Subversion Repositories Kolibri OS

Rev

Blame | Last modification | View Log | RSS feed

  1. /*
  2.  * Copyright (c) 2010, Google, Inc.
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. /**
  22.  * @file
  23.  * VP8 encoder support via libvpx
  24.  */
  25.  
  26. #define VPX_DISABLE_CTRL_TYPECHECKS 1
  27. #define VPX_CODEC_DISABLE_COMPAT    1
  28. #include <vpx/vpx_encoder.h>
  29. #include <vpx/vp8cx.h>
  30.  
  31. #include "avcodec.h"
  32. #include "internal.h"
  33. #include "libavutil/avassert.h"
  34. #include "libavutil/base64.h"
  35. #include "libavutil/common.h"
  36. #include "libavutil/intreadwrite.h"
  37. #include "libavutil/mathematics.h"
  38. #include "libavutil/opt.h"
  39.  
  40. /**
  41.  * Portion of struct vpx_codec_cx_pkt from vpx_encoder.h.
  42.  * One encoded frame returned from the library.
  43.  */
  44. struct FrameListData {
  45.     void *buf;                       /**< compressed data buffer */
  46.     size_t sz;                       /**< length of compressed data */
  47.     void *buf_alpha;
  48.     size_t sz_alpha;
  49.     int64_t pts;                     /**< time stamp to show frame
  50.                                           (in timebase units) */
  51.     unsigned long duration;          /**< duration to show frame
  52.                                           (in timebase units) */
  53.     uint32_t flags;                  /**< flags for this frame */
  54.     uint64_t sse[4];
  55.     int have_sse;                    /**< true if we have pending sse[] */
  56.     uint64_t frame_number;
  57.     struct FrameListData *next;
  58. };
  59.  
  60. typedef struct VP8EncoderContext {
  61.     AVClass *class;
  62.     struct vpx_codec_ctx encoder;
  63.     struct vpx_image rawimg;
  64.     struct vpx_codec_ctx encoder_alpha;
  65.     struct vpx_image rawimg_alpha;
  66.     uint8_t is_alpha;
  67.     struct vpx_fixed_buf twopass_stats;
  68.     int deadline; //i.e., RT/GOOD/BEST
  69.     uint64_t sse[4];
  70.     int have_sse; /**< true if we have pending sse[] */
  71.     uint64_t frame_number;
  72.     struct FrameListData *coded_frame_list;
  73.  
  74.     int cpu_used;
  75.     /**
  76.      * VP8 specific flags, see VP8F_* below.
  77.      */
  78.     int flags;
  79. #define VP8F_ERROR_RESILIENT 0x00000001 ///< Enable measures appropriate for streaming over lossy links
  80. #define VP8F_AUTO_ALT_REF    0x00000002 ///< Enable automatic alternate reference frame generation
  81.  
  82.     int auto_alt_ref;
  83.  
  84.     int arnr_max_frames;
  85.     int arnr_strength;
  86.     int arnr_type;
  87.  
  88.     int lag_in_frames;
  89.     int error_resilient;
  90.     int crf;
  91.     int max_intra_rate;
  92. } VP8Context;
  93.  
  94. /** String mappings for enum vp8e_enc_control_id */
  95. static const char *const ctlidstr[] = {
  96.     [VP8E_UPD_ENTROPY]           = "VP8E_UPD_ENTROPY",
  97.     [VP8E_UPD_REFERENCE]         = "VP8E_UPD_REFERENCE",
  98.     [VP8E_USE_REFERENCE]         = "VP8E_USE_REFERENCE",
  99.     [VP8E_SET_ROI_MAP]           = "VP8E_SET_ROI_MAP",
  100.     [VP8E_SET_ACTIVEMAP]         = "VP8E_SET_ACTIVEMAP",
  101.     [VP8E_SET_SCALEMODE]         = "VP8E_SET_SCALEMODE",
  102.     [VP8E_SET_CPUUSED]           = "VP8E_SET_CPUUSED",
  103.     [VP8E_SET_ENABLEAUTOALTREF]  = "VP8E_SET_ENABLEAUTOALTREF",
  104.     [VP8E_SET_NOISE_SENSITIVITY] = "VP8E_SET_NOISE_SENSITIVITY",
  105.     [VP8E_SET_SHARPNESS]         = "VP8E_SET_SHARPNESS",
  106.     [VP8E_SET_STATIC_THRESHOLD]  = "VP8E_SET_STATIC_THRESHOLD",
  107.     [VP8E_SET_TOKEN_PARTITIONS]  = "VP8E_SET_TOKEN_PARTITIONS",
  108.     [VP8E_GET_LAST_QUANTIZER]    = "VP8E_GET_LAST_QUANTIZER",
  109.     [VP8E_SET_ARNR_MAXFRAMES]    = "VP8E_SET_ARNR_MAXFRAMES",
  110.     [VP8E_SET_ARNR_STRENGTH]     = "VP8E_SET_ARNR_STRENGTH",
  111.     [VP8E_SET_ARNR_TYPE]         = "VP8E_SET_ARNR_TYPE",
  112.     [VP8E_SET_CQ_LEVEL]          = "VP8E_SET_CQ_LEVEL",
  113.     [VP8E_SET_MAX_INTRA_BITRATE_PCT] = "VP8E_SET_MAX_INTRA_BITRATE_PCT",
  114. };
  115.  
  116. static av_cold void log_encoder_error(AVCodecContext *avctx, const char *desc)
  117. {
  118.     VP8Context *ctx = avctx->priv_data;
  119.     const char *error  = vpx_codec_error(&ctx->encoder);
  120.     const char *detail = vpx_codec_error_detail(&ctx->encoder);
  121.  
