/*

 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.

 *

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

 */

#include <assert.h>

#include <limits.h>

#include <stdint.h>

#include <stdlib.h>

#include <string.h>

#include "./vpx_config.h"

#include "./vp8_rtcd.h"

#include "./vpx_dsp_rtcd.h"

#include "./vpx_scale_rtcd.h"

#include "vpx/vpx_encoder.h"

#include "vpx/internal/vpx_codec_internal.h"

#include "vpx_version.h"

#include "vpx_mem/vpx_mem.h"

#include "vpx_ports/static_assert.h"

#include "vpx_ports/system_state.h"

#include "vpx_util/vpx_timestamp.h"

#if CONFIG_MULTITHREAD

#include "vp8/encoder/ethreading.h"

#endif

#include "vp8/encoder/onyx_int.h"

#include "vp8/encoder/block.h"

#include "vpx/vp8cx.h"

#include "vp8/encoder/firstpass.h"

#include "vp8/common/onyx.h"

#include "vp8/common/common.h"

struct vp8_extracfg {

  struct vpx_codec_pkt_list *pkt_list;

  int cpu_used; /** available cpu percentage in 1/16*/

  /** if encoder decides to uses alternate reference frame */

  unsigned int enable_auto_alt_ref;

  unsigned int noise_sensitivity;

  unsigned int Sharpness;

  unsigned int static_thresh;

  unsigned int token_partitions;

  unsigned int arnr_max_frames; /* alt_ref Noise Reduction Max Frame Count */

  unsigned int arnr_strength;   /* alt_ref Noise Reduction Strength */

  unsigned int arnr_type;       /* alt_ref filter type */

  vp8e_tuning tuning;

  unsigned int cq_level; /* constrained quality level */

  unsigned int rc_max_intra_bitrate_pct;

  unsigned int gf_cbr_boost_pct;

  unsigned int screen_content_mode;

};

static struct vp8_extracfg default_extracfg = {

  NULL,

#if !(CONFIG_REALTIME_ONLY)

  0, /* cpu_used      */

#else

  4, /* cpu_used      */

#endif

  0, /* enable_auto_alt_ref */

  0, /* noise_sensitivity */

  0, /* Sharpness */

  0, /* static_thresh */

#if (CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING)

  VP8_EIGHT_TOKENPARTITION,

#else

  VP8_ONE_TOKENPARTITION, /* token_partitions */

#endif

  0,  /* arnr_max_frames */

  3,  /* arnr_strength */

  3,  /* arnr_type*/

  0,  /* tuning*/

  10, /* cq_level */

  0,  /* rc_max_intra_bitrate_pct */

  0,  /* gf_cbr_boost_pct */

  0,  /* screen_content_mode */

};

struct vpx_codec_alg_priv {

  vpx_codec_priv_t base;

  vpx_codec_enc_cfg_t cfg;

  struct vp8_extracfg vp8_cfg;

  vpx_rational64_t timestamp_ratio;

  vpx_codec_pts_t pts_offset;

  unsigned char pts_offset_initialized;

  VP8_CONFIG oxcf;

  struct VP8_COMP *cpi;

  unsigned char *cx_data;

  unsigned int cx_data_sz;

  vpx_image_t preview_img;

  unsigned int next_frame_flag;

  vp8_postproc_cfg_t preview_ppcfg;

  /* pkt_list size depends on the maximum number of lagged frames allowed. */

  vpx_codec_pkt_list_decl(64) pkt_list;

  unsigned int fixed_kf_cntr;

  vpx_enc_frame_flags_t control_frame_flags;

};

// Called by update_extracfg(), vp8e_set_config() and vp8e_encode() only. Must

// not be called by vp8e_init() because the `error` paramerer

// (cpi->common.error) will be destroyed by vpx_codec_enc_init_ver() after

// vp8e_init() returns an error.

// See the "IMPORTANT" comment in vpx_codec_enc_init_ver().

static vpx_codec_err_t update_error_state(

    vpx_codec_alg_priv_t *ctx, const struct vpx_internal_error_info *error) {

  const vpx_codec_err_t res = error->error_code;

  if (res != VPX_CODEC_OK)

    ctx->base.err_detail = error->has_detail ? error->detail : NULL;

  return res;

}

#undef ERROR

#define ERROR(str)                  \

  do {                              \

    ctx->base.err_detail = str;     \

    return VPX_CODEC_INVALID_PARAM; \

  } while (0)

#define RANGE_CHECK(p, memb, lo, hi)                                     \

  do {                                                                   \

    if (!(((p)->memb == (lo) || (p)->memb > (lo)) && (p)->memb <= (hi))) \

      ERROR(#memb " out of range [" #lo ".." #hi "]");                   \

  } while (0)

#define RANGE_CHECK_HI(p, memb, hi)                                     \

  do {                                                                  \

    if (!((p)->memb <= (hi))) ERROR(#memb " out of range [.." #hi "]"); \

  } while (0)

#define RANGE_CHECK_LO(p, memb, lo)                                     \

  do {                                                                  \

    if (!((p)->memb >= (lo))) ERROR(#memb " out of range [" #lo "..]"); \

  } while (0)

#define RANGE_CHECK_BOOL(p, memb)                                     \

  do {                                                                \

    if (!!((p)->memb) != (p)->memb) ERROR(#memb " expected boolean"); \

  } while (0)

static vpx_codec_err_t validate_config(vpx_codec_alg_priv_t *ctx,

                                       const vpx_codec_enc_cfg_t *cfg,

                                       const struct vp8_extracfg *vp8_cfg,

                                       int finalize) {

  RANGE_CHECK(cfg, g_w, 1, 16383); /* 14 bits available */

  RANGE_CHECK(cfg, g_h, 1, 16383); /* 14 bits available */

  RANGE_CHECK(cfg, g_timebase.den, 1, 1000000000);

