diff mbox

[FFmpeg-devel,v2,1/6] lavc: add new API for iterating codecs and codec parsers

Message ID 20180103004236.f5bd3d2c0aa683ba6702d09d@itanimul.li
State Superseded
Headers show

Commit Message

Josh Dekker Jan. 3, 2018, 12:42 a.m. UTC 
Also replace linked list with an array.
---
 configure              |   12 +-
 doc/APIchanges         |    4 +
 libavcodec/allcodecs.c | 1473 ++++++++++++++++++++++++++++--------------------
 libavcodec/avcodec.h   |   31 +
 libavcodec/parser.c    |   87 ++-
 libavcodec/utils.c     |  105 ----
 libavcodec/version.h   |    3 +
 7 files changed, 974 insertions(+), 741 deletions(-)

Comments

wm4 Jan. 3, 2018, 3:25 p.m. UTC | #1 
On Wed, 3 Jan 2018 00:42:36 +0000
Josh de Kock <josh@itanimul.li> wrote:

> Also replace linked list with an array.
> ---
>  configure              |   12 +-
>  doc/APIchanges         |    4 +
>  libavcodec/allcodecs.c | 1473 ++++++++++++++++++++++++++++--------------------
>  libavcodec/avcodec.h   |   31 +
>  libavcodec/parser.c    |   87 ++-
>  libavcodec/utils.c     |  105 ----
>  libavcodec/version.h   |    3 +
>  7 files changed, 974 insertions(+), 741 deletions(-)
> 

> +#if CONFIG_ME_CMP
> +#include "me_cmp.h"
> +#endif
> +
> +pthread_once_t av_codec_static_init = PTHREAD_ONCE_INIT;
> +static void av_codec_init_static(void)
> +{
> +#if CONFIG_ME_CMP
> +    ff_me_cmp_init_static();
> +#endif

(This should probably be moved away, since it doesn't really have to do
with any of this - it's just a global init in the wrong place. But I
won't insist that this gets cleaned up now. Someone else can do it
later.)

> +    for (int i = 0; codec_list[i]; i++) {
> +        if (codec_list[i]->init_static_data)
> +            codec_list[i]->init_static_data((AVCodec*)codec_list[i]);
>      }
> +}
> +
> +const AVCodec *av_codec_iterate(void **opaque)
> +{
> +    uintptr_t i = (uintptr_t)*opaque;
> +    const AVCodec *c = codec_list[i];
> +
> +    pthread_once(&av_codec_static_init, av_codec_init_static);

One issue: you need to use ff_thread_once() everywhere (it uses a
different initializer type too). The reason is because if it's built
without threads, pthread_once() will not be defined.

Same for all other uses of this.

>  
> -#define REGISTER_ENCDEC(X, x) REGISTER_ENCODER(X, x); REGISTER_DECODER(X, x)
> +    if (c)
> +        *opaque = (void*)(i + 1);
>  
> -#define REGISTER_PARSER(X, x)                                           \
> -    {                                                                   \
> -        extern AVCodecParser ff_##x##_parser;                           \
> -        if (CONFIG_##X##_PARSER)                                        \
> -            av_register_codec_parser(&ff_##x##_parser);                 \
> +    return c;
> +}
> +
> +#if FF_API_NEXT
> +pthread_once_t av_codec_next_init = PTHREAD_ONCE_INIT;
> +
> +static void av_codec_init_next(void)
> +{
> +    AVCodec *prev = NULL, *p;
> +    void *i = 0;
> +    while ((p = (AVCodec*)av_codec_iterate(&i))) {
> +        if (prev)
> +            prev->next = p;
> +        prev = p;
>      }

> +    if (prev)
> +        prev->next = NULL;

What's this for? Isn't it already initialized to NULL?

> +}
> +
>  
> -static void register_all(void)
> +
> +av_cold void avcodec_register(AVCodec *codec)
>  {
> -    /* video codecs */
> -    REGISTER_ENCODER(A64MULTI,          a64multi);

> +    pthread_once(&av_codec_next_init, av_codec_init_next);
> +}

I don't see much of a point in this call. Could be dropped, so the body
is empty.

> +AVCodec *av_codec_next(const AVCodec *c)
> +{
> +    pthread_once(&av_codec_next_init, av_codec_init_next);
> +
> +    if (c)
> +        return c->next;
> +    else
> +        return (AVCodec*)codec_list[0];
>  }
>  
>  void avcodec_register_all(void)
>  {
> -    static AVOnce control = AV_ONCE_INIT;
> +    pthread_once(&av_codec_next_init, av_codec_init_next);
> +}

So that means if you use the legacy API, you still need to call
the register function. Strange choice, but I'm fine with it.

> +#endif
> +
> +static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
> +{
> +    switch(id){
> +        //This is for future deprecatec codec ids, its empty since
> +        //last major bump but will fill up again over time, please don't remove it
> +        default                                         : return id;
> +    }
> +}
> +
> +static AVCodec *find_codec(enum AVCodecID id, int (*x)(const AVCodec *))
> +{
> +    const AVCodec *p, *experimental = NULL;
> +    void *i = 0;
> +
> +    id = remap_deprecated_codec_id(id);
> +
> +    while ((p = av_codec_iterate(&i))) {
> +        if (!x(p))
> +            continue;
> +        if (p->id == id) {
> +            if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
> +                experimental = p;
> +            } else
> +                return (AVCodec*)p;
> +        }
> +    }
>  
> -    ff_thread_once(&control, register_all);
> +    return (AVCodec*)experimental;
> +}
> +
> +AVCodec *avcodec_find_encoder(enum AVCodecID id)
> +{
> +    return find_codec(id, av_codec_is_encoder);
> +}
> +
> +AVCodec *avcodec_find_decoder(enum AVCodecID id)
> +{
> +    return find_codec(id, av_codec_is_decoder);
> +}
> +
> +static AVCodec *find_codec_by_name(const char *name, int (*x)(const AVCodec *))
> +{
> +    void *i = 0;
> +    const AVCodec *p;
> +
> +    if (!name)
> +        return NULL;
> +
> +    while ((p = av_codec_iterate(&i))) {
> +        if (!x(p))
> +            continue;
> +        if (strcmp(name, p->name) == 0)
> +            return (AVCodec*)p;
> +    }
> +
> +    return NULL;
> +}
> +
> +AVCodec *avcodec_find_encoder_by_name(const char *name)
> +{
> +    return find_codec_by_name(name, av_codec_is_encoder);
> +}
> +
> +AVCodec *avcodec_find_decoder_by_name(const char *name)
> +{
> +    return find_codec_by_name(name, av_codec_is_decoder);
>  }

Personally I'd argue a bool parameter or so to select encoders vs.
decoders would be less roudnabout (like it was before), but I have no
strong opinion. Could be considered an improvement as well.

> +static void av_parser_init_next(void)
> +{
> +    AVCodecParser *prev = NULL, *p;
> +    int i = 0;
> +    while ((p = (AVCodecParser*)parser_list[i++])) {

(Personally I'd prefer less than 2 side effects in conditional
expressions, but maybe it doesn't matter.)

> +        if (prev)
> +            prev->next = p;
> +        prev = p;
> +    }

> +    if (prev)
> +        prev->next = NULL;

Probably redundant assignment again.

Still missing: APIchanges entry.
wm4 Jan. 3, 2018, 3:31 p.m. UTC | #2 
On Wed, 3 Jan 2018 00:42:36 +0000
Josh de Kock <josh@itanimul.li> wrote:

> Also replace linked list with an array.
> ---

> diff --git a/doc/APIchanges b/doc/APIchanges
> index 3c9f237..3d28d85 100644
> --- a/doc/APIchanges
> +++ b/doc/APIchanges
> @@ -15,6 +15,10 @@ libavutil:     2017-10-21
>  
>  API changes, most recent first:
>  
> +2018-xx-xx - xxxxxxx - lavc 58.9.100 - avcodec.h
> +  Deprecate use of avcodec_register(), avcodec_register_all(), and
> +  av_codec_next(). Add av_codec_iterate().
> +

PS: oh, sorry, APIchanges entry was present. Never mind.
Rostislav Pehlivanov Jan. 3, 2018, 4:50 p.m. UTC | #3 
On 3 January 2018 at 15:25, wm4 <nfxjfg@googlemail.com> wrote:

> On Wed, 3 Jan 2018 00:42:36 +0000
> Josh de Kock <josh@itanimul.li> wrote:
>
> > Also replace linked list with an array.
> > ---
> >  configure              |   12 +-
> >  doc/APIchanges         |    4 +
> >  libavcodec/allcodecs.c | 1473 ++++++++++++++++++++++++++++--
> ------------------
> >  libavcodec/avcodec.h   |   31 +
> >  libavcodec/parser.c    |   87 ++-
> >  libavcodec/utils.c     |  105 ----
> >  libavcodec/version.h   |    3 +
> >  7 files changed, 974 insertions(+), 741 deletions(-)
> >
>
> > +#if CONFIG_ME_CMP
> > +#include "me_cmp.h"
> > +#endif
> > +
> > +pthread_once_t av_codec_static_init = PTHREAD_ONCE_INIT;
> > +static void av_codec_init_static(void)
> > +{
> > +#if CONFIG_ME_CMP
> > +    ff_me_cmp_init_static();
> > +#endif
>
> (This should probably be moved away, since it doesn't really have to do
> with any of this - it's just a global init in the wrong place. But I
> won't insist that this gets cleaned up now. Someone else can do it
> later.)
>
> > +    for (int i = 0; codec_list[i]; i++) {
> > +        if (codec_list[i]->init_static_data)
> > +            codec_list[i]->init_static_data((AVCodec*)codec_list[i]);
> >      }
> > +}
> > +
> > +const AVCodec *av_codec_iterate(void **opaque)
> > +{
> > +    uintptr_t i = (uintptr_t)*opaque;
> > +    const AVCodec *c = codec_list[i];
> > +
> > +    pthread_once(&av_codec_static_init, av_codec_init_static);
>
> One issue: you need to use ff_thread_once() everywhere (it uses a
> different initializer type too). The reason is because if it's built
> without threads, pthread_once() will not be defined.
>
> Same for all other uses of this.
>
> >
> > -#define REGISTER_ENCDEC(X, x) REGISTER_ENCODER(X, x);
> REGISTER_DECODER(X, x)
> > +    if (c)
> > +        *opaque = (void*)(i + 1);
> >
> > -#define REGISTER_PARSER(X, x)
>  \
> > -    {
>  \
> > -        extern AVCodecParser ff_##x##_parser;
>  \
> > -        if (CONFIG_##X##_PARSER)
> \
> > -            av_register_codec_parser(&ff_##x##_parser);
>  \
> > +    return c;
> > +}
> > +
> > +#if FF_API_NEXT
> > +pthread_once_t av_codec_next_init = PTHREAD_ONCE_INIT;
> > +
> > +static void av_codec_init_next(void)
> > +{
> > +    AVCodec *prev = NULL, *p;
> > +    void *i = 0;
> > +    while ((p = (AVCodec*)av_codec_iterate(&i))) {
> > +        if (prev)
> > +            prev->next = p;
> > +        prev = p;
> >      }
>
> > +    if (prev)
> > +        prev->next = NULL;
>
> What's this for? Isn't it already initialized to NULL?
>
> > +}
> > +
> >
> > -static void register_all(void)
> > +
> > +av_cold void avcodec_register(AVCodec *codec)
> >  {
> > -    /* video codecs */
> > -    REGISTER_ENCODER(A64MULTI,          a64multi);
>
> > +    pthread_once(&av_codec_next_init, av_codec_init_next);
> > +}
>
> I don't see much of a point in this call. Could be dropped, so the body
> is empty.
>
> > +AVCodec *av_codec_next(const AVCodec *c)
> > +{
> > +    pthread_once(&av_codec_next_init, av_codec_init_next);
> > +
> > +    if (c)
> > +        return c->next;
> > +    else
> > +        return (AVCodec*)codec_list[0];
> >  }
> >
> >  void avcodec_register_all(void)
> >  {
> > -    static AVOnce control = AV_ONCE_INIT;
> > +    pthread_once(&av_codec_next_init, av_codec_init_next);
> > +}
>
> So that means if you use the legacy API, you still need to call
> the register function. Strange choice, but I'm fine with it.
>
> > +#endif
> > +
> > +static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
> > +{
> > +    switch(id){
> > +        //This is for future deprecatec codec ids, its empty since
> > +        //last major bump but will fill up again over time, please
> don't remove it
> > +        default                                         : return id;
> > +    }
> > +}
> > +
> > +static AVCodec *find_codec(enum AVCodecID id, int (*x)(const AVCodec *))
> > +{
> > +    const AVCodec *p, *experimental = NULL;
> > +    void *i = 0;
> > +
> > +    id = remap_deprecated_codec_id(id);
> > +
> > +    while ((p = av_codec_iterate(&i))) {
> > +        if (!x(p))
> > +            continue;
> > +        if (p->id == id) {
> > +            if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL &&
> !experimental) {
> > +                experimental = p;
> > +            } else
> > +                return (AVCodec*)p;
> > +        }
> > +    }
> >
> > -    ff_thread_once(&control, register_all);
> > +    return (AVCodec*)experimental;
> > +}
> > +
> > +AVCodec *avcodec_find_encoder(enum AVCodecID id)
> > +{
> > +    return find_codec(id, av_codec_is_encoder);
> > +}
> > +
> > +AVCodec *avcodec_find_decoder(enum AVCodecID id)
> > +{
> > +    return find_codec(id, av_codec_is_decoder);
> > +}
> > +
> > +static AVCodec *find_codec_by_name(const char *name, int (*x)(const
> AVCodec *))
> > +{
> > +    void *i = 0;
> > +    const AVCodec *p;
> > +
> > +    if (!name)
> > +        return NULL;
> > +
> > +    while ((p = av_codec_iterate(&i))) {
> > +        if (!x(p))
> > +            continue;
> > +        if (strcmp(name, p->name) == 0)
> > +            return (AVCodec*)p;
> > +    }
> > +
> > +    return NULL;
> > +}
> > +
> > +AVCodec *avcodec_find_encoder_by_name(const char *name)
> > +{
> > +    return find_codec_by_name(name, av_codec_is_encoder);
> > +}
> > +
> > +AVCodec *avcodec_find_decoder_by_name(const char *name)
> > +{
> > +    return find_codec_by_name(name, av_codec_is_decoder);
> >  }
>
> Personally I'd argue a bool parameter or so to select encoders vs.
> decoders would be less roudnabout (like it was before), but I have no
> strong opinion. Could be considered an improvement as well.
>
>
I think separate functions would be better in this case.
wm4 Jan. 3, 2018, 4:54 p.m. UTC | #4 
On Wed, 3 Jan 2018 16:50:00 +0000
Rostislav Pehlivanov <atomnuker@gmail.com> wrote:

> On 3 January 2018 at 15:25, wm4 <nfxjfg@googlemail.com> wrote:
> 
> > On Wed, 3 Jan 2018 00:42:36 +0000
> > Josh de Kock <josh@itanimul.li> wrote:
> >  

> > > +static AVCodec *find_codec_by_name(const char *name, int (*x)(const  
> > AVCodec *))  
> > > +{
> > > +    void *i = 0;
> > > +    const AVCodec *p;
> > > +
> > > +    if (!name)
> > > +        return NULL;
> > > +
> > > +    while ((p = av_codec_iterate(&i))) {
> > > +        if (!x(p))
> > > +            continue;
> > > +        if (strcmp(name, p->name) == 0)
> > > +            return (AVCodec*)p;
> > > +    }
> > > +
> > > +    return NULL;
> > > +}
> > > +
> > > +AVCodec *avcodec_find_encoder_by_name(const char *name)
> > > +{
> > > +    return find_codec_by_name(name, av_codec_is_encoder);
> > > +}
> > > +
> > > +AVCodec *avcodec_find_decoder_by_name(const char *name)
> > > +{
> > > +    return find_codec_by_name(name, av_codec_is_decoder);
> > >  }  
> >
> > Personally I'd argue a bool parameter or so to select encoders vs.
> > decoders would be less roudnabout (like it was before), but I have no
> > strong opinion. Could be considered an improvement as well.
> >
> >  
> I think separate functions would be better in this case.