  122.     av_log(avctx, AV_LOG_ERROR, "%s: %s\n", desc, error);
  123.     if (detail)
  124.         av_log(avctx, AV_LOG_ERROR, "  Additional information: %s\n", detail);
  125. }
  126.  
  127. static av_cold void dump_enc_cfg(AVCodecContext *avctx,
  128.                                  const struct vpx_codec_enc_cfg *cfg)
  129. {
  130.     int width = -30;
  131.     int level = AV_LOG_DEBUG;
  132.  
  133.     av_log(avctx, level, "vpx_codec_enc_cfg\n");
  134.     av_log(avctx, level, "generic settings\n"
  135.            "  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n"
  136.            "  %*s{%u/%u}\n  %*s%u\n  %*s%d\n  %*s%u\n",
  137.            width, "g_usage:",           cfg->g_usage,
  138.            width, "g_threads:",         cfg->g_threads,
  139.            width, "g_profile:",         cfg->g_profile,
  140.            width, "g_w:",               cfg->g_w,
  141.            width, "g_h:",               cfg->g_h,
  142.            width, "g_timebase:",        cfg->g_timebase.num, cfg->g_timebase.den,
  143.            width, "g_error_resilient:", cfg->g_error_resilient,
  144.            width, "g_pass:",            cfg->g_pass,
  145.            width, "g_lag_in_frames:",   cfg->g_lag_in_frames);
  146.     av_log(avctx, level, "rate control settings\n"
  147.            "  %*s%u\n  %*s%u\n  %*s%u\n  %*s%u\n"
  148.            "  %*s%d\n  %*s%p(%zu)\n  %*s%u\n",
  149.            width, "rc_dropframe_thresh:",   cfg->rc_dropframe_thresh,
  150.            width, "rc_resize_allowed:",     cfg->rc_resize_allowed,
  151.            width, "rc_resize_up_thresh:",   cfg->rc_resize_up_thresh,
  152.            width, "rc_resize_down_thresh:", cfg->rc_resize_down_thresh,
  153.            width, "rc_end_usage:",          cfg->rc_end_usage,
  154.            width, "rc_twopass_stats_in:",   cfg->rc_twopass_stats_in.buf, cfg->rc_twopass_stats_in.sz,
  155.            width, "rc_target_bitrate:",     cfg->rc_target_bitrate);
  156.     av_log(avctx, level, "quantizer settings\n"
  157.            "  %*s%u\n  %*s%u\n",
  158.            width, "rc_min_quantizer:", cfg->rc_min_quantizer,
  159.            width, "rc_max_quantizer:", cfg->rc_max_quantizer);
  160.     av_log(avctx, level, "bitrate tolerance\n"
  161.            "  %*s%u\n  %*s%u\n",
  162.            width, "rc_undershoot_pct:", cfg->rc_undershoot_pct,
  163.            width, "rc_overshoot_pct:",  cfg->rc_overshoot_pct);
  164.     av_log(avctx, level, "decoder buffer model\n"
  165.             "  %*s%u\n  %*s%u\n  %*s%u\n",
  166.             width, "rc_buf_sz:",         cfg->rc_buf_sz,
  167.             width, "rc_buf_initial_sz:", cfg->rc_buf_initial_sz,
  168.             width, "rc_buf_optimal_sz:", cfg->rc_buf_optimal_sz);
  169.     av_log(avctx, level, "2 pass rate control settings\n"
  170.            "  %*s%u\n  %*s%u\n  %*s%u\n",
  171.            width, "rc_2pass_vbr_bias_pct:",       cfg->rc_2pass_vbr_bias_pct,
  172.            width, "rc_2pass_vbr_minsection_pct:", cfg->rc_2pass_vbr_minsection_pct,
  173.            width, "rc_2pass_vbr_maxsection_pct:", cfg->rc_2pass_vbr_maxsection_pct);
  174.     av_log(avctx, level, "keyframing settings\n"
  175.            "  %*s%d\n  %*s%u\n  %*s%u\n",
  176.            width, "kf_mode:",     cfg->kf_mode,
  177.            width, "kf_min_dist:", cfg->kf_min_dist,
  178.            width, "kf_max_dist:", cfg->kf_max_dist);
  179.     av_log(avctx, level, "\n");
  180. }
  181.  
  182. static void coded_frame_add(void *list, struct FrameListData *cx_frame)
  183. {
  184.     struct FrameListData **p = list;
  185.  
  186.     while (*p != NULL)
  187.         p = &(*p)->next;
  188.     *p = cx_frame;
  189.     cx_frame->next = NULL;
  190. }
  191.  
  192. static av_cold void free_coded_frame(struct FrameListData *cx_frame)
  193. {
  194.     av_freep(&cx_frame->buf);
  195.     if (cx_frame->buf_alpha)
  196.         av_freep(&cx_frame->buf_alpha);
  197.     av_freep(&cx_frame);
  198. }
  199.  
  200. static av_cold void free_frame_list(struct FrameListData *list)
  201. {
  202.     struct FrameListData *p = list;
  203.  
  204.     while (p) {
  205.         list = list->next;
  206.         free_coded_frame(p);
  207.         p = list;
  208.     }
  209. }
  210.  
  211. static av_cold int codecctl_int(AVCodecContext *avctx,
  212.                                 enum vp8e_enc_control_id id, int val)
  213. {
  214.     VP8Context *ctx = avctx->priv_data;
  215.     char buf[80];
  216.     int width = -30;
  217.     int res;
  218.  