  RANGE_CHECK(cfg, g_timebase.num, 1, 1000000000);

  RANGE_CHECK_HI(cfg, g_profile, 3);

  RANGE_CHECK_HI(cfg, rc_max_quantizer, 63);

  RANGE_CHECK_HI(cfg, rc_min_quantizer, cfg->rc_max_quantizer);

  RANGE_CHECK_HI(cfg, g_threads, 64);

#if CONFIG_REALTIME_ONLY

  RANGE_CHECK_HI(cfg, g_lag_in_frames, 0);

#elif CONFIG_MULTI_RES_ENCODING

  if (ctx->base.enc.total_encoders > 1) RANGE_CHECK_HI(cfg, g_lag_in_frames, 0);

#else

  RANGE_CHECK_HI(cfg, g_lag_in_frames, 25);

#endif

  RANGE_CHECK(cfg, rc_end_usage, VPX_VBR, VPX_Q);

  RANGE_CHECK_HI(cfg, rc_undershoot_pct, 100);

  RANGE_CHECK_HI(cfg, rc_overshoot_pct, 100);

  RANGE_CHECK_HI(cfg, rc_2pass_vbr_bias_pct, 100);

  RANGE_CHECK(cfg, kf_mode, VPX_KF_DISABLED, VPX_KF_AUTO);

/* TODO: add spatial re-sampling support and frame dropping in

 * multi-res-encoder.*/

#if CONFIG_MULTI_RES_ENCODING

  if (ctx->base.enc.total_encoders > 1)

    RANGE_CHECK_HI(cfg, rc_resize_allowed, 0);

#else

  RANGE_CHECK_BOOL(cfg, rc_resize_allowed);

#endif

  RANGE_CHECK_HI(cfg, rc_dropframe_thresh, 100);

  RANGE_CHECK_HI(cfg, rc_resize_up_thresh, 100);

  RANGE_CHECK_HI(cfg, rc_resize_down_thresh, 100);

#if CONFIG_REALTIME_ONLY

  RANGE_CHECK(cfg, g_pass, VPX_RC_ONE_PASS, VPX_RC_ONE_PASS);

#elif CONFIG_MULTI_RES_ENCODING

  if (ctx->base.enc.total_encoders > 1)

    RANGE_CHECK(cfg, g_pass, VPX_RC_ONE_PASS, VPX_RC_ONE_PASS);

#else

  RANGE_CHECK(cfg, g_pass, VPX_RC_ONE_PASS, VPX_RC_LAST_PASS);

#endif

  /* VP8 does not support a lower bound on the keyframe interval in

   * automatic keyframe placement mode.

   */

  if (cfg->kf_mode != VPX_KF_DISABLED && cfg->kf_min_dist != cfg->kf_max_dist &&

      cfg->kf_min_dist > 0)

    ERROR(

        "kf_min_dist not supported in auto mode, use 0 "

        "or kf_max_dist instead.");

  RANGE_CHECK_BOOL(vp8_cfg, enable_auto_alt_ref);

  RANGE_CHECK(vp8_cfg, cpu_used, -16, 16);

  /* Prevent (static_thresh >> 7) from exceeding MAX_ERROR_BINS (1024) */

  RANGE_CHECK_HI(vp8_cfg, static_thresh, (MAX_ERROR_BINS << 7) - 1);

#if CONFIG_REALTIME_ONLY && !CONFIG_TEMPORAL_DENOISING

  RANGE_CHECK(vp8_cfg, noise_sensitivity, 0, 0);

#else

  RANGE_CHECK_HI(vp8_cfg, noise_sensitivity, 6);

#endif

  RANGE_CHECK(vp8_cfg, token_partitions, VP8_ONE_TOKENPARTITION,

              VP8_EIGHT_TOKENPARTITION);

  RANGE_CHECK_HI(vp8_cfg, Sharpness, 7);

  RANGE_CHECK(vp8_cfg, arnr_max_frames, 0, 15);

  RANGE_CHECK_HI(vp8_cfg, arnr_strength, 6);

  RANGE_CHECK(vp8_cfg, arnr_type, 1, 3);

  RANGE_CHECK(vp8_cfg, cq_level, 0, 63);

  RANGE_CHECK_HI(vp8_cfg, screen_content_mode, 2);

  if (finalize && (cfg->rc_end_usage == VPX_CQ || cfg->rc_end_usage == VPX_Q))

    RANGE_CHECK(vp8_cfg, cq_level, cfg->rc_min_quantizer,

                cfg->rc_max_quantizer);

  RANGE_CHECK(cfg, ss_number_layers, 1, VPX_SS_MAX_LAYERS);

  RANGE_CHECK(cfg, ts_number_layers, 1, 5);

  if (cfg->ts_number_layers > 1) {

    unsigned int i;

    RANGE_CHECK(cfg, ts_periodicity, 1, 16);

    for (i = 1; i < cfg->ts_number_layers; ++i) {

      if (cfg->ts_target_bitrate[i] <= cfg->ts_target_bitrate[i - 1] &&

          cfg->rc_target_bitrate > 0)

        ERROR("ts_target_bitrate entries are not strictly increasing");

    }

    RANGE_CHECK(cfg, ts_rate_decimator[cfg->ts_number_layers - 1], 1, 1);

    for (i = cfg->ts_number_layers - 2; i > 0; i--) {

      if (cfg->ts_rate_decimator[i - 1] != 2 * cfg->ts_rate_decimator[i])

        ERROR("ts_rate_decimator factors are not powers of 2");

    }

    for (i = 0; i < cfg->ts_periodicity; ++i) {

      RANGE_CHECK_HI(cfg, ts_layer_id[i], cfg->ts_number_layers - 1);

    }

  }

#if (CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING)

  if (cfg->g_threads > (1 << vp8_cfg->token_partitions))

    ERROR("g_threads cannot be bigger than number of token partitions");

#endif

  // The range below shall be further tuned.