My comment was just about how find_codec_by_name() is called. Certainly
we don't want to duplicate the actual code.
Muhammad Faiz Jan. 3, 2018, 7:16 p.m. UTC | #5 
On Wed, Jan 3, 2018 at 7:42 AM, Josh de Kock <josh@itanimul.li> wrote:
> Also replace linked list with an array.
> ---
>  configure              |   12 +-
>  doc/APIchanges         |    4 +
>  libavcodec/allcodecs.c | 1473 ++++++++++++++++++++++++++++--------------------
>  libavcodec/avcodec.h   |   31 +
>  libavcodec/parser.c    |   87 ++-
>  libavcodec/utils.c     |  105 ----
>  libavcodec/version.h   |    3 +
>  7 files changed, 974 insertions(+), 741 deletions(-)
>

> +
> +#include "codec_list.c"

Won't work when building outside source directory. Use "libavcodec/codec_list.c"


> +static void av_codec_init_next(void)
> +{
> +    AVCodec *prev = NULL, *p;
> +    void *i = 0;
> +    while ((p = (AVCodec*)av_codec_iterate(&i))) {

Better use: for (i = 0; codec_list[i]; i++)


> diff --git a/libavcodec/parser.c b/libavcodec/parser.c
> index 670680e..76532e2 100644
> --- a/libavcodec/parser.c
> +++ b/libavcodec/parser.c
> @@ -32,33 +32,104 @@
>  #include "internal.h"
>  #include "parser.h"
>
> -static AVCodecParser *av_first_parser = NULL;
> +#include "pthread.h"
> +
> +/* Parsers */
> +extern AVCodecParser ff_aac_parser;
> +extern AVCodecParser ff_aac_latm_parser;
> +extern AVCodecParser ff_ac3_parser;
> +extern AVCodecParser ff_adx_parser;
> +extern AVCodecParser ff_bmp_parser;
> +extern AVCodecParser ff_cavsvideo_parser;
> +extern AVCodecParser ff_cook_parser;
> +extern AVCodecParser ff_dca_parser;
> +extern AVCodecParser ff_dirac_parser;
> +extern AVCodecParser ff_dnxhd_parser;
> +extern AVCodecParser ff_dpx_parser;
> +extern AVCodecParser ff_dvaudio_parser;
> +extern AVCodecParser ff_dvbsub_parser;
> +extern AVCodecParser ff_dvdsub_parser;
> +extern AVCodecParser ff_dvd_nav_parser;
> +extern AVCodecParser ff_flac_parser;
> +extern AVCodecParser ff_g729_parser;
> +extern AVCodecParser ff_gsm_parser;
> +extern AVCodecParser ff_h261_parser;
> +extern AVCodecParser ff_h263_parser;
> +extern AVCodecParser ff_h264_parser;
> +extern AVCodecParser ff_hevc_parser;
> +extern AVCodecParser ff_mjpeg_parser;
> +extern AVCodecParser ff_mlp_parser;
> +extern AVCodecParser ff_mpeg4video_parser;
> +extern AVCodecParser ff_mpegaudio_parser;
> +extern AVCodecParser ff_mpegvideo_parser;
> +extern AVCodecParser ff_opus_parser;
> +extern AVCodecParser ff_png_parser;
> +extern AVCodecParser ff_pnm_parser;
> +extern AVCodecParser ff_rv30_parser;
> +extern AVCodecParser ff_rv40_parser;
> +extern AVCodecParser ff_sipr_parser;
> +extern AVCodecParser ff_tak_parser;
> +extern AVCodecParser ff_vc1_parser;
> +extern AVCodecParser ff_vorbis_parser;
> +extern AVCodecParser ff_vp3_parser;
> +extern AVCodecParser ff_vp8_parser;
> +extern AVCodecParser ff_vp9_parser;
> +extern AVCodecParser ff_xma_parser;

Why these are not in allcodecs.c?
Rostislav Pehlivanov Jan. 3, 2018, 7:59 p.m. UTC | #6 
On 3 January 2018 at 19:16, Muhammad Faiz <mfcc64@gmail.com> wrote:

> On Wed, Jan 3, 2018 at 7:42 AM, Josh de Kock <josh@itanimul.li> wrote:
> > Also replace linked list with an array.
> > ---
> >  configure              |   12 +-
> >  doc/APIchanges         |    4 +
> >  libavcodec/allcodecs.c | 1473 ++++++++++++++++++++++++++++--
> ------------------
> >  libavcodec/avcodec.h   |   31 +
> >  libavcodec/parser.c    |   87 ++-
> >  libavcodec/utils.c     |  105 ----
> >  libavcodec/version.h   |    3 +
> >  7 files changed, 974 insertions(+), 741 deletions(-)
> >
>
> > +
> > +#include "codec_list.c"
>
> Won't work when building outside source directory. Use
> "libavcodec/codec_list.c"
>

It pretty much will, this is exactly how hwaccels and bitstream filters
currently work.



>
> > +static void av_codec_init_next(void)
> > +{
> > +    AVCodec *prev = NULL, *p;
> > +    void *i = 0;
> > +    while ((p = (AVCodec*)av_codec_iterate(&i))) {
>
> Better use: for (i = 0; codec_list[i]; i++)
>
>
> > diff --git a/libavcodec/parser.c b/libavcodec/parser.c
> > index 670680e..76532e2 100644
> > --- a/libavcodec/parser.c
> > +++ b/libavcodec/parser.c
> > @@ -32,33 +32,104 @@
> >  #include "internal.h"
> >  #include "parser.h"
> >
> > -static AVCodecParser *av_first_parser = NULL;
> > +#include "pthread.h"
> > +
> > +/* Parsers */
> > +extern AVCodecParser ff_aac_parser;
> > +extern AVCodecParser ff_aac_latm_parser;
> > +extern AVCodecParser ff_ac3_parser;
> > +extern AVCodecParser ff_adx_parser;
> > +extern AVCodecParser ff_bmp_parser;
> > +extern AVCodecParser ff_cavsvideo_parser;
> > +extern AVCodecParser ff_cook_parser;
> > +extern AVCodecParser ff_dca_parser;
> > +extern AVCodecParser ff_dirac_parser;
> > +extern AVCodecParser ff_dnxhd_parser;
> > +extern AVCodecParser ff_dpx_parser;
> > +extern AVCodecParser ff_dvaudio_parser;
> > +extern AVCodecParser ff_dvbsub_parser;
> > +extern AVCodecParser ff_dvdsub_parser;
> > +extern AVCodecParser ff_dvd_nav_parser;
> > +extern AVCodecParser ff_flac_parser;
> > +extern AVCodecParser ff_g729_parser;
> > +extern AVCodecParser ff_gsm_parser;
> > +extern AVCodecParser ff_h261_parser;
> > +extern AVCodecParser ff_h263_parser;
> > +extern AVCodecParser ff_h264_parser;
> > +extern AVCodecParser ff_hevc_parser;
> > +extern AVCodecParser ff_mjpeg_parser;
> > +extern AVCodecParser ff_mlp_parser;
> > +extern AVCodecParser ff_mpeg4video_parser;
> > +extern AVCodecParser ff_mpegaudio_parser;
> > +extern AVCodecParser ff_mpegvideo_parser;
> > +extern AVCodecParser ff_opus_parser;
> > +extern AVCodecParser ff_png_parser;
> > +extern AVCodecParser ff_pnm_parser;
> > +extern AVCodecParser ff_rv30_parser;
> > +extern AVCodecParser ff_rv40_parser;
> > +extern AVCodecParser ff_sipr_parser;
> > +extern AVCodecParser ff_tak_parser;
> > +extern AVCodecParser ff_vc1_parser;
> > +extern AVCodecParser ff_vorbis_parser;
> > +extern AVCodecParser ff_vp3_parser;
> > +extern AVCodecParser ff_vp8_parser;
> > +extern AVCodecParser ff_vp9_parser;
> > +extern AVCodecParser ff_xma_parser;
>
> Why these are not in allcodecs.c?
>

Because they're parsers.


> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
Muhammad Faiz Jan. 3, 2018, 8:33 p.m. UTC | #7 
On Thu, Jan 4, 2018 at 2:59 AM, Rostislav Pehlivanov
<atomnuker@gmail.com> wrote:
> On 3 January 2018 at 19:16, Muhammad Faiz <mfcc64@gmail.com> wrote:
>
>> On Wed, Jan 3, 2018 at 7:42 AM, Josh de Kock <josh@itanimul.li> wrote:
>> > Also replace linked list with an array.
>> > ---
>> >  configure              |   12 +-
>> >  doc/APIchanges         |    4 +
>> >  libavcodec/allcodecs.c | 1473 ++++++++++++++++++++++++++++--
>> ------------------
>> >  libavcodec/avcodec.h   |   31 +
>> >  libavcodec/parser.c    |   87 ++-
>> >  libavcodec/utils.c     |  105 ----
>> >  libavcodec/version.h   |    3 +
>> >  7 files changed, 974 insertions(+), 741 deletions(-)
>> >
>>
>> > +
>> > +#include "codec_list.c"
>>
>> Won't work when building outside source directory. Use
>> "libavcodec/codec_list.c"
>>
>
> It pretty much will, this is exactly how hwaccels and bitstream filters
> currently work.

At bitstream_filters.c:
#include "libavcodec/bsf_list.c"

>
>
>
>>
>> > +static void av_codec_init_next(void)
>> > +{
>> > +    AVCodec *prev = NULL, *p;
>> > +    void *i = 0;
>> > +    while ((p = (AVCodec*)av_codec_iterate(&i))) {
>>
>> Better use: for (i = 0; codec_list[i]; i++)
>>
>>
>> > diff --git a/libavcodec/parser.c b/libavcodec/parser.c
>> > index 670680e..76532e2 100644
>> > --- a/libavcodec/parser.c
>> > +++ b/libavcodec/parser.c
>> > @@ -32,33 +32,104 @@
>> >  #include "internal.h"
>> >  #include "parser.h"
>> >
>> > -static AVCodecParser *av_first_parser = NULL;
>> > +#include "pthread.h"
>> > +
>> > +/* Parsers */
>> > +extern AVCodecParser ff_aac_parser;
>> > +extern AVCodecParser ff_aac_latm_parser;
>> > +extern AVCodecParser ff_ac3_parser;
>> > +extern AVCodecParser ff_adx_parser;
>> > +extern AVCodecParser ff_bmp_parser;
>> > +extern AVCodecParser ff_cavsvideo_parser;
>> > +extern AVCodecParser ff_cook_parser;
>> > +extern AVCodecParser ff_dca_parser;
>> > +extern AVCodecParser ff_dirac_parser;
>> > +extern AVCodecParser ff_dnxhd_parser;
>> > +extern AVCodecParser ff_dpx_parser;
>> > +extern AVCodecParser ff_dvaudio_parser;
>> > +extern AVCodecParser ff_dvbsub_parser;
>> > +extern AVCodecParser ff_dvdsub_parser;
>> > +extern AVCodecParser ff_dvd_nav_parser;
>> > +extern AVCodecParser ff_flac_parser;
>> > +extern AVCodecParser ff_g729_parser;
>> > +extern AVCodecParser ff_gsm_parser;
>> > +extern AVCodecParser ff_h261_parser;
>> > +extern AVCodecParser ff_h263_parser;
>> > +extern AVCodecParser ff_h264_parser;
>> > +extern AVCodecParser ff_hevc_parser;
>> > +extern AVCodecParser ff_mjpeg_parser;
>> > +extern AVCodecParser ff_mlp_parser;
>> > +extern AVCodecParser ff_mpeg4video_parser;
>> > +extern AVCodecParser ff_mpegaudio_parser;
>> > +extern AVCodecParser ff_mpegvideo_parser;
>> > +extern AVCodecParser ff_opus_parser;
>> > +extern AVCodecParser ff_png_parser;
>> > +extern AVCodecParser ff_pnm_parser;
>> > +extern AVCodecParser ff_rv30_parser;
>> > +extern AVCodecParser ff_rv40_parser;
>> > +extern AVCodecParser ff_sipr_parser;
>> > +extern AVCodecParser ff_tak_parser;
>> > +extern AVCodecParser ff_vc1_parser;
>> > +extern AVCodecParser ff_vorbis_parser;
>> > +extern AVCodecParser ff_vp3_parser;
>> > +extern AVCodecParser ff_vp8_parser;
>> > +extern AVCodecParser ff_vp9_parser;
>> > +extern AVCodecParser ff_xma_parser;
>>
>> Why these are not in allcodecs.c?
>>
>
> Because they're parsers.
>

They still need initialize next pointer. So better to initialize it on
avcodec_register_all().
Michael Niedermayer Jan. 4, 2018, 2:05 a.m. UTC | #8 
On Wed, Jan 03, 2018 at 12:42:36AM +0000, Josh de Kock wrote:
> Also replace linked list with an array.
> ---
>  configure              |   12 +-
>  doc/APIchanges         |    4 +
>  libavcodec/allcodecs.c | 1473 ++++++++++++++++++++++++++++--------------------
>  libavcodec/avcodec.h   |   31 +
>  libavcodec/parser.c    |   87 ++-
>  libavcodec/utils.c     |  105 ----
>  libavcodec/version.h   |    3 +
>  7 files changed, 974 insertions(+), 741 deletions(-)

Fails to build
make distclean ; ../configure && make 

LD	ffmpeg_g
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x10): undefined reference to `ff_apng_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x50): undefined reference to `ff_flashsv_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x54): undefined reference to `ff_flashsv2_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x6c): undefined reference to `ff_hap_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0xb4): undefined reference to `ff_png_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x138): undefined reference to `ff_zlib_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x13c): undefined reference to `ff_zmbv_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x25c): undefined reference to `ff_libfdk_aac_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x260): undefined reference to `ff_libgsm_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x264): undefined reference to `ff_libgsm_ms_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x268): undefined reference to `ff_libilbc_encoder'
libavcodec/libavcodec.a(allcodecs.o):(.rodata+0x26c): undefined reference to `ff_libmp3lame_encoder'

[...]
diff mbox

Patch

diff --git a/configure b/configure
index 606cdd0..bfe4bdf 100755
--- a/configure
+++ b/configure
@@ -3525,9 +3525,6 @@  find_things(){
     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
 }
 
-ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
-DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
-PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
@@ -3541,6 +3538,13 @@  find_things_extern(){
     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
 }
 
+ENCODER_LIST=$(find_things_extern encoder AVCodec libavcodec/allcodecs.c)
+DECODER_LIST=$(find_things_extern decoder AVCodec libavcodec/allcodecs.c)
+CODEC_LIST="
+    $ENCODER_LIST
+    $DECODER_LIST
+"
+PARSER_LIST=$(find_things_extern parser AVCodecParser libavcodec/parser.c)
 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
@@ -7034,6 +7038,8 @@  print_enabled_components(){
     cp_if_changed $TMPH $file
 }
 
+print_enabled_components libavcodec/codec_list.c AVCodec codec_list $CODEC_LIST
+print_enabled_components libavcodec/parser_list.c AVCodecParser parser_list $PARSER_LIST
 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
 
diff --git a/doc/APIchanges b/doc/APIchanges
index 3c9f237..3d28d85 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,10 @@  libavutil:     2017-10-21
 
 API changes, most recent first:
 
+2018-xx-xx - xxxxxxx - lavc 58.9.100 - avcodec.h
+  Deprecate use of avcodec_register(), avcodec_register_all(), and
+  av_codec_next(). Add av_codec_iterate().
+
 2017-xx-xx - xxxxxxx - lavc 58.9.100 - avcodec.h
   Deprecate av_lockmgr_register(). You need to build FFmpeg with threading
   support enabled to get basic thread-safety (which is the default build
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index ed1e7ab..a7ea772 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -29,641 +29,864 @@ 
 #include "avcodec.h"
 #include "version.h"
 
