| /* |
| * Copyright (c) 2021, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 3-Clause Clear License |
| * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear |
| * License was not distributed with this source code in the LICENSE file, you |
| * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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 |
| * aomedia.org/license/patent-license/. |
| */ |
| |
| /*!\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 (!(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); |
| 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, size_t 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, |
| size_t data_sz, void *user_priv) { |
| aom_codec_err_t res; |
| |
| if (!ctx) |
| 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); |
| } |
| |
| 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_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) { |
| res = AOM_CODEC_ERROR; |
| } else if (!(ctx->iface->caps & AOM_CODEC_CAP_EXTERNAL_FRAME_BUFFER)) { |
| res = AOM_CODEC_INCAPABLE; |
| } else { |
| res = ctx->iface->dec.set_fb_fn(get_alg_priv(ctx), cb_get, cb_release, |
| cb_priv); |
| } |
| |
| return SAVE_STATUS(ctx, res); |
| } |