  RANGE_CHECK(cfg, use_vizier_rc_params, 0, 1);

  RANGE_CHECK(cfg, active_wq_factor.den, 1, 1000);

  RANGE_CHECK(cfg, err_per_mb_factor.den, 1, 1000);

  RANGE_CHECK(cfg, sr_default_decay_limit.den, 1, 1000);

  RANGE_CHECK(cfg, sr_diff_factor.den, 1, 1000);

  RANGE_CHECK(cfg, kf_err_per_mb_factor.den, 1, 1000);

  RANGE_CHECK(cfg, kf_frame_min_boost_factor.den, 1, 1000);

  RANGE_CHECK(cfg, kf_frame_max_boost_first_factor.den, 1, 1000);

  RANGE_CHECK(cfg, kf_frame_max_boost_subs_factor.den, 1, 1000);

  RANGE_CHECK(cfg, kf_max_total_boost_factor.den, 1, 1000);

  RANGE_CHECK(cfg, gf_max_total_boost_factor.den, 1, 1000);

  RANGE_CHECK(cfg, gf_frame_max_boost_factor.den, 1, 1000);

  RANGE_CHECK(cfg, zm_factor.den, 1, 1000);

  RANGE_CHECK(cfg, rd_mult_inter_qp_fac.den, 1, 1000);

  RANGE_CHECK(cfg, rd_mult_arf_qp_fac.den, 1, 1000);

  RANGE_CHECK(cfg, rd_mult_key_qp_fac.den, 1, 1000);

#if !(CONFIG_REALTIME_ONLY)

  if (cfg->g_pass == VPX_RC_LAST_PASS) {

    const size_t packet_sz = sizeof(FIRSTPASS_STATS);

    const int n_packets = (int)(cfg->rc_twopass_stats_in.sz / packet_sz);

    const FIRSTPASS_STATS *stats;

    if (!cfg->rc_twopass_stats_in.buf) {

      ERROR("rc_twopass_stats_in.buf not set.");

    }

    if (cfg->rc_twopass_stats_in.sz % packet_sz) {

      ERROR("rc_twopass_stats_in.sz indicates truncated packet.");

    }

    if (cfg->rc_twopass_stats_in.sz < 2 * packet_sz) {

      ERROR("rc_twopass_stats_in requires at least two packets.");

    }

    stats =

        (const FIRSTPASS_STATS *)cfg->rc_twopass_stats_in.buf + n_packets - 1;

    if ((int)(stats->count + 0.5) != n_packets - 1) {

      ERROR("rc_twopass_stats_in missing EOS stats packet");

    }

  }

#endif

  return VPX_CODEC_OK;

}

static vpx_codec_err_t validate_img(vpx_codec_alg_priv_t *ctx,

                                    const vpx_image_t *img) {

  switch (img->fmt) {

    case VPX_IMG_FMT_YV12:

    case VPX_IMG_FMT_I420:

    case VPX_IMG_FMT_NV12: break;

    default:

      ERROR(

          "Invalid image format. Only YV12, I420 and NV12 images are "

          "supported");

  }

  if ((img->d_w != ctx->cfg.g_w) || (img->d_h != ctx->cfg.g_h))

    ERROR("Image size must match encoder init configuration size");

  assert(img->fmt & VPX_IMG_FMT_PLANAR);

  if (img->stride[VPX_PLANE_U] != img->stride[VPX_PLANE_V])

    ERROR("Image U/V strides must match");

  return VPX_CODEC_OK;

}

static vpx_codec_err_t set_vp8e_config(VP8_CONFIG *oxcf,

                                       vpx_codec_enc_cfg_t cfg,

                                       struct vp8_extracfg vp8_cfg,

                                       vpx_codec_priv_enc_mr_cfg_t *mr_cfg) {

  oxcf->multi_threaded = cfg.g_threads;

  oxcf->Version = cfg.g_profile;

  oxcf->Width = cfg.g_w;

  oxcf->Height = cfg.g_h;

  oxcf->timebase = cfg.g_timebase;

  oxcf->error_resilient_mode =

      cfg.g_error_resilient &

      (VPX_ERROR_RESILIENT_DEFAULT | VPX_ERROR_RESILIENT_PARTITIONS);

  switch (cfg.g_pass) {

    case VPX_RC_ONE_PASS: oxcf->Mode = MODE_BESTQUALITY; break;

    case VPX_RC_FIRST_PASS: oxcf->Mode = MODE_FIRSTPASS; break;

    case VPX_RC_LAST_PASS: oxcf->Mode = MODE_SECONDPASS_BEST; break;

  }

  if (cfg.g_pass == VPX_RC_FIRST_PASS || cfg.g_pass == VPX_RC_ONE_PASS) {

    oxcf->allow_lag = 0;

    oxcf->lag_in_frames = 0;

  } else {

    oxcf->allow_lag = (cfg.g_lag_in_frames) > 0;

    oxcf->lag_in_frames = cfg.g_lag_in_frames;

  }

  oxcf->allow_df = (cfg.rc_dropframe_thresh > 0);

  oxcf->drop_frames_water_mark = cfg.rc_dropframe_thresh;

  oxcf->allow_spatial_resampling = cfg.rc_resize_allowed;

  oxcf->resample_up_water_mark = cfg.rc_resize_up_thresh;

  oxcf->resample_down_water_mark = cfg.rc_resize_down_thresh;

  if (cfg.rc_end_usage == VPX_VBR) {

    oxcf->end_usage = USAGE_LOCAL_FILE_PLAYBACK;

