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      1 /*
      2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 
     12 #include "vpx/vpx_codec.h"
     13 #include "vpx/internal/vpx_codec_internal.h"
     14 #include "vpx_version.h"
     15 #include "vp8/encoder/onyx_int.h"
     16 #include "vpx/vp8e.h"
     17 #include "vp8/encoder/firstpass.h"
     18 #include "vp8/common/onyx.h"
     19 #include <stdlib.h>
     20 #include <string.h>
     21 
     22 /* This value is a sentinel for determining whether the user has set a mode
     23  * directly through the deprecated VP8E_SET_ENCODING_MODE control.
     24  */
     25 #define NO_MODE_SET 255
     26 
     27 struct vp8_extracfg
     28 {
     29     struct vpx_codec_pkt_list *pkt_list;
     30     vp8e_encoding_mode      encoding_mode;               /** best, good, realtime            */
     31     int                         cpu_used;                    /** available cpu percentage in 1/16*/
     32     unsigned int                enable_auto_alt_ref;           /** if encoder decides to uses alternate reference frame */
     33     unsigned int                noise_sensitivity;
     34     unsigned int                Sharpness;
     35     unsigned int                static_thresh;
     36     unsigned int                token_partitions;
     37     unsigned int                arnr_max_frames;    /* alt_ref Noise Reduction Max Frame Count */
     38     unsigned int                arnr_strength;    /* alt_ref Noise Reduction Strength */
     39     unsigned int                arnr_type;        /* alt_ref filter type */
     40     vp8e_tuning                 tuning;
     41     unsigned int                cq_level;         /* constrained quality level */
     42 
     43 };
     44 
     45 struct extraconfig_map
     46 {
     47     int                 usage;
     48     struct vp8_extracfg cfg;
     49 };
     50 
     51 static const struct extraconfig_map extracfg_map[] =
     52 {
     53     {
     54         0,
     55         {
     56             NULL,
     57 #if !(CONFIG_REALTIME_ONLY)
     58             VP8_BEST_QUALITY_ENCODING,  /* Encoding Mode */
     59             0,                          /* cpu_used      */
     60 #else
     61             VP8_REAL_TIME_ENCODING,     /* Encoding Mode */
     62             4,                          /* cpu_used      */
     63 #endif
     64             0,                          /* enable_auto_alt_ref */
     65             0,                          /* noise_sensitivity */
     66             0,                          /* Sharpness */
     67             0,                          /* static_thresh */
     68             VP8_ONE_TOKENPARTITION,     /* token_partitions */
     69             0,                          /* arnr_max_frames */
     70             3,                          /* arnr_strength */
     71             3,                          /* arnr_type*/
     72             0,                          /* tuning*/
     73             10,                         /* cq_level */
     74         }
     75     }
     76 };
     77 
     78 struct vpx_codec_alg_priv
     79 {
     80     vpx_codec_priv_t        base;
     81     vpx_codec_enc_cfg_t     cfg;
     82     struct vp8_extracfg     vp8_cfg;
     83     VP8_CONFIG              oxcf;
     84     VP8_PTR             cpi;
     85     unsigned char          *cx_data;
     86     unsigned int            cx_data_sz;
     87     vpx_image_t             preview_img;
     88     unsigned int            next_frame_flag;
     89     vp8_postproc_cfg_t      preview_ppcfg;
     90     vpx_codec_pkt_list_decl(64) pkt_list;              // changed to accomendate the maximum number of lagged frames allowed
     91     int                         deprecated_mode;
     92     unsigned int                fixed_kf_cntr;
     93 };
     94 
     95 
     96 static vpx_codec_err_t
     97 update_error_state(vpx_codec_alg_priv_t                 *ctx,
     98                    const struct vpx_internal_error_info *error)
     99 {
    100     vpx_codec_err_t res;
    101 
    102     if ((res = error->error_code))
    103         ctx->base.err_detail = error->has_detail
    104                                ? error->detail
    105                                : NULL;
    106 
    107     return res;
    108 }
    109 
    110 
    111 #undef ERROR
    112 #define ERROR(str) do {\
    113         ctx->base.err_detail = str;\
    114         return VPX_CODEC_INVALID_PARAM;\
    115     } while(0)
    116 
    117 #define RANGE_CHECK(p,memb,lo,hi) do {\
    118         if(!(((p)->memb == lo || (p)->memb > (lo)) && (p)->memb <= hi)) \
    119             ERROR(#memb " out of range ["#lo".."#hi"]");\
    120     } while(0)
    121 
    122 #define RANGE_CHECK_HI(p,memb,hi) do {\
    123         if(!((p)->memb <= (hi))) \
    124             ERROR(#memb " out of range [.."#hi"]");\
    125     } while(0)
    126 
    127 #define RANGE_CHECK_LO(p,memb,lo) do {\
    128         if(!((p)->memb >= (lo))) \
    129             ERROR(#memb " out of range ["#lo"..]");\
    130     } while(0)
    131 
    132 #define RANGE_CHECK_BOOL(p,memb) do {\
    133         if(!!((p)->memb) != (p)->memb) ERROR(#memb " expected boolean");\
    134     } while(0)
    135 
    136 static vpx_codec_err_t validate_config(vpx_codec_alg_priv_t      *ctx,
    137                                        const vpx_codec_enc_cfg_t *cfg,
    138                                        const struct vp8_extracfg *vp8_cfg)
    139 {
    140     RANGE_CHECK(cfg, g_w,                   1, 16384);
    141     RANGE_CHECK(cfg, g_h,                   1, 16384);
    142     RANGE_CHECK(cfg, g_timebase.den,        1, 1000000000);
    143     RANGE_CHECK(cfg, g_timebase.num,        1, cfg->g_timebase.den);
    144     RANGE_CHECK_HI(cfg, g_profile,          3);
    145     RANGE_CHECK_HI(cfg, rc_max_quantizer,   63);
    146     RANGE_CHECK_HI(cfg, rc_min_quantizer,   cfg->rc_max_quantizer);
    147     RANGE_CHECK_HI(cfg, g_threads,          64);
    148 #if !(CONFIG_REALTIME_ONLY)
    149     RANGE_CHECK_HI(cfg, g_lag_in_frames,    25);
    150 #else
    151     RANGE_CHECK_HI(cfg, g_lag_in_frames,    0);
    152 #endif
    153     RANGE_CHECK(cfg, rc_end_usage,          VPX_VBR, VPX_CQ);
    154     RANGE_CHECK_HI(cfg, rc_undershoot_pct,  100);
    155     RANGE_CHECK_HI(cfg, rc_2pass_vbr_bias_pct, 100);
    156     RANGE_CHECK(cfg, kf_mode,               VPX_KF_DISABLED, VPX_KF_AUTO);
    157     //RANGE_CHECK_BOOL(cfg,                 g_delete_firstpassfile);
    158     RANGE_CHECK_BOOL(cfg,                   rc_resize_allowed);
    159     RANGE_CHECK_HI(cfg, rc_dropframe_thresh,   100);
    160     RANGE_CHECK_HI(cfg, rc_resize_up_thresh,   100);
    161     RANGE_CHECK_HI(cfg, rc_resize_down_thresh, 100);
    162 #if !(CONFIG_REALTIME_ONLY)
    163     RANGE_CHECK(cfg,        g_pass,         VPX_RC_ONE_PASS, VPX_RC_LAST_PASS);
    164 #else
    165     RANGE_CHECK(cfg,        g_pass,         VPX_RC_ONE_PASS, VPX_RC_ONE_PASS);
    166 #endif
    167 
    168     /* VP8 does not support a lower bound on the keyframe interval in
    169      * automatic keyframe placement mode.