-#define REGISTER_ENCODER(X, x)                                          \
-    {                                                                   \
-        extern AVCodec ff_##x##_encoder;                                \
-        if (CONFIG_##X##_ENCODER)                                       \
-            avcodec_register(&ff_##x##_encoder);                        \
-    }
+extern AVCodec ff_a64multi_encoder;
+extern AVCodec ff_a64multi5_encoder;
+extern AVCodec ff_aasc_decoder;
+extern AVCodec ff_aic_decoder;
+extern AVCodec ff_alias_pix_encoder;
+extern AVCodec ff_alias_pix_decoder;
+extern AVCodec ff_amv_encoder;
+extern AVCodec ff_amv_decoder;
+extern AVCodec ff_anm_decoder;
+extern AVCodec ff_ansi_decoder;
+extern AVCodec ff_apng_encoder;
+extern AVCodec ff_apng_decoder;
+extern AVCodec ff_asv1_encoder;
+extern AVCodec ff_asv1_decoder;
+extern AVCodec ff_asv2_encoder;
+extern AVCodec ff_asv2_decoder;
+extern AVCodec ff_aura_decoder;
+extern AVCodec ff_aura2_decoder;
+extern AVCodec ff_avrp_encoder;
+extern AVCodec ff_avrp_decoder;
+extern AVCodec ff_avrn_decoder;
+extern AVCodec ff_avs_decoder;
+extern AVCodec ff_avui_encoder;
+extern AVCodec ff_avui_decoder;
+extern AVCodec ff_ayuv_encoder;
+extern AVCodec ff_ayuv_decoder;
+extern AVCodec ff_bethsoftvid_decoder;
+extern AVCodec ff_bfi_decoder;
+extern AVCodec ff_bink_decoder;
+extern AVCodec ff_bmp_encoder;
+extern AVCodec ff_bmp_decoder;
+extern AVCodec ff_bmv_video_decoder;
+extern AVCodec ff_brender_pix_decoder;
+extern AVCodec ff_c93_decoder;
+extern AVCodec ff_cavs_decoder;
+extern AVCodec ff_cdgraphics_decoder;
+extern AVCodec ff_cdxl_decoder;
+extern AVCodec ff_cfhd_decoder;
+extern AVCodec ff_cinepak_encoder;
+extern AVCodec ff_cinepak_decoder;
+extern AVCodec ff_clearvideo_decoder;
+extern AVCodec ff_cljr_encoder;
+extern AVCodec ff_cljr_decoder;
+extern AVCodec ff_cllc_decoder;
+extern AVCodec ff_comfortnoise_encoder;
+extern AVCodec ff_comfortnoise_decoder;
+extern AVCodec ff_cpia_decoder;
+extern AVCodec ff_cscd_decoder;
+extern AVCodec ff_cyuv_decoder;
+extern AVCodec ff_dds_decoder;
+extern AVCodec ff_dfa_decoder;
+extern AVCodec ff_dirac_decoder;
+extern AVCodec ff_dnxhd_encoder;
+extern AVCodec ff_dnxhd_decoder;
+extern AVCodec ff_dpx_encoder;
+extern AVCodec ff_dpx_decoder;
+extern AVCodec ff_dsicinvideo_decoder;
+extern AVCodec ff_dvaudio_decoder;
+extern AVCodec ff_dvvideo_encoder;
+extern AVCodec ff_dvvideo_decoder;
+extern AVCodec ff_dxa_decoder;
+extern AVCodec ff_dxtory_decoder;
+extern AVCodec ff_dxv_decoder;
+extern AVCodec ff_eacmv_decoder;
+extern AVCodec ff_eamad_decoder;
+extern AVCodec ff_eatgq_decoder;
+extern AVCodec ff_eatgv_decoder;
+extern AVCodec ff_eatqi_decoder;
+extern AVCodec ff_eightbps_decoder;
+extern AVCodec ff_eightsvx_exp_decoder;
+extern AVCodec ff_eightsvx_fib_decoder;
+extern AVCodec ff_escape124_decoder;
+extern AVCodec ff_escape130_decoder;
+extern AVCodec ff_exr_decoder;
+extern AVCodec ff_ffv1_encoder;
+extern AVCodec ff_ffv1_decoder;
+extern AVCodec ff_ffvhuff_encoder;
+extern AVCodec ff_ffvhuff_decoder;
+extern AVCodec ff_fic_decoder;
+extern AVCodec ff_fits_encoder;
+extern AVCodec ff_fits_decoder;
+extern AVCodec ff_flashsv_encoder;
+extern AVCodec ff_flashsv_decoder;
+extern AVCodec ff_flashsv2_encoder;
+extern AVCodec ff_flashsv2_decoder;
+extern AVCodec ff_flic_decoder;
+extern AVCodec ff_flv_encoder;
+extern AVCodec ff_flv_decoder;
+extern AVCodec ff_fmvc_decoder;
+extern AVCodec ff_fourxm_decoder;
+extern AVCodec ff_fraps_decoder;
+extern AVCodec ff_frwu_decoder;
+extern AVCodec ff_g2m_decoder;
+extern AVCodec ff_gdv_decoder;
+extern AVCodec ff_gif_encoder;
+extern AVCodec ff_gif_decoder;
+extern AVCodec ff_h261_encoder;
+extern AVCodec ff_h261_decoder;
+extern AVCodec ff_h263_encoder;
+extern AVCodec ff_h263_decoder;
+extern AVCodec ff_h263i_decoder;
+extern AVCodec ff_h263p_encoder;
+extern AVCodec ff_h263p_decoder;
+extern AVCodec ff_h263_v4l2m2m_decoder;
+extern AVCodec ff_h264_decoder;
+extern AVCodec ff_h264_crystalhd_decoder;
+extern AVCodec ff_h264_v4l2m2m_decoder;
+extern AVCodec ff_h264_mediacodec_decoder;
+extern AVCodec ff_h264_mmal_decoder;
+extern AVCodec ff_h264_qsv_decoder;
+extern AVCodec ff_h264_rkmpp_decoder;
+extern AVCodec ff_hap_encoder;
+extern AVCodec ff_hap_decoder;
+extern AVCodec ff_hevc_decoder;
+extern AVCodec ff_hevc_qsv_decoder;
+extern AVCodec ff_hevc_rkmpp_decoder;
+extern AVCodec ff_hevc_v4l2m2m_decoder;
+extern AVCodec ff_hnm4_video_decoder;
+extern AVCodec ff_hq_hqa_decoder;
+extern AVCodec ff_hqx_decoder;
+extern AVCodec ff_huffyuv_encoder;
+extern AVCodec ff_huffyuv_decoder;
+extern AVCodec ff_idcin_decoder;
+extern AVCodec ff_iff_ilbm_decoder;
+extern AVCodec ff_indeo2_decoder;
+extern AVCodec ff_indeo3_decoder;
+extern AVCodec ff_indeo4_decoder;
+extern AVCodec ff_indeo5_decoder;
+extern AVCodec ff_interplay_video_decoder;
+extern AVCodec ff_jpeg2000_encoder;
+extern AVCodec ff_jpeg2000_decoder;
+extern AVCodec ff_jpegls_encoder;
+extern AVCodec ff_jpegls_decoder;
+extern AVCodec ff_jv_decoder;
+extern AVCodec ff_kgv1_decoder;
+extern AVCodec ff_kmvc_decoder;
+extern AVCodec ff_lagarith_decoder;
+extern AVCodec ff_ljpeg_encoder;
+extern AVCodec ff_loco_decoder;
+extern AVCodec ff_m101_decoder;
+extern AVCodec ff_magicyuv_encoder;
+extern AVCodec ff_magicyuv_decoder;
+extern AVCodec ff_mdec_decoder;
+extern AVCodec ff_mimic_decoder;
+extern AVCodec ff_mjpeg_encoder;
+extern AVCodec ff_mjpeg_decoder;
+extern AVCodec ff_mjpegb_decoder;
+extern AVCodec ff_mmvideo_decoder;
+extern AVCodec ff_motionpixels_decoder;
+extern AVCodec ff_mpeg1video_encoder;
+extern AVCodec ff_mpeg1video_decoder;
+extern AVCodec ff_mpeg2video_encoder;
+extern AVCodec ff_mpeg2video_decoder;
+extern AVCodec ff_mpeg4_encoder;
+extern AVCodec ff_mpeg4_decoder;
+extern AVCodec ff_mpeg4_crystalhd_decoder;
+extern AVCodec ff_mpeg4_v4l2m2m_decoder;
+extern AVCodec ff_mpeg4_mmal_decoder;
+extern AVCodec ff_mpegvideo_decoder;
+extern AVCodec ff_mpeg1_v4l2m2m_decoder;
+extern AVCodec ff_mpeg2_mmal_decoder;
+extern AVCodec ff_mpeg2_crystalhd_decoder;
+extern AVCodec ff_mpeg2_v4l2m2m_decoder;
+extern AVCodec ff_mpeg2_qsv_decoder;
+extern AVCodec ff_mpeg2_mediacodec_decoder;
+extern AVCodec ff_msa1_decoder;
+extern AVCodec ff_mscc_decoder;
+extern AVCodec ff_msmpeg4v1_decoder;
+extern AVCodec ff_msmpeg4v2_encoder;
+extern AVCodec ff_msmpeg4v2_decoder;
+extern AVCodec ff_msmpeg4v3_encoder;
+extern AVCodec ff_msmpeg4v3_decoder;
+extern AVCodec ff_msmpeg4_crystalhd_decoder;
+extern AVCodec ff_msrle_decoder;
+extern AVCodec ff_mss1_decoder;
+extern AVCodec ff_mss2_decoder;
+extern AVCodec ff_msvideo1_encoder;
+extern AVCodec ff_msvideo1_decoder;
+extern AVCodec ff_mszh_decoder;
+extern AVCodec ff_mts2_decoder;
+extern AVCodec ff_mvc1_decoder;
+extern AVCodec ff_mvc2_decoder;
+extern AVCodec ff_mxpeg_decoder;
+extern AVCodec ff_nuv_decoder;
+extern AVCodec ff_paf_video_decoder;
+extern AVCodec ff_pam_encoder;
+extern AVCodec ff_pam_decoder;
+extern AVCodec ff_pbm_encoder;
+extern AVCodec ff_pbm_decoder;
+extern AVCodec ff_pcx_encoder;
+extern AVCodec ff_pcx_decoder;
+extern AVCodec ff_pgm_encoder;
+extern AVCodec ff_pgm_decoder;
+extern AVCodec ff_pgmyuv_encoder;
+extern AVCodec ff_pgmyuv_decoder;
+extern AVCodec ff_pictor_decoder;
+extern AVCodec ff_pixlet_decoder;
+extern AVCodec ff_png_encoder;
+extern AVCodec ff_png_decoder;
+extern AVCodec ff_ppm_encoder;
+extern AVCodec ff_ppm_decoder;
+extern AVCodec ff_prores_encoder;
+extern AVCodec ff_prores_decoder;
+extern AVCodec ff_prores_aw_encoder;
+extern AVCodec ff_prores_ks_encoder;
+extern AVCodec ff_prores_lgpl_decoder;
+extern AVCodec ff_psd_decoder;
+extern AVCodec ff_ptx_decoder;
+extern AVCodec ff_qdraw_decoder;
+extern AVCodec ff_qpeg_decoder;
+extern AVCodec ff_qtrle_encoder;
+extern AVCodec ff_qtrle_decoder;
+extern AVCodec ff_r10k_encoder;
+extern AVCodec ff_r10k_decoder;
+extern AVCodec ff_r210_encoder;
+extern AVCodec ff_r210_decoder;
+extern AVCodec ff_rawvideo_encoder;
+extern AVCodec ff_rawvideo_decoder;
+extern AVCodec ff_rl2_decoder;
+extern AVCodec ff_roq_encoder;
+extern AVCodec ff_roq_decoder;
+extern AVCodec ff_rpza_decoder;
+extern AVCodec ff_rscc_decoder;
+extern AVCodec ff_rv10_encoder;
+extern AVCodec ff_rv10_decoder;
+extern AVCodec ff_rv20_encoder;
+extern AVCodec ff_rv20_decoder;
+extern AVCodec ff_rv30_decoder;
+extern AVCodec ff_rv40_decoder;
+extern AVCodec ff_s302m_encoder;
+extern AVCodec ff_s302m_decoder;
+extern AVCodec ff_sanm_decoder;
+extern AVCodec ff_scpr_decoder;
+extern AVCodec ff_screenpresso_decoder;
+extern AVCodec ff_sdx2_dpcm_decoder;
+extern AVCodec ff_sgi_encoder;
+extern AVCodec ff_sgi_decoder;
+extern AVCodec ff_sgirle_decoder;
+extern AVCodec ff_sheervideo_decoder;
+extern AVCodec ff_smacker_decoder;
+extern AVCodec ff_smc_decoder;
+extern AVCodec ff_smvjpeg_decoder;
+extern AVCodec ff_snow_encoder;
+extern AVCodec ff_snow_decoder;
+extern AVCodec ff_sp5x_decoder;
+extern AVCodec ff_speedhq_decoder;
+extern AVCodec ff_srgc_decoder;
+extern AVCodec ff_sunrast_encoder;
+extern AVCodec ff_sunrast_decoder;
+extern AVCodec ff_svq1_encoder;
+extern AVCodec ff_svq1_decoder;
+extern AVCodec ff_svq3_decoder;
+extern AVCodec ff_targa_encoder;
+extern AVCodec ff_targa_decoder;
+extern AVCodec ff_targa_y216_decoder;
+extern AVCodec ff_tdsc_decoder;
+extern AVCodec ff_theora_decoder;
+extern AVCodec ff_thp_decoder;
+extern AVCodec ff_tiertexseqvideo_decoder;
+extern AVCodec ff_tiff_encoder;
+extern AVCodec ff_tiff_decoder;
+extern AVCodec ff_tmv_decoder;
+extern AVCodec ff_truemotion1_decoder;
+extern AVCodec ff_truemotion2_decoder;
+extern AVCodec ff_truemotion2rt_decoder;
+extern AVCodec ff_tscc_decoder;
+extern AVCodec ff_tscc2_decoder;
+extern AVCodec ff_txd_decoder;
+extern AVCodec ff_ulti_decoder;
+extern AVCodec ff_utvideo_encoder;
+extern AVCodec ff_utvideo_decoder;
+extern AVCodec ff_v210_encoder;
+extern AVCodec ff_v210_decoder;
+extern AVCodec ff_v210x_decoder;
+extern AVCodec ff_v308_encoder;
+extern AVCodec ff_v308_decoder;
+extern AVCodec ff_v408_encoder;
+extern AVCodec ff_v408_decoder;
+extern AVCodec ff_v410_encoder;
+extern AVCodec ff_v410_decoder;
+extern AVCodec ff_vb_decoder;
+extern AVCodec ff_vble_decoder;
+extern AVCodec ff_vc1_decoder;
+extern AVCodec ff_vc1_crystalhd_decoder;
+extern AVCodec ff_vc1image_decoder;
+extern AVCodec ff_vc1_mmal_decoder;
+extern AVCodec ff_vc1_qsv_decoder;
+extern AVCodec ff_vc1_v4l2m2m_decoder;
+extern AVCodec ff_vc2_encoder;
+extern AVCodec ff_vcr1_decoder;
+extern AVCodec ff_vmdvideo_decoder;
+extern AVCodec ff_vmnc_decoder;
+extern AVCodec ff_vp3_decoder;
+extern AVCodec ff_vp5_decoder;
+extern AVCodec ff_vp6_decoder;
+extern AVCodec ff_vp6a_decoder;
+extern AVCodec ff_vp6f_decoder;
+extern AVCodec ff_vp7_decoder;
+extern AVCodec ff_vp8_decoder;
+extern AVCodec ff_vp8_rkmpp_decoder;
+extern AVCodec ff_vp8_v4l2m2m_decoder;
+extern AVCodec ff_vp9_decoder;
+extern AVCodec ff_vp9_rkmpp_decoder;
+extern AVCodec ff_vp9_v4l2m2m_decoder;
+extern AVCodec ff_vqa_decoder;
+extern AVCodec ff_bitpacked_decoder;
+extern AVCodec ff_webp_decoder;
+extern AVCodec ff_wrapped_avframe_encoder;
+extern AVCodec ff_wrapped_avframe_decoder;
+extern AVCodec ff_wmv1_encoder;
+extern AVCodec ff_wmv1_decoder;
+extern AVCodec ff_wmv2_encoder;
+extern AVCodec ff_wmv2_decoder;
+extern AVCodec ff_wmv3_decoder;
+extern AVCodec ff_wmv3_crystalhd_decoder;
+extern AVCodec ff_wmv3image_decoder;
+extern AVCodec ff_wnv1_decoder;
+extern AVCodec ff_xan_wc3_decoder;
+extern AVCodec ff_xan_wc4_decoder;
+extern AVCodec ff_xbm_encoder;
+extern AVCodec ff_xbm_decoder;
+extern AVCodec ff_xface_encoder;
+extern AVCodec ff_xface_decoder;
+extern AVCodec ff_xl_decoder;
+extern AVCodec ff_xpm_decoder;
+extern AVCodec ff_xwd_encoder;
+extern AVCodec ff_xwd_decoder;
+extern AVCodec ff_y41p_encoder;
+extern AVCodec ff_y41p_decoder;
+extern AVCodec ff_ylc_decoder;
+extern AVCodec ff_yop_decoder;
+extern AVCodec ff_yuv4_encoder;
+extern AVCodec ff_yuv4_decoder;
+extern AVCodec ff_zero12v_decoder;
+extern AVCodec ff_zerocodec_decoder;
+extern AVCodec ff_zlib_encoder;
+extern AVCodec ff_zlib_decoder;
+extern AVCodec ff_zmbv_encoder;
