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