1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libvpx/vpx/src/vpx_decoder.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,228 @@
1.4 +/*
1.5 + * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license
1.8 + * that can be found in the LICENSE file in the root of the source
1.9 + * tree. An additional intellectual property rights grant can be found
1.10 + * in the file PATENTS. All contributing project authors may
1.11 + * be found in the AUTHORS file in the root of the source tree.
1.12 + */
1.13 +
1.14 +
1.15 +/*!\file
1.16 + * \brief Provides the high level interface to wrap decoder algorithms.
1.17 + *
1.18 + */
1.19 +#include <string.h>
1.20 +#include "vpx/internal/vpx_codec_internal.h"
1.21 +
1.22 +#define SAVE_STATUS(ctx,var) (ctx?(ctx->err = var):var)
1.23 +
1.24 +vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t *ctx,
1.25 + vpx_codec_iface_t *iface,
1.26 + vpx_codec_dec_cfg_t *cfg,
1.27 + vpx_codec_flags_t flags,
1.28 + int ver) {
1.29 + vpx_codec_err_t res;
1.30 +
1.31 + if (ver != VPX_DECODER_ABI_VERSION)
1.32 + res = VPX_CODEC_ABI_MISMATCH;
1.33 + else if (!ctx || !iface)
1.34 + res = VPX_CODEC_INVALID_PARAM;
1.35 + else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)
1.36 + res = VPX_CODEC_ABI_MISMATCH;
1.37 + else if ((flags & VPX_CODEC_USE_XMA) && !(iface->caps & VPX_CODEC_CAP_XMA))
1.38 + res = VPX_CODEC_INCAPABLE;
1.39 + else if ((flags & VPX_CODEC_USE_POSTPROC) && !(iface->caps & VPX_CODEC_CAP_POSTPROC))
1.40 + res = VPX_CODEC_INCAPABLE;
1.41 + else if ((flags & VPX_CODEC_USE_ERROR_CONCEALMENT) &&
1.42 + !(iface->caps & VPX_CODEC_CAP_ERROR_CONCEALMENT))
1.43 + res = VPX_CODEC_INCAPABLE;
1.44 + else if ((flags & VPX_CODEC_USE_INPUT_FRAGMENTS) &&
1.45 + !(iface->caps & VPX_CODEC_CAP_INPUT_FRAGMENTS))
1.46 + res = VPX_CODEC_INCAPABLE;
1.47 + else if (!(iface->caps & VPX_CODEC_CAP_DECODER))
1.48 + res = VPX_CODEC_INCAPABLE;
1.49 + else {
1.50 + memset(ctx, 0, sizeof(*ctx));
1.51 + ctx->iface = iface;
1.52 + ctx->name = iface->name;
1.53 + ctx->priv = NULL;
1.54 + ctx->init_flags = flags;
1.55 + ctx->config.dec = cfg;
1.56 + res = VPX_CODEC_OK;
1.57 +
1.58 + if (!(flags & VPX_CODEC_USE_XMA)) {
1.59 + res = ctx->iface->init(ctx, NULL);
1.60 +
1.61 + if (res) {
1.62 + ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
1.63 + vpx_codec_destroy(ctx);
1.64 + }
1.65 +
1.66 + if (ctx->priv)
1.67 + ctx->priv->iface = ctx->iface;
1.68 + }
1.69 + }
1.70 +
1.71 + return SAVE_STATUS(ctx, res);
1.72 +}
1.73 +
1.74 +
1.75 +vpx_codec_err_t vpx_codec_peek_stream_info(vpx_codec_iface_t *iface,
1.76 + const uint8_t *data,
1.77 + unsigned int data_sz,
1.78 + vpx_codec_stream_info_t *si) {
1.79 + vpx_codec_err_t res;
1.80 +
1.81 + if (!iface || !data || !data_sz || !si
1.82 + || si->sz < sizeof(vpx_codec_stream_info_t))
1.83 + res = VPX_CODEC_INVALID_PARAM;
1.84 + else {
1.85 + /* Set default/unknown values */
1.86 + si->w = 0;
1.87 + si->h = 0;
1.88 +
1.89 + res = iface->dec.peek_si(data, data_sz, si);
1.90 + }
1.91 +
1.92 + return res;
1.93 +}
1.94 +
1.95 +
1.96 +vpx_codec_err_t vpx_codec_get_stream_info(vpx_codec_ctx_t *ctx,
1.97 + vpx_codec_stream_info_t *si) {
1.98 + vpx_codec_err_t res;
1.99 +
1.100 + if (!ctx || !si || si->sz < sizeof(vpx_codec_stream_info_t))
1.101 + res = VPX_CODEC_INVALID_PARAM;
1.102 + else if (!ctx->iface || !ctx->priv)
1.103 + res = VPX_CODEC_ERROR;
1.104 + else {
1.105 + /* Set default/unknown values */
1.106 + si->w = 0;
1.107 + si->h = 0;
1.108 +
1.109 + res = ctx->iface->dec.get_si(ctx->priv->alg_priv, si);