    170      */
    171     if (cfg->kf_mode != VPX_KF_DISABLED && cfg->kf_min_dist != cfg->kf_max_dist
    172         && cfg->kf_min_dist > 0)
    173         ERROR("kf_min_dist not supported in auto mode, use 0 "
    174               "or kf_max_dist instead.");
    175 
    176     RANGE_CHECK_BOOL(vp8_cfg,               enable_auto_alt_ref);
    177 #if !(CONFIG_REALTIME_ONLY)
    178     RANGE_CHECK(vp8_cfg, encoding_mode,      VP8_BEST_QUALITY_ENCODING, VP8_REAL_TIME_ENCODING);
    179     RANGE_CHECK(vp8_cfg, cpu_used,           -16, 16);
    180     RANGE_CHECK_HI(vp8_cfg, noise_sensitivity,  6);
    181 #else
    182     RANGE_CHECK(vp8_cfg, encoding_mode,      VP8_REAL_TIME_ENCODING, VP8_REAL_TIME_ENCODING);
    183 
    184     if (!((vp8_cfg->cpu_used >= -16 && vp8_cfg->cpu_used <= -4) || (vp8_cfg->cpu_used >= 4 && vp8_cfg->cpu_used <= 16)))
    185         ERROR("cpu_used out of range [-16..-4] or [4..16]");
    186 
    187     RANGE_CHECK(vp8_cfg, noise_sensitivity,  0, 0);
    188 #endif
    189 
    190     RANGE_CHECK(vp8_cfg, token_partitions,   VP8_ONE_TOKENPARTITION, VP8_EIGHT_TOKENPARTITION);
    191     RANGE_CHECK_HI(vp8_cfg, Sharpness,       7);
    192     RANGE_CHECK(vp8_cfg, arnr_max_frames, 0, 15);
    193     RANGE_CHECK_HI(vp8_cfg, arnr_strength,   6);
    194     RANGE_CHECK(vp8_cfg, arnr_type,       1, 3);
    195     RANGE_CHECK(vp8_cfg, cq_level, 0, 63);
    196 
    197 #if !(CONFIG_REALTIME_ONLY)
    198     if (cfg->g_pass == VPX_RC_LAST_PASS)
    199     {
    200         int              mb_r = (cfg->g_h + 15) / 16;
    201         int              mb_c = (cfg->g_w + 15) / 16;
    202         size_t           packet_sz = sizeof(FIRSTPASS_STATS);
    203         int              n_packets = cfg->rc_twopass_stats_in.sz / packet_sz;
    204         FIRSTPASS_STATS *stats;
    205 
    206         if (!cfg->rc_twopass_stats_in.buf)
    207             ERROR("rc_twopass_stats_in.buf not set.");
    208 
    209         if (cfg->rc_twopass_stats_in.sz % packet_sz)
    210             ERROR("rc_twopass_stats_in.sz indicates truncated packet.");
    211 
    212         if (cfg->rc_twopass_stats_in.sz < 2 * packet_sz)
    213             ERROR("rc_twopass_stats_in requires at least two packets.");
    214 
    215         stats = (void*)((char *)cfg->rc_twopass_stats_in.buf
    216                 + (n_packets - 1) * packet_sz);
    217 
    218         if ((int)(stats->count + 0.5) != n_packets - 1)
    219             ERROR("rc_twopass_stats_in missing EOS stats packet");
    220     }
    221 #endif
    222 
    223     return VPX_CODEC_OK;
    224 }
    225 
    226 
    227 static vpx_codec_err_t validate_img(vpx_codec_alg_priv_t *ctx,
    228                                     const vpx_image_t    *img)
    229 {
    230     switch (img->fmt)
    231     {
    232     case VPX_IMG_FMT_YV12:
    233     case VPX_IMG_FMT_I420:
    234     case VPX_IMG_FMT_VPXI420:
    235     case VPX_IMG_FMT_VPXYV12:
    236         break;
    237     default:
    238         ERROR("Invalid image format. Only YV12 and I420 images are supported");
    239     }
    240 
    241     if ((img->d_w != ctx->cfg.g_w) || (img->d_h != ctx->cfg.g_h))
    242         ERROR("Image size must match encoder init configuration size");
    243 
    244     return VPX_CODEC_OK;
    245 }
    246 
    247 
    248 static vpx_codec_err_t set_vp8e_config(VP8_CONFIG *oxcf,
    249                                        vpx_codec_enc_cfg_t cfg,
    250                                        struct vp8_extracfg vp8_cfg)
    251 {
    252     oxcf->multi_threaded         = cfg.g_threads;
    253     oxcf->Version               = cfg.g_profile;
    254 
    255     oxcf->Width                 = cfg.g_w;
    256     oxcf->Height                = cfg.g_h;
    257     /* guess a frame rate if out of whack, use 30 */
    258     oxcf->frame_rate             = (double)(cfg.g_timebase.den) / (double)(cfg.g_timebase.num);
    259 
    260     if (oxcf->frame_rate > 180)
    261     {
    262         oxcf->frame_rate = 30;
    263     }
    264 
    265     oxcf->error_resilient_mode    = cfg.g_error_resilient;
    266 
    267     switch (cfg.g_pass)
    268     {
    269     case VPX_RC_ONE_PASS:
    270         oxcf->Mode = MODE_BESTQUALITY;
    271         break;
    272     case VPX_RC_FIRST_PASS:
    273         oxcf->Mode = MODE_FIRSTPASS;
    274         break;
    275     case VPX_RC_LAST_PASS:
    276         oxcf->Mode = MODE_SECONDPASS_BEST;
    277         break;
    278     }
    279 
    280     if (cfg.g_pass == VPX_RC_FIRST_PASS)
    281     {
    282         oxcf->allow_lag              = 0;
    283         oxcf->lag_in_frames           = 0;
    284     }
    285     else
    286     {
    287         oxcf->allow_lag              = (cfg.g_lag_in_frames) > 0;
    288         oxcf->lag_in_frames           = cfg.g_lag_in_frames;
    289     }
    290 
    291     oxcf->allow_df               = (cfg.rc_dropframe_thresh > 0);
    292     oxcf->drop_frames_water_mark   = cfg.rc_dropframe_thresh;
    293 
    294     oxcf->allow_spatial_resampling = cfg.rc_resize_allowed;
    295     oxcf->resample_up_water_mark   = cfg.rc_resize_up_thresh;
    296     oxcf->resample_down_water_mark = cfg.rc_resize_down_thresh;
    297 
    298     if (cfg.rc_end_usage == VPX_VBR)
    299     {
