libavcodec/options.c - manifest_repos/ffmpeg - Git at Google

 /*
  * Copyright (c) 2001 Fabrice Bellard
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */

 /**
  * @file
  * Options definition for AVCodecContext.
  */

 #include "avcodec.h"
 #include "internal.h"
 #include "libavutil/avassert.h"
 #include "libavutil/internal.h"
 #include "libavutil/mem.h"
 #include "libavutil/opt.h"
 #include <string.h>

 FF_DISABLE_DEPRECATION_WARNINGS
 #include "options_table.h"
 FF_ENABLE_DEPRECATION_WARNINGS

 static const char* context_to_name(void* ptr) {
     AVCodecContext *avc= ptr;

     if(avc && avc->codec && avc->codec->name)
         return avc->codec->name;
     else
         return "NULL";
 }

 static void *codec_child_next(void *obj, void *prev)
 {
     AVCodecContext *s = obj;
     if (!prev && s->codec && s->codec->priv_class && s->priv_data)
         return s->priv_data;
     return NULL;
 }

 #if FF_API_CHILD_CLASS_NEXT
 static const AVClass *codec_child_class_next(const AVClass *prev)
 {
     void *iter = NULL;
     const AVCodec *c = NULL;

     /* find the codec that corresponds to prev */
     while (prev && (c = av_codec_iterate(&iter)))
         if (c->priv_class == prev)
             break;

     /* find next codec with priv options */
     while (c = av_codec_iterate(&iter))
         if (c->priv_class)
             return c->priv_class;
     return NULL;
 }
 #endif

 static const AVClass *codec_child_class_iterate(void **iter)
 {
     const AVCodec *c;
     /* find next codec with priv options */
     while (c = av_codec_iterate(iter))
         if (c->priv_class)
             return c->priv_class;
     return NULL;
 }

 static AVClassCategory get_category(void *ptr)
 {
     AVCodecContext* avctx = ptr;
     if(avctx->codec && avctx->codec->decode) return AV_CLASS_CATEGORY_DECODER;
     else                                     return AV_CLASS_CATEGORY_ENCODER;
 }

 static const AVClass av_codec_context_class = {
     .class_name              = "AVCodecContext",
     .item_name               = context_to_name,
     .option                  = avcodec_options,
     .version                 = LIBAVUTIL_VERSION_INT,
     .log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
     .child_next              = codec_child_next,
 #if FF_API_CHILD_CLASS_NEXT
     .child_class_next        = codec_child_class_next,
 #endif
     .child_class_iterate     = codec_child_class_iterate,
     .category                = AV_CLASS_CATEGORY_ENCODER,
     .get_category            = get_category,
 };

 static int init_context_defaults(AVCodecContext *s, const AVCodec *codec)
 {
     int flags=0;
     memset(s, 0, sizeof(AVCodecContext));

     s->av_class = &av_codec_context_class;

     s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN;
     if (codec) {
         s->codec = codec;
         s->codec_id = codec->id;
     }

     if(s->codec_type == AVMEDIA_TYPE_AUDIO)
         flags= AV_OPT_FLAG_AUDIO_PARAM;
     else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
         flags= AV_OPT_FLAG_VIDEO_PARAM;
     else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE)
         flags= AV_OPT_FLAG_SUBTITLE_PARAM;
     av_opt_set_defaults2(s, flags, flags);

     s->time_base           = (AVRational){0,1};
     s->framerate           = (AVRational){ 0, 1 };
     s->pkt_timebase        = (AVRational){ 0, 1 };
     s->get_buffer2         = avcodec_default_get_buffer2;
     s->get_format          = avcodec_default_get_format;
     s->execute             = avcodec_default_execute;
     s->execute2            = avcodec_default_execute2;
     s->sample_aspect_ratio = (AVRational){0,1};
     s->pix_fmt             = AV_PIX_FMT_NONE;
     s->sw_pix_fmt          = AV_PIX_FMT_NONE;
     s->sample_fmt          = AV_SAMPLE_FMT_NONE;

     s->reordered_opaque    = AV_NOPTS_VALUE;
     if(codec && codec->priv_data_size){
         if(!s->priv_data){
             s->priv_data= av_mallocz(codec->priv_data_size);
             if (!s->priv_data) {
                 return AVERROR(ENOMEM);
             }
         }
         if(codec->priv_class){
             *(const AVClass**)s->priv_data = codec->priv_class;
             av_opt_set_defaults(s->priv_data);
         }
     }
     if (codec && codec->defaults) {
         int ret;
         const AVCodecDefault *d = codec->defaults;
         while (d->key) {
             ret = av_opt_set(s, d->key, d->value, 0);
             av_assert0(ret >= 0);
             d++;
         }
     }
     return 0;
 }

