ref: a099d24707eda87a9c303c340aed2c00b3982723
dir: /vpx/src/vpx_codec.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 <stdarg.h> #include <stdlib.h> #include "vpx/vpx_integer.h" #include "vpx/internal/vpx_codec_internal.h" #include "vpx_version.h" #define SAVE_STATUS(ctx, var) (ctx ? (ctx->err = var) : var) int vpx_codec_version(void) { return VERSION_PACKED; } const char *vpx_codec_version_str(void) { return VERSION_STRING_NOSP; } const char *vpx_codec_version_extra_str(void) { return VERSION_EXTRA; } const char *vpx_codec_iface_name(vpx_codec_iface_t *iface) { return iface ? iface->name : "<invalid interface>"; } const char *vpx_codec_err_to_string(vpx_codec_err_t err) { switch (err) { case VPX_CODEC_OK: return "Success"; case VPX_CODEC_ERROR: return "Unspecified internal error"; case VPX_CODEC_MEM_ERROR: return "Memory allocation error"; case VPX_CODEC_ABI_MISMATCH: return "ABI version mismatch"; case VPX_CODEC_INCAPABLE: return "Codec does not implement requested capability"; case VPX_CODEC_UNSUP_BITSTREAM: return "Bitstream not supported by this decoder"; case VPX_CODEC_UNSUP_FEATURE: return "Bitstream required feature not supported by this decoder"; case VPX_CODEC_CORRUPT_FRAME: return "Corrupt frame detected"; case VPX_CODEC_INVALID_PARAM: return "Invalid parameter"; case VPX_CODEC_LIST_END: return "End of iterated list"; } return "Unrecognized error code"; } const char *vpx_codec_error(vpx_codec_ctx_t *ctx) { return (ctx) ? vpx_codec_err_to_string(ctx->err) : vpx_codec_err_to_string(VPX_CODEC_INVALID_PARAM); } const char *vpx_codec_error_detail(vpx_codec_ctx_t *ctx) { if (ctx && ctx->err) return ctx->priv ? ctx->priv->err_detail : ctx->err_detail; return NULL; } vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx) { vpx_codec_err_t res; if (!ctx) res = VPX_CODEC_INVALID_PARAM; else if (!ctx->iface || !ctx->priv) res = VPX_CODEC_ERROR; else { ctx->iface->destroy((vpx_codec_alg_priv_t *)ctx->priv); ctx->iface = NULL; ctx->name = NULL; ctx->priv = NULL; res = VPX_CODEC_OK; } return SAVE_STATUS(ctx, res); } vpx_codec_caps_t vpx_codec_get_caps(vpx_codec_iface_t *iface) { return (iface) ? iface->caps : 0; } vpx_codec_err_t vpx_codec_control_(vpx_codec_ctx_t *ctx, int ctrl_id, ...) { vpx_codec_err_t res; if (!ctx || !ctrl_id) res = VPX_CODEC_INVALID_PARAM; else if (!ctx->iface || !ctx->priv || !ctx->iface->ctrl_maps) res = VPX_CODEC_ERROR; else { vpx_codec_ctrl_fn_map_t *entry; res = VPX_CODEC_INCAPABLE; for (entry = ctx->iface->ctrl_maps; entry && entry->fn; entry++) { if (!entry->ctrl_id || entry->ctrl_id == ctrl_id) { va_list ap; va_start(ap, ctrl_id); res = entry->fn((vpx_codec_alg_priv_t *)ctx->priv, ap); va_end(ap); break; } } } return SAVE_STATUS(ctx, res); } void vpx_internal_error(struct vpx_internal_error_info *info, vpx_codec_err_t error, const char *fmt, ...) { va_list ap; info->error_code = error; info->has_detail = 0; if (fmt) { size_t sz = sizeof(info->detail); info->has_detail = 1; va_start(ap, fmt); vsnprintf(info->detail, sz - 1, fmt, ap); va_end(ap); info->detail[sz - 1] = '\0'; } if (info->setjmp) longjmp(info->jmp, info->error_code); }