+extern AVCodec ff_zmbv_decoder;
+
+/* audio codecs */
+extern AVCodec ff_aac_encoder;
+extern AVCodec ff_aac_decoder;
+extern AVCodec ff_aac_fixed_decoder;
+extern AVCodec ff_aac_latm_decoder;
+extern AVCodec ff_ac3_encoder;
+extern AVCodec ff_ac3_decoder;
+extern AVCodec ff_ac3_fixed_encoder;
+extern AVCodec ff_ac3_fixed_decoder;
+extern AVCodec ff_alac_encoder;
+extern AVCodec ff_alac_decoder;
+extern AVCodec ff_als_decoder;
+extern AVCodec ff_amrnb_decoder;
+extern AVCodec ff_amrwb_decoder;
+extern AVCodec ff_ape_decoder;
+extern AVCodec ff_aptx_encoder;
+extern AVCodec ff_aptx_decoder;
+extern AVCodec ff_atrac1_decoder;
+extern AVCodec ff_atrac3_decoder;
+extern AVCodec ff_atrac3al_decoder;
+extern AVCodec ff_atrac3p_decoder;
+extern AVCodec ff_atrac3pal_decoder;
+extern AVCodec ff_binkaudio_dct_decoder;
+extern AVCodec ff_binkaudio_rdft_decoder;
+extern AVCodec ff_bmv_audio_decoder;
+extern AVCodec ff_cook_decoder;
+extern AVCodec ff_dca_encoder;
+extern AVCodec ff_dca_decoder;
+extern AVCodec ff_dolby_e_decoder;
+extern AVCodec ff_dsd_lsbf_decoder;
+extern AVCodec ff_dsd_msbf_decoder;
+extern AVCodec ff_dsd_lsbf_planar_decoder;
+extern AVCodec ff_dsd_msbf_planar_decoder;
+extern AVCodec ff_dsicinaudio_decoder;
+extern AVCodec ff_dss_sp_decoder;
+extern AVCodec ff_dst_decoder;
+extern AVCodec ff_eac3_encoder;
+extern AVCodec ff_eac3_decoder;
+extern AVCodec ff_evrc_decoder;
+extern AVCodec ff_ffwavesynth_decoder;
+extern AVCodec ff_flac_encoder;
+extern AVCodec ff_flac_decoder;
+extern AVCodec ff_g723_1_encoder;
+extern AVCodec ff_g723_1_decoder;
+extern AVCodec ff_g729_decoder;
+extern AVCodec ff_gsm_decoder;
+extern AVCodec ff_gsm_ms_decoder;
+extern AVCodec ff_iac_decoder;
+extern AVCodec ff_imc_decoder;
+extern AVCodec ff_interplay_acm_decoder;
+extern AVCodec ff_mace3_decoder;
+extern AVCodec ff_mace6_decoder;
+extern AVCodec ff_metasound_decoder;
+extern AVCodec ff_mlp_encoder;
+extern AVCodec ff_mlp_decoder;
+extern AVCodec ff_mp1_decoder;
+extern AVCodec ff_mp1float_decoder;
+extern AVCodec ff_mp2_encoder;
+extern AVCodec ff_mp2_decoder;
+extern AVCodec ff_mp2float_decoder;
+extern AVCodec ff_mp2fixed_encoder;
+extern AVCodec ff_mp3_decoder;
+extern AVCodec ff_mp3float_decoder;
+extern AVCodec ff_mp3adu_decoder;
+extern AVCodec ff_mp3adufloat_decoder;
+extern AVCodec ff_mp3on4_decoder;
+extern AVCodec ff_mp3on4float_decoder;
+extern AVCodec ff_mpc7_decoder;
+extern AVCodec ff_mpc8_decoder;
+extern AVCodec ff_nellymoser_encoder;
+extern AVCodec ff_nellymoser_decoder;
+extern AVCodec ff_on2avc_decoder;
+extern AVCodec ff_opus_encoder;
+extern AVCodec ff_opus_decoder;
+extern AVCodec ff_paf_audio_decoder;
+extern AVCodec ff_qcelp_decoder;
+extern AVCodec ff_qdm2_decoder;
+extern AVCodec ff_qdmc_decoder;
+extern AVCodec ff_ra_144_encoder;
+extern AVCodec ff_ra_144_decoder;
+extern AVCodec ff_ra_288_decoder;
+extern AVCodec ff_ralf_decoder;
+extern AVCodec ff_shorten_decoder;
+extern AVCodec ff_sipr_decoder;
+extern AVCodec ff_smackaud_decoder;
+extern AVCodec ff_sonic_encoder;
+extern AVCodec ff_sonic_decoder;
+extern AVCodec ff_sonic_ls_encoder;
+extern AVCodec ff_tak_decoder;
+extern AVCodec ff_truehd_encoder;
+extern AVCodec ff_truehd_decoder;
+extern AVCodec ff_truespeech_decoder;
+extern AVCodec ff_tta_encoder;
+extern AVCodec ff_tta_decoder;
+extern AVCodec ff_twinvq_decoder;
+extern AVCodec ff_vmdaudio_decoder;
+extern AVCodec ff_vorbis_encoder;
+extern AVCodec ff_vorbis_decoder;
+extern AVCodec ff_wavpack_encoder;
+extern AVCodec ff_wavpack_decoder;
+extern AVCodec ff_wmalossless_decoder;
+extern AVCodec ff_wmapro_decoder;
+extern AVCodec ff_wmav1_encoder;
+extern AVCodec ff_wmav1_decoder;
+extern AVCodec ff_wmav2_encoder;
+extern AVCodec ff_wmav2_decoder;
+extern AVCodec ff_wmavoice_decoder;
+extern AVCodec ff_ws_snd1_decoder;
+extern AVCodec ff_xma1_decoder;
+extern AVCodec ff_xma2_decoder;
+
+/* PCM codecs */
+extern AVCodec ff_pcm_alaw_encoder;
+extern AVCodec ff_pcm_alaw_decoder;
+extern AVCodec ff_pcm_bluray_decoder;
+extern AVCodec ff_pcm_dvd_decoder;
+extern AVCodec ff_pcm_f16le_decoder;
+extern AVCodec ff_pcm_f24le_decoder;
+extern AVCodec ff_pcm_f32be_encoder;
+extern AVCodec ff_pcm_f32be_decoder;
+extern AVCodec ff_pcm_f32le_encoder;
+extern AVCodec ff_pcm_f32le_decoder;
+extern AVCodec ff_pcm_f64be_encoder;
+extern AVCodec ff_pcm_f64be_decoder;
+extern AVCodec ff_pcm_f64le_encoder;
+extern AVCodec ff_pcm_f64le_decoder;
+extern AVCodec ff_pcm_lxf_decoder;
+extern AVCodec ff_pcm_mulaw_encoder;
+extern AVCodec ff_pcm_mulaw_decoder;
+extern AVCodec ff_pcm_s8_encoder;
+extern AVCodec ff_pcm_s8_decoder;
+extern AVCodec ff_pcm_s8_planar_encoder;
+extern AVCodec ff_pcm_s8_planar_decoder;
+extern AVCodec ff_pcm_s16be_encoder;
+extern AVCodec ff_pcm_s16be_decoder;
+extern AVCodec ff_pcm_s16be_planar_encoder;
+extern AVCodec ff_pcm_s16be_planar_decoder;
+extern AVCodec ff_pcm_s16le_encoder;
+extern AVCodec ff_pcm_s16le_decoder;
+extern AVCodec ff_pcm_s16le_planar_encoder;
+extern AVCodec ff_pcm_s16le_planar_decoder;
+extern AVCodec ff_pcm_s24be_encoder;
+extern AVCodec ff_pcm_s24be_decoder;
+extern AVCodec ff_pcm_s24daud_encoder;
+extern AVCodec ff_pcm_s24daud_decoder;
+extern AVCodec ff_pcm_s24le_encoder;
+extern AVCodec ff_pcm_s24le_decoder;
+extern AVCodec ff_pcm_s24le_planar_encoder;
+extern AVCodec ff_pcm_s24le_planar_decoder;
+extern AVCodec ff_pcm_s32be_encoder;
+extern AVCodec ff_pcm_s32be_decoder;
+extern AVCodec ff_pcm_s32le_encoder;
+extern AVCodec ff_pcm_s32le_decoder;
+extern AVCodec ff_pcm_s32le_planar_encoder;
+extern AVCodec ff_pcm_s32le_planar_decoder;
+extern AVCodec ff_pcm_s64be_encoder;
+extern AVCodec ff_pcm_s64be_decoder;
+extern AVCodec ff_pcm_s64le_encoder;
+extern AVCodec ff_pcm_s64le_decoder;
+extern AVCodec ff_pcm_u8_encoder;
+extern AVCodec ff_pcm_u8_decoder;
+extern AVCodec ff_pcm_u16be_encoder;
+extern AVCodec ff_pcm_u16be_decoder;
+extern AVCodec ff_pcm_u16le_encoder;
+extern AVCodec ff_pcm_u16le_decoder;
+extern AVCodec ff_pcm_u24be_encoder;
+extern AVCodec ff_pcm_u24be_decoder;
+extern AVCodec ff_pcm_u24le_encoder;
+extern AVCodec ff_pcm_u24le_decoder;
+extern AVCodec ff_pcm_u32be_encoder;
+extern AVCodec ff_pcm_u32be_decoder;
+extern AVCodec ff_pcm_u32le_encoder;
+extern AVCodec ff_pcm_u32le_decoder;
+extern AVCodec ff_pcm_zork_decoder;
+
+/* DPCM codecs */
+extern AVCodec ff_gremlin_dpcm_decoder;
+extern AVCodec ff_interplay_dpcm_decoder;
+extern AVCodec ff_roq_dpcm_encoder;
+extern AVCodec ff_roq_dpcm_decoder;
+extern AVCodec ff_sol_dpcm_decoder;
+extern AVCodec ff_xan_dpcm_decoder;
+
+/* ADPCM codecs */
+extern AVCodec ff_adpcm_4xm_decoder;
+extern AVCodec ff_adpcm_adx_encoder;
+extern AVCodec ff_adpcm_adx_decoder;
+extern AVCodec ff_adpcm_afc_decoder;
+extern AVCodec ff_adpcm_aica_decoder;
+extern AVCodec ff_adpcm_ct_decoder;
+extern AVCodec ff_adpcm_dtk_decoder;
+extern AVCodec ff_adpcm_ea_decoder;
+extern AVCodec ff_adpcm_ea_maxis_xa_decoder;
+extern AVCodec ff_adpcm_ea_r1_decoder;
+extern AVCodec ff_adpcm_ea_r2_decoder;
+extern AVCodec ff_adpcm_ea_r3_decoder;
+extern AVCodec ff_adpcm_ea_xas_decoder;
+extern AVCodec ff_adpcm_g722_encoder;
+extern AVCodec ff_adpcm_g722_decoder;
+extern AVCodec ff_adpcm_g726_encoder;
+extern AVCodec ff_adpcm_g726_decoder;
+extern AVCodec ff_adpcm_g726le_encoder;
+extern AVCodec ff_adpcm_g726le_decoder;
+extern AVCodec ff_adpcm_ima_amv_decoder;
+extern AVCodec ff_adpcm_ima_apc_decoder;
+extern AVCodec ff_adpcm_ima_dat4_decoder;
+extern AVCodec ff_adpcm_ima_dk3_decoder;
+extern AVCodec ff_adpcm_ima_dk4_decoder;
+extern AVCodec ff_adpcm_ima_ea_eacs_decoder;
+extern AVCodec ff_adpcm_ima_ea_sead_decoder;
+extern AVCodec ff_adpcm_ima_iss_decoder;
+extern AVCodec ff_adpcm_ima_oki_decoder;
+extern AVCodec ff_adpcm_ima_qt_encoder;
+extern AVCodec ff_adpcm_ima_qt_decoder;
+extern AVCodec ff_adpcm_ima_rad_decoder;
+extern AVCodec ff_adpcm_ima_smjpeg_decoder;
+extern AVCodec ff_adpcm_ima_wav_encoder;
+extern AVCodec ff_adpcm_ima_wav_decoder;
+extern AVCodec ff_adpcm_ima_ws_decoder;
+extern AVCodec ff_adpcm_ms_encoder;
+extern AVCodec ff_adpcm_ms_decoder;
+extern AVCodec ff_adpcm_mtaf_decoder;
+extern AVCodec ff_adpcm_psx_decoder;
+extern AVCodec ff_adpcm_sbpro_2_decoder;
+extern AVCodec ff_adpcm_sbpro_3_decoder;
+extern AVCodec ff_adpcm_sbpro_4_decoder;
+extern AVCodec ff_adpcm_swf_encoder;
+extern AVCodec ff_adpcm_swf_decoder;
+extern AVCodec ff_adpcm_thp_decoder;
+extern AVCodec ff_adpcm_thp_le_decoder;
+extern AVCodec ff_adpcm_vima_decoder;
+extern AVCodec ff_adpcm_xa_decoder;
+extern AVCodec ff_adpcm_yamaha_encoder;
+extern AVCodec ff_adpcm_yamaha_decoder;
+
+/* subtitles */
+extern AVCodec ff_ssa_encoder;
+extern AVCodec ff_ssa_decoder;
+extern AVCodec ff_ass_encoder;
+extern AVCodec ff_ass_decoder;
+extern AVCodec ff_ccaption_decoder;
+extern AVCodec ff_dvbsub_encoder;
+extern AVCodec ff_dvbsub_decoder;
+extern AVCodec ff_dvdsub_encoder;
+extern AVCodec ff_dvdsub_decoder;
+extern AVCodec ff_jacosub_decoder;
+extern AVCodec ff_microdvd_decoder;
+extern AVCodec ff_movtext_encoder;
+extern AVCodec ff_movtext_decoder;
+extern AVCodec ff_mpl2_decoder;
+extern AVCodec ff_pgssub_decoder;
+extern AVCodec ff_pjs_decoder;
+extern AVCodec ff_realtext_decoder;
+extern AVCodec ff_sami_decoder;
+extern AVCodec ff_srt_encoder;
+extern AVCodec ff_srt_decoder;
+extern AVCodec ff_stl_decoder;
+extern AVCodec ff_subrip_encoder;
+extern AVCodec ff_subrip_decoder;
+extern AVCodec ff_subviewer_decoder;
+extern AVCodec ff_subviewer1_decoder;
+extern AVCodec ff_text_encoder;
+extern AVCodec ff_text_decoder;
+extern AVCodec ff_vplayer_decoder;
+extern AVCodec ff_webvtt_encoder;
+extern AVCodec ff_webvtt_decoder;
+extern AVCodec ff_xsub_encoder;
+extern AVCodec ff_xsub_decoder;
+
+/* external libraries */
+extern AVCodec ff_aac_at_encoder;
+extern AVCodec ff_aac_at_decoder;
+extern AVCodec ff_ac3_at_decoder;
+extern AVCodec ff_adpcm_ima_qt_at_decoder;
+extern AVCodec ff_alac_at_encoder;
+extern AVCodec ff_alac_at_decoder;
+extern AVCodec ff_amr_nb_at_decoder;
+extern AVCodec ff_eac3_at_decoder;
+extern AVCodec ff_gsm_ms_at_decoder;
+extern AVCodec ff_ilbc_at_encoder;
+extern AVCodec ff_ilbc_at_decoder;
+extern AVCodec ff_mp1_at_decoder;
+extern AVCodec ff_mp2_at_decoder;
+extern AVCodec ff_mp3_at_decoder;
+extern AVCodec ff_pcm_alaw_at_encoder;
+extern AVCodec ff_pcm_alaw_at_decoder;
+extern AVCodec ff_pcm_mulaw_at_encoder;
+extern AVCodec ff_pcm_mulaw_at_decoder;
+extern AVCodec ff_qdmc_at_decoder;
+extern AVCodec ff_qdm2_at_decoder;
+extern AVCodec ff_libcelt_decoder;
+extern AVCodec ff_libfdk_aac_encoder;
+extern AVCodec ff_libfdk_aac_decoder;
+extern AVCodec ff_libgsm_encoder;
+extern AVCodec ff_libgsm_decoder;
+extern AVCodec ff_libgsm_ms_encoder;
+extern AVCodec ff_libgsm_ms_decoder;
+extern AVCodec ff_libilbc_encoder;
+extern AVCodec ff_libilbc_decoder;
+extern AVCodec ff_libmp3lame_encoder;
+extern AVCodec ff_libopencore_amrnb_encoder;
+extern AVCodec ff_libopencore_amrnb_decoder;
+extern AVCodec ff_libopencore_amrwb_decoder;
+extern AVCodec ff_libopenjpeg_encoder;
+extern AVCodec ff_libopenjpeg_decoder;
+extern AVCodec ff_libopus_encoder;
+extern AVCodec ff_libopus_decoder;
+extern AVCodec ff_librsvg_decoder;
+extern AVCodec ff_libshine_encoder;
+extern AVCodec ff_libspeex_encoder;
+extern AVCodec ff_libspeex_decoder;
+extern AVCodec ff_libtheora_encoder;
+extern AVCodec ff_libtwolame_encoder;
+extern AVCodec ff_libvo_amrwbenc_encoder;
+extern AVCodec ff_libvorbis_encoder;
+extern AVCodec ff_libvorbis_decoder;
+extern AVCodec ff_libvpx_vp8_encoder;
+extern AVCodec ff_libvpx_vp8_decoder;
+extern AVCodec ff_libvpx_vp9_encoder;
+extern AVCodec ff_libvpx_vp9_decoder;
+extern AVCodec ff_libwavpack_encoder;
+/* preferred over libwebp */
+extern AVCodec ff_libwebp_anim_encoder;
+extern AVCodec ff_libwebp_encoder;
+extern AVCodec ff_libx262_encoder;
+extern AVCodec ff_libx264_encoder;
+extern AVCodec ff_libx264rgb_encoder;
+extern AVCodec ff_libx265_encoder;
+extern AVCodec ff_libxavs_encoder;
+extern AVCodec ff_libxvid_encoder;
+extern AVCodec ff_libzvbi_teletext_decoder;
+
+/* text */
+extern AVCodec ff_bintext_decoder;
+extern AVCodec ff_xbin_decoder;
+extern AVCodec ff_idf_decoder;
 