    300         oxcf->end_usage          = USAGE_LOCAL_FILE_PLAYBACK;
    301     }
    302     else if (cfg.rc_end_usage == VPX_CBR)
    303     {
    304         oxcf->end_usage          = USAGE_STREAM_FROM_SERVER;
    305     }
    306     else if (cfg.rc_end_usage == VPX_CQ)
    307     {
    308         oxcf->end_usage          = USAGE_CONSTRAINED_QUALITY;
    309     }
    310 
    311     oxcf->target_bandwidth       = cfg.rc_target_bitrate;
    312 
    313     oxcf->best_allowed_q          = cfg.rc_min_quantizer;
    314     oxcf->worst_allowed_q         = cfg.rc_max_quantizer;
    315     oxcf->cq_level                = vp8_cfg.cq_level;
    316     oxcf->fixed_q = -1;
    317 
    318     oxcf->under_shoot_pct         = cfg.rc_undershoot_pct;
    319     //oxcf->over_shoot_pct        = cfg.rc_overshoot_pct;
    320 
    321     oxcf->maximum_buffer_size     = cfg.rc_buf_sz;
    322     oxcf->starting_buffer_level   = cfg.rc_buf_initial_sz;
    323     oxcf->optimal_buffer_level    = cfg.rc_buf_optimal_sz;
    324 
    325     oxcf->two_pass_vbrbias        = cfg.rc_2pass_vbr_bias_pct;
    326     oxcf->two_pass_vbrmin_section  = cfg.rc_2pass_vbr_minsection_pct;
    327     oxcf->two_pass_vbrmax_section  = cfg.rc_2pass_vbr_maxsection_pct;
    328 
    329     oxcf->auto_key               = cfg.kf_mode == VPX_KF_AUTO
    330                                    && cfg.kf_min_dist != cfg.kf_max_dist;
    331     //oxcf->kf_min_dist         = cfg.kf_min_dis;
    332     oxcf->key_freq               = cfg.kf_max_dist;
    333 
    334     //oxcf->delete_first_pass_file = cfg.g_delete_firstpassfile;
    335     //strcpy(oxcf->first_pass_file, cfg.g_firstpass_file);
    336 
    337     oxcf->cpu_used               =  vp8_cfg.cpu_used;
    338     oxcf->encode_breakout        =  vp8_cfg.static_thresh;
    339     oxcf->play_alternate         =  vp8_cfg.enable_auto_alt_ref;
    340     oxcf->noise_sensitivity      =  vp8_cfg.noise_sensitivity;
    341     oxcf->Sharpness             =  vp8_cfg.Sharpness;
    342     oxcf->token_partitions       =  vp8_cfg.token_partitions;
    343 
    344     oxcf->two_pass_stats_in        =  cfg.rc_twopass_stats_in;
    345     oxcf->output_pkt_list         =  vp8_cfg.pkt_list;
    346 
    347     oxcf->arnr_max_frames = vp8_cfg.arnr_max_frames;
    348     oxcf->arnr_strength =  vp8_cfg.arnr_strength;
    349     oxcf->arnr_type =      vp8_cfg.arnr_type;
    350 
    351     oxcf->tuning = vp8_cfg.tuning;
    352 
    353     /*
    354         printf("Current VP8 Settings: \n");
    355         printf("target_bandwidth: %d\n", oxcf->target_bandwidth);
    356         printf("noise_sensitivity: %d\n", oxcf->noise_sensitivity);
    357         printf("Sharpness: %d\n",    oxcf->Sharpness);
    358         printf("cpu_used: %d\n",  oxcf->cpu_used);
    359         printf("Mode: %d\n",     oxcf->Mode);
    360         printf("delete_first_pass_file: %d\n",  oxcf->delete_first_pass_file);
    361         printf("auto_key: %d\n",  oxcf->auto_key);
    362         printf("key_freq: %d\n", oxcf->key_freq);
    363         printf("end_usage: %d\n", oxcf->end_usage);
    364         printf("under_shoot_pct: %d\n", oxcf->under_shoot_pct);
    365         printf("starting_buffer_level: %d\n", oxcf->starting_buffer_level);
    366         printf("optimal_buffer_level: %d\n",  oxcf->optimal_buffer_level);
    367         printf("maximum_buffer_size: %d\n", oxcf->maximum_buffer_size);
    368         printf("fixed_q: %d\n",  oxcf->fixed_q);
    369         printf("worst_allowed_q: %d\n", oxcf->worst_allowed_q);
    370         printf("best_allowed_q: %d\n", oxcf->best_allowed_q);
    371         printf("allow_spatial_resampling: %d\n",  oxcf->allow_spatial_resampling);
    372         printf("resample_down_water_mark: %d\n", oxcf->resample_down_water_mark);
    373         printf("resample_up_water_mark: %d\n", oxcf->resample_up_water_mark);
    374         printf("allow_df: %d\n", oxcf->allow_df);
    375         printf("drop_frames_water_mark: %d\n", oxcf->drop_frames_water_mark);
    376         printf("two_pass_vbrbias: %d\n",  oxcf->two_pass_vbrbias);
    377         printf("two_pass_vbrmin_section: %d\n", oxcf->two_pass_vbrmin_section);
    378         printf("two_pass_vbrmax_section: %d\n", oxcf->two_pass_vbrmax_section);
    379         printf("allow_lag: %d\n", oxcf->allow_lag);
    380         printf("lag_in_frames: %d\n", oxcf->lag_in_frames);
    381         printf("play_alternate: %d\n", oxcf->play_alternate);
    382         printf("Version: %d\n", oxcf->Version);
    383         printf("multi_threaded: %d\n",   oxcf->multi_threaded);
    384         printf("encode_breakout: %d\n", oxcf->encode_breakout);
    385     */
    386     return VPX_CODEC_OK;
    387 }
    388 
    389 static vpx_codec_err_t vp8e_set_config(vpx_codec_alg_priv_t       *ctx,
    390                                        const vpx_codec_enc_cfg_t  *cfg)
    391 {
    392     vpx_codec_err_t res;
    393 
    394     if ((cfg->g_w != ctx->cfg.g_w) || (cfg->g_h != ctx->cfg.g_h))
    395         ERROR("Cannot change width or height after initialization");
    396 
    397     /* Prevent increasing lag_in_frames. This check is stricter than it needs
    398      * to be -- the limit is not increasing past the first lag_in_frames
    399      * value, but we don't track the initial config, only the last successful
    400      * config.