  219.     snprintf(buf, sizeof(buf), "%s:", ctlidstr[id]);
  220.     av_log(avctx, AV_LOG_DEBUG, "  %*s%d\n", width, buf, val);
  221.  
  222.     res = vpx_codec_control(&ctx->encoder, id, val);
  223.     if (res != VPX_CODEC_OK) {
  224.         snprintf(buf, sizeof(buf), "Failed to set %s codec control",
  225.                  ctlidstr[id]);
  226.         log_encoder_error(avctx, buf);
  227.     }
  228.  
  229.     return res == VPX_CODEC_OK ? 0 : AVERROR(EINVAL);
  230. }
  231.  
  232. static av_cold int vp8_free(AVCodecContext *avctx)
  233. {
  234.     VP8Context *ctx = avctx->priv_data;
  235.  
  236.     vpx_codec_destroy(&ctx->encoder);
  237.     if (ctx->is_alpha)
  238.         vpx_codec_destroy(&ctx->encoder_alpha);
  239.     av_freep(&ctx->twopass_stats.buf);
  240.     av_freep(&avctx->coded_frame);
  241.     av_freep(&avctx->stats_out);
  242.     free_frame_list(ctx->coded_frame_list);
  243.     return 0;
  244. }
  245.  
  246. static av_cold int vpx_init(AVCodecContext *avctx,
  247.                             const struct vpx_codec_iface *iface)
  248. {
  249.     VP8Context *ctx = avctx->priv_data;
  250.     struct vpx_codec_enc_cfg enccfg;
  251.     struct vpx_codec_enc_cfg enccfg_alpha;
  252.     vpx_codec_flags_t flags = (avctx->flags & CODEC_FLAG_PSNR) ? VPX_CODEC_USE_PSNR : 0;
  253.     int res;
  254.  
  255.     av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
  256.     av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
  257.  
  258.     if (avctx->pix_fmt == AV_PIX_FMT_YUVA420P)
  259.         ctx->is_alpha = 1;
  260.  
  261.     if ((res = vpx_codec_enc_config_default(iface, &enccfg, 0)) != VPX_CODEC_OK) {
  262.         av_log(avctx, AV_LOG_ERROR, "Failed to get config: %s\n",
  263.                vpx_codec_err_to_string(res));
  264.         return AVERROR(EINVAL);
  265.     }
  266.  
  267.     if(!avctx->bit_rate)
  268.         if(avctx->rc_max_rate || avctx->rc_buffer_size || avctx->rc_initial_buffer_occupancy) {
  269.             av_log( avctx, AV_LOG_ERROR, "Rate control parameters set without a bitrate\n");
  270.             return AVERROR(EINVAL);
  271.         }
  272.  
  273.     dump_enc_cfg(avctx, &enccfg);
  274.  
  275.     enccfg.g_w            = avctx->width;
  276.     enccfg.g_h            = avctx->height;
  277.     enccfg.g_timebase.num = avctx->time_base.num;
  278.     enccfg.g_timebase.den = avctx->time_base.den;
  279.     enccfg.g_threads      = avctx->thread_count;
  280.     enccfg.g_lag_in_frames= ctx->lag_in_frames;
  281.  
  282.     if (avctx->flags & CODEC_FLAG_PASS1)
  283.         enccfg.g_pass = VPX_RC_FIRST_PASS;
  284.     else if (avctx->flags & CODEC_FLAG_PASS2)
  285.         enccfg.g_pass = VPX_RC_LAST_PASS;
  286.     else
  287.         enccfg.g_pass = VPX_RC_ONE_PASS;
  288.  
  289.     if (avctx->rc_min_rate == avctx->rc_max_rate &&
  290.         avctx->rc_min_rate == avctx->bit_rate && avctx->bit_rate)
  291.         enccfg.rc_end_usage = VPX_CBR;
  292.     else if (ctx->crf)
  293.         enccfg.rc_end_usage = VPX_CQ;
  294.  
  295.     if (avctx->bit_rate) {
  296.         enccfg.rc_target_bitrate = av_rescale_rnd(avctx->bit_rate, 1, 1000,
  297.                                                 AV_ROUND_NEAR_INF);
  298.     } else {
  299.         if (enccfg.rc_end_usage == VPX_CQ) {
  300.             enccfg.rc_target_bitrate = 1000000;
  301.         } else {
  302.             avctx->bit_rate = enccfg.rc_target_bitrate * 1000;
  303.             av_log(avctx, AV_LOG_WARNING,
  304.                    "Neither bitrate nor constrained quality specified, using default bitrate of %dkbit/sec\n",
  305.                    enccfg.rc_target_bitrate);
  306.         }
  307.     }
  308.  
  309.     if (avctx->qmin >= 0)
  310.         enccfg.rc_min_quantizer = avctx->qmin;
  311.     if (avctx->qmax > 0)
  312.         enccfg.rc_max_quantizer = avctx->qmax;
  313.  
  314.     if (enccfg.rc_end_usage == VPX_CQ) {
  315.         if (ctx->crf < enccfg.rc_min_quantizer || ctx->crf > enccfg.rc_max_quantizer) {
  316.                 av_log(avctx, AV_LOG_ERROR,
  317.                        "CQ level must be between minimum and maximum quantizer value (%d-%d)\n",
  318.                        enccfg.rc_min_quantizer, enccfg.rc_max_quantizer);
  319.                 return AVERROR(EINVAL);
  320.         }
  321.     }
  322.  
  323.     enccfg.rc_dropframe_thresh = avctx->frame_skip_threshold;
  324.  