-#define REGISTER_DECODER(X, x)                                          \
-    {                                                                   \
-        extern AVCodec ff_##x##_decoder;                                \
-        if (CONFIG_##X##_DECODER)                                       \
-            avcodec_register(&ff_##x##_decoder);                        \
+/* external libraries, that shouldn't be used by default if one of the
+ * above is available */
+extern AVCodec ff_h263_v4l2m2m_encoder;
+extern AVCodec ff_libopenh264_encoder;
+extern AVCodec ff_libopenh264_decoder;
+extern AVCodec ff_h264_amf_encoder;
+extern AVCodec ff_h264_cuvid_decoder;
+extern AVCodec ff_h264_nvenc_encoder;
+extern AVCodec ff_h264_omx_encoder;
+extern AVCodec ff_h264_qsv_encoder;
+extern AVCodec ff_h264_v4l2m2m_encoder;
+extern AVCodec ff_h264_vaapi_encoder;
+extern AVCodec ff_h264_videotoolbox_encoder;
+#if FF_API_NVENC_OLD_NAME
+extern AVCodec ff_nvenc_encoder;
+extern AVCodec ff_nvenc_h264_encoder;
+extern AVCodec ff_nvenc_hevc_encoder;
+#endif
+extern AVCodec ff_hevc_amf_encoder;
+extern AVCodec ff_hevc_cuvid_decoder;
+extern AVCodec ff_hevc_mediacodec_decoder;
+extern AVCodec ff_hevc_nvenc_encoder;
+extern AVCodec ff_hevc_qsv_encoder;
+extern AVCodec ff_hevc_v4l2m2m_encoder;
+extern AVCodec ff_hevc_vaapi_encoder;
+extern AVCodec ff_hevc_videotoolbox_encoder;
+extern AVCodec ff_libkvazaar_encoder;
+extern AVCodec ff_mjpeg_cuvid_decoder;
+extern AVCodec ff_mjpeg_qsv_encoder;
+extern AVCodec ff_mjpeg_vaapi_encoder;
+extern AVCodec ff_mpeg1_cuvid_decoder;
+extern AVCodec ff_mpeg2_cuvid_decoder;
+extern AVCodec ff_mpeg2_qsv_encoder;
+extern AVCodec ff_mpeg2_vaapi_encoder;
+extern AVCodec ff_mpeg4_cuvid_decoder;
+extern AVCodec ff_mpeg4_mediacodec_decoder;
+extern AVCodec ff_mpeg4_v4l2m2m_encoder;
+extern AVCodec ff_vc1_cuvid_decoder;
+extern AVCodec ff_vp8_cuvid_decoder;
+extern AVCodec ff_vp8_mediacodec_decoder;
+extern AVCodec ff_vp8_qsv_decoder;
+extern AVCodec ff_vp8_v4l2m2m_encoder;
+extern AVCodec ff_vp8_vaapi_encoder;
+extern AVCodec ff_vp9_cuvid_decoder;
+extern AVCodec ff_vp9_mediacodec_decoder;
+extern AVCodec ff_vp9_vaapi_encoder;
+
+#include "codec_list.c"
+
+#if CONFIG_ME_CMP
+#include "me_cmp.h"
+#endif
+
+pthread_once_t av_codec_static_init = PTHREAD_ONCE_INIT;
+static void av_codec_init_static(void)
+{
+#if CONFIG_ME_CMP
+    ff_me_cmp_init_static();
+#endif
+    for (int i = 0; codec_list[i]; i++) {
+        if (codec_list[i]->init_static_data)
+            codec_list[i]->init_static_data((AVCodec*)codec_list[i]);
     }
+}
+
+const AVCodec *av_codec_iterate(void **opaque)
+{
+    uintptr_t i = (uintptr_t)*opaque;
+    const AVCodec *c = codec_list[i];
+
+    pthread_once(&av_codec_static_init, av_codec_init_static);
 