    401      */
    402     if ((cfg->g_lag_in_frames > ctx->cfg.g_lag_in_frames))
    403         ERROR("Cannot increase lag_in_frames");
    404 
    405     res = validate_config(ctx, cfg, &ctx->vp8_cfg);
    406 
    407     if (!res)
    408     {
    409         ctx->cfg = *cfg;
    410         set_vp8e_config(&ctx->oxcf, ctx->cfg, ctx->vp8_cfg);
    411         vp8_change_config(ctx->cpi, &ctx->oxcf);
    412     }
    413 
    414     return res;
    415 }
    416 
    417 
    418 int vp8_reverse_trans(int);
    419 
    420 
    421 static vpx_codec_err_t get_param(vpx_codec_alg_priv_t *ctx,
    422                                  int                   ctrl_id,
    423                                  va_list               args)
    424 {
    425     void *arg = va_arg(args, void *);
    426 
    427 #define MAP(id, var) case id: *(RECAST(id, arg)) = var; break
    428 
    429     if (!arg)
    430         return VPX_CODEC_INVALID_PARAM;
    431 
    432     switch (ctrl_id)
    433     {
    434         MAP(VP8E_GET_LAST_QUANTIZER, vp8_get_quantizer(ctx->cpi));
    435         MAP(VP8E_GET_LAST_QUANTIZER_64, vp8_reverse_trans(vp8_get_quantizer(ctx->cpi)));
    436     }
    437 
    438     return VPX_CODEC_OK;
    439 #undef MAP
    440 }
    441 
    442 
    443 static vpx_codec_err_t set_param(vpx_codec_alg_priv_t *ctx,
    444                                  int                   ctrl_id,
    445                                  va_list               args)
    446 {
    447     vpx_codec_err_t     res  = VPX_CODEC_OK;
    448     struct vp8_extracfg xcfg = ctx->vp8_cfg;
    449 
    450 #define MAP(id, var) case id: var = CAST(id, args); break;
    451 
    452     switch (ctrl_id)
    453     {
    454         MAP(VP8E_SET_ENCODING_MODE,         ctx->deprecated_mode);
    455         MAP(VP8E_SET_CPUUSED,               xcfg.cpu_used);
    456         MAP(VP8E_SET_ENABLEAUTOALTREF,      xcfg.enable_auto_alt_ref);
    457         MAP(VP8E_SET_NOISE_SENSITIVITY,     xcfg.noise_sensitivity);
    458         MAP(VP8E_SET_SHARPNESS,             xcfg.Sharpness);
    459         MAP(VP8E_SET_STATIC_THRESHOLD,      xcfg.static_thresh);
    460         MAP(VP8E_SET_TOKEN_PARTITIONS,      xcfg.token_partitions);
    461 
    462         MAP(VP8E_SET_ARNR_MAXFRAMES,        xcfg.arnr_max_frames);
    463         MAP(VP8E_SET_ARNR_STRENGTH ,        xcfg.arnr_strength);
    464         MAP(VP8E_SET_ARNR_TYPE     ,        xcfg.arnr_type);
    465         MAP(VP8E_SET_TUNING,                xcfg.tuning);
    466         MAP(VP8E_SET_CQ_LEVEL,              xcfg.cq_level);
    467 
    468     }
    469 
    470     res = validate_config(ctx, &ctx->cfg, &xcfg);
    471 
    472     if (!res)
    473     {
    474         ctx->vp8_cfg = xcfg;
    475         set_vp8e_config(&ctx->oxcf, ctx->cfg, ctx->vp8_cfg);
    476         vp8_change_config(ctx->cpi, &ctx->oxcf);
    477     }
    478 
    479     return res;
    480 #undef MAP
    481 }
    482 static vpx_codec_err_t vp8e_init(vpx_codec_ctx_t *ctx)
    483 {
    484     vpx_codec_err_t        res = VPX_DEC_OK;
    485     struct vpx_codec_alg_priv *priv;
    486     vpx_codec_enc_cfg_t       *cfg;
    487     unsigned int               i;
    488 
    489     VP8_PTR optr;
    490 
    491     if (!ctx->priv)
    492     {
    493         priv = calloc(1, sizeof(struct vpx_codec_alg_priv));
    494 
    495         if (!priv)
    496         {
    497             return VPX_CODEC_MEM_ERROR;
    498         }
    499 
    500         ctx->priv = &priv->base;
    501         ctx->priv->sz = sizeof(*ctx->priv);
    502         ctx->priv->iface = ctx->iface;
    503         ctx->priv->alg_priv = priv;
    504         ctx->priv->init_flags = ctx->init_flags;
    505 
    506         if (ctx->config.enc)
    507         {
    508             /* Update the reference to the config structure to an
    509              * internal copy.
    510              */
    511             ctx->priv->alg_priv->cfg = *ctx->config.enc;
    512             ctx->config.enc = &ctx->priv->alg_priv->cfg;
    513         }
    514 
    515         cfg =  &ctx->priv->alg_priv->cfg;
    516 
    517         /* Select the extra vp6 configuration table based on the current
    518          * usage value. If the current usage value isn't found, use the
    519          * values for usage case 0.
    520          */
    521         for (i = 0;
    522              extracfg_map[i].usage && extracfg_map[i].usage != cfg->g_usage;
    523              i++);
    524 
    525         priv->vp8_cfg = extracfg_map[i].cfg;
    526         priv->vp8_cfg.pkt_list = &priv->pkt_list.head;
    527 
    528         priv->cx_data_sz = priv->cfg.g_w * priv->cfg.g_h * 3 / 2 * 2;
    529 
    530         if (priv->cx_data_sz < 4096) priv->cx_data_sz = 4096;
    531 
    532         priv->cx_data = malloc(priv->cx_data_sz);
    533 
    534         if (!priv->cx_data)
    535         {
    536             return VPX_CODEC_MEM_ERROR;
    537         }
    538 
    539         priv->deprecated_mode = NO_MODE_SET;
    540 
    541         vp8_initialize();
    542 
    543         res = validate_config(priv, &priv->cfg, &priv->vp8_cfg);
    544 
    545         if (!res)
    546         {
    547             set_vp8e_config(&ctx->priv->alg_priv->oxcf,
    548                              ctx->priv->alg_priv->cfg,
    549                              ctx->priv->alg_priv->vp8_cfg);
    550             optr = vp8_create_compressor(&ctx->priv->alg_priv->oxcf);
    551 
    552             if (!optr)
    553                 res = VPX_CODEC_MEM_ERROR;
    554             else
    555                 ctx->priv->alg_priv->cpi = optr;
    556         }
    557     }
    558 
    559     return res;
    560 }
    561 
    562 static vpx_codec_err_t vp8e_destroy(vpx_codec_alg_priv_t *ctx)
    563 {
    564 
    565     free(ctx->cx_data);
    566     vp8_remove_compressor(&ctx->cpi);
    567     free(ctx);
    568     return VPX_CODEC_OK;
    569 }
    570 
    571 static vpx_codec_err_t image2yuvconfig(const vpx_image_t   *img,
    572                                        YV12_BUFFER_CONFIG  *yv12)
    573 {
    574     vpx_codec_err_t        res = VPX_CODEC_OK;
    575     yv12->y_buffer = img->planes[VPX_PLANE_Y];
    576     yv12->u_buffer = img->planes[VPX_PLANE_U];
    577     yv12->v_buffer = img->planes[VPX_PLANE_V];
    578 
    579     yv12->y_width  = img->d_w;
    580     yv12->y_height = img->d_h;
    581     yv12->uv_width = (1 + yv12->y_width) / 2;
    582     yv12->uv_height = (1 + yv12->y_height) / 2;
    583 
    584     yv12->y_stride = img->stride[VPX_PLANE_Y];
    585     yv12->uv_stride = img->stride[VPX_PLANE_U];
    586 
    587     yv12->border  = (img->stride[VPX_PLANE_Y] - img->w) / 2;
    588     yv12->clrtype = (img->fmt == VPX_IMG_FMT_VPXI420 || img->fmt == VPX_IMG_FMT_VPXYV12); //REG_YUV = 0
    589     return res;
    590 }
    591 
    592 static void pick_quickcompress_mode(vpx_codec_alg_priv_t  *ctx,
    593                                     unsigned long          duration,
    594                                     unsigned long          deadline)
    595 {
    596     unsigned int new_qc;
    597 
    598 #if !(CONFIG_REALTIME_ONLY)
    599     /* Use best quality mode if no deadline is given. */
    600     new_qc = MODE_BESTQUALITY;
    601 
    602     if (deadline)
    603     {
    604         uint64_t     duration_us;
    605 
    606         /* Convert duration parameter from stream timebase to microseconds */
    607         duration_us = (uint64_t)duration * 1000000
    608                       * (uint64_t)ctx->cfg.g_timebase.num
    609                       / (uint64_t)ctx->cfg.g_timebase.den;
    610 
    611         /* If the deadline is more that the duration this frame is to be shown,
    612          * use good quality mode. Otherwise use realtime mode.