  325.     //0-100 (0 => CBR, 100 => VBR)
  326.     enccfg.rc_2pass_vbr_bias_pct           = round(avctx->qcompress * 100);
  327.     if (avctx->bit_rate)
  328.         enccfg.rc_2pass_vbr_minsection_pct     =
  329.             avctx->rc_min_rate * 100LL / avctx->bit_rate;
  330.     if (avctx->rc_max_rate)
  331.         enccfg.rc_2pass_vbr_maxsection_pct =
  332.             avctx->rc_max_rate * 100LL / avctx->bit_rate;
  333.  
  334.     if (avctx->rc_buffer_size)
  335.         enccfg.rc_buf_sz         =
  336.             avctx->rc_buffer_size * 1000LL / avctx->bit_rate;
  337.     if (avctx->rc_initial_buffer_occupancy)
  338.         enccfg.rc_buf_initial_sz =
  339.             avctx->rc_initial_buffer_occupancy * 1000LL / avctx->bit_rate;
  340.     enccfg.rc_buf_optimal_sz     = enccfg.rc_buf_sz * 5 / 6;
  341.     enccfg.rc_undershoot_pct     = round(avctx->rc_buffer_aggressivity * 100);
  342.  
  343.     //_enc_init() will balk if kf_min_dist differs from max w/VPX_KF_AUTO
  344.     if (avctx->keyint_min >= 0 && avctx->keyint_min == avctx->gop_size)
  345.         enccfg.kf_min_dist = avctx->keyint_min;
  346.     if (avctx->gop_size >= 0)
  347.         enccfg.kf_max_dist = avctx->gop_size;
  348.  
  349.     if (enccfg.g_pass == VPX_RC_FIRST_PASS)
  350.         enccfg.g_lag_in_frames = 0;
  351.     else if (enccfg.g_pass == VPX_RC_LAST_PASS) {
  352.         int decode_size;
  353.  
  354.         if (!avctx->stats_in) {
  355.             av_log(avctx, AV_LOG_ERROR, "No stats file for second pass\n");
  356.             return AVERROR_INVALIDDATA;
  357.         }
  358.  
  359.         ctx->twopass_stats.sz  = strlen(avctx->stats_in) * 3 / 4;
  360.         ctx->twopass_stats.buf = av_malloc(ctx->twopass_stats.sz);
  361.         if (!ctx->twopass_stats.buf) {
  362.             av_log(avctx, AV_LOG_ERROR,
  363.                    "Stat buffer alloc (%zu bytes) failed\n",
  364.                    ctx->twopass_stats.sz);
  365.             return AVERROR(ENOMEM);
  366.         }
  367.         decode_size = av_base64_decode(ctx->twopass_stats.buf, avctx->stats_in,
  368.                                        ctx->twopass_stats.sz);
  369.         if (decode_size < 0) {
  370.             av_log(avctx, AV_LOG_ERROR, "Stat buffer decode failed\n");
  371.             return AVERROR_INVALIDDATA;
  372.         }
  373.  
  374.         ctx->twopass_stats.sz      = decode_size;
  375.         enccfg.rc_twopass_stats_in = ctx->twopass_stats;
  376.     }
  377.  
  378.     /* 0-3: For non-zero values the encoder increasingly optimizes for reduced
  379.        complexity playback on low powered devices at the expense of encode
  380.        quality. */
  381.    if (avctx->profile != FF_PROFILE_UNKNOWN)
  382.        enccfg.g_profile = avctx->profile;
  383.  
  384.     enccfg.g_error_resilient = ctx->error_resilient || ctx->flags & VP8F_ERROR_RESILIENT;
  385.  
  386.     dump_enc_cfg(avctx, &enccfg);
  387.     /* Construct Encoder Context */
  388.     res = vpx_codec_enc_init(&ctx->encoder, iface, &enccfg, flags);
  389.     if (res != VPX_CODEC_OK) {
  390.         log_encoder_error(avctx, "Failed to initialize encoder");
  391.         return AVERROR(EINVAL);
  392.     }
  393.  
  394.     if (ctx->is_alpha) {
  395.         enccfg_alpha = enccfg;
  396.         res = vpx_codec_enc_init(&ctx->encoder_alpha, iface, &enccfg_alpha, flags);
  397.         if (res != VPX_CODEC_OK) {
  398.             log_encoder_error(avctx, "Failed to initialize alpha encoder");
  399.             return AVERROR(EINVAL);
  400.         }
  401.     }
  402.  
  403.     //codec control failures are currently treated only as warnings
  404.     av_log(avctx, AV_LOG_DEBUG, "vpx_codec_control\n");
  405.     if (ctx->cpu_used != INT_MIN)
  406.         codecctl_int(avctx, VP8E_SET_CPUUSED,          ctx->cpu_used);
  407.     if (ctx->flags & VP8F_AUTO_ALT_REF)
  408.         ctx->auto_alt_ref = 1;
  409.     if (ctx->auto_alt_ref >= 0)
  410.         codecctl_int(avctx, VP8E_SET_ENABLEAUTOALTREF, ctx->auto_alt_ref);
  411.     if (ctx->arnr_max_frames >= 0)
  412.         codecctl_int(avctx, VP8E_SET_ARNR_MAXFRAMES,   ctx->arnr_max_frames);
  413.     if (ctx->arnr_strength >= 0)
  414.         codecctl_int(avctx, VP8E_SET_ARNR_STRENGTH,    ctx->arnr_strength);
  415.     if (ctx->arnr_type >= 0)
  416.         codecctl_int(avctx, VP8E_SET_ARNR_TYPE,        ctx->arnr_type);
  417.     codecctl_int(avctx, VP8E_SET_NOISE_SENSITIVITY, avctx->noise_reduction);
  418.     codecctl_int(avctx, VP8E_SET_TOKEN_PARTITIONS,  av_log2(avctx->slices));
  419.     codecctl_int(avctx, VP8E_SET_STATIC_THRESHOLD,  avctx->mb_threshold);
  420.     codecctl_int(avctx, VP8E_SET_CQ_LEVEL,          ctx->crf);
  421.     if (ctx->max_intra_rate >= 0)
  422.         codecctl_int(avctx, VP8E_SET_MAX_INTRA_BITRATE_PCT, ctx->max_intra_rate);
  423.  
