1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 /*!\file 12 * \brief Provides the high level interface to wrap decoder algorithms. 13 * 14 */ 15 #include <string.h> 16 #include "vpx/internal/vpx_codec_internal.h" 17 18 #define SAVE_STATUS(ctx, var) (ctx ? (ctx->err = var) : var) 19 20 static vpx_codec_alg_priv_t *get_alg_priv(vpx_codec_ctx_t *ctx) { 21 return (vpx_codec_alg_priv_t *)ctx->priv; 22 } 23 24 vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t *ctx, 25 vpx_codec_iface_t *iface, 26 const vpx_codec_dec_cfg_t *cfg, 27 vpx_codec_flags_t flags, int ver) { 28 vpx_codec_err_t res; 29 30 if (ver != VPX_DECODER_ABI_VERSION) 31 res = VPX_CODEC_ABI_MISMATCH; 32 else if (!ctx || !iface) 33 res = VPX_CODEC_INVALID_PARAM; 34 else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION) 35 res = VPX_CODEC_ABI_MISMATCH; 36 else if ((flags & VPX_CODEC_USE_POSTPROC) && 37 !(iface->caps & VPX_CODEC_CAP_POSTPROC)) 38 res = VPX_CODEC_INCAPABLE; 39 else if ((flags & VPX_CODEC_USE_ERROR_CONCEALMENT) && 40 !(iface->caps & VPX_CODEC_CAP_ERROR_CONCEALMENT)) 41 res = VPX_CODEC_INCAPABLE; 42 else if ((flags & VPX_CODEC_USE_INPUT_FRAGMENTS) && 43 !(iface->caps & VPX_CODEC_CAP_INPUT_FRAGMENTS)) 44 res = VPX_CODEC_INCAPABLE; 45 else if (!(iface->caps & VPX_CODEC_CAP_DECODER)) 46 res = VPX_CODEC_INCAPABLE; 47 else { 48 memset(ctx, 0, sizeof(*ctx)); 49 ctx->iface = iface; 50 ctx->name = iface->name; 51 ctx->priv = NULL; 52 ctx->init_flags = flags; 53 ctx->config.dec = cfg; 54 55 res = ctx->iface->init(ctx, NULL); 56 if (res) { 57 ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL; 58 vpx_codec_destroy(ctx); 59 } 60 } 61 62 return SAVE_STATUS(ctx, res); 63 } 64 65 vpx_codec_err_t vpx_codec_peek_stream_info(vpx_codec_iface_t *iface, 66 const uint8_t *data, 67 unsigned int data_sz, 68 vpx_codec_stream_info_t *si) { 69 vpx_codec_err_t res; 70 71 if (!iface || !data || !data_sz || !si || 72 si->sz < sizeof(vpx_codec_stream_info_t)) 73 res = VPX_CODEC_INVALID_PARAM; 74 else { 75 /* Set default/unknown values */ 76 si->w = 0; 77 si->h = 0; 78 79 res = iface->dec.peek_si(data, data_sz, si); 80 } 81 82 return res; 83 } 84 85 vpx_codec_err_t vpx_codec_get_stream_info(vpx_codec_ctx_t *ctx, 86 vpx_codec_stream_info_t *si) { 87 vpx_codec_err_t res; 88 89 if (!ctx || !si || si->sz < sizeof(vpx_codec_stream_info_t)) 90 res = VPX_CODEC_INVALID_PARAM; 91 else if (!ctx->iface || !ctx->priv) 92 res = VPX_CODEC_ERROR; 93 else { 94 /* Set default/unknown values */ 95 si->w = 0; 96 si->h = 0; 97 98 res = ctx->iface->dec.get_si(get_alg_priv(ctx), si); 99 } 100 101 return SAVE_STATUS(ctx, res); 102 } 103 104 vpx_codec_err_t vpx_codec_decode(vpx_codec_ctx_t *ctx, const uint8_t *data, 105 unsigned int data_sz, void *user_priv, 106 long deadline) { 107 vpx_codec_err_t res; 108 109 /* Sanity checks */ 110 /* NULL data ptr allowed if data_sz is 0 too */ 111 if (!ctx || (!data && data_sz) || (data && !data_sz)) 112 res = VPX_CODEC_INVALID_PARAM; 113 else if (!ctx->iface || !ctx->priv) 114 res = VPX_CODEC_ERROR; 115 else { 116 res = ctx->iface->dec.decode(get_alg_priv(ctx), data, data_sz, user_priv, 117 deadline); 118 } 119 120 return SAVE_STATUS(ctx, res); 121 } 122 123 vpx_image_t *vpx_codec_get_frame(vpx_codec_ctx_t *ctx, vpx_codec_iter_t *iter) { 124 vpx_image_t *img; 125 126 if (!ctx || !iter || !ctx->iface || !ctx->priv) 127 img = NULL; 128 else 129 img = ctx->iface->dec.get_frame(get_alg_priv(ctx), iter); 130 131 return img; 132 } 133 134 vpx_codec_err_t vpx_codec_register_put_frame_cb(vpx_codec_ctx_t *ctx, 135 vpx_codec_put_frame_cb_fn_t cb, 136 void *user_priv) { 137 vpx_codec_err_t res; 138 139 if (!ctx || !cb) 140 res = VPX_CODEC_INVALID_PARAM; 141 else if (!ctx->iface || !ctx->priv || 142 !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME)) 143 res = VPX_CODEC_ERROR; 144 else { 145 ctx->priv->dec.put_frame_cb.u.put_frame = cb; 146 ctx->priv->dec.put_frame_cb.user_priv = user_priv; 147 res = VPX_CODEC_OK; 148 } 149 150 return SAVE_STATUS(ctx, res); 151 } 152 153 vpx_codec_err_t vpx_codec_register_put_slice_cb(vpx_codec_ctx_t *ctx, 154 vpx_codec_put_slice_cb_fn_t cb, 155 void *user_priv) { 156 vpx_codec_err_t res; 157 158 if (!ctx || !cb) 159 res = VPX_CODEC_INVALID_PARAM; 160 else if (!ctx->iface || !ctx->priv || 161 !(ctx->iface->caps & VPX_CODEC_CAP_PUT_SLICE)) 162 res = VPX_CODEC_ERROR; 163 else { 164 ctx->priv->dec.put_slice_cb.u.put_slice = cb; 165 ctx->priv->dec.put_slice_cb.user_priv = user_priv; 166 res = VPX_CODEC_OK; 167 } 168 169 return SAVE_STATUS(ctx, res); 170 } 171 172 vpx_codec_err_t vpx_codec_set_frame_buffer_functions( 173 vpx_codec_ctx_t *ctx, vpx_get_frame_buffer_cb_fn_t cb_get, 174 vpx_release_frame_buffer_cb_fn_t cb_release, void *cb_priv) { 175 vpx_codec_err_t res; 176 177 if (!ctx || !cb_get || !cb_release) { 178 res = VPX_CODEC_INVALID_PARAM; 179 } else if (!ctx->iface || !ctx->priv || 180 !(ctx->iface->caps & VPX_CODEC_CAP_EXTERNAL_FRAME_BUFFER)) { 181 res = VPX_CODEC_ERROR; 182 } else { 183 res = ctx->iface->dec.set_fb_fn(get_alg_priv(ctx), cb_get, cb_release, 184 cb_priv); 185 } 186 187 return SAVE_STATUS(ctx, res); 188 } 189
