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vpx_codec.h
Go to the documentation of this file.
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
39 #ifndef VPX_VPX_CODEC_H_
40 #define VPX_VPX_CODEC_H_
41
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45
46 #include "./vpx_integer.h"
47 #include "./vpx_image.h"
48
50 #ifndef DEPRECATED
51 #if defined(__GNUC__) && __GNUC__
52 #define DEPRECATED __attribute__ ((deprecated))
53 #elif defined(_MSC_VER)
54 #define DEPRECATED
55 #else
56 #define DEPRECATED
57 #endif
58 #endif /* DEPRECATED */
59
60 #ifndef DECLSPEC_DEPRECATED
61 #if defined(__GNUC__) && __GNUC__
62 #define DECLSPEC_DEPRECATED
63 #elif defined(_MSC_VER)
64 #define DECLSPEC_DEPRECATED __declspec(deprecated)
65 #else
66 #define DECLSPEC_DEPRECATED
67 #endif
68 #endif /* DECLSPEC_DEPRECATED */
69
71 #ifdef UNUSED
72 #elif __GNUC__
73 #define UNUSED __attribute__ ((unused))
74 #else
75 #define UNUSED
76 #endif
77
86 #define VPX_CODEC_ABI_VERSION (3 + VPX_IMAGE_ABI_VERSION)
89 typedef enum {
90
91 VPX_CODEC_OK,
92
94 VPX_CODEC_ERROR,
95
97 VPX_CODEC_MEM_ERROR,
98
100 VPX_CODEC_ABI_MISMATCH,
101
103 VPX_CODEC_INCAPABLE,
104
110 VPX_CODEC_UNSUP_BITSTREAM,
111
119 VPX_CODEC_UNSUP_FEATURE,
120
129 VPX_CODEC_CORRUPT_FRAME,
130
134 VPX_CODEC_INVALID_PARAM,
135
139 VPX_CODEC_LIST_END
140
141 }
142 vpx_codec_err_t;
143
144
153 typedef long vpx_codec_caps_t;
154 #define VPX_CODEC_CAP_DECODER 0x1
155 #define VPX_CODEC_CAP_ENCODER 0x2
165 typedef long vpx_codec_flags_t;
166
167
173 typedef const struct vpx_codec_iface vpx_codec_iface_t;
174
175
181 typedef struct vpx_codec_priv vpx_codec_priv_t;
182
183
188 typedef const void *vpx_codec_iter_t;
189
190
199 typedef struct vpx_codec_ctx {
200 const char *name;
201 vpx_codec_iface_t *iface;
202 vpx_codec_err_t err;
203 const char *err_detail;
204 vpx_codec_flags_t init_flags;
205 union {
207 const struct vpx_codec_dec_cfg *dec;
209 const struct vpx_codec_enc_cfg *enc;
210 const void *raw;
211 } config;
212 vpx_codec_priv_t *priv;
213 } vpx_codec_ctx_t;
214
219 typedef enum vpx_bit_depth {
220 VPX_BITS_8 = 8,
221 VPX_BITS_10 = 10,
222 VPX_BITS_12 = 12,
223 } vpx_bit_depth_t;
224
225 /*
226 * Library Version Number Interface
227 *
228 * For example, see the following sample return values:
229 * vpx_codec_version() (1<<16 | 2<<8 | 3)
230 * vpx_codec_version_str() "v1.2.3-rc1-16-gec6a1ba"
231 * vpx_codec_version_extra_str() "rc1-16-gec6a1ba"
232 */
233
242 int vpx_codec_version(void);
243 #define VPX_VERSION_MAJOR(v) ((v>>16)&0xff)
244 #define VPX_VERSION_MINOR(v) ((v>>8)&0xff)
245 #define VPX_VERSION_PATCH(v) ((v>>0)&0xff)
248 #define vpx_codec_version_major() ((vpx_codec_version()>>16)&0xff)
249
251 #define vpx_codec_version_minor() ((vpx_codec_version()>>8)&0xff)
252
254 #define vpx_codec_version_patch() ((vpx_codec_version()>>0)&0xff)
255
256
264 const char *vpx_codec_version_str(void);
265
266
273 const char *vpx_codec_version_extra_str(void);
274
275
282 const char *vpx_codec_build_config(void);
283
284
292 const char *vpx_codec_iface_name(vpx_codec_iface_t *iface);
293
294
305 const char *vpx_codec_err_to_string(vpx_codec_err_t err);
306
307
318 const char *vpx_codec_error(vpx_codec_ctx_t *ctx);
319
320
331 const char *vpx_codec_error_detail(vpx_codec_ctx_t *ctx);
332
333
334 /* REQUIRED FUNCTIONS
335 *
336 * The following functions are required to be implemented for all codecs.