-#define REGISTER_ENCDEC(X, x) REGISTER_ENCODER(X, x); REGISTER_DECODER(X, x)
+    if (c)
+        *opaque = (void*)(i + 1);
 
-#define REGISTER_PARSER(X, x)                                           \
-    {                                                                   \
-        extern AVCodecParser ff_##x##_parser;                           \
-        if (CONFIG_##X##_PARSER)                                        \
-            av_register_codec_parser(&ff_##x##_parser);                 \
+    return c;
+}
+
+#if FF_API_NEXT
+pthread_once_t av_codec_next_init = PTHREAD_ONCE_INIT;
+
+static void av_codec_init_next(void)
+{
+    AVCodec *prev = NULL, *p;
+    void *i = 0;
+    while ((p = (AVCodec*)av_codec_iterate(&i))) {
+        if (prev)
+            prev->next = p;
+        prev = p;
     }
+    if (prev)
+        prev->next = NULL;
+}
+
 
-static void register_all(void)
+
+av_cold void avcodec_register(AVCodec *codec)
 {
-    /* video codecs */
-    REGISTER_ENCODER(A64MULTI,          a64multi);
-    REGISTER_ENCODER(A64MULTI5,         a64multi5);
-    REGISTER_DECODER(AASC,              aasc);
-    REGISTER_DECODER(AIC,               aic);
-    REGISTER_ENCDEC (ALIAS_PIX,         alias_pix);
-    REGISTER_ENCDEC (AMV,               amv);
-    REGISTER_DECODER(ANM,               anm);
-    REGISTER_DECODER(ANSI,              ansi);
-    REGISTER_ENCDEC (APNG,              apng);
-    REGISTER_ENCDEC (ASV1,              asv1);
-    REGISTER_ENCDEC (ASV2,              asv2);
-    REGISTER_DECODER(AURA,              aura);
-    REGISTER_DECODER(AURA2,             aura2);
-    REGISTER_ENCDEC (AVRP,              avrp);
-    REGISTER_DECODER(AVRN,              avrn);
-    REGISTER_DECODER(AVS,               avs);
-    REGISTER_ENCDEC (AVUI,              avui);
-    REGISTER_ENCDEC (AYUV,              ayuv);
-    REGISTER_DECODER(BETHSOFTVID,       bethsoftvid);
-    REGISTER_DECODER(BFI,               bfi);
-    REGISTER_DECODER(BINK,              bink);
-    REGISTER_ENCDEC (BMP,               bmp);
-    REGISTER_DECODER(BMV_VIDEO,         bmv_video);
-    REGISTER_DECODER(BRENDER_PIX,       brender_pix);
-    REGISTER_DECODER(C93,               c93);
-    REGISTER_DECODER(CAVS,              cavs);
-    REGISTER_DECODER(CDGRAPHICS,        cdgraphics);
-    REGISTER_DECODER(CDXL,              cdxl);
-    REGISTER_DECODER(CFHD,              cfhd);
-    REGISTER_ENCDEC (CINEPAK,           cinepak);
-    REGISTER_DECODER(CLEARVIDEO,        clearvideo);
-    REGISTER_ENCDEC (CLJR,              cljr);
-    REGISTER_DECODER(CLLC,              cllc);
-    REGISTER_ENCDEC (COMFORTNOISE,      comfortnoise);
-    REGISTER_DECODER(CPIA,              cpia);
-    REGISTER_DECODER(CSCD,              cscd);
-    REGISTER_DECODER(CYUV,              cyuv);
-    REGISTER_DECODER(DDS,               dds);
-    REGISTER_DECODER(DFA,               dfa);
-    REGISTER_DECODER(DIRAC,             dirac);
-    REGISTER_ENCDEC (DNXHD,             dnxhd);
-    REGISTER_ENCDEC (DPX,               dpx);
-    REGISTER_DECODER(DSICINVIDEO,       dsicinvideo);
-    REGISTER_DECODER(DVAUDIO,           dvaudio);
-    REGISTER_ENCDEC (DVVIDEO,           dvvideo);
-    REGISTER_DECODER(DXA,               dxa);
-    REGISTER_DECODER(DXTORY,            dxtory);
-    REGISTER_DECODER(DXV,               dxv);
-    REGISTER_DECODER(EACMV,             eacmv);
-    REGISTER_DECODER(EAMAD,             eamad);
-    REGISTER_DECODER(EATGQ,             eatgq);
-    REGISTER_DECODER(EATGV,             eatgv);
-    REGISTER_DECODER(EATQI,             eatqi);
-    REGISTER_DECODER(EIGHTBPS,          eightbps);
-    REGISTER_DECODER(EIGHTSVX_EXP,      eightsvx_exp);
-    REGISTER_DECODER(EIGHTSVX_FIB,      eightsvx_fib);
-    REGISTER_DECODER(ESCAPE124,         escape124);
-    REGISTER_DECODER(ESCAPE130,         escape130);
-    REGISTER_DECODER(EXR,               exr);
-    REGISTER_ENCDEC (FFV1,              ffv1);
-    REGISTER_ENCDEC (FFVHUFF,           ffvhuff);
-    REGISTER_DECODER(FIC,               fic);
-    REGISTER_ENCDEC (FITS,              fits);
-    REGISTER_ENCDEC (FLASHSV,           flashsv);
-    REGISTER_ENCDEC (FLASHSV2,          flashsv2);
-    REGISTER_DECODER(FLIC,              flic);
-    REGISTER_ENCDEC (FLV,               flv);
-    REGISTER_DECODER(FMVC,              fmvc);
-    REGISTER_DECODER(FOURXM,            fourxm);
-    REGISTER_DECODER(FRAPS,             fraps);
-    REGISTER_DECODER(FRWU,              frwu);
-    REGISTER_DECODER(G2M,               g2m);
-    REGISTER_DECODER(GDV,               gdv);
-    REGISTER_ENCDEC (GIF,               gif);
-    REGISTER_ENCDEC (H261,              h261);
-    REGISTER_ENCDEC (H263,              h263);
-    REGISTER_DECODER(H263I,             h263i);
-    REGISTER_ENCDEC (H263P,             h263p);
-    REGISTER_DECODER(H263_V4L2M2M,      h263_v4l2m2m);
-    REGISTER_DECODER(H264,              h264);
-    REGISTER_DECODER(H264_CRYSTALHD,    h264_crystalhd);
-    REGISTER_DECODER(H264_V4L2M2M,      h264_v4l2m2m);
-    REGISTER_DECODER(H264_MEDIACODEC,   h264_mediacodec);
-    REGISTER_DECODER(H264_MMAL,         h264_mmal);
-    REGISTER_DECODER(H264_QSV,          h264_qsv);
-    REGISTER_DECODER(H264_RKMPP,        h264_rkmpp);
-    REGISTER_ENCDEC (HAP,               hap);
-    REGISTER_DECODER(HEVC,              hevc);
-    REGISTER_DECODER(HEVC_QSV,          hevc_qsv);
-    REGISTER_DECODER(HEVC_RKMPP,        hevc_rkmpp);
-    REGISTER_DECODER(HEVC_V4L2M2M,      hevc_v4l2m2m);
-    REGISTER_DECODER(HNM4_VIDEO,        hnm4_video);
-    REGISTER_DECODER(HQ_HQA,            hq_hqa);
-    REGISTER_DECODER(HQX,               hqx);
-    REGISTER_ENCDEC (HUFFYUV,           huffyuv);
-    REGISTER_DECODER(IDCIN,             idcin);
-    REGISTER_DECODER(IFF_ILBM,          iff_ilbm);
-    REGISTER_DECODER(INDEO2,            indeo2);
-    REGISTER_DECODER(INDEO3,            indeo3);
-    REGISTER_DECODER(INDEO4,            indeo4);
-    REGISTER_DECODER(INDEO5,            indeo5);
-    REGISTER_DECODER(INTERPLAY_VIDEO,   interplay_video);
-    REGISTER_ENCDEC (JPEG2000,          jpeg2000);
-    REGISTER_ENCDEC (JPEGLS,            jpegls);
-    REGISTER_DECODER(JV,                jv);
-    REGISTER_DECODER(KGV1,              kgv1);
-    REGISTER_DECODER(KMVC,              kmvc);
-    REGISTER_DECODER(LAGARITH,          lagarith);
-    REGISTER_ENCODER(LJPEG,             ljpeg);
-    REGISTER_DECODER(LOCO,              loco);
-    REGISTER_DECODER(M101,              m101);
-    REGISTER_ENCDEC (MAGICYUV,          magicyuv);
-    REGISTER_DECODER(MDEC,              mdec);
-    REGISTER_DECODER(MIMIC,             mimic);
-    REGISTER_ENCDEC (MJPEG,             mjpeg);
-    REGISTER_DECODER(MJPEGB,            mjpegb);
-    REGISTER_DECODER(MMVIDEO,           mmvideo);
-    REGISTER_DECODER(MOTIONPIXELS,      motionpixels);
-    REGISTER_ENCDEC (MPEG1VIDEO,        mpeg1video);
-    REGISTER_ENCDEC (MPEG2VIDEO,        mpeg2video);
-    REGISTER_ENCDEC (MPEG4,             mpeg4);
-    REGISTER_DECODER(MPEG4_CRYSTALHD,   mpeg4_crystalhd);
-    REGISTER_DECODER(MPEG4_V4L2M2M,     mpeg4_v4l2m2m);
-    REGISTER_DECODER(MPEG4_MMAL,        mpeg4_mmal);
-    REGISTER_DECODER(MPEGVIDEO,         mpegvideo);
-    REGISTER_DECODER(MPEG1_V4L2M2M,     mpeg1_v4l2m2m);
-    REGISTER_DECODER(MPEG2_MMAL,        mpeg2_mmal);
-    REGISTER_DECODER(MPEG2_CRYSTALHD,   mpeg2_crystalhd);
-    REGISTER_DECODER(MPEG2_V4L2M2M,     mpeg2_v4l2m2m);
-    REGISTER_DECODER(MPEG2_QSV,         mpeg2_qsv);
-    REGISTER_DECODER(MPEG2_MEDIACODEC,  mpeg2_mediacodec);
-    REGISTER_DECODER(MSA1,              msa1);
-    REGISTER_DECODER(MSCC,              mscc);
-    REGISTER_DECODER(MSMPEG4V1,         msmpeg4v1);
-    REGISTER_ENCDEC (MSMPEG4V2,         msmpeg4v2);
-    REGISTER_ENCDEC (MSMPEG4V3,         msmpeg4v3);
-    REGISTER_DECODER(MSMPEG4_CRYSTALHD, msmpeg4_crystalhd);
-    REGISTER_DECODER(MSRLE,             msrle);
-    REGISTER_DECODER(MSS1,              mss1);
-    REGISTER_DECODER(MSS2,              mss2);
-    REGISTER_ENCDEC (MSVIDEO1,          msvideo1);
-    REGISTER_DECODER(MSZH,              mszh);
-    REGISTER_DECODER(MTS2,              mts2);
-    REGISTER_DECODER(MVC1,              mvc1);
-    REGISTER_DECODER(MVC2,              mvc2);
-    REGISTER_DECODER(MXPEG,             mxpeg);
-    REGISTER_DECODER(NUV,               nuv);
-    REGISTER_DECODER(PAF_VIDEO,         paf_video);
-    REGISTER_ENCDEC (PAM,               pam);
-    REGISTER_ENCDEC (PBM,               pbm);
-    REGISTER_ENCDEC (PCX,               pcx);
-    REGISTER_ENCDEC (PGM,               pgm);
-    REGISTER_ENCDEC (PGMYUV,            pgmyuv);
-    REGISTER_DECODER(PICTOR,            pictor);
-    REGISTER_DECODER(PIXLET,            pixlet);
-    REGISTER_ENCDEC (PNG,               png);
-    REGISTER_ENCDEC (PPM,               ppm);
-    REGISTER_ENCDEC (PRORES,            prores);
-    REGISTER_ENCODER(PRORES_AW,         prores_aw);
-    REGISTER_ENCODER(PRORES_KS,         prores_ks);
-    REGISTER_DECODER(PRORES_LGPL,       prores_lgpl);
-    REGISTER_DECODER(PSD,               psd);
-    REGISTER_DECODER(PTX,               ptx);
-    REGISTER_DECODER(QDRAW,             qdraw);
-    REGISTER_DECODER(QPEG,              qpeg);
-    REGISTER_ENCDEC (QTRLE,             qtrle);
-    REGISTER_ENCDEC (R10K,              r10k);
-    REGISTER_ENCDEC (R210,              r210);
-    REGISTER_ENCDEC (RAWVIDEO,          rawvideo);
-    REGISTER_DECODER(RL2,               rl2);
-    REGISTER_ENCDEC (ROQ,               roq);
-    REGISTER_DECODER(RPZA,              rpza);
-    REGISTER_DECODER(RSCC,              rscc);
-    REGISTER_ENCDEC (RV10,              rv10);
-    REGISTER_ENCDEC (RV20,              rv20);
-    REGISTER_DECODER(RV30,              rv30);
-    REGISTER_DECODER(RV40,              rv40);
-    REGISTER_ENCDEC (S302M,             s302m);
-    REGISTER_DECODER(SANM,              sanm);
-    REGISTER_DECODER(SCPR,              scpr);
-    REGISTER_DECODER(SCREENPRESSO,      screenpresso);
-    REGISTER_DECODER(SDX2_DPCM,         sdx2_dpcm);
-    REGISTER_ENCDEC (SGI,               sgi);
-    REGISTER_DECODER(SGIRLE,            sgirle);
-    REGISTER_DECODER(SHEERVIDEO,        sheervideo);
-    REGISTER_DECODER(SMACKER,           smacker);
-    REGISTER_DECODER(SMC,               smc);
-    REGISTER_DECODER(SMVJPEG,           smvjpeg);
-    REGISTER_ENCDEC (SNOW,              snow);
-    REGISTER_DECODER(SP5X,              sp5x);
-    REGISTER_DECODER(SPEEDHQ,           speedhq);
-    REGISTER_DECODER(SRGC,              srgc);
-    REGISTER_ENCDEC (SUNRAST,           sunrast);
-    REGISTER_ENCDEC (SVQ1,              svq1);
-    REGISTER_DECODER(SVQ3,              svq3);
-    REGISTER_ENCDEC (TARGA,             targa);
-    REGISTER_DECODER(TARGA_Y216,        targa_y216);
-    REGISTER_DECODER(TDSC,              tdsc);
-    REGISTER_DECODER(THEORA,            theora);
-    REGISTER_DECODER(THP,               thp);
-    REGISTER_DECODER(TIERTEXSEQVIDEO,   tiertexseqvideo);
-    REGISTER_ENCDEC (TIFF,              tiff);
-    REGISTER_DECODER(TMV,               tmv);
-    REGISTER_DECODER(TRUEMOTION1,       truemotion1);
-    REGISTER_DECODER(TRUEMOTION2,       truemotion2);
-    REGISTER_DECODER(TRUEMOTION2RT,     truemotion2rt);
-    REGISTER_DECODER(TSCC,              tscc);
-    REGISTER_DECODER(TSCC2,             tscc2);
-    REGISTER_DECODER(TXD,               txd);
-    REGISTER_DECODER(ULTI,              ulti);
-    REGISTER_ENCDEC (UTVIDEO,           utvideo);
-    REGISTER_ENCDEC (V210,              v210);
-    REGISTER_DECODER(V210X,             v210x);
-    REGISTER_ENCDEC (V308,              v308);
-    REGISTER_ENCDEC (V408,              v408);
-    REGISTER_ENCDEC (V410,              v410);
-    REGISTER_DECODER(VB,                vb);
-    REGISTER_DECODER(VBLE,              vble);
-    REGISTER_DECODER(VC1,               vc1);
-    REGISTER_DECODER(VC1_CRYSTALHD,     vc1_crystalhd);
-    REGISTER_DECODER(VC1IMAGE,          vc1image);
-    REGISTER_DECODER(VC1_MMAL,          vc1_mmal);
-    REGISTER_DECODER(VC1_QSV,           vc1_qsv);
-    REGISTER_DECODER(VC1_V4L2M2M,       vc1_v4l2m2m);
-    REGISTER_ENCODER(VC2,               vc2);
-    REGISTER_DECODER(VCR1,              vcr1);
-    REGISTER_DECODER(VMDVIDEO,          vmdvideo);
-    REGISTER_DECODER(VMNC,              vmnc);
-    REGISTER_DECODER(VP3,               vp3);
-    REGISTER_DECODER(VP5,               vp5);
-    REGISTER_DECODER(VP6,               vp6);
-    REGISTER_DECODER(VP6A,              vp6a);
-    REGISTER_DECODER(VP6F,              vp6f);
-    REGISTER_DECODER(VP7,               vp7);
-    REGISTER_DECODER(VP8,               vp8);
-    REGISTER_DECODER(VP8_RKMPP,         vp8_rkmpp);
-    REGISTER_DECODER(VP8_V4L2M2M,       vp8_v4l2m2m);
-    REGISTER_DECODER(VP9,               vp9);
-    REGISTER_DECODER(VP9_RKMPP,         vp9_rkmpp);
-    REGISTER_DECODER(VP9_V4L2M2M,       vp9_v4l2m2m);
-    REGISTER_DECODER(VQA,               vqa);
-    REGISTER_DECODER(BITPACKED,         bitpacked);
-    REGISTER_DECODER(WEBP,              webp);
-    REGISTER_ENCDEC (WRAPPED_AVFRAME,   wrapped_avframe);
-    REGISTER_ENCDEC (WMV1,              wmv1);
-    REGISTER_ENCDEC (WMV2,              wmv2);
-    REGISTER_DECODER(WMV3,              wmv3);
-    REGISTER_DECODER(WMV3_CRYSTALHD,    wmv3_crystalhd);
-    REGISTER_DECODER(WMV3IMAGE,         wmv3image);
-    REGISTER_DECODER(WNV1,              wnv1);
-    REGISTER_DECODER(XAN_WC3,           xan_wc3);
-    REGISTER_DECODER(XAN_WC4,           xan_wc4);
-    REGISTER_ENCDEC (XBM,               xbm);
-    REGISTER_ENCDEC (XFACE,             xface);
-    REGISTER_DECODER(XL,                xl);
-    REGISTER_DECODER(XPM,               xpm);
-    REGISTER_ENCDEC (XWD,               xwd);
-    REGISTER_ENCDEC (Y41P,              y41p);
-    REGISTER_DECODER(YLC,               ylc);
-    REGISTER_DECODER(YOP,               yop);
-    REGISTER_ENCDEC (YUV4,              yuv4);
-    REGISTER_DECODER(ZERO12V,           zero12v);
-    REGISTER_DECODER(ZEROCODEC,         zerocodec);
-    REGISTER_ENCDEC (ZLIB,              zlib);
-    REGISTER_ENCDEC (ZMBV,              zmbv);
-
-    /* audio codecs */
-    REGISTER_ENCDEC (AAC,               aac);
-    REGISTER_DECODER(AAC_FIXED,         aac_fixed);
-    REGISTER_DECODER(AAC_LATM,          aac_latm);
-    REGISTER_ENCDEC (AC3,               ac3);
-    REGISTER_ENCDEC (AC3_FIXED,         ac3_fixed);
-    REGISTER_ENCDEC (ALAC,              alac);
-    REGISTER_DECODER(ALS,               als);
-    REGISTER_DECODER(AMRNB,             amrnb);
-    REGISTER_DECODER(AMRWB,             amrwb);
-    REGISTER_DECODER(APE,               ape);
-    REGISTER_ENCDEC (APTX,              aptx);
-    REGISTER_DECODER(ATRAC1,            atrac1);
-    REGISTER_DECODER(ATRAC3,            atrac3);
-    REGISTER_DECODER(ATRAC3AL,          atrac3al);
-    REGISTER_DECODER(ATRAC3P,           atrac3p);
-    REGISTER_DECODER(ATRAC3PAL,         atrac3pal);
-    REGISTER_DECODER(BINKAUDIO_DCT,     binkaudio_dct);
-    REGISTER_DECODER(BINKAUDIO_RDFT,    binkaudio_rdft);
-    REGISTER_DECODER(BMV_AUDIO,         bmv_audio);
-    REGISTER_DECODER(COOK,              cook);
-    REGISTER_ENCDEC (DCA,               dca);
-    REGISTER_DECODER(DOLBY_E,           dolby_e);
-    REGISTER_DECODER(DSD_LSBF,          dsd_lsbf);
-    REGISTER_DECODER(DSD_MSBF,          dsd_msbf);
-    REGISTER_DECODER(DSD_LSBF_PLANAR,   dsd_lsbf_planar);
-    REGISTER_DECODER(DSD_MSBF_PLANAR,   dsd_msbf_planar);
-    REGISTER_DECODER(DSICINAUDIO,       dsicinaudio);
-    REGISTER_DECODER(DSS_SP,            dss_sp);
