/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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/*!\file
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* \brief Provides the high level interface to wrap decoder algorithms.
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*
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*/
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#include <string.h>
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#include "aom/internal/aom_codec_internal.h"
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#define SAVE_STATUS(ctx, var) (ctx ? (ctx->err = var) : var)
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static aom_codec_alg_priv_t *get_alg_priv(aom_codec_ctx_t *ctx) {
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return (aom_codec_alg_priv_t *)ctx->priv;
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}
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aom_codec_err_t aom_codec_dec_init_ver(aom_codec_ctx_t *ctx,
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aom_codec_iface_t *iface,
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const aom_codec_dec_cfg_t *cfg,
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aom_codec_flags_t flags, int ver) {
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aom_codec_err_t res;
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if (ver != AOM_DECODER_ABI_VERSION)
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res = AOM_CODEC_ABI_MISMATCH;
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else if (!ctx || !iface)
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res = AOM_CODEC_INVALID_PARAM;
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else if (iface->abi_version != AOM_CODEC_INTERNAL_ABI_VERSION)
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res = AOM_CODEC_ABI_MISMATCH;
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else if ((flags & AOM_CODEC_USE_POSTPROC) &&
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!(iface->caps & AOM_CODEC_CAP_POSTPROC))
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res = AOM_CODEC_INCAPABLE;
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else if (!(iface->caps & AOM_CODEC_CAP_DECODER))
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res = AOM_CODEC_INCAPABLE;
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else {
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memset(ctx, 0, sizeof(*ctx));
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ctx->iface = iface;
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ctx->name = iface->name;
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ctx->priv = NULL;
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ctx->init_flags = flags;
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ctx->config.dec = cfg;
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res = ctx->iface->init(ctx, NULL);
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if (res) {
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ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
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aom_codec_destroy(ctx);
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}
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}
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return SAVE_STATUS(ctx, res);
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}
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aom_codec_err_t aom_codec_peek_stream_info(aom_codec_iface_t *iface,
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const uint8_t *data, size_t data_sz,
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aom_codec_stream_info_t *si) {
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aom_codec_err_t res;
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if (!iface || !data || !data_sz || !si) {
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res = AOM_CODEC_INVALID_PARAM;
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} else {
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/* Set default/unknown values */
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si->w = 0;
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si->h = 0;
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res = iface->dec.peek_si(data, data_sz, si);
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}
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return res;
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}
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aom_codec_err_t aom_codec_get_stream_info(aom_codec_ctx_t *ctx,
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aom_codec_stream_info_t *si) {
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aom_codec_err_t res;
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if (!ctx || !si) {
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res = AOM_CODEC_INVALID_PARAM;
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} else if (!ctx->iface || !ctx->priv) {
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res = AOM_CODEC_ERROR;
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} else {
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/* Set default/unknown values */
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si->w = 0;
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si->h = 0;
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res = ctx->iface->dec.get_si(get_alg_priv(ctx), si);
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}
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return SAVE_STATUS(ctx, res);
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}
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aom_codec_err_t aom_codec_decode(aom_codec_ctx_t *ctx, const uint8_t *data,
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size_t data_sz, void *user_priv) {
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aom_codec_err_t res;
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if (!ctx)
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res = AOM_CODEC_INVALID_PARAM;
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else if (!ctx->iface || !ctx->priv)
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res = AOM_CODEC_ERROR;
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else {
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res = ctx->iface->dec.decode(get_alg_priv(ctx), data, data_sz, user_priv);
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}
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return SAVE_STATUS(ctx, res);
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}
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aom_image_t *aom_codec_get_frame(aom_codec_ctx_t *ctx, aom_codec_iter_t *iter) {
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aom_image_t *img;
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if (!ctx || !iter || !ctx->iface || !ctx->priv)
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img = NULL;
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else
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img = ctx->iface->dec.get_frame(get_alg_priv(ctx), iter);
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return img;
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}
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aom_codec_err_t aom_codec_register_put_frame_cb(aom_codec_ctx_t *ctx,
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aom_codec_put_frame_cb_fn_t cb,
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void *user_priv) {
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aom_codec_err_t res;
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if (!ctx || !cb)
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res = AOM_CODEC_INVALID_PARAM;
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else if (!ctx->iface || !ctx->priv ||
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!(ctx->iface->caps & AOM_CODEC_CAP_PUT_FRAME))
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res = AOM_CODEC_ERROR;
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else {
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ctx->priv->dec.put_frame_cb.u.put_frame = cb;
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ctx->priv->dec.put_frame_cb.user_priv = user_priv;
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res = AOM_CODEC_OK;
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}
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return SAVE_STATUS(ctx, res);
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}
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aom_codec_err_t aom_codec_register_put_slice_cb(aom_codec_ctx_t *ctx,
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aom_codec_put_slice_cb_fn_t cb,
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void *user_priv) {
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aom_codec_err_t res;
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if (!ctx || !cb)
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res = AOM_CODEC_INVALID_PARAM;
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else if (!ctx->iface || !ctx->priv ||
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!(ctx->iface->caps & AOM_CODEC_CAP_PUT_SLICE))
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res = AOM_CODEC_ERROR;
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else {
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ctx->priv->dec.put_slice_cb.u.put_slice = cb;
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ctx->priv->dec.put_slice_cb.user_priv = user_priv;
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res = AOM_CODEC_OK;
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}
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return SAVE_STATUS(ctx, res);
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}
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aom_codec_err_t aom_codec_set_frame_buffer_functions(
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aom_codec_ctx_t *ctx, aom_get_frame_buffer_cb_fn_t cb_get,
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aom_release_frame_buffer_cb_fn_t cb_release, void *cb_priv) {
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aom_codec_err_t res;
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if (!ctx || !cb_get || !cb_release) {
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res = AOM_CODEC_INVALID_PARAM;
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} else if (!ctx->iface || !ctx->priv ||
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!(ctx->iface->caps & AOM_CODEC_CAP_EXTERNAL_FRAME_BUFFER)) {
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res = AOM_CODEC_ERROR;
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} else {
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res = ctx->iface->dec.set_fb_fn(get_alg_priv(ctx), cb_get, cb_release,
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cb_priv);
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}
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return SAVE_STATUS(ctx, res);
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}
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