    613          */
    614         new_qc = (deadline > duration_us) ? MODE_GOODQUALITY : MODE_REALTIME;
    615     }
    616 
    617 #else
    618     new_qc = MODE_REALTIME;
    619 #endif
    620 
    621     switch (ctx->deprecated_mode)
    622     {
    623     case VP8_BEST_QUALITY_ENCODING:
    624         new_qc = MODE_BESTQUALITY;
    625         break;
    626     case VP8_GOOD_QUALITY_ENCODING:
    627         new_qc = MODE_GOODQUALITY;
    628         break;
    629     case VP8_REAL_TIME_ENCODING:
    630         new_qc = MODE_REALTIME;
    631         break;
    632     }
    633 
    634     if (ctx->cfg.g_pass == VPX_RC_FIRST_PASS)
    635         new_qc = MODE_FIRSTPASS;
    636     else if (ctx->cfg.g_pass == VPX_RC_LAST_PASS)
    637         new_qc = (new_qc == MODE_BESTQUALITY)
    638                  ? MODE_SECONDPASS_BEST
    639                  : MODE_SECONDPASS;
    640 
    641     if (ctx->oxcf.Mode != new_qc)
    642     {
    643         ctx->oxcf.Mode = new_qc;
    644         vp8_change_config(ctx->cpi, &ctx->oxcf);
    645     }
    646 }
    647 
    648 
    649 static vpx_codec_err_t vp8e_encode(vpx_codec_alg_priv_t  *ctx,
    650                                    const vpx_image_t     *img,
    651                                    vpx_codec_pts_t        pts,
    652                                    unsigned long          duration,
    653                                    vpx_enc_frame_flags_t  flags,
    654                                    unsigned long          deadline)
    655 {
    656     vpx_codec_err_t res = VPX_CODEC_OK;
    657 
    658     if (img)
    659         res = validate_img(ctx, img);
    660 
    661     pick_quickcompress_mode(ctx, duration, deadline);
    662     vpx_codec_pkt_list_init(&ctx->pkt_list);
    663 
    664     /* Handle Flags */
    665     if (((flags & VP8_EFLAG_NO_UPD_GF) && (flags & VP8_EFLAG_FORCE_GF))
    666         || ((flags & VP8_EFLAG_NO_UPD_ARF) && (flags & VP8_EFLAG_FORCE_ARF)))
    667     {
    668         ctx->base.err_detail = "Conflicting flags.";
    669         return VPX_CODEC_INVALID_PARAM;
    670     }
    671 
    672     if (flags & (VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF
    673                  | VP8_EFLAG_NO_REF_ARF))
    674     {
    675         int ref = 7;
    676 
    677         if (flags & VP8_EFLAG_NO_REF_LAST)
    678             ref ^= VP8_LAST_FLAG;
    679 
    680         if (flags & VP8_EFLAG_NO_REF_GF)
    681             ref ^= VP8_GOLD_FLAG;
    682 
    683         if (flags & VP8_EFLAG_NO_REF_ARF)
    684             ref ^= VP8_ALT_FLAG;
    685 
    686         vp8_use_as_reference(ctx->cpi, ref);
    687     }
    688 
    689     if (flags & (VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF
    690                  | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_FORCE_GF
    691                  | VP8_EFLAG_FORCE_ARF))
    692     {
    693         int upd = 7;
    694 
    695         if (flags & VP8_EFLAG_NO_UPD_LAST)
    696             upd ^= VP8_LAST_FLAG;
    697 
    698         if (flags & VP8_EFLAG_NO_UPD_GF)
    699             upd ^= VP8_GOLD_FLAG;
    700 
    701         if (flags & VP8_EFLAG_NO_UPD_ARF)
    702             upd ^= VP8_ALT_FLAG;
    703 
    704         vp8_update_reference(ctx->cpi, upd);
    705     }
    706 
    707     if (flags & VP8_EFLAG_NO_UPD_ENTROPY)
    708     {
    709         vp8_update_entropy(ctx->cpi, 0);
    710     }
    711 
    712     /* Handle fixed keyframe intervals */
    713     if (ctx->cfg.kf_mode == VPX_KF_AUTO
    714         && ctx->cfg.kf_min_dist == ctx->cfg.kf_max_dist)
    715     {
    716         if (++ctx->fixed_kf_cntr > ctx->cfg.kf_min_dist)
    717         {
    718             flags |= VPX_EFLAG_FORCE_KF;
    719             ctx->fixed_kf_cntr = 1;
    720         }
    721     }
    722 
    723     /* Initialize the encoder instance on the first frame*/
    724     if (!res && ctx->cpi)
    725     {
    726         unsigned int lib_flags;
    727         YV12_BUFFER_CONFIG sd;
    728         INT64 dst_time_stamp, dst_end_time_stamp;
    729         unsigned long size, cx_data_sz;
    730         unsigned char *cx_data;
    731 
    732         /* Set up internal flags */
    733         if (ctx->base.init_flags & VPX_CODEC_USE_PSNR)
    734             ((VP8_COMP *)ctx->cpi)->b_calculate_psnr = 1;
    735 
    736         /* Convert API flags to internal codec lib flags */
    737         lib_flags = (flags & VPX_EFLAG_FORCE_KF) ? FRAMEFLAGS_KEY : 0;
    738 
    739         /* vp8 use 10,000,000 ticks/second as time stamp */
    740         dst_time_stamp    = pts * 10000000 * ctx->cfg.g_timebase.num / ctx->cfg.g_timebase.den;
    741         dst_end_time_stamp = (pts + duration) * 10000000 * ctx->cfg.g_timebase.num / ctx->cfg.g_timebase.den;
    742 
    743         if (img != NULL)
    744         {
    745             res = image2yuvconfig(img, &sd);
    746 
    747             if (vp8_receive_raw_frame(ctx->cpi, ctx->next_frame_flag | lib_flags,
    748                                       &sd, dst_time_stamp, dst_end_time_stamp))
    749             {
    750                 VP8_COMP *cpi = (VP8_COMP *)ctx->cpi;
    751                 res = update_error_state(ctx, &cpi->common.error);
    752             }
    753 
    754             /* reset for next frame */
    755             ctx->next_frame_flag = 0;
    756         }
    757 
    758         cx_data = ctx->cx_data;
    759         cx_data_sz = ctx->cx_data_sz;
    760         lib_flags = 0;
    761 
    762         while (cx_data_sz >= ctx->cx_data_sz / 2
    763                && -1 != vp8_get_compressed_data(ctx->cpi, &lib_flags, &size, cx_data, &dst_time_stamp, &dst_end_time_stamp, !img))
    764         {
    765             if (size)
    766             {
    767                 vpx_codec_pts_t    round, delta;
    768                 vpx_codec_cx_pkt_t pkt;
    769                 VP8_COMP *cpi = (VP8_COMP *)ctx->cpi;
    770 
    771                 /* Add the frame packet to the list of returned packets. */
    772                 round = 1000000 * ctx->cfg.g_timebase.num / 2 - 1;
    773                 delta = (dst_end_time_stamp - dst_time_stamp);
    774                 pkt.kind = VPX_CODEC_CX_FRAME_PKT;
    775                 pkt.data.frame.buf = cx_data;
    776                 pkt.data.frame.sz  = size;
    777                 pkt.data.frame.pts =
    778                     (dst_time_stamp * ctx->cfg.g_timebase.den + round)
    779                     / ctx->cfg.g_timebase.num / 10000000;
    780                 pkt.data.frame.duration =
    781                     (delta * ctx->cfg.g_timebase.den + round)
    782                     / ctx->cfg.g_timebase.num / 10000000;
    783                 pkt.data.frame.flags = lib_flags << 16;
    784 
    785                 if (lib_flags & FRAMEFLAGS_KEY)
    786                     pkt.data.frame.flags |= VPX_FRAME_IS_KEY;
    787 
    788                 if (!cpi->common.show_frame)
    789                 {
    790                     pkt.data.frame.flags |= VPX_FRAME_IS_INVISIBLE;
    791 
    792                     // This timestamp should be as close as possible to the
    793                     // prior PTS so that if a decoder uses pts to schedule when
    794                     // to do this, we start right after last frame was decoded.
