vpx_encoder.c 12.1 KB
Newer Older
John Koleszar's avatar
John Koleszar committed
1
/*
2
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
John Koleszar's avatar
John Koleszar committed
3
 *
4
 *  Use of this source code is governed by a BSD-style license
5 6
 *  that can be found in the LICENSE file in the root of the source
 *  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.
John Koleszar's avatar
John Koleszar committed
9 10 11
 */


12
/*!\file
John Koleszar's avatar
John Koleszar committed
13 14 15 16 17
 * \brief Provides the high level interface to wrap encoder algorithms.
 *
 */
#include <limits.h>
#include <string.h>
18
#include "vpx/internal/vpx_codec_internal.h"
19
#include "vpx_config.h"
John Koleszar's avatar
John Koleszar committed
20 21 22 23 24 25 26

#define SAVE_STATUS(ctx,var) (ctx?(ctx->err = var):var)

vpx_codec_err_t vpx_codec_enc_init_ver(vpx_codec_ctx_t      *ctx,
                                       vpx_codec_iface_t    *iface,
                                       vpx_codec_enc_cfg_t  *cfg,
                                       vpx_codec_flags_t     flags,
John Koleszar's avatar
John Koleszar committed
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
                                       int                   ver) {
  vpx_codec_err_t res;

  if (ver != VPX_ENCODER_ABI_VERSION)
    res = VPX_CODEC_ABI_MISMATCH;
  else if (!ctx || !iface || !cfg)
    res = VPX_CODEC_INVALID_PARAM;
  else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)
    res = VPX_CODEC_ABI_MISMATCH;
  else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
    res = VPX_CODEC_INCAPABLE;
  else if ((flags & VPX_CODEC_USE_XMA) && !(iface->caps & VPX_CODEC_CAP_XMA))
    res = VPX_CODEC_INCAPABLE;
  else if ((flags & VPX_CODEC_USE_PSNR)
           && !(iface->caps & VPX_CODEC_CAP_PSNR))
    res = VPX_CODEC_INCAPABLE;
  else if ((flags & VPX_CODEC_USE_OUTPUT_PARTITION)
           && !(iface->caps & VPX_CODEC_CAP_OUTPUT_PARTITION))
    res = VPX_CODEC_INCAPABLE;
  else {
    ctx->iface = iface;
    ctx->name = iface->name;
    ctx->priv = NULL;
    ctx->init_flags = flags;
    ctx->config.enc = cfg;
John Koleszar's avatar
John Koleszar committed
52
    res = ctx->iface->init(ctx, NULL);
John Koleszar's avatar
John Koleszar committed
53 54 55 56

    if (res) {
      ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
      vpx_codec_destroy(ctx);
John Koleszar's avatar
John Koleszar committed
57 58
    }

John Koleszar's avatar
John Koleszar committed
59 60 61 62 63
    if (ctx->priv)
      ctx->priv->iface = ctx->iface;
  }

  return SAVE_STATUS(ctx, res);
John Koleszar's avatar
John Koleszar committed
64 65
}

John Koleszar's avatar
John Koleszar committed
66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151
vpx_codec_err_t vpx_codec_enc_init_multi_ver(vpx_codec_ctx_t      *ctx,
                                             vpx_codec_iface_t    *iface,
                                             vpx_codec_enc_cfg_t  *cfg,
                                             int                   num_enc,
                                             vpx_codec_flags_t     flags,
                                             vpx_rational_t       *dsf,
                                             int                   ver) {
  vpx_codec_err_t res = 0;

  if (ver != VPX_ENCODER_ABI_VERSION)
    res = VPX_CODEC_ABI_MISMATCH;
  else if (!ctx || !iface || !cfg || (num_enc > 16 || num_enc < 1))
    res = VPX_CODEC_INVALID_PARAM;
  else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)
    res = VPX_CODEC_ABI_MISMATCH;
  else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
    res = VPX_CODEC_INCAPABLE;
  else if ((flags & VPX_CODEC_USE_XMA) && !(iface->caps & VPX_CODEC_CAP_XMA))
    res = VPX_CODEC_INCAPABLE;
  else if ((flags & VPX_CODEC_USE_PSNR)
           && !(iface->caps & VPX_CODEC_CAP_PSNR))
    res = VPX_CODEC_INCAPABLE;
  else if ((flags & VPX_CODEC_USE_OUTPUT_PARTITION)
           && !(iface->caps & VPX_CODEC_CAP_OUTPUT_PARTITION))
    res = VPX_CODEC_INCAPABLE;
  else {
    int i;
    void *mem_loc = NULL;

    if (!(res = iface->enc.mr_get_mem_loc(cfg, &mem_loc))) {
      for (i = 0; i < num_enc; i++) {
        vpx_codec_priv_enc_mr_cfg_t mr_cfg;

