/* *  Copyright (c) 2010 The VP8 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 vpx_decoder.c * \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    {        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);             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;     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.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.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);}