-    REGISTER_DECODER(DST,               dst);
-    REGISTER_ENCDEC (EAC3,              eac3);
-    REGISTER_DECODER(EVRC,              evrc);
-    REGISTER_DECODER(FFWAVESYNTH,       ffwavesynth);
-    REGISTER_ENCDEC (FLAC,              flac);
-    REGISTER_ENCDEC (G723_1,            g723_1);
-    REGISTER_DECODER(G729,              g729);
-    REGISTER_DECODER(GSM,               gsm);
-    REGISTER_DECODER(GSM_MS,            gsm_ms);
-    REGISTER_DECODER(IAC,               iac);
-    REGISTER_DECODER(IMC,               imc);
-    REGISTER_DECODER(INTERPLAY_ACM,     interplay_acm);
-    REGISTER_DECODER(MACE3,             mace3);
-    REGISTER_DECODER(MACE6,             mace6);
-    REGISTER_DECODER(METASOUND,         metasound);
-    REGISTER_ENCDEC (MLP,               mlp);
-    REGISTER_DECODER(MP1,               mp1);
-    REGISTER_DECODER(MP1FLOAT,          mp1float);
-    REGISTER_ENCDEC (MP2,               mp2);
-    REGISTER_DECODER(MP2FLOAT,          mp2float);
-    REGISTER_ENCODER(MP2FIXED,          mp2fixed);
-    REGISTER_DECODER(MP3,               mp3);
-    REGISTER_DECODER(MP3FLOAT,          mp3float);
-    REGISTER_DECODER(MP3ADU,            mp3adu);
-    REGISTER_DECODER(MP3ADUFLOAT,       mp3adufloat);
-    REGISTER_DECODER(MP3ON4,            mp3on4);
-    REGISTER_DECODER(MP3ON4FLOAT,       mp3on4float);
-    REGISTER_DECODER(MPC7,              mpc7);
-    REGISTER_DECODER(MPC8,              mpc8);
-    REGISTER_ENCDEC (NELLYMOSER,        nellymoser);
-    REGISTER_DECODER(ON2AVC,            on2avc);
-    REGISTER_ENCDEC (OPUS,              opus);
-    REGISTER_DECODER(PAF_AUDIO,         paf_audio);
-    REGISTER_DECODER(QCELP,             qcelp);
-    REGISTER_DECODER(QDM2,              qdm2);
-    REGISTER_DECODER(QDMC,              qdmc);
-    REGISTER_ENCDEC (RA_144,            ra_144);
-    REGISTER_DECODER(RA_288,            ra_288);
-    REGISTER_DECODER(RALF,              ralf);
-    REGISTER_DECODER(SHORTEN,           shorten);
-    REGISTER_DECODER(SIPR,              sipr);
-    REGISTER_DECODER(SMACKAUD,          smackaud);
-    REGISTER_ENCDEC (SONIC,             sonic);
-    REGISTER_ENCODER(SONIC_LS,          sonic_ls);
-    REGISTER_DECODER(TAK,               tak);
-    REGISTER_ENCDEC (TRUEHD,            truehd);
-    REGISTER_DECODER(TRUESPEECH,        truespeech);
-    REGISTER_ENCDEC (TTA,               tta);
-    REGISTER_DECODER(TWINVQ,            twinvq);
-    REGISTER_DECODER(VMDAUDIO,          vmdaudio);
-    REGISTER_ENCDEC (VORBIS,            vorbis);
-    REGISTER_ENCDEC (WAVPACK,           wavpack);
-    REGISTER_DECODER(WMALOSSLESS,       wmalossless);
-    REGISTER_DECODER(WMAPRO,            wmapro);
-    REGISTER_ENCDEC (WMAV1,             wmav1);
-    REGISTER_ENCDEC (WMAV2,             wmav2);
-    REGISTER_DECODER(WMAVOICE,          wmavoice);
-    REGISTER_DECODER(WS_SND1,           ws_snd1);
-    REGISTER_DECODER(XMA1,              xma1);
-    REGISTER_DECODER(XMA2,              xma2);
-
-    /* PCM codecs */
-    REGISTER_ENCDEC (PCM_ALAW,          pcm_alaw);
-    REGISTER_DECODER(PCM_BLURAY,        pcm_bluray);
-    REGISTER_DECODER(PCM_DVD,           pcm_dvd);
-    REGISTER_DECODER(PCM_F16LE,         pcm_f16le);
-    REGISTER_DECODER(PCM_F24LE,         pcm_f24le);
-    REGISTER_ENCDEC (PCM_F32BE,         pcm_f32be);
-    REGISTER_ENCDEC (PCM_F32LE,         pcm_f32le);
-    REGISTER_ENCDEC (PCM_F64BE,         pcm_f64be);
-    REGISTER_ENCDEC (PCM_F64LE,         pcm_f64le);
-    REGISTER_DECODER(PCM_LXF,           pcm_lxf);
-    REGISTER_ENCDEC (PCM_MULAW,         pcm_mulaw);
-    REGISTER_ENCDEC (PCM_S8,            pcm_s8);
-    REGISTER_ENCDEC (PCM_S8_PLANAR,     pcm_s8_planar);
-    REGISTER_ENCDEC (PCM_S16BE,         pcm_s16be);
-    REGISTER_ENCDEC (PCM_S16BE_PLANAR,  pcm_s16be_planar);
-    REGISTER_ENCDEC (PCM_S16LE,         pcm_s16le);
-    REGISTER_ENCDEC (PCM_S16LE_PLANAR,  pcm_s16le_planar);
-    REGISTER_ENCDEC (PCM_S24BE,         pcm_s24be);
-    REGISTER_ENCDEC (PCM_S24DAUD,       pcm_s24daud);
-    REGISTER_ENCDEC (PCM_S24LE,         pcm_s24le);
-    REGISTER_ENCDEC (PCM_S24LE_PLANAR,  pcm_s24le_planar);
-    REGISTER_ENCDEC (PCM_S32BE,         pcm_s32be);
-    REGISTER_ENCDEC (PCM_S32LE,         pcm_s32le);
-    REGISTER_ENCDEC (PCM_S32LE_PLANAR,  pcm_s32le_planar);
-    REGISTER_ENCDEC (PCM_S64BE,         pcm_s64be);
-    REGISTER_ENCDEC (PCM_S64LE,         pcm_s64le);
-    REGISTER_ENCDEC (PCM_U8,            pcm_u8);
-    REGISTER_ENCDEC (PCM_U16BE,         pcm_u16be);
-    REGISTER_ENCDEC (PCM_U16LE,         pcm_u16le);
-    REGISTER_ENCDEC (PCM_U24BE,         pcm_u24be);
-    REGISTER_ENCDEC (PCM_U24LE,         pcm_u24le);
-    REGISTER_ENCDEC (PCM_U32BE,         pcm_u32be);
-    REGISTER_ENCDEC (PCM_U32LE,         pcm_u32le);
-    REGISTER_DECODER(PCM_ZORK,          pcm_zork);
-
-    /* DPCM codecs */
-    REGISTER_DECODER(GREMLIN_DPCM,      gremlin_dpcm);
-    REGISTER_DECODER(INTERPLAY_DPCM,    interplay_dpcm);
-    REGISTER_ENCDEC (ROQ_DPCM,          roq_dpcm);
-    REGISTER_DECODER(SOL_DPCM,          sol_dpcm);
-    REGISTER_DECODER(XAN_DPCM,          xan_dpcm);
-
-    /* ADPCM codecs */
-    REGISTER_DECODER(ADPCM_4XM,         adpcm_4xm);
-    REGISTER_ENCDEC (ADPCM_ADX,         adpcm_adx);
-    REGISTER_DECODER(ADPCM_AFC,         adpcm_afc);
-    REGISTER_DECODER(ADPCM_AICA,        adpcm_aica);
-    REGISTER_DECODER(ADPCM_CT,          adpcm_ct);
-    REGISTER_DECODER(ADPCM_DTK,         adpcm_dtk);
-    REGISTER_DECODER(ADPCM_EA,          adpcm_ea);
-    REGISTER_DECODER(ADPCM_EA_MAXIS_XA, adpcm_ea_maxis_xa);
-    REGISTER_DECODER(ADPCM_EA_R1,       adpcm_ea_r1);
-    REGISTER_DECODER(ADPCM_EA_R2,       adpcm_ea_r2);
-    REGISTER_DECODER(ADPCM_EA_R3,       adpcm_ea_r3);
-    REGISTER_DECODER(ADPCM_EA_XAS,      adpcm_ea_xas);
-    REGISTER_ENCDEC (ADPCM_G722,        adpcm_g722);
-    REGISTER_ENCDEC (ADPCM_G726,        adpcm_g726);
-    REGISTER_ENCDEC (ADPCM_G726LE,      adpcm_g726le);
-    REGISTER_DECODER(ADPCM_IMA_AMV,     adpcm_ima_amv);
-    REGISTER_DECODER(ADPCM_IMA_APC,     adpcm_ima_apc);
-    REGISTER_DECODER(ADPCM_IMA_DAT4,    adpcm_ima_dat4);
-    REGISTER_DECODER(ADPCM_IMA_DK3,     adpcm_ima_dk3);
-    REGISTER_DECODER(ADPCM_IMA_DK4,     adpcm_ima_dk4);
-    REGISTER_DECODER(ADPCM_IMA_EA_EACS, adpcm_ima_ea_eacs);
-    REGISTER_DECODER(ADPCM_IMA_EA_SEAD, adpcm_ima_ea_sead);
-    REGISTER_DECODER(ADPCM_IMA_ISS,     adpcm_ima_iss);
-    REGISTER_DECODER(ADPCM_IMA_OKI,     adpcm_ima_oki);
-    REGISTER_ENCDEC (ADPCM_IMA_QT,      adpcm_ima_qt);
-    REGISTER_DECODER(ADPCM_IMA_RAD,     adpcm_ima_rad);
-    REGISTER_DECODER(ADPCM_IMA_SMJPEG,  adpcm_ima_smjpeg);
-    REGISTER_ENCDEC (ADPCM_IMA_WAV,     adpcm_ima_wav);
-    REGISTER_DECODER(ADPCM_IMA_WS,      adpcm_ima_ws);
-    REGISTER_ENCDEC (ADPCM_MS,          adpcm_ms);
-    REGISTER_DECODER(ADPCM_MTAF,        adpcm_mtaf);
-    REGISTER_DECODER(ADPCM_PSX,         adpcm_psx);
-    REGISTER_DECODER(ADPCM_SBPRO_2,     adpcm_sbpro_2);
-    REGISTER_DECODER(ADPCM_SBPRO_3,     adpcm_sbpro_3);
-    REGISTER_DECODER(ADPCM_SBPRO_4,     adpcm_sbpro_4);
-    REGISTER_ENCDEC (ADPCM_SWF,         adpcm_swf);
-    REGISTER_DECODER(ADPCM_THP,         adpcm_thp);
-    REGISTER_DECODER(ADPCM_THP_LE,      adpcm_thp_le);
-    REGISTER_DECODER(ADPCM_VIMA,        adpcm_vima);
-    REGISTER_DECODER(ADPCM_XA,          adpcm_xa);
-    REGISTER_ENCDEC (ADPCM_YAMAHA,      adpcm_yamaha);
-
-    /* subtitles */
-    REGISTER_ENCDEC (SSA,               ssa);
-    REGISTER_ENCDEC (ASS,               ass);
-    REGISTER_DECODER(CCAPTION,          ccaption);
-    REGISTER_ENCDEC (DVBSUB,            dvbsub);
-    REGISTER_ENCDEC (DVDSUB,            dvdsub);
-    REGISTER_DECODER(JACOSUB,           jacosub);
-    REGISTER_DECODER(MICRODVD,          microdvd);
-    REGISTER_ENCDEC (MOVTEXT,           movtext);
-    REGISTER_DECODER(MPL2,              mpl2);
-    REGISTER_DECODER(PGSSUB,            pgssub);
-    REGISTER_DECODER(PJS,               pjs);
-    REGISTER_DECODER(REALTEXT,          realtext);
-    REGISTER_DECODER(SAMI,              sami);
-    REGISTER_ENCDEC (SRT,               srt);
-    REGISTER_DECODER(STL,               stl);
-    REGISTER_ENCDEC (SUBRIP,            subrip);
-    REGISTER_DECODER(SUBVIEWER,         subviewer);
-    REGISTER_DECODER(SUBVIEWER1,        subviewer1);
-    REGISTER_ENCDEC (TEXT,              text);
-    REGISTER_DECODER(VPLAYER,           vplayer);
-    REGISTER_ENCDEC (WEBVTT,            webvtt);
-    REGISTER_ENCDEC (XSUB,              xsub);
-
-    /* external libraries */
-    REGISTER_ENCDEC (AAC_AT,            aac_at);
-    REGISTER_DECODER(AC3_AT,            ac3_at);
-    REGISTER_DECODER(ADPCM_IMA_QT_AT,   adpcm_ima_qt_at);
-    REGISTER_ENCDEC (ALAC_AT,           alac_at);
-    REGISTER_DECODER(AMR_NB_AT,         amr_nb_at);
-    REGISTER_DECODER(EAC3_AT,           eac3_at);
-    REGISTER_DECODER(GSM_MS_AT,         gsm_ms_at);
-    REGISTER_ENCDEC (ILBC_AT,           ilbc_at);
-    REGISTER_DECODER(MP1_AT,            mp1_at);
-    REGISTER_DECODER(MP2_AT,            mp2_at);
-    REGISTER_DECODER(MP3_AT,            mp3_at);
-    REGISTER_ENCDEC (PCM_ALAW_AT,       pcm_alaw_at);
-    REGISTER_ENCDEC (PCM_MULAW_AT,      pcm_mulaw_at);
-    REGISTER_DECODER(QDMC_AT,           qdmc_at);
-    REGISTER_DECODER(QDM2_AT,           qdm2_at);
-    REGISTER_DECODER(LIBCELT,           libcelt);
-    REGISTER_ENCDEC (LIBFDK_AAC,        libfdk_aac);
-    REGISTER_ENCDEC (LIBGSM,            libgsm);
-    REGISTER_ENCDEC (LIBGSM_MS,         libgsm_ms);
-    REGISTER_ENCDEC (LIBILBC,           libilbc);
-    REGISTER_ENCODER(LIBMP3LAME,        libmp3lame);
-    REGISTER_ENCDEC (LIBOPENCORE_AMRNB, libopencore_amrnb);
-    REGISTER_DECODER(LIBOPENCORE_AMRWB, libopencore_amrwb);
-    REGISTER_ENCDEC (LIBOPENJPEG,       libopenjpeg);
-    REGISTER_ENCDEC (LIBOPUS,           libopus);
-    REGISTER_DECODER(LIBRSVG,           librsvg);
-    REGISTER_ENCODER(LIBSHINE,          libshine);
-    REGISTER_ENCDEC (LIBSPEEX,          libspeex);
-    REGISTER_ENCODER(LIBTHEORA,         libtheora);
-    REGISTER_ENCODER(LIBTWOLAME,        libtwolame);
-    REGISTER_ENCODER(LIBVO_AMRWBENC,    libvo_amrwbenc);
-    REGISTER_ENCDEC (LIBVORBIS,         libvorbis);
-    REGISTER_ENCDEC (LIBVPX_VP8,        libvpx_vp8);
-    REGISTER_ENCDEC (LIBVPX_VP9,        libvpx_vp9);
-    REGISTER_ENCODER(LIBWAVPACK,        libwavpack);
-    REGISTER_ENCODER(LIBWEBP_ANIM,      libwebp_anim);  /* preferred over libwebp */
-    REGISTER_ENCODER(LIBWEBP,           libwebp);
-    REGISTER_ENCODER(LIBX262,           libx262);
-    REGISTER_ENCODER(LIBX264,           libx264);
-    REGISTER_ENCODER(LIBX264RGB,        libx264rgb);
-    REGISTER_ENCODER(LIBX265,           libx265);
-    REGISTER_ENCODER(LIBXAVS,           libxavs);
-    REGISTER_ENCODER(LIBXVID,           libxvid);
-    REGISTER_DECODER(LIBZVBI_TELETEXT,  libzvbi_teletext);
-
-    /* text */
-    REGISTER_DECODER(BINTEXT,           bintext);
-    REGISTER_DECODER(XBIN,              xbin);
-    REGISTER_DECODER(IDF,               idf);
-
-    /* external libraries, that shouldn't be used by default if one of the
-     * above is available */
-    REGISTER_ENCODER(H263_V4L2M2M,      h263_v4l2m2m);
-    REGISTER_ENCDEC (LIBOPENH264,       libopenh264);
-    REGISTER_ENCODER(H264_AMF,          h264_amf);
-    REGISTER_DECODER(H264_CUVID,        h264_cuvid);
-    REGISTER_ENCODER(H264_NVENC,        h264_nvenc);
-    REGISTER_ENCODER(H264_OMX,          h264_omx);
-    REGISTER_ENCODER(H264_QSV,          h264_qsv);
-    REGISTER_ENCODER(H264_V4L2M2M,      h264_v4l2m2m);
-    REGISTER_ENCODER(H264_VAAPI,        h264_vaapi);
-    REGISTER_ENCODER(H264_VIDEOTOOLBOX, h264_videotoolbox);
-#if FF_API_NVENC_OLD_NAME
-    REGISTER_ENCODER(NVENC,             nvenc);
-    REGISTER_ENCODER(NVENC_H264,        nvenc_h264);
-    REGISTER_ENCODER(NVENC_HEVC,        nvenc_hevc);
-#endif
-    REGISTER_ENCODER(HEVC_AMF,          hevc_amf);
-    REGISTER_DECODER(HEVC_CUVID,        hevc_cuvid);
-    REGISTER_DECODER(HEVC_MEDIACODEC,   hevc_mediacodec);
-    REGISTER_ENCODER(HEVC_NVENC,        hevc_nvenc);
-    REGISTER_ENCODER(HEVC_QSV,          hevc_qsv);
-    REGISTER_ENCODER(HEVC_V4L2M2M,      hevc_v4l2m2m);
-    REGISTER_ENCODER(HEVC_VAAPI,        hevc_vaapi);
-    REGISTER_ENCODER(HEVC_VIDEOTOOLBOX, hevc_videotoolbox);
-    REGISTER_ENCODER(LIBKVAZAAR,        libkvazaar);
-    REGISTER_DECODER(MJPEG_CUVID,       mjpeg_cuvid);
-    REGISTER_ENCODER(MJPEG_QSV,         mjpeg_qsv);
-    REGISTER_ENCODER(MJPEG_VAAPI,       mjpeg_vaapi);
-    REGISTER_DECODER(MPEG1_CUVID,       mpeg1_cuvid);
-    REGISTER_DECODER(MPEG2_CUVID,       mpeg2_cuvid);
-    REGISTER_ENCODER(MPEG2_QSV,         mpeg2_qsv);
-    REGISTER_ENCODER(MPEG2_VAAPI,       mpeg2_vaapi);
-    REGISTER_DECODER(MPEG4_CUVID,       mpeg4_cuvid);
-    REGISTER_DECODER(MPEG4_MEDIACODEC,  mpeg4_mediacodec);
-    REGISTER_ENCODER(MPEG4_V4L2M2M,     mpeg4_v4l2m2m);
-    REGISTER_DECODER(VC1_CUVID,         vc1_cuvid);
-    REGISTER_DECODER(VP8_CUVID,         vp8_cuvid);
-    REGISTER_DECODER(VP8_MEDIACODEC,    vp8_mediacodec);
-    REGISTER_DECODER(VP8_QSV,           vp8_qsv);
-    REGISTER_ENCODER(VP8_V4L2M2M,       vp8_v4l2m2m);
-    REGISTER_ENCODER(VP8_VAAPI,         vp8_vaapi);
-    REGISTER_DECODER(VP9_CUVID,         vp9_cuvid);
-    REGISTER_DECODER(VP9_MEDIACODEC,    vp9_mediacodec);
-    REGISTER_ENCODER(VP9_VAAPI,         vp9_vaapi);
-
-    /* parsers */
-    REGISTER_PARSER(AAC,                aac);
-    REGISTER_PARSER(AAC_LATM,           aac_latm);
-    REGISTER_PARSER(AC3,                ac3);
-    REGISTER_PARSER(ADX,                adx);
-    REGISTER_PARSER(BMP,                bmp);
-    REGISTER_PARSER(CAVSVIDEO,          cavsvideo);
-    REGISTER_PARSER(COOK,               cook);
-    REGISTER_PARSER(DCA,                dca);
-    REGISTER_PARSER(DIRAC,              dirac);
-    REGISTER_PARSER(DNXHD,              dnxhd);
-    REGISTER_PARSER(DPX,                dpx);
-    REGISTER_PARSER(DVAUDIO,            dvaudio);
-    REGISTER_PARSER(DVBSUB,             dvbsub);
-    REGISTER_PARSER(DVDSUB,             dvdsub);
-    REGISTER_PARSER(DVD_NAV,            dvd_nav);
-    REGISTER_PARSER(FLAC,               flac);
-    REGISTER_PARSER(G729,               g729);
-    REGISTER_PARSER(GSM,                gsm);
-    REGISTER_PARSER(H261,               h261);
-    REGISTER_PARSER(H263,               h263);
-    REGISTER_PARSER(H264,               h264);
-    REGISTER_PARSER(HEVC,               hevc);
-    REGISTER_PARSER(MJPEG,              mjpeg);
-    REGISTER_PARSER(MLP,                mlp);
-    REGISTER_PARSER(MPEG4VIDEO,         mpeg4video);
-    REGISTER_PARSER(MPEGAUDIO,          mpegaudio);
-    REGISTER_PARSER(MPEGVIDEO,          mpegvideo);
-    REGISTER_PARSER(OPUS,               opus);
-    REGISTER_PARSER(PNG,                png);
-    REGISTER_PARSER(PNM,                pnm);
-    REGISTER_PARSER(RV30,               rv30);
-    REGISTER_PARSER(RV40,               rv40);
-    REGISTER_PARSER(SIPR,               sipr);
-    REGISTER_PARSER(TAK,                tak);
-    REGISTER_PARSER(VC1,                vc1);
-    REGISTER_PARSER(VORBIS,             vorbis);
-    REGISTER_PARSER(VP3,                vp3);
-    REGISTER_PARSER(VP8,                vp8);
-    REGISTER_PARSER(VP9,                vp9);
-    REGISTER_PARSER(XMA,                xma);
+    pthread_once(&av_codec_next_init, av_codec_init_next);
+}
+
+AVCodec *av_codec_next(const AVCodec *c)
+{
+    pthread_once(&av_codec_next_init, av_codec_init_next);
+
+    if (c)
+        return c->next;
+    else
+        return (AVCodec*)codec_list[0];
 }
 