  } else if (cfg.rc_end_usage == VPX_CBR) {

    oxcf->end_usage = USAGE_STREAM_FROM_SERVER;

  } else if (cfg.rc_end_usage == VPX_CQ) {

    oxcf->end_usage = USAGE_CONSTRAINED_QUALITY;

  } else if (cfg.rc_end_usage == VPX_Q) {

    oxcf->end_usage = USAGE_CONSTANT_QUALITY;

  }

  // Cap the target rate to 1000 Mbps to avoid some integer overflows in

  // target bandwidth calculations.

  oxcf->target_bandwidth = VPXMIN(cfg.rc_target_bitrate, 1000000);

  oxcf->rc_max_intra_bitrate_pct = vp8_cfg.rc_max_intra_bitrate_pct;

  oxcf->gf_cbr_boost_pct = vp8_cfg.gf_cbr_boost_pct;

  oxcf->best_allowed_q = cfg.rc_min_quantizer;

  oxcf->worst_allowed_q = cfg.rc_max_quantizer;

  oxcf->cq_level = vp8_cfg.cq_level;

  oxcf->fixed_q = -1;

  oxcf->under_shoot_pct = cfg.rc_undershoot_pct;

  oxcf->over_shoot_pct = cfg.rc_overshoot_pct;

  oxcf->maximum_buffer_size_in_ms = cfg.rc_buf_sz;

  oxcf->starting_buffer_level_in_ms = cfg.rc_buf_initial_sz;

  oxcf->optimal_buffer_level_in_ms = cfg.rc_buf_optimal_sz;

  oxcf->maximum_buffer_size = cfg.rc_buf_sz;

  oxcf->starting_buffer_level = cfg.rc_buf_initial_sz;

  oxcf->optimal_buffer_level = cfg.rc_buf_optimal_sz;

  oxcf->two_pass_vbrbias = cfg.rc_2pass_vbr_bias_pct;

  oxcf->two_pass_vbrmin_section = cfg.rc_2pass_vbr_minsection_pct;

  oxcf->two_pass_vbrmax_section = cfg.rc_2pass_vbr_maxsection_pct;

  oxcf->auto_key =

      cfg.kf_mode == VPX_KF_AUTO && cfg.kf_min_dist != cfg.kf_max_dist;

  oxcf->key_freq = cfg.kf_max_dist;

  oxcf->number_of_layers = cfg.ts_number_layers;

  oxcf->periodicity = cfg.ts_periodicity;

  if (oxcf->number_of_layers > 1) {

    memcpy(oxcf->target_bitrate, cfg.ts_target_bitrate,

           sizeof(cfg.ts_target_bitrate));

    memcpy(oxcf->rate_decimator, cfg.ts_rate_decimator,

           sizeof(cfg.ts_rate_decimator));

    memcpy(oxcf->layer_id, cfg.ts_layer_id, sizeof(cfg.ts_layer_id));

  }

#if CONFIG_MULTI_RES_ENCODING

  /* When mr_cfg is NULL, oxcf->mr_total_resolutions and oxcf->mr_encoder_id

   * are both memset to 0, which ensures the correct logic under this

   * situation.

   */

  if (mr_cfg) {

    oxcf->mr_total_resolutions = mr_cfg->mr_total_resolutions;

    oxcf->mr_encoder_id = mr_cfg->mr_encoder_id;

    oxcf->mr_down_sampling_factor = mr_cfg->mr_down_sampling_factor;

    oxcf->mr_low_res_mode_info = mr_cfg->mr_low_res_mode_info;

  }

#else

  (void)mr_cfg;

#endif

  oxcf->cpu_used = vp8_cfg.cpu_used;

  if (cfg.g_pass == VPX_RC_FIRST_PASS) {

    oxcf->cpu_used = VPXMAX(4, oxcf->cpu_used);

  }

  oxcf->encode_breakout = vp8_cfg.static_thresh;

  oxcf->play_alternate = vp8_cfg.enable_auto_alt_ref;

  oxcf->noise_sensitivity = vp8_cfg.noise_sensitivity;

  oxcf->Sharpness = vp8_cfg.Sharpness;

  oxcf->token_partitions = vp8_cfg.token_partitions;

  oxcf->two_pass_stats_in = cfg.rc_twopass_stats_in;

  oxcf->output_pkt_list = vp8_cfg.pkt_list;

  oxcf->arnr_max_frames = vp8_cfg.arnr_max_frames;

  oxcf->arnr_strength = vp8_cfg.arnr_strength;

  oxcf->arnr_type = vp8_cfg.arnr_type;

  oxcf->tuning = vp8_cfg.tuning;

  oxcf->screen_content_mode = vp8_cfg.screen_content_mode;