  424.     av_log(avctx, AV_LOG_DEBUG, "Using deadline: %d\n", ctx->deadline);
  425.  
  426.     //provide dummy value to initialize wrapper, values will be updated each _encode()
  427.     vpx_img_wrap(&ctx->rawimg, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
  428.                  (unsigned char*)1);
  429.  
  430.     if (ctx->is_alpha)
  431.         vpx_img_wrap(&ctx->rawimg_alpha, VPX_IMG_FMT_I420, avctx->width, avctx->height, 1,
  432.                      (unsigned char*)1);
  433.  
  434.     avctx->coded_frame = avcodec_alloc_frame();
  435.     if (!avctx->coded_frame) {
  436.         av_log(avctx, AV_LOG_ERROR, "Error allocating coded frame\n");
  437.         vp8_free(avctx);
  438.         return AVERROR(ENOMEM);
  439.     }
  440.     return 0;
  441. }
  442.  
  443. static inline void cx_pktcpy(struct FrameListData *dst,
  444.                              const struct vpx_codec_cx_pkt *src,
  445.                              const struct vpx_codec_cx_pkt *src_alpha,
  446.                              VP8Context *ctx)
  447. {
  448.     dst->pts      = src->data.frame.pts;
  449.     dst->duration = src->data.frame.duration;
  450.     dst->flags    = src->data.frame.flags;
  451.     dst->sz       = src->data.frame.sz;
  452.     dst->buf      = src->data.frame.buf;
  453.     dst->have_sse = 0;
  454.     /* For alt-ref frame, don't store PSNR or increment frame_number */
  455.     if (!(dst->flags & VPX_FRAME_IS_INVISIBLE)) {
  456.         dst->frame_number = ++ctx->frame_number;
  457.         dst->have_sse = ctx->have_sse;
  458.         if (ctx->have_sse) {
  459.             /* associate last-seen SSE to the frame. */
  460.             /* Transfers ownership from ctx to dst. */
  461.             /* WARNING! This makes the assumption that PSNR_PKT comes
  462.                just before the frame it refers to! */
  463.             memcpy(dst->sse, ctx->sse, sizeof(dst->sse));
  464.             ctx->have_sse = 0;
  465.         }
  466.     } else {
  467.         dst->frame_number = -1;   /* sanity marker */
  468.     }
  469.     if (src_alpha) {
  470.         dst->buf_alpha = src_alpha->data.frame.buf;
  471.         dst->sz_alpha = src_alpha->data.frame.sz;
  472.     }
  473.     else {
  474.         dst->buf_alpha = NULL;
  475.         dst->sz_alpha = 0;
  476.     }
  477. }
  478.  
  479. /**
  480.  * Store coded frame information in format suitable for return from encode2().
  481.  *
  482.  * Write information from @a cx_frame to @a pkt
  483.  * @return packet data size on success
  484.  * @return a negative AVERROR on error
  485.  */
  486. static int storeframe(AVCodecContext *avctx, struct FrameListData *cx_frame,
  487.                       AVPacket *pkt, AVFrame *coded_frame)
  488. {
  489.     int ret = ff_alloc_packet2(avctx, pkt, cx_frame->sz);
  490.     uint8_t *side_data;
  491.     if (ret >= 0) {
  492.         memcpy(pkt->data, cx_frame->buf, pkt->size);
  493.         pkt->pts = pkt->dts    = cx_frame->pts;
  494.         coded_frame->pts       = cx_frame->pts;
  495.         coded_frame->key_frame = !!(cx_frame->flags & VPX_FRAME_IS_KEY);
  496.  
  497.         if (coded_frame->key_frame) {
  498.             coded_frame->pict_type = AV_PICTURE_TYPE_I;
  499.             pkt->flags            |= AV_PKT_FLAG_KEY;
  500.         } else
  501.             coded_frame->pict_type = AV_PICTURE_TYPE_P;
  502.  
  503.         if (cx_frame->have_sse) {
  504.             int i;
  505.             /* Beware of the Y/U/V/all order! */
  506.             coded_frame->error[0] = cx_frame->sse[1];
  507.             coded_frame->error[1] = cx_frame->sse[2];
  508.             coded_frame->error[2] = cx_frame->sse[3];
  509.             coded_frame->error[3] = 0;    // alpha
  510.             for (i = 0; i < 4; ++i) {
  511.                 avctx->error[i] += coded_frame->error[i];
  512.             }
  513.             cx_frame->have_sse = 0;
  514.         }
  515.         if (cx_frame->sz_alpha > 0) {
  516.             side_data = av_packet_new_side_data(pkt,
  517.                                                 AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
  518.                                                 cx_frame->sz_alpha + 8);
  519.             if(side_data == NULL) {
  520.                 av_free_packet(pkt);
  521.                 av_free(pkt);
  522.                 return AVERROR(ENOMEM);
  523.             }
  524.             AV_WB64(side_data, 1);
  525.             memcpy(side_data + 8, cx_frame->buf_alpha, cx_frame->sz_alpha);
  526.         }
  527.     } else {
  528.         return ret;
  529.     }
  530.     return pkt->size;
  531. }
  532.  