 void avcodec_register_all(void)
 {
-    static AVOnce control = AV_ONCE_INIT;
+    pthread_once(&av_codec_next_init, av_codec_init_next);
+}
+#endif
+
+static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
+{
+    switch(id){
+        //This is for future deprecatec codec ids, its empty since
+        //last major bump but will fill up again over time, please don't remove it
+        default                                         : return id;
+    }
+}
+
+static AVCodec *find_codec(enum AVCodecID id, int (*x)(const AVCodec *))
+{
+    const AVCodec *p, *experimental = NULL;
+    void *i = 0;
+
+    id = remap_deprecated_codec_id(id);
+
+    while ((p = av_codec_iterate(&i))) {
+        if (!x(p))
+            continue;
+        if (p->id == id) {
+            if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
+                experimental = p;
+            } else
+                return (AVCodec*)p;
+        }
+    }
 
-    ff_thread_once(&control, register_all);
+    return (AVCodec*)experimental;
+}
+
+AVCodec *avcodec_find_encoder(enum AVCodecID id)
+{
+    return find_codec(id, av_codec_is_encoder);
+}
+
+AVCodec *avcodec_find_decoder(enum AVCodecID id)
+{
+    return find_codec(id, av_codec_is_decoder);
+}
+
+static AVCodec *find_codec_by_name(const char *name, int (*x)(const AVCodec *))
+{
+    void *i = 0;
+    const AVCodec *p;
+
+    if (!name)
+        return NULL;
+
+    while ((p = av_codec_iterate(&i))) {
+        if (!x(p))
+            continue;
+        if (strcmp(name, p->name) == 0)
+            return (AVCodec*)p;
+    }
+
+    return NULL;
+}
+
+AVCodec *avcodec_find_encoder_by_name(const char *name)
+{
+    return find_codec_by_name(name, av_codec_is_encoder);
+}
+
+AVCodec *avcodec_find_decoder_by_name(const char *name)
+{
+    return find_codec_by_name(name, av_codec_is_decoder);
 }
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index c13deb5..5d1dd50 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -3979,11 +3979,25 @@  typedef struct AVCodecParameters {
 } AVCodecParameters;
 
 /**
+ * Iterate over all registered codecs.
+ *
+ * @param opaque a pointer where libavcodec will store the iteration state. Must
+ *               point to NULL to start the iteration.
+ *
+ * @return the next registered codec or NULL when the iteration is
+ *         finished
+ */
+const AVCodec *av_codec_iterate(void **opaque);
+
+#if FF_API_NEXT
+/**
  * If c is NULL, returns the first registered codec,
  * if c is non-NULL, returns the next registered codec after c,
  * or NULL if c is the last one.
  */
+attribute_deprecated
 AVCodec *av_codec_next(const AVCodec *c);
+#endif
 
 /**
  * Return the LIBAVCODEC_VERSION_INT constant.
@@ -4000,6 +4014,7 @@  const char *avcodec_configuration(void);
  */
 const char *avcodec_license(void);
 
+#if FF_API_NEXT
 /**
  * Register the codec codec and initialize libavcodec.
  *
@@ -4008,6 +4023,7 @@  const char *avcodec_license(void);
  *
  * @see avcodec_register_all()
  */
+attribute_deprecated
 void avcodec_register(AVCodec *codec);
 
 /**
@@ -4020,7 +4036,9 @@  void avcodec_register(AVCodec *codec);
  * @see av_register_codec_parser
  * @see av_register_bitstream_filter
  */
+attribute_deprecated
 void avcodec_register_all(void);
+#endif
 
 /**
  * Allocate an AVCodecContext and set its fields to default values. The
@@ -5120,8 +5138,21 @@  typedef struct AVCodecParser {
     struct AVCodecParser *next;
 } AVCodecParser;
 
+/**
+ * Iterate over all registered codec parsers.
+ *
+ * @param opaque a pointer where libavcodec will store the iteration state. Must
+ *               point to NULL to start the iteration.
+ *
+ * @return the next registered codec parser or NULL when the iteration is
+ *         finished
+ */
+const AVCodecParser *av_parser_iterate(void **opaque);
+
+attribute_deprecated
 AVCodecParser *av_parser_next(const AVCodecParser *c);
 
+attribute_deprecated
 void av_register_codec_parser(AVCodecParser *parser);
 AVCodecParserContext *av_parser_init(int codec_id);
 
diff --git a/libavcodec/parser.c b/libavcodec/parser.c
index 670680e..76532e2 100644
--- a/libavcodec/parser.c
+++ b/libavcodec/parser.c
@@ -32,33 +32,104 @@ 
 #include "internal.h"
 #include "parser.h"
 
-static AVCodecParser *av_first_parser = NULL;
+#include "pthread.h"
+
+/* Parsers */
+extern AVCodecParser ff_aac_parser;
+extern AVCodecParser ff_aac_latm_parser;
+extern AVCodecParser ff_ac3_parser;
+extern AVCodecParser ff_adx_parser;
+extern AVCodecParser ff_bmp_parser;
+extern AVCodecParser ff_cavsvideo_parser;
+extern AVCodecParser ff_cook_parser;
+extern AVCodecParser ff_dca_parser;
+extern AVCodecParser ff_dirac_parser;
+extern AVCodecParser ff_dnxhd_parser;
+extern AVCodecParser ff_dpx_parser;
+extern AVCodecParser ff_dvaudio_parser;
+extern AVCodecParser ff_dvbsub_parser;
+extern AVCodecParser ff_dvdsub_parser;
+extern AVCodecParser ff_dvd_nav_parser;
+extern AVCodecParser ff_flac_parser;
+extern AVCodecParser ff_g729_parser;
+extern AVCodecParser ff_gsm_parser;
+extern AVCodecParser ff_h261_parser;
+extern AVCodecParser ff_h263_parser;
+extern AVCodecParser ff_h264_parser;
+extern AVCodecParser ff_hevc_parser;
+extern AVCodecParser ff_mjpeg_parser;
+extern AVCodecParser ff_mlp_parser;
+extern AVCodecParser ff_mpeg4video_parser;
+extern AVCodecParser ff_mpegaudio_parser;
+extern AVCodecParser ff_mpegvideo_parser;
+extern AVCodecParser ff_opus_parser;
+extern AVCodecParser ff_png_parser;
+extern AVCodecParser ff_pnm_parser;
+extern AVCodecParser ff_rv30_parser;
+extern AVCodecParser ff_rv40_parser;
+extern AVCodecParser ff_sipr_parser;
+extern AVCodecParser ff_tak_parser;
+extern AVCodecParser ff_vc1_parser;
+extern AVCodecParser ff_vorbis_parser;
+extern AVCodecParser ff_vp3_parser;
+extern AVCodecParser ff_vp8_parser;
+extern AVCodecParser ff_vp9_parser;
+extern AVCodecParser ff_xma_parser;
+
+#include "parser_list.c"
+
+pthread_once_t av_parser_next_init = PTHREAD_ONCE_INIT;
+
+static void av_parser_init_next(void)
+{
+    AVCodecParser *prev = NULL, *p;
+    int i = 0;
+    while ((p = (AVCodecParser*)parser_list[i++])) {
+        if (prev)
+            prev->next = p;
+        prev = p;
+    }
+    if (prev)
+        prev->next = NULL;
+}
 
 AVCodecParser *av_parser_next(const AVCodecParser *p)
 {
+    pthread_once(&av_parser_next_init, av_parser_init_next);
+
     if (p)
         return p->next;
     else
-        return av_first_parser;
+        return (AVCodecParser*)parser_list[0];
+}
+
+const AVCodecParser *av_parser_iterate(void **opaque)
+{
+    uintptr_t i = (uintptr_t)*opaque;
+    const AVCodecParser *p = parser_list[i];
+
+    if (p)
+        *opaque = (void*)(i + 1);
+
+    return p;
 }
 
 void av_register_codec_parser(AVCodecParser *parser)
 {
-    do {
-        parser->next = av_first_parser;
-    } while (parser->next != avpriv_atomic_ptr_cas((void * volatile *)&av_first_parser, parser->next, parser));
+    pthread_once(&av_parser_next_init, av_parser_init_next);
 }
 
 AVCodecParserContext *av_parser_init(int codec_id)
 {
     AVCodecParserContext *s = NULL;
-    AVCodecParser *parser;
+    const AVCodecParser *parser;
+    void *i = 0;
     int ret;
 
     if (codec_id == AV_CODEC_ID_NONE)
         return NULL;
 
-    for (parser = av_first_parser; parser; parser = parser->next) {
+    while ((parser = av_parser_iterate(&i))) {
         if (parser->codec_ids[0] == codec_id ||
             parser->codec_ids[1] == codec_id ||
             parser->codec_ids[2] == codec_id ||
@@ -72,7 +143,7 @@  found:
     s = av_mallocz(sizeof(AVCodecParserContext));
     if (!s)
         goto err_out;
-    s->parser = parser;
+    s->parser = (AVCodecParser*)parser;
     s->priv_data = av_mallocz(parser->priv_data_size);
     if (!s->priv_data)
         goto err_out;
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index dfbfe98..b7cba6a 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -47,7 +47,6 @@ 
 #include "decode.h"
 #include "hwaccel.h"
 #include "libavutil/opt.h"
-#include "me_cmp.h"
 #include "mpegvideo.h"
 #include "thread.h"
 #include "frame_thread_encoder.h"
@@ -93,30 +92,6 @@  void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
         memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
 }
 
-/* encoder management */
-static AVCodec *first_avcodec = NULL;
-static AVCodec **last_avcodec = &first_avcodec;
-
-AVCodec *av_codec_next(const AVCodec *c)
-{
-    if (c)
-        return c->next;
-    else
-        return first_avcodec;
-}
-
-static av_cold void avcodec_init(void)
-{
-    static int initialized = 0;
-
-    if (initialized != 0)
-        return;
-    initialized = 1;
-
-    if (CONFIG_ME_CMP)
-        ff_me_cmp_init_static();
-}
-
 int av_codec_is_encoder(const AVCodec *codec)
 {
     return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
@@ -127,21 +102,6 @@  int av_codec_is_decoder(const AVCodec *codec)
     return codec && (codec->decode || codec->receive_frame);
 }
 
-av_cold void avcodec_register(AVCodec *codec)
-{
-    AVCodec **p;
-    avcodec_init();
-    p = last_avcodec;
-    codec->next = NULL;
-
-    while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
-        p = &(*p)->next;
-    last_avcodec = &codec->next;
-
-    if (codec->init_static_data)
-        codec->init_static_data(codec);
-}
-
 int ff_set_dimensions(AVCodecContext *s, int width, int height)
 {
     int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
@@ -1162,71 +1122,6 @@  FF_ENABLE_DEPRECATION_WARNINGS
     return 0;
 }
 
-static enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id)
-{
-    switch(id){
-        //This is for future deprecatec codec ids, its empty since
-        //last major bump but will fill up again over time, please don't remove it
-        default                                         : return id;
-    }
-}
-
-static AVCodec *find_encdec(enum AVCodecID id, int encoder)
-{
-    AVCodec *p, *experimental = NULL;
-    p = first_avcodec;
-    id= remap_deprecated_codec_id(id);
-    while (p) {
-        if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
-            p->id == id) {
-            if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
-                experimental = p;
-            } else
-                return p;
-        }
-        p = p->next;
-    }
-    return experimental;
-}
-
-AVCodec *avcodec_find_encoder(enum AVCodecID id)
-{
-    return find_encdec(id, 1);
-}
-
-AVCodec *avcodec_find_encoder_by_name(const char *name)
-{
-    AVCodec *p;
-    if (!name)
-        return NULL;
-    p = first_avcodec;
-    while (p) {
-        if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
-            return p;
-        p = p->next;
-    }
-    return NULL;
-}
-
-AVCodec *avcodec_find_decoder(enum AVCodecID id)
-{
-    return find_encdec(id, 0);
-}
-
-AVCodec *avcodec_find_decoder_by_name(const char *name)
-{
-    AVCodec *p;
-    if (!name)
-        return NULL;
-    p = first_avcodec;
-    while (p) {
-        if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
-            return p;
-        p = p->next;
-    }
-    return NULL;
-}
-
 const char *avcodec_get_name(enum AVCodecID id)
 {
     const AVCodecDescriptor *cd;
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 47a15d5..8cc0f9b 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -129,6 +129,9 @@ 
 #ifndef FF_API_LOCKMGR
 #define FF_API_LOCKMGR (LIBAVCODEC_VERSION_MAJOR < 59)
 #endif
+#ifndef FF_API_NEXT
+#define FF_API_NEXT              (LIBAVCODEC_VERSION_MAJOR < 59)
+#endif
 
 
 #endif /* AVCODEC_VERSION_H */