  /*

      printf("Current VP8 Settings: \n");

      printf("target_bandwidth: %d\n", oxcf->target_bandwidth);

      printf("noise_sensitivity: %d\n", oxcf->noise_sensitivity);

      printf("Sharpness: %d\n",    oxcf->Sharpness);

      printf("cpu_used: %d\n",  oxcf->cpu_used);

      printf("Mode: %d\n",     oxcf->Mode);

      printf("auto_key: %d\n",  oxcf->auto_key);

      printf("key_freq: %d\n", oxcf->key_freq);

      printf("end_usage: %d\n", oxcf->end_usage);

      printf("under_shoot_pct: %d\n", oxcf->under_shoot_pct);

      printf("over_shoot_pct: %d\n", oxcf->over_shoot_pct);

      printf("starting_buffer_level: %d\n", oxcf->starting_buffer_level);

      printf("optimal_buffer_level: %d\n",  oxcf->optimal_buffer_level);

      printf("maximum_buffer_size: %d\n", oxcf->maximum_buffer_size);

      printf("fixed_q: %d\n",  oxcf->fixed_q);

      printf("worst_allowed_q: %d\n", oxcf->worst_allowed_q);

      printf("best_allowed_q: %d\n", oxcf->best_allowed_q);

      printf("allow_spatial_resampling: %d\n",  oxcf->allow_spatial_resampling);

      printf("resample_down_water_mark: %d\n", oxcf->resample_down_water_mark);

      printf("resample_up_water_mark: %d\n", oxcf->resample_up_water_mark);

      printf("allow_df: %d\n", oxcf->allow_df);

      printf("drop_frames_water_mark: %d\n", oxcf->drop_frames_water_mark);

      printf("two_pass_vbrbias: %d\n",  oxcf->two_pass_vbrbias);

      printf("two_pass_vbrmin_section: %d\n", oxcf->two_pass_vbrmin_section);

      printf("two_pass_vbrmax_section: %d\n", oxcf->two_pass_vbrmax_section);

      printf("allow_lag: %d\n", oxcf->allow_lag);

      printf("lag_in_frames: %d\n", oxcf->lag_in_frames);

      printf("play_alternate: %d\n", oxcf->play_alternate);

      printf("Version: %d\n", oxcf->Version);

      printf("multi_threaded: %d\n",   oxcf->multi_threaded);

      printf("encode_breakout: %d\n", oxcf->encode_breakout);

  */

  return VPX_CODEC_OK;

}

static vpx_codec_err_t vp8e_set_config(vpx_codec_alg_priv_t *ctx,

                                       const vpx_codec_enc_cfg_t *cfg) {

  vpx_codec_err_t res;

  if (cfg->g_w != ctx->cfg.g_w || cfg->g_h != ctx->cfg.g_h) {

    if (cfg->g_lag_in_frames > 1 || cfg->g_pass != VPX_RC_ONE_PASS)

      ERROR("Cannot change width or height after initialization");

    if ((ctx->cpi->initial_width && (int)cfg->g_w > ctx->cpi->initial_width) ||

        (ctx->cpi->initial_height && (int)cfg->g_h > ctx->cpi->initial_height))

      ERROR("Cannot increase width or height larger than their initial values");

  }

  /* Prevent increasing lag_in_frames. This check is stricter than it needs

   * to be -- the limit is not increasing past the first lag_in_frames

   * value, but we don't track the initial config, only the last successful

   * config.

   */

  if ((cfg->g_lag_in_frames > ctx->cfg.g_lag_in_frames))

    ERROR("Cannot increase lag_in_frames");

  res = validate_config(ctx, cfg, &ctx->vp8_cfg, 0);

  if (res != VPX_CODEC_OK) return res;

  if (setjmp(ctx->cpi->common.error.jmp)) {

    const vpx_codec_err_t codec_err =

        update_error_state(ctx, &ctx->cpi->common.error);

    ctx->cpi->common.error.setjmp = 0;

    vpx_clear_system_state();

    assert(codec_err != VPX_CODEC_OK);

    return codec_err;

  }

  ctx->cpi->common.error.setjmp = 1;

  ctx->cfg = *cfg;

  set_vp8e_config(&ctx->oxcf, ctx->cfg, ctx->vp8_cfg, NULL);

  vp8_change_config(ctx->cpi, &ctx->oxcf);

#if CONFIG_MULTITHREAD

  if (vp8cx_create_encoder_threads(ctx->cpi)) {

    ctx->cpi->common.error.setjmp = 0;

    return VPX_CODEC_ERROR;

  }

#endif

  ctx->cpi->common.error.setjmp = 0;

  return VPX_CODEC_OK;

}

static vpx_codec_err_t get_quantizer(vpx_codec_alg_priv_t *ctx, va_list args) {

  int *const arg = va_arg(args, int *);

  if (arg == NULL) return VPX_CODEC_INVALID_PARAM;

  *arg = vp8_get_quantizer(ctx->cpi);

  return VPX_CODEC_OK;

}

static vpx_codec_err_t get_quantizer64(vpx_codec_alg_priv_t *ctx,

                                       va_list args) {

  int *const arg = va_arg(args, int *);

  if (arg == NULL) return VPX_CODEC_INVALID_PARAM;

  *arg = vp8_reverse_trans(vp8_get_quantizer(ctx->cpi));

  return VPX_CODEC_OK;

}

static vpx_codec_err_t update_extracfg(vpx_codec_alg_priv_t *ctx,

                                       const struct vp8_extracfg *extra_cfg) {

  const vpx_codec_err_t res = validate_config(ctx, &ctx->cfg, extra_cfg, 0);

  if (res != VPX_CODEC_OK) return res;

  if (setjmp(ctx->cpi->common.error.jmp)) {

    const vpx_codec_err_t codec_err =

        update_error_state(ctx, &ctx->cpi->common.error);

    ctx->cpi->common.error.setjmp = 0;

    vpx_clear_system_state();

    assert(codec_err != VPX_CODEC_OK);

    return codec_err;

  }

  ctx->cpi->common.error.setjmp = 1;

  ctx->vp8_cfg = *extra_cfg;

  set_vp8e_config(&ctx->oxcf, ctx->cfg, ctx->vp8_cfg, NULL);

  vp8_change_config(ctx->cpi, &ctx->oxcf);

  ctx->cpi->common.error.setjmp = 0;

  return VPX_CODEC_OK;