 #if FF_API_GET_CONTEXT_DEFAULTS
 int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec)
 {
     return init_context_defaults(s, codec);
 }
 #endif

 AVCodecContext *avcodec_alloc_context3(const AVCodec *codec)
 {
     AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));

     if (!avctx)
         return NULL;

     if (init_context_defaults(avctx, codec) < 0) {
         av_free(avctx);
         return NULL;
     }

     return avctx;
 }

 void avcodec_free_context(AVCodecContext **pavctx)
 {
     AVCodecContext *avctx = *pavctx;

     if (!avctx)
         return;

     avcodec_close(avctx);

     av_freep(&avctx->extradata);
     av_freep(&avctx->subtitle_header);
     av_freep(&avctx->intra_matrix);
     av_freep(&avctx->inter_matrix);
     av_freep(&avctx->rc_override);

     av_freep(pavctx);
 }

 #if FF_API_COPY_CONTEXT
 static void copy_context_reset(AVCodecContext *avctx)
 {
     int i;

     av_opt_free(avctx);
 #if FF_API_CODED_FRAME
 FF_DISABLE_DEPRECATION_WARNINGS
     av_frame_free(&avctx->coded_frame);
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif
     av_freep(&avctx->rc_override);
     av_freep(&avctx->intra_matrix);
     av_freep(&avctx->inter_matrix);
     av_freep(&avctx->extradata);
     av_freep(&avctx->subtitle_header);
     av_buffer_unref(&avctx->hw_frames_ctx);
     av_buffer_unref(&avctx->hw_device_ctx);
     for (i = 0; i < avctx->nb_coded_side_data; i++)
         av_freep(&avctx->coded_side_data[i].data);
     av_freep(&avctx->coded_side_data);
     avctx->subtitle_header_size = 0;
     avctx->nb_coded_side_data = 0;
     avctx->extradata_size = 0;
 }

 int avcodec_copy_context(AVCodecContext *dest, const AVCodecContext *src)
 {
     const AVCodec *orig_codec = dest->codec;
     uint8_t *orig_priv_data = dest->priv_data;

     if (avcodec_is_open(dest)) { // check that the dest context is uninitialized
         av_log(dest, AV_LOG_ERROR,
                "Tried to copy AVCodecContext %p into already-initialized %p\n",
                src, dest);
         return AVERROR(EINVAL);
     }

     copy_context_reset(dest);

     memcpy(dest, src, sizeof(*dest));
     av_opt_copy(dest, src);

     dest->priv_data       = orig_priv_data;
     dest->codec           = orig_codec;

     if (orig_priv_data && src->codec && src->codec->priv_class &&
         dest->codec && dest->codec->priv_class)
         av_opt_copy(orig_priv_data, src->priv_data);


     /* set values specific to opened codecs back to their default state */
     dest->slice_offset    = NULL;
     dest->hwaccel         = NULL;
     dest->internal        = NULL;
 #if FF_API_CODED_FRAME
 FF_DISABLE_DEPRECATION_WARNINGS
     dest->coded_frame     = NULL;
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif

     /* reallocate values that should be allocated separately */
     dest->extradata       = NULL;
     dest->coded_side_data = NULL;
     dest->intra_matrix    = NULL;
     dest->inter_matrix    = NULL;
     dest->rc_override     = NULL;
     dest->subtitle_header = NULL;
     dest->hw_frames_ctx   = NULL;
     dest->hw_device_ctx   = NULL;
     dest->nb_coded_side_data = 0;