  533. /**
  534.  * Queue multiple output frames from the encoder, returning the front-most.
  535.  * In cases where vpx_codec_get_cx_data() returns more than 1 frame append
  536.  * the frame queue. Return the head frame if available.
  537.  * @return Stored frame size
  538.  * @return AVERROR(EINVAL) on output size error
  539.  * @return AVERROR(ENOMEM) on coded frame queue data allocation error
  540.  */
  541. static int queue_frames(AVCodecContext *avctx, AVPacket *pkt_out,
  542.                         AVFrame *coded_frame)
  543. {
  544.     VP8Context *ctx = avctx->priv_data;
  545.     const struct vpx_codec_cx_pkt *pkt;
  546.     const struct vpx_codec_cx_pkt *pkt_alpha = NULL;
  547.     const void *iter = NULL;
  548.     const void *iter_alpha = NULL;
  549.     int size = 0;
  550.  
  551.     if (ctx->coded_frame_list) {
  552.         struct FrameListData *cx_frame = ctx->coded_frame_list;
  553.         /* return the leading frame if we've already begun queueing */
  554.         size = storeframe(avctx, cx_frame, pkt_out, coded_frame);
  555.         if (size < 0)
  556.             return size;
  557.         ctx->coded_frame_list = cx_frame->next;
  558.         free_coded_frame(cx_frame);
  559.     }
  560.  
  561.     /* consume all available output from the encoder before returning. buffers
  562.        are only good through the next vpx_codec call */
  563.     while ((pkt = vpx_codec_get_cx_data(&ctx->encoder, &iter)) &&
  564.             (!ctx->is_alpha ||
  565.              (ctx->is_alpha && (pkt_alpha = vpx_codec_get_cx_data(&ctx->encoder_alpha, &iter_alpha))))) {
  566.         switch (pkt->kind) {
  567.         case VPX_CODEC_CX_FRAME_PKT:
  568.             if (!size) {
  569.                 struct FrameListData cx_frame;
  570.  
  571.                 /* avoid storing the frame when the list is empty and we haven't yet
  572.                    provided a frame for output */
  573.                 av_assert0(!ctx->coded_frame_list);
  574.                 cx_pktcpy(&cx_frame, pkt, pkt_alpha, ctx);
  575.                 size = storeframe(avctx, &cx_frame, pkt_out, coded_frame);
  576.                 if (size < 0)
  577.                     return size;
  578.             } else {
  579.                 struct FrameListData *cx_frame =
  580.                     av_malloc(sizeof(struct FrameListData));
  581.  
  582.                 if (!cx_frame) {
  583.                     av_log(avctx, AV_LOG_ERROR,
  584.                            "Frame queue element alloc failed\n");
  585.                     return AVERROR(ENOMEM);
  586.                 }
  587.                 cx_pktcpy(cx_frame, pkt, pkt_alpha, ctx);
  588.                 cx_frame->buf = av_malloc(cx_frame->sz);
  589.  
  590.                 if (!cx_frame->buf) {
  591.                     av_log(avctx, AV_LOG_ERROR,
  592.                            "Data buffer alloc (%zu bytes) failed\n",
  593.                            cx_frame->sz);
  594.                     av_free(cx_frame);
  595.                     return AVERROR(ENOMEM);
  596.                 }
  597.                 memcpy(cx_frame->buf, pkt->data.frame.buf, pkt->data.frame.sz);
  598.                 if (ctx->is_alpha) {
  599.                     cx_frame->buf_alpha = av_malloc(cx_frame->sz_alpha);
  600.                     if (!cx_frame->buf_alpha) {
  601.                         av_log(avctx, AV_LOG_ERROR,
  602.                                "Data buffer alloc (%zu bytes) failed\n",
  603.                                cx_frame->sz_alpha);
  604.                         av_free(cx_frame);
  605.                         return AVERROR(ENOMEM);
  606.                     }
  607.                     memcpy(cx_frame->buf_alpha, pkt_alpha->data.frame.buf, pkt_alpha->data.frame.sz);
  608.                 }
  609.                 coded_frame_add(&ctx->coded_frame_list, cx_frame);
  610.             }
  611.             break;
  612.         case VPX_CODEC_STATS_PKT: {
  613.             struct vpx_fixed_buf *stats = &ctx->twopass_stats;
  614.             stats->buf = av_realloc_f(stats->buf, 1,
  615.                                       stats->sz + pkt->data.twopass_stats.sz);
  616.             if (!stats->buf) {
  617.                 av_log(avctx, AV_LOG_ERROR, "Stat buffer realloc failed\n");
  618.                 return AVERROR(ENOMEM);
  619.             }
  620.             memcpy((uint8_t*)stats->buf + stats->sz,
  621.                    pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz);
  622.             stats->sz += pkt->data.twopass_stats.sz;
  623.             break;
  624.         }
  625.         case VPX_CODEC_PSNR_PKT:
  626.             av_assert0(!ctx->have_sse);
  627.             ctx->sse[0] = pkt->data.psnr.sse[0];
  628.             ctx->sse[1] = pkt->data.psnr.sse[1];
  629.             ctx->sse[2] = pkt->data.psnr.sse[2];
  630.             ctx->sse[3] = pkt->data.psnr.sse[3];
  631.             ctx->have_sse = 1;
  632.             break;
  633.         case VPX_CODEC_CUSTOM_PKT:
  634.             //ignore unsupported/unrecognized packet types
  635.             break;
  636.         }
  637.     }
  638.  
  639.     return size;
  640. }
  641.  