337 * They represent the base case functionality expected of all codecs.
338 */
339
351 vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx);
352
353
361 vpx_codec_caps_t vpx_codec_get_caps(vpx_codec_iface_t *iface);
362
363
388 vpx_codec_err_t vpx_codec_control_(vpx_codec_ctx_t *ctx,
389 int ctrl_id,
390 ...);
391 #if defined(VPX_DISABLE_CTRL_TYPECHECKS) && VPX_DISABLE_CTRL_TYPECHECKS
392 # define vpx_codec_control(ctx,id,data) vpx_codec_control_(ctx,id,data)
393 # define VPX_CTRL_USE_TYPE(id, typ)
394 # define VPX_CTRL_USE_TYPE_DEPRECATED(id, typ)
395 # define VPX_CTRL_VOID(id, typ)
396
397 #else
398
407 # define vpx_codec_control(ctx,id,data) vpx_codec_control_##id(ctx,id,data)\
408
422 # define VPX_CTRL_USE_TYPE(id, typ) \
423 static vpx_codec_err_t \
424 vpx_codec_control_##id(vpx_codec_ctx_t*, int, typ) UNUSED;\
425 \
426 static vpx_codec_err_t \
427 vpx_codec_control_##id(vpx_codec_ctx_t *ctx, int ctrl_id, typ data) {\
428 return vpx_codec_control_(ctx, ctrl_id, data);\
429 }
442 # define VPX_CTRL_USE_TYPE_DEPRECATED(id, typ) \
443 DECLSPEC_DEPRECATED static vpx_codec_err_t \
444 vpx_codec_control_##id(vpx_codec_ctx_t*, int, typ) DEPRECATED UNUSED;\
445 \
446 DECLSPEC_DEPRECATED static vpx_codec_err_t \
447 vpx_codec_control_##id(vpx_codec_ctx_t *ctx, int ctrl_id, typ data) {\
448 return vpx_codec_control_(ctx, ctrl_id, data);\
449 }
462 # define VPX_CTRL_VOID(id) \
463 static vpx_codec_err_t \
464 vpx_codec_control_##id(vpx_codec_ctx_t*, int) UNUSED;\
465 \
466 static vpx_codec_err_t \
467 vpx_codec_control_##id(vpx_codec_ctx_t *ctx, int ctrl_id) {\
468 return vpx_codec_control_(ctx, ctrl_id);\
469 }
472 #endif
473
475 #ifdef __cplusplus
476 }
477 #endif
478 #endif // VPX_VPX_CODEC_H_
479
vpx_codec_iface_name
const char * vpx_codec_iface_name(vpx_codec_iface_t *iface)
Return the name for a given interface.
vpx_codec_err_to_string
const char * vpx_codec_err_to_string(vpx_codec_err_t err)
Convert error number to printable string.
vpx_codec_ctx::init_flags
vpx_codec_flags_t init_flags
Definition: vpx_codec.h:204
VPX_CODEC_ERROR
Unspecified error.
Definition: vpx_codec.h:94
VPX_CODEC_UNSUP_BITSTREAM
The given bitstream is not supported.
Definition: vpx_codec.h:110
VPX_CODEC_MEM_ERROR
Memory operation failed.
Definition: vpx_codec.h:97
vpx_codec_enc_cfg
Encoder configuration structure.
Definition: vpx_encoder.h:311
VPX_CODEC_CORRUPT_FRAME
The coded data for this stream is corrupt or incomplete.