 #define alloc_and_copy_or_fail(obj, size, pad) \
     if (src->obj && size > 0) { \
         dest->obj = av_malloc(size + pad); \
         if (!dest->obj) \
             goto fail; \
         memcpy(dest->obj, src->obj, size); \
         if (pad) \
             memset(((uint8_t *) dest->obj) + size, 0, pad); \
     }
     alloc_and_copy_or_fail(extradata,    src->extradata_size,
                            AV_INPUT_BUFFER_PADDING_SIZE);
     dest->extradata_size  = src->extradata_size;
     alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0);
     alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0);
     alloc_and_copy_or_fail(rc_override,  src->rc_override_count * sizeof(*src->rc_override), 0);
     alloc_and_copy_or_fail(subtitle_header, src->subtitle_header_size, 1);
     av_assert0(dest->subtitle_header_size == src->subtitle_header_size);
 #undef alloc_and_copy_or_fail

     if (src->hw_frames_ctx) {
         dest->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx);
         if (!dest->hw_frames_ctx)
             goto fail;
     }

     return 0;

 fail:
     copy_context_reset(dest);
     return AVERROR(ENOMEM);
 }
 #endif

 const AVClass *avcodec_get_class(void)
 {
     return &av_codec_context_class;
 }

 #define FOFFSET(x) offsetof(AVFrame,x)

 static const AVOption frame_options[]={
 {"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
 {"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
 {"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
 {"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
 {"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
 {"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
 {"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
 {"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
 {"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
 {NULL},
 };

 #if FF_API_COPY_CONTEXT
 static const AVClass av_frame_class = {
     .class_name              = "AVFrame",
     .item_name               = NULL,
     .option                  = frame_options,
     .version                 = LIBAVUTIL_VERSION_INT,
 };

 const AVClass *avcodec_get_frame_class(void)
 {
     return &av_frame_class;
 }
 #endif

 #define SROFFSET(x) offsetof(AVSubtitleRect,x)

 static const AVOption subtitle_rect_options[]={
 {"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
 {"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
 {"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
 {"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
 {"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
 {"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
 {"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
 {NULL},
 };

 #if FF_API_COPY_CONTEXT
 static const AVClass av_subtitle_rect_class = {
     .class_name             = "AVSubtitleRect",
     .item_name              = NULL,
     .option                 = subtitle_rect_options,
     .version                = LIBAVUTIL_VERSION_INT,
 };

 const AVClass *avcodec_get_subtitle_rect_class(void)
 {
     return &av_subtitle_rect_class;
 }
 #endif
	/*
	* Copyright (c) 2001 Fabrice Bellard
	* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
	*
	* This file is part of FFmpeg.
	*
	* FFmpeg is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* FFmpeg is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with FFmpeg; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	/**
	* @file
	* Options definition for AVCodecContext.
	*/

	#include "avcodec.h"
	#include "internal.h"
	#include "libavutil/avassert.h"
	#include "libavutil/internal.h"
	#include "libavutil/mem.h"
	#include "libavutil/opt.h"
	#include <string.h>

	FF_DISABLE_DEPRECATION_WARNINGS
	#include "options_table.h"
	FF_ENABLE_DEPRECATION_WARNINGS

	static const char* context_to_name(void* ptr) {
	AVCodecContext *avc= ptr;

	if(avc && avc->codec && avc->codec->name)
	return avc->codec->name;
	else
	return "NULL";
	}

	static void codec_child_next(void obj, void *prev)
	{
	AVCodecContext *s = obj;
	if (!prev && s->codec && s->codec->priv_class && s->priv_data)
	return s->priv_data;
	return NULL;
	}

	#if FF_API_CHILD_CLASS_NEXT
	static const AVClass codec_child_class_next(const AVClass prev)
	{
	void *iter = NULL;
	const AVCodec *c = NULL;

	/* find the codec that corresponds to prev */
	while (prev && (c = av_codec_iterate(&iter)))
	if (c->priv_class == prev)
	break;

	/* find next codec with priv options */
	while (c = av_codec_iterate(&iter))
	if (c->priv_class)
	return c->priv_class;
	return NULL;
	}
	#endif

	static const AVClass codec_child_class_iterate(void *iter)
	{
	const AVCodec *c;
	/* find next codec with priv options */
	while (c = av_codec_iterate(iter))
	if (c->priv_class)
	return c->priv_class;
	return NULL;
	}

	static AVClassCategory get_category(void *ptr)
	{
	AVCodecContext* avctx = ptr;
	if(avctx->codec && avctx->codec->decode) return AV_CLASS_CATEGORY_DECODER;
	else return AV_CLASS_CATEGORY_ENCODER;
	}