}

static vpx_codec_err_t set_cpu_used(vpx_codec_alg_priv_t *ctx, va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.cpu_used = CAST(VP8E_SET_CPUUSED, args);

  // Use fastest speed setting (speed 16 or -16) if it's set beyond the range.

  extra_cfg.cpu_used = VPXMIN(16, extra_cfg.cpu_used);

  extra_cfg.cpu_used = VPXMAX(-16, extra_cfg.cpu_used);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_enable_auto_alt_ref(vpx_codec_alg_priv_t *ctx,

                                               va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.enable_auto_alt_ref = CAST(VP8E_SET_ENABLEAUTOALTREF, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_noise_sensitivity(vpx_codec_alg_priv_t *ctx,

                                             va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.noise_sensitivity = CAST(VP8E_SET_NOISE_SENSITIVITY, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_sharpness(vpx_codec_alg_priv_t *ctx, va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.Sharpness = CAST(VP8E_SET_SHARPNESS, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_static_thresh(vpx_codec_alg_priv_t *ctx,

                                         va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.static_thresh = CAST(VP8E_SET_STATIC_THRESHOLD, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_token_partitions(vpx_codec_alg_priv_t *ctx,

                                            va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.token_partitions = CAST(VP8E_SET_TOKEN_PARTITIONS, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_arnr_max_frames(vpx_codec_alg_priv_t *ctx,

                                           va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.arnr_max_frames = CAST(VP8E_SET_ARNR_MAXFRAMES, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_arnr_strength(vpx_codec_alg_priv_t *ctx,

                                         va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.arnr_strength = CAST(VP8E_SET_ARNR_STRENGTH, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_arnr_type(vpx_codec_alg_priv_t *ctx, va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.arnr_type = CAST(VP8E_SET_ARNR_TYPE, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_tuning(vpx_codec_alg_priv_t *ctx, va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.tuning = CAST(VP8E_SET_TUNING, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_cq_level(vpx_codec_alg_priv_t *ctx, va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.cq_level = CAST(VP8E_SET_CQ_LEVEL, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_rc_max_intra_bitrate_pct(vpx_codec_alg_priv_t *ctx,

                                                    va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.rc_max_intra_bitrate_pct =

      CAST(VP8E_SET_MAX_INTRA_BITRATE_PCT, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t ctrl_set_rc_gf_cbr_boost_pct(vpx_codec_alg_priv_t *ctx,

                                                    va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.gf_cbr_boost_pct = CAST(VP8E_SET_GF_CBR_BOOST_PCT, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t set_screen_content_mode(vpx_codec_alg_priv_t *ctx,

                                               va_list args) {

  struct vp8_extracfg extra_cfg = ctx->vp8_cfg;

  extra_cfg.screen_content_mode = CAST(VP8E_SET_SCREEN_CONTENT_MODE, args);

  return update_extracfg(ctx, &extra_cfg);

}

static vpx_codec_err_t ctrl_set_rtc_external_ratectrl(vpx_codec_alg_priv_t *ctx,

                                                      va_list args) {

  VP8_COMP *cpi = ctx->cpi;

  const unsigned int data = CAST(VP8E_SET_RTC_EXTERNAL_RATECTRL, args);

  if (data) {

    cpi->cyclic_refresh_mode_enabled = 0;

    cpi->rt_always_update_correction_factor = 1;

    cpi->rt_drop_recode_on_overshoot = 0;

  }

  return VPX_CODEC_OK;

}

static vpx_codec_err_t vp8e_mr_alloc_mem(const vpx_codec_enc_cfg_t *cfg,

                                         void **mem_loc) {

  vpx_codec_err_t res = VPX_CODEC_OK;

#if CONFIG_MULTI_RES_ENCODING

  LOWER_RES_FRAME_INFO *shared_mem_loc;

  int mb_rows = ((cfg->g_w + 15) >> 4);

  int mb_cols = ((cfg->g_h + 15) >> 4);

  shared_mem_loc = calloc(1, sizeof(LOWER_RES_FRAME_INFO));

  if (!shared_mem_loc) {

    return VPX_CODEC_MEM_ERROR;

  }

  shared_mem_loc->mb_info =

      calloc(mb_rows * mb_cols, sizeof(LOWER_RES_MB_INFO));

  if (!(shared_mem_loc->mb_info)) {

    free(shared_mem_loc);

    res = VPX_CODEC_MEM_ERROR;

  } else {

    *mem_loc = (void *)shared_mem_loc;

    res = VPX_CODEC_OK;

  }

#else

  (void)cfg;

  *mem_loc = NULL;

#endif

  return res;

}

static void vp8e_mr_free_mem(void *mem_loc) {

#if CONFIG_MULTI_RES_ENCODING

  LOWER_RES_FRAME_INFO *shared_mem_loc = (LOWER_RES_FRAME_INFO *)mem_loc;

  free(shared_mem_loc->mb_info);

  free(mem_loc);

#else

  (void)mem_loc;

  assert(!mem_loc);

#endif

}

static vpx_codec_err_t vp8e_init(vpx_codec_ctx_t *ctx,

                                 vpx_codec_priv_enc_mr_cfg_t *mr_cfg) {

  vpx_codec_err_t res = VPX_CODEC_OK;

  vp8_rtcd();

  vpx_dsp_rtcd();

  vpx_scale_rtcd();

  if (!ctx->priv) {

    struct vpx_codec_alg_priv *priv =

        (struct vpx_codec_alg_priv *)vpx_calloc(1, sizeof(*priv));

    if (!priv) {

      return VPX_CODEC_MEM_ERROR;

    }

    ctx->priv = (vpx_codec_priv_t *)priv;

    ctx->priv->init_flags = ctx->init_flags;

    if (ctx->config.enc) {

      /* Update the reference to the config structure to an

       * internal copy.