  642. static int vp8_encode(AVCodecContext *avctx, AVPacket *pkt,
  643.                       const AVFrame *frame, int *got_packet)
  644. {
  645.     VP8Context *ctx = avctx->priv_data;
  646.     struct vpx_image *rawimg = NULL;
  647.     struct vpx_image *rawimg_alpha = NULL;
  648.     int64_t timestamp = 0;
  649.     int res, coded_size;
  650.     vpx_enc_frame_flags_t flags = 0;
  651.  
  652.     if (frame) {
  653.         rawimg                      = &ctx->rawimg;
  654.         rawimg->planes[VPX_PLANE_Y] = frame->data[0];
  655.         rawimg->planes[VPX_PLANE_U] = frame->data[1];
  656.         rawimg->planes[VPX_PLANE_V] = frame->data[2];
  657.         rawimg->stride[VPX_PLANE_Y] = frame->linesize[0];
  658.         rawimg->stride[VPX_PLANE_U] = frame->linesize[1];
  659.         rawimg->stride[VPX_PLANE_V] = frame->linesize[2];
  660.         if (ctx->is_alpha) {
  661.             uint8_t *u_plane, *v_plane;
  662.             rawimg_alpha = &ctx->rawimg_alpha;
  663.             rawimg_alpha->planes[VPX_PLANE_Y] = frame->data[3];
  664.             u_plane = av_malloc(frame->linesize[1] * frame->height);
  665.             memset(u_plane, 0x80, frame->linesize[1] * frame->height);
  666.             rawimg_alpha->planes[VPX_PLANE_U] = u_plane;
  667.             v_plane = av_malloc(frame->linesize[2] * frame->height);
  668.             memset(v_plane, 0x80, frame->linesize[2] * frame->height);
  669.             rawimg_alpha->planes[VPX_PLANE_V] = v_plane;
  670.             rawimg_alpha->stride[VPX_PLANE_Y] = frame->linesize[0];
  671.             rawimg_alpha->stride[VPX_PLANE_U] = frame->linesize[1];
  672.             rawimg_alpha->stride[VPX_PLANE_V] = frame->linesize[2];
  673.         }
  674.         timestamp                   = frame->pts;
  675.         if (frame->pict_type == AV_PICTURE_TYPE_I)
  676.             flags |= VPX_EFLAG_FORCE_KF;
  677.     }
  678.  
  679.     res = vpx_codec_encode(&ctx->encoder, rawimg, timestamp,
  680.                            avctx->ticks_per_frame, flags, ctx->deadline);
  681.     if (res != VPX_CODEC_OK) {
  682.         log_encoder_error(avctx, "Error encoding frame");
  683.         return AVERROR_INVALIDDATA;
  684.     }
  685.  
  686.     if (ctx->is_alpha) {
  687.         res = vpx_codec_encode(&ctx->encoder_alpha, rawimg_alpha, timestamp,
  688.                                avctx->ticks_per_frame, flags, ctx->deadline);
  689.         if (res != VPX_CODEC_OK) {
  690.             log_encoder_error(avctx, "Error encoding alpha frame");
  691.             return AVERROR_INVALIDDATA;
  692.         }
  693.     }
  694.  
  695.     coded_size = queue_frames(avctx, pkt, avctx->coded_frame);
  696.  
  697.     if (!frame && avctx->flags & CODEC_FLAG_PASS1) {
  698.         unsigned int b64_size = AV_BASE64_SIZE(ctx->twopass_stats.sz);
  699.  
  700.         avctx->stats_out = av_malloc(b64_size);
  701.         if (!avctx->stats_out) {
  702.             av_log(avctx, AV_LOG_ERROR, "Stat buffer alloc (%d bytes) failed\n",
  703.                    b64_size);
  704.             return AVERROR(ENOMEM);
  705.         }
  706.         av_base64_encode(avctx->stats_out, b64_size, ctx->twopass_stats.buf,
  707.                          ctx->twopass_stats.sz);
  708.     }
  709.  
  710.     if (rawimg_alpha) {
  711.         av_free(rawimg_alpha->planes[VPX_PLANE_U]);
  712.         av_free(rawimg_alpha->planes[VPX_PLANE_V]);
  713.     }
  714.  
  715.     *got_packet = !!coded_size;
  716.     return 0;
  717. }
  718.  