    795                     // Invisible frames have no duration.
    796                     pkt.data.frame.pts = ((cpi->last_time_stamp_seen
    797                         * ctx->cfg.g_timebase.den + round)
    798                         / ctx->cfg.g_timebase.num / 10000000) + 1;
    799                     pkt.data.frame.duration = 0;
    800                 }
    801 
    802                 vpx_codec_pkt_list_add(&ctx->pkt_list.head, &pkt);
    803 
    804                 //printf("timestamp: %lld, duration: %d\n", pkt->data.frame.pts, pkt->data.frame.duration);
    805                 cx_data += size;
    806                 cx_data_sz -= size;
    807             }
    808         }
    809     }
    810 
    811     return res;
    812 }
    813 
    814 
    815 static const vpx_codec_cx_pkt_t *vp8e_get_cxdata(vpx_codec_alg_priv_t  *ctx,
    816         vpx_codec_iter_t      *iter)
    817 {
    818     return vpx_codec_pkt_list_get(&ctx->pkt_list.head, iter);
    819 }
    820 
    821 static vpx_codec_err_t vp8e_set_reference(vpx_codec_alg_priv_t *ctx,
    822         int ctr_id,
    823         va_list args)
    824 {
    825     vpx_ref_frame_t *data = va_arg(args, vpx_ref_frame_t *);
    826 
    827     if (data)
    828     {
    829         vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
    830         YV12_BUFFER_CONFIG sd;
    831 
    832         image2yuvconfig(&frame->img, &sd);
    833         vp8_set_reference(ctx->cpi, frame->frame_type, &sd);
    834         return VPX_CODEC_OK;
    835     }
    836     else
    837         return VPX_CODEC_INVALID_PARAM;
    838 
    839 }
    840 
    841 static vpx_codec_err_t vp8e_get_reference(vpx_codec_alg_priv_t *ctx,
    842         int ctr_id,
    843         va_list args)
    844 {
    845 
    846     vpx_ref_frame_t *data = va_arg(args, vpx_ref_frame_t *);
    847 
    848     if (data)
    849     {
    850         vpx_ref_frame_t *frame = (vpx_ref_frame_t *)data;
    851         YV12_BUFFER_CONFIG sd;
    852 
    853         image2yuvconfig(&frame->img, &sd);
    854         vp8_get_reference(ctx->cpi, frame->frame_type, &sd);
    855         return VPX_CODEC_OK;
    856     }
    857     else
    858         return VPX_CODEC_INVALID_PARAM;
    859 }
    860 
    861 static vpx_codec_err_t vp8e_set_previewpp(vpx_codec_alg_priv_t *ctx,
    862         int ctr_id,
    863         va_list args)
    864 {
    865 #if CONFIG_POSTPROC
    866     vp8_postproc_cfg_t *data = va_arg(args, vp8_postproc_cfg_t *);
    867     (void)ctr_id;
    868 
    869     if (data)
    870     {
    871         ctx->preview_ppcfg = *((vp8_postproc_cfg_t *)data);
    872         return VPX_CODEC_OK;
    873     }
    874     else
    875         return VPX_CODEC_INVALID_PARAM;
    876 #else
    877     (void)ctx;
    878     (void)ctr_id;
    879     (void)args;
    880     return VPX_CODEC_INCAPABLE;
    881 #endif
    882 }
    883 
    884 
    885 static vpx_image_t *vp8e_get_preview(vpx_codec_alg_priv_t *ctx)
    886 {
    887 
    888     YV12_BUFFER_CONFIG sd;
    889     vp8_ppflags_t flags = {0};
    890 
    891     if (ctx->preview_ppcfg.post_proc_flag)
    892     {
    893         flags.post_proc_flag        = ctx->preview_ppcfg.post_proc_flag;
    894         flags.deblocking_level      = ctx->preview_ppcfg.deblocking_level;
    895         flags.noise_level           = ctx->preview_ppcfg.noise_level;
    896     }
    897 
    898     if (0 == vp8_get_preview_raw_frame(ctx->cpi, &sd, &flags))
    899     {
    900 
    901         /*
    902         vpx_img_wrap(&ctx->preview_img, VPX_IMG_FMT_YV12,
    903             sd.y_width + 2*VP8BORDERINPIXELS,
    904             sd.y_height + 2*VP8BORDERINPIXELS,
    905             1,
    906             sd.buffer_alloc);
    907         vpx_img_set_rect(&ctx->preview_img,
    908             VP8BORDERINPIXELS, VP8BORDERINPIXELS,
    909             sd.y_width, sd.y_height);
    910             */
    911 
    912         ctx->preview_img.bps = 12;
    913         ctx->preview_img.planes[VPX_PLANE_Y] = sd.y_buffer;
    914         ctx->preview_img.planes[VPX_PLANE_U] = sd.u_buffer;
    915         ctx->preview_img.planes[VPX_PLANE_V] = sd.v_buffer;
    916 
    917         if (sd.clrtype == REG_YUV)
    918             ctx->preview_img.fmt = VPX_IMG_FMT_I420;
    919         else
    920             ctx->preview_img.fmt = VPX_IMG_FMT_VPXI420;
    921 
    922         ctx->preview_img.x_chroma_shift = 1;
    923         ctx->preview_img.y_chroma_shift = 1;
    924 
    925         ctx->preview_img.d_w = sd.y_width;
    926         ctx->preview_img.d_h = sd.y_height;
    927         ctx->preview_img.stride[VPX_PLANE_Y] = sd.y_stride;
    928         ctx->preview_img.stride[VPX_PLANE_U] = sd.uv_stride;
    929         ctx->preview_img.stride[VPX_PLANE_V] = sd.uv_stride;
    930         ctx->preview_img.w   = sd.y_width;
    931         ctx->preview_img.h   = sd.y_height;
    932 
    933         return &ctx->preview_img;
    934     }
    935     else
    936         return NULL;
    937 }
    938 
    939 static vpx_codec_err_t vp8e_update_entropy(vpx_codec_alg_priv_t *ctx,
    940         int ctr_id,
    941         va_list args)
    942 {
    943     int update = va_arg(args, int);
    944     vp8_update_entropy(ctx->cpi, update);
    945     return VPX_CODEC_OK;
    946 
    947 }
    948 
    949 static vpx_codec_err_t vp8e_update_reference(vpx_codec_alg_priv_t *ctx,
    950         int ctr_id,
    951         va_list args)
    952 {
    953     int update = va_arg(args, int);
