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 <stdio.h>
17 #include <stdlib.h>
18 #include "vpx/vpx_integer.h"
19 #include "vpx/internal/vpx_codec_internal.h"
20 #include "vpx_version.h"
21
22 #define SAVE_STATUS(ctx, var) (ctx ? (ctx->err = var) : var)
23
vpx_codec_version(void)24 int vpx_codec_version(void) { return VERSION_PACKED; }
25
vpx_codec_version_str(void)26 const char *vpx_codec_version_str(void) { return VERSION_STRING_NOSP; }
27
vpx_codec_version_extra_str(void)28 const char *vpx_codec_version_extra_str(void) { return VERSION_EXTRA; }
29
vpx_codec_iface_name(vpx_codec_iface_t * iface)30 const char *vpx_codec_iface_name(vpx_codec_iface_t *iface) {
31 return iface ? iface->name : "<invalid interface>";
32 }
33
vpx_codec_err_to_string(vpx_codec_err_t err)34 const char *vpx_codec_err_to_string(vpx_codec_err_t err) {
35 switch (err) {
36 case VPX_CODEC_OK: return "Success";
37 case VPX_CODEC_ERROR: return "Unspecified internal error";
38 case VPX_CODEC_MEM_ERROR: return "Memory allocation error";
39 case VPX_CODEC_ABI_MISMATCH: return "ABI version mismatch";
40 case VPX_CODEC_INCAPABLE:
41 return "Codec does not implement requested capability";
42 case VPX_CODEC_UNSUP_BITSTREAM:
43 return "Bitstream not supported by this decoder";
44 case VPX_CODEC_UNSUP_FEATURE:
45 return "Bitstream required feature not supported by this decoder";
46 case VPX_CODEC_CORRUPT_FRAME: return "Corrupt frame detected";
47 case VPX_CODEC_INVALID_PARAM: return "Invalid parameter";
48 case VPX_CODEC_LIST_END: return "End of iterated list";
49 }
50
51 return "Unrecognized error code";
52 }
53
vpx_codec_error(const vpx_codec_ctx_t * ctx)54 const char *vpx_codec_error(const vpx_codec_ctx_t *ctx) {
55 return (ctx) ? vpx_codec_err_to_string(ctx->err)
56 : vpx_codec_err_to_string(VPX_CODEC_INVALID_PARAM);
57 }
58
vpx_codec_error_detail(const vpx_codec_ctx_t * ctx)59 const char *vpx_codec_error_detail(const vpx_codec_ctx_t *ctx) {
60 if (ctx && ctx->err)
61 return ctx->priv ? ctx->priv->err_detail : ctx->err_detail;
62
63 return NULL;
64 }
65
vpx_codec_destroy(vpx_codec_ctx_t * ctx)66 vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx) {
67 vpx_codec_err_t res;
68
69 if (!ctx)
70 res = VPX_CODEC_INVALID_PARAM;
71 else if (!ctx->iface || !ctx->priv)
72 res = VPX_CODEC_ERROR;
73 else {
74 ctx->iface->destroy((vpx_codec_alg_priv_t *)ctx->priv);
75
76 ctx->iface = NULL;
77 ctx->name = NULL;
78 ctx->priv = NULL;
79 res = VPX_CODEC_OK;
80 }
81
82 return SAVE_STATUS(ctx, res);
83 }
84
vpx_codec_get_caps(vpx_codec_iface_t * iface)85 vpx_codec_caps_t vpx_codec_get_caps(vpx_codec_iface_t *iface) {
86 return iface ? iface->caps : 0;
87 }
88
vpx_codec_control_(vpx_codec_ctx_t * ctx,int ctrl_id,...)89 vpx_codec_err_t vpx_codec_control_(vpx_codec_ctx_t *ctx, int ctrl_id, ...) {
90 vpx_codec_err_t res;
91
92 if (!ctx || !ctrl_id)
93 res = VPX_CODEC_INVALID_PARAM;
94 else if (!ctx->iface || !ctx->priv || !ctx->iface->ctrl_maps)
95 res = VPX_CODEC_ERROR;
96 else {
97 vpx_codec_ctrl_fn_map_t *entry;
98
99 res = VPX_CODEC_INCAPABLE;
100
101 for (entry = ctx->iface->ctrl_maps; entry->fn; entry++) {
102 if (!entry->ctrl_id || entry->ctrl_id == ctrl_id) {
103 va_list ap;
104
105 va_start(ap, ctrl_id);
106 res = entry->fn((vpx_codec_alg_priv_t *)ctx->priv, ap);
107 va_end(ap);
108 break;
109 }
110 }
111 }
112
113 return SAVE_STATUS(ctx, res);
114 }
115
vpx_internal_error(struct vpx_internal_error_info * info,vpx_codec_err_t error,const char * fmt,...)116 void vpx_internal_error(struct vpx_internal_error_info *info,
117 vpx_codec_err_t error, const char *fmt, ...) {
118 va_list ap;
119
120 info->error_code = error;
121 info->has_detail = 0;
122
123 if (fmt) {
124 size_t sz = sizeof(info->detail);
125
126 info->has_detail = 1;
127 va_start(ap, fmt);
128 vsnprintf(info->detail, sz - 1, fmt, ap);
129 va_end(ap);
130 info->detail[sz - 1] = '\0';
131 }
132
133 if (info->setjmp) longjmp(info->jmp, info->error_code);
134 }
135