        /* Validate down-sampling factor. */
        if (dsf->num < 1 || dsf->num > 4096 || dsf->den < 1 ||
            dsf->den > dsf->num) {
          res = VPX_CODEC_INVALID_PARAM;
          break;
        }

        mr_cfg.mr_low_res_mode_info = mem_loc;
        mr_cfg.mr_total_resolutions = num_enc;
        mr_cfg.mr_encoder_id = num_enc - 1 - i;
        mr_cfg.mr_down_sampling_factor.num = dsf->num;
        mr_cfg.mr_down_sampling_factor.den = dsf->den;

        /* Force Key-frame synchronization. Namely, encoder at higher
         * resolution always use the same frame_type chosen by the
         * lowest-resolution encoder.
         */
        if (mr_cfg.mr_encoder_id)
          cfg->kf_mode = VPX_KF_DISABLED;

        ctx->iface = iface;
        ctx->name = iface->name;
        ctx->priv = NULL;
        ctx->init_flags = flags;
        ctx->config.enc = cfg;
        res = ctx->iface->init(ctx, &mr_cfg);

        if (res) {
          const char *error_detail =
            ctx->priv ? ctx->priv->err_detail : NULL;
          /* Destroy current ctx */
          ctx->err_detail = error_detail;
          vpx_codec_destroy(ctx);

          /* Destroy already allocated high-level ctx */
          while (i) {
            ctx--;
            ctx->err_detail = error_detail;
            vpx_codec_destroy(ctx);
            i--;
          }
        }

        if (ctx->priv)
          ctx->priv->iface = ctx->iface;

        if (res)
          break;

        ctx++;
        cfg++;
        dsf++;
      }
152
      ctx--;
John Koleszar's avatar
John Koleszar committed
153 154 155 156 157
    }
  }

  return SAVE_STATUS(ctx, res);
}
John Koleszar's avatar
John Koleszar committed
158 159 160


vpx_codec_err_t  vpx_codec_enc_config_default(vpx_codec_iface_t    *iface,
John Koleszar's avatar
John Koleszar committed
161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179
                                              vpx_codec_enc_cfg_t  *cfg,
                                              unsigned int          usage) {
  vpx_codec_err_t res;
  vpx_codec_enc_cfg_map_t *map;

  if (!iface || !cfg || usage > INT_MAX)
    res = VPX_CODEC_INVALID_PARAM;
  else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
    res = VPX_CODEC_INCAPABLE;
  else {
    res = VPX_CODEC_INVALID_PARAM;

    for (map = iface->enc.cfg_maps; map->usage >= 0; map++) {
      if (map->usage == (int)usage) {
        *cfg = map->cfg;
        cfg->g_usage = usage;
        res = VPX_CODEC_OK;
        break;
      }
John Koleszar's avatar
John Koleszar committed
180
    }
John Koleszar's avatar
John Koleszar committed
181
  }
John Koleszar's avatar
John Koleszar committed
182

John Koleszar's avatar
John Koleszar committed
183
  return res;
John Koleszar's avatar
John Koleszar committed
184 185 186 187 188 189 190 191 192
}


#if ARCH_X86 || ARCH_X86_64
/* On X86, disable the x87 unit's internal 80 bit precision for better
 * consistency with the SSE unit's 64 bit precision.
 */
#include "vpx_ports/x86.h"
#define FLOATING_POINT_INIT() do {\
John Koleszar's avatar
John Koleszar committed
193
    unsigned short x87_orig_mode = x87_set_double_precision();
John Koleszar's avatar
John Koleszar committed
194
#define FLOATING_POINT_RESTORE() \
John Koleszar's avatar
John Koleszar committed
195
  x87_set_control_word(x87_orig_mode); }while(0)
John Koleszar's avatar
John Koleszar committed
196 197 198 199 200 201 202 203 204 205 206 207 208


#else
static void FLOATING_POINT_INIT() {}
static void FLOATING_POINT_RESTORE() {}
#endif


vpx_codec_err_t  vpx_codec_encode(vpx_codec_ctx_t            *ctx,
                                  const vpx_image_t          *img,
                                  vpx_codec_pts_t             pts,
                                  unsigned long               duration,
                                  vpx_enc_frame_flags_t       flags,
John Koleszar's avatar
John Koleszar committed
209
                                  unsigned long               deadline) {
John Koleszar's avatar
John Koleszar committed
210
  vpx_codec_err_t res = 0;
John Koleszar's avatar
John Koleszar committed
211 212 213 214 215 216 217 218

  if (!ctx || (img && !duration))
    res = VPX_CODEC_INVALID_PARAM;
  else if (!ctx->iface || !ctx->priv)
    res = VPX_CODEC_ERROR;
  else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
    res = VPX_CODEC_INCAPABLE;
  else {
219 220
    unsigned int num_enc = ctx->priv->enc.total_encoders;

