/* *  Copyright (c) 2010 The WebM project authors. All Rights Reserved. * *  Use of this source code is governed by a BSD-style license *  that can be found in the LICENSE file in the root of the source *  tree. An additional intellectual property rights grant can be found *  in the file PATENTS.  All contributing project authors may *  be found in the AUTHORS file in the root of the source tree. */  /*!\file * \brief Provides the high level interface to wrap decoder algorithms. * */#include <string.h>#include "vpx/internal/vpx_codec_internal.h" #define SAVE_STATUS(ctx,var) (ctx?(ctx->err = var):var) vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t      *ctx,                                       vpx_codec_iface_t    *iface,                                       vpx_codec_dec_cfg_t  *cfg,                                       vpx_codec_flags_t     flags,                                       int                   ver) {  vpx_codec_err_t res;   if (ver != VPX_DECODER_ABI_VERSION)    res = VPX_CODEC_ABI_MISMATCH;  else if (!ctx || !iface)    res = VPX_CODEC_INVALID_PARAM;  else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)    res = VPX_CODEC_ABI_MISMATCH;  else if ((flags & VPX_CODEC_USE_XMA) && !(iface->caps & VPX_CODEC_CAP_XMA))    res = VPX_CODEC_INCAPABLE;  else if ((flags & VPX_CODEC_USE_POSTPROC) && !(iface->caps & VPX_CODEC_CAP_POSTPROC))    res = VPX_CODEC_INCAPABLE;  else if ((flags & VPX_CODEC_USE_ERROR_CONCEALMENT) &&           !(iface->caps & VPX_CODEC_CAP_ERROR_CONCEALMENT))    res = VPX_CODEC_INCAPABLE;  else if ((flags & VPX_CODEC_USE_INPUT_FRAGMENTS) &&           !(iface->caps & VPX_CODEC_CAP_INPUT_FRAGMENTS))    res = VPX_CODEC_INCAPABLE;  else if (!(iface->caps & VPX_CODEC_CAP_DECODER))    res = VPX_CODEC_INCAPABLE;  else {    memset(ctx, 0, sizeof(*ctx));    ctx->iface = iface;    ctx->name = iface->name;    ctx->priv = NULL;    ctx->init_flags = flags;    ctx->config.dec = cfg;    res = VPX_CODEC_OK;     if (!(flags & VPX_CODEC_USE_XMA)) {      res = ctx->iface->init(ctx, NULL);       if (res) {        ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;        vpx_codec_destroy(ctx);      }       if (ctx->priv)        ctx->priv->iface = ctx->iface;    }  }   return SAVE_STATUS(ctx, res);}  vpx_codec_err_t vpx_codec_peek_stream_info(vpx_codec_iface_t       *iface,                                           const uint8_t         *data,                                           unsigned int           data_sz,                                           vpx_codec_stream_info_t *si) {  vpx_codec_err_t res;   if (!iface || !data || !data_sz || !si      || si->sz < sizeof(vpx_codec_stream_info_t))    res = VPX_CODEC_INVALID_PARAM;  else {    /* Set default/unknown values */    si->w = 0;    si->h = 0;     res = iface->dec.peek_si(data, data_sz, si);  }   return res;}  vpx_codec_err_t vpx_codec_get_stream_info(vpx_codec_ctx_t         *ctx,                                          vpx_codec_stream_info_t *si) {  vpx_codec_err_t res;   if (!ctx || !si || si->sz < sizeof(vpx_codec_stream_info_t))    res = VPX_CODEC_INVALID_PARAM;  else if (!ctx->iface || !ctx->priv)    res = VPX_CODEC_ERROR;  else {    /* Set default/unknown values */    si->w = 0;    si->h = 0;     res = ctx->iface->dec.get_si(ctx->priv->alg_priv, si);  }   return SAVE_STATUS(ctx, res);}  vpx_codec_err_t vpx_codec_decode(vpx_codec_ctx_t    *ctx,                                 const uint8_t        *data,                                 unsigned int    data_sz,                                 void       *user_priv,                                 long        deadline) {  vpx_codec_err_t res;   /* Sanity checks */  /* NULL data ptr allowed if data_sz is 0 too */  if (!ctx || (!data && data_sz))    res = VPX_CODEC_INVALID_PARAM;  else if (!ctx->iface || !ctx->priv)    res = VPX_CODEC_ERROR;  else {    res = ctx->iface->dec.decode(ctx->priv->alg_priv, data, data_sz,                                 user_priv, deadline);  }   return SAVE_STATUS(ctx, res);} vpx_image_t *vpx_codec_get_frame(vpx_codec_ctx_t  *ctx,                                 vpx_codec_iter_t *iter) {  vpx_image_t *img;   if (!ctx || !iter || !ctx->iface || !ctx->priv)    img = NULL;  else    img = ctx->iface->dec.get_frame(ctx->priv->alg_priv, iter);   return img;}  vpx_codec_err_t vpx_codec_register_put_frame_cb(vpx_codec_ctx_t             *ctx,                                                vpx_codec_put_frame_cb_fn_t  cb,                                                void                      *user_priv) {  vpx_codec_err_t res;   if (!ctx || !cb)    res = VPX_CODEC_INVALID_PARAM;  else if (!ctx->iface || !ctx->priv           || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME))    res = VPX_CODEC_ERROR;  else {    ctx->priv->dec.put_frame_cb.u.put_frame = cb;    ctx->priv->dec.put_frame_cb.user_priv = user_priv;    res = VPX_CODEC_OK;  }   return SAVE_STATUS(ctx, res);}  vpx_codec_err_t vpx_codec_register_put_slice_cb(vpx_codec_ctx_t             *ctx,                                                vpx_codec_put_slice_cb_fn_t  cb,                                                void                      *user_priv) {  vpx_codec_err_t res;   if (!ctx || !cb)    res = VPX_CODEC_INVALID_PARAM;  else if (!ctx->iface || !ctx->priv           || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME))    res = VPX_CODEC_ERROR;  else {    ctx->priv->dec.put_slice_cb.u.put_slice = cb;    ctx->priv->dec.put_slice_cb.user_priv = user_priv;    res = VPX_CODEC_OK;  }   return SAVE_STATUS(ctx, res);}  vpx_codec_err_t vpx_codec_get_mem_map(vpx_codec_ctx_t                *ctx,                                      vpx_codec_mmap_t               *mmap,                                      vpx_codec_iter_t               *iter) {  vpx_codec_err_t res = VPX_CODEC_OK;   if (!ctx || !mmap || !iter || !ctx->iface)    res = VPX_CODEC_INVALID_PARAM;  else if (!(ctx->iface->caps & VPX_CODEC_CAP_XMA))    res = VPX_CODEC_ERROR;  else    res = ctx->iface->get_mmap(ctx, mmap, iter);   return SAVE_STATUS(ctx, res);}  vpx_codec_err_t vpx_codec_set_mem_map(vpx_codec_ctx_t   *ctx,                                      vpx_codec_mmap_t  *mmap,                                      unsigned int     num_maps) {  vpx_codec_err_t res = VPX_CODEC_MEM_ERROR;   if (!ctx || !mmap || !ctx->iface)    res = VPX_CODEC_INVALID_PARAM;  else if (!(ctx->iface->caps & VPX_CODEC_CAP_XMA))    res = VPX_CODEC_ERROR;  else {    unsigned int i;     for (i = 0; i < num_maps; i++, mmap++) {      if (!mmap->base)        break;       /* Everything look ok, set the mmap in the decoder */      res = ctx->iface->set_mmap(ctx, mmap);       if (res)        break;    }  }   return SAVE_STATUS(ctx, res);}