	static const AVClass av_codec_context_class = {
	.class_name = "AVCodecContext",
	.item_name = context_to_name,
	.option = avcodec_options,
	.version = LIBAVUTIL_VERSION_INT,
	.log_level_offset_offset = offsetof(AVCodecContext, log_level_offset),
	.child_next = codec_child_next,
	#if FF_API_CHILD_CLASS_NEXT
	.child_class_next = codec_child_class_next,
	#endif
	.child_class_iterate = codec_child_class_iterate,
	.category = AV_CLASS_CATEGORY_ENCODER,
	.get_category = get_category,
	};

	static int init_context_defaults(AVCodecContext s, const AVCodec codec)
	{
	int flags=0;
	memset(s, 0, sizeof(AVCodecContext));

	s->av_class = &av_codec_context_class;

	s->codec_type = codec ? codec->type : AVMEDIA_TYPE_UNKNOWN;
	if (codec) {
	s->codec = codec;
	s->codec_id = codec->id;
	}

	if(s->codec_type == AVMEDIA_TYPE_AUDIO)
	flags= AV_OPT_FLAG_AUDIO_PARAM;
	else if(s->codec_type == AVMEDIA_TYPE_VIDEO)
	flags= AV_OPT_FLAG_VIDEO_PARAM;
	else if(s->codec_type == AVMEDIA_TYPE_SUBTITLE)
	flags= AV_OPT_FLAG_SUBTITLE_PARAM;
	av_opt_set_defaults2(s, flags, flags);

	s->time_base = (AVRational){0,1};
	s->framerate = (AVRational){ 0, 1 };
	s->pkt_timebase = (AVRational){ 0, 1 };
	s->get_buffer2 = avcodec_default_get_buffer2;
	s->get_format = avcodec_default_get_format;
	s->execute = avcodec_default_execute;
	s->execute2 = avcodec_default_execute2;
	s->sample_aspect_ratio = (AVRational){0,1};
	s->pix_fmt = AV_PIX_FMT_NONE;
	s->sw_pix_fmt = AV_PIX_FMT_NONE;
	s->sample_fmt = AV_SAMPLE_FMT_NONE;

	s->reordered_opaque = AV_NOPTS_VALUE;
	if(codec && codec->priv_data_size){
	if(!s->priv_data){
	s->priv_data= av_mallocz(codec->priv_data_size);
	if (!s->priv_data) {
	return AVERROR(ENOMEM);
	}
	}
	if(codec->priv_class){
	(const AVClass*)s->priv_data = codec->priv_class;
	av_opt_set_defaults(s->priv_data);
	}
	}
	if (codec && codec->defaults) {
	int ret;
	const AVCodecDefault *d = codec->defaults;
	while (d->key) {
	ret = av_opt_set(s, d->key, d->value, 0);
	av_assert0(ret >= 0);
	d++;
	}
	}
	return 0;
	}

	#if FF_API_GET_CONTEXT_DEFAULTS
	int avcodec_get_context_defaults3(AVCodecContext s, const AVCodec codec)
	{
	return init_context_defaults(s, codec);
	}
	#endif

	AVCodecContext avcodec_alloc_context3(const AVCodec codec)
	{
	AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));

	if (!avctx)
	return NULL;

	if (init_context_defaults(avctx, codec) < 0) {
	av_free(avctx);
	return NULL;
	}

	return avctx;
	}

	void avcodec_free_context(AVCodecContext **pavctx)
	{
	AVCodecContext avctx = pavctx;

	if (!avctx)
	return;

	avcodec_close(avctx);

	av_freep(&avctx->extradata);
	av_freep(&avctx->subtitle_header);
	av_freep(&avctx->intra_matrix);
	av_freep(&avctx->inter_matrix);
	av_freep(&avctx->rc_override);

	av_freep(pavctx);
	}

	#if FF_API_COPY_CONTEXT
	static void copy_context_reset(AVCodecContext *avctx)
	{
	int i;

	av_opt_free(avctx);
	#if FF_API_CODED_FRAME
	FF_DISABLE_DEPRECATION_WARNINGS
	av_frame_free(&avctx->coded_frame);
	FF_ENABLE_DEPRECATION_WARNINGS
	#endif
	av_freep(&avctx->rc_override);
	av_freep(&avctx->intra_matrix);
	av_freep(&avctx->inter_matrix);
	av_freep(&avctx->extradata);
	av_freep(&avctx->subtitle_header);
	av_buffer_unref(&avctx->hw_frames_ctx);
	av_buffer_unref(&avctx->hw_device_ctx);
	for (i = 0; i < avctx->nb_coded_side_data; i++)
	av_freep(&avctx->coded_side_data[i].data);
	av_freep(&avctx->coded_side_data);
	avctx->subtitle_header_size = 0;
	avctx->nb_coded_side_data = 0;
	avctx->extradata_size = 0;
	}