John Koleszar's avatar
John Koleszar committed
221 222 223 224
    /* Execute in a normalized floating point environment, if the platform
     * requires it.
     */
    FLOATING_POINT_INIT();
John Koleszar's avatar
John Koleszar committed
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250

    if (num_enc == 1)
      res = ctx->iface->enc.encode(ctx->priv->alg_priv, img, pts,
                                   duration, flags, deadline);
    else {
      /* Multi-resolution encoding:
       * Encode multi-levels in reverse order. For example,
       * if mr_total_resolutions = 3, first encode level 2,
       * then encode level 1, and finally encode level 0.
       */
      int i;

      ctx += num_enc - 1;
      if (img) img += num_enc - 1;

      for (i = num_enc - 1; i >= 0; i--) {
        if ((res = ctx->iface->enc.encode(ctx->priv->alg_priv, img, pts,
                                          duration, flags, deadline)))
          break;

        ctx--;
        if (img) img--;
      }
      ctx++;
    }

John Koleszar's avatar
John Koleszar committed
251 252 253 254
    FLOATING_POINT_RESTORE();
  }

  return SAVE_STATUS(ctx, res);
John Koleszar's avatar
John Koleszar committed
255 256 257 258
}


const vpx_codec_cx_pkt_t *vpx_codec_get_cx_data(vpx_codec_ctx_t   *ctx,
John Koleszar's avatar
John Koleszar committed
259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294
                                                vpx_codec_iter_t  *iter) {
  const vpx_codec_cx_pkt_t *pkt = NULL;

  if (ctx) {
    if (!iter)
      ctx->err = VPX_CODEC_INVALID_PARAM;
    else if (!ctx->iface || !ctx->priv)
      ctx->err = VPX_CODEC_ERROR;
    else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
      ctx->err = VPX_CODEC_INCAPABLE;
    else
      pkt = ctx->iface->enc.get_cx_data(ctx->priv->alg_priv, iter);
  }

  if (pkt && pkt->kind == VPX_CODEC_CX_FRAME_PKT) {
    /* If the application has specified a destination area for the
     * compressed data, and the codec has not placed the data there,
     * and it fits, copy it.
     */
    char *dst_buf = ctx->priv->enc.cx_data_dst_buf.buf;

    if (dst_buf
        && pkt->data.raw.buf != dst_buf
        && pkt->data.raw.sz
        + ctx->priv->enc.cx_data_pad_before
        + ctx->priv->enc.cx_data_pad_after
        <= ctx->priv->enc.cx_data_dst_buf.sz) {
      vpx_codec_cx_pkt_t *modified_pkt = &ctx->priv->enc.cx_data_pkt;

      memcpy(dst_buf + ctx->priv->enc.cx_data_pad_before,
             pkt->data.raw.buf, pkt->data.raw.sz);
      *modified_pkt = *pkt;
      modified_pkt->data.raw.buf = dst_buf;
      modified_pkt->data.raw.sz += ctx->priv->enc.cx_data_pad_before
                                   + ctx->priv->enc.cx_data_pad_after;
      pkt = modified_pkt;
John Koleszar's avatar
John Koleszar committed
295 296
    }

John Koleszar's avatar
John Koleszar committed
297 298 299
    if (dst_buf == pkt->data.raw.buf) {
      ctx->priv->enc.cx_data_dst_buf.buf = dst_buf + pkt->data.raw.sz;
      ctx->priv->enc.cx_data_dst_buf.sz -= pkt->data.raw.sz;
John Koleszar's avatar
John Koleszar committed
300
    }
John Koleszar's avatar
John Koleszar committed
301
  }
John Koleszar's avatar
John Koleszar committed
302

John Koleszar's avatar
John Koleszar committed
303
  return pkt;
John Koleszar's avatar
John Koleszar committed
304 305 306 307
}


vpx_codec_err_t vpx_codec_set_cx_data_buf(vpx_codec_ctx_t       *ctx,
John Koleszar's avatar
John Koleszar committed
308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325
                                          const vpx_fixed_buf_t *buf,
                                          unsigned int           pad_before,
                                          unsigned int           pad_after) {
  if (!ctx || !ctx->priv)
    return VPX_CODEC_INVALID_PARAM;

  if (buf) {
    ctx->priv->enc.cx_data_dst_buf = *buf;
    ctx->priv->enc.cx_data_pad_before = pad_before;
    ctx->priv->enc.cx_data_pad_after = pad_after;
  } else {
    ctx->priv->enc.cx_data_dst_buf.buf = NULL;
    ctx->priv->enc.cx_data_dst_buf.sz = 0;
    ctx->priv->enc.cx_data_pad_before = 0;
    ctx->priv->enc.cx_data_pad_after = 0;
  }

  return VPX_CODEC_OK;
John Koleszar's avatar
John Koleszar committed
326 327 328
}