       */

      priv->cfg = *ctx->config.enc;

      ctx->config.enc = &priv->cfg;

    }

    priv->vp8_cfg = default_extracfg;

    priv->vp8_cfg.pkt_list = &priv->pkt_list.head;

    priv->cx_data_sz = priv->cfg.g_w * priv->cfg.g_h * 3 / 2 * 2;

    if (priv->cx_data_sz < 32768) priv->cx_data_sz = 32768;

    priv->cx_data = malloc(priv->cx_data_sz);

    if (!priv->cx_data) {

      priv->cx_data_sz = 0;

      return VPX_CODEC_MEM_ERROR;

    }

    if (mr_cfg) {

      ctx->priv->enc.total_encoders = mr_cfg->mr_total_resolutions;

    } else {

      ctx->priv->enc.total_encoders = 1;

    }

    vp8_initialize_enc();

    res = validate_config(priv, &priv->cfg, &priv->vp8_cfg, 0);

    if (!res) {

      priv->pts_offset_initialized = 0;

      priv->timestamp_ratio.den = priv->cfg.g_timebase.den;

      priv->timestamp_ratio.num = (int64_t)priv->cfg.g_timebase.num;

      priv->timestamp_ratio.num *= TICKS_PER_SEC;

      reduce_ratio(&priv->timestamp_ratio);

      set_vp8e_config(&priv->oxcf, priv->cfg, priv->vp8_cfg, mr_cfg);

      priv->cpi = vp8_create_compressor(&priv->oxcf);

      if (!priv->cpi) {

#if CONFIG_MULTI_RES_ENCODING

        // Release ownership of mr_cfg->mr_low_res_mode_info on failure. This

        // prevents ownership confusion with the caller and avoids a double

        // free when vpx_codec_destroy() is called on this instance.

        priv->oxcf.mr_total_resolutions = 0;

        priv->oxcf.mr_encoder_id = 0;

        priv->oxcf.mr_low_res_mode_info = NULL;

#endif

        res = VPX_CODEC_MEM_ERROR;

      }

    }

  }

  return res;

}

static vpx_codec_err_t vp8e_destroy(vpx_codec_alg_priv_t *ctx) {

#if CONFIG_MULTI_RES_ENCODING

  /* Free multi-encoder shared memory */

  if (ctx->oxcf.mr_total_resolutions > 0 &&

      (ctx->oxcf.mr_encoder_id == ctx->oxcf.mr_total_resolutions - 1)) {

    vp8e_mr_free_mem(ctx->oxcf.mr_low_res_mode_info);

  }

#endif

  free(ctx->cx_data);

  vp8_remove_compressor(&ctx->cpi);

  vpx_free(ctx);

  return VPX_CODEC_OK;

}

static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img,

                                       YV12_BUFFER_CONFIG *yv12) {

  const int y_w = img->d_w;

  const int y_h = img->d_h;

  const int uv_w = (img->d_w + 1) / 2;

  const int uv_h = (img->d_h + 1) / 2;

  vpx_codec_err_t res = VPX_CODEC_OK;

  yv12->y_buffer = img->planes[VPX_PLANE_Y];

  yv12->u_buffer = img->planes[VPX_PLANE_U];

  yv12->v_buffer = img->planes[VPX_PLANE_V];

  // TODO(issue 520751602): this should use img->w/h to set y_width/y_height

  // and that should be used to calculate uv_width/height after the code is

  // updated to correctly use uv_crop_width/height to avoid using uninitialized

  // data from the border.

  yv12->y_crop_width = y_w;

  yv12->y_crop_height = y_h;

  yv12->y_width = y_w;

  yv12->y_height = y_h;

  yv12->uv_crop_width = uv_w;

  yv12->uv_crop_height = uv_h;

  yv12->uv_width = uv_w;

  yv12->uv_height = uv_h;

  yv12->y_stride = img->stride[VPX_PLANE_Y];

  assert(img->stride[VPX_PLANE_U] == img->stride[VPX_PLANE_V]);

  yv12->uv_stride = img->stride[VPX_PLANE_U];

  yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2;

  return res;

}

static vpx_codec_err_t pick_quickcompress_mode(vpx_codec_alg_priv_t *ctx,

                                               unsigned long duration,

                                               vpx_enc_deadline_t deadline) {

  int new_qc;

#if !(CONFIG_REALTIME_ONLY)

  /* Use best quality mode if no deadline is given. */

  new_qc = MODE_BESTQUALITY;

  if (deadline) {

    /* Convert duration parameter from stream timebase to microseconds */

    VPX_STATIC_ASSERT(TICKS_PER_SEC > 1000000 &&

                      (TICKS_PER_SEC % 1000000) == 0);

    if (duration > UINT64_MAX / (uint64_t)ctx->timestamp_ratio.num) {

      ERROR("duration is too big");

    }

    uint64_t duration_us =

        duration * (uint64_t)ctx->timestamp_ratio.num /

        ((uint64_t)ctx->timestamp_ratio.den * (TICKS_PER_SEC / 1000000));

    /* If the deadline is more that the duration this frame is to be shown,

     * use good quality mode. Otherwise use realtime mode.

