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lavc: Deprecate av_hwaccel_next() and av_register_hwaccel()

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This commit is contained in:
Mark Thompson 2017-10-26 00:18:44 +01:00
parent 67e81d79cc
commit 3536a3efb9
4 changed files with 27 additions and 14 deletions
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4
doc/APIchanges
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@ -15,6 +15,10 @@ libavutil: 2017-10-21
API changes, most recent first:
2017-11-xx - xxxxxxx - lavc 58.5.100 - avcodec.h
Deprecate user visibility of the AVHWAccel structure and the functions
av_register_hwaccel() and av_hwaccel_next().
2017-11-xx - xxxxxxx - lavc 58.4.100 - avcodec.h
Add AVCodecHWConfig and avcodec_get_hw_config().

14
libavcodec/avcodec.h
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@ -3489,6 +3489,10 @@ const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index);
/**
* @defgroup lavc_hwaccel AVHWAccel
*
* @note Nothing in this structure should be accessed by the user. At some
* point in future it will not be externally visible at all.
*
* @{
*/
typedef struct AVHWAccel {
@ -3533,7 +3537,6 @@ typedef struct AVHWAccel {
* New public fields should be added right above.
*****************************************************************
*/
struct AVHWAccel *next;
/**
* Allocate a custom buffer
@ -5874,17 +5877,26 @@ void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size);
*/
unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
#if FF_API_USER_VISIBLE_AVHWACCEL
/**
* Register the hardware accelerator hwaccel.
*
* @deprecated This function doesn't do anything.
*/
attribute_deprecated
void av_register_hwaccel(AVHWAccel *hwaccel);
/**
* If hwaccel is NULL, returns the first registered hardware accelerator,
* if hwaccel is non-NULL, returns the next registered hardware accelerator
* after hwaccel, or NULL if hwaccel is the last one.
*
* @deprecated AVHWaccel structures contain no user-serviceable parts, so
* this function should not be used.
*/
attribute_deprecated
AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel);
#endif
/**

18
libavcodec/utils.c
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@ -1898,22 +1898,16 @@ const AVCodecHWConfig *avcodec_get_hw_config(const AVCodec *codec, int index)
return &codec->hw_configs[index]->public;
}
static AVHWAccel *first_hwaccel = NULL;
static AVHWAccel **last_hwaccel = &first_hwaccel;
#if FF_API_USER_VISIBLE_AVHWACCEL
AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
{
return NULL;
}
void av_register_hwaccel(AVHWAccel *hwaccel)
{
AVHWAccel **p = last_hwaccel;
hwaccel->next = NULL;
while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
p = &(*p)->next;
last_hwaccel = &hwaccel->next;
}
AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel)
{
return hwaccel ? hwaccel->next : first_hwaccel;
}
#endif
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
{

5
libavcodec/version.h
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@ -28,7 +28,7 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 58
#define LIBAVCODEC_VERSION_MINOR 4
#define LIBAVCODEC_VERSION_MINOR 5
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
@ -123,6 +123,9 @@
#ifndef FF_API_CODEC_GET_SET
#define FF_API_CODEC_GET_SET (LIBAVCODEC_VERSION_MAJOR < 59)
#endif
#ifndef FF_API_USER_VISIBLE_AVHWACCEL
#define FF_API_USER_VISIBLE_AVHWACCEL (LIBAVCODEC_VERSION_MAJOR < 59)
#endif
#endif /* AVCODEC_VERSION_H */