Definition: vpx_codec.h:129
vpx_codec_version
int vpx_codec_version(void)
Return the version information (as an integer)
VPX_CODEC_INVALID_PARAM
An application-supplied parameter is not valid.
Definition: vpx_codec.h:134
vpx_codec_version_extra_str
const char * vpx_codec_version_extra_str(void)
Return the version information (as a string)
vpx_codec_build_config
const char * vpx_codec_build_config(void)
Return the build configuration.
vpx_codec_ctx::name
const char * name
Definition: vpx_codec.h:200
vpx_bit_depth_t
enum vpx_bit_depth vpx_bit_depth_t
Bit depth for codecThis enumeration determines the bit depth of the codec.
vpx_codec_get_caps
vpx_codec_caps_t vpx_codec_get_caps(vpx_codec_iface_t *iface)
Get the capabilities of an algorithm.
VPX_CODEC_OK
Operation completed without error.
Definition: vpx_codec.h:91
vpx_codec_ctx_t
struct vpx_codec_ctx vpx_codec_ctx_t
Codec context structure.
vpx_bit_depth
vpx_bit_depth
Bit depth for codecThis enumeration determines the bit depth of the codec.
Definition: vpx_codec.h:219
vpx_codec_ctx::iface
vpx_codec_iface_t * iface
Definition: vpx_codec.h:201
vpx_image.h
Describes the vpx image descriptor and associated operations.
vpx_codec_iface_t
const struct vpx_codec_iface vpx_codec_iface_t
Codec interface structure.
Definition: vpx_codec.h:173
VPX_BITS_12
Definition: vpx_codec.h:222
vpx_codec_flags_t
long vpx_codec_flags_t
Initialization-time Feature Enabling.
Definition: vpx_codec.h:165
vpx_codec_ctx::err_detail
const char * err_detail
Definition: vpx_codec.h:203
vpx_codec_error_detail
const char * vpx_codec_error_detail(vpx_codec_ctx_t *ctx)
Retrieve detailed error information for codec context.
vpx_codec_version_str
const char * vpx_codec_version_str(void)
Return the version information (as a string)
vpx_codec_err_t
vpx_codec_err_t
Algorithm return codes.
Definition: vpx_codec.h:89
vpx_codec_priv_t
struct vpx_codec_priv vpx_codec_priv_t
Codec private data structure.
Definition: vpx_codec.h:181
VPX_CODEC_UNSUP_FEATURE
Encoded bitstream uses an unsupported feature.
Definition: vpx_codec.h:119
VPX_CODEC_ABI_MISMATCH
ABI version mismatch.
Definition: vpx_codec.h:100
vpx_codec_control_
vpx_codec_err_t vpx_codec_control_(vpx_codec_ctx_t *ctx, int ctrl_id,...)
Control algorithm.
vpx_codec_ctx::config
union vpx_codec_ctx::@0 config
VPX_CODEC_LIST_END
An iterator reached the end of list.
Definition: vpx_codec.h:139
vpx_codec_ctx::priv
vpx_codec_priv_t * priv
Definition: vpx_codec.h:212
vpx_codec_ctx::dec
const struct vpx_codec_dec_cfg * dec
Definition: vpx_codec.h:207
vpx_codec_destroy
vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx)
Destroy a codec instance.
vpx_codec_caps_t
long vpx_codec_caps_t
Codec capabilities bitfield.
Definition: vpx_codec.h:153
VPX_BITS_8
Definition: vpx_codec.h:220
VPX_CODEC_INCAPABLE
Algorithm does not have required capability.
Definition: vpx_codec.h:103
vpx_codec_ctx::err
vpx_codec_err_t err
Definition: vpx_codec.h:202
vpx_codec_error
const char * vpx_codec_error(vpx_codec_ctx_t *ctx)
Retrieve error synopsis for codec context.
vpx_codec_dec_cfg
Initialization Configurations.
Definition: vpx_decoder.h:115
VPX_BITS_10
Definition: vpx_codec.h:221
vpx_codec_iter_t
const void * vpx_codec_iter_t
Iterator.
Definition: vpx_codec.h:188
vpx_codec_ctx
Codec context structure.
Definition: vpx_codec.h:199