Line data    Source code

       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 <stdarg.h>
      16             : #include <stdlib.h>
      17             : #include "vpx/vpx_integer.h"
      18             : #include "vpx/internal/vpx_codec_internal.h"
      19             : #include "vpx_version.h"
      20             : 
      21             : #define SAVE_STATUS(ctx, var) (ctx ? (ctx->err = var) : var)
      22             : 
      23           0 : int vpx_codec_version(void) { return VERSION_PACKED; }
      24             : 
      25           0 : const char *vpx_codec_version_str(void) { return VERSION_STRING_NOSP; }
      26             : 
      27           0 : const char *vpx_codec_version_extra_str(void) { return VERSION_EXTRA; }
      28             : 
      29           0 : const char *vpx_codec_iface_name(vpx_codec_iface_t *iface) {
      30           0 :   return iface ? iface->name : "<invalid interface>";
      31             : }
      32             : 
      33           0 : const char *vpx_codec_err_to_string(vpx_codec_err_t err) {
      34           0 :   switch (err) {
      35           0 :     case VPX_CODEC_OK: return "Success";
      36           0 :     case VPX_CODEC_ERROR: return "Unspecified internal error";
      37           0 :     case VPX_CODEC_MEM_ERROR: return "Memory allocation error";
      38           0 :     case VPX_CODEC_ABI_MISMATCH: return "ABI version mismatch";
      39             :     case VPX_CODEC_INCAPABLE:
      40           0 :       return "Codec does not implement requested capability";
      41             :     case VPX_CODEC_UNSUP_BITSTREAM:
      42           0 :       return "Bitstream not supported by this decoder";
      43             :     case VPX_CODEC_UNSUP_FEATURE:
      44           0 :       return "Bitstream required feature not supported by this decoder";
      45           0 :     case VPX_CODEC_CORRUPT_FRAME: return "Corrupt frame detected";
      46           0 :     case VPX_CODEC_INVALID_PARAM: return "Invalid parameter";
      47           0 :     case VPX_CODEC_LIST_END: return "End of iterated list";
      48             :   }
      49             : 
      50           0 :   return "Unrecognized error code";
      51             : }
      52             : 
      53           0 : const char *vpx_codec_error(vpx_codec_ctx_t *ctx) {
      54           0 :   return (ctx) ? vpx_codec_err_to_string(ctx->err)
      55           0 :                : vpx_codec_err_to_string(VPX_CODEC_INVALID_PARAM);
      56             : }
      57             : 
      58           0 : const char *vpx_codec_error_detail(vpx_codec_ctx_t *ctx) {
      59           0 :   if (ctx && ctx->err)
      60           0 :     return ctx->priv ? ctx->priv->err_detail : ctx->err_detail;
      61             : 
      62           0 :   return NULL;
      63             : }
      64             : 
      65           0 : vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx) {
      66             :   vpx_codec_err_t res;
      67             : 
      68           0 :   if (!ctx)
      69           0 :     res = VPX_CODEC_INVALID_PARAM;
      70           0 :   else if (!ctx->iface || !ctx->priv)
      71           0 :     res = VPX_CODEC_ERROR;
      72             :   else {
      73           0 :     ctx->iface->destroy((vpx_codec_alg_priv_t *)ctx->priv);
      74             : 
      75           0 :     ctx->iface = NULL;
      76           0 :     ctx->name = NULL;
      77           0 :     ctx->priv = NULL;
      78           0 :     res = VPX_CODEC_OK;
      79             :   }
      80             : 
      81           0 :   return SAVE_STATUS(ctx, res);
      82             : }
      83             : 
      84           0 : vpx_codec_caps_t vpx_codec_get_caps(vpx_codec_iface_t *iface) {
      85           0 :   return (iface) ? iface->caps : 0;
      86             : }
      87             : 
      88           0 : vpx_codec_err_t vpx_codec_control_(vpx_codec_ctx_t *ctx, int ctrl_id, ...) {
      89             :   vpx_codec_err_t res;
      90             : 
      91           0 :   if (!ctx || !ctrl_id)
      92           0 :     res = VPX_CODEC_INVALID_PARAM;
      93           0 :   else if (!ctx->iface || !ctx->priv || !ctx->iface->ctrl_maps)
      94           0 :     res = VPX_CODEC_ERROR;
      95             :   else {
      96             :     vpx_codec_ctrl_fn_map_t *entry;
      97             : 
      98           0 :     res = VPX_CODEC_INCAPABLE;
      99             : 
     100           0 :     for (entry = ctx->iface->ctrl_maps; entry && entry->fn; entry++) {
     101           0 :       if (!entry->ctrl_id || entry->ctrl_id == ctrl_id) {
     102             :         va_list ap;
     103             : 
     104           0 :         va_start(ap, ctrl_id);
     105           0 :         res = entry->fn((vpx_codec_alg_priv_t *)ctx->priv, ap);
     106           0 :         va_end(ap);
     107           0 :         break;
     108             :       }
     109             :     }
     110             :   }
     111             : 
     112           0 :   return SAVE_STATUS(ctx, res);
     113             : }
     114             : 
     115           0 : void vpx_internal_error(struct vpx_internal_error_info *info,
     116             :                         vpx_codec_err_t error, const char *fmt, ...) {
     117             :   va_list ap;
     118             : 
     119           0 :   info->error_code = error;
     120           0 :   info->has_detail = 0;
     121             : 
     122           0 :   if (fmt) {
     123           0 :     size_t sz = sizeof(info->detail);
     124             : 
     125           0 :     info->has_detail = 1;
     126           0 :     va_start(ap, fmt);
     127           0 :     vsnprintf(info->detail, sz - 1, fmt, ap);
     128           0 :     va_end(ap);
     129           0 :     info->detail[sz - 1] = '\0';
     130             :   }
     131             : 
     132           0 :   if (info->setjmp) longjmp(info->jmp, info->error_code);
     133           0 : }