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/*
* 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_ERROR;
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);
}
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