     */

    new_qc = (deadline > duration_us) ? MODE_GOODQUALITY : MODE_REALTIME;

  }

#else

  (void)duration;

  new_qc = MODE_REALTIME;

#endif

  if (deadline == VPX_DL_REALTIME) {

    new_qc = MODE_REALTIME;

  } else if (ctx->cfg.g_pass == VPX_RC_FIRST_PASS) {

    new_qc = MODE_FIRSTPASS;

  } else if (ctx->cfg.g_pass == VPX_RC_LAST_PASS) {

    new_qc =

        (new_qc == MODE_BESTQUALITY) ? MODE_SECONDPASS_BEST : MODE_SECONDPASS;

  }

  if (ctx->oxcf.Mode != new_qc) {

    ctx->oxcf.Mode = new_qc;

    vp8_change_config(ctx->cpi, &ctx->oxcf);

  }

  return VPX_CODEC_OK;

}

static vpx_codec_err_t set_reference_and_update(vpx_codec_alg_priv_t *ctx,

                                                vpx_enc_frame_flags_t flags) {

  /* Handle Flags */

  if (((flags & VP8_EFLAG_NO_UPD_GF) && (flags & VP8_EFLAG_FORCE_GF)) ||

      ((flags & VP8_EFLAG_NO_UPD_ARF) && (flags & VP8_EFLAG_FORCE_ARF))) {

    ctx->base.err_detail = "Conflicting flags.";

    return VPX_CODEC_INVALID_PARAM;

  }

  if (flags &

      (VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF)) {

    int ref = 7;

    if (flags & VP8_EFLAG_NO_REF_LAST) ref ^= VP8_LAST_FRAME;

    if (flags & VP8_EFLAG_NO_REF_GF) ref ^= VP8_GOLD_FRAME;

    if (flags & VP8_EFLAG_NO_REF_ARF) ref ^= VP8_ALTR_FRAME;

    vp8_use_as_reference(ctx->cpi, ref);

  }

  if (flags &

      (VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |

       VP8_EFLAG_FORCE_GF | VP8_EFLAG_FORCE_ARF)) {

    int upd = 7;

    if (flags & VP8_EFLAG_NO_UPD_LAST) upd ^= VP8_LAST_FRAME;

    if (flags & VP8_EFLAG_NO_UPD_GF) upd ^= VP8_GOLD_FRAME;

    if (flags & VP8_EFLAG_NO_UPD_ARF) upd ^= VP8_ALTR_FRAME;

    vp8_update_reference(ctx->cpi, upd);

  }

  if (flags & VP8_EFLAG_NO_UPD_ENTROPY) {

    vp8_update_entropy(ctx->cpi, 0);

  }

  return VPX_CODEC_OK;

}

static vpx_codec_err_t vp8e_encode(vpx_codec_alg_priv_t *ctx,

                                   const vpx_image_t *img, vpx_codec_pts_t pts,

                                   unsigned long duration,

                                   vpx_enc_frame_flags_t enc_flags,

                                   vpx_enc_deadline_t deadline) {

  volatile vpx_codec_err_t res = VPX_CODEC_OK;

  // Make a copy as volatile to avoid -Wclobbered with longjmp.

  volatile vpx_enc_frame_flags_t flags = enc_flags;

  volatile vpx_codec_pts_t pts_val = pts;

  if (!ctx->cfg.rc_target_bitrate) {

#if CONFIG_MULTI_RES_ENCODING

    if (!ctx->cpi) return VPX_CODEC_ERROR;

    if (ctx->cpi->oxcf.mr_total_resolutions > 1) {

      LOWER_RES_FRAME_INFO *low_res_frame_info =

          (LOWER_RES_FRAME_INFO *)ctx->cpi->oxcf.mr_low_res_mode_info;

      if (!low_res_frame_info) return VPX_CODEC_ERROR;

      low_res_frame_info->skip_encoding_prev_stream = 1;

      if (ctx->cpi->oxcf.mr_encoder_id == 0)

        low_res_frame_info->skip_encoding_base_stream = 1;

    }

#endif

    return res;

  }

  if (img) res = validate_img(ctx, img);

  if (!res) res = validate_config(ctx, &ctx->cfg, &ctx->vp8_cfg, 1);

  if (!res) res = pick_quickcompress_mode(ctx, duration, deadline);

  vpx_codec_pkt_list_init(&ctx->pkt_list);

  // If no flags are set in the encode call, then use the frame flags as

  // defined via the control function: vp8e_set_frame_flags.

  if (!flags) {

    flags = ctx->control_frame_flags;

  }

  ctx->control_frame_flags = 0;

  if (!res) res = set_reference_and_update(ctx, flags);

  /* Handle fixed keyframe intervals */

  if (ctx->cfg.kf_mode == VPX_KF_AUTO &&

      ctx->cfg.kf_min_dist == ctx->cfg.kf_max_dist) {

    if (++ctx->fixed_kf_cntr > ctx->cfg.kf_min_dist) {

      flags |= VPX_EFLAG_FORCE_KF;

      ctx->fixed_kf_cntr = 1;

    }

  }

  /* Initialize the encoder instance on the first frame */

  if (!res && ctx->cpi) {

    unsigned int lib_flags;

    int64_t dst_time_stamp, dst_end_time_stamp;

    size_t size, cx_data_sz;

    unsigned char *cx_data;

    unsigned char *cx_data_end;

    int comp_data_state = 0;

    if (setjmp(ctx->cpi->common.error.jmp)) {

      ctx->cpi->common.error.setjmp = 0;

      res = update_error_state(ctx, &ctx->cpi->common.error);

      vpx_clear_system_state();

      return res;

    }

    ctx->cpi->common.error.setjmp = 1;

    // Per-frame PSNR is not supported when g_lag_in_frames is greater than 0.

    if ((flags & VPX_EFLAG_CALCULATE_PSNR) && ctx->cfg.g_lag_in_frames != 0) {

      vpx_internal_error(

          &ctx->cpi->common.error, VPX_CODEC_INCAPABLE,

          "Cannot calculate per-frame PSNR when g_lag_in_frames is nonzero");

    }

    /* Set up internal flags */