  719. #define OFFSET(x) offsetof(VP8Context, x)
  720. #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
  721. static const AVOption options[] = {
  722.     { "cpu-used",        "Quality/Speed ratio modifier",           OFFSET(cpu_used),        AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE},
  723.     { "auto-alt-ref",    "Enable use of alternate reference "
  724.                          "frames (2-pass only)",                   OFFSET(auto_alt_ref),    AV_OPT_TYPE_INT, {.i64 = -1},      -1,      1,       VE},
  725.     { "lag-in-frames",   "Number of frames to look ahead for "
  726.                          "alternate reference frame selection",    OFFSET(lag_in_frames),   AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE},
  727.     { "arnr-maxframes",  "altref noise reduction max frame count", OFFSET(arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE},
  728.     { "arnr-strength",   "altref noise reduction filter strength", OFFSET(arnr_strength),   AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE},
  729.     { "arnr-type",       "altref noise reduction filter type",     OFFSET(arnr_type),       AV_OPT_TYPE_INT, {.i64 = -1},      -1,      INT_MAX, VE, "arnr_type"},
  730.     { "backward",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, VE, "arnr_type" },
  731.     { "forward",         NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2}, 0, 0, VE, "arnr_type" },
  732.     { "centered",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 3}, 0, 0, VE, "arnr_type" },
  733.     { "deadline",        "Time to spend encoding, in microseconds.", OFFSET(deadline),      AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
  734.     { "best",            NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_BEST_QUALITY}, 0, 0, VE, "quality"},
  735.     { "good",            NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_GOOD_QUALITY}, 0, 0, VE, "quality"},
  736.     { "realtime",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = VPX_DL_REALTIME},     0, 0, VE, "quality"},
  737.     { "error-resilient", "Error resilience configuration", OFFSET(error_resilient), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, VE, "er"},
  738.     { "max-intra-rate",  "Maximum I-frame bitrate (pct) 0=unlimited",  OFFSET(max_intra_rate),  AV_OPT_TYPE_INT,  {.i64 = -1}, -1,      INT_MAX, VE},
  739. #ifdef VPX_ERROR_RESILIENT_DEFAULT
  740.     { "default",         "Improve resiliency against losses of whole frames", 0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_DEFAULT}, 0, 0, VE, "er"},
  741.     { "partitions",      "The frame partitions are independently decodable "
  742.                          "by the bool decoder, meaning that partitions can be decoded even "
  743.                          "though earlier partitions have been lost. Note that intra predicition"
  744.                          " is still done over the partition boundary.",       0, AV_OPT_TYPE_CONST, {.i64 = VPX_ERROR_RESILIENT_PARTITIONS}, 0, 0, VE, "er"},
  745. #endif
  746. {"speed", "", offsetof(VP8Context, cpu_used), AV_OPT_TYPE_INT, {.i64 = 3}, -16, 16, VE},
  747. {"quality", "", offsetof(VP8Context, deadline), AV_OPT_TYPE_INT, {.i64 = VPX_DL_GOOD_QUALITY}, INT_MIN, INT_MAX, VE, "quality"},
  748. {"vp8flags", "", offsetof(VP8Context, flags), FF_OPT_TYPE_FLAGS, {.i64 = 0}, 0, UINT_MAX, VE, "flags"},
  749. {"error_resilient", "enable error resilience", 0, FF_OPT_TYPE_CONST, {.dbl = VP8F_ERROR_RESILIENT}, INT_MIN, INT_MAX, VE, "flags"},
  750. {"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"},
  751. {"arnr_max_frames", "altref noise reduction max frame count", offsetof(VP8Context, arnr_max_frames), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 15, VE},
  752. {"arnr_strength", "altref noise reduction filter strength", offsetof(VP8Context, arnr_strength), AV_OPT_TYPE_INT, {.i64 = 3}, 0, 6, VE},
  753. {"arnr_type", "altref noise reduction filter type", offsetof(VP8Context, arnr_type), AV_OPT_TYPE_INT, {.i64 = 3}, 1, 3, VE},
  754. {"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},
  755.     { "crf",              "Select the quality for constant quality mode", offsetof(VP8Context, crf), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, VE },
  756.     { NULL }
  757. };
  758.  
  759. static const AVCodecDefault defaults[] = {
  760.     { "qmin",             "-1" },
  761.     { "qmax",             "-1" },
  762.     { "g",                "-1" },
  763.     { "keyint_min",       "-1" },
  764.     { NULL },
  765. };
  766.  
  767. #if CONFIG_LIBVPX_VP8_ENCODER
  768. static av_cold int vp8_init(AVCodecContext *avctx)
  769. {
  770.     return vpx_init(avctx, &vpx_codec_vp8_cx_algo);
  771. }
  772.  
  773. static const AVClass class_vp8 = {
  774.     .class_name = "libvpx-vp8 encoder",
  775.     .item_name  = av_default_item_name,
  776.     .option     = options,
  777.     .version    = LIBAVUTIL_VERSION_INT,
  778. };
  779.  
  780. AVCodec ff_libvpx_vp8_encoder = {
  781.     .name           = "libvpx",
  782.     .long_name      = NULL_IF_CONFIG_SMALL("libvpx VP8"),
  783.     .type           = AVMEDIA_TYPE_VIDEO,
  784.     .id             = AV_CODEC_ID_VP8,
  785.     .priv_data_size = sizeof(VP8Context),
  786.     .init           = vp8_init,
  787.     .encode2        = vp8_encode,
  788.     .close          = vp8_free,
  789.     .capabilities   = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS,
  790.     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE },
  791.     .priv_class     = &class_vp8,
  792.     .defaults       = defaults,
  793. };
  794. #endif /* CONFIG_LIBVPX_VP8_ENCODER */
  795.  
  796. #if CONFIG_LIBVPX_VP9_ENCODER
  797. static av_cold int vp9_init(AVCodecContext *avctx)
  798. {
  799.     return vpx_init(avctx, &vpx_codec_vp9_cx_algo);
  800. }
  801.  
  802. static const AVClass class_vp9 = {
  803.     .class_name = "libvpx-vp9 encoder",
  804.     .item_name  = av_default_item_name,
  805.     .option     = options,
  806.     .version    = LIBAVUTIL_VERSION_INT,
  807. };
  808.  
  809. AVCodec ff_libvpx_vp9_encoder = {
  810.     .name           = "libvpx-vp9",
  811.     .long_name      = NULL_IF_CONFIG_SMALL("libvpx VP9"),
  812.     .type           = AVMEDIA_TYPE_VIDEO,
  813.     .id             = AV_CODEC_ID_VP9,
  814.     .priv_data_size = sizeof(VP8Context),
  815.     .init           = vp9_init,
  816.     .encode2        = vp8_encode,
  817.     .close          = vp8_free,
  818.     .capabilities   = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS | CODEC_CAP_EXPERIMENTAL,
  819.     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
  820.     .priv_class     = &class_vp9,
  821.     .defaults       = defaults,
  822. };
  823. #endif /* CONFIG_LIBVPX_VP9_ENCODER */
  824.