ref: 93f88ab55abfe0262789d6312f549d3adc484c58
dir: /vpx/src/vpx_decoder.c/
/* * 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) 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 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 = VPX_CODEC_OK; if (!(flags & VPX_CODEC_USE_XMA)) { res = ctx->iface->init(ctx, NULL); 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; /* Sanity checks */ /* NULL data ptr allowed if data_sz is 0 too */ 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.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_FRAME)) 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_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); }