    954     vp8_update_reference(ctx->cpi, update);
    955     return VPX_CODEC_OK;
    956 }
    957 
    958 static vpx_codec_err_t vp8e_use_reference(vpx_codec_alg_priv_t *ctx,
    959         int ctr_id,
    960         va_list args)
    961 {
    962     int reference_flag = va_arg(args, int);
    963     vp8_use_as_reference(ctx->cpi, reference_flag);
    964     return VPX_CODEC_OK;
    965 }
    966 
    967 static vpx_codec_err_t vp8e_set_roi_map(vpx_codec_alg_priv_t *ctx,
    968                                         int ctr_id,
    969                                         va_list args)
    970 {
    971     vpx_roi_map_t *data = va_arg(args, vpx_roi_map_t *);
    972 
    973     if (data)
    974     {
    975         vpx_roi_map_t *roi = (vpx_roi_map_t *)data;
    976 
    977         if (!vp8_set_roimap(ctx->cpi, roi->roi_map, roi->rows, roi->cols, roi->delta_q, roi->delta_lf, roi->static_threshold))
    978             return VPX_CODEC_OK;
    979         else
    980             return VPX_CODEC_INVALID_PARAM;
    981     }
    982     else
    983         return VPX_CODEC_INVALID_PARAM;
    984 }
    985 
    986 
    987 static vpx_codec_err_t vp8e_set_activemap(vpx_codec_alg_priv_t *ctx,
    988         int ctr_id,
    989         va_list args)
    990 {
    991     vpx_active_map_t *data = va_arg(args, vpx_active_map_t *);
    992 
    993     if (data)
    994     {
    995 
    996         vpx_active_map_t *map = (vpx_active_map_t *)data;
    997 
    998         if (!vp8_set_active_map(ctx->cpi, map->active_map, map->rows, map->cols))
    999             return VPX_CODEC_OK;
   1000         else
   1001             return VPX_CODEC_INVALID_PARAM;
   1002     }
   1003     else
   1004         return VPX_CODEC_INVALID_PARAM;
   1005 }
   1006 
   1007 static vpx_codec_err_t vp8e_set_scalemode(vpx_codec_alg_priv_t *ctx,
   1008         int ctr_id,
   1009         va_list args)
   1010 {
   1011 
   1012     vpx_scaling_mode_t *data =  va_arg(args, vpx_scaling_mode_t *);
   1013 
   1014     if (data)
   1015     {
   1016         int res;
   1017         vpx_scaling_mode_t scalemode = *(vpx_scaling_mode_t *)data ;
   1018         res = vp8_set_internal_size(ctx->cpi, scalemode.h_scaling_mode, scalemode.v_scaling_mode);
   1019 
   1020         if (!res)
   1021         {
   1022             /*force next frame a key frame to effect scaling mode */
   1023             ctx->next_frame_flag |= FRAMEFLAGS_KEY;
   1024             return VPX_CODEC_OK;
   1025         }
   1026         else
   1027             return VPX_CODEC_INVALID_PARAM;
   1028     }
   1029     else
   1030         return VPX_CODEC_INVALID_PARAM;
   1031 }
   1032 
   1033 
   1034 static vpx_codec_ctrl_fn_map_t vp8e_ctf_maps[] =
   1035 {
   1036     {VP8_SET_REFERENCE,                 vp8e_set_reference},
   1037     {VP8_COPY_REFERENCE,                vp8e_get_reference},
   1038     {VP8_SET_POSTPROC,                  vp8e_set_previewpp},
   1039     {VP8E_UPD_ENTROPY,                  vp8e_update_entropy},
   1040     {VP8E_UPD_REFERENCE,                vp8e_update_reference},
   1041     {VP8E_USE_REFERENCE,                vp8e_use_reference},
   1042     {VP8E_SET_ROI_MAP,                  vp8e_set_roi_map},
   1043     {VP8E_SET_ACTIVEMAP,                vp8e_set_activemap},
   1044     {VP8E_SET_SCALEMODE,                vp8e_set_scalemode},
   1045     {VP8E_SET_ENCODING_MODE,            set_param},
   1046     {VP8E_SET_CPUUSED,                  set_param},
   1047     {VP8E_SET_NOISE_SENSITIVITY,        set_param},
   1048     {VP8E_SET_ENABLEAUTOALTREF,         set_param},
   1049     {VP8E_SET_SHARPNESS,                set_param},
   1050     {VP8E_SET_STATIC_THRESHOLD,         set_param},
   1051     {VP8E_SET_TOKEN_PARTITIONS,         set_param},
   1052     {VP8E_GET_LAST_QUANTIZER,           get_param},
   1053     {VP8E_GET_LAST_QUANTIZER_64,        get_param},
   1054     {VP8E_SET_ARNR_MAXFRAMES,           set_param},
   1055     {VP8E_SET_ARNR_STRENGTH ,           set_param},
   1056     {VP8E_SET_ARNR_TYPE     ,           set_param},
   1057     {VP8E_SET_TUNING,                   set_param},
   1058     {VP8E_SET_CQ_LEVEL,                 set_param},
   1059     { -1, NULL},
   1060 };
   1061 
   1062 static vpx_codec_enc_cfg_map_t vp8e_usage_cfg_map[] =
   1063 {
   1064     {
   1065     0,
   1066     {
   1067         0,                  /* g_usage */
   1068         0,                  /* g_threads */
   1069         0,                  /* g_profile */
   1070 
   1071         320,                /* g_width */
   1072         240,                /* g_height */
   1073         {1, 30},            /* g_timebase */
   1074 
   1075         0,                  /* g_error_resilient */
   1076 
   1077         VPX_RC_ONE_PASS,    /* g_pass */
   1078 
   1079         0,                  /* g_lag_in_frames */
   1080 
   1081         0,                  /* rc_dropframe_thresh */
   1082         0,                  /* rc_resize_allowed */
   1083         60,                 /* rc_resize_down_thresold */
   1084         30,                 /* rc_resize_up_thresold */
   1085 
   1086         VPX_VBR,            /* rc_end_usage */
   1087 #if VPX_ENCODER_ABI_VERSION > (1 + VPX_CODEC_ABI_VERSION)
   1088         {0},                /* rc_twopass_stats_in */
   1089 #endif
   1090         256,                /* rc_target_bandwidth */
   1091 
   1092         4,                  /* rc_min_quantizer */
   1093         63,                 /* rc_max_quantizer */
   1094         95,                 /* rc_undershoot_pct */