1.110 + }
1.111 +
1.112 + return SAVE_STATUS(ctx, res);
1.113 +}
1.114 +
1.115 +
1.116 +vpx_codec_err_t vpx_codec_decode(vpx_codec_ctx_t *ctx,
1.117 + const uint8_t *data,
1.118 + unsigned int data_sz,
1.119 + void *user_priv,
1.120 + long deadline) {
1.121 + vpx_codec_err_t res;
1.122 +
1.123 + /* Sanity checks */
1.124 + /* NULL data ptr allowed if data_sz is 0 too */
1.125 + if (!ctx || (!data && data_sz))
1.126 + res = VPX_CODEC_INVALID_PARAM;
1.127 + else if (!ctx->iface || !ctx->priv)
1.128 + res = VPX_CODEC_ERROR;
1.129 + else {
1.130 + res = ctx->iface->dec.decode(ctx->priv->alg_priv, data, data_sz,
1.131 + user_priv, deadline);
1.132 + }
1.133 +
1.134 + return SAVE_STATUS(ctx, res);
1.135 +}
1.136 +
1.137 +vpx_image_t *vpx_codec_get_frame(vpx_codec_ctx_t *ctx,
1.138 + vpx_codec_iter_t *iter) {
1.139 + vpx_image_t *img;
1.140 +
1.141 + if (!ctx || !iter || !ctx->iface || !ctx->priv)
1.142 + img = NULL;
1.143 + else
1.144 + img = ctx->iface->dec.get_frame(ctx->priv->alg_priv, iter);
1.145 +
1.146 + return img;
1.147 +}
1.148 +
1.149 +
1.150 +vpx_codec_err_t vpx_codec_register_put_frame_cb(vpx_codec_ctx_t *ctx,
1.151 + vpx_codec_put_frame_cb_fn_t cb,
1.152 + void *user_priv) {
1.153 + vpx_codec_err_t res;
1.154 +
1.155 + if (!ctx || !cb)
1.156 + res = VPX_CODEC_INVALID_PARAM;
1.157 + else if (!ctx->iface || !ctx->priv
1.158 + || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME))
1.159 + res = VPX_CODEC_ERROR;
1.160 + else {
1.161 + ctx->priv->dec.put_frame_cb.u.put_frame = cb;
1.162 + ctx->priv->dec.put_frame_cb.user_priv = user_priv;
1.163 + res = VPX_CODEC_OK;
1.164 + }
1.165 +
1.166 + return SAVE_STATUS(ctx, res);
1.167 +}
1.168 +
1.169 +
1.170 +vpx_codec_err_t vpx_codec_register_put_slice_cb(vpx_codec_ctx_t *ctx,
1.171 + vpx_codec_put_slice_cb_fn_t cb,
1.172 + void *user_priv) {
1.173 + vpx_codec_err_t res;
1.174 +
1.175 + if (!ctx || !cb)
1.176 + res = VPX_CODEC_INVALID_PARAM;
1.177 + else if (!ctx->iface || !ctx->priv
1.178 + || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME))
1.179 + res = VPX_CODEC_ERROR;
1.180 + else {
1.181 + ctx->priv->dec.put_slice_cb.u.put_slice = cb;
1.182 + ctx->priv->dec.put_slice_cb.user_priv = user_priv;
1.183 + res = VPX_CODEC_OK;
1.184 + }
1.185 +
1.186 + return SAVE_STATUS(ctx, res);
1.187 +}
1.188 +
1.189 +
1.190 +vpx_codec_err_t vpx_codec_get_mem_map(vpx_codec_ctx_t *ctx,
1.191 + vpx_codec_mmap_t *mmap,
1.192 + vpx_codec_iter_t *iter) {
1.193 + vpx_codec_err_t res = VPX_CODEC_OK;
1.194 +
1.195 + if (!ctx || !mmap || !iter || !ctx->iface)
1.196 + res = VPX_CODEC_INVALID_PARAM;
1.197 + else if (!(ctx->iface->caps & VPX_CODEC_CAP_XMA))
1.198 + res = VPX_CODEC_ERROR;
1.199 + else
1.200 + res = ctx->iface->get_mmap(ctx, mmap, iter);
1.201 +
1.202 + return SAVE_STATUS(ctx, res);
1.203 +}
1.204 +
1.205 +
1.206 +vpx_codec_err_t vpx_codec_set_mem_map(vpx_codec_ctx_t *ctx,
1.207 + vpx_codec_mmap_t *mmap,
1.208 + unsigned int num_maps) {
1.209 + vpx_codec_err_t res = VPX_CODEC_MEM_ERROR;
1.210 +
1.211 + if (!ctx || !mmap || !ctx->iface)
1.212 + res = VPX_CODEC_INVALID_PARAM;
1.213 + else if (!(ctx->iface->caps & VPX_CODEC_CAP_XMA))
1.214 + res = VPX_CODEC_ERROR;
1.215 + else {
1.216 + unsigned int i;
1.217 +
1.218 + for (i = 0; i < num_maps; i++, mmap++) {
1.219 + if (!mmap->base)
1.220 + break;
1.221 +
1.222 + /* Everything look ok, set the mmap in the decoder */
1.223 + res = ctx->iface->set_mmap(ctx, mmap);
1.224 +
1.225 + if (res)
1.226 + break;
1.227 + }
1.228 + }
1.229 +
1.230 + return SAVE_STATUS(ctx, res);
1.231 +}