John Koleszar's avatar
John Koleszar committed
329 330 331 332 333 334 335 336 337 338 339 340 341
const vpx_image_t *vpx_codec_get_preview_frame(vpx_codec_ctx_t   *ctx) {
  vpx_image_t *img = NULL;

  if (ctx) {
    if (!ctx->iface || !ctx->priv)
      ctx->err = VPX_CODEC_ERROR;
    else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
      ctx->err = VPX_CODEC_INCAPABLE;
    else if (!ctx->iface->enc.get_preview)
      ctx->err = VPX_CODEC_INCAPABLE;
    else
      img = ctx->iface->enc.get_preview(ctx->priv->alg_priv);
  }
John Koleszar's avatar
John Koleszar committed
342

John Koleszar's avatar
John Koleszar committed
343
  return img;
John Koleszar's avatar
John Koleszar committed
344 345 346
}


John Koleszar's avatar
John Koleszar committed
347 348
vpx_fixed_buf_t *vpx_codec_get_global_headers(vpx_codec_ctx_t   *ctx) {
  vpx_fixed_buf_t *buf = NULL;
John Koleszar's avatar
John Koleszar committed
349

John Koleszar's avatar
John Koleszar committed
350 351 352 353 354 355 356 357 358 359 360 361
  if (ctx) {
    if (!ctx->iface || !ctx->priv)
      ctx->err = VPX_CODEC_ERROR;
    else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
      ctx->err = VPX_CODEC_INCAPABLE;
    else if (!ctx->iface->enc.get_glob_hdrs)
      ctx->err = VPX_CODEC_INCAPABLE;
    else
      buf = ctx->iface->enc.get_glob_hdrs(ctx->priv->alg_priv);
  }

  return buf;
John Koleszar's avatar
John Koleszar committed
362 363 364 365
}


vpx_codec_err_t  vpx_codec_enc_config_set(vpx_codec_ctx_t            *ctx,
John Koleszar's avatar
John Koleszar committed
366 367
                                          const vpx_codec_enc_cfg_t  *cfg) {
  vpx_codec_err_t res;
John Koleszar's avatar
John Koleszar committed
368

John Koleszar's avatar
John Koleszar committed
369 370 371 372 373 374
  if (!ctx || !ctx->iface || !ctx->priv || !cfg)
    res = VPX_CODEC_INVALID_PARAM;
  else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
    res = VPX_CODEC_INCAPABLE;
  else
    res = ctx->iface->enc.cfg_set(ctx->priv->alg_priv, cfg);
John Koleszar's avatar
John Koleszar committed
375

John Koleszar's avatar
John Koleszar committed
376
  return SAVE_STATUS(ctx, res);
John Koleszar's avatar
John Koleszar committed
377 378 379 380
}


int vpx_codec_pkt_list_add(struct vpx_codec_pkt_list *list,
John Koleszar's avatar
John Koleszar committed
381 382 383 384 385
                           const struct vpx_codec_cx_pkt *pkt) {
  if (list->cnt < list->max) {
    list->pkts[list->cnt++] = *pkt;
    return 0;
  }
John Koleszar's avatar
John Koleszar committed
386

John Koleszar's avatar
John Koleszar committed
387
  return 1;
John Koleszar's avatar
John Koleszar committed
388 389 390 391
}


const vpx_codec_cx_pkt_t *vpx_codec_pkt_list_get(struct vpx_codec_pkt_list *list,
John Koleszar's avatar
John Koleszar committed
392 393
                                                 vpx_codec_iter_t           *iter) {
  const vpx_codec_cx_pkt_t *pkt;
John Koleszar's avatar
John Koleszar committed
394

John Koleszar's avatar
John Koleszar committed
395 396 397
  if (!(*iter)) {
    *iter = list->pkts;
  }
John Koleszar's avatar
John Koleszar committed
398

John Koleszar's avatar
John Koleszar committed
399
  pkt = (const void *) * iter;
John Koleszar's avatar
John Koleszar committed
400

John Koleszar's avatar
John Koleszar committed
401 402 403 404
  if ((size_t)(pkt - list->pkts) < list->cnt)
    *iter = pkt + 1;
  else
    pkt = NULL;
John Koleszar's avatar
John Koleszar committed
405

John Koleszar's avatar
John Koleszar committed
406
  return pkt;
John Koleszar's avatar
John Koleszar committed
407
}