| /* |
| * 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) |
| |
| static vpx_codec_alg_priv_t *get_alg_priv(vpx_codec_ctx_t *ctx) { |
| return (vpx_codec_alg_priv_t *)ctx->priv; |
| } |
| |
| vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t *ctx, |
| vpx_codec_iface_t *iface, |
| const 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_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 = ctx->iface->init(ctx, NULL); |
| if (res) { |
| ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL; |
| vpx_codec_destroy(ctx); |
| } |
| } |
| |
| 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(get_alg_priv(ctx), 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) || (data && !data_sz)) |
| res = VPX_CODEC_INVALID_PARAM; |
| else if (!ctx->iface || !ctx->priv) |
| res = VPX_CODEC_ERROR; |
| else { |
| res = ctx->iface->dec.decode(get_alg_priv(ctx), 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(get_alg_priv(ctx), 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_SLICE)) |
| 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_set_frame_buffer_functions( |
| vpx_codec_ctx_t *ctx, vpx_get_frame_buffer_cb_fn_t cb_get, |
| vpx_release_frame_buffer_cb_fn_t cb_release, void *cb_priv) { |
| vpx_codec_err_t res; |
| |
| if (!ctx || !cb_get || !cb_release) { |
| res = VPX_CODEC_INVALID_PARAM; |
| } else if (!ctx->iface || !ctx->priv || |
| !(ctx->iface->caps & VPX_CODEC_CAP_EXTERNAL_FRAME_BUFFER)) { |
| res = VPX_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); |
| } |