing the frame when the list is empty and we haven't yet provided a frame for output */ av_assert0(!ctx->coded_frame_list); cx_pktcpy(&cx_frame, pkt); size = storeframe(avctx, &cx_frame, pkt_out, coded_frame); if (size < 0) return size; } else { struct FrameListData *cx_frame = av_malloc(sizeof(struct FrameListData)); if (!cx_frame) { av_log(avctx, AV_LOG_ERROR, "Frame queue element alloc failed\n"); return AVERROR(ENOMEM); } cx_pktcpy(cx_frame, pkt); cx_frame->buf = av_malloc(cx_frame->sz); if (!cx_frame->buf) { av_log(avctx, AV_LOG_ERROR, "Data buffer alloc (%zu bytes) failed\n", cx_frame->sz); av_free(cx_frame); return AVERROR(ENOMEM); } memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz); coded_frame_add(&ctx->coded_frame_list, cx_frame); } break; case VPX_CODEC_STATS_PKT: { struct vpx_fixed_buf *stats = &ctx->twopass_stats; stats->buf = av_realloc_f(stats->buf, 1, stats->sz + pkt->data.twopass_stats.sz); if (!stats->buf) { av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n"); return AVERROR(ENOMEM); } memcpy((uint8_t*)stats->buf + stats->sz, pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz); stats->sz += pkt->data.twopass_stats.sz; break; } case VPX_CODEC_PSNR_PKT: //FIXME add support for CODEC_FLAG_PSNR case VPX_CODEC_CUSTOM_PKT: //ignore unsupported/unrecognized packet types break; } } return size; } static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet) { VP8Context *ctx = avctx->priv_data; struct vpx_image *rawimg = NULL; int64_t timestamp = 0; long flags = 0; int res, coded_size; if (frame) { rawimg = &ctx->rawimg; rawimg->planes[VPX_PLANE_Y] = frame->data[0]; rawimg->planes[VPX_PLANE_U] = frame->data[1]; rawimg->planes[VPX_PLANE_V] = frame->data[2]; rawimg->stride[VPX_PLANE_Y] = frame->linesize[0]; rawimg->stride[VPX_PLANE_U] = frame->linesize[1]; rawimg->stride[VPX_PLANE_V] = frame->linesize[2]; timestamp = frame->pts; flags = frame->pict_type == AV_PICTURE_TYPE_I ? VPX_EFLAG_FORCE_KF : 0; } res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp, avctx->ticks_per_frame, flags, ctx->deadline); if (res != VPX_CODEC_OK) { log_encoder_error(avctx, "Error encoding frame"); return AVERROR_INVALIDDATA; } coded_size = queue_frames(avctx, pkt, avctx->coded_frame); if (!frame && avctx->flags & CODEC_FLAG_PASS1) { unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz); avctx->stats_out = av_malloc(b64_size); if (!avctx->stats_out) { av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n", b64_size); return AVERROR(ENOMEM); } av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf, ctx->twopass_stats.sz); } *got_packet = !!coded_size; return 0; } #define OFFSET(x) offsetof(VP8Context, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "cpu-used", "Quality/Speed ratio modifier", OFFSET(cpu_used), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE}, { "auto-alt-ref", "Enable use of alternate reference " "frames (2-pass only)", OFFSET(auto_alt_ref), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE}, { "lag-in-frames", "Number of frames to look ahead for " "alternate reference frame selection", OFFSET(lag_in_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, { "arnr-maxframes", "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, { "arnr-strength", "altref noise reduction filter strength", OFFSET(arnr_strength), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, { "arnr-type", "altref noise reduction filter type", OFFSET(arnr_type), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE, "arnr_type"}, { "backward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "arnr_type" }, { "forward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "arnr_type" }, { "centered", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "arnr_type" }, { "deadline", "Time to spend encoding, in microseconds.", OFFSET(deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, { "best", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"}, { "good", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"}, { "realtime", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_REALTIME}, 0, 0, VE, "quality"}, { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, VE, "er"}, { "max-intra-rate", "Maximum I-frame bitrate (pct) 0=unlimited", OFFSET(max_intra_rate), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE}, #ifdef VPX_ERROR_RESILIENT_DEFAULT { "default", "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"}, { "partitions", "The frame partitions are independently decodable " "by the bool decoder, meaning that partitions can be decoded even " "though earlier partitions have been lost. Note that intra predicition" " is still done over the partition boundary.", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"}, #endif {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 3}, -16, 16, VE}, {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"}, {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.i64 = 0}, 0, UINT_MAX, VE, "flags"}, {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"}, {"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"}, {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 15, VE}, {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.i64 = 3}, 0, 6, VE}, {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.i64 = 3}, 1, 3, VE}, {"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}, { "crf", "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, VE }, { NULL } }; static const AVClass class = { .class_name = "libvpx encoder", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; static const AVCodecDefault defaults[] = { { "qmin", "-1" }, { "qmax", "-1" }, { "g", "-1" }, { "keyint_min", "-1" }, { NULL }, }; AVCodec ff_libvpx_encoder = { .name = "libvpx", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_VP8, .priv_data_size = sizeof(VP8Context), .init = vp8_init, .encode2 = vp8_encode, .close = vp8_free, .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"), .priv_class = &class, .defaults = defaults, };