	int avcodec_copy_context(AVCodecContext dest, const AVCodecContext src)
	{
	const AVCodec *orig_codec = dest->codec;
	uint8_t *orig_priv_data = dest->priv_data;

	if (avcodec_is_open(dest)) { // check that the dest context is uninitialized
	av_log(dest, AV_LOG_ERROR,
	"Tried to copy AVCodecContext %p into already-initialized %p\n",
	src, dest);
	return AVERROR(EINVAL);
	}

	copy_context_reset(dest);

	memcpy(dest, src, sizeof(*dest));
	av_opt_copy(dest, src);

	dest->priv_data = orig_priv_data;
	dest->codec = orig_codec;

	if (orig_priv_data && src->codec && src->codec->priv_class &&
	dest->codec && dest->codec->priv_class)
	av_opt_copy(orig_priv_data, src->priv_data);


	/* set values specific to opened codecs back to their default state */
	dest->slice_offset = NULL;
	dest->hwaccel = NULL;
	dest->internal = NULL;
	#if FF_API_CODED_FRAME
	FF_DISABLE_DEPRECATION_WARNINGS
	dest->coded_frame = NULL;
	FF_ENABLE_DEPRECATION_WARNINGS
	#endif

	/* reallocate values that should be allocated separately */
	dest->extradata = NULL;
	dest->coded_side_data = NULL;
	dest->intra_matrix = NULL;
	dest->inter_matrix = NULL;
	dest->rc_override = NULL;
	dest->subtitle_header = NULL;
	dest->hw_frames_ctx = NULL;
	dest->hw_device_ctx = NULL;
	dest->nb_coded_side_data = 0;

	#define alloc_and_copy_or_fail(obj, size, pad) \
	if (src->obj && size > 0) { \
	dest->obj = av_malloc(size + pad); \
	if (!dest->obj) \
	goto fail; \
	memcpy(dest->obj, src->obj, size); \
	if (pad) \
	memset(((uint8_t *) dest->obj) + size, 0, pad); \
	}
	alloc_and_copy_or_fail(extradata, src->extradata_size,
	AV_INPUT_BUFFER_PADDING_SIZE);
	dest->extradata_size = src->extradata_size;
	alloc_and_copy_or_fail(intra_matrix, 64 * sizeof(int16_t), 0);
	alloc_and_copy_or_fail(inter_matrix, 64 * sizeof(int16_t), 0);
	alloc_and_copy_or_fail(rc_override, src->rc_override_count * sizeof(*src->rc_override), 0);
	alloc_and_copy_or_fail(subtitle_header, src->subtitle_header_size, 1);
	av_assert0(dest->subtitle_header_size == src->subtitle_header_size);
	#undef alloc_and_copy_or_fail

	if (src->hw_frames_ctx) {
	dest->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx);
	if (!dest->hw_frames_ctx)
	goto fail;
	}

	return 0;

	fail:
	copy_context_reset(dest);
	return AVERROR(ENOMEM);
	}
	#endif

	const AVClass *avcodec_get_class(void)
	{
	return &av_codec_context_class;
	}

	#define FOFFSET(x) offsetof(AVFrame,x)

	static const AVOption frame_options[]={
	{"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
	{"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
	{"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
	{"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
	{"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
	{"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
	{"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
	{"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
	{"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
	{NULL},
	};

	#if FF_API_COPY_CONTEXT
	static const AVClass av_frame_class = {
	.class_name = "AVFrame",
	.item_name = NULL,
	.option = frame_options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	const AVClass *avcodec_get_frame_class(void)
	{
	return &av_frame_class;
	}
	#endif

	#define SROFFSET(x) offsetof(AVSubtitleRect,x)

	static const AVOption subtitle_rect_options[]={
	{"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
	{"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
	{"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
	{"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
	{"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
	{"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
	{"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
	{NULL},
	};

	#if FF_API_COPY_CONTEXT
	static const AVClass av_subtitle_rect_class = {
	.class_name = "AVSubtitleRect",
	.item_name = NULL,
	.option = subtitle_rect_options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	const AVClass *avcodec_get_subtitle_rect_class(void)
	{
	return &av_subtitle_rect_class;
	}
	#endif