   1095         200,                /* rc_overshoot_pct */
   1096 
   1097         6000,               /* rc_max_buffer_size */
   1098         4000,               /* rc_buffer_initial_size; */
   1099         5000,               /* rc_buffer_optimal_size; */
   1100 
   1101         50,                 /* rc_two_pass_vbrbias  */
   1102         0,                  /* rc_two_pass_vbrmin_section */
   1103         400,                /* rc_two_pass_vbrmax_section */
   1104 
   1105         /* keyframing settings (kf) */
   1106         VPX_KF_AUTO,        /* g_kfmode*/
   1107         0,                  /* kf_min_dist */
   1108         9999,               /* kf_max_dist */
   1109 
   1110 #if VPX_ENCODER_ABI_VERSION == (1 + VPX_CODEC_ABI_VERSION)
   1111         1,                  /* g_delete_first_pass_file */
   1112         "vp8.fpf"           /* first pass filename */
   1113 #endif
   1114     }},
   1115     { -1, {NOT_IMPLEMENTED}}
   1116 };
   1117 
   1118 
   1119 #ifndef VERSION_STRING
   1120 #define VERSION_STRING
   1121 #endif
   1122 CODEC_INTERFACE(vpx_codec_vp8_cx) =
   1123 {
   1124     "WebM Project VP8 Encoder" VERSION_STRING,
   1125     VPX_CODEC_INTERNAL_ABI_VERSION,
   1126     VPX_CODEC_CAP_ENCODER | VPX_CODEC_CAP_PSNR,
   1127     /* vpx_codec_caps_t          caps; */
   1128     vp8e_init,          /* vpx_codec_init_fn_t       init; */
   1129     vp8e_destroy,       /* vpx_codec_destroy_fn_t    destroy; */
   1130     vp8e_ctf_maps,      /* vpx_codec_ctrl_fn_map_t  *ctrl_maps; */
   1131     NOT_IMPLEMENTED,    /* vpx_codec_get_mmap_fn_t   get_mmap; */
   1132     NOT_IMPLEMENTED,    /* vpx_codec_set_mmap_fn_t   set_mmap; */
   1133     {
   1134         NOT_IMPLEMENTED,    /* vpx_codec_peek_si_fn_t    peek_si; */
   1135         NOT_IMPLEMENTED,    /* vpx_codec_get_si_fn_t     get_si; */
   1136         NOT_IMPLEMENTED,    /* vpx_codec_decode_fn_t     decode; */
   1137         NOT_IMPLEMENTED,    /* vpx_codec_frame_get_fn_t  frame_get; */
   1138     },
   1139     {
   1140         vp8e_usage_cfg_map, /* vpx_codec_enc_cfg_map_t    peek_si; */
   1141         vp8e_encode,        /* vpx_codec_encode_fn_t      encode; */
   1142         vp8e_get_cxdata,    /* vpx_codec_get_cx_data_fn_t   frame_get; */
   1143         vp8e_set_config,
   1144         NOT_IMPLEMENTED,
   1145         vp8e_get_preview,
   1146     } /* encoder functions */
   1147 };
   1148 
   1149 
   1150 /*
   1151  * BEGIN BACKWARDS COMPATIBILITY SHIM.
   1152  */
   1153 #define FORCE_KEY   2
   1154 static vpx_codec_err_t api1_control(vpx_codec_alg_priv_t *ctx,
   1155                                     int                   ctrl_id,
   1156                                     va_list               args)
   1157 {
   1158     vpx_codec_ctrl_fn_map_t *entry;
   1159 
   1160     switch (ctrl_id)
   1161     {
   1162     case VP8E_SET_FLUSHFLAG:
   1163         /* VP8 sample code did VP8E_SET_FLUSHFLAG followed by
   1164          * vpx_codec_get_cx_data() rather than vpx_codec_encode().
   1165          */
   1166         return vp8e_encode(ctx, NULL, 0, 0, 0, 0);
   1167     case VP8E_SET_FRAMETYPE:
   1168         ctx->base.enc.tbd |= FORCE_KEY;
   1169         return VPX_CODEC_OK;
   1170     }
   1171 
   1172     for (entry = vp8e_ctf_maps; entry && entry->fn; entry++)
   1173     {
   1174         if (!entry->ctrl_id || entry->ctrl_id == ctrl_id)
   1175         {
   1176             return entry->fn(ctx, ctrl_id, args);
   1177         }
   1178     }
   1179 
   1180     return VPX_CODEC_ERROR;
   1181 }
   1182 
   1183 
   1184 static vpx_codec_ctrl_fn_map_t api1_ctrl_maps[] =
   1185 {
   1186     {0, api1_control},
   1187     { -1, NULL}
   1188 };
   1189 
   1190 
   1191 static vpx_codec_err_t api1_encode(vpx_codec_alg_priv_t  *ctx,
   1192                                    const vpx_image_t     *img,
   1193                                    vpx_codec_pts_t        pts,
   1194                                    unsigned long          duration,
   1195                                    vpx_enc_frame_flags_t  flags,
   1196                                    unsigned long          deadline)
   1197 {
   1198     int force = ctx->base.enc.tbd;
   1199 
   1200     ctx->base.enc.tbd = 0;
   1201     return vp8e_encode
   1202            (ctx,
   1203             img,
   1204             pts,
   1205             duration,
   1206             flags | ((force & FORCE_KEY) ? VPX_EFLAG_FORCE_KF : 0),
   1207             deadline);
   1208 }
   1209 
   1210 
   1211 vpx_codec_iface_t vpx_enc_vp8_algo =
   1212 {
   1213     "WebM Project VP8 Encoder (Deprecated API)" VERSION_STRING,
   1214     VPX_CODEC_INTERNAL_ABI_VERSION,
   1215     VPX_CODEC_CAP_ENCODER,
   1216     /* vpx_codec_caps_t          caps; */
   1217     vp8e_init,          /* vpx_codec_init_fn_t       init; */
   1218     vp8e_destroy,       /* vpx_codec_destroy_fn_t    destroy; */
   1219     api1_ctrl_maps,     /* vpx_codec_ctrl_fn_map_t  *ctrl_maps; */
   1220     NOT_IMPLEMENTED,    /* vpx_codec_get_mmap_fn_t   get_mmap; */
   1221     NOT_IMPLEMENTED,    /* vpx_codec_set_mmap_fn_t   set_mmap; */
   1222     {NOT_IMPLEMENTED},  /* decoder functions */
   1223     {
   1224         vp8e_usage_cfg_map, /* vpx_codec_enc_cfg_map_t    peek_si; */
   1225         api1_encode,        /* vpx_codec_encode_fn_t      encode; */
   1226         vp8e_get_cxdata,    /* vpx_codec_get_cx_data_fn_t   frame_get; */
   1227         vp8e_set_config,
   1228         NOT_IMPLEMENTED,
   1229         vp8e_get_preview,
   1230     } /* encoder functions */
   1231 };
   1232